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< a href = "sat__solver_8cc.html" > Go to the documentation of this file.< / a > < div class = "fragment" > < div class = "line" > < a id = "l00001" name = "l00001" > < / a > < span class = "lineno" > 1< / span > < span class = "comment" > // Copyright 2010-2021 Google LLC< / span > < / div >
< div class = "line" > < a id = "l00002" name = "l00002" > < / a > < span class = "lineno" > 2< / span > < span class = "comment" > // Licensed under the Apache License, Version 2.0 (the " License" );< / span > < / div >
< div class = "line" > < a id = "l00003" name = "l00003" > < / a > < span class = "lineno" > 3< / span > < span class = "comment" > // you may not use this file except in compliance with the License.< / span > < / div >
< div class = "line" > < a id = "l00004" name = "l00004" > < / a > < span class = "lineno" > 4< / span > < span class = "comment" > // You may obtain a copy of the License at< / span > < / div >
< div class = "line" > < a id = "l00005" name = "l00005" > < / a > < span class = "lineno" > 5< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00006" name = "l00006" > < / a > < span class = "lineno" > 6< / span > < span class = "comment" > // http://www.apache.org/licenses/LICENSE-2.0< / span > < / div >
< div class = "line" > < a id = "l00007" name = "l00007" > < / a > < span class = "lineno" > 7< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00008" name = "l00008" > < / a > < span class = "lineno" > 8< / span > < span class = "comment" > // Unless required by applicable law or agreed to in writing, software< / span > < / div >
< div class = "line" > < a id = "l00009" name = "l00009" > < / a > < span class = "lineno" > 9< / span > < span class = "comment" > // distributed under the License is distributed on an " AS IS" BASIS,< / span > < / div >
< div class = "line" > < a id = "l00010" name = "l00010" > < / a > < span class = "lineno" > 10< / span > < span class = "comment" > // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.< / span > < / div >
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< div class = "line" > < a id = "l00012" name = "l00012" > < / a > < span class = "lineno" > 12< / span > < span class = "comment" > // limitations under the License.< / span > < / div >
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< div class = "line" > < a id = "l00014" name = "l00014" > < / a > < span class = "lineno" > 14< / span > < span class = "preprocessor" > #include " < a class = "code" href = "sat__solver_8h.html" > ortools/sat/sat_solver.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00015" name = "l00015" > < / a > < span class = "lineno" > 15< / span > < / div >
< div class = "line" > < a id = "l00016" name = "l00016" > < / a > < span class = "lineno" > 16< / span > < span class = "preprocessor" > #include < algorithm> < / span > < / div >
< div class = "line" > < a id = "l00017" name = "l00017" > < / a > < span class = "lineno" > 17< / span > < span class = "preprocessor" > #include < cstddef> < / span > < / div >
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< div class = "line" > < a id = "l00019" name = "l00019" > < / a > < span class = "lineno" > 19< / span > < span class = "preprocessor" > #include < functional> < / span > < / div >
< div class = "line" > < a id = "l00020" name = "l00020" > < / a > < span class = "lineno" > 20< / span > < span class = "preprocessor" > #include < limits> < / span > < / div >
< div class = "line" > < a id = "l00021" name = "l00021" > < / a > < span class = "lineno" > 21< / span > < span class = "preprocessor" > #include < memory> < / span > < / div >
< div class = "line" > < a id = "l00022" name = "l00022" > < / a > < span class = "lineno" > 22< / span > < span class = "preprocessor" > #include < string> < / span > < / div >
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< div class = "line" > < a id = "l00024" name = "l00024" > < / a > < span class = "lineno" > 24< / span > < span class = "preprocessor" > #include < vector> < / span > < / div >
< div class = "line" > < a id = "l00025" name = "l00025" > < / a > < span class = "lineno" > 25< / span > < / div >
< div class = "line" > < a id = "l00026" name = "l00026" > < / a > < span class = "lineno" > 26< / span > < span class = "preprocessor" > #include " absl/base/attributes.h" < / span > < / div >
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< div class = "line" > < a id = "l00028" name = "l00028" > < / a > < span class = "lineno" > 28< / span > < span class = "preprocessor" > #include " absl/container/flat_hash_map.h" < / span > < / div >
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< div class = "line" > < a id = "l00030" name = "l00030" > < / a > < span class = "lineno" > 30< / span > < span class = "preprocessor" > #include " absl/strings/str_cat.h" < / span > < / div >
< div class = "line" > < a id = "l00031" name = "l00031" > < / a > < span class = "lineno" > 31< / span > < span class = "preprocessor" > #include " absl/strings/str_format.h" < / span > < / div >
< div class = "line" > < a id = "l00032" name = "l00032" > < / a > < span class = "lineno" > 32< / span > < span class = "preprocessor" > #include " absl/types/span.h" < / span > < / div >
< div class = "line" > < a id = "l00033" name = "l00033" > < / a > < span class = "lineno" > 33< / span > < span class = "preprocessor" > #include " < a class = "code" href = "base_2logging_8h.html" > ortools/base/logging.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00034" name = "l00034" > < / a > < span class = "lineno" > 34< / span > < span class = "preprocessor" > #include " < a class = "code" href = "timer_8h.html" > ortools/base/timer.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00035" name = "l00035" > < / a > < span class = "lineno" > 35< / span > < span class = "preprocessor" > #include " < a class = "code" href = "port_2proto__utils_8h.html" > ortools/port/proto_utils.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00036" name = "l00036" > < / a > < span class = "lineno" > 36< / span > < span class = "preprocessor" > #include " < a class = "code" href = "port_2sysinfo_8h.html" > ortools/port/sysinfo.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00037" name = "l00037" > < / a > < span class = "lineno" > 37< / span > < span class = "preprocessor" > #include " < a class = "code" href = "clause_8h.html" > ortools/sat/clause.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00038" name = "l00038" > < / a > < span class = "lineno" > 38< / span > < span class = "preprocessor" > #include " < a class = "code" href = "drat__proof__handler_8h.html" > ortools/sat/drat_proof_handler.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00039" name = "l00039" > < / a > < span class = "lineno" > 39< / span > < span class = "preprocessor" > #include " < a class = "code" href = "sat_2model_8h.html" > ortools/sat/model.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00040" name = "l00040" > < / a > < span class = "lineno" > 40< / span > < span class = "preprocessor" > #include " < a class = "code" href = "pb__constraint_8h.html" > ortools/sat/pb_constraint.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00041" name = "l00041" > < / a > < span class = "lineno" > 41< / span > < span class = "preprocessor" > #include " < a class = "code" href = "restart_8h.html" > ortools/sat/restart.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00042" name = "l00042" > < / a > < span class = "lineno" > 42< / span > < span class = "preprocessor" > #include " < a class = "code" href = "sat__base_8h.html" > ortools/sat/sat_base.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00043" name = "l00043" > < / a > < span class = "lineno" > 43< / span > < span class = "preprocessor" > #include " < a class = "code" href = "sat__decision_8h.html" > ortools/sat/sat_decision.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00044" name = "l00044" > < / a > < span class = "lineno" > 44< / span > < span class = "preprocessor" > #include " ortools/sat/sat_parameters.pb.h" < / span > < / div >
< div class = "line" > < a id = "l00045" name = "l00045" > < / a > < span class = "lineno" > 45< / span > < span class = "preprocessor" > #include " < a class = "code" href = "sat_2util_8h.html" > ortools/sat/util.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00046" name = "l00046" > < / a > < span class = "lineno" > 46< / span > < span class = "preprocessor" > #include " < a class = "code" href = "bitset_8h.html" > ortools/util/bitset.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00047" name = "l00047" > < / a > < span class = "lineno" > 47< / span > < span class = "preprocessor" > #include " < a class = "code" href = "util_2logging_8h.html" > ortools/util/logging.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00048" name = "l00048" > < / a > < span class = "lineno" > 48< / span > < span class = "preprocessor" > #include " < a class = "code" href = "saturated__arithmetic_8h.html" > ortools/util/saturated_arithmetic.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00049" name = "l00049" > < / a > < span class = "lineno" > 49< / span > < span class = "preprocessor" > #include " < a class = "code" href = "stats_8h.html" > ortools/util/stats.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00050" name = "l00050" > < / a > < span class = "lineno" > 50< / span > < span class = "preprocessor" > #include " < a class = "code" href = "strong__integers_8h.html" > ortools/util/strong_integers.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00051" name = "l00051" > < / a > < span class = "lineno" > 51< / span > < span class = "preprocessor" > #include " < a class = "code" href = "time__limit_8h.html" > ortools/util/time_limit.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00052" name = "l00052" > < / a > < span class = "lineno" > 52< / span > < / div >
< div class = "line" > < a id = "l00053" name = "l00053" > < / a > < span class = "lineno" > 53< / span > < span class = "keyword" > namespace < / span > < a class = "code hl_namespace" href = "namespaceoperations__research.html" > operations_research< / a > {< / div >
< div class = "line" > < a id = "l00054" name = "l00054" > < / a > < span class = "lineno" > 54< / span > < span class = "keyword" > namespace < / span > sat {< / div >
< div class = "line" > < a id = "l00055" name = "l00055" > < / a > < span class = "lineno" > 55< / span > < / div >
< div class = "line" > < a id = "l00056" name = "l00056" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adc7569321b063bae82803229623c8f4f" > 56< / a > < / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adc7569321b063bae82803229623c8f4f" > SatSolver::SatSolver< / a > () : < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_solver.html" > SatSolver< / a > (new < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_model.html" > Model< / a > ()) {< / div >
< div class = "line" > < a id = "l00057" name = "l00057" > < / a > < span class = "lineno" > 57< / span > owned_model_.reset(model_);< / div >
< div class = "line" > < a id = "l00058" name = "l00058" > < / a > < span class = "lineno" > 58< / span > model_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_model.html#a7fac5de5604ea8668bc414536e8aa7ee" > Register< / a > < < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_solver.html" > SatSolver< / a > > (< span class = "keyword" > this< / span > );< / div >
< div class = "line" > < a id = "l00059" name = "l00059" > < / a > < span class = "lineno" > 59< / span > logger_ = model_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_model.html#afb0c03e2a6201677c266f8a7eb77c2dc" > GetOrCreate< / a > < < a class = "code hl_class" href = "classoperations__research_1_1_solver_logger.html" > SolverLogger< / a > > ();< / div >
< div class = "line" > < a id = "l00060" name = "l00060" > < / a > < span class = "lineno" > 60< / span > }< / div >
< div class = "line" > < a id = "l00061" name = "l00061" > < / a > < span class = "lineno" > 61< / span > < / div >
< div class = "line" > < a id = "l00062" name = "l00062" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac656c2164745b2dd47374ec5522ef6a7" > 62< / a > < / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adc7569321b063bae82803229623c8f4f" > SatSolver::SatSolver< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_model.html" > Model< / a > * < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > )< / div >
< div class = "line" > < a id = "l00063" name = "l00063" > < / a > < span class = "lineno" > 63< / span > : model_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ),< / div >
< div class = "line" > < a id = "l00064" name = "l00064" > < / a > < span class = "lineno" > 64< / span > binary_implication_graph_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html" > BinaryImplicationGraph< / a > > ()),< / div >
< div class = "line" > < a id = "l00065" name = "l00065" > < / a > < span class = "lineno" > 65< / span > clauses_propagator_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal_watchers.html" > LiteralWatchers< / a > > ()),< / div >
< div class = "line" > < a id = "l00066" name = "l00066" > < / a > < span class = "lineno" > 66< / span > pb_constraints_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_pb_constraints.html" > PbConstraints< / a > > ()),< / div >
< div class = "line" > < a id = "l00067" name = "l00067" > < / a > < span class = "lineno" > 67< / span > track_binary_clauses_(false),< / div >
< div class = "line" > < a id = "l00068" name = "l00068" > < / a > < span class = "lineno" > 68< / span > trail_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_trail.html" > Trail< / a > > ()),< / div >
< div class = "line" > < a id = "l00069" name = "l00069" > < / a > < span class = "lineno" > 69< / span > time_limit_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1_time_limit.html" > TimeLimit< / a > > ()),< / div >
< div class = "line" > < a id = "l00070" name = "l00070" > < / a > < span class = "lineno" > 70< / span > parameters_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< SatParameters> ()),< / div >
< div class = "line" > < a id = "l00071" name = "l00071" > < / a > < span class = "lineno" > 71< / span > restart_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_restart_policy.html" > RestartPolicy< / a > > ()),< / div >
< div class = "line" > < a id = "l00072" name = "l00072" > < / a > < span class = "lineno" > 72< / span > decision_policy_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html" > SatDecisionPolicy< / a > > ()),< / div >
< div class = "line" > < a id = "l00073" name = "l00073" > < / a > < span class = "lineno" > 73< / span > logger_(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > -> GetOrCreate< < a class = "code hl_class" href = "classoperations__research_1_1_solver_logger.html" > SolverLogger< / a > > ()),< / div >
< div class = "line" > < a id = "l00074" name = "l00074" > < / a > < span class = "lineno" > 74< / span > clause_activity_increment_(1.0),< / div >
< div class = "line" > < a id = "l00075" name = "l00075" > < / a > < span class = "lineno" > 75< / span > same_reason_identifier_(*trail_),< / div >
< div class = "line" > < a id = "l00076" name = "l00076" > < / a > < span class = "lineno" > 76< / span > is_relevant_for_core_computation_(true),< / div >
< div class = "line" > < a id = "l00077" name = "l00077" > < / a > < span class = "lineno" > 77< / span > problem_is_pure_sat_(true),< / div >
< div class = "line" > < a id = "l00078" name = "l00078" > < / a > < span class = "lineno" > 78< / span > drat_proof_handler_(nullptr),< / div >
< div class = "line" > < a id = "l00079" name = "l00079" > < / a > < span class = "lineno" > 79< / span > stats_(< span class = "stringliteral" > " SatSolver" < / span > ) {< / div >
< div class = "line" > < a id = "l00080" name = "l00080" > < / a > < span class = "lineno" > 80< / span > InitializePropagators();< / div >
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< div class = "line" > < a id = "l00081" name = "l00081" > < / a > < span class = "lineno" > 81< / span > }< / div >
< div class = "line" > < a id = "l00082" name = "l00082" > < / a > < span class = "lineno" > 82< / span > < / div >
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< div class = "line" > < a id = "l00083" name = "l00083" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8c6812e05685c0b43d4dd8efaf68aa23" > 83< / a > < / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8c6812e05685c0b43d4dd8efaf68aa23" > SatSolver::~SatSolver< / a > () { < a class = "code hl_define" href = "stats_8h.html#a3c3e6b102f0d91c523099325c98e1887" > IF_STATS_ENABLED< / a > (< a class = "code hl_define" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (< a class = "code hl_variable" href = "log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9" > INFO< / a > ) < < stats_.< a class = "code hl_function" href = "classoperations__research_1_1_stats_group.html#af9bc435481ae9e6e60d66a65d5394a7f" > StatString< / a > ()); }< / div >
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< div class = "line" > < a id = "l00084" name = "l00084" > < / a > < span class = "lineno" > 84< / span > < / div >
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< div class = "line" > < a id = "l00085" name = "l00085" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a0b58ef3a397720b272662f8bc45585cb" > 85< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a0b58ef3a397720b272662f8bc45585cb" > SatSolver::SetNumVariables< / a > (< span class = "keywordtype" > int< / span > num_variables) {< / div >
< div class = "line" > < a id = "l00086" name = "l00086" > < / a > < span class = "lineno" > 86< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00087" name = "l00087" > < / a > < span class = "lineno" > 87< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9" > CHECK_GE< / a > (num_variables, num_variables_);< / div >
< div class = "line" > < a id = "l00088" name = "l00088" > < / a > < span class = "lineno" > 88< / span > < / div >
< div class = "line" > < a id = "l00089" name = "l00089" > < / a > < span class = "lineno" > 89< / span > num_variables_ = num_variables;< / div >
< div class = "line" > < a id = "l00090" name = "l00090" > < / a > < span class = "lineno" > 90< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#af7fbbd00f0e631ce361b5ce6636b2017" > Resize< / a > (num_variables);< / div >
< div class = "line" > < a id = "l00091" name = "l00091" > < / a > < span class = "lineno" > 91< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#af7fbbd00f0e631ce361b5ce6636b2017" > Resize< / a > (num_variables);< / div >
< div class = "line" > < a id = "l00092" name = "l00092" > < / a > < span class = "lineno" > 92< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#af7fbbd00f0e631ce361b5ce6636b2017" > Resize< / a > (num_variables);< / div >
< div class = "line" > < a id = "l00093" name = "l00093" > < / a > < span class = "lineno" > 93< / span > decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#a19614231a107b165113595bf8edf60bf" > IncreaseNumVariables< / a > (num_variables);< / div >
< div class = "line" > < a id = "l00094" name = "l00094" > < / a > < span class = "lineno" > 94< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#af7fbbd00f0e631ce361b5ce6636b2017" > Resize< / a > (num_variables);< / div >
< div class = "line" > < a id = "l00095" name = "l00095" > < / a > < span class = "lineno" > 95< / span > same_reason_identifier_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#af7fbbd00f0e631ce361b5ce6636b2017" > Resize< / a > (num_variables);< / div >
< div class = "line" > < a id = "l00096" name = "l00096" > < / a > < span class = "lineno" > 96< / span > < / div >
< div class = "line" > < a id = "l00097" name = "l00097" > < / a > < span class = "lineno" > 97< / span > < span class = "comment" > // The +1 is a bit tricky, it is because in< / span > < / div >
< div class = "line" > < a id = "l00098" name = "l00098" > < / a > < span class = "lineno" > 98< / span > < span class = "comment" > // EnqueueDecisionAndBacktrackOnConflict() we artificially enqueue the< / span > < / div >
< div class = "line" > < a id = "l00099" name = "l00099" > < / a > < span class = "lineno" > 99< / span > < span class = "comment" > // decision before checking if it is not already assigned.< / span > < / div >
< div class = "line" > < a id = "l00100" name = "l00100" > < / a > < span class = "lineno" > 100< / span > decisions_.resize(num_variables + 1);< / div >
< div class = "line" > < a id = "l00101" name = "l00101" > < / a > < span class = "lineno" > 101< / span > }< / div >
< div class = "line" > < a id = "l00102" name = "l00102" > < / a > < span class = "lineno" > 102< / span > < / div >
< div class = "line" > < a id = "l00103" name = "l00103" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8fa29503728270c9696389c9e590c242" > 103< / a > < / span > int64_t < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8fa29503728270c9696389c9e590c242" > SatSolver::num_branches< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > counters_.num_branches; }< / div >
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< div class = "line" > < a id = "l00104" name = "l00104" > < / a > < span class = "lineno" > 104< / span > < / div >
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< div class = "line" > < a id = "l00105" name = "l00105" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > 105< / a > < / span > int64_t < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > SatSolver::num_failures< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > counters_.num_failures; }< / div >
< div class = "line" > < a id = "l00106" name = "l00106" > < / a > < span class = "lineno" > 106< / span > < / div >
< div class = "line" > < a id = "l00107" name = "l00107" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#abaadd9bf3136af09f2d2ae695439c4fa" > 107< / a > < / span > int64_t < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#abaadd9bf3136af09f2d2ae695439c4fa" > SatSolver::num_propagations< / a > ()< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00108" name = "l00108" > < / a > < span class = "lineno" > 108< / span > < span class = "keywordflow" > return< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a38e7aa21c6a38b5019bb0413d4be489b" > NumberOfEnqueues< / a > () - counters_.num_branches;< / div >
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< div class = "line" > < a id = "l00109" name = "l00109" > < / a > < span class = "lineno" > 109< / span > }< / div >
< div class = "line" > < a id = "l00110" name = "l00110" > < / a > < span class = "lineno" > 110< / span > < / div >
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< div class = "line" > < a id = "l00111" name = "l00111" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a7ab8996f31104834f27a232817731314" > 111< / a > < / span > int64_t < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a7ab8996f31104834f27a232817731314" > SatSolver::num_restarts< / a > ()< span class = "keyword" > const < / span > { < span class = "keywordflow" > return< / span > counters_.num_restarts; }< / div >
< div class = "line" > < a id = "l00112" name = "l00112" > < / a > < span class = "lineno" > 112< / span > < / div >
< div class = "line" > < a id = "l00113" name = "l00113" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ae525d235b02bcfc962d845e28f5f0125" > 113< / a > < / span > < span class = "keywordtype" > double< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ae525d235b02bcfc962d845e28f5f0125" > SatSolver::deterministic_time< / a > ()< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00114" name = "l00114" > < / a > < span class = "lineno" > 114< / span > < span class = "comment" > // Each of these counters mesure really basic operations. The weight are just< / span > < / div >
< div class = "line" > < a id = "l00115" name = "l00115" > < / a > < span class = "lineno" > 115< / span > < span class = "comment" > // an estimate of the operation complexity. Note that these counters are never< / span > < / div >
< div class = "line" > < a id = "l00116" name = "l00116" > < / a > < span class = "lineno" > 116< / span > < span class = "comment" > // reset to zero once a SatSolver is created.< / span > < / div >
< div class = "line" > < a id = "l00117" name = "l00117" > < / a > < span class = "lineno" > 117< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00118" name = "l00118" > < / a > < span class = "lineno" > 118< / span > < span class = "comment" > // TODO(user): Find a better procedure to fix the weight than just educated< / span > < / div >
< div class = "line" > < a id = "l00119" name = "l00119" > < / a > < span class = "lineno" > 119< / span > < span class = "comment" > // guess.< / span > < / div >
< div class = "line" > < a id = "l00120" name = "l00120" > < / a > < span class = "lineno" > 120< / span > < span class = "keywordflow" > return< / span > 1e-8 * (8.0 * trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a38e7aa21c6a38b5019bb0413d4be489b" > NumberOfEnqueues< / a > () +< / div >
< div class = "line" > < a id = "l00121" name = "l00121" > < / a > < span class = "lineno" > 121< / span > 1.0 * binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a869f65709fd34e4f4ed967bab630f707" > num_inspections< / a > () +< / div >
< div class = "line" > < a id = "l00122" name = "l00122" > < / a > < span class = "lineno" > 122< / span > 4.0 * clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a70c5a070f03810d5467c5758f6bb916e" > num_inspected_clauses< / a > () +< / div >
< div class = "line" > < a id = "l00123" name = "l00123" > < / a > < span class = "lineno" > 123< / span > 1.0 * clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ad78bb381916ac421212217a3e5cb03ab" > num_inspected_clause_literals< / a > () +< / div >
< div class = "line" > < a id = "l00124" name = "l00124" > < / a > < span class = "lineno" > 124< / span > < / div >
< div class = "line" > < a id = "l00125" name = "l00125" > < / a > < span class = "lineno" > 125< / span > < span class = "comment" > // Here there is a factor 2 because of the untrail.< / span > < / div >
< div class = "line" > < a id = "l00126" name = "l00126" > < / a > < span class = "lineno" > 126< / span > 20.0 * pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#af33b8aea130f426edbc51d960b1b60c5" > num_constraint_lookups< / a > () +< / div >
< div class = "line" > < a id = "l00127" name = "l00127" > < / a > < span class = "lineno" > 127< / span > 2.0 * pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a944e51f934257c76ec47b94dd37f5468" > num_threshold_updates< / a > () +< / div >
< div class = "line" > < a id = "l00128" name = "l00128" > < / a > < span class = "lineno" > 128< / span > 1.0 * pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a5a1f1fc70e04b4d91167a415a45a13ad" > num_inspected_constraint_literals< / a > ());< / div >
< div class = "line" > < a id = "l00129" name = "l00129" > < / a > < span class = "lineno" > 129< / span > }< / div >
< div class = "line" > < a id = "l00130" name = "l00130" > < / a > < span class = "lineno" > 130< / span > < / div >
< div class = "line" > < a id = "l00131" name = "l00131" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9" > 131< / a > < / span > < span class = "keyword" > const< / span > SatParameters& < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9" > SatSolver::parameters< / a > ()< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00132" name = "l00132" > < / a > < span class = "lineno" > 132< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00133" name = "l00133" > < / a > < span class = "lineno" > 133< / span > < span class = "keywordflow" > return< / span > *parameters_;< / div >
< div class = "line" > < a id = "l00134" name = "l00134" > < / a > < span class = "lineno" > 134< / span > }< / div >
< div class = "line" > < a id = "l00135" name = "l00135" > < / a > < span class = "lineno" > 135< / span > < / div >
< div class = "line" > < a id = "l00136" name = "l00136" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9d584b84d7b882a6017b072b33475172" > 136< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9d584b84d7b882a6017b072b33475172" > SatSolver::SetParameters< / a > (< span class = "keyword" > const< / span > SatParameters& < a class = "code hl_variable" href = "cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219" > parameters< / a > ) {< / div >
< div class = "line" > < a id = "l00137" name = "l00137" > < / a > < span class = "lineno" > 137< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00138" name = "l00138" > < / a > < span class = "lineno" > 138< / span > *parameters_ = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9" > parameters< / a > ;< / div >
< div class = "line" > < a id = "l00139" name = "l00139" > < / a > < span class = "lineno" > 139< / span > restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#a372de693ad40b3f42839c8ec6ac845f4" > Reset< / a > ();< / div >
< div class = "line" > < a id = "l00140" name = "l00140" > < / a > < span class = "lineno" > 140< / span > time_limit_-> < a class = "code hl_function" href = "classoperations__research_1_1_time_limit.html#a312550ebabce586fb77c49e813c610f8" > ResetLimitFromParameters< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9" > parameters< / a > );< / div >
< div class = "line" > < a id = "l00141" name = "l00141" > < / a > < span class = "lineno" > 141< / span > logger_-> < a class = "code hl_function" href = "classoperations__research_1_1_solver_logger.html#ad4238e7273d93a1d0a2272d46660c254" > EnableLogging< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9" > parameters< / a > .log_search_progress() || < a class = "code hl_define" href = "vlog__is__on_8h.html#a956152cad330225654d128f35c00efce" > VLOG_IS_ON< / a > (1));< / div >
< div class = "line" > < a id = "l00142" name = "l00142" > < / a > < span class = "lineno" > 142< / span > logger_-> < a class = "code hl_function" href = "classoperations__research_1_1_solver_logger.html#a035277f8488770078b1171cae4636b8e" > SetLogToStdOut< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9" > parameters< / a > .log_to_stdout());< / div >
< div class = "line" > < a id = "l00143" name = "l00143" > < / a > < span class = "lineno" > 143< / span > }< / div >
< div class = "line" > < a id = "l00144" name = "l00144" > < / a > < span class = "lineno" > 144< / span > < / div >
< div class = "line" > < a id = "l00145" name = "l00145" > < / a > < span class = "lineno" > 145< / span > < span class = "keywordtype" > bool< / span > SatSolver::IsMemoryLimitReached()< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00146" name = "l00146" > < / a > < span class = "lineno" > 146< / span > < span class = "keyword" > const< / span > int64_t memory_usage =< / div >
< div class = "line" > < a id = "l00147" name = "l00147" > < / a > < span class = "lineno" > 147< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sysinfo.html#a19148076f1e5c0b2d2444a705d9e12c5" > ::operations_research::sysinfo::MemoryUsageProcess< / a > ();< / div >
< div class = "line" > < a id = "l00148" name = "l00148" > < / a > < span class = "lineno" > 148< / span > < span class = "keyword" > const< / span > int64_t kMegaByte = 1024 * 1024;< / div >
< div class = "line" > < a id = "l00149" name = "l00149" > < / a > < span class = "lineno" > 149< / span > < span class = "keywordflow" > return< / span > memory_usage > kMegaByte * parameters_-> max_memory_in_mb();< / div >
< div class = "line" > < a id = "l00150" name = "l00150" > < / a > < span class = "lineno" > 150< / span > }< / div >
< div class = "line" > < a id = "l00151" name = "l00151" > < / a > < span class = "lineno" > 151< / span > < / div >
< div class = "line" > < a id = "l00152" name = "l00152" > < / a > < span class = "lineno" > 152< / span > < span class = "keywordtype" > bool< / span > SatSolver::SetModelUnsat() {< / div >
< div class = "line" > < a id = "l00153" name = "l00153" > < / a > < span class = "lineno" > 153< / span > model_is_unsat_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00154" name = "l00154" > < / a > < span class = "lineno" > 154< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00155" name = "l00155" > < / a > < span class = "lineno" > 155< / span > }< / div >
< div class = "line" > < a id = "l00156" name = "l00156" > < / a > < span class = "lineno" > 156< / span > < / div >
< div class = "line" > < a id = "l00157" name = "l00157" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a25eb4ef5875f4884226251b66eb61bc0" > 157< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a25eb4ef5875f4884226251b66eb61bc0" > SatSolver::AddClauseDuringSearch< / a > (absl::Span< const Literal> literals) {< / div >
< div class = "line" > < a id = "l00158" name = "l00158" > < / a > < span class = "lineno" > 158< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00159" name = "l00159" > < / a > < span class = "lineno" > 159< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l00160" name = "l00160" > < / a > < span class = "lineno" > 160< / span > < span class = "keywordflow" > if< / span > (literals.empty()) < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00161" name = "l00161" > < / a > < span class = "lineno" > 161< / span > < span class = "keywordflow" > if< / span > (literals.size() == 1) < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#afbbbc2f0845a82a5a5cfb3f00a61abe9" > AddUnitClause< / a > (literals[0]);< / div >
< div class = "line" > < a id = "l00162" name = "l00162" > < / a > < span class = "lineno" > 162< / span > < span class = "keywordflow" > if< / span > (literals.size() == 2) {< / div >
< div class = "line" > < a id = "l00163" name = "l00163" > < / a > < span class = "lineno" > 163< / span > < span class = "comment" > // TODO(user): We generate in some corner cases clauses with< / span > < / div >
< div class = "line" > < a id = "l00164" name = "l00164" > < / a > < span class = "lineno" > 164< / span > < span class = "comment" > // literals[0].Variable() == literals[1].Variable(). Avoid doing that and< / span > < / div >
< div class = "line" > < a id = "l00165" name = "l00165" > < / a > < span class = "lineno" > 165< / span > < span class = "comment" > // adding such binary clauses to the graph?< / span > < / div >
< div class = "line" > < a id = "l00166" name = "l00166" > < / a > < span class = "lineno" > 166< / span > < span class = "keywordflow" > if< / span > (!binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a4a2107f2a0daf6968b6c0dded5964497" > AddBinaryClauseDuringSearch< / a > (literals[0],< / div >
< div class = "line" > < a id = "l00167" name = "l00167" > < / a > < span class = "lineno" > 167< / span > literals[1])) {< / div >
< div class = "line" > < a id = "l00168" name = "l00168" > < / a > < span class = "lineno" > 168< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00169" name = "l00169" > < / a > < span class = "lineno" > 169< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00170" name = "l00170" > < / a > < span class = "lineno" > 170< / span > }< / div >
< div class = "line" > < a id = "l00171" name = "l00171" > < / a > < span class = "lineno" > 171< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00172" name = "l00172" > < / a > < span class = "lineno" > 172< / span > < span class = "keywordflow" > if< / span > (!clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#aaec5e05be5e5e385c6222c023587cb05" > AddClause< / a > (literals)) {< / div >
< div class = "line" > < a id = "l00173" name = "l00173" > < / a > < span class = "lineno" > 173< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00174" name = "l00174" > < / a > < span class = "lineno" > 174< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00175" name = "l00175" > < / a > < span class = "lineno" > 175< / span > }< / div >
< div class = "line" > < a id = "l00176" name = "l00176" > < / a > < span class = "lineno" > 176< / span > }< / div >
< div class = "line" > < a id = "l00177" name = "l00177" > < / a > < span class = "lineno" > 177< / span > < / div >
< div class = "line" > < a id = "l00178" name = "l00178" > < / a > < span class = "lineno" > 178< / span > < span class = "comment" > // Tricky: Even if nothing new is propagated, calling Propagate() might, via< / span > < / div >
< div class = "line" > < a id = "l00179" name = "l00179" > < / a > < span class = "lineno" > 179< / span > < span class = "comment" > // the LP, deduce new things. This is problematic because some code assumes< / span > < / div >
< div class = "line" > < a id = "l00180" name = "l00180" > < / a > < span class = "lineno" > 180< / span > < span class = "comment" > // that when we create newly associated literals, nothing else changes.< / span > < / div >
< div class = "line" > < a id = "l00181" name = "l00181" > < / a > < span class = "lineno" > 181< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > () == < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00182" name = "l00182" > < / a > < span class = "lineno" > 182< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > FinishPropagation< / a > ();< / div >
< div class = "line" > < a id = "l00183" name = "l00183" > < / a > < span class = "lineno" > 183< / span > }< / div >
< div class = "line" > < a id = "l00184" name = "l00184" > < / a > < span class = "lineno" > 184< / span > < / div >
< div class = "line" > < a id = "l00185" name = "l00185" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#afbbbc2f0845a82a5a5cfb3f00a61abe9" > 185< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#afbbbc2f0845a82a5a5cfb3f00a61abe9" > SatSolver::AddUnitClause< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > true_literal) {< / div >
< div class = "line" > < a id = "l00186" name = "l00186" > < / a > < span class = "lineno" > 186< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#af67fe279478772a6d1492a7f673bda5d" > AddProblemClause< / a > ({true_literal});< / div >
< div class = "line" > < a id = "l00187" name = "l00187" > < / a > < span class = "lineno" > 187< / span > }< / div >
< div class = "line" > < a id = "l00188" name = "l00188" > < / a > < span class = "lineno" > 188< / span > < / div >
< div class = "line" > < a id = "l00189" name = "l00189" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#aac912e9410b8989493f492fcbb2d9094" > 189< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#aac912e9410b8989493f492fcbb2d9094" > SatSolver::AddBinaryClause< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ) {< / div >
< div class = "line" > < a id = "l00190" name = "l00190" > < / a > < span class = "lineno" > 190< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#af67fe279478772a6d1492a7f673bda5d" > AddProblemClause< / a > ({< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > });< / div >
< div class = "line" > < a id = "l00191" name = "l00191" > < / a > < span class = "lineno" > 191< / span > }< / div >
< div class = "line" > < a id = "l00192" name = "l00192" > < / a > < span class = "lineno" > 192< / span > < / div >
< div class = "line" > < a id = "l00193" name = "l00193" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a0e8b0117614d340615ab66abec430d78" > 193< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a0e8b0117614d340615ab66abec430d78" > SatSolver::AddTernaryClause< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > , < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > c) {< / div >
< div class = "line" > < a id = "l00194" name = "l00194" > < / a > < span class = "lineno" > 194< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#af67fe279478772a6d1492a7f673bda5d" > AddProblemClause< / a > ({< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > , c});< / div >
< div class = "line" > < a id = "l00195" name = "l00195" > < / a > < span class = "lineno" > 195< / span > }< / div >
< div class = "line" > < a id = "l00196" name = "l00196" > < / a > < span class = "lineno" > 196< / span > < / div >
< div class = "line" > < a id = "l00197" name = "l00197" > < / a > < span class = "lineno" > 197< / span > < span class = "comment" > // Note(user): we assume there is no duplicate literals in the clauses added< / span > < / div >
< div class = "line" > < a id = "l00198" name = "l00198" > < / a > < span class = "lineno" > 198< / span > < span class = "comment" > // here. Most of the code works, but some advanced algo might be< / span > < / div >
< div class = "line" > < a id = "l00199" name = "l00199" > < / a > < span class = "lineno" > 199< / span > < span class = "comment" > // wrong/suboptimal if this is the case. So even when presolve is off we need< / span > < / div >
< div class = "line" > < a id = "l00200" name = "l00200" > < / a > < span class = "lineno" > 200< / span > < span class = "comment" > // some " cleanup" to enforce this invariant. Alternatively we could have robut< / span > < / div >
< div class = "line" > < a id = "l00201" name = "l00201" > < / a > < span class = "lineno" > 201< / span > < span class = "comment" > // algo in all the stack, but that seems a worse design.< / span > < / div >
< div class = "line" > < a id = "l00202" name = "l00202" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#af67fe279478772a6d1492a7f673bda5d" > 202< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#af67fe279478772a6d1492a7f673bda5d" > SatSolver::AddProblemClause< / a > (absl::Span< const Literal> literals) {< / div >
< div class = "line" > < a id = "l00203" name = "l00203" > < / a > < span class = "lineno" > 203< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00204" name = "l00204" > < / a > < span class = "lineno" > 204< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00205" name = "l00205" > < / a > < span class = "lineno" > 205< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00206" name = "l00206" > < / a > < span class = "lineno" > 206< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00207" name = "l00207" > < / a > < span class = "lineno" > 207< / span > < span class = "comment" > // Filter already assigned literals.< / span > < / div >
< div class = "line" > < a id = "l00208" name = "l00208" > < / a > < span class = "lineno" > 208< / span > literals_scratchpad_.clear();< / div >
< div class = "line" > < a id = "l00209" name = "l00209" > < / a > < span class = "lineno" > 209< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > l : literals) {< / div >
< div class = "line" > < a id = "l00210" name = "l00210" > < / a > < span class = "lineno" > 210< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (l)) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00211" name = "l00211" > < / a > < span class = "lineno" > 211< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5" > LiteralIsFalse< / a > (l)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00212" name = "l00212" > < / a > < span class = "lineno" > 212< / span > literals_scratchpad_.push_back(l);< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00213" name = "l00213" > < / a > < span class = "lineno" > 213< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00214" name = "l00214" > < / a > < span class = "lineno" > 214< / span > < / div >
< div class = "line" > < a id = "l00215" name = "l00215" > < / a > < span class = "lineno" > 215< / span > AddProblemClauseInternal(literals_scratchpad_);< / div >
< div class = "line" > < a id = "l00216" name = "l00216" > < / a > < span class = "lineno" > 216< / span > < / div >
< div class = "line" > < a id = "l00217" name = "l00217" > < / a > < span class = "lineno" > 217< / span > < span class = "comment" > // Tricky: The PropagationIsDone() condition shouldn' t change anything for a< / span > < / div >
< div class = "line" > < a id = "l00218" name = "l00218" > < / a > < span class = "lineno" > 218< / span > < span class = "comment" > // pure SAT problem, however in the CP-SAT context, calling Propagate() can< / span > < / div >
< div class = "line" > < a id = "l00219" name = "l00219" > < / a > < span class = "lineno" > 219< / span > < span class = "comment" > // tigger computation (like the LP) even if no domain changed since the last< / span > < / div >
< div class = "line" > < a id = "l00220" name = "l00220" > < / a > < span class = "lineno" > 220< / span > < span class = "comment" > // call. We do not want to do that.< / span > < / div >
< div class = "line" > < a id = "l00221" name = "l00221" > < / a > < span class = "lineno" > 221< / span > < span class = "keywordflow" > if< / span > (!PropagationIsDone() & & !< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > Propagate< / a > ()) {< / div >
< div class = "line" > < a id = "l00222" name = "l00222" > < / a > < span class = "lineno" > 222< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00223" name = "l00223" > < / a > < span class = "lineno" > 223< / span > }< / div >
< div class = "line" > < a id = "l00224" name = "l00224" > < / a > < span class = "lineno" > 224< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00225" name = "l00225" > < / a > < span class = "lineno" > 225< / span > }< / div >
< div class = "line" > < a id = "l00226" name = "l00226" > < / a > < span class = "lineno" > 226< / span > < / div >
< div class = "line" > < a id = "l00227" name = "l00227" > < / a > < span class = "lineno" > 227< / span > < span class = "keywordtype" > bool< / span > SatSolver::AddProblemClauseInternal(absl::Span< const Literal> literals) {< / div >
< div class = "line" > < a id = "l00228" name = "l00228" > < / a > < span class = "lineno" > 228< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00229" name = "l00229" > < / a > < span class = "lineno" > 229< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "macros_8h.html#a7f536a3b33f9bed8f75734e035d30725" > DEBUG_MODE< / a > ) {< / div >
< div class = "line" > < a id = "l00230" name = "l00230" > < / a > < span class = "lineno" > 230< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00231" name = "l00231" > < / a > < span class = "lineno" > 231< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > l : literals) {< / div >
< div class = "line" > < a id = "l00232" name = "l00232" > < / a > < span class = "lineno" > 232< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (!trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a142694366986039454f53b38e8378815" > LiteralIsAssigned< / a > (l));< / div >
< div class = "line" > < a id = "l00233" name = "l00233" > < / a > < span class = "lineno" > 233< / span > }< / div >
< div class = "line" > < a id = "l00234" name = "l00234" > < / a > < span class = "lineno" > 234< / span > }< / div >
< div class = "line" > < a id = "l00235" name = "l00235" > < / a > < span class = "lineno" > 235< / span > < / div >
< div class = "line" > < a id = "l00236" name = "l00236" > < / a > < span class = "lineno" > 236< / span > < span class = "keywordflow" > if< / span > (literals.empty()) < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00237" name = "l00237" > < / a > < span class = "lineno" > 237< / span > < / div >
< div class = "line" > < a id = "l00238" name = "l00238" > < / a > < span class = "lineno" > 238< / span > < span class = "keywordflow" > if< / span > (literals.size() == 1) {< / div >
< div class = "line" > < a id = "l00239" name = "l00239" > < / a > < span class = "lineno" > 239< / span > < span class = "keywordflow" > if< / span > (drat_proof_handler_ != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l00240" name = "l00240" > < / a > < span class = "lineno" > 240< / span > < span class = "comment" > // Note that we will output problem unit clauses twice, but that is a< / span > < / div >
< div class = "line" > < a id = "l00241" name = "l00241" > < / a > < span class = "lineno" > 241< / span > < span class = "comment" > // small price to pay for having a single variable fixing API.< / span > < / div >
< div class = "line" > < a id = "l00242" name = "l00242" > < / a > < span class = "lineno" > 242< / span > drat_proof_handler_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a98bacf41c50979896b4a5f5e41fb0ccf" > AddClause< / a > ({literals[0]});< / div >
< div class = "line" > < a id = "l00243" name = "l00243" > < / a > < span class = "lineno" > 243< / span > }< / div >
< div class = "line" > < a id = "l00244" name = "l00244" > < / a > < span class = "lineno" > 244< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#afb89e56bea39296ff292b51a84491875" > EnqueueWithUnitReason< / a > (literals[0]);< / div >
< div class = "line" > < a id = "l00245" name = "l00245" > < / a > < span class = "lineno" > 245< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (literals.size() == 2) {< / div >
< div class = "line" > < a id = "l00246" name = "l00246" > < / a > < span class = "lineno" > 246< / span > < span class = "comment" > // TODO(user): Make sure the presolve do not generate such clauses.< / span > < / div >
< div class = "line" > < a id = "l00247" name = "l00247" > < / a > < span class = "lineno" > 247< / span > < span class = "keywordflow" > if< / span > (literals[0] == literals[1]) {< / div >
< div class = "line" > < a id = "l00248" name = "l00248" > < / a > < span class = "lineno" > 248< / span > < span class = "comment" > // Literal must be true.< / span > < / div >
< div class = "line" > < a id = "l00249" name = "l00249" > < / a > < span class = "lineno" > 249< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#afb89e56bea39296ff292b51a84491875" > EnqueueWithUnitReason< / a > (literals[0]);< / div >
< div class = "line" > < a id = "l00250" name = "l00250" > < / a > < span class = "lineno" > 250< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (literals[0] == literals[1].Negated()) {< / div >
< div class = "line" > < a id = "l00251" name = "l00251" > < / a > < span class = "lineno" > 251< / span > < span class = "comment" > // Always true.< / span > < / div >
< div class = "line" > < a id = "l00252" name = "l00252" > < / a > < span class = "lineno" > 252< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00253" name = "l00253" > < / a > < span class = "lineno" > 253< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00254" name = "l00254" > < / a > < span class = "lineno" > 254< / span > AddBinaryClauseInternal(literals[0], literals[1],< / div >
< div class = "line" > < a id = "l00255" name = "l00255" > < / a > < span class = "lineno" > 255< / span > < span class = "comment" > /*export_clause=*/< / span > < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a id = "l00256" name = "l00256" > < / a > < span class = "lineno" > 256< / span > }< / div >
< div class = "line" > < a id = "l00257" name = "l00257" > < / a > < span class = "lineno" > 257< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00258" name = "l00258" > < / a > < span class = "lineno" > 258< / span > < span class = "keywordflow" > if< / span > (!clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#aaec5e05be5e5e385c6222c023587cb05" > AddClause< / a > (literals, trail_)) {< / div >
< div class = "line" > < a id = "l00259" name = "l00259" > < / a > < span class = "lineno" > 259< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00260" name = "l00260" > < / a > < span class = "lineno" > 260< / span > }< / div >
< div class = "line" > < a id = "l00261" name = "l00261" > < / a > < span class = "lineno" > 261< / span > }< / div >
< div class = "line" > < a id = "l00262" name = "l00262" > < / a > < span class = "lineno" > 262< / span > < / div >
< div class = "line" > < a id = "l00263" name = "l00263" > < / a > < span class = "lineno" > 263< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00264" name = "l00264" > < / a > < span class = "lineno" > 264< / span > }< / div >
< div class = "line" > < a id = "l00265" name = "l00265" > < / a > < span class = "lineno" > 265< / span > < / div >
< div class = "line" > < a id = "l00266" name = "l00266" > < / a > < span class = "lineno" > 266< / span > < span class = "keywordtype" > bool< / span > SatSolver::AddLinearConstraintInternal(< / div >
< div class = "line" > < a id = "l00267" name = "l00267" > < / a > < span class = "lineno" > 267< / span > < span class = "keyword" > const< / span > std::vector< LiteralWithCoeff> & cst, < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > rhs,< / div >
< div class = "line" > < a id = "l00268" name = "l00268" > < / a > < span class = "lineno" > 268< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > max_value) {< / div >
< div class = "line" > < a id = "l00269" name = "l00269" > < / a > < span class = "lineno" > 269< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00270" name = "l00270" > < / a > < span class = "lineno" > 270< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#acf18431db5241d6ae15e5db2470d9079" > BooleanLinearExpressionIsCanonical< / a > (cst));< / div >
< div class = "line" > < a id = "l00271" name = "l00271" > < / a > < span class = "lineno" > 271< / span > < span class = "keywordflow" > if< / span > (rhs < 0) < span class = "keywordflow" > return< / span > SetModelUnsat(); < span class = "comment" > // Unsatisfiable constraint.< / span > < / div >
< div class = "line" > < a id = "l00272" name = "l00272" > < / a > < span class = "lineno" > 272< / span > < span class = "keywordflow" > if< / span > (rhs > = max_value) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ; < span class = "comment" > // Always satisfied constraint.< / span > < / div >
< div class = "line" > < a id = "l00273" name = "l00273" > < / a > < span class = "lineno" > 273< / span > < / div >
< div class = "line" > < a id = "l00274" name = "l00274" > < / a > < span class = "lineno" > 274< / span > < span class = "comment" > // The case " rhs = 0" will just fix variables, so there is no need to< / span > < / div >
< div class = "line" > < a id = "l00275" name = "l00275" > < / a > < span class = "lineno" > 275< / span > < span class = "comment" > // updates the weighted sign.< / span > < / div >
< div class = "line" > < a id = "l00276" name = "l00276" > < / a > < span class = "lineno" > 276< / span > < span class = "keywordflow" > if< / span > (rhs > 0) decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#acf5ac4ce7b95b26c0eadcd6b8cbffe74" > UpdateWeightedSign< / a > (cst, rhs);< / div >
< div class = "line" > < a id = "l00277" name = "l00277" > < / a > < span class = "lineno" > 277< / span > < / div >
< div class = "line" > < a id = "l00278" name = "l00278" > < / a > < span class = "lineno" > 278< / span > < span class = "comment" > // Since the constraint is in canonical form, the coefficients are sorted.< / span > < / div >
< div class = "line" > < a id = "l00279" name = "l00279" > < / a > < span class = "lineno" > 279< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > min_coeff = cst.front().coefficient;< / div >
< div class = "line" > < a id = "l00280" name = "l00280" > < / a > < span class = "lineno" > 280< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > max_coeff = cst.back().coefficient;< / div >
< div class = "line" > < a id = "l00281" name = "l00281" > < / a > < span class = "lineno" > 281< / span > < / div >
< div class = "line" > < a id = "l00282" name = "l00282" > < / a > < span class = "lineno" > 282< / span > < span class = "comment" > // A linear upper bounded constraint is a clause if the only problematic< / span > < / div >
< div class = "line" > < a id = "l00283" name = "l00283" > < / a > < span class = "lineno" > 283< / span > < span class = "comment" > // assignment is the one where all the literals are true.< / span > < / div >
< div class = "line" > < a id = "l00284" name = "l00284" > < / a > < span class = "lineno" > 284< / span > < span class = "keywordflow" > if< / span > (max_value - min_coeff < = rhs) {< / div >
< div class = "line" > < a id = "l00285" name = "l00285" > < / a > < span class = "lineno" > 285< / span > < span class = "comment" > // This constraint is actually a clause. It is faster to treat it as one.< / span > < / div >
< div class = "line" > < a id = "l00286" name = "l00286" > < / a > < span class = "lineno" > 286< / span > literals_scratchpad_.clear();< / div >
< div class = "line" > < a id = "l00287" name = "l00287" > < / a > < span class = "lineno" > 287< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > LiteralWithCoeff& term : cst) {< / div >
< div class = "line" > < a id = "l00288" name = "l00288" > < / a > < span class = "lineno" > 288< / span > literals_scratchpad_.push_back(term.literal.Negated());< / div >
< div class = "line" > < a id = "l00289" name = "l00289" > < / a > < span class = "lineno" > 289< / span > }< / div >
< div class = "line" > < a id = "l00290" name = "l00290" > < / a > < span class = "lineno" > 290< / span > < span class = "keywordflow" > return< / span > AddProblemClauseInternal(literals_scratchpad_);< / div >
< div class = "line" > < a id = "l00291" name = "l00291" > < / a > < span class = "lineno" > 291< / span > }< / div >
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< div class = "line" > < a id = "l00292" name = "l00292" > < / a > < span class = "lineno" > 292< / span > < / div >
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< div class = "line" > < a id = "l00293" name = "l00293" > < / a > < span class = "lineno" > 293< / span > < span class = "comment" > // Detect at most one constraints. Note that this use the fact that the< / span > < / div >
< div class = "line" > < a id = "l00294" name = "l00294" > < / a > < span class = "lineno" > 294< / span > < span class = "comment" > // coefficient are sorted.< / span > < / div >
< div class = "line" > < a id = "l00295" name = "l00295" > < / a > < span class = "lineno" > 295< / span > < span class = "keywordflow" > if< / span > (!parameters_-> use_pb_resolution() & & max_coeff < = rhs & & < / div >
< div class = "line" > < a id = "l00296" name = "l00296" > < / a > < span class = "lineno" > 296< / span > 2 * min_coeff > rhs) {< / div >
< div class = "line" > < a id = "l00297" name = "l00297" > < / a > < span class = "lineno" > 297< / span > literals_scratchpad_.clear();< / div >
< div class = "line" > < a id = "l00298" name = "l00298" > < / a > < span class = "lineno" > 298< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > LiteralWithCoeff& term : cst) {< / div >
< div class = "line" > < a id = "l00299" name = "l00299" > < / a > < span class = "lineno" > 299< / span > literals_scratchpad_.push_back(term.literal);< / div >
< div class = "line" > < a id = "l00300" name = "l00300" > < / a > < span class = "lineno" > 300< / span > }< / div >
< div class = "line" > < a id = "l00301" name = "l00301" > < / a > < span class = "lineno" > 301< / span > < span class = "keywordflow" > if< / span > (!binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#aec717d6bc59b3b48bb21276a081c62c1" > AddAtMostOne< / a > (literals_scratchpad_)) {< / div >
< div class = "line" > < a id = "l00302" name = "l00302" > < / a > < span class = "lineno" > 302< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00303" name = "l00303" > < / a > < span class = "lineno" > 303< / span > }< / div >
< div class = "line" > < a id = "l00304" name = "l00304" > < / a > < span class = "lineno" > 304< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00305" name = "l00305" > < / a > < span class = "lineno" > 305< / span > }< / div >
< div class = "line" > < a id = "l00306" name = "l00306" > < / a > < span class = "lineno" > 306< / span > < / div >
< div class = "line" > < a id = "l00307" name = "l00307" > < / a > < span class = "lineno" > 307< / span > problem_is_pure_sat_ = < span class = "keyword" > false< / span > ;< / div >
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< div class = "line" > < a id = "l00308" name = "l00308" > < / a > < span class = "lineno" > 308< / span > < / div >
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< div class = "line" > < a id = "l00309" name = "l00309" > < / a > < span class = "lineno" > 309< / span > < span class = "comment" > // TODO(user): If this constraint forces all its literal to false (when rhs is< / span > < / div >
< div class = "line" > < a id = "l00310" name = "l00310" > < / a > < span class = "lineno" > 310< / span > < span class = "comment" > // zero for instance), we still add it. Optimize this?< / span > < / div >
< div class = "line" > < a id = "l00311" name = "l00311" > < / a > < span class = "lineno" > 311< / span > < span class = "keywordflow" > return< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a668f93c96cd8a83dd4bf3da35ba8b7b0" > AddConstraint< / a > (cst, rhs, trail_);< / div >
< div class = "line" > < a id = "l00312" name = "l00312" > < / a > < span class = "lineno" > 312< / span > }< / div >
< div class = "line" > < a id = "l00313" name = "l00313" > < / a > < span class = "lineno" > 313< / span > < / div >
< div class = "line" > < a id = "l00314" name = "l00314" > < / a > < span class = "lineno" > 314< / span > < span class = "keywordtype" > void< / span > SatSolver::CanonicalizeLinear(std::vector< LiteralWithCoeff> * cst,< / div >
< div class = "line" > < a id = "l00315" name = "l00315" > < / a > < span class = "lineno" > 315< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > * bound_shift,< / div >
< div class = "line" > < a id = "l00316" name = "l00316" > < / a > < span class = "lineno" > 316< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > * max_value) {< / div >
< div class = "line" > < a id = "l00317" name = "l00317" > < / a > < span class = "lineno" > 317< / span > < span class = "comment" > // This block removes assigned literals from the constraint.< / span > < / div >
< div class = "line" > < a id = "l00318" name = "l00318" > < / a > < span class = "lineno" > 318< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > fixed_variable_shift(0);< / div >
< div class = "line" > < a id = "l00319" name = "l00319" > < / a > < span class = "lineno" > 319< / span > {< / div >
< div class = "line" > < a id = "l00320" name = "l00320" > < / a > < span class = "lineno" > 320< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = 0;< / div >
< div class = "line" > < a id = "l00321" name = "l00321" > < / a > < span class = "lineno" > 321< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > LiteralWithCoeff& term : *cst) {< / div >
< div class = "line" > < a id = "l00322" name = "l00322" > < / a > < span class = "lineno" > 322< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5" > LiteralIsFalse< / a > (term.literal)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00323" name = "l00323" > < / a > < span class = "lineno" > 323< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (term.literal)) {< / div >
< div class = "line" > < a id = "l00324" name = "l00324" > < / a > < span class = "lineno" > 324< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (< a class = "code hl_function" href = "namespaceoperations__research.html#ae1bd0133149b70b678b123524541aaad" > SafeAddInto< / a > (-term.coefficient, & fixed_variable_shift));< / div >
< div class = "line" > < a id = "l00325" name = "l00325" > < / a > < span class = "lineno" > 325< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00326" name = "l00326" > < / a > < span class = "lineno" > 326< / span > }< / div >
< div class = "line" > < a id = "l00327" name = "l00327" > < / a > < span class = "lineno" > 327< / span > (*cst)[< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ] = term;< / div >
< div class = "line" > < a id = "l00328" name = "l00328" > < / a > < span class = "lineno" > 328< / span > ++< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ;< / div >
< div class = "line" > < a id = "l00329" name = "l00329" > < / a > < span class = "lineno" > 329< / span > }< / div >
< div class = "line" > < a id = "l00330" name = "l00330" > < / a > < span class = "lineno" > 330< / span > cst-> resize(< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > );< / div >
< div class = "line" > < a id = "l00331" name = "l00331" > < / a > < span class = "lineno" > 331< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00332" name = "l00332" > < / a > < span class = "lineno" > 332< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00333" name = "l00333" > < / a > < span class = "lineno" > 333< / span > < span class = "comment" > // Now we canonicalize.< / span > < / div >
< div class = "line" > < a id = "l00334" name = "l00334" > < / a > < span class = "lineno" > 334< / span > < span class = "comment" > // TODO(user): fix variables that must be true/false and remove them.< / span > < / div >
< div class = "line" > < a id = "l00335" name = "l00335" > < / a > < span class = "lineno" > 335< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > bound_delta(0);< / div >
< div class = "line" > < a id = "l00336" name = "l00336" > < / a > < span class = "lineno" > 336< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8860b588974cb8ffaf2ac97eafd67b3e" > ComputeBooleanLinearExpressionCanonicalForm< / a > (cst, & bound_delta,< / div >
< div class = "line" > < a id = "l00337" name = "l00337" > < / a > < span class = "lineno" > 337< / span > max_value));< / div >
< div class = "line" > < a id = "l00338" name = "l00338" > < / a > < span class = "lineno" > 338< / span > < / div >
< div class = "line" > < a id = "l00339" name = "l00339" > < / a > < span class = "lineno" > 339< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (< a class = "code hl_function" href = "namespaceoperations__research.html#ae1bd0133149b70b678b123524541aaad" > SafeAddInto< / a > (bound_delta, bound_shift));< / div >
< div class = "line" > < a id = "l00340" name = "l00340" > < / a > < span class = "lineno" > 340< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (< a class = "code hl_function" href = "namespaceoperations__research.html#ae1bd0133149b70b678b123524541aaad" > SafeAddInto< / a > (fixed_variable_shift, bound_shift));< / div >
< div class = "line" > < a id = "l00341" name = "l00341" > < / a > < span class = "lineno" > 341< / span > }< / div >
< div class = "line" > < a id = "l00342" name = "l00342" > < / a > < span class = "lineno" > 342< / span > < / div >
< div class = "line" > < a id = "l00343" name = "l00343" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a05c49a95f6af6f8d873c96cae6ab6653" > 343< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a05c49a95f6af6f8d873c96cae6ab6653" > SatSolver::AddLinearConstraint< / a > (< span class = "keywordtype" > bool< / span > use_lower_bound,< / div >
< div class = "line" > < a id = "l00344" name = "l00344" > < / a > < span class = "lineno" > 344< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > < a class = "code hl_variable" href = "gscip__solver_8cc.html#a1e2f9a2352c1d9a6cada9544898fceec" > lower_bound< / a > ,< / div >
< div class = "line" > < a id = "l00345" name = "l00345" > < / a > < span class = "lineno" > 345< / span > < span class = "keywordtype" > bool< / span > use_upper_bound,< / div >
< div class = "line" > < a id = "l00346" name = "l00346" > < / a > < span class = "lineno" > 346< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > < a class = "code hl_variable" href = "gscip__solver_8cc.html#a1ba5ca0f61f2fa13bd23bf0f89004f35" > upper_bound< / a > ,< / div >
< div class = "line" > < a id = "l00347" name = "l00347" > < / a > < span class = "lineno" > 347< / span > std::vector< LiteralWithCoeff> * cst) {< / div >
< div class = "line" > < a id = "l00348" name = "l00348" > < / a > < span class = "lineno" > 348< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00349" name = "l00349" > < / a > < span class = "lineno" > 349< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00350" name = "l00350" > < / a > < span class = "lineno" > 350< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00351" name = "l00351" > < / a > < span class = "lineno" > 351< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00352" name = "l00352" > < / a > < span class = "lineno" > 352< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > bound_shift(0);< / div >
< div class = "line" > < a id = "l00353" name = "l00353" > < / a > < span class = "lineno" > 353< / span > < / div >
< div class = "line" > < a id = "l00354" name = "l00354" > < / a > < span class = "lineno" > 354< / span > < span class = "keywordflow" > if< / span > (use_upper_bound) {< / div >
< div class = "line" > < a id = "l00355" name = "l00355" > < / a > < span class = "lineno" > 355< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > max_value(0);< / div >
< div class = "line" > < a id = "l00356" name = "l00356" > < / a > < span class = "lineno" > 356< / span > CanonicalizeLinear(cst, & bound_shift, & max_value);< / div >
< div class = "line" > < a id = "l00357" name = "l00357" > < / a > < span class = "lineno" > 357< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > rhs =< / div >
< div class = "line" > < a id = "l00358" name = "l00358" > < / a > < span class = "lineno" > 358< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a01c76d0c46e2975d10e45ab04877f4ac" > ComputeCanonicalRhs< / a > (< a class = "code hl_variable" href = "gscip__solver_8cc.html#a1ba5ca0f61f2fa13bd23bf0f89004f35" > upper_bound< / a > , bound_shift, max_value);< / div >
< div class = "line" > < a id = "l00359" name = "l00359" > < / a > < span class = "lineno" > 359< / span > < span class = "keywordflow" > if< / span > (!AddLinearConstraintInternal(*cst, rhs, max_value)) {< / div >
< div class = "line" > < a id = "l00360" name = "l00360" > < / a > < span class = "lineno" > 360< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00361" name = "l00361" > < / a > < span class = "lineno" > 361< / span > }< / div >
< div class = "line" > < a id = "l00362" name = "l00362" > < / a > < span class = "lineno" > 362< / span > }< / div >
< div class = "line" > < a id = "l00363" name = "l00363" > < / a > < span class = "lineno" > 363< / span > < / div >
< div class = "line" > < a id = "l00364" name = "l00364" > < / a > < span class = "lineno" > 364< / span > < span class = "keywordflow" > if< / span > (use_lower_bound) {< / div >
< div class = "line" > < a id = "l00365" name = "l00365" > < / a > < span class = "lineno" > 365< / span > < span class = "comment" > // We need to " re-canonicalize" in case some literal were fixed while we< / span > < / div >
< div class = "line" > < a id = "l00366" name = "l00366" > < / a > < span class = "lineno" > 366< / span > < span class = "comment" > // processed one direction.< / span > < / div >
< div class = "line" > < a id = "l00367" name = "l00367" > < / a > < span class = "lineno" > 367< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > max_value(0);< / div >
< div class = "line" > < a id = "l00368" name = "l00368" > < / a > < span class = "lineno" > 368< / span > CanonicalizeLinear(cst, & bound_shift, & max_value);< / div >
< div class = "line" > < a id = "l00369" name = "l00369" > < / a > < span class = "lineno" > 369< / span > < / div >
< div class = "line" > < a id = "l00370" name = "l00370" > < / a > < span class = "lineno" > 370< / span > < span class = "comment" > // We transform the constraint into an upper-bounded one.< / span > < / div >
< div class = "line" > < a id = "l00371" name = "l00371" > < / a > < span class = "lineno" > 371< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < cst-> size(); ++i) {< / div >
< div class = "line" > < a id = "l00372" name = "l00372" > < / a > < span class = "lineno" > 372< / span > (*cst)[i].literal = (*cst)[i].literal.Negated();< / div >
< div class = "line" > < a id = "l00373" name = "l00373" > < / a > < span class = "lineno" > 373< / span > }< / div >
< div class = "line" > < a id = "l00374" name = "l00374" > < / a > < span class = "lineno" > 374< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > rhs =< / div >
< div class = "line" > < a id = "l00375" name = "l00375" > < / a > < span class = "lineno" > 375< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5c5399274f079c718ec46bf4b3032d27" > ComputeNegatedCanonicalRhs< / a > (< a class = "code hl_variable" href = "gscip__solver_8cc.html#a1e2f9a2352c1d9a6cada9544898fceec" > lower_bound< / a > , bound_shift, max_value);< / div >
< div class = "line" > < a id = "l00376" name = "l00376" > < / a > < span class = "lineno" > 376< / span > < span class = "keywordflow" > if< / span > (!AddLinearConstraintInternal(*cst, rhs, max_value)) {< / div >
< div class = "line" > < a id = "l00377" name = "l00377" > < / a > < span class = "lineno" > 377< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00378" name = "l00378" > < / a > < span class = "lineno" > 378< / span > }< / div >
< div class = "line" > < a id = "l00379" name = "l00379" > < / a > < span class = "lineno" > 379< / span > }< / div >
< div class = "line" > < a id = "l00380" name = "l00380" > < / a > < span class = "lineno" > 380< / span > < / div >
< div class = "line" > < a id = "l00381" name = "l00381" > < / a > < span class = "lineno" > 381< / span > < span class = "comment" > // Tricky: The PropagationIsDone() condition shouldn' t change anything for a< / span > < / div >
< div class = "line" > < a id = "l00382" name = "l00382" > < / a > < span class = "lineno" > 382< / span > < span class = "comment" > // pure SAT problem, however in the CP-SAT context, calling Propagate() can< / span > < / div >
< div class = "line" > < a id = "l00383" name = "l00383" > < / a > < span class = "lineno" > 383< / span > < span class = "comment" > // tigger computation (like the LP) even if no domain changed since the last< / span > < / div >
< div class = "line" > < a id = "l00384" name = "l00384" > < / a > < span class = "lineno" > 384< / span > < span class = "comment" > // call. We do not want to do that.< / span > < / div >
< div class = "line" > < a id = "l00385" name = "l00385" > < / a > < span class = "lineno" > 385< / span > < span class = "keywordflow" > if< / span > (!PropagationIsDone() & & !< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > Propagate< / a > ()) {< / div >
< div class = "line" > < a id = "l00386" name = "l00386" > < / a > < span class = "lineno" > 386< / span > < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00387" name = "l00387" > < / a > < span class = "lineno" > 387< / span > }< / div >
< div class = "line" > < a id = "l00388" name = "l00388" > < / a > < span class = "lineno" > 388< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00389" name = "l00389" > < / a > < span class = "lineno" > 389< / span > }< / div >
< div class = "line" > < a id = "l00390" name = "l00390" > < / a > < span class = "lineno" > 390< / span > < / div >
< div class = "line" > < a id = "l00391" name = "l00391" > < / a > < span class = "lineno" > 391< / span > < span class = "keywordtype" > int< / span > SatSolver::AddLearnedClauseAndEnqueueUnitPropagation(< / div >
< div class = "line" > < a id = "l00392" name = "l00392" > < / a > < span class = "lineno" > 392< / span > < span class = "keyword" > const< / span > std::vector< Literal> & literals, < span class = "keywordtype" > bool< / span > is_redundant) {< / div >
< div class = "line" > < a id = "l00393" name = "l00393" > < / a > < span class = "lineno" > 393< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00394" name = "l00394" > < / a > < span class = "lineno" > 394< / span > < / div >
< div class = "line" > < a id = "l00395" name = "l00395" > < / a > < span class = "lineno" > 395< / span > < span class = "keywordflow" > if< / span > (literals.size() == 1) {< / div >
< div class = "line" > < a id = "l00396" name = "l00396" > < / a > < span class = "lineno" > 396< / span > < span class = "comment" > // A length 1 clause fix a literal for all the search.< / span > < / div >
< div class = "line" > < a id = "l00397" name = "l00397" > < / a > < span class = "lineno" > 397< / span > < span class = "comment" > // ComputeBacktrackLevel() should have returned 0.< / span > < / div >
< div class = "line" > < a id = "l00398" name = "l00398" > < / a > < span class = "lineno" > 398< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00399" name = "l00399" > < / a > < span class = "lineno" > 399< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#afb89e56bea39296ff292b51a84491875" > EnqueueWithUnitReason< / a > (literals[0]);< / div >
< div class = "line" > < a id = "l00400" name = "l00400" > < / a > < span class = "lineno" > 400< / span > < span class = "keywordflow" > return< / span > < span class = "comment" > /*lbd=*/< / span > 1;< / div >
< div class = "line" > < a id = "l00401" name = "l00401" > < / a > < span class = "lineno" > 401< / span > }< / div >
< div class = "line" > < a id = "l00402" name = "l00402" > < / a > < span class = "lineno" > 402< / span > < / div >
< div class = "line" > < a id = "l00403" name = "l00403" > < / a > < span class = "lineno" > 403< / span > < span class = "keywordflow" > if< / span > (literals.size() == 2) {< / div >
< div class = "line" > < a id = "l00404" name = "l00404" > < / a > < span class = "lineno" > 404< / span > < span class = "keywordflow" > if< / span > (track_binary_clauses_) {< / div >
< div class = "line" > < a id = "l00405" name = "l00405" > < / a > < span class = "lineno" > 405< / span > < span class = "comment" > // This clause MUST be knew, otherwise something is wrong.< / span > < / div >
< div class = "line" > < a id = "l00406" name = "l00406" > < / a > < span class = "lineno" > 406< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (binary_clauses_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_clause_manager.html#a4690b2e5ad68f70322cca80950f5bf7d" > Add< / a > (BinaryClause(literals[0], literals[1])));< / div >
< div class = "line" > < a id = "l00407" name = "l00407" > < / a > < span class = "lineno" > 407< / span > }< / div >
< div class = "line" > < a id = "l00408" name = "l00408" > < / a > < span class = "lineno" > 408< / span > < span class = "keywordflow" > if< / span > (shared_binary_clauses_callback_ != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l00409" name = "l00409" > < / a > < span class = "lineno" > 409< / span > shared_binary_clauses_callback_(literals[0], literals[1]);< / div >
< div class = "line" > < a id = "l00410" name = "l00410" > < / a > < span class = "lineno" > 410< / span > }< / div >
< div class = "line" > < a id = "l00411" name = "l00411" > < / a > < span class = "lineno" > 411< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a4a2107f2a0daf6968b6c0dded5964497" > AddBinaryClauseDuringSearch< / a > (literals[0],< / div >
< div class = "line" > < a id = "l00412" name = "l00412" > < / a > < span class = "lineno" > 412< / span > literals[1]));< / div >
< div class = "line" > < a id = "l00413" name = "l00413" > < / a > < span class = "lineno" > 413< / span > < span class = "keywordflow" > return< / span > < span class = "comment" > /*lbd=*/< / span > 2;< / div >
< div class = "line" > < a id = "l00414" name = "l00414" > < / a > < span class = "lineno" > 414< / span > }< / div >
< div class = "line" > < a id = "l00415" name = "l00415" > < / a > < span class = "lineno" > 415< / span > < / div >
< div class = "line" > < a id = "l00416" name = "l00416" > < / a > < span class = "lineno" > 416< / span > CleanClauseDatabaseIfNeeded();< / div >
< div class = "line" > < a id = "l00417" name = "l00417" > < / a > < span class = "lineno" > 417< / span > < / div >
< div class = "line" > < a id = "l00418" name = "l00418" > < / a > < span class = "lineno" > 418< / span > < span class = "comment" > // Important: Even though the only literal at the last decision level has< / span > < / div >
< div class = "line" > < a id = "l00419" name = "l00419" > < / a > < span class = "lineno" > 419< / span > < span class = "comment" > // been unassigned, its level was not modified, so ComputeLbd() works.< / span > < / div >
< div class = "line" > < a id = "l00420" name = "l00420" > < / a > < span class = "lineno" > 420< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > lbd = ComputeLbd(literals);< / div >
< div class = "line" > < a id = "l00421" name = "l00421" > < / a > < span class = "lineno" > 421< / span > < span class = "keywordflow" > if< / span > (is_redundant & & lbd > parameters_-> clause_cleanup_lbd_bound()) {< / div >
< div class = "line" > < a id = "l00422" name = "l00422" > < / a > < span class = "lineno" > 422< / span > --num_learned_clause_before_cleanup_;< / div >
< div class = "line" > < a id = "l00423" name = "l00423" > < / a > < span class = "lineno" > 423< / span > < / div >
< div class = "line" > < a id = "l00424" name = "l00424" > < / a > < span class = "lineno" > 424< / span > SatClause* clause =< / div >
< div class = "line" > < a id = "l00425" name = "l00425" > < / a > < span class = "lineno" > 425< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a6af58ea401f90fe1a40be4558dba478a" > AddRemovableClause< / a > (literals, trail_);< / div >
< div class = "line" > < a id = "l00426" name = "l00426" > < / a > < span class = "lineno" > 426< / span > < / div >
< div class = "line" > < a id = "l00427" name = "l00427" > < / a > < span class = "lineno" > 427< / span > < span class = "comment" > // BumpClauseActivity() must be called after clauses_info_[clause] has< / span > < / div >
< div class = "line" > < a id = "l00428" name = "l00428" > < / a > < span class = "lineno" > 428< / span > < span class = "comment" > // been created or it will have no effect.< / span > < / div >
< div class = "line" > < a id = "l00429" name = "l00429" > < / a > < span class = "lineno" > 429< / span > (*clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > mutable_clauses_info< / a > ())[clause].lbd = lbd;< / div >
< div class = "line" > < a id = "l00430" name = "l00430" > < / a > < span class = "lineno" > 430< / span > BumpClauseActivity(clause);< / div >
< div class = "line" > < a id = "l00431" name = "l00431" > < / a > < span class = "lineno" > 431< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00432" name = "l00432" > < / a > < span class = "lineno" > 432< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#aaec5e05be5e5e385c6222c023587cb05" > AddClause< / a > (literals, trail_));< / div >
< div class = "line" > < a id = "l00433" name = "l00433" > < / a > < span class = "lineno" > 433< / span > }< / div >
< div class = "line" > < a id = "l00434" name = "l00434" > < / a > < span class = "lineno" > 434< / span > < span class = "keywordflow" > return< / span > lbd;< / div >
< div class = "line" > < a id = "l00435" name = "l00435" > < / a > < span class = "lineno" > 435< / span > }< / div >
< div class = "line" > < a id = "l00436" name = "l00436" > < / a > < span class = "lineno" > 436< / span > < / div >
< div class = "line" > < a id = "l00437" name = "l00437" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2d1cea64152ca53ac5df160b48059800" > 437< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2d1cea64152ca53ac5df160b48059800" > SatSolver::AddPropagator< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_propagator.html" > SatPropagator< / a > * propagator) {< / div >
< div class = "line" > < a id = "l00438" name = "l00438" > < / a > < span class = "lineno" > 438< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00439" name = "l00439" > < / a > < span class = "lineno" > 439< / span > problem_is_pure_sat_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00440" name = "l00440" > < / a > < span class = "lineno" > 440< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a120ef5f82f667fe8a6a38db137bfd2a7" > RegisterPropagator< / a > (propagator);< / div >
< div class = "line" > < a id = "l00441" name = "l00441" > < / a > < span class = "lineno" > 441< / span > external_propagators_.push_back(propagator);< / div >
< div class = "line" > < a id = "l00442" name = "l00442" > < / a > < span class = "lineno" > 442< / span > InitializePropagators();< / div >
< div class = "line" > < a id = "l00443" name = "l00443" > < / a > < span class = "lineno" > 443< / span > }< / div >
< div class = "line" > < a id = "l00444" name = "l00444" > < / a > < span class = "lineno" > 444< / span > < / div >
< div class = "line" > < a id = "l00445" name = "l00445" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a17c09186d8dd4922296e97185f685c97" > 445< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a17c09186d8dd4922296e97185f685c97" > SatSolver::AddLastPropagator< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_propagator.html" > SatPropagator< / a > * propagator) {< / div >
< div class = "line" > < a id = "l00446" name = "l00446" > < / a > < span class = "lineno" > 446< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l00447" name = "l00447" > < / a > < span class = "lineno" > 447< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (last_propagator_ == < span class = "keyword" > nullptr< / span > );< / div >
< div class = "line" > < a id = "l00448" name = "l00448" > < / a > < span class = "lineno" > 448< / span > problem_is_pure_sat_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00449" name = "l00449" > < / a > < span class = "lineno" > 449< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a120ef5f82f667fe8a6a38db137bfd2a7" > RegisterPropagator< / a > (propagator);< / div >
< div class = "line" > < a id = "l00450" name = "l00450" > < / a > < span class = "lineno" > 450< / span > last_propagator_ = propagator;< / div >
< div class = "line" > < a id = "l00451" name = "l00451" > < / a > < span class = "lineno" > 451< / span > InitializePropagators();< / div >
< div class = "line" > < a id = "l00452" name = "l00452" > < / a > < span class = "lineno" > 452< / span > }< / div >
< div class = "line" > < a id = "l00453" name = "l00453" > < / a > < span class = "lineno" > 453< / span > < / div >
< div class = "line" > < a id = "l00454" name = "l00454" > < / a > < span class = "lineno" > 454< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_upper_bounded_linear_constraint.html" > UpperBoundedLinearConstraint< / a > * SatSolver::ReasonPbConstraintOrNull(< / div >
< div class = "line" > < a id = "l00455" name = "l00455" > < / a > < span class = "lineno" > 455< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > )< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00456" name = "l00456" > < / a > < span class = "lineno" > 456< / span > < span class = "comment" > // It is important to deal properly with " SameReasonAs" variables here.< / span > < / div >
< div class = "line" > < a id = "l00457" name = "l00457" > < / a > < span class = "lineno" > 457< / span > < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a89ab9ae41ab13f8847ac18e8beac37ed" > ReferenceVarWithSameReason< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l00458" name = "l00458" > < / a > < span class = "lineno" > 458< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_assignment_info.html" > AssignmentInfo< / a > & info = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l00459" name = "l00459" > < / a > < span class = "lineno" > 459< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a5ed9d5f5c759afe4a008adaabd80c6f8" > AssignmentType< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ) == pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_propagator.html#a5298758773353d79435345e19a7b3a38" > PropagatorId< / a > ()) {< / div >
< div class = "line" > < a id = "l00460" name = "l00460" > < / a > < span class = "lineno" > 460< / span > < span class = "keywordflow" > return< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#ab00d5c5d5edf37a9568363ba39e02c11" > ReasonPbConstraint< / a > (info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a0f2d611d5c2d56f60646827438acf3af" > trail_index< / a > );< / div >
< div class = "line" > < a id = "l00461" name = "l00461" > < / a > < span class = "lineno" > 461< / span > }< / div >
< div class = "line" > < a id = "l00462" name = "l00462" > < / a > < span class = "lineno" > 462< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > nullptr< / span > ;< / div >
< div class = "line" > < a id = "l00463" name = "l00463" > < / a > < span class = "lineno" > 463< / span > }< / div >
< div class = "line" > < a id = "l00464" name = "l00464" > < / a > < span class = "lineno" > 464< / span > < / div >
< div class = "line" > < a id = "l00465" name = "l00465" > < / a > < span class = "lineno" > 465< / span > SatClause* SatSolver::ReasonClauseOrNull(BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > )< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00466" name = "l00466" > < / a > < span class = "lineno" > 466< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a49e751eb6f0e9babd957889bb8e7472d" > VariableIsAssigned< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ));< / div >
< div class = "line" > < a id = "l00467" name = "l00467" > < / a > < span class = "lineno" > 467< / span > < span class = "keyword" > const< / span > AssignmentInfo& info = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l00468" name = "l00468" > < / a > < span class = "lineno" > 468< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a5ed9d5f5c759afe4a008adaabd80c6f8" > AssignmentType< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ) == clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_propagator.html#a5298758773353d79435345e19a7b3a38" > PropagatorId< / a > ()) {< / div >
< div class = "line" > < a id = "l00469" name = "l00469" > < / a > < span class = "lineno" > 469< / span > < span class = "keywordflow" > return< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#aaf9f3bc83c843a94dd2240e2a81a5e3b" > ReasonClause< / a > (info.trail_index);< / div >
< div class = "line" > < a id = "l00470" name = "l00470" > < / a > < span class = "lineno" > 470< / span > }< / div >
< div class = "line" > < a id = "l00471" name = "l00471" > < / a > < span class = "lineno" > 471< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > nullptr< / span > ;< / div >
< div class = "line" > < a id = "l00472" name = "l00472" > < / a > < span class = "lineno" > 472< / span > }< / div >
< div class = "line" > < a id = "l00473" name = "l00473" > < / a > < span class = "lineno" > 473< / span > < / div >
< div class = "line" > < a id = "l00474" name = "l00474" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a68050818df324a24e6309055e857b955" > 474< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a68050818df324a24e6309055e857b955" > SatSolver::SaveDebugAssignment< / a > () {< / div >
< div class = "line" > < a id = "l00475" name = "l00475" > < / a > < span class = "lineno" > 475< / span > debug_assignment_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#af7fbbd00f0e631ce361b5ce6636b2017" > Resize< / a > (num_variables_.value());< / div >
< div class = "line" > < a id = "l00476" name = "l00476" > < / a > < span class = "lineno" > 476< / span > < span class = "keywordflow" > for< / span > (BooleanVariable i(0); i < num_variables_; ++i) {< / div >
< div class = "line" > < a id = "l00477" name = "l00477" > < / a > < span class = "lineno" > 477< / span > debug_assignment_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a945bb6c1e83f281fdde5778473a12b37" > AssignFromTrueLiteral< / a > (< / div >
< div class = "line" > < a id = "l00478" name = "l00478" > < / a > < span class = "lineno" > 478< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#ac821b9b8b54da703731ce70864668a89" > GetTrueLiteralForAssignedVariable< / a > (i));< / div >
< div class = "line" > < a id = "l00479" name = "l00479" > < / a > < span class = "lineno" > 479< / span > }< / div >
< div class = "line" > < a id = "l00480" name = "l00480" > < / a > < span class = "lineno" > 480< / span > }< / div >
< div class = "line" > < a id = "l00481" name = "l00481" > < / a > < span class = "lineno" > 481< / span > < / div >
< div class = "line" > < a id = "l00482" name = "l00482" > < / a > < span class = "lineno" > 482< / span > < span class = "keywordtype" > void< / span > SatSolver::AddBinaryClauseInternal(< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ,< / div >
< div class = "line" > < a id = "l00483" name = "l00483" > < / a > < span class = "lineno" > 483< / span > < span class = "keywordtype" > bool< / span > export_clause) {< / div >
< div class = "line" > < a id = "l00484" name = "l00484" > < / a > < span class = "lineno" > 484< / span > < span class = "keywordflow" > if< / span > (track_binary_clauses_) {< / div >
< div class = "line" > < a id = "l00485" name = "l00485" > < / a > < span class = "lineno" > 485< / span > < span class = "comment" > // Abort if this clause was already added.< / span > < / div >
< div class = "line" > < a id = "l00486" name = "l00486" > < / a > < span class = "lineno" > 486< / span > < span class = "keywordflow" > if< / span > (!binary_clauses_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_clause_manager.html#a4690b2e5ad68f70322cca80950f5bf7d" > Add< / a > (< a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_binary_clause.html" > BinaryClause< / a > (< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ))) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l00487" name = "l00487" > < / a > < span class = "lineno" > 487< / span > }< / div >
< div class = "line" > < a id = "l00488" name = "l00488" > < / a > < span class = "lineno" > 488< / span > < / div >
< div class = "line" > < a id = "l00489" name = "l00489" > < / a > < span class = "lineno" > 489< / span > < span class = "keywordflow" > if< / span > (export_clause & & shared_binary_clauses_callback_ != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l00490" name = "l00490" > < / a > < span class = "lineno" > 490< / span > shared_binary_clauses_callback_(< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > );< / div >
< div class = "line" > < a id = "l00491" name = "l00491" > < / a > < span class = "lineno" > 491< / span > }< / div >
< div class = "line" > < a id = "l00492" name = "l00492" > < / a > < span class = "lineno" > 492< / span > < / div >
< div class = "line" > < a id = "l00493" name = "l00493" > < / a > < span class = "lineno" > 493< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a26fc07b3630b79be6914e6387b63a073" > AddBinaryClause< / a > (< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > );< / div >
< div class = "line" > < a id = "l00494" name = "l00494" > < / a > < span class = "lineno" > 494< / span > }< / div >
< div class = "line" > < a id = "l00495" name = "l00495" > < / a > < span class = "lineno" > 495< / span > < / div >
< div class = "line" > < a id = "l00496" name = "l00496" > < / a > < span class = "lineno" > 496< / span > < span class = "keywordtype" > bool< / span > SatSolver::ClauseIsValidUnderDebugAssignment(< / div >
< div class = "line" > < a id = "l00497" name = "l00497" > < / a > < span class = "lineno" > 497< / span > < span class = "keyword" > const< / span > std::vector< Literal> & clause)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00498" name = "l00498" > < / a > < span class = "lineno" > 498< / span > < span class = "keywordflow" > for< / span > (Literal l : clause) {< / div >
< div class = "line" > < a id = "l00499" name = "l00499" > < / a > < span class = "lineno" > 499< / span > < span class = "keywordflow" > if< / span > (l.Variable() > = debug_assignment_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#ae19413c447377161d432f18d1323a037" > NumberOfVariables< / a > () ||< / div >
< div class = "line" > < a id = "l00500" name = "l00500" > < / a > < span class = "lineno" > 500< / span > debug_assignment_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (l)) {< / div >
< div class = "line" > < a id = "l00501" name = "l00501" > < / a > < span class = "lineno" > 501< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00502" name = "l00502" > < / a > < span class = "lineno" > 502< / span > }< / div >
< div class = "line" > < a id = "l00503" name = "l00503" > < / a > < span class = "lineno" > 503< / span > }< / div >
< div class = "line" > < a id = "l00504" name = "l00504" > < / a > < span class = "lineno" > 504< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00505" name = "l00505" > < / a > < span class = "lineno" > 505< / span > }< / div >
< div class = "line" > < a id = "l00506" name = "l00506" > < / a > < span class = "lineno" > 506< / span > < / div >
< div class = "line" > < a id = "l00507" name = "l00507" > < / a > < span class = "lineno" > 507< / span > < span class = "keywordtype" > bool< / span > SatSolver::PBConstraintIsValidUnderDebugAssignment(< / div >
< div class = "line" > < a id = "l00508" name = "l00508" > < / a > < span class = "lineno" > 508< / span > < span class = "keyword" > const< / span > std::vector< LiteralWithCoeff> & cst, < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > rhs)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l00509" name = "l00509" > < / a > < span class = "lineno" > 509< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > sum(0.0);< / div >
< div class = "line" > < a id = "l00510" name = "l00510" > < / a > < span class = "lineno" > 510< / span > < span class = "keywordflow" > for< / span > (LiteralWithCoeff term : cst) {< / div >
< div class = "line" > < a id = "l00511" name = "l00511" > < / a > < span class = "lineno" > 511< / span > < span class = "keywordflow" > if< / span > (term.literal.Variable() > = debug_assignment_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#ae19413c447377161d432f18d1323a037" > NumberOfVariables< / a > ()) {< / div >
< div class = "line" > < a id = "l00512" name = "l00512" > < / a > < span class = "lineno" > 512< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00513" name = "l00513" > < / a > < span class = "lineno" > 513< / span > }< / div >
< div class = "line" > < a id = "l00514" name = "l00514" > < / a > < span class = "lineno" > 514< / span > < span class = "keywordflow" > if< / span > (debug_assignment_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (term.literal)) {< / div >
< div class = "line" > < a id = "l00515" name = "l00515" > < / a > < span class = "lineno" > 515< / span > sum += term.coefficient;< / div >
< div class = "line" > < a id = "l00516" name = "l00516" > < / a > < span class = "lineno" > 516< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00517" name = "l00517" > < / a > < span class = "lineno" > 517< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00518" name = "l00518" > < / a > < span class = "lineno" > 518< / span > < span class = "keywordflow" > return< / span > sum < = rhs;< / div >
< div class = "line" > < a id = "l00519" name = "l00519" > < / a > < span class = "lineno" > 519< / span > }< / div >
< div class = "line" > < a id = "l00520" name = "l00520" > < / a > < span class = "lineno" > 520< / span > < / div >
< div class = "line" > < a id = "l00521" name = "l00521" > < / a > < span class = "lineno" > 521< / span > < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a id = "l00522" name = "l00522" > < / a > < span class = "lineno" > 522< / span > < / div >
< div class = "line" > < a id = "l00523" name = "l00523" > < / a > < span class = "lineno" > 523< / span > < span class = "comment" > // Returns true iff ' b' is subsumed by ' a' (i.e ' a' is included in ' b' ).< / span > < / div >
< div class = "line" > < a id = "l00524" name = "l00524" > < / a > < span class = "lineno" > 524< / span > < span class = "comment" > // This is slow and only meant to be used in DCHECKs.< / span > < / div >
< div class = "line" > < a id = "l00525" name = "l00525" > < / a > < span class = "lineno" > 525< / span > < span class = "keywordtype" > bool< / span > ClauseSubsumption(< span class = "keyword" > const< / span > std::vector< Literal> & < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , SatClause* < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ) {< / div >
< div class = "line" > < a id = "l00526" name = "l00526" > < / a > < span class = "lineno" > 526< / span > std::vector< Literal> superset(< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > -> begin(), < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > -> end());< / div >
< div class = "line" > < a id = "l00527" name = "l00527" > < / a > < span class = "lineno" > 527< / span > std::vector< Literal> subset(< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .begin(), < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .end());< / div >
< div class = "line" > < a id = "l00528" name = "l00528" > < / a > < span class = "lineno" > 528< / span > std::sort(superset.begin(), superset.end());< / div >
< div class = "line" > < a id = "l00529" name = "l00529" > < / a > < span class = "lineno" > 529< / span > std::sort(subset.begin(), subset.end());< / div >
< div class = "line" > < a id = "l00530" name = "l00530" > < / a > < span class = "lineno" > 530< / span > < span class = "keywordflow" > return< / span > std::includes(superset.begin(), superset.end(), subset.begin(),< / div >
< div class = "line" > < a id = "l00531" name = "l00531" > < / a > < span class = "lineno" > 531< / span > subset.end());< / div >
< div class = "line" > < a id = "l00532" name = "l00532" > < / a > < span class = "lineno" > 532< / span > }< / div >
< div class = "line" > < a id = "l00533" name = "l00533" > < / a > < span class = "lineno" > 533< / span > < / div >
< div class = "line" > < a id = "l00534" name = "l00534" > < / a > < span class = "lineno" > 534< / span > } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a id = "l00535" name = "l00535" > < / a > < span class = "lineno" > 535< / span > < / div >
< div class = "line" > < a id = "l00536" name = "l00536" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9ae69b015a43c1a94e8815ab0dd8189c" > 536< / a > < / span > < span class = "keywordtype" > int< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9ae69b015a43c1a94e8815ab0dd8189c" > SatSolver::EnqueueDecisionAndBackjumpOnConflict< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > true_literal) {< / div >
< div class = "line" > < a id = "l00537" name = "l00537" > < / a > < span class = "lineno" > 537< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00538" name = "l00538" > < / a > < span class = "lineno" > 538< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "namespaceoperations__research_1_1sat.html#aed3a7826cb80e5dfe7cadb141fde73f2" > kUnsatTrailIndex< / a > ;< / div >
< div class = "line" > < a id = "l00539" name = "l00539" > < / a > < span class = "lineno" > 539< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (PropagationIsDone());< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00540" name = "l00540" > < / a > < span class = "lineno" > 540< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00541" name = "l00541" > < / a > < span class = "lineno" > 541< / span > < span class = "comment" > // We should never enqueue before the assumptions_.< / span > < / div >
< div class = "line" > < a id = "l00542" name = "l00542" > < / a > < span class = "lineno" > 542< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "macros_8h.html#a7f536a3b33f9bed8f75734e035d30725" > DEBUG_MODE< / a > & & !assumptions_.empty()) {< / div >
< div class = "line" > < a id = "l00543" name = "l00543" > < / a > < span class = "lineno" > 543< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9" > CHECK_GE< / a > (current_decision_level_, assumption_level_);< / div >
< div class = "line" > < a id = "l00544" name = "l00544" > < / a > < span class = "lineno" > 544< / span > }< / div >
< div class = "line" > < a id = "l00545" name = "l00545" > < / a > < span class = "lineno" > 545< / span > < / div >
< div class = "line" > < a id = "l00546" name = "l00546" > < / a > < span class = "lineno" > 546< / span > EnqueueNewDecision(true_literal);< / div >
< div class = "line" > < a id = "l00547" name = "l00547" > < / a > < span class = "lineno" > 547< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > FinishPropagation< / a > ()) < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "namespaceoperations__research_1_1sat.html#aed3a7826cb80e5dfe7cadb141fde73f2" > kUnsatTrailIndex< / a > ;< / div >
< div class = "line" > < a id = "l00548" name = "l00548" > < / a > < span class = "lineno" > 548< / span > < span class = "keywordflow" > return< / span > last_decision_or_backtrack_trail_index_;< / div >
< div class = "line" > < a id = "l00549" name = "l00549" > < / a > < span class = "lineno" > 549< / span > }< / div >
< div class = "line" > < a id = "l00550" name = "l00550" > < / a > < span class = "lineno" > 550< / span > < / div >
< div class = "line" > < a id = "l00551" name = "l00551" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac714aeb75f0f6dd87e52e5d1a0d6edc7" > 551< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac714aeb75f0f6dd87e52e5d1a0d6edc7" > SatSolver::RestoreSolverToAssumptionLevel< / a > () {< / div >
< div class = "line" > < a id = "l00552" name = "l00552" > < / a > < span class = "lineno" > 552< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00553" name = "l00553" > < / a > < span class = "lineno" > 553< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () > assumption_level_) {< / div >
< div class = "line" > < a id = "l00554" name = "l00554" > < / a > < span class = "lineno" > 554< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (assumption_level_);< / div >
< div class = "line" > < a id = "l00555" name = "l00555" > < / a > < span class = "lineno" > 555< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00556" name = "l00556" > < / a > < span class = "lineno" > 556< / span > }< / div >
< div class = "line" > < a id = "l00557" name = "l00557" > < / a > < span class = "lineno" > 557< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > FinishPropagation< / a > ()) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00558" name = "l00558" > < / a > < span class = "lineno" > 558< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad28cbdd5735a0c111a642f39524d969e" > ReapplyAssumptionsIfNeeded< / a > ();< / div >
< div class = "line" > < a id = "l00559" name = "l00559" > < / a > < span class = "lineno" > 559< / span > }< / div >
< div class = "line" > < a id = "l00560" name = "l00560" > < / a > < span class = "lineno" > 560< / span > < / div >
< div class = "line" > < a id = "l00561" name = "l00561" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > 561< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > SatSolver::FinishPropagation< / a > () {< / div >
< div class = "line" > < a id = "l00562" name = "l00562" > < / a > < span class = "lineno" > 562< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00563" name = "l00563" > < / a > < span class = "lineno" > 563< / span > < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
< div class = "line" > < a id = "l00564" name = "l00564" > < / a > < span class = "lineno" > 564< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > old_decision_level = current_decision_level_;< / div >
< div class = "line" > < a id = "l00565" name = "l00565" > < / a > < span class = "lineno" > 565< / span > < span class = "keywordflow" > if< / span > (!PropagateAndStopAfterOneConflictResolution()) {< / div >
< div class = "line" > < a id = "l00566" name = "l00566" > < / a > < span class = "lineno" > 566< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00567" name = "l00567" > < / a > < span class = "lineno" > 567< / span > < span class = "keywordflow" > if< / span > (current_decision_level_ == old_decision_level) {< / div >
< div class = "line" > < a id = "l00568" name = "l00568" > < / a > < span class = "lineno" > 568< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (!assumptions_.empty());< / div >
< div class = "line" > < a id = "l00569" name = "l00569" > < / a > < span class = "lineno" > 569< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00570" name = "l00570" > < / a > < span class = "lineno" > 570< / span > }< / div >
< div class = "line" > < a id = "l00571" name = "l00571" > < / a > < span class = "lineno" > 571< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00572" name = "l00572" > < / a > < span class = "lineno" > 572< / span > }< / div >
< div class = "line" > < a id = "l00573" name = "l00573" > < / a > < span class = "lineno" > 573< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00574" name = "l00574" > < / a > < span class = "lineno" > 574< / span > }< / div >
< div class = "line" > < a id = "l00575" name = "l00575" > < / a > < span class = "lineno" > 575< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (PropagationIsDone());< / div >
< div class = "line" > < a id = "l00576" name = "l00576" > < / a > < span class = "lineno" > 576< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00577" name = "l00577" > < / a > < span class = "lineno" > 577< / span > }< / div >
< div class = "line" > < a id = "l00578" name = "l00578" > < / a > < span class = "lineno" > 578< / span > < / div >
< div class = "line" > < a id = "l00579" name = "l00579" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9da38c8d2910442d551db5e360423029" > 579< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9da38c8d2910442d551db5e360423029" > SatSolver::ResetToLevelZero< / a > () {< / div >
< div class = "line" > < a id = "l00580" name = "l00580" > < / a > < span class = "lineno" > 580< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00581" name = "l00581" > < / a > < span class = "lineno" > 581< / span > assumption_level_ = 0;< / div >
< div class = "line" > < a id = "l00582" name = "l00582" > < / a > < span class = "lineno" > 582< / span > assumptions_.clear();< / div >
< div class = "line" > < a id = "l00583" name = "l00583" > < / a > < span class = "lineno" > 583< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (0);< / div >
< div class = "line" > < a id = "l00584" name = "l00584" > < / a > < span class = "lineno" > 584< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > FinishPropagation< / a > ();< / div >
< div class = "line" > < a id = "l00585" name = "l00585" > < / a > < span class = "lineno" > 585< / span > }< / div >
< div class = "line" > < a id = "l00586" name = "l00586" > < / a > < span class = "lineno" > 586< / span > < / div >
< div class = "line" > < a id = "l00587" name = "l00587" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad4494c6831942d344ed1d9758f0e6cd9" > 587< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad4494c6831942d344ed1d9758f0e6cd9" > SatSolver::ResetWithGivenAssumptions< / a > (< / div >
< div class = "line" > < a id = "l00588" name = "l00588" > < / a > < span class = "lineno" > 588< / span > < span class = "keyword" > const< / span > std::vector< Literal> & assumptions) {< / div >
< div class = "line" > < a id = "l00589" name = "l00589" > < / a > < span class = "lineno" > 589< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9da38c8d2910442d551db5e360423029" > ResetToLevelZero< / a > ()) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00590" name = "l00590" > < / a > < span class = "lineno" > 590< / span > < span class = "keywordflow" > if< / span > (assumptions.empty()) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00591" name = "l00591" > < / a > < span class = "lineno" > 591< / span > < / div >
< div class = "line" > < a id = "l00592" name = "l00592" > < / a > < span class = "lineno" > 592< / span > < span class = "comment" > // For assumptions and core-based search, it is really important to add as< / span > < / div >
< div class = "line" > < a id = "l00593" name = "l00593" > < / a > < span class = "lineno" > 593< / span > < span class = "comment" > // many binary clauses as possible. This is because we do not wan to miss any< / span > < / div >
< div class = "line" > < a id = "l00594" name = "l00594" > < / a > < span class = "lineno" > 594< / span > < span class = "comment" > // early core of size 2.< / span > < / div >
< div class = "line" > < a id = "l00595" name = "l00595" > < / a > < span class = "lineno" > 595< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2aafb0d6bd7d95f183e87866d0ade374" > ProcessNewlyFixedVariables< / a > ();< / div >
< div class = "line" > < a id = "l00596" name = "l00596" > < / a > < span class = "lineno" > 596< / span > < / div >
< div class = "line" > < a id = "l00597" name = "l00597" > < / a > < span class = "lineno" > 597< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (assumptions_.empty());< / div >
< div class = "line" > < a id = "l00598" name = "l00598" > < / a > < span class = "lineno" > 598< / span > assumption_level_ = 1;< / div >
< div class = "line" > < a id = "l00599" name = "l00599" > < / a > < span class = "lineno" > 599< / span > assumptions_ = assumptions;< / div >
< div class = "line" > < a id = "l00600" name = "l00600" > < / a > < span class = "lineno" > 600< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad28cbdd5735a0c111a642f39524d969e" > ReapplyAssumptionsIfNeeded< / a > ();< / div >
< div class = "line" > < a id = "l00601" name = "l00601" > < / a > < span class = "lineno" > 601< / span > }< / div >
< div class = "line" > < a id = "l00602" name = "l00602" > < / a > < span class = "lineno" > 602< / span > < / div >
< div class = "line" > < a id = "l00603" name = "l00603" > < / a > < span class = "lineno" > 603< / span > < span class = "comment" > // Note that we do not count these as " branches" for a reporting purpose.< / span > < / div >
< div class = "line" > < a id = "l00604" name = "l00604" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad28cbdd5735a0c111a642f39524d969e" > 604< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad28cbdd5735a0c111a642f39524d969e" > SatSolver::ReapplyAssumptionsIfNeeded< / a > () {< / div >
< div class = "line" > < a id = "l00605" name = "l00605" > < / a > < span class = "lineno" > 605< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00606" name = "l00606" > < / a > < span class = "lineno" > 606< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () > = assumption_level_) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00607" name = "l00607" > < / a > < span class = "lineno" > 607< / span > < / div >
< div class = "line" > < a id = "l00608" name = "l00608" > < / a > < span class = "lineno" > 608< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () == 0 & & !assumptions_.empty()) {< / div >
< div class = "line" > < a id = "l00609" name = "l00609" > < / a > < span class = "lineno" > 609< / span > < span class = "comment" > // When assumptions_ is not empty, the first " decision" actually contains< / span > < / div >
< div class = "line" > < a id = "l00610" name = "l00610" > < / a > < span class = "lineno" > 610< / span > < span class = "comment" > // multiple one, and we should never use its literal.< / span > < / div >
< div class = "line" > < a id = "l00611" name = "l00611" > < / a > < span class = "lineno" > 611< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (current_decision_level_, 0);< / div >
< div class = "line" > < a id = "l00612" name = "l00612" > < / a > < span class = "lineno" > 612< / span > last_decision_or_backtrack_trail_index_ = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l00613" name = "l00613" > < / a > < span class = "lineno" > 613< / span > decisions_[0] = < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_sat_solver_1_1_decision.html" > Decision< / a > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > (), < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > ());< / div >
< div class = "line" > < a id = "l00614" name = "l00614" > < / a > < span class = "lineno" > 614< / span > < / div >
< div class = "line" > < a id = "l00615" name = "l00615" > < / a > < span class = "lineno" > 615< / span > ++current_decision_level_;< / div >
< div class = "line" > < a id = "l00616" name = "l00616" > < / a > < span class = "lineno" > 616< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#adeeeb993a93b815c1c343f9c46ec3564" > SetDecisionLevel< / a > (current_decision_level_);< / div >
< div class = "line" > < a id = "l00617" name = "l00617" > < / a > < span class = "lineno" > 617< / span > < / div >
< div class = "line" > < a id = "l00618" name = "l00618" > < / a > < span class = "lineno" > 618< / span > < span class = "comment" > // We enqueue all assumptions at once at decision level 1.< / span > < / div >
< div class = "line" > < a id = "l00619" name = "l00619" > < / a > < span class = "lineno" > 619< / span > < span class = "keywordtype" > int< / span > num_decisions = 0;< / div >
< div class = "line" > < a id = "l00620" name = "l00620" > < / a > < span class = "lineno" > 620< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > lit : assumptions_) {< / div >
< div class = "line" > < a id = "l00621" name = "l00621" > < / a > < span class = "lineno" > 621< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsTrue(lit)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00622" name = "l00622" > < / a > < span class = "lineno" > 622< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsFalse(lit)) {< / div >
< div class = "line" > < a id = "l00623" name = "l00623" > < / a > < span class = "lineno" > 623< / span > < span class = "comment" > // See GetLastIncompatibleDecisions().< / span > < / div >
< div class = "line" > < a id = "l00624" name = "l00624" > < / a > < span class = "lineno" > 624< / span > *trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ab932e215c6dff3fe8f077d4d6a409c0c" > MutableConflict< / a > () = {lit.Negated(), lit};< / div >
< div class = "line" > < a id = "l00625" name = "l00625" > < / a > < span class = "lineno" > 625< / span > < span class = "keywordflow" > if< / span > (num_decisions == 0) {< / div >
< div class = "line" > < a id = "l00626" name = "l00626" > < / a > < span class = "lineno" > 626< / span > < span class = "comment" > // This is needed to avoid an empty level that cause some CHECK fail.< / span > < / div >
< div class = "line" > < a id = "l00627" name = "l00627" > < / a > < span class = "lineno" > 627< / span > current_decision_level_ = 0;< / div >
< div class = "line" > < a id = "l00628" name = "l00628" > < / a > < span class = "lineno" > 628< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#adeeeb993a93b815c1c343f9c46ec3564" > SetDecisionLevel< / a > (0);< / div >
< div class = "line" > < a id = "l00629" name = "l00629" > < / a > < span class = "lineno" > 629< / span > }< / div >
< div class = "line" > < a id = "l00630" name = "l00630" > < / a > < span class = "lineno" > 630< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00631" name = "l00631" > < / a > < span class = "lineno" > 631< / span > }< / div >
< div class = "line" > < a id = "l00632" name = "l00632" > < / a > < span class = "lineno" > 632< / span > ++num_decisions;< / div >
< div class = "line" > < a id = "l00633" name = "l00633" > < / a > < span class = "lineno" > 633< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#afc2d489cf3ae30c4b27ff1e4359e1be9" > EnqueueSearchDecision< / a > (lit);< / div >
< div class = "line" > < a id = "l00634" name = "l00634" > < / a > < span class = "lineno" > 634< / span > }< / div >
< div class = "line" > < a id = "l00635" name = "l00635" > < / a > < span class = "lineno" > 635< / span > < / div >
< div class = "line" > < a id = "l00636" name = "l00636" > < / a > < span class = "lineno" > 636< / span > < span class = "comment" > // Corner case: all assumptions are fixed at level zero, we ignore them.< / span > < / div >
< div class = "line" > < a id = "l00637" name = "l00637" > < / a > < span class = "lineno" > 637< / span > < span class = "keywordflow" > if< / span > (num_decisions == 0) {< / div >
< div class = "line" > < a id = "l00638" name = "l00638" > < / a > < span class = "lineno" > 638< / span > current_decision_level_ = 0;< / div >
< div class = "line" > < a id = "l00639" name = "l00639" > < / a > < span class = "lineno" > 639< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#adeeeb993a93b815c1c343f9c46ec3564" > SetDecisionLevel< / a > (0);< / div >
< div class = "line" > < a id = "l00640" name = "l00640" > < / a > < span class = "lineno" > 640< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9da38c8d2910442d551db5e360423029" > ResetToLevelZero< / a > ();< / div >
< div class = "line" > < a id = "l00641" name = "l00641" > < / a > < span class = "lineno" > 641< / span > }< / div >
< div class = "line" > < a id = "l00642" name = "l00642" > < / a > < span class = "lineno" > 642< / span > < / div >
< div class = "line" > < a id = "l00643" name = "l00643" > < / a > < span class = "lineno" > 643< / span > < span class = "comment" > // Now that everything is enqueued, we propagate.< / span > < / div >
< div class = "line" > < a id = "l00644" name = "l00644" > < / a > < span class = "lineno" > 644< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > FinishPropagation< / a > ();< / div >
< div class = "line" > < a id = "l00645" name = "l00645" > < / a > < span class = "lineno" > 645< / span > }< / div >
< div class = "line" > < a id = "l00646" name = "l00646" > < / a > < span class = "lineno" > 646< / span > < / div >
< div class = "line" > < a id = "l00647" name = "l00647" > < / a > < span class = "lineno" > 647< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (assumptions_.empty());< / div >
< div class = "line" > < a id = "l00648" name = "l00648" > < / a > < span class = "lineno" > 648< / span > < span class = "keywordtype" > int< / span > unused = 0;< / div >
< div class = "line" > < a id = "l00649" name = "l00649" > < / a > < span class = "lineno" > 649< / span > < span class = "keyword" > const< / span > int64_t old_num_branches = counters_.num_branches;< / div >
< div class = "line" > < a id = "l00650" name = "l00650" > < / a > < span class = "lineno" > 650< / span > < span class = "keyword" > const< / span > < a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > < a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > =< / div >
< div class = "line" > < a id = "l00651" name = "l00651" > < / a > < span class = "lineno" > 651< / span > ReapplyDecisionsUpTo(assumption_level_ - 1, & unused);< / div >
< div class = "line" > < a id = "l00652" name = "l00652" > < / a > < span class = "lineno" > 652< / span > counters_.num_branches = old_num_branches;< / div >
< div class = "line" > < a id = "l00653" name = "l00653" > < / a > < span class = "lineno" > 653< / span > assumption_level_ = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ();< / div >
< div class = "line" > < a id = "l00654" name = "l00654" > < / a > < span class = "lineno" > 654< / span > < span class = "keywordflow" > return< / span > (< a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > == < a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1" > SatSolver::FEASIBLE< / a > );< / div >
< div class = "line" > < a id = "l00655" name = "l00655" > < / a > < span class = "lineno" > 655< / span > }< / div >
< div class = "line" > < a id = "l00656" name = "l00656" > < / a > < span class = "lineno" > 656< / span > < / div >
< div class = "line" > < a id = "l00657" name = "l00657" > < / a > < span class = "lineno" > 657< / span > < span class = "keywordtype" > bool< / span > SatSolver::PropagateAndStopAfterOneConflictResolution() {< / div >
< div class = "line" > < a id = "l00658" name = "l00658" > < / a > < span class = "lineno" > 658< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00659" name = "l00659" > < / a > < span class = "lineno" > 659< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > Propagate< / a > ()) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00660" name = "l00660" > < / a > < span class = "lineno" > 660< / span > < / div >
< div class = "line" > < a id = "l00661" name = "l00661" > < / a > < span class = "lineno" > 661< / span > ++counters_.num_failures;< / div >
< div class = "line" > < a id = "l00662" name = "l00662" > < / a > < span class = "lineno" > 662< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > conflict_trail_index = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l00663" name = "l00663" > < / a > < span class = "lineno" > 663< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > conflict_decision_level = current_decision_level_;< / div >
< div class = "line" > < a id = "l00664" name = "l00664" > < / a > < span class = "lineno" > 664< / span > < / div >
< div class = "line" > < a id = "l00665" name = "l00665" > < / a > < span class = "lineno" > 665< / span > < span class = "comment" > // A conflict occurred, compute a nice reason for this failure.< / span > < / div >
< div class = "line" > < a id = "l00666" name = "l00666" > < / a > < span class = "lineno" > 666< / span > same_reason_identifier_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#aa71d36872f416feaa853788a7a7a7ef8" > Clear< / a > ();< / div >
< div class = "line" > < a id = "l00667" name = "l00667" > < / a > < span class = "lineno" > 667< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > max_trail_index = ComputeMaxTrailIndex(trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ace3ed18a3fa848ebbe2a2166e273e903" > FailingClause< / a > ());< / div >
< div class = "line" > < a id = "l00668" name = "l00668" > < / a > < span class = "lineno" > 668< / span > < span class = "keywordflow" > if< / span > (!assumptions_.empty() & & !trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ace3ed18a3fa848ebbe2a2166e273e903" > FailingClause< / a > ().empty()) {< / div >
< div class = "line" > < a id = "l00669" name = "l00669" > < / a > < span class = "lineno" > 669< / span > < span class = "comment" > // If the failing clause only contains literal at the assumptions level,< / span > < / div >
< div class = "line" > < a id = "l00670" name = "l00670" > < / a > < span class = "lineno" > 670< / span > < span class = "comment" > // we cannot use the ComputeFirstUIPConflict() code as we might have more< / span > < / div >
< div class = "line" > < a id = "l00671" name = "l00671" > < / a > < span class = "lineno" > 671< / span > < span class = "comment" > // than one decision.< / span > < / div >
< div class = "line" > < a id = "l00672" name = "l00672" > < / a > < span class = "lineno" > 672< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00673" name = "l00673" > < / a > < span class = "lineno" > 673< / span > < span class = "comment" > // TODO(user): We might still want to " learn" the clause, especially if< / span > < / div >
< div class = "line" > < a id = "l00674" name = "l00674" > < / a > < span class = "lineno" > 674< / span > < span class = "comment" > // it reduces to only one literal in which case we can just fix it.< / span > < / div >
< div class = "line" > < a id = "l00675" name = "l00675" > < / a > < span class = "lineno" > 675< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > highest_level =< / div >
< div class = "line" > < a id = "l00676" name = "l00676" > < / a > < span class = "lineno" > 676< / span > DecisionLevel((*trail_)[max_trail_index].Variable());< / div >
< div class = "line" > < a id = "l00677" name = "l00677" > < / a > < span class = "lineno" > 677< / span > < span class = "keywordflow" > if< / span > (highest_level == 1) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00678" name = "l00678" > < / a > < span class = "lineno" > 678< / span > }< / div >
< div class = "line" > < a id = "l00679" name = "l00679" > < / a > < span class = "lineno" > 679< / span > < / div >
< div class = "line" > < a id = "l00680" name = "l00680" > < / a > < span class = "lineno" > 680< / span > ComputeFirstUIPConflict(max_trail_index, & learned_conflict_,< / div >
< div class = "line" > < a id = "l00681" name = "l00681" > < / a > < span class = "lineno" > 681< / span > & reason_used_to_infer_the_conflict_,< / div >
< div class = "line" > < a id = "l00682" name = "l00682" > < / a > < span class = "lineno" > 682< / span > & subsumed_clauses_);< / div >
< div class = "line" > < a id = "l00683" name = "l00683" > < / a > < span class = "lineno" > 683< / span > < / div >
< div class = "line" > < a id = "l00684" name = "l00684" > < / a > < span class = "lineno" > 684< / span > < span class = "comment" > // An empty conflict means that the problem is UNSAT.< / span > < / div >
< div class = "line" > < a id = "l00685" name = "l00685" > < / a > < span class = "lineno" > 685< / span > < span class = "keywordflow" > if< / span > (learned_conflict_.empty()) < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00686" name = "l00686" > < / a > < span class = "lineno" > 686< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsConflictValid(learned_conflict_));< / div >
< div class = "line" > < a id = "l00687" name = "l00687" > < / a > < span class = "lineno" > 687< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (ClauseIsValidUnderDebugAssignment(learned_conflict_));< / div >
< div class = "line" > < a id = "l00688" name = "l00688" > < / a > < span class = "lineno" > 688< / span > < / div >
< div class = "line" > < a id = "l00689" name = "l00689" > < / a > < span class = "lineno" > 689< / span > < span class = "comment" > // Update the activity of all the variables in the first UIP clause.< / span > < / div >
< div class = "line" > < a id = "l00690" name = "l00690" > < / a > < span class = "lineno" > 690< / span > < span class = "comment" > // Also update the activity of the last level variables expanded (and< / span > < / div >
< div class = "line" > < a id = "l00691" name = "l00691" > < / a > < span class = "lineno" > 691< / span > < span class = "comment" > // thus discarded) during the first UIP computation. Note that both< / span > < / div >
< div class = "line" > < a id = "l00692" name = "l00692" > < / a > < span class = "lineno" > 692< / span > < span class = "comment" > // sets are disjoint.< / span > < / div >
< div class = "line" > < a id = "l00693" name = "l00693" > < / a > < span class = "lineno" > 693< / span > decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#aab615de1a3b2016b0a8b8cdf05e9cf0b" > BumpVariableActivities< / a > (learned_conflict_);< / div >
< div class = "line" > < a id = "l00694" name = "l00694" > < / a > < span class = "lineno" > 694< / span > decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#aab615de1a3b2016b0a8b8cdf05e9cf0b" > BumpVariableActivities< / a > (reason_used_to_infer_the_conflict_);< / div >
< div class = "line" > < a id = "l00695" name = "l00695" > < / a > < span class = "lineno" > 695< / span > < span class = "keywordflow" > if< / span > (parameters_-> also_bump_variables_in_conflict_reasons()) {< / div >
< div class = "line" > < a id = "l00696" name = "l00696" > < / a > < span class = "lineno" > 696< / span > ComputeUnionOfReasons(learned_conflict_, & extra_reason_literals_);< / div >
< div class = "line" > < a id = "l00697" name = "l00697" > < / a > < span class = "lineno" > 697< / span > decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#aab615de1a3b2016b0a8b8cdf05e9cf0b" > BumpVariableActivities< / a > (extra_reason_literals_);< / div >
< div class = "line" > < a id = "l00698" name = "l00698" > < / a > < span class = "lineno" > 698< / span > }< / div >
< div class = "line" > < a id = "l00699" name = "l00699" > < / a > < span class = "lineno" > 699< / span > < / div >
< div class = "line" > < a id = "l00700" name = "l00700" > < / a > < span class = "lineno" > 700< / span > < span class = "comment" > // Bump the clause activities.< / span > < / div >
< div class = "line" > < a id = "l00701" name = "l00701" > < / a > < span class = "lineno" > 701< / span > < span class = "comment" > // Note that the activity of the learned clause will be bumped too< / span > < / div >
< div class = "line" > < a id = "l00702" name = "l00702" > < / a > < span class = "lineno" > 702< / span > < span class = "comment" > // by AddLearnedClauseAndEnqueueUnitPropagation().< / span > < / div >
< div class = "line" > < a id = "l00703" name = "l00703" > < / a > < span class = "lineno" > 703< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a1b8fbc7c3c520e649cbfea284f58c9f7" > FailingSatClause< / a > () != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l00704" name = "l00704" > < / a > < span class = "lineno" > 704< / span > BumpClauseActivity(trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a1b8fbc7c3c520e649cbfea284f58c9f7" > FailingSatClause< / a > ());< / div >
< div class = "line" > < a id = "l00705" name = "l00705" > < / a > < span class = "lineno" > 705< / span > }< / div >
< div class = "line" > < a id = "l00706" name = "l00706" > < / a > < span class = "lineno" > 706< / span > BumpReasonActivities(reason_used_to_infer_the_conflict_);< / div >
< div class = "line" > < a id = "l00707" name = "l00707" > < / a > < span class = "lineno" > 707< / span > < / div >
< div class = "line" > < a id = "l00708" name = "l00708" > < / a > < span class = "lineno" > 708< / span > < span class = "comment" > // Decay the activities.< / span > < / div >
< div class = "line" > < a id = "l00709" name = "l00709" > < / a > < span class = "lineno" > 709< / span > decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#a8bc0829ef9f6099106cab480e71ab847" > UpdateVariableActivityIncrement< / a > ();< / div >
< div class = "line" > < a id = "l00710" name = "l00710" > < / a > < span class = "lineno" > 710< / span > UpdateClauseActivityIncrement();< / div >
< div class = "line" > < a id = "l00711" name = "l00711" > < / a > < span class = "lineno" > 711< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#ad064f7982ad8af720e437b82380b629f" > UpdateActivityIncrement< / a > ();< / div >
< div class = "line" > < a id = "l00712" name = "l00712" > < / a > < span class = "lineno" > 712< / span > < / div >
< div class = "line" > < a id = "l00713" name = "l00713" > < / a > < span class = "lineno" > 713< / span > < span class = "comment" > // Hack from Glucose that seems to perform well.< / span > < / div >
< div class = "line" > < a id = "l00714" name = "l00714" > < / a > < span class = "lineno" > 714< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > period = parameters_-> glucose_decay_increment_period();< / div >
< div class = "line" > < a id = "l00715" name = "l00715" > < / a > < span class = "lineno" > 715< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > max_decay = parameters_-> glucose_max_decay();< / div >
< div class = "line" > < a id = "l00716" name = "l00716" > < / a > < span class = "lineno" > 716< / span > < span class = "keywordflow" > if< / span > (counters_.num_failures % period == 0 & & < / div >
< div class = "line" > < a id = "l00717" name = "l00717" > < / a > < span class = "lineno" > 717< / span > parameters_-> variable_activity_decay() < max_decay) {< / div >
< div class = "line" > < a id = "l00718" name = "l00718" > < / a > < span class = "lineno" > 718< / span > parameters_-> set_variable_activity_decay(< / div >
< div class = "line" > < a id = "l00719" name = "l00719" > < / a > < span class = "lineno" > 719< / span > parameters_-> variable_activity_decay() +< / div >
< div class = "line" > < a id = "l00720" name = "l00720" > < / a > < span class = "lineno" > 720< / span > parameters_-> glucose_decay_increment());< / div >
< div class = "line" > < a id = "l00721" name = "l00721" > < / a > < span class = "lineno" > 721< / span > }< / div >
< div class = "line" > < a id = "l00722" name = "l00722" > < / a > < span class = "lineno" > 722< / span > < / div >
< div class = "line" > < a id = "l00723" name = "l00723" > < / a > < span class = "lineno" > 723< / span > < span class = "comment" > // PB resolution.< / span > < / div >
< div class = "line" > < a id = "l00724" name = "l00724" > < / a > < span class = "lineno" > 724< / span > < span class = "comment" > // There is no point using this if the conflict and all the reasons involved< / span > < / div >
< div class = "line" > < a id = "l00725" name = "l00725" > < / a > < span class = "lineno" > 725< / span > < span class = "comment" > // in its resolution were clauses.< / span > < / div >
< div class = "line" > < a id = "l00726" name = "l00726" > < / a > < span class = "lineno" > 726< / span > < span class = "keywordtype" > bool< / span > compute_pb_conflict = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00727" name = "l00727" > < / a > < span class = "lineno" > 727< / span > < span class = "keywordflow" > if< / span > (parameters_-> use_pb_resolution()) {< / div >
< div class = "line" > < a id = "l00728" name = "l00728" > < / a > < span class = "lineno" > 728< / span > compute_pb_conflict = (pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a677c33525fa9ddfc38520d99448e3950" > ConflictingConstraint< / a > () != < span class = "keyword" > nullptr< / span > );< / div >
< div class = "line" > < a id = "l00729" name = "l00729" > < / a > < span class = "lineno" > 729< / span > < span class = "keywordflow" > if< / span > (!compute_pb_conflict) {< / div >
< div class = "line" > < a id = "l00730" name = "l00730" > < / a > < span class = "lineno" > 730< / span > < span class = "keywordflow" > for< / span > (Literal lit : reason_used_to_infer_the_conflict_) {< / div >
< div class = "line" > < a id = "l00731" name = "l00731" > < / a > < span class = "lineno" > 731< / span > < span class = "keywordflow" > if< / span > (ReasonPbConstraintOrNull(lit.Variable()) != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l00732" name = "l00732" > < / a > < span class = "lineno" > 732< / span > compute_pb_conflict = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00733" name = "l00733" > < / a > < span class = "lineno" > 733< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00734" name = "l00734" > < / a > < span class = "lineno" > 734< / span > }< / div >
< div class = "line" > < a id = "l00735" name = "l00735" > < / a > < span class = "lineno" > 735< / span > }< / div >
< div class = "line" > < a id = "l00736" name = "l00736" > < / a > < span class = "lineno" > 736< / span > }< / div >
< div class = "line" > < a id = "l00737" name = "l00737" > < / a > < span class = "lineno" > 737< / span > }< / div >
< div class = "line" > < a id = "l00738" name = "l00738" > < / a > < span class = "lineno" > 738< / span > < / div >
< div class = "line" > < a id = "l00739" name = "l00739" > < / a > < span class = "lineno" > 739< / span > < span class = "comment" > // TODO(user): Note that we use the clause above to update the variable< / span > < / div >
< div class = "line" > < a id = "l00740" name = "l00740" > < / a > < span class = "lineno" > 740< / span > < span class = "comment" > // activities and not the pb conflict. Experiment.< / span > < / div >
< div class = "line" > < a id = "l00741" name = "l00741" > < / a > < span class = "lineno" > 741< / span > < span class = "keywordflow" > if< / span > (compute_pb_conflict) {< / div >
< div class = "line" > < a id = "l00742" name = "l00742" > < / a > < span class = "lineno" > 742< / span > pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#ac85244c6eaf57970b2057657ae70ee17" > ClearAndResize< / a > (num_variables_.value());< / div >
< div class = "line" > < a id = "l00743" name = "l00743" > < / a > < span class = "lineno" > 743< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > initial_slack(-1);< / div >
< div class = "line" > < a id = "l00744" name = "l00744" > < / a > < span class = "lineno" > 744< / span > < span class = "keywordflow" > if< / span > (pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a677c33525fa9ddfc38520d99448e3950" > ConflictingConstraint< / a > () == < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l00745" name = "l00745" > < / a > < span class = "lineno" > 745< / span > < span class = "comment" > // Generic clause case.< / span > < / div >
< div class = "line" > < a id = "l00746" name = "l00746" > < / a > < span class = "lineno" > 746< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > num_literals(0);< / div >
< div class = "line" > < a id = "l00747" name = "l00747" > < / a > < span class = "lineno" > 747< / span > < span class = "keywordflow" > for< / span > (Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ace3ed18a3fa848ebbe2a2166e273e903" > FailingClause< / a > ()) {< / div >
< div class = "line" > < a id = "l00748" name = "l00748" > < / a > < span class = "lineno" > 748< / span > pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#aaff50cb53673c51920c6bcb567ca8806" > AddTerm< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Negated(), < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > (1.0));< / div >
< div class = "line" > < a id = "l00749" name = "l00749" > < / a > < span class = "lineno" > 749< / span > ++num_literals;< / div >
< div class = "line" > < a id = "l00750" name = "l00750" > < / a > < span class = "lineno" > 750< / span > }< / div >
< div class = "line" > < a id = "l00751" name = "l00751" > < / a > < span class = "lineno" > 751< / span > pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#ac4fb16d0641ccef0502adb8bbe3909af" > AddToRhs< / a > (num_literals - 1);< / div >
< div class = "line" > < a id = "l00752" name = "l00752" > < / a > < span class = "lineno" > 752< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00753" name = "l00753" > < / a > < span class = "lineno" > 753< / span > < span class = "comment" > // We have a pseudo-Boolean conflict, so we start from there.< / span > < / div >
< div class = "line" > < a id = "l00754" name = "l00754" > < / a > < span class = "lineno" > 754< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a677c33525fa9ddfc38520d99448e3950" > ConflictingConstraint< / a > ()-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_upper_bounded_linear_constraint.html#a79bc25526bc335587dd8b8c433d19306" > AddToConflict< / a > (& pb_conflict_);< / div >
< div class = "line" > < a id = "l00755" name = "l00755" > < / a > < span class = "lineno" > 755< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a5116e268e9144cf6ee197450e0eda486" > ClearConflictingConstraint< / a > ();< / div >
< div class = "line" > < a id = "l00756" name = "l00756" > < / a > < span class = "lineno" > 756< / span > initial_slack =< / div >
< div class = "line" > < a id = "l00757" name = "l00757" > < / a > < span class = "lineno" > 757< / span > pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#a3061094c37b507ae2834cb7d86fbcf39" > ComputeSlackForTrailPrefix< / a > (*trail_, max_trail_index + 1);< / div >
< div class = "line" > < a id = "l00758" name = "l00758" > < / a > < span class = "lineno" > 758< / span > }< / div >
< div class = "line" > < a id = "l00759" name = "l00759" > < / a > < span class = "lineno" > 759< / span > < / div >
< div class = "line" > < a id = "l00760" name = "l00760" > < / a > < span class = "lineno" > 760< / span > < span class = "keywordtype" > int< / span > pb_backjump_level;< / div >
< div class = "line" > < a id = "l00761" name = "l00761" > < / a > < span class = "lineno" > 761< / span > ComputePBConflict(max_trail_index, initial_slack, & pb_conflict_,< / div >
< div class = "line" > < a id = "l00762" name = "l00762" > < / a > < span class = "lineno" > 762< / span > & pb_backjump_level);< / div >
< div class = "line" > < a id = "l00763" name = "l00763" > < / a > < span class = "lineno" > 763< / span > < span class = "keywordflow" > if< / span > (pb_backjump_level == -1) < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l00764" name = "l00764" > < / a > < span class = "lineno" > 764< / span > < / div >
< div class = "line" > < a id = "l00765" name = "l00765" > < / a > < span class = "lineno" > 765< / span > < span class = "comment" > // Convert the conflict into the vector< LiteralWithCoeff> form.< / span > < / div >
< div class = "line" > < a id = "l00766" name = "l00766" > < / a > < span class = "lineno" > 766< / span > std::vector< LiteralWithCoeff> cst;< / div >
< div class = "line" > < a id = "l00767" name = "l00767" > < / a > < span class = "lineno" > 767< / span > pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#ad49fd13bba7789f08d81d6c71d856082" > CopyIntoVector< / a > (& cst);< / div >
< div class = "line" > < a id = "l00768" name = "l00768" > < / a > < span class = "lineno" > 768< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (PBConstraintIsValidUnderDebugAssignment(cst, pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#a4556e82417879ecf2bf14a4ee7bfce9e" > Rhs< / a > ()));< / div >
< div class = "line" > < a id = "l00769" name = "l00769" > < / a > < span class = "lineno" > 769< / span > < / div >
< div class = "line" > < a id = "l00770" name = "l00770" > < / a > < span class = "lineno" > 770< / span > < span class = "comment" > // Check if the learned PB conflict is just a clause:< / span > < / div >
< div class = "line" > < a id = "l00771" name = "l00771" > < / a > < span class = "lineno" > 771< / span > < span class = "comment" > // all its coefficient must be 1, and the rhs must be its size minus 1.< / span > < / div >
< div class = "line" > < a id = "l00772" name = "l00772" > < / a > < span class = "lineno" > 772< / span > < span class = "keywordtype" > bool< / span > conflict_is_a_clause = (pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#a4556e82417879ecf2bf14a4ee7bfce9e" > Rhs< / a > () == cst.size() - 1);< / div >
< div class = "line" > < a id = "l00773" name = "l00773" > < / a > < span class = "lineno" > 773< / span > < span class = "keywordflow" > if< / span > (conflict_is_a_clause) {< / div >
< div class = "line" > < a id = "l00774" name = "l00774" > < / a > < span class = "lineno" > 774< / span > < span class = "keywordflow" > for< / span > (LiteralWithCoeff term : cst) {< / div >
< div class = "line" > < a id = "l00775" name = "l00775" > < / a > < span class = "lineno" > 775< / span > < span class = "keywordflow" > if< / span > (term.coefficient != < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > (1)) {< / div >
< div class = "line" > < a id = "l00776" name = "l00776" > < / a > < span class = "lineno" > 776< / span > conflict_is_a_clause = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00777" name = "l00777" > < / a > < span class = "lineno" > 777< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00778" name = "l00778" > < / a > < span class = "lineno" > 778< / span > }< / div >
< div class = "line" > < a id = "l00779" name = "l00779" > < / a > < span class = "lineno" > 779< / span > }< / div >
< div class = "line" > < a id = "l00780" name = "l00780" > < / a > < span class = "lineno" > 780< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00781" name = "l00781" > < / a > < span class = "lineno" > 781< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00782" name = "l00782" > < / a > < span class = "lineno" > 782< / span > < span class = "keywordflow" > if< / span > (!conflict_is_a_clause) {< / div >
< div class = "line" > < a id = "l00783" name = "l00783" > < / a > < span class = "lineno" > 783< / span > < span class = "comment" > // Use the PB conflict.< / span > < / div >
< div class = "line" > < a id = "l00784" name = "l00784" > < / a > < span class = "lineno" > 784< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a" > DCHECK_GT< / a > (pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a18ab319435ed80315e0c35ca40a7c2a0" > NumberOfConstraints< / a > (), 0);< / div >
< div class = "line" > < a id = "l00785" name = "l00785" > < / a > < span class = "lineno" > 785< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82" > CHECK_LT< / a > (pb_backjump_level, < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ());< / div >
< div class = "line" > < a id = "l00786" name = "l00786" > < / a > < span class = "lineno" > 786< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (pb_backjump_level);< / div >
< div class = "line" > < a id = "l00787" name = "l00787" > < / a > < span class = "lineno" > 787< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#afea0121eba5886052ba91716acf7f29f" > AddLearnedConstraint< / a > (cst, pb_conflict_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#a4556e82417879ecf2bf14a4ee7bfce9e" > Rhs< / a > (),< / div >
< div class = "line" > < a id = "l00788" name = "l00788" > < / a > < span class = "lineno" > 788< / span > trail_));< / div >
< div class = "line" > < a id = "l00789" name = "l00789" > < / a > < span class = "lineno" > 789< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6" > CHECK_GT< / a > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > (), last_decision_or_backtrack_trail_index_);< / div >
< div class = "line" > < a id = "l00790" name = "l00790" > < / a > < span class = "lineno" > 790< / span > counters_.num_learned_pb_literals += cst.size();< / div >
< div class = "line" > < a id = "l00791" name = "l00791" > < / a > < span class = "lineno" > 791< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00792" name = "l00792" > < / a > < span class = "lineno" > 792< / span > }< / div >
< div class = "line" > < a id = "l00793" name = "l00793" > < / a > < span class = "lineno" > 793< / span > < / div >
< div class = "line" > < a id = "l00794" name = "l00794" > < / a > < span class = "lineno" > 794< / span > < span class = "comment" > // Continue with the normal clause flow, but use the PB conflict clause< / span > < / div >
< div class = "line" > < a id = "l00795" name = "l00795" > < / a > < span class = "lineno" > 795< / span > < span class = "comment" > // if it has a lower backjump level.< / span > < / div >
< div class = "line" > < a id = "l00796" name = "l00796" > < / a > < span class = "lineno" > 796< / span > < span class = "keywordflow" > if< / span > (pb_backjump_level < ComputeBacktrackLevel(learned_conflict_)) {< / div >
< div class = "line" > < a id = "l00797" name = "l00797" > < / a > < span class = "lineno" > 797< / span > subsumed_clauses_.clear(); < span class = "comment" > // Because the conflict changes.< / span > < / div >
< div class = "line" > < a id = "l00798" name = "l00798" > < / a > < span class = "lineno" > 798< / span > learned_conflict_.clear();< / div >
< div class = "line" > < a id = "l00799" name = "l00799" > < / a > < span class = "lineno" > 799< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > ClearAndResize< / a > (num_variables_);< / div >
< div class = "line" > < a id = "l00800" name = "l00800" > < / a > < span class = "lineno" > 800< / span > < span class = "keywordtype" > int< / span > max_level = 0;< / div >
< div class = "line" > < a id = "l00801" name = "l00801" > < / a > < span class = "lineno" > 801< / span > < span class = "keywordtype" > int< / span > max_index = 0;< / div >
< div class = "line" > < a id = "l00802" name = "l00802" > < / a > < span class = "lineno" > 802< / span > < span class = "keywordflow" > for< / span > (LiteralWithCoeff term : cst) {< / div >
< div class = "line" > < a id = "l00803" name = "l00803" > < / a > < span class = "lineno" > 803< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsTrue(term.literal));< / div >
< div class = "line" > < a id = "l00804" name = "l00804" > < / a > < span class = "lineno" > 804< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (term.coefficient, 1);< / div >
< div class = "line" > < a id = "l00805" name = "l00805" > < / a > < span class = "lineno" > 805< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (term.literal.Variable()).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a6a330c3b2adf87bfa27e9a9450d8bc40" > level< / a > ;< / div >
< div class = "line" > < a id = "l00806" name = "l00806" > < / a > < span class = "lineno" > 806< / span > < span class = "keywordflow" > if< / span > (level == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00807" name = "l00807" > < / a > < span class = "lineno" > 807< / span > < span class = "keywordflow" > if< / span > (level > max_level) {< / div >
< div class = "line" > < a id = "l00808" name = "l00808" > < / a > < span class = "lineno" > 808< / span > max_level = level;< / div >
< div class = "line" > < a id = "l00809" name = "l00809" > < / a > < span class = "lineno" > 809< / span > max_index = learned_conflict_.size();< / div >
< div class = "line" > < a id = "l00810" name = "l00810" > < / a > < span class = "lineno" > 810< / span > }< / div >
< div class = "line" > < a id = "l00811" name = "l00811" > < / a > < span class = "lineno" > 811< / span > learned_conflict_.push_back(term.literal.Negated());< / div >
< div class = "line" > < a id = "l00812" name = "l00812" > < / a > < span class = "lineno" > 812< / span > < / div >
< div class = "line" > < a id = "l00813" name = "l00813" > < / a > < span class = "lineno" > 813< / span > < span class = "comment" > // The minimization functions below expect the conflict to be marked!< / span > < / div >
< div class = "line" > < a id = "l00814" name = "l00814" > < / a > < span class = "lineno" > 814< / span > < span class = "comment" > // TODO(user): This is error prone, find a better way?< / span > < / div >
< div class = "line" > < a id = "l00815" name = "l00815" > < / a > < span class = "lineno" > 815< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (term.literal.Variable());< / div >
< div class = "line" > < a id = "l00816" name = "l00816" > < / a > < span class = "lineno" > 816< / span > }< / div >
< div class = "line" > < a id = "l00817" name = "l00817" > < / a > < span class = "lineno" > 817< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (!learned_conflict_.empty());< / div >
< div class = "line" > < a id = "l00818" name = "l00818" > < / a > < span class = "lineno" > 818< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2" > std::swap< / a > (learned_conflict_.front(), learned_conflict_[max_index]);< / div >
< div class = "line" > < a id = "l00819" name = "l00819" > < / a > < span class = "lineno" > 819< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsConflictValid(learned_conflict_));< / div >
< div class = "line" > < a id = "l00820" name = "l00820" > < / a > < span class = "lineno" > 820< / span > }< / div >
< div class = "line" > < a id = "l00821" name = "l00821" > < / a > < span class = "lineno" > 821< / span > }< / div >
< div class = "line" > < a id = "l00822" name = "l00822" > < / a > < span class = "lineno" > 822< / span > < / div >
< div class = "line" > < a id = "l00823" name = "l00823" > < / a > < span class = "lineno" > 823< / span > < span class = "comment" > // Minimizing the conflict with binary clauses first has two advantages.< / span > < / div >
< div class = "line" > < a id = "l00824" name = "l00824" > < / a > < span class = "lineno" > 824< / span > < span class = "comment" > // First, there is no need to compute a reason for the variables eliminated< / span > < / div >
< div class = "line" > < a id = "l00825" name = "l00825" > < / a > < span class = "lineno" > 825< / span > < span class = "comment" > // this way. Second, more variables may be marked (in is_marked_) and< / span > < / div >
< div class = "line" > < a id = "l00826" name = "l00826" > < / a > < span class = "lineno" > 826< / span > < span class = "comment" > // MinimizeConflict() can take advantage of that. Because of this, the< / span > < / div >
< div class = "line" > < a id = "l00827" name = "l00827" > < / a > < span class = "lineno" > 827< / span > < span class = "comment" > // LBD of the learned conflict can change.< / span > < / div >
< div class = "line" > < a id = "l00828" name = "l00828" > < / a > < span class = "lineno" > 828< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (ClauseIsValidUnderDebugAssignment(learned_conflict_));< / div >
< div class = "line" > < a id = "l00829" name = "l00829" > < / a > < span class = "lineno" > 829< / span > < span class = "keywordflow" > if< / span > (!binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ac8d9ce1fd42b34561f508c578f61e4ef" > IsEmpty< / a > ()) {< / div >
< div class = "line" > < a id = "l00830" name = "l00830" > < / a > < span class = "lineno" > 830< / span > < span class = "keywordflow" > if< / span > (parameters_-> binary_minimization_algorithm() ==< / div >
< div class = "line" > < a id = "l00831" name = "l00831" > < / a > < span class = "lineno" > 831< / span > SatParameters::BINARY_MINIMIZATION_FIRST) {< / div >
< div class = "line" > < a id = "l00832" name = "l00832" > < / a > < span class = "lineno" > 832< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a95cb5284ae22d2cbca6cd69a275d8a98" > MinimizeConflictFirst< / a > (< / div >
< div class = "line" > < a id = "l00833" name = "l00833" > < / a > < span class = "lineno" > 833< / span > *trail_, & learned_conflict_, & is_marked_);< / div >
< div class = "line" > < a id = "l00834" name = "l00834" > < / a > < span class = "lineno" > 834< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (parameters_-> binary_minimization_algorithm() ==< / div >
< div class = "line" > < a id = "l00835" name = "l00835" > < / a > < span class = "lineno" > 835< / span > SatParameters::< / div >
< div class = "line" > < a id = "l00836" name = "l00836" > < / a > < span class = "lineno" > 836< / span > BINARY_MINIMIZATION_FIRST_WITH_TRANSITIVE_REDUCTION) {< / div >
< div class = "line" > < a id = "l00837" name = "l00837" > < / a > < span class = "lineno" > 837< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6cbb84e00be8d376ad8bf7d0e333a46a" > MinimizeConflictFirstWithTransitiveReduction< / a > (< / div >
< div class = "line" > < a id = "l00838" name = "l00838" > < / a > < span class = "lineno" > 838< / span > *trail_, & learned_conflict_, & is_marked_,< / div >
< div class = "line" > < a id = "l00839" name = "l00839" > < / a > < span class = "lineno" > 839< / span > *model_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_model.html#afb0c03e2a6201677c266f8a7eb77c2dc" > GetOrCreate< / a > < ModelRandomGenerator> ());< / div >
< div class = "line" > < a id = "l00840" name = "l00840" > < / a > < span class = "lineno" > 840< / span > }< / div >
< div class = "line" > < a id = "l00841" name = "l00841" > < / a > < span class = "lineno" > 841< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsConflictValid(learned_conflict_));< / div >
< div class = "line" > < a id = "l00842" name = "l00842" > < / a > < span class = "lineno" > 842< / span > }< / div >
< div class = "line" > < a id = "l00843" name = "l00843" > < / a > < span class = "lineno" > 843< / span > < / div >
< div class = "line" > < a id = "l00844" name = "l00844" > < / a > < span class = "lineno" > 844< / span > < span class = "comment" > // Minimize the learned conflict.< / span > < / div >
< div class = "line" > < a id = "l00845" name = "l00845" > < / a > < span class = "lineno" > 845< / span > MinimizeConflict(& learned_conflict_, & reason_used_to_infer_the_conflict_);< / div >
< div class = "line" > < a id = "l00846" name = "l00846" > < / a > < span class = "lineno" > 846< / span > < / div >
< div class = "line" > < a id = "l00847" name = "l00847" > < / a > < span class = "lineno" > 847< / span > < span class = "comment" > // Minimize it further with binary clauses?< / span > < / div >
< div class = "line" > < a id = "l00848" name = "l00848" > < / a > < span class = "lineno" > 848< / span > < span class = "keywordflow" > if< / span > (!binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ac8d9ce1fd42b34561f508c578f61e4ef" > IsEmpty< / a > ()) {< / div >
< div class = "line" > < a id = "l00849" name = "l00849" > < / a > < span class = "lineno" > 849< / span > < span class = "comment" > // Note that on the contrary to the MinimizeConflict() above that< / span > < / div >
< div class = "line" > < a id = "l00850" name = "l00850" > < / a > < span class = "lineno" > 850< / span > < span class = "comment" > // just uses the reason graph, this minimization can change the< / span > < / div >
< div class = "line" > < a id = "l00851" name = "l00851" > < / a > < span class = "lineno" > 851< / span > < span class = "comment" > // clause LBD and even the backtracking level.< / span > < / div >
< div class = "line" > < a id = "l00852" name = "l00852" > < / a > < span class = "lineno" > 852< / span > < span class = "keywordflow" > switch< / span > (parameters_-> binary_minimization_algorithm()) {< / div >
< div class = "line" > < a id = "l00853" name = "l00853" > < / a > < span class = "lineno" > 853< / span > < span class = "keywordflow" > case< / span > SatParameters::NO_BINARY_MINIMIZATION:< / div >
< div class = "line" > < a id = "l00854" name = "l00854" > < / a > < span class = "lineno" > 854< / span > ABSL_FALLTHROUGH_INTENDED;< / div >
< div class = "line" > < a id = "l00855" name = "l00855" > < / a > < span class = "lineno" > 855< / span > < span class = "keywordflow" > case< / span > SatParameters::BINARY_MINIMIZATION_FIRST:< / div >
< div class = "line" > < a id = "l00856" name = "l00856" > < / a > < span class = "lineno" > 856< / span > ABSL_FALLTHROUGH_INTENDED;< / div >
< div class = "line" > < a id = "l00857" name = "l00857" > < / a > < span class = "lineno" > 857< / span > < span class = "keywordflow" > case< / span > SatParameters::BINARY_MINIMIZATION_FIRST_WITH_TRANSITIVE_REDUCTION:< / div >
< div class = "line" > < a id = "l00858" name = "l00858" > < / a > < span class = "lineno" > 858< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00859" name = "l00859" > < / a > < span class = "lineno" > 859< / span > < span class = "keywordflow" > case< / span > SatParameters::BINARY_MINIMIZATION_WITH_REACHABILITY:< / div >
< div class = "line" > < a id = "l00860" name = "l00860" > < / a > < span class = "lineno" > 860< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a311c7dc55d8a10542d54dfeabca48450" > MinimizeConflictWithReachability< / a > (< / div >
< div class = "line" > < a id = "l00861" name = "l00861" > < / a > < span class = "lineno" > 861< / span > & learned_conflict_);< / div >
< div class = "line" > < a id = "l00862" name = "l00862" > < / a > < span class = "lineno" > 862< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00863" name = "l00863" > < / a > < span class = "lineno" > 863< / span > < span class = "keywordflow" > case< / span > SatParameters::EXPERIMENTAL_BINARY_MINIMIZATION:< / div >
< div class = "line" > < a id = "l00864" name = "l00864" > < / a > < span class = "lineno" > 864< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#af30fd0373e896f83bb84d2295a310492" > MinimizeConflictExperimental< / a > (< / div >
< div class = "line" > < a id = "l00865" name = "l00865" > < / a > < span class = "lineno" > 865< / span > *trail_, & learned_conflict_);< / div >
< div class = "line" > < a id = "l00866" name = "l00866" > < / a > < span class = "lineno" > 866< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00867" name = "l00867" > < / a > < span class = "lineno" > 867< / span > }< / div >
< div class = "line" > < a id = "l00868" name = "l00868" > < / a > < span class = "lineno" > 868< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (IsConflictValid(learned_conflict_));< / div >
< div class = "line" > < a id = "l00869" name = "l00869" > < / a > < span class = "lineno" > 869< / span > }< / div >
< div class = "line" > < a id = "l00870" name = "l00870" > < / a > < span class = "lineno" > 870< / span > < / div >
< div class = "line" > < a id = "l00871" name = "l00871" > < / a > < span class = "lineno" > 871< / span > < span class = "comment" > // We notify the decision before backtracking so that we can save the phase.< / span > < / div >
< div class = "line" > < a id = "l00872" name = "l00872" > < / a > < span class = "lineno" > 872< / span > < span class = "comment" > // The current heuristic is to try to take a trail prefix for which there is< / span > < / div >
< div class = "line" > < a id = "l00873" name = "l00873" > < / a > < span class = "lineno" > 873< / span > < span class = "comment" > // currently no conflict (hence just before the last decision was taken).< / span > < / div >
< div class = "line" > < a id = "l00874" name = "l00874" > < / a > < span class = "lineno" > 874< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00875" name = "l00875" > < / a > < span class = "lineno" > 875< / span > < span class = "comment" > // TODO(user): It is unclear what the best heuristic is here. Both the current< / span > < / div >
< div class = "line" > < a id = "l00876" name = "l00876" > < / a > < span class = "lineno" > 876< / span > < span class = "comment" > // trail index or the trail before the current decision perform well, but< / span > < / div >
< div class = "line" > < a id = "l00877" name = "l00877" > < / a > < span class = "lineno" > 877< / span > < span class = "comment" > // using the full trail seems slightly better even though it will contain the< / span > < / div >
< div class = "line" > < a id = "l00878" name = "l00878" > < / a > < span class = "lineno" > 878< / span > < span class = "comment" > // current conflicting literal.< / span > < / div >
< div class = "line" > < a id = "l00879" name = "l00879" > < / a > < span class = "lineno" > 879< / span > decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#abe906f3b347e87b5e91e7ab5609b0f36" > BeforeConflict< / a > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ());< / div >
< div class = "line" > < a id = "l00880" name = "l00880" > < / a > < span class = "lineno" > 880< / span > < / div >
< div class = "line" > < a id = "l00881" name = "l00881" > < / a > < span class = "lineno" > 881< / span > < span class = "comment" > // Backtrack and add the reason to the set of learned clause.< / span > < / div >
< div class = "line" > < a id = "l00882" name = "l00882" > < / a > < span class = "lineno" > 882< / span > counters_.num_literals_learned += learned_conflict_.size();< / div >
< div class = "line" > < a id = "l00883" name = "l00883" > < / a > < span class = "lineno" > 883< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (ComputeBacktrackLevel(learned_conflict_));< / div >
< div class = "line" > < a id = "l00884" name = "l00884" > < / a > < span class = "lineno" > 884< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (ClauseIsValidUnderDebugAssignment(learned_conflict_));< / div >
< div class = "line" > < a id = "l00885" name = "l00885" > < / a > < span class = "lineno" > 885< / span > < / div >
< div class = "line" > < a id = "l00886" name = "l00886" > < / a > < span class = "lineno" > 886< / span > < span class = "comment" > // Note that we need to output the learned clause before cleaning the clause< / span > < / div >
< div class = "line" > < a id = "l00887" name = "l00887" > < / a > < span class = "lineno" > 887< / span > < span class = "comment" > // database. This is because we already backtracked and some of the clauses< / span > < / div >
< div class = "line" > < a id = "l00888" name = "l00888" > < / a > < span class = "lineno" > 888< / span > < span class = "comment" > // that were needed to infer the conflict may not be " reasons" anymore and< / span > < / div >
< div class = "line" > < a id = "l00889" name = "l00889" > < / a > < span class = "lineno" > 889< / span > < span class = "comment" > // may be deleted.< / span > < / div >
< div class = "line" > < a id = "l00890" name = "l00890" > < / a > < span class = "lineno" > 890< / span > < span class = "keywordflow" > if< / span > (drat_proof_handler_ != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l00891" name = "l00891" > < / a > < span class = "lineno" > 891< / span > drat_proof_handler_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a98bacf41c50979896b4a5f5e41fb0ccf" > AddClause< / a > (learned_conflict_);< / div >
< div class = "line" > < a id = "l00892" name = "l00892" > < / a > < span class = "lineno" > 892< / span > }< / div >
< div class = "line" > < a id = "l00893" name = "l00893" > < / a > < span class = "lineno" > 893< / span > < / div >
< div class = "line" > < a id = "l00894" name = "l00894" > < / a > < span class = "lineno" > 894< / span > < span class = "comment" > // Detach any subsumed clause. They will actually be deleted on the next< / span > < / div >
< div class = "line" > < a id = "l00895" name = "l00895" > < / a > < span class = "lineno" > 895< / span > < span class = "comment" > // clause cleanup phase.< / span > < / div >
< div class = "line" > < a id = "l00896" name = "l00896" > < / a > < span class = "lineno" > 896< / span > < span class = "keywordtype" > bool< / span > is_redundant = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00897" name = "l00897" > < / a > < span class = "lineno" > 897< / span > < span class = "keywordflow" > if< / span > (!subsumed_clauses_.empty() & & < / div >
< div class = "line" > < a id = "l00898" name = "l00898" > < / a > < span class = "lineno" > 898< / span > parameters_-> subsumption_during_conflict_analysis()) {< / div >
< div class = "line" > < a id = "l00899" name = "l00899" > < / a > < span class = "lineno" > 899< / span > < span class = "keywordflow" > for< / span > (SatClause* clause : subsumed_clauses_) {< / div >
< div class = "line" > < a id = "l00900" name = "l00900" > < / a > < span class = "lineno" > 900< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (ClauseSubsumption(learned_conflict_, clause));< / div >
< div class = "line" > < a id = "l00901" name = "l00901" > < / a > < span class = "lineno" > 901< / span > < span class = "keywordflow" > if< / span > (!clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab054db78fc1b1e1681d2fc4e9fd1ca45" > IsRemovable< / a > (clause)) {< / div >
< div class = "line" > < a id = "l00902" name = "l00902" > < / a > < span class = "lineno" > 902< / span > is_redundant = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00903" name = "l00903" > < / a > < span class = "lineno" > 903< / span > }< / div >
< div class = "line" > < a id = "l00904" name = "l00904" > < / a > < span class = "lineno" > 904< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab6bd51395bef8b42ac66ad9b52635084" > LazyDetach< / a > (clause);< / div >
< div class = "line" > < a id = "l00905" name = "l00905" > < / a > < span class = "lineno" > 905< / span > }< / div >
< div class = "line" > < a id = "l00906" name = "l00906" > < / a > < span class = "lineno" > 906< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ae57f3c4e72eb63a34fa09e707a18e6d3" > CleanUpWatchers< / a > ();< / div >
< div class = "line" > < a id = "l00907" name = "l00907" > < / a > < span class = "lineno" > 907< / span > counters_.num_subsumed_clauses += subsumed_clauses_.size();< / div >
< div class = "line" > < a id = "l00908" name = "l00908" > < / a > < span class = "lineno" > 908< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00909" name = "l00909" > < / a > < span class = "lineno" > 909< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00910" name = "l00910" > < / a > < span class = "lineno" > 910< / span > < span class = "comment" > // Create and attach the new learned clause.< / span > < / div >
< div class = "line" > < a id = "l00911" name = "l00911" > < / a > < span class = "lineno" > 911< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > conflict_lbd = AddLearnedClauseAndEnqueueUnitPropagation(< / div >
< div class = "line" > < a id = "l00912" name = "l00912" > < / a > < span class = "lineno" > 912< / span > learned_conflict_, is_redundant);< / div >
< div class = "line" > < a id = "l00913" name = "l00913" > < / a > < span class = "lineno" > 913< / span > restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#a6656a848070cf8e91a9af92feee0477c" > OnConflict< / a > (conflict_trail_index, conflict_decision_level,< / div >
< div class = "line" > < a id = "l00914" name = "l00914" > < / a > < span class = "lineno" > 914< / span > conflict_lbd);< / div >
< div class = "line" > < a id = "l00915" name = "l00915" > < / a > < span class = "lineno" > 915< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00916" name = "l00916" > < / a > < span class = "lineno" > 916< / span > }< / div >
< div class = "line" > < a id = "l00917" name = "l00917" > < / a > < span class = "lineno" > 917< / span > < / div >
< div class = "line" > < a id = "l00918" name = "l00918" > < / a > < span class = "lineno" > 918< / span > < a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > SatSolver::ReapplyDecisionsUpTo(< / div >
< div class = "line" > < a id = "l00919" name = "l00919" > < / a > < span class = "lineno" > 919< / span > < span class = "keywordtype" > int< / span > max_level, < span class = "keywordtype" > int< / span > * first_propagation_index) {< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00920" name = "l00920" > < / a > < span class = "lineno" > 920< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00921" name = "l00921" > < / a > < span class = "lineno" > 921< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (assumptions_.empty());< / div >
< div class = "line" > < a id = "l00922" name = "l00922" > < / a > < span class = "lineno" > 922< / span > < span class = "keywordtype" > int< / span > decision_index = current_decision_level_;< / div >
< div class = "line" > < a id = "l00923" name = "l00923" > < / a > < span class = "lineno" > 923< / span > < span class = "keywordflow" > while< / span > (decision_index < = max_level) {< / div >
< div class = "line" > < a id = "l00924" name = "l00924" > < / a > < span class = "lineno" > 924< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (decision_index, current_decision_level_);< / div >
< div class = "line" > < a id = "l00925" name = "l00925" > < / a > < span class = "lineno" > 925< / span > < span class = "keyword" > const< / span > Literal previous_decision = decisions_[decision_index].literal;< / div >
< div class = "line" > < a id = "l00926" name = "l00926" > < / a > < span class = "lineno" > 926< / span > ++decision_index;< / div >
< div class = "line" > < a id = "l00927" name = "l00927" > < / a > < span class = "lineno" > 927< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsTrue(previous_decision)) {< / div >
< div class = "line" > < a id = "l00928" name = "l00928" > < / a > < span class = "lineno" > 928< / span > < span class = "comment" > // Note that this particular position in decisions_ will be overridden,< / span > < / div >
< div class = "line" > < a id = "l00929" name = "l00929" > < / a > < span class = "lineno" > 929< / span > < span class = "comment" > // but that is fine since this is a consequence of the previous decision,< / span > < / div >
< div class = "line" > < a id = "l00930" name = "l00930" > < / a > < span class = "lineno" > 930< / span > < span class = "comment" > // so we will never need to take it into account again.< / span > < / div >
< div class = "line" > < a id = "l00931" name = "l00931" > < / a > < span class = "lineno" > 931< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00932" name = "l00932" > < / a > < span class = "lineno" > 932< / span > }< / div >
< div class = "line" > < a id = "l00933" name = "l00933" > < / a > < span class = "lineno" > 933< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsFalse(previous_decision)) {< / div >
< div class = "line" > < a id = "l00934" name = "l00934" > < / a > < span class = "lineno" > 934< / span > < span class = "comment" > // See GetLastIncompatibleDecisions().< / span > < / div >
< div class = "line" > < a id = "l00935" name = "l00935" > < / a > < span class = "lineno" > 935< / span > *trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ab932e215c6dff3fe8f077d4d6a409c0c" > MutableConflict< / a > () = {previous_decision.Negated(),< / div >
< div class = "line" > < a id = "l00936" name = "l00936" > < / a > < span class = "lineno" > 936< / span > previous_decision};< / div >
< div class = "line" > < a id = "l00937" name = "l00937" > < / a > < span class = "lineno" > 937< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885" > ASSUMPTIONS_UNSAT< / a > ;< / div >
< div class = "line" > < a id = "l00938" name = "l00938" > < / a > < span class = "lineno" > 938< / span > }< / div >
< div class = "line" > < a id = "l00939" name = "l00939" > < / a > < span class = "lineno" > 939< / span > < / div >
< div class = "line" > < a id = "l00940" name = "l00940" > < / a > < span class = "lineno" > 940< / span > < span class = "comment" > // Not assigned, we try to take it.< / span > < / div >
< div class = "line" > < a id = "l00941" name = "l00941" > < / a > < span class = "lineno" > 941< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > old_level = current_decision_level_;< / div >
< div class = "line" > < a id = "l00942" name = "l00942" > < / a > < span class = "lineno" > 942< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9ae69b015a43c1a94e8815ab0dd8189c" > EnqueueDecisionAndBackjumpOnConflict< / a > (previous_decision);< / div >
< div class = "line" > < a id = "l00943" name = "l00943" > < / a > < span class = "lineno" > 943< / span > *first_propagation_index = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (*first_propagation_index, < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > );< / div >
< div class = "line" > < a id = "l00944" name = "l00944" > < / a > < span class = "lineno" > 944< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > == < a class = "code hl_variable" href = "namespaceoperations__research_1_1sat.html#aed3a7826cb80e5dfe7cadb141fde73f2" > kUnsatTrailIndex< / a > ) < span class = "keywordflow" > return< / span > < a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > INFEASIBLE< / a > ;< / div >
< div class = "line" > < a id = "l00945" name = "l00945" > < / a > < span class = "lineno" > 945< / span > < span class = "keywordflow" > if< / span > (current_decision_level_ < = old_level) {< / div >
< div class = "line" > < a id = "l00946" name = "l00946" > < / a > < span class = "lineno" > 946< / span > < span class = "comment" > // A conflict occurred which backjumped to an earlier decision level.< / span > < / div >
< div class = "line" > < a id = "l00947" name = "l00947" > < / a > < span class = "lineno" > 947< / span > < span class = "comment" > // We potentially backjumped over some valid decisions, so we need to< / span > < / div >
< div class = "line" > < a id = "l00948" name = "l00948" > < / a > < span class = "lineno" > 948< / span > < span class = "comment" > // continue the loop and try to re-enqueue them.< / span > < / div >
< div class = "line" > < a id = "l00949" name = "l00949" > < / a > < span class = "lineno" > 949< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00950" name = "l00950" > < / a > < span class = "lineno" > 950< / span > < span class = "comment" > // Note that there is no need to update max_level, because when we will< / span > < / div >
< div class = "line" > < a id = "l00951" name = "l00951" > < / a > < span class = "lineno" > 951< / span > < span class = "comment" > // try to reapply the current " previous_decision" it will result in a< / span > < / div >
< div class = "line" > < a id = "l00952" name = "l00952" > < / a > < span class = "lineno" > 952< / span > < span class = "comment" > // conflict. IMPORTANT: we can' t actually optimize this and abort the loop< / span > < / div >
< div class = "line" > < a id = "l00953" name = "l00953" > < / a > < span class = "lineno" > 953< / span > < span class = "comment" > // earlier though, because we need to check that it is conflicting because< / span > < / div >
< div class = "line" > < a id = "l00954" name = "l00954" > < / a > < span class = "lineno" > 954< / span > < span class = "comment" > // it is already propagated to false. There is no guarantee of this< / span > < / div >
< div class = "line" > < a id = "l00955" name = "l00955" > < / a > < span class = "lineno" > 955< / span > < span class = "comment" > // because we learn the first-UIP conflict. If it is not the case, we will< / span > < / div >
< div class = "line" > < a id = "l00956" name = "l00956" > < / a > < span class = "lineno" > 956< / span > < span class = "comment" > // then learn a new conflict, backjump, and continue the loop.< / span > < / div >
< div class = "line" > < a id = "l00957" name = "l00957" > < / a > < span class = "lineno" > 957< / span > decision_index = current_decision_level_;< / div >
< div class = "line" > < a id = "l00958" name = "l00958" > < / a > < span class = "lineno" > 958< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00959" name = "l00959" > < / a > < span class = "lineno" > 959< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00960" name = "l00960" > < / a > < span class = "lineno" > 960< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1" > FEASIBLE< / a > ;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00961" name = "l00961" > < / a > < span class = "lineno" > 961< / span > }< / div >
< div class = "line" > < a id = "l00962" name = "l00962" > < / a > < span class = "lineno" > 962< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00963" name = "l00963" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ab63a08713131e63e9cc4109f98ecf859" > 963< / a > < / span > < span class = "keywordtype" > int< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ab63a08713131e63e9cc4109f98ecf859" > SatSolver::EnqueueDecisionAndBacktrackOnConflict< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > true_literal) {< / div >
< div class = "line" > < a id = "l00964" name = "l00964" > < / a > < span class = "lineno" > 964< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00965" name = "l00965" > < / a > < span class = "lineno" > 965< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (PropagationIsDone());< / div >
< div class = "line" > < a id = "l00966" name = "l00966" > < / a > < span class = "lineno" > 966< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (assumptions_.empty());< / div >
< div class = "line" > < a id = "l00967" name = "l00967" > < / a > < span class = "lineno" > 967< / span > < / div >
< div class = "line" > < a id = "l00968" name = "l00968" > < / a > < span class = "lineno" > 968< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "namespaceoperations__research_1_1sat.html#aed3a7826cb80e5dfe7cadb141fde73f2" > kUnsatTrailIndex< / a > ;< / div >
< div class = "line" > < a id = "l00969" name = "l00969" > < / a > < span class = "lineno" > 969< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a" > DCHECK_LT< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), decisions_.size());< / div >
< div class = "line" > < a id = "l00970" name = "l00970" > < / a > < span class = "lineno" > 970< / span > decisions_[< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ()].literal = true_literal;< / div >
< div class = "line" > < a id = "l00971" name = "l00971" > < / a > < span class = "lineno" > 971< / span > < span class = "keywordtype" > int< / span > first_propagation_index = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l00972" name = "l00972" > < / a > < span class = "lineno" > 972< / span > ReapplyDecisionsUpTo(< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), & first_propagation_index);< / div >
< div class = "line" > < a id = "l00973" name = "l00973" > < / a > < span class = "lineno" > 973< / span > < span class = "keywordflow" > return< / span > first_propagation_index;< / div >
< div class = "line" > < a id = "l00974" name = "l00974" > < / a > < span class = "lineno" > 974< / span > }< / div >
< div class = "line" > < a id = "l00975" name = "l00975" > < / a > < span class = "lineno" > 975< / span > < / div >
< div class = "line" > < a id = "l00976" name = "l00976" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a093c00c2bd81c8ec7a5f86a4466fa7d5" > 976< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a093c00c2bd81c8ec7a5f86a4466fa7d5" > SatSolver::EnqueueDecisionIfNotConflicting< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > true_literal) {< / div >
< div class = "line" > < a id = "l00977" name = "l00977" > < / a > < span class = "lineno" > 977< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00978" name = "l00978" > < / a > < span class = "lineno" > 978< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (PropagationIsDone());< / div >
< div class = "line" > < a id = "l00979" name = "l00979" > < / a > < span class = "lineno" > 979< / span > < / div >
< div class = "line" > < a id = "l00980" name = "l00980" > < / a > < span class = "lineno" > 980< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "namespaceoperations__research_1_1sat.html#aed3a7826cb80e5dfe7cadb141fde73f2" > kUnsatTrailIndex< / a > ;< / div >
< div class = "line" > < a id = "l00981" name = "l00981" > < / a > < span class = "lineno" > 981< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > current_level = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ();< / div >
< div class = "line" > < a id = "l00982" name = "l00982" > < / a > < span class = "lineno" > 982< / span > EnqueueNewDecision(true_literal);< / div >
< div class = "line" > < a id = "l00983" name = "l00983" > < / a > < span class = "lineno" > 983< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > Propagate< / a > ()) {< / div >
< div class = "line" > < a id = "l00984" name = "l00984" > < / a > < span class = "lineno" > 984< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00985" name = "l00985" > < / a > < span class = "lineno" > 985< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00986" name = "l00986" > < / a > < span class = "lineno" > 986< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (current_level);< / div >
< div class = "line" > < a id = "l00987" name = "l00987" > < / a > < span class = "lineno" > 987< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00988" name = "l00988" > < / a > < span class = "lineno" > 988< / span > }< / div >
< div class = "line" > < a id = "l00989" name = "l00989" > < / a > < span class = "lineno" > 989< / span > }< / div >
< div class = "line" > < a id = "l00990" name = "l00990" > < / a > < span class = "lineno" > 990< / span > < / div >
< div class = "line" > < a id = "l00991" name = "l00991" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > 991< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > SatSolver::Backtrack< / a > (< span class = "keywordtype" > int< / span > target_level) {< / div >
< div class = "line" > < a id = "l00992" name = "l00992" > < / a > < span class = "lineno" > 992< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l00993" name = "l00993" > < / a > < span class = "lineno" > 993< / span > < span class = "comment" > // TODO(user): The backtrack method should not be called when the model is< / span > < / div >
< div class = "line" > < a id = "l00994" name = "l00994" > < / a > < span class = "lineno" > 994< / span > < span class = "comment" > // unsat. Add a DCHECK to prevent that, but before fix the< / span > < / div >
< div class = "line" > < a id = "l00995" name = "l00995" > < / a > < span class = "lineno" > 995< / span > < span class = "comment" > // bop::BopOptimizerBase architecture.< / span > < / div >
< div class = "line" > < a id = "l00996" name = "l00996" > < / a > < span class = "lineno" > 996< / span > < / div >
< div class = "line" > < a id = "l00997" name = "l00997" > < / a > < span class = "lineno" > 997< / span > < span class = "comment" > // Do nothing if the CurrentDecisionLevel() is already correct.< / span > < / div >
< div class = "line" > < a id = "l00998" name = "l00998" > < / a > < span class = "lineno" > 998< / span > < span class = "comment" > // This is needed, otherwise target_trail_index below will remain at zero and< / span > < / div >
< div class = "line" > < a id = "l00999" name = "l00999" > < / a > < span class = "lineno" > 999< / span > < span class = "comment" > // that will cause some problems. Note that we could forbid a user to call< / span > < / div >
< div class = "line" > < a id = "l01000" name = "l01000" > < / a > < span class = "lineno" > 1000< / span > < span class = "comment" > // Backtrack() with the current level, but that is annoying when you just< / span > < / div >
< div class = "line" > < a id = "l01001" name = "l01001" > < / a > < span class = "lineno" > 1001< / span > < span class = "comment" > // want to reset the solver with Backtrack(0).< / span > < / div >
< div class = "line" > < a id = "l01002" name = "l01002" > < / a > < span class = "lineno" > 1002< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () == target_level) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01003" name = "l01003" > < / a > < span class = "lineno" > 1003< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (target_level, 0);< / div >
< div class = "line" > < a id = "l01004" name = "l01004" > < / a > < span class = "lineno" > 1004< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (target_level, < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ());< / div >
< div class = "line" > < a id = "l01005" name = "l01005" > < / a > < span class = "lineno" > 1005< / span > < / div >
< div class = "line" > < a id = "l01006" name = "l01006" > < / a > < span class = "lineno" > 1006< / span > < span class = "comment" > // Any backtrack to the root from a positive one is counted as a restart.< / span > < / div >
< div class = "line" > < a id = "l01007" name = "l01007" > < / a > < span class = "lineno" > 1007< / span > < span class = "keywordflow" > if< / span > (target_level == 0) counters_.num_restarts++;< / div >
< div class = "line" > < a id = "l01008" name = "l01008" > < / a > < span class = "lineno" > 1008< / span > < / div >
< div class = "line" > < a id = "l01009" name = "l01009" > < / a > < span class = "lineno" > 1009< / span > < span class = "comment" > // Per the SatPropagator interface, this is needed before calling Untrail.< / span > < / div >
< div class = "line" > < a id = "l01010" name = "l01010" > < / a > < span class = "lineno" > 1010< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#adeeeb993a93b815c1c343f9c46ec3564" > SetDecisionLevel< / a > (target_level);< / div >
< div class = "line" > < a id = "l01011" name = "l01011" > < / a > < span class = "lineno" > 1011< / span > < / div >
< div class = "line" > < a id = "l01012" name = "l01012" > < / a > < span class = "lineno" > 1012< / span > < span class = "keywordtype" > int< / span > target_trail_index = 0;< / div >
< div class = "line" > < a id = "l01013" name = "l01013" > < / a > < span class = "lineno" > 1013< / span > < span class = "keywordflow" > while< / span > (current_decision_level_ > target_level) {< / div >
< div class = "line" > < a id = "l01014" name = "l01014" > < / a > < span class = "lineno" > 1014< / span > --current_decision_level_;< / div >
< div class = "line" > < a id = "l01015" name = "l01015" > < / a > < span class = "lineno" > 1015< / span > target_trail_index = decisions_[current_decision_level_].trail_index;< / div >
< div class = "line" > < a id = "l01016" name = "l01016" > < / a > < span class = "lineno" > 1016< / span > }< / div >
< div class = "line" > < a id = "l01017" name = "l01017" > < / a > < span class = "lineno" > 1017< / span > < / div >
< div class = "line" > < a id = "l01018" name = "l01018" > < / a > < span class = "lineno" > 1018< / span > Untrail(target_trail_index);< / div >
< div class = "line" > < a id = "l01019" name = "l01019" > < / a > < span class = "lineno" > 1019< / span > last_decision_or_backtrack_trail_index_ = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l01020" name = "l01020" > < / a > < span class = "lineno" > 1020< / span > }< / div >
< div class = "line" > < a id = "l01021" name = "l01021" > < / a > < span class = "lineno" > 1021< / span > < / div >
< div class = "line" > < a id = "l01022" name = "l01022" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5a9a59c0a2f7fcec81cc44b1aa159186" > 1022< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5a9a59c0a2f7fcec81cc44b1aa159186" > SatSolver::AddBinaryClauses< / a > (< span class = "keyword" > const< / span > std::vector< BinaryClause> & < a class = "code hl_variable" href = "cp__model__solver_8cc.html#a21696c8707868a3d522d1bee261f4185" > clauses< / a > ) {< / div >
< div class = "line" > < a id = "l01023" name = "l01023" > < / a > < span class = "lineno" > 1023< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01024" name = "l01024" > < / a > < span class = "lineno" > 1024< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l01025" name = "l01025" > < / a > < span class = "lineno" > 1025< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_binary_clause.html" > BinaryClause< / a > c : < a class = "code hl_variable" href = "cp__model__solver_8cc.html#a21696c8707868a3d522d1bee261f4185" > clauses< / a > ) {< / div >
< div class = "line" > < a id = "l01026" name = "l01026" > < / a > < span class = "lineno" > 1026< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#aac912e9410b8989493f492fcbb2d9094" > AddBinaryClause< / a > (c.a, c.b)) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01027" name = "l01027" > < / a > < span class = "lineno" > 1027< / span > }< / div >
< div class = "line" > < a id = "l01028" name = "l01028" > < / a > < span class = "lineno" > 1028< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > Propagate< / a > ()) < span class = "keywordflow" > return< / span > SetModelUnsat();< / div >
< div class = "line" > < a id = "l01029" name = "l01029" > < / a > < span class = "lineno" > 1029< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01030" name = "l01030" > < / a > < span class = "lineno" > 1030< / span > }< / div >
< div class = "line" > < a id = "l01031" name = "l01031" > < / a > < span class = "lineno" > 1031< / span > < / div >
< div class = "line" > < a id = "l01032" name = "l01032" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4e9c1f685afe26db1566eaa65724b40b" > 1032< / a > < / span > < span class = "keyword" > const< / span > std::vector< BinaryClause> & < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4e9c1f685afe26db1566eaa65724b40b" > SatSolver::NewlyAddedBinaryClauses< / a > () {< / div >
< div class = "line" > < a id = "l01033" name = "l01033" > < / a > < span class = "lineno" > 1033< / span > < span class = "keywordflow" > return< / span > binary_clauses_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_clause_manager.html#a5b8bd742e2d44b9c3dbd7abd9f2546e9" > newly_added< / a > ();< / div >
< div class = "line" > < a id = "l01034" name = "l01034" > < / a > < span class = "lineno" > 1034< / span > }< / div >
< div class = "line" > < a id = "l01035" name = "l01035" > < / a > < span class = "lineno" > 1035< / span > < / div >
< div class = "line" > < a id = "l01036" name = "l01036" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#afdb0cc1ac877cd981dcd3f0b0763e644" > 1036< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#afdb0cc1ac877cd981dcd3f0b0763e644" > SatSolver::ClearNewlyAddedBinaryClauses< / a > () {< / div >
< div class = "line" > < a id = "l01037" name = "l01037" > < / a > < span class = "lineno" > 1037< / span > binary_clauses_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_clause_manager.html#a47e143bc6df345d913315f79e0c3d290" > ClearNewlyAdded< / a > ();< / div >
< div class = "line" > < a id = "l01038" name = "l01038" > < / a > < span class = "lineno" > 1038< / span > }< / div >
< div class = "line" > < a id = "l01039" name = "l01039" > < / a > < span class = "lineno" > 1039< / span > < / div >
< div class = "line" > < a id = "l01040" name = "l01040" > < / a > < span class = "lineno" > 1040< / span > < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a id = "l01041" name = "l01041" > < / a > < span class = "lineno" > 1041< / span > < span class = "comment" > // Return the next value that is a multiple of interval.< / span > < / div >
< div class = "line" > < a id = "l01042" name = "l01042" > < / a > < span class = "lineno" > 1042< / span > int64_t NextMultipleOf(int64_t < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > , int64_t < a class = "code hl_variable" href = "resource_8cc.html#af92a8383a05fdf586a52263d358f5ada" > interval< / a > ) {< / div >
< div class = "line" > < a id = "l01043" name = "l01043" > < / a > < span class = "lineno" > 1043< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "resource_8cc.html#af92a8383a05fdf586a52263d358f5ada" > interval< / a > * (1 + < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > / < a class = "code hl_variable" href = "resource_8cc.html#af92a8383a05fdf586a52263d358f5ada" > interval< / a > );< / div >
< div class = "line" > < a id = "l01044" name = "l01044" > < / a > < span class = "lineno" > 1044< / span > }< / div >
< div class = "line" > < a id = "l01045" name = "l01045" > < / a > < span class = "lineno" > 1045< / span > } < span class = "comment" > // namespace< / span > < / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01046" name = "l01046" > < / a > < span class = "lineno" > 1046< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01047" name = "l01047" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2abca6db0c780a4482d1ac9eb6365057" > 1047< / a > < / span > < a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2abca6db0c780a4482d1ac9eb6365057" > SatSolver::ResetAndSolveWithGivenAssumptions< / a > (< / div >
< div class = "line" > < a id = "l01048" name = "l01048" > < / a > < span class = "lineno" > 1048< / span > < span class = "keyword" > const< / span > std::vector< Literal> & assumptions) {< / div >
< div class = "line" > < a id = "l01049" name = "l01049" > < / a > < span class = "lineno" > 1049< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01050" name = "l01050" > < / a > < span class = "lineno" > 1050< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad4494c6831942d344ed1d9758f0e6cd9" > ResetWithGivenAssumptions< / a > (assumptions)) < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5bbe13ebae8aa11a8a4ac1cb01bc66ad" > UnsatStatus< / a > ();< / div >
< div class = "line" > < a id = "l01051" name = "l01051" > < / a > < span class = "lineno" > 1051< / span > < span class = "keywordflow" > return< / span > SolveInternal(time_limit_);< / div >
< div class = "line" > < a id = "l01052" name = "l01052" > < / a > < span class = "lineno" > 1052< / span > }< / div >
< div class = "line" > < a id = "l01053" name = "l01053" > < / a > < span class = "lineno" > 1053< / span > < / div >
< div class = "line" > < a id = "l01054" name = "l01054" > < / a > < span class = "lineno" > 1054< / span > < a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > SatSolver::StatusWithLog(Status < a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > ) {< / div >
< div class = "line" > < a id = "l01055" name = "l01055" > < / a > < span class = "lineno" > 1055< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, RunningStatisticsString());< / div >
< div class = "line" > < a id = "l01056" name = "l01056" > < / a > < span class = "lineno" > 1056< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, StatusString(< a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > ));< / div >
< div class = "line" > < a id = "l01057" name = "l01057" > < / a > < span class = "lineno" > 1057< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > ;< / div >
< div class = "line" > < a id = "l01058" name = "l01058" > < / a > < span class = "lineno" > 1058< / span > }< / div >
< div class = "line" > < a id = "l01059" name = "l01059" > < / a > < span class = "lineno" > 1059< / span > < / div >
< div class = "line" > < a id = "l01060" name = "l01060" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5ca47674a4a0b5e7f40eb430ab474440" > 1060< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5ca47674a4a0b5e7f40eb430ab474440" > SatSolver::SetAssumptionLevel< / a > (< span class = "keywordtype" > int< / span > assumption_level) {< / div >
< div class = "line" > < a id = "l01061" name = "l01061" > < / a > < span class = "lineno" > 1061< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9" > CHECK_GE< / a > (assumption_level, 0);< / div >
< div class = "line" > < a id = "l01062" name = "l01062" > < / a > < span class = "lineno" > 1062< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c" > CHECK_LE< / a > (assumption_level, < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ());< / div >
< div class = "line" > < a id = "l01063" name = "l01063" > < / a > < span class = "lineno" > 1063< / span > assumption_level_ = assumption_level;< / div >
< div class = "line" > < a id = "l01064" name = "l01064" > < / a > < span class = "lineno" > 1064< / span > < / div >
< div class = "line" > < a id = "l01065" name = "l01065" > < / a > < span class = "lineno" > 1065< / span > < span class = "comment" > // New assumption code.< / span > < / div >
< div class = "line" > < a id = "l01066" name = "l01066" > < / a > < span class = "lineno" > 1066< / span > < span class = "keywordflow" > if< / span > (!assumptions_.empty()) {< / div >
< div class = "line" > < a id = "l01067" name = "l01067" > < / a > < span class = "lineno" > 1067< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (assumption_level, 0);< / div >
< div class = "line" > < a id = "l01068" name = "l01068" > < / a > < span class = "lineno" > 1068< / span > assumptions_.clear();< / div >
< div class = "line" > < a id = "l01069" name = "l01069" > < / a > < span class = "lineno" > 1069< / span > }< / div >
< div class = "line" > < a id = "l01070" name = "l01070" > < / a > < span class = "lineno" > 1070< / span > }< / div >
< div class = "line" > < a id = "l01071" name = "l01071" > < / a > < span class = "lineno" > 1071< / span > < / div >
< div class = "line" > < a id = "l01072" name = "l01072" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a27e14216f4d9330375fc0089a1919f20" > 1072< / a > < / span > < a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a27e14216f4d9330375fc0089a1919f20" > SatSolver::SolveWithTimeLimit< / a > (< a class = "code hl_class" href = "classoperations__research_1_1_time_limit.html" > TimeLimit< / a > * < a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > ) {< / div >
< div class = "line" > < a id = "l01073" name = "l01073" > < / a > < span class = "lineno" > 1073< / span > < span class = "keywordflow" > return< / span > SolveInternal(< a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > == < span class = "keyword" > nullptr< / span > ? time_limit_ : < a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > );< / div >
< div class = "line" > < a id = "l01074" name = "l01074" > < / a > < span class = "lineno" > 1074< / span > }< / div >
< div class = "line" > < a id = "l01075" name = "l01075" > < / a > < span class = "lineno" > 1075< / span > < / div >
< div class = "line" > < a id = "l01076" name = "l01076" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2b006481369eb4f4cb7f3037dfdd8404" > 1076< / a > < / span > < a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2b006481369eb4f4cb7f3037dfdd8404" > SatSolver::Solve< / a > () { < span class = "keywordflow" > return< / span > SolveInternal(time_limit_); }< / div >
< div class = "line" > < a id = "l01077" name = "l01077" > < / a > < span class = "lineno" > 1077< / span > < / div >
< div class = "line" > < a id = "l01078" name = "l01078" > < / a > < span class = "lineno" > 1078< / span > < span class = "keywordtype" > void< / span > SatSolver::KeepAllClauseUsedToInfer(BooleanVariable variable) {< / div >
< div class = "line" > < a id = "l01079" name = "l01079" > < / a > < span class = "lineno" > 1079< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().VariableIsAssigned(variable));< / div >
< div class = "line" > < a id = "l01080" name = "l01080" > < / a > < span class = "lineno" > 1080< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (variable).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a6a330c3b2adf87bfa27e9a9450d8bc40" > level< / a > == 0) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01081" name = "l01081" > < / a > < span class = "lineno" > 1081< / span > < span class = "keywordtype" > int< / span > trail_index = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (variable).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a0f2d611d5c2d56f60646827438acf3af" > trail_index< / a > ;< / div >
< div class = "line" > < a id = "l01082" name = "l01082" > < / a > < span class = "lineno" > 1082< / span > std::vector< bool> is_marked(trail_index + 1, < span class = "keyword" > false< / span > ); < span class = "comment" > // move to local member.< / span > < / div >
< div class = "line" > < a id = "l01083" name = "l01083" > < / a > < span class = "lineno" > 1083< / span > is_marked[trail_index] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01084" name = "l01084" > < / a > < span class = "lineno" > 1084< / span > < span class = "keywordtype" > int< / span > num = 1;< / div >
< div class = "line" > < a id = "l01085" name = "l01085" > < / a > < span class = "lineno" > 1085< / span > < span class = "keywordflow" > for< / span > (; num > 0 & & trail_index > = 0; --trail_index) {< / div >
< div class = "line" > < a id = "l01086" name = "l01086" > < / a > < span class = "lineno" > 1086< / span > < span class = "keywordflow" > if< / span > (!is_marked[trail_index]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01087" name = "l01087" > < / a > < span class = "lineno" > 1087< / span > is_marked[trail_index] = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01088" name = "l01088" > < / a > < span class = "lineno" > 1088< / span > --num;< / div >
< div class = "line" > < a id = "l01089" name = "l01089" > < / a > < span class = "lineno" > 1089< / span > < / div >
< div class = "line" > < a id = "l01090" name = "l01090" > < / a > < span class = "lineno" > 1090< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = (*trail_)[trail_index].Variable();< / div >
< div class = "line" > < a id = "l01091" name = "l01091" > < / a > < span class = "lineno" > 1091< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_clause.html" > SatClause< / a > * clause = ReasonClauseOrNull(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01092" name = "l01092" > < / a > < span class = "lineno" > 1092< / span > < span class = "keywordflow" > if< / span > (clause != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01093" name = "l01093" > < / a > < span class = "lineno" > 1093< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > mutable_clauses_info< / a > ()-> erase(clause);< / div >
< div class = "line" > < a id = "l01094" name = "l01094" > < / a > < span class = "lineno" > 1094< / span > }< / div >
< div class = "line" > < a id = "l01095" name = "l01095" > < / a > < span class = "lineno" > 1095< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal l : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > )) {< / div >
< div class = "line" > < a id = "l01096" name = "l01096" > < / a > < span class = "lineno" > 1096< / span > < span class = "keyword" > const< / span > AssignmentInfo& info = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (l.Variable());< / div >
< div class = "line" > < a id = "l01097" name = "l01097" > < / a > < span class = "lineno" > 1097< / span > < span class = "keywordflow" > if< / span > (info.level == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01098" name = "l01098" > < / a > < span class = "lineno" > 1098< / span > < span class = "keywordflow" > if< / span > (!is_marked[info.trail_index]) {< / div >
< div class = "line" > < a id = "l01099" name = "l01099" > < / a > < span class = "lineno" > 1099< / span > is_marked[info.trail_index] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01100" name = "l01100" > < / a > < span class = "lineno" > 1100< / span > ++num;< / div >
< div class = "line" > < a id = "l01101" name = "l01101" > < / a > < span class = "lineno" > 1101< / span > }< / div >
< div class = "line" > < a id = "l01102" name = "l01102" > < / a > < span class = "lineno" > 1102< / span > }< / div >
< div class = "line" > < a id = "l01103" name = "l01103" > < / a > < span class = "lineno" > 1103< / span > }< / div >
< div class = "line" > < a id = "l01104" name = "l01104" > < / a > < span class = "lineno" > 1104< / span > }< / div >
< div class = "line" > < a id = "l01105" name = "l01105" > < / a > < span class = "lineno" > 1105< / span > < / div >
< div class = "line" > < a id = "l01106" name = "l01106" > < / a > < span class = "lineno" > 1106< / span > < span class = "comment" > // TODO(user): this is really an in-processing stuff and should be moved out< / span > < / div >
< div class = "line" > < a id = "l01107" name = "l01107" > < / a > < span class = "lineno" > 1107< / span > < span class = "comment" > // of here. I think the name for that (or similar) technique is called vivify.< / span > < / div >
< div class = "line" > < a id = "l01108" name = "l01108" > < / a > < span class = "lineno" > 1108< / span > < span class = "comment" > // Ideally this should be scheduled after other faster in-processing technique.< / span > < / div >
< div class = "line" > < a id = "l01109" name = "l01109" > < / a > < span class = "lineno" > 1109< / span > < span class = "keywordtype" > void< / span > SatSolver::TryToMinimizeClause(SatClause* clause) {< / div >
< div class = "line" > < a id = "l01110" name = "l01110" > < / a > < span class = "lineno" > 1110< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l01111" name = "l01111" > < / a > < span class = "lineno" > 1111< / span > ++counters_.minimization_num_clauses;< / div >
< div class = "line" > < a id = "l01112" name = "l01112" > < / a > < span class = "lineno" > 1112< / span > < / div >
< div class = "line" > < a id = "l01113" name = "l01113" > < / a > < span class = "lineno" > 1113< / span > absl::btree_set< LiteralIndex> moved_last;< / div >
< div class = "line" > < a id = "l01114" name = "l01114" > < / a > < span class = "lineno" > 1114< / span > std::vector< Literal> candidate(clause-> begin(), clause-> end());< / div >
< div class = "line" > < a id = "l01115" name = "l01115" > < / a > < span class = "lineno" > 1115< / span > < span class = "keywordflow" > while< / span > (!model_is_unsat_) {< / div >
< div class = "line" > < a id = "l01116" name = "l01116" > < / a > < span class = "lineno" > 1116< / span > < span class = "comment" > // We want each literal in candidate to appear last once in our propagation< / span > < / div >
< div class = "line" > < a id = "l01117" name = "l01117" > < / a > < span class = "lineno" > 1117< / span > < span class = "comment" > // order. We want to do that while maximizing the reutilization of the< / span > < / div >
< div class = "line" > < a id = "l01118" name = "l01118" > < / a > < span class = "lineno" > 1118< / span > < span class = "comment" > // current assignment prefix, that is minimizing the number of< / span > < / div >
< div class = "line" > < a id = "l01119" name = "l01119" > < / a > < span class = "lineno" > 1119< / span > < span class = "comment" > // decision/progagation we need to perform.< / span > < / div >
< div class = "line" > < a id = "l01120" name = "l01120" > < / a > < span class = "lineno" > 1120< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > target_level = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ae1ffd76bca69ccb2e7b65dfe2cf76f2e" > MoveOneUnprocessedLiteralLast< / a > (< / div >
< div class = "line" > < a id = "l01121" name = "l01121" > < / a > < span class = "lineno" > 1121< / span > moved_last, < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), & candidate);< / div >
< div class = "line" > < a id = "l01122" name = "l01122" > < / a > < span class = "lineno" > 1122< / span > < span class = "keywordflow" > if< / span > (target_level == -1) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01123" name = "l01123" > < / a > < span class = "lineno" > 1123< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (target_level);< / div >
< div class = "line" > < a id = "l01124" name = "l01124" > < / a > < span class = "lineno" > 1124< / span > < span class = "keywordflow" > while< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () < candidate.size()) {< / div >
< div class = "line" > < a id = "l01125" name = "l01125" > < / a > < span class = "lineno" > 1125< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ();< / div >
< div class = "line" > < a id = "l01126" name = "l01126" > < / a > < span class = "lineno" > 1126< / span > < span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > = candidate[level];< / div >
< div class = "line" > < a id = "l01127" name = "l01127" > < / a > < span class = "lineno" > 1127< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsFalse(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > )) {< / div >
< div class = "line" > < a id = "l01128" name = "l01128" > < / a > < span class = "lineno" > 1128< / span > candidate.erase(candidate.begin() + level);< / div >
< div class = "line" > < a id = "l01129" name = "l01129" > < / a > < span class = "lineno" > 1129< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01130" name = "l01130" > < / a > < span class = "lineno" > 1130< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsTrue(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > )) {< / div >
< div class = "line" > < a id = "l01131" name = "l01131" > < / a > < span class = "lineno" > 1131< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > variable_level =< / div >
< div class = "line" > < a id = "l01132" name = "l01132" > < / a > < span class = "lineno" > 1132< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5b06f24fb581de78b321dfd793931439" > LiteralTrail< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a6a330c3b2adf87bfa27e9a9450d8bc40" > level< / a > ;< / div >
< div class = "line" > < a id = "l01133" name = "l01133" > < / a > < span class = "lineno" > 1133< / span > < span class = "keywordflow" > if< / span > (variable_level == 0) {< / div >
< div class = "line" > < a id = "l01134" name = "l01134" > < / a > < span class = "lineno" > 1134< / span > ProcessNewlyFixedVariablesForDratProof();< / div >
< div class = "line" > < a id = "l01135" name = "l01135" > < / a > < span class = "lineno" > 1135< / span > counters_.minimization_num_true++;< / div >
< div class = "line" > < a id = "l01136" name = "l01136" > < / a > < span class = "lineno" > 1136< / span > counters_.minimization_num_removed_literals += clause-> size();< / div >
< div class = "line" > < a id = "l01137" name = "l01137" > < / a > < span class = "lineno" > 1137< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (0);< / div >
< div class = "line" > < a id = "l01138" name = "l01138" > < / a > < span class = "lineno" > 1138< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#af3769ff2cdf469ae4a13cc4f6b15bc14" > Detach< / a > (clause);< / div >
< div class = "line" > < a id = "l01139" name = "l01139" > < / a > < span class = "lineno" > 1139< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01140" name = "l01140" > < / a > < span class = "lineno" > 1140< / span > }< / div >
< div class = "line" > < a id = "l01141" name = "l01141" > < / a > < span class = "lineno" > 1141< / span > < / div >
< div class = "line" > < a id = "l01142" name = "l01142" > < / a > < span class = "lineno" > 1142< / span > < span class = "comment" > // If literal (at true) wasn' t propagated by this clause, then we< / span > < / div >
< div class = "line" > < a id = "l01143" name = "l01143" > < / a > < span class = "lineno" > 1143< / span > < span class = "comment" > // know that this clause is subsumed by other clauses in the database,< / span > < / div >
< div class = "line" > < a id = "l01144" name = "l01144" > < / a > < span class = "lineno" > 1144< / span > < span class = "comment" > // so we can remove it. Note however that we need to make sure we will< / span > < / div >
< div class = "line" > < a id = "l01145" name = "l01145" > < / a > < span class = "lineno" > 1145< / span > < span class = "comment" > // never remove the clauses that subsumes it later.< / span > < / div >
< div class = "line" > < a id = "l01146" name = "l01146" > < / a > < span class = "lineno" > 1146< / span > < span class = "keywordflow" > if< / span > (ReasonClauseOrNull(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()) != clause) {< / div >
< div class = "line" > < a id = "l01147" name = "l01147" > < / a > < span class = "lineno" > 1147< / span > counters_.minimization_num_subsumed++;< / div >
< div class = "line" > < a id = "l01148" name = "l01148" > < / a > < span class = "lineno" > 1148< / span > counters_.minimization_num_removed_literals += clause-> size();< / div >
< div class = "line" > < a id = "l01149" name = "l01149" > < / a > < span class = "lineno" > 1149< / span > < / div >
< div class = "line" > < a id = "l01150" name = "l01150" > < / a > < span class = "lineno" > 1150< / span > < span class = "comment" > // TODO(user): do not do that if it make us keep too many clauses?< / span > < / div >
< div class = "line" > < a id = "l01151" name = "l01151" > < / a > < span class = "lineno" > 1151< / span > KeepAllClauseUsedToInfer(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable());< / div >
< div class = "line" > < a id = "l01152" name = "l01152" > < / a > < span class = "lineno" > 1152< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (0);< / div >
< div class = "line" > < a id = "l01153" name = "l01153" > < / a > < span class = "lineno" > 1153< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#af3769ff2cdf469ae4a13cc4f6b15bc14" > Detach< / a > (clause);< / div >
< div class = "line" > < a id = "l01154" name = "l01154" > < / a > < span class = "lineno" > 1154< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01155" name = "l01155" > < / a > < span class = "lineno" > 1155< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01156" name = "l01156" > < / a > < span class = "lineno" > 1156< / span > < span class = "comment" > // Simplify. Note(user): we could only keep in clause the literals< / span > < / div >
< div class = "line" > < a id = "l01157" name = "l01157" > < / a > < span class = "lineno" > 1157< / span > < span class = "comment" > // responsible for the propagation, but because of the subsumption< / span > < / div >
< div class = "line" > < a id = "l01158" name = "l01158" > < / a > < span class = "lineno" > 1158< / span > < span class = "comment" > // above, this is not needed.< / span > < / div >
< div class = "line" > < a id = "l01159" name = "l01159" > < / a > < span class = "lineno" > 1159< / span > < span class = "keywordflow" > if< / span > (variable_level + 1 < candidate.size()) {< / div >
< div class = "line" > < a id = "l01160" name = "l01160" > < / a > < span class = "lineno" > 1160< / span > candidate.resize(variable_level);< / div >
< div class = "line" > < a id = "l01161" name = "l01161" > < / a > < span class = "lineno" > 1161< / span > candidate.push_back(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > );< / div >
< div class = "line" > < a id = "l01162" name = "l01162" > < / a > < span class = "lineno" > 1162< / span > }< / div >
< div class = "line" > < a id = "l01163" name = "l01163" > < / a > < span class = "lineno" > 1163< / span > }< / div >
< div class = "line" > < a id = "l01164" name = "l01164" > < / a > < span class = "lineno" > 1164< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01165" name = "l01165" > < / a > < span class = "lineno" > 1165< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01166" name = "l01166" > < / a > < span class = "lineno" > 1166< / span > ++counters_.minimization_num_decisions;< / div >
< div class = "line" > < a id = "l01167" name = "l01167" > < / a > < span class = "lineno" > 1167< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9ae69b015a43c1a94e8815ab0dd8189c" > EnqueueDecisionAndBackjumpOnConflict< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Negated());< / div >
< div class = "line" > < a id = "l01168" name = "l01168" > < / a > < span class = "lineno" > 1168< / span > < span class = "keywordflow" > if< / span > (!clause-> IsAttached()) {< / div >
< div class = "line" > < a id = "l01169" name = "l01169" > < / a > < span class = "lineno" > 1169< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (0);< / div >
< div class = "line" > < a id = "l01170" name = "l01170" > < / a > < span class = "lineno" > 1170< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01171" name = "l01171" > < / a > < span class = "lineno" > 1171< / span > }< / div >
< div class = "line" > < a id = "l01172" name = "l01172" > < / a > < span class = "lineno" > 1172< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01173" name = "l01173" > < / a > < span class = "lineno" > 1173< / span > }< / div >
< div class = "line" > < a id = "l01174" name = "l01174" > < / a > < span class = "lineno" > 1174< / span > }< / div >
< div class = "line" > < a id = "l01175" name = "l01175" > < / a > < span class = "lineno" > 1175< / span > < span class = "keywordflow" > if< / span > (candidate.empty()) {< / div >
< div class = "line" > < a id = "l01176" name = "l01176" > < / a > < span class = "lineno" > 1176< / span > model_is_unsat_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01177" name = "l01177" > < / a > < span class = "lineno" > 1177< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01178" name = "l01178" > < / a > < span class = "lineno" > 1178< / span > }< / div >
< div class = "line" > < a id = "l01179" name = "l01179" > < / a > < span class = "lineno" > 1179< / span > moved_last.insert(candidate.back().Index());< / div >
< div class = "line" > < a id = "l01180" name = "l01180" > < / a > < span class = "lineno" > 1180< / span > }< / div >
< div class = "line" > < a id = "l01181" name = "l01181" > < / a > < span class = "lineno" > 1181< / span > < / div >
< div class = "line" > < a id = "l01182" name = "l01182" > < / a > < span class = "lineno" > 1182< / span > < span class = "comment" > // Returns if we don' t have any minimization.< / span > < / div >
< div class = "line" > < a id = "l01183" name = "l01183" > < / a > < span class = "lineno" > 1183< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (0);< / div >
< div class = "line" > < a id = "l01184" name = "l01184" > < / a > < span class = "lineno" > 1184< / span > < span class = "keywordflow" > if< / span > (candidate.size() == clause-> size()) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01185" name = "l01185" > < / a > < span class = "lineno" > 1185< / span > < / div >
< div class = "line" > < a id = "l01186" name = "l01186" > < / a > < span class = "lineno" > 1186< / span > < span class = "keywordflow" > if< / span > (candidate.size() == 1) {< / div >
< div class = "line" > < a id = "l01187" name = "l01187" > < / a > < span class = "lineno" > 1187< / span > < span class = "keywordflow" > if< / span > (drat_proof_handler_ != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01188" name = "l01188" > < / a > < span class = "lineno" > 1188< / span > drat_proof_handler_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a98bacf41c50979896b4a5f5e41fb0ccf" > AddClause< / a > (candidate);< / div >
< div class = "line" > < a id = "l01189" name = "l01189" > < / a > < span class = "lineno" > 1189< / span > }< / div >
< div class = "line" > < a id = "l01190" name = "l01190" > < / a > < span class = "lineno" > 1190< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().VariableIsAssigned(candidate[0].Variable())) {< / div >
< div class = "line" > < a id = "l01191" name = "l01191" > < / a > < span class = "lineno" > 1191< / span > counters_.minimization_num_removed_literals += clause-> size();< / div >
< div class = "line" > < a id = "l01192" name = "l01192" > < / a > < span class = "lineno" > 1192< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#afb89e56bea39296ff292b51a84491875" > EnqueueWithUnitReason< / a > (candidate[0]);< / div >
< div class = "line" > < a id = "l01193" name = "l01193" > < / a > < span class = "lineno" > 1193< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > FinishPropagation< / a > ();< / div >
< div class = "line" > < a id = "l01194" name = "l01194" > < / a > < span class = "lineno" > 1194< / span > }< / div >
< div class = "line" > < a id = "l01195" name = "l01195" > < / a > < span class = "lineno" > 1195< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01196" name = "l01196" > < / a > < span class = "lineno" > 1196< / span > }< / div >
< div class = "line" > < a id = "l01197" name = "l01197" > < / a > < span class = "lineno" > 1197< / span > < / div >
< div class = "line" > < a id = "l01198" name = "l01198" > < / a > < span class = "lineno" > 1198< / span > < span class = "keywordflow" > if< / span > (candidate.size() == 2) {< / div >
< div class = "line" > < a id = "l01199" name = "l01199" > < / a > < span class = "lineno" > 1199< / span > counters_.minimization_num_removed_literals += clause-> size() - 2;< / div >
< div class = "line" > < a id = "l01200" name = "l01200" > < / a > < span class = "lineno" > 1200< / span > < / div >
< div class = "line" > < a id = "l01201" name = "l01201" > < / a > < span class = "lineno" > 1201< / span > < span class = "comment" > // The order is important for the drat proof.< / span > < / div >
< div class = "line" > < a id = "l01202" name = "l01202" > < / a > < span class = "lineno" > 1202< / span > AddBinaryClauseInternal(candidate[0], candidate[1], < span class = "comment" > /*export_clause=*/< / span > < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a id = "l01203" name = "l01203" > < / a > < span class = "lineno" > 1203< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#af3769ff2cdf469ae4a13cc4f6b15bc14" > Detach< / a > (clause);< / div >
< div class = "line" > < a id = "l01204" name = "l01204" > < / a > < span class = "lineno" > 1204< / span > < / div >
< div class = "line" > < a id = "l01205" name = "l01205" > < / a > < span class = "lineno" > 1205< / span > < span class = "comment" > // This is needed in the corner case where this was the first binary clause< / span > < / div >
< div class = "line" > < a id = "l01206" name = "l01206" > < / a > < span class = "lineno" > 1206< / span > < span class = "comment" > // of the problem so that PropagationIsDone() returns true on the newly< / span > < / div >
< div class = "line" > < a id = "l01207" name = "l01207" > < / a > < span class = "lineno" > 1207< / span > < span class = "comment" > // created BinaryImplicationGraph.< / span > < / div >
< div class = "line" > < a id = "l01208" name = "l01208" > < / a > < span class = "lineno" > 1208< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > FinishPropagation< / a > ();< / div >
< div class = "line" > < a id = "l01209" name = "l01209" > < / a > < span class = "lineno" > 1209< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01210" name = "l01210" > < / a > < span class = "lineno" > 1210< / span > }< / div >
< div class = "line" > < a id = "l01211" name = "l01211" > < / a > < span class = "lineno" > 1211< / span > < / div >
< div class = "line" > < a id = "l01212" name = "l01212" > < / a > < span class = "lineno" > 1212< / span > counters_.minimization_num_removed_literals +=< / div >
< div class = "line" > < a id = "l01213" name = "l01213" > < / a > < span class = "lineno" > 1213< / span > clause-> size() - candidate.size();< / div >
< div class = "line" > < a id = "l01214" name = "l01214" > < / a > < span class = "lineno" > 1214< / span > < / div >
< div class = "line" > < a id = "l01215" name = "l01215" > < / a > < span class = "lineno" > 1215< / span > < span class = "comment" > // TODO(user): If the watched literal didn' t change, we could just rewrite< / span > < / div >
< div class = "line" > < a id = "l01216" name = "l01216" > < / a > < span class = "lineno" > 1216< / span > < span class = "comment" > // the clause while keeping the two watched literals at the beginning.< / span > < / div >
< div class = "line" > < a id = "l01217" name = "l01217" > < / a > < span class = "lineno" > 1217< / span > < span class = "keywordflow" > if< / span > (!clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab17b31190c5ab58a1334139848335283" > InprocessingRewriteClause< / a > (clause, candidate)) {< / div >
< div class = "line" > < a id = "l01218" name = "l01218" > < / a > < span class = "lineno" > 1218< / span > model_is_unsat_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01219" name = "l01219" > < / a > < span class = "lineno" > 1219< / span > }< / div >
< div class = "line" > < a id = "l01220" name = "l01220" > < / a > < span class = "lineno" > 1220< / span > }< / div >
< div class = "line" > < a id = "l01221" name = "l01221" > < / a > < span class = "lineno" > 1221< / span > < / div >
< div class = "line" > < a id = "l01222" name = "l01222" > < / a > < span class = "lineno" > 1222< / span > < a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > SatSolver::SolveInternal(TimeLimit* < a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > ) {< / div >
< div class = "line" > < a id = "l01223" name = "l01223" > < / a > < span class = "lineno" > 1223< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01224" name = "l01224" > < / a > < span class = "lineno" > 1224< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > < a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > INFEASIBLE< / a > ;< / div >
< div class = "line" > < a id = "l01225" name = "l01225" > < / a > < span class = "lineno" > 1225< / span > < / div >
< div class = "line" > < a id = "l01226" name = "l01226" > < / a > < span class = "lineno" > 1226< / span > < span class = "comment" > // TODO(user): Because the counter are not reset to zero, this cause the< / span > < / div >
< div class = "line" > < a id = "l01227" name = "l01227" > < / a > < span class = "lineno" > 1227< / span > < span class = "comment" > // metrics / sec to be completely broken except when the solver is used< / span > < / div >
< div class = "line" > < a id = "l01228" name = "l01228" > < / a > < span class = "lineno" > 1228< / span > < span class = "comment" > // for exactly one Solve().< / span > < / div >
< div class = "line" > < a id = "l01229" name = "l01229" > < / a > < span class = "lineno" > 1229< / span > timer_.< a class = "code hl_function" href = "class_wall_timer.html#a6bdbb9a2345c126ae0d72b1e2a9a21d5" > Restart< / a > ();< / div >
< div class = "line" > < a id = "l01230" name = "l01230" > < / a > < span class = "lineno" > 1230< / span > < / div >
< div class = "line" > < a id = "l01231" name = "l01231" > < / a > < span class = "lineno" > 1231< / span > < span class = "comment" > // Display initial statistics.< / span > < / div >
< div class = "line" > < a id = "l01232" name = "l01232" > < / a > < span class = "lineno" > 1232< / span > < span class = "keywordflow" > if< / span > (logger_-> < a class = "code hl_function" href = "classoperations__research_1_1_solver_logger.html#a9492cb97f5ec0ecbce0b5ef1b085738b" > LoggingIsEnabled< / a > ()) {< / div >
< div class = "line" > < a id = "l01233" name = "l01233" > < / a > < span class = "lineno" > 1233< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Initial memory usage: " < / span > , < a class = "code hl_function" href = "namespaceoperations__research.html#acb92bdbce12d475f965f6db3c5f5b7b5" > MemoryUsage< / a > ());< / div >
< div class = "line" > < a id = "l01234" name = "l01234" > < / a > < span class = "lineno" > 1234< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Number of variables: " < / span > , num_variables_.value());< / div >
< div class = "line" > < a id = "l01235" name = "l01235" > < / a > < span class = "lineno" > 1235< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Number of clauses (size > 2): " < / span > ,< / div >
< div class = "line" > < a id = "l01236" name = "l01236" > < / a > < span class = "lineno" > 1236< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a9e43736bb5ad76519001b5beeb0eac6d" > num_clauses< / a > ());< / div >
< div class = "line" > < a id = "l01237" name = "l01237" > < / a > < span class = "lineno" > 1237< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Number of binary clauses: " < / span > ,< / div >
< div class = "line" > < a id = "l01238" name = "l01238" > < / a > < span class = "lineno" > 1238< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ae9a2f518d6edd64467abcef2c70934ff" > num_implications< / a > ());< / div >
< div class = "line" > < a id = "l01239" name = "l01239" > < / a > < span class = "lineno" > 1239< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Number of linear constraints: " < / span > ,< / div >
< div class = "line" > < a id = "l01240" name = "l01240" > < / a > < span class = "lineno" > 1240< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a18ab319435ed80315e0c35ca40a7c2a0" > NumberOfConstraints< / a > ());< / div >
< div class = "line" > < a id = "l01241" name = "l01241" > < / a > < span class = "lineno" > 1241< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Number of fixed variables: " < / span > , trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ());< / div >
< div class = "line" > < a id = "l01242" name = "l01242" > < / a > < span class = "lineno" > 1242< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Number of watched clauses: " < / span > ,< / div >
< div class = "line" > < a id = "l01243" name = "l01243" > < / a > < span class = "lineno" > 1243< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab6174cc15ef4df301b31aff43216039e" > num_watched_clauses< / a > ());< / div >
< div class = "line" > < a id = "l01244" name = "l01244" > < / a > < span class = "lineno" > 1244< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " Parameters: " < / span > , < a class = "code hl_function" href = "namespaceoperations__research.html#a87d7aa58897e0042898d1c2207deda18" > ProtobufShortDebugString< / a > (*parameters_));< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01245" name = "l01245" > < / a > < span class = "lineno" > 1245< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01246" name = "l01246" > < / a > < span class = "lineno" > 1246< / span > < / div >
< div class = "line" > < a id = "l01247" name = "l01247" > < / a > < span class = "lineno" > 1247< / span > < span class = "comment" > // Used to trigger clause minimization via propagation.< / span > < / div >
< div class = "line" > < a id = "l01248" name = "l01248" > < / a > < span class = "lineno" > 1248< / span > int64_t next_minimization_num_restart =< / div >
< div class = "line" > < a id = "l01249" name = "l01249" > < / a > < span class = "lineno" > 1249< / span > restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#aea2ab8041aa76772ba75a3ca8c2cfd81" > NumRestarts< / a > () +< / div >
< div class = "line" > < a id = "l01250" name = "l01250" > < / a > < span class = "lineno" > 1250< / span > parameters_-> minimize_with_propagation_restart_period();< / div >
< div class = "line" > < a id = "l01251" name = "l01251" > < / a > < span class = "lineno" > 1251< / span > < / div >
< div class = "line" > < a id = "l01252" name = "l01252" > < / a > < span class = "lineno" > 1252< / span > < span class = "comment" > // Variables used to show the search progress.< / span > < / div >
< div class = "line" > < a id = "l01253" name = "l01253" > < / a > < span class = "lineno" > 1253< / span > < span class = "keyword" > const< / span > int64_t kDisplayFrequency = 10000;< / div >
< div class = "line" > < a id = "l01254" name = "l01254" > < / a > < span class = "lineno" > 1254< / span > int64_t next_display = parameters_-> log_search_progress()< / div >
< div class = "line" > < a id = "l01255" name = "l01255" > < / a > < span class = "lineno" > 1255< / span > ? NextMultipleOf(< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > num_failures< / a > (), kDisplayFrequency)< / div >
< div class = "line" > < a id = "l01256" name = "l01256" > < / a > < span class = "lineno" > 1256< / span > : < a class = "code hl_namespace" href = "namespacestd.html" > std< / a > ::numeric_limits< int64_t> ::< a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > ();< / div >
< div class = "line" > < a id = "l01257" name = "l01257" > < / a > < span class = "lineno" > 1257< / span > < / div >
< div class = "line" > < a id = "l01258" name = "l01258" > < / a > < span class = "lineno" > 1258< / span > < span class = "comment" > // Variables used to check the memory limit every kMemoryCheckFrequency.< / span > < / div >
< div class = "line" > < a id = "l01259" name = "l01259" > < / a > < span class = "lineno" > 1259< / span > < span class = "keyword" > const< / span > int64_t kMemoryCheckFrequency = 10000;< / div >
< div class = "line" > < a id = "l01260" name = "l01260" > < / a > < span class = "lineno" > 1260< / span > int64_t next_memory_check =< / div >
< div class = "line" > < a id = "l01261" name = "l01261" > < / a > < span class = "lineno" > 1261< / span > NextMultipleOf(< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > num_failures< / a > (), kMemoryCheckFrequency);< / div >
< div class = "line" > < a id = "l01262" name = "l01262" > < / a > < span class = "lineno" > 1262< / span > < / div >
< div class = "line" > < a id = "l01263" name = "l01263" > < / a > < span class = "lineno" > 1263< / span > < span class = "comment" > // The max_number_of_conflicts is per solve but the counter is for the whole< / span > < / div >
< div class = "line" > < a id = "l01264" name = "l01264" > < / a > < span class = "lineno" > 1264< / span > < span class = "comment" > // solver.< / span > < / div >
< div class = "line" > < a id = "l01265" name = "l01265" > < / a > < span class = "lineno" > 1265< / span > < span class = "keyword" > const< / span > int64_t kFailureLimit =< / div >
< div class = "line" > < a id = "l01266" name = "l01266" > < / a > < span class = "lineno" > 1266< / span > parameters_-> max_number_of_conflicts() ==< / div >
< div class = "line" > < a id = "l01267" name = "l01267" > < / a > < span class = "lineno" > 1267< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< int64_t> ::max< / a > ()< / div >
< div class = "line" > < a id = "l01268" name = "l01268" > < / a > < span class = "lineno" > 1268< / span > ? < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< int64_t> ::max< / a > ()< / div >
< div class = "line" > < a id = "l01269" name = "l01269" > < / a > < span class = "lineno" > 1269< / span > : counters_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > num_failures< / a > + parameters_-> max_number_of_conflicts();< / div >
< div class = "line" > < a id = "l01270" name = "l01270" > < / a > < span class = "lineno" > 1270< / span > < / div >
< div class = "line" > < a id = "l01271" name = "l01271" > < / a > < span class = "lineno" > 1271< / span > < span class = "comment" > // Starts search.< / span > < / div >
< div class = "line" > < a id = "l01272" name = "l01272" > < / a > < span class = "lineno" > 1272< / span > < span class = "keywordflow" > for< / span > (;;) {< / div >
< div class = "line" > < a id = "l01273" name = "l01273" > < / a > < span class = "lineno" > 1273< / span > < span class = "comment" > // Test if a limit is reached.< / span > < / div >
< div class = "line" > < a id = "l01274" name = "l01274" > < / a > < span class = "lineno" > 1274< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01275" name = "l01275" > < / a > < span class = "lineno" > 1275< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a705eddd5baee23097daf34b73e66eae3" > AdvanceDeterministicTime< / a > (< a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > );< / div >
< div class = "line" > < a id = "l01276" name = "l01276" > < / a > < span class = "lineno" > 1276< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > -> LimitReached()) {< / div >
< div class = "line" > < a id = "l01277" name = "l01277" > < / a > < span class = "lineno" > 1277< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " The time limit has been reached. Aborting." < / span > );< / div >
< div class = "line" > < a id = "l01278" name = "l01278" > < / a > < span class = "lineno" > 1278< / span > < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed" > LIMIT_REACHED< / a > );< / div >
< div class = "line" > < a id = "l01279" name = "l01279" > < / a > < span class = "lineno" > 1279< / span > }< / div >
< div class = "line" > < a id = "l01280" name = "l01280" > < / a > < span class = "lineno" > 1280< / span > }< / div >
< div class = "line" > < a id = "l01281" name = "l01281" > < / a > < span class = "lineno" > 1281< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > num_failures< / a > () > = kFailureLimit) {< / div >
< div class = "line" > < a id = "l01282" name = "l01282" > < / a > < span class = "lineno" > 1282< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " The conflict limit has been reached. Aborting." < / span > );< / div >
< div class = "line" > < a id = "l01283" name = "l01283" > < / a > < span class = "lineno" > 1283< / span > < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed" > LIMIT_REACHED< / a > );< / div >
< div class = "line" > < a id = "l01284" name = "l01284" > < / a > < span class = "lineno" > 1284< / span > }< / div >
< div class = "line" > < a id = "l01285" name = "l01285" > < / a > < span class = "lineno" > 1285< / span > < / div >
< div class = "line" > < a id = "l01286" name = "l01286" > < / a > < span class = "lineno" > 1286< / span > < span class = "comment" > // The current memory checking takes time, so we only execute it every< / span > < / div >
< div class = "line" > < a id = "l01287" name = "l01287" > < / a > < span class = "lineno" > 1287< / span > < span class = "comment" > // kMemoryCheckFrequency conflict. We use > = because counters_.num_failures< / span > < / div >
< div class = "line" > < a id = "l01288" name = "l01288" > < / a > < span class = "lineno" > 1288< / span > < span class = "comment" > // may augment by more than one at each iteration.< / span > < / div >
< div class = "line" > < a id = "l01289" name = "l01289" > < / a > < span class = "lineno" > 1289< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01290" name = "l01290" > < / a > < span class = "lineno" > 1290< / span > < span class = "comment" > // TODO(user): Find a better way.< / span > < / div >
< div class = "line" > < a id = "l01291" name = "l01291" > < / a > < span class = "lineno" > 1291< / span > < span class = "keywordflow" > if< / span > (counters_.num_failures > = next_memory_check) {< / div >
< div class = "line" > < a id = "l01292" name = "l01292" > < / a > < span class = "lineno" > 1292< / span > next_memory_check = NextMultipleOf(< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > num_failures< / a > (), kMemoryCheckFrequency);< / div >
< div class = "line" > < a id = "l01293" name = "l01293" > < / a > < span class = "lineno" > 1293< / span > < span class = "keywordflow" > if< / span > (IsMemoryLimitReached()) {< / div >
< div class = "line" > < a id = "l01294" name = "l01294" > < / a > < span class = "lineno" > 1294< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, < span class = "stringliteral" > " The memory limit has been reached. Aborting." < / span > );< / div >
< div class = "line" > < a id = "l01295" name = "l01295" > < / a > < span class = "lineno" > 1295< / span > < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed" > LIMIT_REACHED< / a > );< / div >
< div class = "line" > < a id = "l01296" name = "l01296" > < / a > < span class = "lineno" > 1296< / span > }< / div >
< div class = "line" > < a id = "l01297" name = "l01297" > < / a > < span class = "lineno" > 1297< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01298" name = "l01298" > < / a > < span class = "lineno" > 1298< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01299" name = "l01299" > < / a > < span class = "lineno" > 1299< / span > < span class = "comment" > // Display search progression. We use > = because counters_.num_failures may< / span > < / div >
< div class = "line" > < a id = "l01300" name = "l01300" > < / a > < span class = "lineno" > 1300< / span > < span class = "comment" > // augment by more than one at each iteration.< / span > < / div >
< div class = "line" > < a id = "l01301" name = "l01301" > < / a > < span class = "lineno" > 1301< / span > < span class = "keywordflow" > if< / span > (counters_.num_failures > = next_display) {< / div >
< div class = "line" > < a id = "l01302" name = "l01302" > < / a > < span class = "lineno" > 1302< / span > < a class = "code hl_define" href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > (logger_, RunningStatisticsString());< / div >
< div class = "line" > < a id = "l01303" name = "l01303" > < / a > < span class = "lineno" > 1303< / span > next_display = NextMultipleOf(< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > num_failures< / a > (), kDisplayFrequency);< / div >
< div class = "line" > < a id = "l01304" name = "l01304" > < / a > < span class = "lineno" > 1304< / span > }< / div >
< div class = "line" > < a id = "l01305" name = "l01305" > < / a > < span class = "lineno" > 1305< / span > < / div >
< div class = "line" > < a id = "l01306" name = "l01306" > < / a > < span class = "lineno" > 1306< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > old_level = current_decision_level_;< / div >
< div class = "line" > < a id = "l01307" name = "l01307" > < / a > < span class = "lineno" > 1307< / span > < span class = "keywordflow" > if< / span > (!PropagateAndStopAfterOneConflictResolution()) {< / div >
< div class = "line" > < a id = "l01308" name = "l01308" > < / a > < span class = "lineno" > 1308< / span > < span class = "comment" > // A conflict occurred, continue the loop.< / span > < / div >
< div class = "line" > < a id = "l01309" name = "l01309" > < / a > < span class = "lineno" > 1309< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > INFEASIBLE< / a > );< / div >
< div class = "line" > < a id = "l01310" name = "l01310" > < / a > < span class = "lineno" > 1310< / span > < span class = "keywordflow" > if< / span > (old_level == current_decision_level_) {< / div >
< div class = "line" > < a id = "l01311" name = "l01311" > < / a > < span class = "lineno" > 1311< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (!assumptions_.empty());< / div >
< div class = "line" > < a id = "l01312" name = "l01312" > < / a > < span class = "lineno" > 1312< / span > < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885" > ASSUMPTIONS_UNSAT< / a > );< / div >
< div class = "line" > < a id = "l01313" name = "l01313" > < / a > < span class = "lineno" > 1313< / span > }< / div >
< div class = "line" > < a id = "l01314" name = "l01314" > < / a > < span class = "lineno" > 1314< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01315" name = "l01315" > < / a > < span class = "lineno" > 1315< / span > < span class = "comment" > // We need to reapply any assumptions that are not currently applied.< / span > < / div >
< div class = "line" > < a id = "l01316" name = "l01316" > < / a > < span class = "lineno" > 1316< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad28cbdd5735a0c111a642f39524d969e" > ReapplyAssumptionsIfNeeded< / a > ()) < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5bbe13ebae8aa11a8a4ac1cb01bc66ad" > UnsatStatus< / a > ());< / div >
< div class = "line" > < a id = "l01317" name = "l01317" > < / a > < span class = "lineno" > 1317< / span > < / div >
< div class = "line" > < a id = "l01318" name = "l01318" > < / a > < span class = "lineno" > 1318< / span > < span class = "comment" > // At a leaf?< / span > < / div >
< div class = "line" > < a id = "l01319" name = "l01319" > < / a > < span class = "lineno" > 1319< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > () == num_variables_.value()) {< / div >
< div class = "line" > < a id = "l01320" name = "l01320" > < / a > < span class = "lineno" > 1320< / span > < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1" > FEASIBLE< / a > );< / div >
< div class = "line" > < a id = "l01321" name = "l01321" > < / a > < span class = "lineno" > 1321< / span > }< / div >
< div class = "line" > < a id = "l01322" name = "l01322" > < / a > < span class = "lineno" > 1322< / span > < / div >
< div class = "line" > < a id = "l01323" name = "l01323" > < / a > < span class = "lineno" > 1323< / span > < span class = "keywordflow" > if< / span > (restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#a9a4dbc2c6849f437d4f08288eeffbfed" > ShouldRestart< / a > ()) {< / div >
< div class = "line" > < a id = "l01324" name = "l01324" > < / a > < span class = "lineno" > 1324< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > Backtrack< / a > (assumption_level_);< / div >
< div class = "line" > < a id = "l01325" name = "l01325" > < / a > < span class = "lineno" > 1325< / span > }< / div >
< div class = "line" > < a id = "l01326" name = "l01326" > < / a > < span class = "lineno" > 1326< / span > < / div >
< div class = "line" > < a id = "l01327" name = "l01327" > < / a > < span class = "lineno" > 1327< / span > < span class = "comment" > // Clause minimization using propagation.< / span > < / div >
< div class = "line" > < a id = "l01328" name = "l01328" > < / a > < span class = "lineno" > 1328< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () == 0 & & < / div >
< div class = "line" > < a id = "l01329" name = "l01329" > < / a > < span class = "lineno" > 1329< / span > restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#aea2ab8041aa76772ba75a3ca8c2cfd81" > NumRestarts< / a > () > = next_minimization_num_restart) {< / div >
< div class = "line" > < a id = "l01330" name = "l01330" > < / a > < span class = "lineno" > 1330< / span > next_minimization_num_restart =< / div >
< div class = "line" > < a id = "l01331" name = "l01331" > < / a > < span class = "lineno" > 1331< / span > restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#aea2ab8041aa76772ba75a3ca8c2cfd81" > NumRestarts< / a > () +< / div >
< div class = "line" > < a id = "l01332" name = "l01332" > < / a > < span class = "lineno" > 1332< / span > parameters_-> minimize_with_propagation_restart_period();< / div >
< div class = "line" > < a id = "l01333" name = "l01333" > < / a > < span class = "lineno" > 1333< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8f1f9030283b2fa93b2353ab260ebe1e" > MinimizeSomeClauses< / a > (< / div >
< div class = "line" > < a id = "l01334" name = "l01334" > < / a > < span class = "lineno" > 1334< / span > parameters_-> minimize_with_propagation_num_decisions());< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01335" name = "l01335" > < / a > < span class = "lineno" > 1335< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01336" name = "l01336" > < / a > < span class = "lineno" > 1336< / span > < span class = "comment" > // Corner case: the minimization above being based on propagation may< / span > < / div >
< div class = "line" > < a id = "l01337" name = "l01337" > < / a > < span class = "lineno" > 1337< / span > < span class = "comment" > // fix the remaining variables or prove UNSAT.< / span > < / div >
< div class = "line" > < a id = "l01338" name = "l01338" > < / a > < span class = "lineno" > 1338< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > INFEASIBLE< / a > );< / div >
< div class = "line" > < a id = "l01339" name = "l01339" > < / a > < span class = "lineno" > 1339< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > () == num_variables_.value()) {< / div >
< div class = "line" > < a id = "l01340" name = "l01340" > < / a > < span class = "lineno" > 1340< / span > < span class = "keywordflow" > return< / span > StatusWithLog(< a class = "code hl_enumvalue" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1" > FEASIBLE< / a > );< / div >
< div class = "line" > < a id = "l01341" name = "l01341" > < / a > < span class = "lineno" > 1341< / span > }< / div >
< div class = "line" > < a id = "l01342" name = "l01342" > < / a > < span class = "lineno" > 1342< / span > }< / div >
< div class = "line" > < a id = "l01343" name = "l01343" > < / a > < span class = "lineno" > 1343< / span > < / div >
< div class = "line" > < a id = "l01344" name = "l01344" > < / a > < span class = "lineno" > 1344< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), assumption_level_);< / div >
< div class = "line" > < a id = "l01345" name = "l01345" > < / a > < span class = "lineno" > 1345< / span > EnqueueNewDecision(decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#acf014a334d9412c245c083ce69aa8716" > NextBranch< / a > ());< / div >
< div class = "line" > < a id = "l01346" name = "l01346" > < / a > < span class = "lineno" > 1346< / span > }< / div >
< div class = "line" > < a id = "l01347" name = "l01347" > < / a > < span class = "lineno" > 1347< / span > }< / div >
< div class = "line" > < a id = "l01348" name = "l01348" > < / a > < span class = "lineno" > 1348< / span > }< / div >
< div class = "line" > < a id = "l01349" name = "l01349" > < / a > < span class = "lineno" > 1349< / span > < / div >
< div class = "line" > < a id = "l01350" name = "l01350" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8f1f9030283b2fa93b2353ab260ebe1e" > 1350< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8f1f9030283b2fa93b2353ab260ebe1e" > SatSolver::MinimizeSomeClauses< / a > (< span class = "keywordtype" > int< / span > decisions_budget) {< / div >
< div class = "line" > < a id = "l01351" name = "l01351" > < / a > < span class = "lineno" > 1351< / span > < span class = "comment" > // Tricky: we don' t want TryToMinimizeClause() to delete to_minimize< / span > < / div >
< div class = "line" > < a id = "l01352" name = "l01352" > < / a > < span class = "lineno" > 1352< / span > < span class = "comment" > // while we are processing it.< / span > < / div >
< div class = "line" > < a id = "l01353" name = "l01353" > < / a > < span class = "lineno" > 1353< / span > block_clause_deletion_ = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01354" name = "l01354" > < / a > < span class = "lineno" > 1354< / span > < / div >
< div class = "line" > < a id = "l01355" name = "l01355" > < / a > < span class = "lineno" > 1355< / span > < span class = "keyword" > const< / span > int64_t target_num_branches = counters_.num_branches + decisions_budget;< / div >
< div class = "line" > < a id = "l01356" name = "l01356" > < / a > < span class = "lineno" > 1356< / span > < span class = "keywordflow" > while< / span > (counters_.num_branches < target_num_branches & & < / div >
< div class = "line" > < a id = "l01357" name = "l01357" > < / a > < span class = "lineno" > 1357< / span > (time_limit_ == < span class = "keyword" > nullptr< / span > || !time_limit_-> < a class = "code hl_function" href = "classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca" > LimitReached< / a > ())) {< / div >
< div class = "line" > < a id = "l01358" name = "l01358" > < / a > < span class = "lineno" > 1358< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_clause.html" > SatClause< / a > * to_minimize = clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a32aff14f95e1bfa0ac66cbff8e2f6cb7" > NextClauseToMinimize< / a > ();< / div >
< div class = "line" > < a id = "l01359" name = "l01359" > < / a > < span class = "lineno" > 1359< / span > < span class = "keywordflow" > if< / span > (to_minimize != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01360" name = "l01360" > < / a > < span class = "lineno" > 1360< / span > TryToMinimizeClause(to_minimize);< / div >
< div class = "line" > < a id = "l01361" name = "l01361" > < / a > < span class = "lineno" > 1361< / span > < span class = "keywordflow" > if< / span > (model_is_unsat_) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01362" name = "l01362" > < / a > < span class = "lineno" > 1362< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01363" name = "l01363" > < / a > < span class = "lineno" > 1363< / span > < span class = "keywordflow" > if< / span > (to_minimize == < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01364" name = "l01364" > < / a > < span class = "lineno" > 1364< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < < span class = "stringliteral" > " Minimized all clauses, restarting from first one." < / span > ;< / div >
< div class = "line" > < a id = "l01365" name = "l01365" > < / a > < span class = "lineno" > 1365< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ada4c57ad822069c6c61a93973dc39c4d" > ResetToMinimizeIndex< / a > ();< / div >
< div class = "line" > < a id = "l01366" name = "l01366" > < / a > < span class = "lineno" > 1366< / span > }< / div >
< div class = "line" > < a id = "l01367" name = "l01367" > < / a > < span class = "lineno" > 1367< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01368" name = "l01368" > < / a > < span class = "lineno" > 1368< / span > }< / div >
< div class = "line" > < a id = "l01369" name = "l01369" > < / a > < span class = "lineno" > 1369< / span > }< / div >
< div class = "line" > < a id = "l01370" name = "l01370" > < / a > < span class = "lineno" > 1370< / span > < / div >
< div class = "line" > < a id = "l01371" name = "l01371" > < / a > < span class = "lineno" > 1371< / span > block_clause_deletion_ = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01372" name = "l01372" > < / a > < span class = "lineno" > 1372< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad" > DeleteRemovedClauses< / a > ();< / div >
< div class = "line" > < a id = "l01373" name = "l01373" > < / a > < span class = "lineno" > 1373< / span > }< / div >
< div class = "line" > < a id = "l01374" name = "l01374" > < / a > < span class = "lineno" > 1374< / span > < / div >
< div class = "line" > < a id = "l01375" name = "l01375" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acfbfa9df611cb625ff79785c05784580" > 1375< / a > < / span > std::vector< Literal> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#acfbfa9df611cb625ff79785c05784580" > SatSolver::GetLastIncompatibleDecisions< / a > () {< / div >
< div class = "line" > < a id = "l01376" name = "l01376" > < / a > < span class = "lineno" > 1376< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01377" name = "l01377" > < / a > < span class = "lineno" > 1377< / span > std::vector< Literal> unsat_assumptions;< / div >
< div class = "line" > < a id = "l01378" name = "l01378" > < / a > < span class = "lineno" > 1378< / span > < / div >
< div class = "line" > < a id = "l01379" name = "l01379" > < / a > < span class = "lineno" > 1379< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > ClearAndResize< / a > (num_variables_);< / div >
< div class = "line" > < a id = "l01380" name = "l01380" > < / a > < span class = "lineno" > 1380< / span > < / div >
< div class = "line" > < a id = "l01381" name = "l01381" > < / a > < span class = "lineno" > 1381< / span > < span class = "keywordtype" > int< / span > trail_index = 0;< / div >
< div class = "line" > < a id = "l01382" name = "l01382" > < / a > < span class = "lineno" > 1382< / span > < span class = "keywordtype" > int< / span > num_true = 0;< / div >
< div class = "line" > < a id = "l01383" name = "l01383" > < / a > < span class = "lineno" > 1383< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > lit : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ace3ed18a3fa848ebbe2a2166e273e903" > FailingClause< / a > ()) {< / div >
< div class = "line" > < a id = "l01384" name = "l01384" > < / a > < span class = "lineno" > 1384< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsAssigned(lit));< / div >
< div class = "line" > < a id = "l01385" name = "l01385" > < / a > < span class = "lineno" > 1385< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsTrue(lit)) {< / div >
< div class = "line" > < a id = "l01386" name = "l01386" > < / a > < span class = "lineno" > 1386< / span > < span class = "comment" > // literal at true in the conflict must be decision/assumptions that could< / span > < / div >
< div class = "line" > < a id = "l01387" name = "l01387" > < / a > < span class = "lineno" > 1387< / span > < span class = "comment" > // not be taken.< / span > < / div >
< div class = "line" > < a id = "l01388" name = "l01388" > < / a > < span class = "lineno" > 1388< / span > ++num_true;< / div >
< div class = "line" > < a id = "l01389" name = "l01389" > < / a > < span class = "lineno" > 1389< / span > unsat_assumptions.push_back(lit.Negated());< / div >
< div class = "line" > < a id = "l01390" name = "l01390" > < / a > < span class = "lineno" > 1390< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01391" name = "l01391" > < / a > < span class = "lineno" > 1391< / span > }< / div >
< div class = "line" > < a id = "l01392" name = "l01392" > < / a > < span class = "lineno" > 1392< / span > trail_index =< / div >
< div class = "line" > < a id = "l01393" name = "l01393" > < / a > < span class = "lineno" > 1393< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (trail_index, trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (lit.Variable()).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a0f2d611d5c2d56f60646827438acf3af" > trail_index< / a > );< / div >
< div class = "line" > < a id = "l01394" name = "l01394" > < / a > < span class = "lineno" > 1394< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (lit.Variable());< / div >
< div class = "line" > < a id = "l01395" name = "l01395" > < / a > < span class = "lineno" > 1395< / span > }< / div >
< div class = "line" > < a id = "l01396" name = "l01396" > < / a > < span class = "lineno" > 1396< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c" > CHECK_LE< / a > (num_true, 1);< / div >
< div class = "line" > < a id = "l01397" name = "l01397" > < / a > < span class = "lineno" > 1397< / span > < / div >
< div class = "line" > < a id = "l01398" name = "l01398" > < / a > < span class = "lineno" > 1398< / span > < span class = "comment" > // We just expand the conflict until we only have decisions.< / span > < / div >
< div class = "line" > < a id = "l01399" name = "l01399" > < / a > < span class = "lineno" > 1399< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > limit =< / div >
< div class = "line" > < a id = "l01400" name = "l01400" > < / a > < span class = "lineno" > 1400< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () > 0 ? decisions_[0].trail_index : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l01401" name = "l01401" > < / a > < span class = "lineno" > 1401< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82" > CHECK_LT< / a > (trail_index, trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ());< / div >
< div class = "line" > < a id = "l01402" name = "l01402" > < / a > < span class = "lineno" > 1402< / span > < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
< div class = "line" > < a id = "l01403" name = "l01403" > < / a > < span class = "lineno" > 1403< / span > < span class = "comment" > // Find next marked literal to expand from the trail.< / span > < / div >
< div class = "line" > < a id = "l01404" name = "l01404" > < / a > < span class = "lineno" > 1404< / span > < span class = "keywordflow" > while< / span > (trail_index > = limit & & < / div >
< div class = "line" > < a id = "l01405" name = "l01405" > < / a > < span class = "lineno" > 1405< / span > !is_marked_[(*trail_)[trail_index].Variable()]) {< / div >
< div class = "line" > < a id = "l01406" name = "l01406" > < / a > < span class = "lineno" > 1406< / span > --trail_index;< / div >
< div class = "line" > < a id = "l01407" name = "l01407" > < / a > < span class = "lineno" > 1407< / span > }< / div >
< div class = "line" > < a id = "l01408" name = "l01408" > < / a > < span class = "lineno" > 1408< / span > < span class = "keywordflow" > if< / span > (trail_index < limit) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01409" name = "l01409" > < / a > < span class = "lineno" > 1409< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > marked_literal = (*trail_)[trail_index];< / div >
< div class = "line" > < a id = "l01410" name = "l01410" > < / a > < span class = "lineno" > 1410< / span > --trail_index;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01411" name = "l01411" > < / a > < span class = "lineno" > 1411< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01412" name = "l01412" > < / a > < span class = "lineno" > 1412< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a5ed9d5f5c759afe4a008adaabd80c6f8" > AssignmentType< / a > (marked_literal.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal.html#a6a5dcff82096cd7a7147bf996dbaa5a8" > Variable< / a > ()) ==< / div >
< div class = "line" > < a id = "l01413" name = "l01413" > < / a > < span class = "lineno" > 1413< / span > < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_type.html#a916a0609367bae97bd6788542d4925eb" > AssignmentType::kSearchDecision< / a > ) {< / div >
< div class = "line" > < a id = "l01414" name = "l01414" > < / a > < span class = "lineno" > 1414< / span > unsat_assumptions.push_back(marked_literal);< / div >
< div class = "line" > < a id = "l01415" name = "l01415" > < / a > < span class = "lineno" > 1415< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01416" name = "l01416" > < / a > < span class = "lineno" > 1416< / span > < span class = "comment" > // Marks all the literals of its reason.< / span > < / div >
< div class = "line" > < a id = "l01417" name = "l01417" > < / a > < span class = "lineno" > 1417< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (marked_literal.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal.html#a6a5dcff82096cd7a7147bf996dbaa5a8" > Variable< / a > ())) {< / div >
< div class = "line" > < a id = "l01418" name = "l01418" > < / a > < span class = "lineno" > 1418< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable();< / div >
< div class = "line" > < a id = "l01419" name = "l01419" > < / a > < span class = "lineno" > 1419< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01420" name = "l01420" > < / a > < span class = "lineno" > 1420< / span > < span class = "keywordflow" > if< / span > (level > 0 & & !is_marked_[< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ]) is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01421" name = "l01421" > < / a > < span class = "lineno" > 1421< / span > }< / div >
< div class = "line" > < a id = "l01422" name = "l01422" > < / a > < span class = "lineno" > 1422< / span > }< / div >
< div class = "line" > < a id = "l01423" name = "l01423" > < / a > < span class = "lineno" > 1423< / span > }< / div >
< div class = "line" > < a id = "l01424" name = "l01424" > < / a > < span class = "lineno" > 1424< / span > < / div >
< div class = "line" > < a id = "l01425" name = "l01425" > < / a > < span class = "lineno" > 1425< / span > < span class = "comment" > // We reverse the assumptions so they are in the same order as the one in< / span > < / div >
< div class = "line" > < a id = "l01426" name = "l01426" > < / a > < span class = "lineno" > 1426< / span > < span class = "comment" > // which the decision were made.< / span > < / div >
< div class = "line" > < a id = "l01427" name = "l01427" > < / a > < span class = "lineno" > 1427< / span > std::reverse(unsat_assumptions.begin(), unsat_assumptions.end());< / div >
< div class = "line" > < a id = "l01428" name = "l01428" > < / a > < span class = "lineno" > 1428< / span > < span class = "keywordflow" > return< / span > unsat_assumptions;< / div >
< div class = "line" > < a id = "l01429" name = "l01429" > < / a > < span class = "lineno" > 1429< / span > }< / div >
< div class = "line" > < a id = "l01430" name = "l01430" > < / a > < span class = "lineno" > 1430< / span > < / div >
< div class = "line" > < a id = "l01431" name = "l01431" > < / a > < span class = "lineno" > 1431< / span > < span class = "keywordtype" > void< / span > SatSolver::BumpReasonActivities(< span class = "keyword" > const< / span > std::vector< Literal> & literals) {< / div >
< div class = "line" > < a id = "l01432" name = "l01432" > < / a > < span class = "lineno" > 1432< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01433" name = "l01433" > < / a > < span class = "lineno" > 1433< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : literals) {< / div >
< div class = "line" > < a id = "l01434" name = "l01434" > < / a > < span class = "lineno" > 1434< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable();< / div >
< div class = "line" > < a id = "l01435" name = "l01435" > < / a > < span class = "lineno" > 1435< / span > < span class = "keywordflow" > if< / span > (DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ) > 0) {< / div >
< div class = "line" > < a id = "l01436" name = "l01436" > < / a > < span class = "lineno" > 1436< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_clause.html" > SatClause< / a > * clause = ReasonClauseOrNull(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01437" name = "l01437" > < / a > < span class = "lineno" > 1437< / span > < span class = "keywordflow" > if< / span > (clause != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01438" name = "l01438" > < / a > < span class = "lineno" > 1438< / span > BumpClauseActivity(clause);< / div >
< div class = "line" > < a id = "l01439" name = "l01439" > < / a > < span class = "lineno" > 1439< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01440" name = "l01440" > < / a > < span class = "lineno" > 1440< / span > UpperBoundedLinearConstraint* pb_constraint =< / div >
< div class = "line" > < a id = "l01441" name = "l01441" > < / a > < span class = "lineno" > 1441< / span > ReasonPbConstraintOrNull(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01442" name = "l01442" > < / a > < span class = "lineno" > 1442< / span > < span class = "keywordflow" > if< / span > (pb_constraint != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01443" name = "l01443" > < / a > < span class = "lineno" > 1443< / span > < span class = "comment" > // TODO(user): Because one pb constraint may propagate many literals,< / span > < / div >
< div class = "line" > < a id = "l01444" name = "l01444" > < / a > < span class = "lineno" > 1444< / span > < span class = "comment" > // this may bias the constraint activity... investigate other policy.< / span > < / div >
< div class = "line" > < a id = "l01445" name = "l01445" > < / a > < span class = "lineno" > 1445< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#ae087fb0f8731e64e65fb00e517fe8966" > BumpActivity< / a > (pb_constraint);< / div >
< div class = "line" > < a id = "l01446" name = "l01446" > < / a > < span class = "lineno" > 1446< / span > }< / div >
< div class = "line" > < a id = "l01447" name = "l01447" > < / a > < span class = "lineno" > 1447< / span > }< / div >
< div class = "line" > < a id = "l01448" name = "l01448" > < / a > < span class = "lineno" > 1448< / span > }< / div >
< div class = "line" > < a id = "l01449" name = "l01449" > < / a > < span class = "lineno" > 1449< / span > }< / div >
< div class = "line" > < a id = "l01450" name = "l01450" > < / a > < span class = "lineno" > 1450< / span > }< / div >
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< div class = "line" > < a id = "l01451" name = "l01451" > < / a > < span class = "lineno" > 1451< / span > < / div >
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< div class = "line" > < a id = "l01452" name = "l01452" > < / a > < span class = "lineno" > 1452< / span > < span class = "keywordtype" > void< / span > SatSolver::BumpClauseActivity(SatClause* clause) {< / div >
< div class = "line" > < a id = "l01453" name = "l01453" > < / a > < span class = "lineno" > 1453< / span > < span class = "comment" > // We only bump the activity of the clauses that have some info. So if we know< / span > < / div >
< div class = "line" > < a id = "l01454" name = "l01454" > < / a > < span class = "lineno" > 1454< / span > < span class = "comment" > // that we will keep a clause forever, we don' t need to create its Info. More< / span > < / div >
< div class = "line" > < a id = "l01455" name = "l01455" > < / a > < span class = "lineno" > 1455< / span > < span class = "comment" > // than the speed, this allows to limit as much as possible the activity< / span > < / div >
< div class = "line" > < a id = "l01456" name = "l01456" > < / a > < span class = "lineno" > 1456< / span > < span class = "comment" > // rescaling.< / span > < / div >
< div class = "line" > < a id = "l01457" name = "l01457" > < / a > < span class = "lineno" > 1457< / span > < span class = "keyword" > auto< / span > it = clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > mutable_clauses_info< / a > ()-> find(clause);< / div >
< div class = "line" > < a id = "l01458" name = "l01458" > < / a > < span class = "lineno" > 1458< / span > < span class = "keywordflow" > if< / span > (it == clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > mutable_clauses_info< / a > ()-> end()) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01459" name = "l01459" > < / a > < span class = "lineno" > 1459< / span > < / div >
< div class = "line" > < a id = "l01460" name = "l01460" > < / a > < span class = "lineno" > 1460< / span > < span class = "comment" > // Check if the new clause LBD is below our threshold to keep this clause< / span > < / div >
< div class = "line" > < a id = "l01461" name = "l01461" > < / a > < span class = "lineno" > 1461< / span > < span class = "comment" > // indefinitely. Note that we use a +1 here because the LBD of a newly learned< / span > < / div >
< div class = "line" > < a id = "l01462" name = "l01462" > < / a > < span class = "lineno" > 1462< / span > < span class = "comment" > // clause decrease by 1 just after the backjump.< / span > < / div >
< div class = "line" > < a id = "l01463" name = "l01463" > < / a > < span class = "lineno" > 1463< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > new_lbd = ComputeLbd(*clause);< / div >
< div class = "line" > < a id = "l01464" name = "l01464" > < / a > < span class = "lineno" > 1464< / span > < span class = "keywordflow" > if< / span > (new_lbd + 1 < = parameters_-> clause_cleanup_lbd_bound()) {< / div >
< div class = "line" > < a id = "l01465" name = "l01465" > < / a > < span class = "lineno" > 1465< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > mutable_clauses_info< / a > ()-> erase(clause);< / div >
< div class = "line" > < a id = "l01466" name = "l01466" > < / a > < span class = "lineno" > 1466< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01467" name = "l01467" > < / a > < span class = "lineno" > 1467< / span > }< / div >
< div class = "line" > < a id = "l01468" name = "l01468" > < / a > < span class = "lineno" > 1468< / span > < / div >
< div class = "line" > < a id = "l01469" name = "l01469" > < / a > < span class = "lineno" > 1469< / span > < span class = "comment" > // Eventually protect this clause for the next cleanup phase.< / span > < / div >
< div class = "line" > < a id = "l01470" name = "l01470" > < / a > < span class = "lineno" > 1470< / span > < span class = "keywordflow" > switch< / span > (parameters_-> clause_cleanup_protection()) {< / div >
< div class = "line" > < a id = "l01471" name = "l01471" > < / a > < span class = "lineno" > 1471< / span > < span class = "keywordflow" > case< / span > SatParameters::PROTECTION_NONE:< / div >
< div class = "line" > < a id = "l01472" name = "l01472" > < / a > < span class = "lineno" > 1472< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01473" name = "l01473" > < / a > < span class = "lineno" > 1473< / span > < span class = "keywordflow" > case< / span > SatParameters::PROTECTION_ALWAYS:< / div >
< div class = "line" > < a id = "l01474" name = "l01474" > < / a > < span class = "lineno" > 1474< / span > it-> second.protected_during_next_cleanup = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01475" name = "l01475" > < / a > < span class = "lineno" > 1475< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01476" name = "l01476" > < / a > < span class = "lineno" > 1476< / span > < span class = "keywordflow" > case< / span > SatParameters::PROTECTION_LBD:< / div >
< div class = "line" > < a id = "l01477" name = "l01477" > < / a > < span class = "lineno" > 1477< / span > < span class = "comment" > // This one is similar to the one used by the Glucose SAT solver.< / span > < / div >
< div class = "line" > < a id = "l01478" name = "l01478" > < / a > < span class = "lineno" > 1478< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01479" name = "l01479" > < / a > < span class = "lineno" > 1479< / span > < span class = "comment" > // TODO(user): why the +1? one reason may be that the LBD of a conflict< / span > < / div >
< div class = "line" > < a id = "l01480" name = "l01480" > < / a > < span class = "lineno" > 1480< / span > < span class = "comment" > // decrease by 1 just after the backjump...< / span > < / div >
< div class = "line" > < a id = "l01481" name = "l01481" > < / a > < span class = "lineno" > 1481< / span > < span class = "keywordflow" > if< / span > (new_lbd + 1 < it-> second.lbd) {< / div >
< div class = "line" > < a id = "l01482" name = "l01482" > < / a > < span class = "lineno" > 1482< / span > it-> second.protected_during_next_cleanup = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01483" name = "l01483" > < / a > < span class = "lineno" > 1483< / span > it-> second.lbd = new_lbd;< / div >
< div class = "line" > < a id = "l01484" name = "l01484" > < / a > < span class = "lineno" > 1484< / span > }< / div >
< div class = "line" > < a id = "l01485" name = "l01485" > < / a > < span class = "lineno" > 1485< / span > }< / div >
< div class = "line" > < a id = "l01486" name = "l01486" > < / a > < span class = "lineno" > 1486< / span > < / div >
< div class = "line" > < a id = "l01487" name = "l01487" > < / a > < span class = "lineno" > 1487< / span > < span class = "comment" > // Increase the activity.< / span > < / div >
< div class = "line" > < a id = "l01488" name = "l01488" > < / a > < span class = "lineno" > 1488< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > activity = it-> second.activity += clause_activity_increment_;< / div >
< div class = "line" > < a id = "l01489" name = "l01489" > < / a > < span class = "lineno" > 1489< / span > < span class = "keywordflow" > if< / span > (activity > parameters_-> max_clause_activity_value()) {< / div >
< div class = "line" > < a id = "l01490" name = "l01490" > < / a > < span class = "lineno" > 1490< / span > RescaleClauseActivities(1.0 / parameters_-> max_clause_activity_value());< / div >
< div class = "line" > < a id = "l01491" name = "l01491" > < / a > < span class = "lineno" > 1491< / span > }< / div >
< div class = "line" > < a id = "l01492" name = "l01492" > < / a > < span class = "lineno" > 1492< / span > }< / div >
< div class = "line" > < a id = "l01493" name = "l01493" > < / a > < span class = "lineno" > 1493< / span > < / div >
< div class = "line" > < a id = "l01494" name = "l01494" > < / a > < span class = "lineno" > 1494< / span > < span class = "keywordtype" > void< / span > SatSolver::RescaleClauseActivities(< span class = "keywordtype" > double< / span > scaling_factor) {< / div >
< div class = "line" > < a id = "l01495" name = "l01495" > < / a > < span class = "lineno" > 1495< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01496" name = "l01496" > < / a > < span class = "lineno" > 1496< / span > clause_activity_increment_ *= scaling_factor;< / div >
< div class = "line" > < a id = "l01497" name = "l01497" > < / a > < span class = "lineno" > 1497< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & entry : *clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > mutable_clauses_info< / a > ()) {< / div >
< div class = "line" > < a id = "l01498" name = "l01498" > < / a > < span class = "lineno" > 1498< / span > entry.second.activity *= scaling_factor;< / div >
< div class = "line" > < a id = "l01499" name = "l01499" > < / a > < span class = "lineno" > 1499< / span > }< / div >
< div class = "line" > < a id = "l01500" name = "l01500" > < / a > < span class = "lineno" > 1500< / span > }< / div >
< div class = "line" > < a id = "l01501" name = "l01501" > < / a > < span class = "lineno" > 1501< / span > < / div >
< div class = "line" > < a id = "l01502" name = "l01502" > < / a > < span class = "lineno" > 1502< / span > < span class = "keywordtype" > void< / span > SatSolver::UpdateClauseActivityIncrement() {< / div >
< div class = "line" > < a id = "l01503" name = "l01503" > < / a > < span class = "lineno" > 1503< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01504" name = "l01504" > < / a > < span class = "lineno" > 1504< / span > clause_activity_increment_ *= 1.0 / parameters_-> clause_activity_decay();< / div >
< div class = "line" > < a id = "l01505" name = "l01505" > < / a > < span class = "lineno" > 1505< / span > }< / div >
< div class = "line" > < a id = "l01506" name = "l01506" > < / a > < span class = "lineno" > 1506< / span > < / div >
< div class = "line" > < a id = "l01507" name = "l01507" > < / a > < span class = "lineno" > 1507< / span > < span class = "keywordtype" > bool< / span > SatSolver::IsConflictValid(< span class = "keyword" > const< / span > std::vector< Literal> & literals) {< / div >
< div class = "line" > < a id = "l01508" name = "l01508" > < / a > < span class = "lineno" > 1508< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01509" name = "l01509" > < / a > < span class = "lineno" > 1509< / span > < span class = "keywordflow" > if< / span > (literals.empty()) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01510" name = "l01510" > < / a > < span class = "lineno" > 1510< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > highest_level = DecisionLevel(literals[0].Variable());< / div >
< div class = "line" > < a id = "l01511" name = "l01511" > < / a > < span class = "lineno" > 1511< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < literals.size(); ++i) {< / div >
< div class = "line" > < a id = "l01512" name = "l01512" > < / a > < span class = "lineno" > 1512< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = DecisionLevel(literals[i].Variable());< / div >
< div class = "line" > < a id = "l01513" name = "l01513" > < / a > < span class = "lineno" > 1513< / span > < span class = "keywordflow" > if< / span > (level < = 0 || level > = highest_level) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01514" name = "l01514" > < / a > < span class = "lineno" > 1514< / span > }< / div >
< div class = "line" > < a id = "l01515" name = "l01515" > < / a > < span class = "lineno" > 1515< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01516" name = "l01516" > < / a > < span class = "lineno" > 1516< / span > }< / div >
< div class = "line" > < a id = "l01517" name = "l01517" > < / a > < span class = "lineno" > 1517< / span > < / div >
< div class = "line" > < a id = "l01518" name = "l01518" > < / a > < span class = "lineno" > 1518< / span > < span class = "keywordtype" > int< / span > SatSolver::ComputeBacktrackLevel(< span class = "keyword" > const< / span > std::vector< Literal> & literals) {< / div >
< div class = "line" > < a id = "l01519" name = "l01519" > < / a > < span class = "lineno" > 1519< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01520" name = "l01520" > < / a > < span class = "lineno" > 1520< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a" > DCHECK_GT< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l01521" name = "l01521" > < / a > < span class = "lineno" > 1521< / span > < / div >
< div class = "line" > < a id = "l01522" name = "l01522" > < / a > < span class = "lineno" > 1522< / span > < span class = "comment" > // We want the highest decision level among literals other than the first one.< / span > < / div >
< div class = "line" > < a id = "l01523" name = "l01523" > < / a > < span class = "lineno" > 1523< / span > < span class = "comment" > // Note that this level will always be smaller than that of the first literal.< / span > < / div >
< div class = "line" > < a id = "l01524" name = "l01524" > < / a > < span class = "lineno" > 1524< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01525" name = "l01525" > < / a > < span class = "lineno" > 1525< / span > < span class = "comment" > // Note(user): if the learned clause is of size 1, we backtrack all the way to< / span > < / div >
< div class = "line" > < a id = "l01526" name = "l01526" > < / a > < span class = "lineno" > 1526< / span > < span class = "comment" > // the beginning. It may be possible to follow another behavior, but then the< / span > < / div >
< div class = "line" > < a id = "l01527" name = "l01527" > < / a > < span class = "lineno" > 1527< / span > < span class = "comment" > // code require some special cases in< / span > < / div >
< div class = "line" > < a id = "l01528" name = "l01528" > < / a > < span class = "lineno" > 1528< / span > < span class = "comment" > // AddLearnedClauseAndEnqueueUnitPropagation() to fix the literal and not< / span > < / div >
< div class = "line" > < a id = "l01529" name = "l01529" > < / a > < span class = "lineno" > 1529< / span > < span class = "comment" > // backtrack over it. Also, subsequent propagated variables may not have a< / span > < / div >
< div class = "line" > < a id = "l01530" name = "l01530" > < / a > < span class = "lineno" > 1530< / span > < span class = "comment" > // correct level in this case.< / span > < / div >
< div class = "line" > < a id = "l01531" name = "l01531" > < / a > < span class = "lineno" > 1531< / span > < span class = "keywordtype" > int< / span > backtrack_level = 0;< / div >
< div class = "line" > < a id = "l01532" name = "l01532" > < / a > < span class = "lineno" > 1532< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < literals.size(); ++i) {< / div >
< div class = "line" > < a id = "l01533" name = "l01533" > < / a > < span class = "lineno" > 1533< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = DecisionLevel(literals[i].Variable());< / div >
< div class = "line" > < a id = "l01534" name = "l01534" > < / a > < span class = "lineno" > 1534< / span > backtrack_level = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (backtrack_level, level);< / div >
< div class = "line" > < a id = "l01535" name = "l01535" > < / a > < span class = "lineno" > 1535< / span > }< / div >
< div class = "line" > < a id = "l01536" name = "l01536" > < / a > < span class = "lineno" > 1536< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a" > DCHECK_LT< / a > (backtrack_level, DecisionLevel(literals[0].Variable()));< / div >
< div class = "line" > < a id = "l01537" name = "l01537" > < / a > < span class = "lineno" > 1537< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > (DecisionLevel(literals[0].Variable()), < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ());< / div >
< div class = "line" > < a id = "l01538" name = "l01538" > < / a > < span class = "lineno" > 1538< / span > < span class = "keywordflow" > return< / span > backtrack_level;< / div >
< div class = "line" > < a id = "l01539" name = "l01539" > < / a > < span class = "lineno" > 1539< / span > }< / div >
< div class = "line" > < a id = "l01540" name = "l01540" > < / a > < span class = "lineno" > 1540< / span > < / div >
< div class = "line" > < a id = "l01541" name = "l01541" > < / a > < span class = "lineno" > 1541< / span > < span class = "keyword" > template< / span > < < span class = "keyword" > typename< / span > LiteralList> < / div >
< div class = "line" > < a id = "l01542" name = "l01542" > < / a > < span class = "lineno" > 1542< / span > < span class = "keywordtype" > int< / span > SatSolver::ComputeLbd(< span class = "keyword" > const< / span > LiteralList& literals) {< / div >
< div class = "line" > < a id = "l01543" name = "l01543" > < / a > < span class = "lineno" > 1543< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01544" name = "l01544" > < / a > < span class = "lineno" > 1544< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > limit =< / div >
< div class = "line" > < a id = "l01545" name = "l01545" > < / a > < span class = "lineno" > 1545< / span > parameters_-> count_assumption_levels_in_lbd() ? 0 : assumption_level_;< / div >
< div class = "line" > < a id = "l01546" name = "l01546" > < / a > < span class = "lineno" > 1546< / span > < / div >
< div class = "line" > < a id = "l01547" name = "l01547" > < / a > < span class = "lineno" > 1547< / span > < span class = "comment" > // We know that the first literal is always of the highest level.< / span > < / div >
< div class = "line" > < a id = "l01548" name = "l01548" > < / a > < span class = "lineno" > 1548< / span > is_level_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > ClearAndResize< / a > (< / div >
< div class = "line" > < a id = "l01549" name = "l01549" > < / a > < span class = "lineno" > 1549< / span > SatDecisionLevel(DecisionLevel(literals.begin()-> Variable()) + 1));< / div >
< div class = "line" > < a id = "l01550" name = "l01550" > < / a > < span class = "lineno" > 1550< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : literals) {< / div >
< div class = "line" > < a id = "l01551" name = "l01551" > < / a > < span class = "lineno" > 1551< / span > < span class = "keyword" > const< / span > SatDecisionLevel level(DecisionLevel(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()));< / div >
< div class = "line" > < a id = "l01552" name = "l01552" > < / a > < span class = "lineno" > 1552< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (level, 0);< / div >
< div class = "line" > < a id = "l01553" name = "l01553" > < / a > < span class = "lineno" > 1553< / span > < span class = "keywordflow" > if< / span > (level > limit & & !is_level_marked_[level]) {< / div >
< div class = "line" > < a id = "l01554" name = "l01554" > < / a > < span class = "lineno" > 1554< / span > is_level_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (level);< / div >
< div class = "line" > < a id = "l01555" name = "l01555" > < / a > < span class = "lineno" > 1555< / span > }< / div >
< div class = "line" > < a id = "l01556" name = "l01556" > < / a > < span class = "lineno" > 1556< / span > }< / div >
< div class = "line" > < a id = "l01557" name = "l01557" > < / a > < span class = "lineno" > 1557< / span > < span class = "keywordflow" > return< / span > is_level_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a838e4744903ec12e6ebcf2999f4a90df" > NumberOfSetCallsWithDifferentArguments< / a > ();< / div >
< div class = "line" > < a id = "l01558" name = "l01558" > < / a > < span class = "lineno" > 1558< / span > }< / div >
< div class = "line" > < a id = "l01559" name = "l01559" > < / a > < span class = "lineno" > 1559< / span > < / div >
< div class = "line" > < a id = "l01560" name = "l01560" > < / a > < span class = "lineno" > 1560< / span > std::string SatSolver::StatusString(Status < a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > )< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l01561" name = "l01561" > < / a > < span class = "lineno" > 1561< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > time_in_s = timer_.< a class = "code hl_function" href = "class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84" > Get< / a > ();< / div >
< div class = "line" > < a id = "l01562" name = "l01562" > < / a > < span class = "lineno" > 1562< / span > < span class = "keywordflow" > return< / span > absl::StrFormat(< span class = "stringliteral" > " \n status: %s\n" < / span > , < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a762ee6abbb57f9f730df6033aafdf4fc" > SatStatusString< / a > (< a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > )) +< / div >
< div class = "line" > < a id = "l01563" name = "l01563" > < / a > < span class = "lineno" > 1563< / span > absl::StrFormat(< span class = "stringliteral" > " time: %fs\n" < / span > , time_in_s) +< / div >
< div class = "line" > < a id = "l01564" name = "l01564" > < / a > < span class = "lineno" > 1564< / span > absl::StrFormat(< span class = "stringliteral" > " memory: %s\n" < / span > , < a class = "code hl_function" href = "namespaceoperations__research.html#acb92bdbce12d475f965f6db3c5f5b7b5" > MemoryUsage< / a > ()) +< / div >
< div class = "line" > < a id = "l01565" name = "l01565" > < / a > < span class = "lineno" > 1565< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01566" name = "l01566" > < / a > < span class = "lineno" > 1566< / span > < span class = "stringliteral" > " num failures: %d (%.0f /sec)\n" < / span > , counters_.num_failures,< / div >
< div class = "line" > < a id = "l01567" name = "l01567" > < / a > < span class = "lineno" > 1567< / span > < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > double< / span > < span class = "keyword" > > < / span > (counters_.num_failures) / time_in_s) +< / div >
< div class = "line" > < a id = "l01568" name = "l01568" > < / a > < span class = "lineno" > 1568< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01569" name = "l01569" > < / a > < span class = "lineno" > 1569< / span > < span class = "stringliteral" > " num branches: %d (%.0f /sec)\n" < / span > , counters_.num_branches,< / div >
< div class = "line" > < a id = "l01570" name = "l01570" > < / a > < span class = "lineno" > 1570< / span > < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > double< / span > < span class = "keyword" > > < / span > (counters_.num_branches) / time_in_s) +< / div >
< div class = "line" > < a id = "l01571" name = "l01571" > < / a > < span class = "lineno" > 1571< / span > absl::StrFormat(< span class = "stringliteral" > " num propagations: %d (%.0f /sec)\n" < / span > ,< / div >
< div class = "line" > < a id = "l01572" name = "l01572" > < / a > < span class = "lineno" > 1572< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#abaadd9bf3136af09f2d2ae695439c4fa" > num_propagations< / a > (),< / div >
< div class = "line" > < a id = "l01573" name = "l01573" > < / a > < span class = "lineno" > 1573< / span > < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > double< / span > < span class = "keyword" > > < / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#abaadd9bf3136af09f2d2ae695439c4fa" > num_propagations< / a > ()) / time_in_s) +< / div >
< div class = "line" > < a id = "l01574" name = "l01574" > < / a > < span class = "lineno" > 1574< / span > absl::StrFormat(< span class = "stringliteral" > " num binary propagations: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01575" name = "l01575" > < / a > < span class = "lineno" > 1575< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#abaadd9bf3136af09f2d2ae695439c4fa" > num_propagations< / a > ()) +< / div >
< div class = "line" > < a id = "l01576" name = "l01576" > < / a > < span class = "lineno" > 1576< / span > absl::StrFormat(< span class = "stringliteral" > " num binary inspections: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01577" name = "l01577" > < / a > < span class = "lineno" > 1577< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a869f65709fd34e4f4ed967bab630f707" > num_inspections< / a > ()) +< / div >
< div class = "line" > < a id = "l01578" name = "l01578" > < / a > < span class = "lineno" > 1578< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01579" name = "l01579" > < / a > < span class = "lineno" > 1579< / span > < span class = "stringliteral" > " num binary redundant implications: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01580" name = "l01580" > < / a > < span class = "lineno" > 1580< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a8b070b41da109f3928f19f48d043958d" > num_redundant_implications< / a > ()) +< / div >
< div class = "line" > < a id = "l01581" name = "l01581" > < / a > < span class = "lineno" > 1581< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01582" name = "l01582" > < / a > < span class = "lineno" > 1582< / span > < span class = "stringliteral" > " num classic minimizations: %d" < / span > < / div >
< div class = "line" > < a id = "l01583" name = "l01583" > < / a > < span class = "lineno" > 1583< / span > < span class = "stringliteral" > " (literals removed: %d)\n" < / span > ,< / div >
< div class = "line" > < a id = "l01584" name = "l01584" > < / a > < span class = "lineno" > 1584< / span > counters_.num_minimizations, counters_.num_literals_removed) +< / div >
< div class = "line" > < a id = "l01585" name = "l01585" > < / a > < span class = "lineno" > 1585< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01586" name = "l01586" > < / a > < span class = "lineno" > 1586< / span > < span class = "stringliteral" > " num binary minimizations: %d" < / span > < / div >
< div class = "line" > < a id = "l01587" name = "l01587" > < / a > < span class = "lineno" > 1587< / span > < span class = "stringliteral" > " (literals removed: %d)\n" < / span > ,< / div >
< div class = "line" > < a id = "l01588" name = "l01588" > < / a > < span class = "lineno" > 1588< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ac43fb21cb946317348b377dbdd1589f2" > num_minimization< / a > (),< / div >
< div class = "line" > < a id = "l01589" name = "l01589" > < / a > < span class = "lineno" > 1589< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ab65ae480cf60d2f92e32e6420ba55cdb" > num_literals_removed< / a > ()) +< / div >
< div class = "line" > < a id = "l01590" name = "l01590" > < / a > < span class = "lineno" > 1590< / span > absl::StrFormat(< span class = "stringliteral" > " num inspected clauses: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01591" name = "l01591" > < / a > < span class = "lineno" > 1591< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a70c5a070f03810d5467c5758f6bb916e" > num_inspected_clauses< / a > ()) +< / div >
< div class = "line" > < a id = "l01592" name = "l01592" > < / a > < span class = "lineno" > 1592< / span > absl::StrFormat(< span class = "stringliteral" > " num inspected clause_literals: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01593" name = "l01593" > < / a > < span class = "lineno" > 1593< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ad78bb381916ac421212217a3e5cb03ab" > num_inspected_clause_literals< / a > ()) +< / div >
< div class = "line" > < a id = "l01594" name = "l01594" > < / a > < span class = "lineno" > 1594< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01595" name = "l01595" > < / a > < span class = "lineno" > 1595< / span > < span class = "stringliteral" > " num learned literals: %d (avg: %.1f /clause)\n" < / span > ,< / div >
< div class = "line" > < a id = "l01596" name = "l01596" > < / a > < span class = "lineno" > 1596< / span > counters_.num_literals_learned,< / div >
< div class = "line" > < a id = "l01597" name = "l01597" > < / a > < span class = "lineno" > 1597< / span > 1.0 * counters_.num_literals_learned / counters_.num_failures) +< / div >
< div class = "line" > < a id = "l01598" name = "l01598" > < / a > < span class = "lineno" > 1598< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01599" name = "l01599" > < / a > < span class = "lineno" > 1599< / span > < span class = "stringliteral" > " num learned PB literals: %d (avg: %.1f /clause)\n" < / span > ,< / div >
< div class = "line" > < a id = "l01600" name = "l01600" > < / a > < span class = "lineno" > 1600< / span > counters_.num_learned_pb_literals,< / div >
< div class = "line" > < a id = "l01601" name = "l01601" > < / a > < span class = "lineno" > 1601< / span > 1.0 * counters_.num_learned_pb_literals / counters_.num_failures) +< / div >
< div class = "line" > < a id = "l01602" name = "l01602" > < / a > < span class = "lineno" > 1602< / span > absl::StrFormat(< span class = "stringliteral" > " num subsumed clauses: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01603" name = "l01603" > < / a > < span class = "lineno" > 1603< / span > counters_.num_subsumed_clauses) +< / div >
< div class = "line" > < a id = "l01604" name = "l01604" > < / a > < span class = "lineno" > 1604< / span > absl::StrFormat(< span class = "stringliteral" > " minimization_num_clauses: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01605" name = "l01605" > < / a > < span class = "lineno" > 1605< / span > counters_.minimization_num_clauses) +< / div >
< div class = "line" > < a id = "l01606" name = "l01606" > < / a > < span class = "lineno" > 1606< / span > absl::StrFormat(< span class = "stringliteral" > " minimization_num_decisions: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01607" name = "l01607" > < / a > < span class = "lineno" > 1607< / span > counters_.minimization_num_decisions) +< / div >
< div class = "line" > < a id = "l01608" name = "l01608" > < / a > < span class = "lineno" > 1608< / span > absl::StrFormat(< span class = "stringliteral" > " minimization_num_true: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01609" name = "l01609" > < / a > < span class = "lineno" > 1609< / span > counters_.minimization_num_true) +< / div >
< div class = "line" > < a id = "l01610" name = "l01610" > < / a > < span class = "lineno" > 1610< / span > absl::StrFormat(< span class = "stringliteral" > " minimization_num_subsumed: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01611" name = "l01611" > < / a > < span class = "lineno" > 1611< / span > counters_.minimization_num_subsumed) +< / div >
< div class = "line" > < a id = "l01612" name = "l01612" > < / a > < span class = "lineno" > 1612< / span > absl::StrFormat(< span class = "stringliteral" > " minimization_num_removed_literals: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01613" name = "l01613" > < / a > < span class = "lineno" > 1613< / span > counters_.minimization_num_removed_literals) +< / div >
< div class = "line" > < a id = "l01614" name = "l01614" > < / a > < span class = "lineno" > 1614< / span > absl::StrFormat(< span class = "stringliteral" > " pb num threshold updates: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01615" name = "l01615" > < / a > < span class = "lineno" > 1615< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a944e51f934257c76ec47b94dd37f5468" > num_threshold_updates< / a > ()) +< / div >
< div class = "line" > < a id = "l01616" name = "l01616" > < / a > < span class = "lineno" > 1616< / span > absl::StrFormat(< span class = "stringliteral" > " pb num constraint lookups: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01617" name = "l01617" > < / a > < span class = "lineno" > 1617< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#af33b8aea130f426edbc51d960b1b60c5" > num_constraint_lookups< / a > ()) +< / div >
< div class = "line" > < a id = "l01618" name = "l01618" > < / a > < span class = "lineno" > 1618< / span > absl::StrFormat(< span class = "stringliteral" > " pb num inspected constraint literals: %d\n" < / span > ,< / div >
< div class = "line" > < a id = "l01619" name = "l01619" > < / a > < span class = "lineno" > 1619< / span > pb_constraints_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a5a1f1fc70e04b4d91167a415a45a13ad" > num_inspected_constraint_literals< / a > ()) +< / div >
< div class = "line" > < a id = "l01620" name = "l01620" > < / a > < span class = "lineno" > 1620< / span > restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#a3b30aa3a72ace837ddc29fd371c6e46e" > InfoString< / a > () +< / div >
< div class = "line" > < a id = "l01621" name = "l01621" > < / a > < span class = "lineno" > 1621< / span > absl::StrFormat(< span class = "stringliteral" > " deterministic time: %f\n" < / span > , < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ae525d235b02bcfc962d845e28f5f0125" > deterministic_time< / a > ());< / div >
< div class = "line" > < a id = "l01622" name = "l01622" > < / a > < span class = "lineno" > 1622< / span > }< / div >
< div class = "line" > < a id = "l01623" name = "l01623" > < / a > < span class = "lineno" > 1623< / span > < / div >
< div class = "line" > < a id = "l01624" name = "l01624" > < / a > < span class = "lineno" > 1624< / span > std::string SatSolver::RunningStatisticsString()< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l01625" name = "l01625" > < / a > < span class = "lineno" > 1625< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > time_in_s = timer_.< a class = "code hl_function" href = "class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84" > Get< / a > ();< / div >
< div class = "line" > < a id = "l01626" name = "l01626" > < / a > < span class = "lineno" > 1626< / span > < span class = "keywordflow" > return< / span > absl::StrFormat(< / div >
< div class = "line" > < a id = "l01627" name = "l01627" > < / a > < span class = "lineno" > 1627< / span > < span class = "stringliteral" > " %6.2fs, mem:%s, fails:%d, depth:%d, clauses:%d, tmp:%d, bin:%u, " < / span > < / div >
< div class = "line" > < a id = "l01628" name = "l01628" > < / a > < span class = "lineno" > 1628< / span > < span class = "stringliteral" > " restarts:%d, vars:%d" < / span > ,< / div >
< div class = "line" > < a id = "l01629" name = "l01629" > < / a > < span class = "lineno" > 1629< / span > time_in_s, < a class = "code hl_function" href = "namespaceoperations__research.html#acb92bdbce12d475f965f6db3c5f5b7b5" > MemoryUsage< / a > (), counters_.num_failures, < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (),< / div >
< div class = "line" > < a id = "l01630" name = "l01630" > < / a > < span class = "lineno" > 1630< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a9e43736bb5ad76519001b5beeb0eac6d" > num_clauses< / a > () -< / div >
< div class = "line" > < a id = "l01631" name = "l01631" > < / a > < span class = "lineno" > 1631< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab80681ada3f207791a16617205935937" > num_removable_clauses< / a > (),< / div >
< div class = "line" > < a id = "l01632" name = "l01632" > < / a > < span class = "lineno" > 1632< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab80681ada3f207791a16617205935937" > num_removable_clauses< / a > (),< / div >
< div class = "line" > < a id = "l01633" name = "l01633" > < / a > < span class = "lineno" > 1633< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ae9a2f518d6edd64467abcef2c70934ff" > num_implications< / a > (), restart_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_restart_policy.html#aea2ab8041aa76772ba75a3ca8c2cfd81" > NumRestarts< / a > (),< / div >
< div class = "line" > < a id = "l01634" name = "l01634" > < / a > < span class = "lineno" > 1634< / span > num_variables_.value() - num_processed_fixed_variables_);< / div >
< div class = "line" > < a id = "l01635" name = "l01635" > < / a > < span class = "lineno" > 1635< / span > }< / div >
< div class = "line" > < a id = "l01636" name = "l01636" > < / a > < span class = "lineno" > 1636< / span > < / div >
< div class = "line" > < a id = "l01637" name = "l01637" > < / a > < span class = "lineno" > 1637< / span > < span class = "keywordtype" > void< / span > SatSolver::ProcessNewlyFixedVariablesForDratProof() {< / div >
< div class = "line" > < a id = "l01638" name = "l01638" > < / a > < span class = "lineno" > 1638< / span > < span class = "keywordflow" > if< / span > (drat_proof_handler_ == < span class = "keyword" > nullptr< / span > ) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01639" name = "l01639" > < / a > < span class = "lineno" > 1639< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () != 0) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01640" name = "l01640" > < / a > < span class = "lineno" > 1640< / span > < / div >
< div class = "line" > < a id = "l01641" name = "l01641" > < / a > < span class = "lineno" > 1641< / span > < span class = "comment" > // We need to output the literals that are fixed so we can remove all< / span > < / div >
< div class = "line" > < a id = "l01642" name = "l01642" > < / a > < span class = "lineno" > 1642< / span > < span class = "comment" > // clauses that contains them. Note that this doesn' t seems to be needed< / span > < / div >
< div class = "line" > < a id = "l01643" name = "l01643" > < / a > < span class = "lineno" > 1643< / span > < span class = "comment" > // for drat-trim.< / span > < / div >
< div class = "line" > < a id = "l01644" name = "l01644" > < / a > < span class = "lineno" > 1644< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01645" name = "l01645" > < / a > < span class = "lineno" > 1645< / span > < span class = "comment" > // TODO(user): Ideally we could output such literal as soon as they are fixed,< / span > < / div >
< div class = "line" > < a id = "l01646" name = "l01646" > < / a > < span class = "lineno" > 1646< / span > < span class = "comment" > // but this is not that easy to do. Spend some time to find a cleaner< / span > < / div >
< div class = "line" > < a id = "l01647" name = "l01647" > < / a > < span class = "lineno" > 1647< / span > < span class = "comment" > // alternative? Currently this works, but:< / span > < / div >
< div class = "line" > < a id = "l01648" name = "l01648" > < / a > < span class = "lineno" > 1648< / span > < span class = "comment" > // - We will output some fixed literals twice since we already output learnt< / span > < / div >
< div class = "line" > < a id = "l01649" name = "l01649" > < / a > < span class = "lineno" > 1649< / span > < span class = "comment" > // clauses of size one.< / span > < / div >
< div class = "line" > < a id = "l01650" name = "l01650" > < / a > < span class = "lineno" > 1650< / span > < span class = "comment" > // - We need to call this function when needed.< / span > < / div >
< div class = "line" > < a id = "l01651" name = "l01651" > < / a > < span class = "lineno" > 1651< / span > Literal temp;< / div >
< div class = "line" > < a id = "l01652" name = "l01652" > < / a > < span class = "lineno" > 1652< / span > < span class = "keywordflow" > for< / span > (; drat_num_processed_fixed_variables_ < trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l01653" name = "l01653" > < / a > < span class = "lineno" > 1653< / span > ++drat_num_processed_fixed_variables_) {< / div >
< div class = "line" > < a id = "l01654" name = "l01654" > < / a > < span class = "lineno" > 1654< / span > temp = (*trail_)[drat_num_processed_fixed_variables_];< / div >
< div class = "line" > < a id = "l01655" name = "l01655" > < / a > < span class = "lineno" > 1655< / span > drat_proof_handler_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a98bacf41c50979896b4a5f5e41fb0ccf" > AddClause< / a > ({& temp, 1});< / div >
< div class = "line" > < a id = "l01656" name = "l01656" > < / a > < span class = "lineno" > 1656< / span > }< / div >
< div class = "line" > < a id = "l01657" name = "l01657" > < / a > < span class = "lineno" > 1657< / span > }< / div >
< div class = "line" > < a id = "l01658" name = "l01658" > < / a > < span class = "lineno" > 1658< / span > < / div >
< div class = "line" > < a id = "l01659" name = "l01659" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2aafb0d6bd7d95f183e87866d0ade374" > 1659< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2aafb0d6bd7d95f183e87866d0ade374" > SatSolver::ProcessNewlyFixedVariables< / a > () {< / div >
< div class = "line" > < a id = "l01660" name = "l01660" > < / a > < span class = "lineno" > 1660< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01661" name = "l01661" > < / a > < span class = "lineno" > 1661< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > (), 0);< / div >
< div class = "line" > < a id = "l01662" name = "l01662" > < / a > < span class = "lineno" > 1662< / span > < span class = "keywordtype" > int< / span > num_detached_clauses = 0;< / div >
< div class = "line" > < a id = "l01663" name = "l01663" > < / a > < span class = "lineno" > 1663< / span > < span class = "keywordtype" > int< / span > num_binary = 0;< / div >
< div class = "line" > < a id = "l01664" name = "l01664" > < / a > < span class = "lineno" > 1664< / span > < / div >
< div class = "line" > < a id = "l01665" name = "l01665" > < / a > < span class = "lineno" > 1665< / span > ProcessNewlyFixedVariablesForDratProof();< / div >
< div class = "line" > < a id = "l01666" name = "l01666" > < / a > < span class = "lineno" > 1666< / span > < / div >
< div class = "line" > < a id = "l01667" name = "l01667" > < / a > < span class = "lineno" > 1667< / span > < span class = "comment" > // We remove the clauses that are always true and the fixed literals from the< / span > < / div >
< div class = "line" > < a id = "l01668" name = "l01668" > < / a > < span class = "lineno" > 1668< / span > < span class = "comment" > // others. Note that none of the clause should be all false because we should< / span > < / div >
< div class = "line" > < a id = "l01669" name = "l01669" > < / a > < span class = "lineno" > 1669< / span > < span class = "comment" > // have detected a conflict before this is called.< / span > < / div >
< div class = "line" > < a id = "l01670" name = "l01670" > < / a > < span class = "lineno" > 1670< / span > < span class = "keywordflow" > for< / span > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_clause.html" > SatClause< / a > * clause : clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#abe425f3287da97e7ffaa8c9dfb3dcefe" > AllClausesInCreationOrder< / a > ()) {< / div >
< div class = "line" > < a id = "l01671" name = "l01671" > < / a > < span class = "lineno" > 1671< / span > < span class = "keywordflow" > if< / span > (!clause-> IsAttached()) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01672" name = "l01672" > < / a > < span class = "lineno" > 1672< / span > < / div >
< div class = "line" > < a id = "l01673" name = "l01673" > < / a > < span class = "lineno" > 1673< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > old_size = clause-> size();< / div >
< div class = "line" > < a id = "l01674" name = "l01674" > < / a > < span class = "lineno" > 1674< / span > < span class = "keywordflow" > if< / span > (clause-> RemoveFixedLiteralsAndTestIfTrue(trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ())) {< / div >
< div class = "line" > < a id = "l01675" name = "l01675" > < / a > < span class = "lineno" > 1675< / span > < span class = "comment" > // The clause is always true, detach it.< / span > < / div >
< div class = "line" > < a id = "l01676" name = "l01676" > < / a > < span class = "lineno" > 1676< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab6bd51395bef8b42ac66ad9b52635084" > LazyDetach< / a > (clause);< / div >
< div class = "line" > < a id = "l01677" name = "l01677" > < / a > < span class = "lineno" > 1677< / span > ++num_detached_clauses;< / div >
< div class = "line" > < a id = "l01678" name = "l01678" > < / a > < span class = "lineno" > 1678< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01679" name = "l01679" > < / a > < span class = "lineno" > 1679< / span > }< / div >
< div class = "line" > < a id = "l01680" name = "l01680" > < / a > < span class = "lineno" > 1680< / span > < / div >
< div class = "line" > < a id = "l01681" name = "l01681" > < / a > < span class = "lineno" > 1681< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > size_t< / span > new_size = clause-> size();< / div >
< div class = "line" > < a id = "l01682" name = "l01682" > < / a > < span class = "lineno" > 1682< / span > < span class = "keywordflow" > if< / span > (new_size == old_size) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01683" name = "l01683" > < / a > < span class = "lineno" > 1683< / span > < / div >
< div class = "line" > < a id = "l01684" name = "l01684" > < / a > < span class = "lineno" > 1684< / span > < span class = "keywordflow" > if< / span > (drat_proof_handler_ != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01685" name = "l01685" > < / a > < span class = "lineno" > 1685< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6" > CHECK_GT< / a > (new_size, 0);< / div >
< div class = "line" > < a id = "l01686" name = "l01686" > < / a > < span class = "lineno" > 1686< / span > drat_proof_handler_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a98bacf41c50979896b4a5f5e41fb0ccf" > AddClause< / a > ({clause-> begin(), new_size});< / div >
< div class = "line" > < a id = "l01687" name = "l01687" > < / a > < span class = "lineno" > 1687< / span > drat_proof_handler_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a18349231154d0f5eaee94fe213f347e6" > DeleteClause< / a > ({clause-> begin(), old_size});< / div >
< div class = "line" > < a id = "l01688" name = "l01688" > < / a > < span class = "lineno" > 1688< / span > }< / div >
< div class = "line" > < a id = "l01689" name = "l01689" > < / a > < span class = "lineno" > 1689< / span > < / div >
< div class = "line" > < a id = "l01690" name = "l01690" > < / a > < span class = "lineno" > 1690< / span > < span class = "keywordflow" > if< / span > (new_size == 2) {< / div >
< div class = "line" > < a id = "l01691" name = "l01691" > < / a > < span class = "lineno" > 1691< / span > < span class = "comment" > // This clause is now a binary clause, treat it separately. Note that< / span > < / div >
< div class = "line" > < a id = "l01692" name = "l01692" > < / a > < span class = "lineno" > 1692< / span > < span class = "comment" > // it is safe to do that because this clause can' t be used as a reason< / span > < / div >
< div class = "line" > < a id = "l01693" name = "l01693" > < / a > < span class = "lineno" > 1693< / span > < span class = "comment" > // since we are at level zero and the clause is not satisfied.< / span > < / div >
< div class = "line" > < a id = "l01694" name = "l01694" > < / a > < span class = "lineno" > 1694< / span > AddBinaryClauseInternal(clause-> FirstLiteral(), clause-> SecondLiteral(),< / div >
< div class = "line" > < a id = "l01695" name = "l01695" > < / a > < span class = "lineno" > 1695< / span > < span class = "comment" > /*export_clause=*/< / span > < span class = "keyword" > true< / span > );< / div >
< div class = "line" > < a id = "l01696" name = "l01696" > < / a > < span class = "lineno" > 1696< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab6bd51395bef8b42ac66ad9b52635084" > LazyDetach< / a > (clause);< / div >
< div class = "line" > < a id = "l01697" name = "l01697" > < / a > < span class = "lineno" > 1697< / span > ++num_binary;< / div >
< div class = "line" > < a id = "l01698" name = "l01698" > < / a > < span class = "lineno" > 1698< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01699" name = "l01699" > < / a > < span class = "lineno" > 1699< / span > }< / div >
< div class = "line" > < a id = "l01700" name = "l01700" > < / a > < span class = "lineno" > 1700< / span > }< / div >
< div class = "line" > < a id = "l01701" name = "l01701" > < / a > < span class = "lineno" > 1701< / span > < / div >
< div class = "line" > < a id = "l01702" name = "l01702" > < / a > < span class = "lineno" > 1702< / span > < span class = "comment" > // Note that we will only delete the clauses during the next database cleanup.< / span > < / div >
< div class = "line" > < a id = "l01703" name = "l01703" > < / a > < span class = "lineno" > 1703< / span > clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ae57f3c4e72eb63a34fa09e707a18e6d3" > CleanUpWatchers< / a > ();< / div >
< div class = "line" > < a id = "l01704" name = "l01704" > < / a > < span class = "lineno" > 1704< / span > < span class = "keywordflow" > if< / span > (num_detached_clauses > 0 || num_binary > 0) {< / div >
< div class = "line" > < a id = "l01705" name = "l01705" > < / a > < span class = "lineno" > 1705< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > () < < < span class = "stringliteral" > " fixed variables at level 0. " < / span > < / div >
< div class = "line" > < a id = "l01706" name = "l01706" > < / a > < span class = "lineno" > 1706< / span > < < < span class = "stringliteral" > " Detached " < / span > < < num_detached_clauses < < < span class = "stringliteral" > " clauses. " < / span > < < num_binary< / div >
< div class = "line" > < a id = "l01707" name = "l01707" > < / a > < span class = "lineno" > 1707< / span > < < < span class = "stringliteral" > " converted to binary." < / span > ;< / div >
< div class = "line" > < a id = "l01708" name = "l01708" > < / a > < span class = "lineno" > 1708< / span > }< / div >
< div class = "line" > < a id = "l01709" name = "l01709" > < / a > < span class = "lineno" > 1709< / span > < / div >
< div class = "line" > < a id = "l01710" name = "l01710" > < / a > < span class = "lineno" > 1710< / span > < span class = "comment" > // We also clean the binary implication graph.< / span > < / div >
< div class = "line" > < a id = "l01711" name = "l01711" > < / a > < span class = "lineno" > 1711< / span > < span class = "comment" > // Tricky: If we added the first binary clauses above, the binary graph< / span > < / div >
< div class = "line" > < a id = "l01712" name = "l01712" > < / a > < span class = "lineno" > 1712< / span > < span class = "comment" > // is not in " propagated" state as it should be, so we call Propagate() so< / span > < / div >
< div class = "line" > < a id = "l01713" name = "l01713" > < / a > < span class = "lineno" > 1713< / span > < span class = "comment" > // all the checks are happy.< / span > < / div >
< div class = "line" > < a id = "l01714" name = "l01714" > < / a > < span class = "lineno" > 1714< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a1f591be5334541874ba049873235f0a9" > Propagate< / a > (trail_));< / div >
< div class = "line" > < a id = "l01715" name = "l01715" > < / a > < span class = "lineno" > 1715< / span > binary_implication_graph_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#abcad56047cef75a12528fe99794a6e1e" > RemoveFixedVariables< / a > ();< / div >
< div class = "line" > < a id = "l01716" name = "l01716" > < / a > < span class = "lineno" > 1716< / span > num_processed_fixed_variables_ = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l01717" name = "l01717" > < / a > < span class = "lineno" > 1717< / span > deterministic_time_of_last_fixed_variables_cleanup_ = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ae525d235b02bcfc962d845e28f5f0125" > deterministic_time< / a > ();< / div >
< div class = "line" > < a id = "l01718" name = "l01718" > < / a > < span class = "lineno" > 1718< / span > }< / div >
< div class = "line" > < a id = "l01719" name = "l01719" > < / a > < span class = "lineno" > 1719< / span > < / div >
< div class = "line" > < a id = "l01720" name = "l01720" > < / a > < span class = "lineno" > 1720< / span > < span class = "keywordtype" > bool< / span > SatSolver::PropagationIsDone()< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l01721" name = "l01721" > < / a > < span class = "lineno" > 1721< / span > < span class = "keywordflow" > for< / span > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_propagator.html" > SatPropagator< / a > * propagator : propagators_) {< / div >
< div class = "line" > < a id = "l01722" name = "l01722" > < / a > < span class = "lineno" > 1722< / span > < span class = "keywordflow" > if< / span > (propagator-> IsEmpty()) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01723" name = "l01723" > < / a > < span class = "lineno" > 1723< / span > < span class = "keywordflow" > if< / span > (!propagator-> PropagationIsDone(*trail_)) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01724" name = "l01724" > < / a > < span class = "lineno" > 1724< / span > }< / div >
< div class = "line" > < a id = "l01725" name = "l01725" > < / a > < span class = "lineno" > 1725< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01726" name = "l01726" > < / a > < span class = "lineno" > 1726< / span > }< / div >
< div class = "line" > < a id = "l01727" name = "l01727" > < / a > < span class = "lineno" > 1727< / span > < / div >
< div class = "line" > < a id = "l01728" name = "l01728" > < / a > < span class = "lineno" > 1728< / span > < span class = "comment" > // TODO(user): Support propagating only the " first" propagators. That can< / span > < / div >
< div class = "line" > < a id = "l01729" name = "l01729" > < / a > < span class = "lineno" > 1729< / span > < span class = "comment" > // be useful for probing/in-processing, so we can control if we do only the SAT< / span > < / div >
< div class = "line" > < a id = "l01730" name = "l01730" > < / a > < span class = "lineno" > 1730< / span > < span class = "comment" > // part or the full integer part...< / span > < / div >
< div class = "line" > < a id = "l01731" name = "l01731" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > 1731< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > SatSolver::Propagate< / a > () {< / div >
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< div class = "line" > < a id = "l01732" name = "l01732" > < / a > < span class = "lineno" > 1732< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
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< div class = "line" > < a id = "l01733" name = "l01733" > < / a > < span class = "lineno" > 1733< / span > < / div >
< div class = "line" > < a id = "l01734" name = "l01734" > < / a > < span class = "lineno" > 1734< / span > < span class = "comment" > // Because we might potentially iterate often on this list below, we remove< / span > < / div >
< div class = "line" > < a id = "l01735" name = "l01735" > < / a > < span class = "lineno" > 1735< / span > < span class = "comment" > // empty propagators.< / span > < / div >
< div class = "line" > < a id = "l01736" name = "l01736" > < / a > < span class = "lineno" > 1736< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01737" name = "l01737" > < / a > < span class = "lineno" > 1737< / span > < span class = "comment" > // TODO(user): This might not really be needed.< / span > < / div >
< div class = "line" > < a id = "l01738" name = "l01738" > < / a > < span class = "lineno" > 1738< / span > non_empty_propagators_.clear();< / div >
< div class = "line" > < a id = "l01739" name = "l01739" > < / a > < span class = "lineno" > 1739< / span > < span class = "keywordflow" > for< / span > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_propagator.html" > SatPropagator< / a > * propagator : propagators_) {< / div >
< div class = "line" > < a id = "l01740" name = "l01740" > < / a > < span class = "lineno" > 1740< / span > < span class = "keywordflow" > if< / span > (!propagator-> IsEmpty()) {< / div >
< div class = "line" > < a id = "l01741" name = "l01741" > < / a > < span class = "lineno" > 1741< / span > non_empty_propagators_.push_back(propagator);< / div >
< div class = "line" > < a id = "l01742" name = "l01742" > < / a > < span class = "lineno" > 1742< / span > }< / div >
< div class = "line" > < a id = "l01743" name = "l01743" > < / a > < span class = "lineno" > 1743< / span > }< / div >
< div class = "line" > < a id = "l01744" name = "l01744" > < / a > < span class = "lineno" > 1744< / span > < / div >
< div class = "line" > < a id = "l01745" name = "l01745" > < / a > < span class = "lineno" > 1745< / span > < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
< div class = "line" > < a id = "l01746" name = "l01746" > < / a > < span class = "lineno" > 1746< / span > < span class = "comment" > // The idea here is to abort the inspection as soon as at least one< / span > < / div >
< div class = "line" > < a id = "l01747" name = "l01747" > < / a > < span class = "lineno" > 1747< / span > < span class = "comment" > // propagation occurs so we can loop over and test again the highest< / span > < / div >
< div class = "line" > < a id = "l01748" name = "l01748" > < / a > < span class = "lineno" > 1748< / span > < span class = "comment" > // priority constraint types using the new information.< / span > < / div >
< div class = "line" > < a id = "l01749" name = "l01749" > < / a > < span class = "lineno" > 1749< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01750" name = "l01750" > < / a > < span class = "lineno" > 1750< / span > < span class = "comment" > // Note that the first propagators_ should be the binary_implication_graph_< / span > < / div >
< div class = "line" > < a id = "l01751" name = "l01751" > < / a > < span class = "lineno" > 1751< / span > < span class = "comment" > // and that its Propagate() functions will not abort on the first< / span > < / div >
< div class = "line" > < a id = "l01752" name = "l01752" > < / a > < span class = "lineno" > 1752< / span > < span class = "comment" > // propagation to be slightly more efficient.< / span > < / div >
< div class = "line" > < a id = "l01753" name = "l01753" > < / a > < span class = "lineno" > 1753< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > old_index = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l01754" name = "l01754" > < / a > < span class = "lineno" > 1754< / span > < span class = "keywordflow" > for< / span > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_propagator.html" > SatPropagator< / a > * propagator : non_empty_propagators_) {< / div >
< div class = "line" > < a id = "l01755" name = "l01755" > < / a > < span class = "lineno" > 1755< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (propagator-> PropagatePreconditionsAreSatisfied(*trail_));< / div >
< div class = "line" > < a id = "l01756" name = "l01756" > < / a > < span class = "lineno" > 1756< / span > < span class = "keywordflow" > if< / span > (!propagator-> Propagate(trail_)) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01757" name = "l01757" > < / a > < span class = "lineno" > 1757< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > () > old_index) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01758" name = "l01758" > < / a > < span class = "lineno" > 1758< / span > }< / div >
< div class = "line" > < a id = "l01759" name = "l01759" > < / a > < span class = "lineno" > 1759< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > () == old_index) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01760" name = "l01760" > < / a > < span class = "lineno" > 1760< / span > }< / div >
< div class = "line" > < a id = "l01761" name = "l01761" > < / a > < span class = "lineno" > 1761< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01762" name = "l01762" > < / a > < span class = "lineno" > 1762< / span > }< / div >
< div class = "line" > < a id = "l01763" name = "l01763" > < / a > < span class = "lineno" > 1763< / span > < / div >
< div class = "line" > < a id = "l01764" name = "l01764" > < / a > < span class = "lineno" > 1764< / span > < span class = "keywordtype" > void< / span > SatSolver::InitializePropagators() {< / div >
< div class = "line" > < a id = "l01765" name = "l01765" > < / a > < span class = "lineno" > 1765< / span > propagators_.clear();< / div >
< div class = "line" > < a id = "l01766" name = "l01766" > < / a > < span class = "lineno" > 1766< / span > propagators_.push_back(binary_implication_graph_);< / div >
< div class = "line" > < a id = "l01767" name = "l01767" > < / a > < span class = "lineno" > 1767< / span > propagators_.push_back(clauses_propagator_);< / div >
< div class = "line" > < a id = "l01768" name = "l01768" > < / a > < span class = "lineno" > 1768< / span > propagators_.push_back(pb_constraints_);< / div >
< div class = "line" > < a id = "l01769" name = "l01769" > < / a > < span class = "lineno" > 1769< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < external_propagators_.size(); ++i) {< / div >
< div class = "line" > < a id = "l01770" name = "l01770" > < / a > < span class = "lineno" > 1770< / span > propagators_.push_back(external_propagators_[i]);< / div >
< div class = "line" > < a id = "l01771" name = "l01771" > < / a > < span class = "lineno" > 1771< / span > }< / div >
< div class = "line" > < a id = "l01772" name = "l01772" > < / a > < span class = "lineno" > 1772< / span > < span class = "keywordflow" > if< / span > (last_propagator_ != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01773" name = "l01773" > < / a > < span class = "lineno" > 1773< / span > propagators_.push_back(last_propagator_);< / div >
< div class = "line" > < a id = "l01774" name = "l01774" > < / a > < span class = "lineno" > 1774< / span > }< / div >
< div class = "line" > < a id = "l01775" name = "l01775" > < / a > < span class = "lineno" > 1775< / span > }< / div >
< div class = "line" > < a id = "l01776" name = "l01776" > < / a > < span class = "lineno" > 1776< / span > < / div >
< div class = "line" > < a id = "l01777" name = "l01777" > < / a > < span class = "lineno" > 1777< / span > < span class = "keywordtype" > bool< / span > SatSolver::ResolvePBConflict(BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ,< / div >
< div class = "line" > < a id = "l01778" name = "l01778" > < / a > < span class = "lineno" > 1778< / span > MutableUpperBoundedLinearConstraint* conflict,< / div >
< div class = "line" > < a id = "l01779" name = "l01779" > < / a > < span class = "lineno" > 1779< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > * slack) {< / div >
< div class = "line" > < a id = "l01780" name = "l01780" > < / a > < span class = "lineno" > 1780< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > trail_index = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a0f2d611d5c2d56f60646827438acf3af" > trail_index< / a > ;< / div >
< div class = "line" > < a id = "l01781" name = "l01781" > < / a > < span class = "lineno" > 1781< / span > < / div >
< div class = "line" > < a id = "l01782" name = "l01782" > < / a > < span class = "lineno" > 1782< / span > < span class = "comment" > // This is the slack of the conflict < trail_index< / span > < / div >
< div class = "line" > < a id = "l01783" name = "l01783" > < / a > < span class = "lineno" > 1783< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (*slack, conflict-> ComputeSlackForTrailPrefix(*trail_, trail_index));< / div >
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< div class = "line" > < a id = "l01784" name = "l01784" > < / a > < span class = "lineno" > 1784< / span > < / div >
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< div class = "line" > < a id = "l01785" name = "l01785" > < / a > < span class = "lineno" > 1785< / span > < span class = "comment" > // Pseudo-Boolean case.< / span > < / div >
< div class = "line" > < a id = "l01786" name = "l01786" > < / a > < span class = "lineno" > 1786< / span > UpperBoundedLinearConstraint* pb_reason = ReasonPbConstraintOrNull(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01787" name = "l01787" > < / a > < span class = "lineno" > 1787< / span > < span class = "keywordflow" > if< / span > (pb_reason != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01788" name = "l01788" > < / a > < span class = "lineno" > 1788< / span > pb_reason-> ResolvePBConflict(*trail_, < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > , conflict, slack);< / div >
< div class = "line" > < a id = "l01789" name = "l01789" > < / a > < span class = "lineno" > 1789< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01790" name = "l01790" > < / a > < span class = "lineno" > 1790< / span > }< / div >
< div class = "line" > < a id = "l01791" name = "l01791" > < / a > < span class = "lineno" > 1791< / span > < / div >
< div class = "line" > < a id = "l01792" name = "l01792" > < / a > < span class = "lineno" > 1792< / span > < span class = "comment" > // Generic clause case.< / span > < / div >
< div class = "line" > < a id = "l01793" name = "l01793" > < / a > < span class = "lineno" > 1793< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > multiplier(1);< / div >
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< div class = "line" > < a id = "l01794" name = "l01794" > < / a > < span class = "lineno" > 1794< / span > < / div >
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< div class = "line" > < a id = "l01795" name = "l01795" > < / a > < span class = "lineno" > 1795< / span > < span class = "comment" > // TODO(user): experiment and choose the " best" algo.< / span > < / div >
< div class = "line" > < a id = "l01796" name = "l01796" > < / a > < span class = "lineno" > 1796< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > algorithm = 1;< / div >
< div class = "line" > < a id = "l01797" name = "l01797" > < / a > < span class = "lineno" > 1797< / span > < span class = "keywordflow" > switch< / span > (algorithm) {< / div >
< div class = "line" > < a id = "l01798" name = "l01798" > < / a > < span class = "lineno" > 1798< / span > < span class = "keywordflow" > case< / span > 1:< / div >
< div class = "line" > < a id = "l01799" name = "l01799" > < / a > < span class = "lineno" > 1799< / span > < span class = "comment" > // We reduce the conflict slack to 0 before adding the clause.< / span > < / div >
< div class = "line" > < a id = "l01800" name = "l01800" > < / a > < span class = "lineno" > 1800< / span > < span class = "comment" > // The advantage of this method is that the coefficients stay small.< / span > < / div >
< div class = "line" > < a id = "l01801" name = "l01801" > < / a > < span class = "lineno" > 1801< / span > conflict-> ReduceSlackTo(*trail_, trail_index, *slack, < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > (0));< / div >
< div class = "line" > < a id = "l01802" name = "l01802" > < / a > < span class = "lineno" > 1802< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01803" name = "l01803" > < / a > < span class = "lineno" > 1803< / span > < span class = "keywordflow" > case< / span > 2:< / div >
< div class = "line" > < a id = "l01804" name = "l01804" > < / a > < span class = "lineno" > 1804< / span > < span class = "comment" > // No reduction, we add the lower possible multiple.< / span > < / div >
< div class = "line" > < a id = "l01805" name = "l01805" > < / a > < span class = "lineno" > 1805< / span > multiplier = *slack + 1;< / div >
< div class = "line" > < a id = "l01806" name = "l01806" > < / a > < span class = "lineno" > 1806< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01807" name = "l01807" > < / a > < span class = "lineno" > 1807< / span > < span class = "keywordflow" > default< / span > :< / div >
< div class = "line" > < a id = "l01808" name = "l01808" > < / a > < span class = "lineno" > 1808< / span > < span class = "comment" > // No reduction, the multiple is chosen to cancel var.< / span > < / div >
< div class = "line" > < a id = "l01809" name = "l01809" > < / a > < span class = "lineno" > 1809< / span > multiplier = conflict-> GetCoefficient(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01810" name = "l01810" > < / a > < span class = "lineno" > 1810< / span > }< / div >
< div class = "line" > < a id = "l01811" name = "l01811" > < / a > < span class = "lineno" > 1811< / span > < / div >
< div class = "line" > < a id = "l01812" name = "l01812" > < / a > < span class = "lineno" > 1812< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > num_literals(1);< / div >
< div class = "line" > < a id = "l01813" name = "l01813" > < / a > < span class = "lineno" > 1813< / span > conflict-> AddTerm(< / div >
< div class = "line" > < a id = "l01814" name = "l01814" > < / a > < span class = "lineno" > 1814< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#ac821b9b8b54da703731ce70864668a89" > GetTrueLiteralForAssignedVariable< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ).< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644" > Negated< / a > (),< / div >
< div class = "line" > < a id = "l01815" name = "l01815" > < / a > < span class = "lineno" > 1815< / span > multiplier);< / div >
< div class = "line" > < a id = "l01816" name = "l01816" > < / a > < span class = "lineno" > 1816< / span > < span class = "keywordflow" > for< / span > (Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > )) {< / div >
< div class = "line" > < a id = "l01817" name = "l01817" > < / a > < span class = "lineno" > 1817< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable(), < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01818" name = "l01818" > < / a > < span class = "lineno" > 1818< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().LiteralIsFalse(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > ));< / div >
< div class = "line" > < a id = "l01819" name = "l01819" > < / a > < span class = "lineno" > 1819< / span > conflict-> AddTerm(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Negated(), multiplier);< / div >
< div class = "line" > < a id = "l01820" name = "l01820" > < / a > < span class = "lineno" > 1820< / span > ++num_literals;< / div >
< div class = "line" > < a id = "l01821" name = "l01821" > < / a > < span class = "lineno" > 1821< / span > }< / div >
< div class = "line" > < a id = "l01822" name = "l01822" > < / a > < span class = "lineno" > 1822< / span > conflict-> AddToRhs((num_literals - 1) * multiplier);< / div >
< div class = "line" > < a id = "l01823" name = "l01823" > < / a > < span class = "lineno" > 1823< / span > < / div >
< div class = "line" > < a id = "l01824" name = "l01824" > < / a > < span class = "lineno" > 1824< / span > < span class = "comment" > // All the algorithms above result in a new slack of -1.< / span > < / div >
< div class = "line" > < a id = "l01825" name = "l01825" > < / a > < span class = "lineno" > 1825< / span > *slack = -1;< / div >
< div class = "line" > < a id = "l01826" name = "l01826" > < / a > < span class = "lineno" > 1826< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (*slack, conflict-> ComputeSlackForTrailPrefix(*trail_, trail_index));< / div >
< div class = "line" > < a id = "l01827" name = "l01827" > < / a > < span class = "lineno" > 1827< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01828" name = "l01828" > < / a > < span class = "lineno" > 1828< / span > }< / div >
< div class = "line" > < a id = "l01829" name = "l01829" > < / a > < span class = "lineno" > 1829< / span > < / div >
< div class = "line" > < a id = "l01830" name = "l01830" > < / a > < span class = "lineno" > 1830< / span > < span class = "keywordtype" > void< / span > SatSolver::EnqueueNewDecision(Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > ) {< / div >
< div class = "line" > < a id = "l01831" name = "l01831" > < / a > < span class = "lineno" > 1831< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01832" name = "l01832" > < / a > < span class = "lineno" > 1832< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (!< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().VariableIsAssigned(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()));< / div >
< div class = "line" > < a id = "l01833" name = "l01833" > < / a > < span class = "lineno" > 1833< / span > < / div >
< div class = "line" > < a id = "l01834" name = "l01834" > < / a > < span class = "lineno" > 1834< / span > < span class = "comment" > // We are back at level 0. This can happen because of a restart, or because< / span > < / div >
< div class = "line" > < a id = "l01835" name = "l01835" > < / a > < span class = "lineno" > 1835< / span > < span class = "comment" > // we proved that some variables must take a given value in any satisfiable< / span > < / div >
< div class = "line" > < a id = "l01836" name = "l01836" > < / a > < span class = "lineno" > 1836< / span > < span class = "comment" > // assignment. Trigger a simplification of the clauses if there is new fixed< / span > < / div >
< div class = "line" > < a id = "l01837" name = "l01837" > < / a > < span class = "lineno" > 1837< / span > < span class = "comment" > // variables. Note that for efficiency reason, we don' t do that too often.< / span > < / div >
< div class = "line" > < a id = "l01838" name = "l01838" > < / a > < span class = "lineno" > 1838< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01839" name = "l01839" > < / a > < span class = "lineno" > 1839< / span > < span class = "comment" > // TODO(user): Do more advanced preprocessing?< / span > < / div >
< div class = "line" > < a id = "l01840" name = "l01840" > < / a > < span class = "lineno" > 1840< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () == 0) {< / div >
< div class = "line" > < a id = "l01841" name = "l01841" > < / a > < span class = "lineno" > 1841< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > kMinDeterministicTimeBetweenCleanups = 1.0;< / div >
< div class = "line" > < a id = "l01842" name = "l01842" > < / a > < span class = "lineno" > 1842< / span > < span class = "keywordflow" > if< / span > (num_processed_fixed_variables_ < trail_-> < a class = "code hl_typedef" href = "namespaceoperations__research_1_1glop.html#ac89c7b45754e9a6bdabc08bea586fc4e" > Index< / a > () & & < / div >
< div class = "line" > < a id = "l01843" name = "l01843" > < / a > < span class = "lineno" > 1843< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ae525d235b02bcfc962d845e28f5f0125" > deterministic_time< / a > () > < / div >
< div class = "line" > < a id = "l01844" name = "l01844" > < / a > < span class = "lineno" > 1844< / span > deterministic_time_of_last_fixed_variables_cleanup_ +< / div >
< div class = "line" > < a id = "l01845" name = "l01845" > < / a > < span class = "lineno" > 1845< / span > kMinDeterministicTimeBetweenCleanups) {< / div >
< div class = "line" > < a id = "l01846" name = "l01846" > < / a > < span class = "lineno" > 1846< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2aafb0d6bd7d95f183e87866d0ade374" > ProcessNewlyFixedVariables< / a > ();< / div >
< div class = "line" > < a id = "l01847" name = "l01847" > < / a > < span class = "lineno" > 1847< / span > }< / div >
< div class = "line" > < a id = "l01848" name = "l01848" > < / a > < span class = "lineno" > 1848< / span > }< / div >
< div class = "line" > < a id = "l01849" name = "l01849" > < / a > < span class = "lineno" > 1849< / span > < / div >
< div class = "line" > < a id = "l01850" name = "l01850" > < / a > < span class = "lineno" > 1850< / span > counters_.num_branches++;< / div >
< div class = "line" > < a id = "l01851" name = "l01851" > < / a > < span class = "lineno" > 1851< / span > last_decision_or_backtrack_trail_index_ = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ();< / div >
< div class = "line" > < a id = "l01852" name = "l01852" > < / a > < span class = "lineno" > 1852< / span > decisions_[current_decision_level_] = Decision(trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > (), < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > );< / div >
< div class = "line" > < a id = "l01853" name = "l01853" > < / a > < span class = "lineno" > 1853< / span > ++current_decision_level_;< / div >
< div class = "line" > < a id = "l01854" name = "l01854" > < / a > < span class = "lineno" > 1854< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#adeeeb993a93b815c1c343f9c46ec3564" > SetDecisionLevel< / a > (current_decision_level_);< / div >
< div class = "line" > < a id = "l01855" name = "l01855" > < / a > < span class = "lineno" > 1855< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#afc2d489cf3ae30c4b27ff1e4359e1be9" > EnqueueSearchDecision< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > );< / div >
< div class = "line" > < a id = "l01856" name = "l01856" > < / a > < span class = "lineno" > 1856< / span > }< / div >
< div class = "line" > < a id = "l01857" name = "l01857" > < / a > < span class = "lineno" > 1857< / span > < / div >
< div class = "line" > < a id = "l01858" name = "l01858" > < / a > < span class = "lineno" > 1858< / span > < span class = "keywordtype" > void< / span > SatSolver::Untrail(< span class = "keywordtype" > int< / span > target_trail_index) {< / div >
< div class = "line" > < a id = "l01859" name = "l01859" > < / a > < span class = "lineno" > 1859< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01860" name = "l01860" > < / a > < span class = "lineno" > 1860< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a" > DCHECK_LT< / a > (target_trail_index, trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > Index< / a > ());< / div >
< div class = "line" > < a id = "l01861" name = "l01861" > < / a > < span class = "lineno" > 1861< / span > < span class = "keywordflow" > for< / span > (SatPropagator* propagator : propagators_) {< / div >
< div class = "line" > < a id = "l01862" name = "l01862" > < / a > < span class = "lineno" > 1862< / span > < span class = "keywordflow" > if< / span > (propagator-> IsEmpty()) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01863" name = "l01863" > < / a > < span class = "lineno" > 1863< / span > propagator-> Untrail(*trail_, target_trail_index);< / div >
< div class = "line" > < a id = "l01864" name = "l01864" > < / a > < span class = "lineno" > 1864< / span > }< / div >
< div class = "line" > < a id = "l01865" name = "l01865" > < / a > < span class = "lineno" > 1865< / span > decision_policy_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#aa62b9215667a0b7dc6af8251dbaba486" > Untrail< / a > (target_trail_index);< / div >
< div class = "line" > < a id = "l01866" name = "l01866" > < / a > < span class = "lineno" > 1866< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aa62b9215667a0b7dc6af8251dbaba486" > Untrail< / a > (target_trail_index);< / div >
< div class = "line" > < a id = "l01867" name = "l01867" > < / a > < span class = "lineno" > 1867< / span > }< / div >
< div class = "line" > < a id = "l01868" name = "l01868" > < / a > < span class = "lineno" > 1868< / span > < / div >
< div class = "line" > < a id = "l01869" name = "l01869" > < / a > < span class = "lineno" > 1869< / span > std::string SatSolver::DebugString(< span class = "keyword" > const< / span > SatClause& clause)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l01870" name = "l01870" > < / a > < span class = "lineno" > 1870< / span > std::string result;< / div >
< div class = "line" > < a id = "l01871" name = "l01871" > < / a > < span class = "lineno" > 1871< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : clause) {< / div >
< div class = "line" > < a id = "l01872" name = "l01872" > < / a > < span class = "lineno" > 1872< / span > < span class = "keywordflow" > if< / span > (!result.empty()) {< / div >
< div class = "line" > < a id = "l01873" name = "l01873" > < / a > < span class = "lineno" > 1873< / span > result.append(< span class = "stringliteral" > " || " < / span > );< / div >
< div class = "line" > < a id = "l01874" name = "l01874" > < / a > < span class = "lineno" > 1874< / span > }< / div >
< div class = "line" > < a id = "l01875" name = "l01875" > < / a > < span class = "lineno" > 1875< / span > < span class = "keyword" > const< / span > std::string < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > =< / div >
< div class = "line" > < a id = "l01876" name = "l01876" > < / a > < span class = "lineno" > 1876< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > )< / div >
< div class = "line" > < a id = "l01877" name = "l01877" > < / a > < span class = "lineno" > 1877< / span > ? < span class = "stringliteral" > " true" < / span > < / div >
< div class = "line" > < a id = "l01878" name = "l01878" > < / a > < span class = "lineno" > 1878< / span > : (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5" > LiteralIsFalse< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > ) ? < span class = "stringliteral" > " false" < / span > < / div >
< div class = "line" > < a id = "l01879" name = "l01879" > < / a > < span class = "lineno" > 1879< / span > : < span class = "stringliteral" > " undef" < / span > );< / div >
< div class = "line" > < a id = "l01880" name = "l01880" > < / a > < span class = "lineno" > 1880< / span > result.append(absl::StrFormat(< span class = "stringliteral" > " %s(%s)" < / span > , < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .DebugString(), < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ));< / div >
< div class = "line" > < a id = "l01881" name = "l01881" > < / a > < span class = "lineno" > 1881< / span > }< / div >
< div class = "line" > < a id = "l01882" name = "l01882" > < / a > < span class = "lineno" > 1882< / span > < span class = "keywordflow" > return< / span > result;< / div >
< div class = "line" > < a id = "l01883" name = "l01883" > < / a > < span class = "lineno" > 1883< / span > }< / div >
< div class = "line" > < a id = "l01884" name = "l01884" > < / a > < span class = "lineno" > 1884< / span > < / div >
< div class = "line" > < a id = "l01885" name = "l01885" > < / a > < span class = "lineno" > 1885< / span > < span class = "keywordtype" > int< / span > SatSolver::ComputeMaxTrailIndex(absl::Span< const Literal> clause)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l01886" name = "l01886" > < / a > < span class = "lineno" > 1886< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01887" name = "l01887" > < / a > < span class = "lineno" > 1887< / span > < span class = "keywordtype" > int< / span > trail_index = -1;< / div >
< div class = "line" > < a id = "l01888" name = "l01888" > < / a > < span class = "lineno" > 1888< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : clause) {< / div >
< div class = "line" > < a id = "l01889" name = "l01889" > < / a > < span class = "lineno" > 1889< / span > trail_index =< / div >
< div class = "line" > < a id = "l01890" name = "l01890" > < / a > < span class = "lineno" > 1890< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (trail_index, trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a0f2d611d5c2d56f60646827438acf3af" > trail_index< / a > );< / div >
< div class = "line" > < a id = "l01891" name = "l01891" > < / a > < span class = "lineno" > 1891< / span > }< / div >
< div class = "line" > < a id = "l01892" name = "l01892" > < / a > < span class = "lineno" > 1892< / span > < span class = "keywordflow" > return< / span > trail_index;< / div >
< div class = "line" > < a id = "l01893" name = "l01893" > < / a > < span class = "lineno" > 1893< / span > }< / div >
< div class = "line" > < a id = "l01894" name = "l01894" > < / a > < span class = "lineno" > 1894< / span > < / div >
< div class = "line" > < a id = "l01895" name = "l01895" > < / a > < span class = "lineno" > 1895< / span > < span class = "comment" > // This method will compute a first UIP conflict< / span > < / div >
< div class = "line" > < a id = "l01896" name = "l01896" > < / a > < span class = "lineno" > 1896< / span > < span class = "comment" > // http://www.cs.tau.ac.il/~msagiv/courses/ATP/iccad2001_final.pdf< / span > < / div >
< div class = "line" > < a id = "l01897" name = "l01897" > < / a > < span class = "lineno" > 1897< / span > < span class = "comment" > // http://gauss.ececs.uc.edu/SAT/articles/FAIA185-0131.pdf< / span > < / div >
< div class = "line" > < a id = "l01898" name = "l01898" > < / a > < span class = "lineno" > 1898< / span > < span class = "keywordtype" > void< / span > SatSolver::ComputeFirstUIPConflict(< / div >
< div class = "line" > < a id = "l01899" name = "l01899" > < / a > < span class = "lineno" > 1899< / span > < span class = "keywordtype" > int< / span > max_trail_index, std::vector< Literal> * conflict,< / div >
< div class = "line" > < a id = "l01900" name = "l01900" > < / a > < span class = "lineno" > 1900< / span > std::vector< Literal> * reason_used_to_infer_the_conflict,< / div >
< div class = "line" > < a id = "l01901" name = "l01901" > < / a > < span class = "lineno" > 1901< / span > std::vector< SatClause*> * subsumed_clauses) {< / div >
< div class = "line" > < a id = "l01902" name = "l01902" > < / a > < span class = "lineno" > 1902< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l01903" name = "l01903" > < / a > < span class = "lineno" > 1903< / span > < / div >
< div class = "line" > < a id = "l01904" name = "l01904" > < / a > < span class = "lineno" > 1904< / span > < span class = "comment" > // This will be used to mark all the literals inspected while we process the< / span > < / div >
< div class = "line" > < a id = "l01905" name = "l01905" > < / a > < span class = "lineno" > 1905< / span > < span class = "comment" > // conflict and the reasons behind each of its variable assignments.< / span > < / div >
< div class = "line" > < a id = "l01906" name = "l01906" > < / a > < span class = "lineno" > 1906< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > ClearAndResize< / a > (num_variables_);< / div >
< div class = "line" > < a id = "l01907" name = "l01907" > < / a > < span class = "lineno" > 1907< / span > < / div >
< div class = "line" > < a id = "l01908" name = "l01908" > < / a > < span class = "lineno" > 1908< / span > conflict-> clear();< / div >
< div class = "line" > < a id = "l01909" name = "l01909" > < / a > < span class = "lineno" > 1909< / span > reason_used_to_infer_the_conflict-> clear();< / div >
< div class = "line" > < a id = "l01910" name = "l01910" > < / a > < span class = "lineno" > 1910< / span > subsumed_clauses-> clear();< / div >
< div class = "line" > < a id = "l01911" name = "l01911" > < / a > < span class = "lineno" > 1911< / span > < span class = "keywordflow" > if< / span > (max_trail_index == -1) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01912" name = "l01912" > < / a > < span class = "lineno" > 1912< / span > < / div >
< div class = "line" > < a id = "l01913" name = "l01913" > < / a > < span class = "lineno" > 1913< / span > < span class = "comment" > // max_trail_index is the maximum trail index appearing in the failing_clause< / span > < / div >
< div class = "line" > < a id = "l01914" name = "l01914" > < / a > < span class = "lineno" > 1914< / span > < span class = "comment" > // and its level (Which is almost always equals to the CurrentDecisionLevel(),< / span > < / div >
< div class = "line" > < a id = "l01915" name = "l01915" > < / a > < span class = "lineno" > 1915< / span > < span class = "comment" > // except for symmetry propagation).< / span > < / div >
< div class = "line" > < a id = "l01916" name = "l01916" > < / a > < span class = "lineno" > 1916< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (max_trail_index, ComputeMaxTrailIndex(trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ace3ed18a3fa848ebbe2a2166e273e903" > FailingClause< / a > ()));< / div >
< div class = "line" > < a id = "l01917" name = "l01917" > < / a > < span class = "lineno" > 1917< / span > < span class = "keywordtype" > int< / span > trail_index = max_trail_index;< / div >
< div class = "line" > < a id = "l01918" name = "l01918" > < / a > < span class = "lineno" > 1918< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > highest_level = DecisionLevel((*trail_)[trail_index].Variable());< / div >
< div class = "line" > < a id = "l01919" name = "l01919" > < / a > < span class = "lineno" > 1919< / span > < span class = "keywordflow" > if< / span > (highest_level == 0) < span class = "keywordflow" > return< / span > ;< / div >
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< div class = "line" > < a id = "l01920" name = "l01920" > < / a > < span class = "lineno" > 1920< / span > < / div >
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< div class = "line" > < a id = "l01921" name = "l01921" > < / a > < span class = "lineno" > 1921< / span > < span class = "comment" > // To find the 1-UIP conflict clause, we start by the failing_clause, and< / span > < / div >
< div class = "line" > < a id = "l01922" name = "l01922" > < / a > < span class = "lineno" > 1922< / span > < span class = "comment" > // expand each of its literal using the reason for this literal assignment to< / span > < / div >
< div class = "line" > < a id = "l01923" name = "l01923" > < / a > < span class = "lineno" > 1923< / span > < span class = "comment" > // false. The is_marked_ set allow us to never expand the same literal twice.< / span > < / div >
< div class = "line" > < a id = "l01924" name = "l01924" > < / a > < span class = "lineno" > 1924< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01925" name = "l01925" > < / a > < span class = "lineno" > 1925< / span > < span class = "comment" > // The expansion is not done (i.e. stop) for literals that were assigned at a< / span > < / div >
< div class = "line" > < a id = "l01926" name = "l01926" > < / a > < span class = "lineno" > 1926< / span > < span class = "comment" > // decision level below the current one. If the level of such literal is not< / span > < / div >
< div class = "line" > < a id = "l01927" name = "l01927" > < / a > < span class = "lineno" > 1927< / span > < span class = "comment" > // zero, it is added to the conflict clause.< / span > < / div >
< div class = "line" > < a id = "l01928" name = "l01928" > < / a > < span class = "lineno" > 1928< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01929" name = "l01929" > < / a > < span class = "lineno" > 1929< / span > < span class = "comment" > // Now, the trick is that we use the trail to expand the literal of the< / span > < / div >
< div class = "line" > < a id = "l01930" name = "l01930" > < / a > < span class = "lineno" > 1930< / span > < span class = "comment" > // current level in a very specific order. Namely the reverse order of the one< / span > < / div >
< div class = "line" > < a id = "l01931" name = "l01931" > < / a > < span class = "lineno" > 1931< / span > < span class = "comment" > // in which they were inferred. We stop as soon as< / span > < / div >
< div class = "line" > < a id = "l01932" name = "l01932" > < / a > < span class = "lineno" > 1932< / span > < span class = "comment" > // num_literal_at_highest_level_that_needs_to_be_processed is exactly one.< / span > < / div >
< div class = "line" > < a id = "l01933" name = "l01933" > < / a > < span class = "lineno" > 1933< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01934" name = "l01934" > < / a > < span class = "lineno" > 1934< / span > < span class = "comment" > // This last literal will be the first UIP because by definition all the< / span > < / div >
< div class = "line" > < a id = "l01935" name = "l01935" > < / a > < span class = "lineno" > 1935< / span > < span class = "comment" > // propagation done at the current level will pass though it at some point.< / span > < / div >
< div class = "line" > < a id = "l01936" name = "l01936" > < / a > < span class = "lineno" > 1936< / span > absl::Span< const Literal> clause_to_expand = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ace3ed18a3fa848ebbe2a2166e273e903" > FailingClause< / a > ();< / div >
< div class = "line" > < a id = "l01937" name = "l01937" > < / a > < span class = "lineno" > 1937< / span > SatClause* sat_clause = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a1b8fbc7c3c520e649cbfea284f58c9f7" > FailingSatClause< / a > ();< / div >
< div class = "line" > < a id = "l01938" name = "l01938" > < / a > < span class = "lineno" > 1938< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (!clause_to_expand.empty());< / div >
< div class = "line" > < a id = "l01939" name = "l01939" > < / a > < span class = "lineno" > 1939< / span > < span class = "keywordtype" > int< / span > num_literal_at_highest_level_that_needs_to_be_processed = 0;< / div >
< div class = "line" > < a id = "l01940" name = "l01940" > < / a > < span class = "lineno" > 1940< / span > < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
< div class = "line" > < a id = "l01941" name = "l01941" > < / a > < span class = "lineno" > 1941< / span > < span class = "keywordtype" > int< / span > num_new_vars_at_positive_level = 0;< / div >
< div class = "line" > < a id = "l01942" name = "l01942" > < / a > < span class = "lineno" > 1942< / span > < span class = "keywordtype" > int< / span > num_vars_at_positive_level_in_clause_to_expand = 0;< / div >
< div class = "line" > < a id = "l01943" name = "l01943" > < / a > < span class = "lineno" > 1943< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : clause_to_expand) {< / div >
< div class = "line" > < a id = "l01944" name = "l01944" > < / a > < span class = "lineno" > 1944< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable();< / div >
< div class = "line" > < a id = "l01945" name = "l01945" > < / a > < span class = "lineno" > 1945< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01946" name = "l01946" > < / a > < span class = "lineno" > 1946< / span > < span class = "keywordflow" > if< / span > (level > 0) ++num_vars_at_positive_level_in_clause_to_expand;< / div >
< div class = "line" > < a id = "l01947" name = "l01947" > < / a > < span class = "lineno" > 1947< / span > < span class = "keywordflow" > if< / span > (!is_marked_[< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ]) {< / div >
< div class = "line" > < a id = "l01948" name = "l01948" > < / a > < span class = "lineno" > 1948< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l01949" name = "l01949" > < / a > < span class = "lineno" > 1949< / span > < span class = "keywordflow" > if< / span > (level == highest_level) {< / div >
< div class = "line" > < a id = "l01950" name = "l01950" > < / a > < span class = "lineno" > 1950< / span > ++num_new_vars_at_positive_level;< / div >
< div class = "line" > < a id = "l01951" name = "l01951" > < / a > < span class = "lineno" > 1951< / span > ++num_literal_at_highest_level_that_needs_to_be_processed;< / div >
< div class = "line" > < a id = "l01952" name = "l01952" > < / a > < span class = "lineno" > 1952< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (level > 0) {< / div >
< div class = "line" > < a id = "l01953" name = "l01953" > < / a > < span class = "lineno" > 1953< / span > ++num_new_vars_at_positive_level;< / div >
< div class = "line" > < a id = "l01954" name = "l01954" > < / a > < span class = "lineno" > 1954< / span > < span class = "comment" > // Note that all these literals are currently false since the clause< / span > < / div >
< div class = "line" > < a id = "l01955" name = "l01955" > < / a > < span class = "lineno" > 1955< / span > < span class = "comment" > // to expand was used to infer the value of a literal at this level.< / span > < / div >
< div class = "line" > < a id = "l01956" name = "l01956" > < / a > < span class = "lineno" > 1956< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5" > LiteralIsFalse< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > ));< / div >
< div class = "line" > < a id = "l01957" name = "l01957" > < / a > < span class = "lineno" > 1957< / span > conflict-> push_back(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > );< / div >
< div class = "line" > < a id = "l01958" name = "l01958" > < / a > < span class = "lineno" > 1958< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01959" name = "l01959" > < / a > < span class = "lineno" > 1959< / span > reason_used_to_infer_the_conflict-> push_back(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > );< / div >
< div class = "line" > < a id = "l01960" name = "l01960" > < / a > < span class = "lineno" > 1960< / span > }< / div >
< div class = "line" > < a id = "l01961" name = "l01961" > < / a > < span class = "lineno" > 1961< / span > }< / div >
< div class = "line" > < a id = "l01962" name = "l01962" > < / a > < span class = "lineno" > 1962< / span > }< / div >
< div class = "line" > < a id = "l01963" name = "l01963" > < / a > < span class = "lineno" > 1963< / span > < / div >
< div class = "line" > < a id = "l01964" name = "l01964" > < / a > < span class = "lineno" > 1964< / span > < span class = "comment" > // If there is new variables, then all the previously subsumed clauses are< / span > < / div >
< div class = "line" > < a id = "l01965" name = "l01965" > < / a > < span class = "lineno" > 1965< / span > < span class = "comment" > // not subsumed anymore.< / span > < / div >
< div class = "line" > < a id = "l01966" name = "l01966" > < / a > < span class = "lineno" > 1966< / span > < span class = "keywordflow" > if< / span > (num_new_vars_at_positive_level > 0) {< / div >
< div class = "line" > < a id = "l01967" name = "l01967" > < / a > < span class = "lineno" > 1967< / span > < span class = "comment" > // TODO(user): We could still replace all these clauses with the current< / span > < / div >
< div class = "line" > < a id = "l01968" name = "l01968" > < / a > < span class = "lineno" > 1968< / span > < span class = "comment" > // conflict.< / span > < / div >
< div class = "line" > < a id = "l01969" name = "l01969" > < / a > < span class = "lineno" > 1969< / span > subsumed_clauses-> clear();< / div >
< div class = "line" > < a id = "l01970" name = "l01970" > < / a > < span class = "lineno" > 1970< / span > }< / div >
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< div class = "line" > < a id = "l01971" name = "l01971" > < / a > < span class = "lineno" > 1971< / span > < / div >
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< div class = "line" > < a id = "l01972" name = "l01972" > < / a > < span class = "lineno" > 1972< / span > < span class = "comment" > // This check if the new conflict is exactly equal to clause_to_expand.< / span > < / div >
< div class = "line" > < a id = "l01973" name = "l01973" > < / a > < span class = "lineno" > 1973< / span > < span class = "comment" > // Since we just performed an union, comparing the size is enough. When this< / span > < / div >
< div class = "line" > < a id = "l01974" name = "l01974" > < / a > < span class = "lineno" > 1974< / span > < span class = "comment" > // is true, then the current conflict subsumes the reason whose underlying< / span > < / div >
< div class = "line" > < a id = "l01975" name = "l01975" > < / a > < span class = "lineno" > 1975< / span > < span class = "comment" > // clause is given by sat_clause.< / span > < / div >
< div class = "line" > < a id = "l01976" name = "l01976" > < / a > < span class = "lineno" > 1976< / span > < span class = "keywordflow" > if< / span > (sat_clause != < span class = "keyword" > nullptr< / span > & & < / div >
< div class = "line" > < a id = "l01977" name = "l01977" > < / a > < span class = "lineno" > 1977< / span > num_vars_at_positive_level_in_clause_to_expand ==< / div >
< div class = "line" > < a id = "l01978" name = "l01978" > < / a > < span class = "lineno" > 1978< / span > conflict-> size() +< / div >
< div class = "line" > < a id = "l01979" name = "l01979" > < / a > < span class = "lineno" > 1979< / span > num_literal_at_highest_level_that_needs_to_be_processed) {< / div >
< div class = "line" > < a id = "l01980" name = "l01980" > < / a > < span class = "lineno" > 1980< / span > subsumed_clauses-> push_back(sat_clause);< / div >
< div class = "line" > < a id = "l01981" name = "l01981" > < / a > < span class = "lineno" > 1981< / span > }< / div >
< div class = "line" > < a id = "l01982" name = "l01982" > < / a > < span class = "lineno" > 1982< / span > < / div >
< div class = "line" > < a id = "l01983" name = "l01983" > < / a > < span class = "lineno" > 1983< / span > < span class = "comment" > // Find next marked literal to expand from the trail.< / span > < / div >
< div class = "line" > < a id = "l01984" name = "l01984" > < / a > < span class = "lineno" > 1984< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a" > DCHECK_GT< / a > (num_literal_at_highest_level_that_needs_to_be_processed, 0);< / div >
< div class = "line" > < a id = "l01985" name = "l01985" > < / a > < span class = "lineno" > 1985< / span > < span class = "keywordflow" > while< / span > (!is_marked_[(*trail_)[trail_index].Variable()]) {< / div >
< div class = "line" > < a id = "l01986" name = "l01986" > < / a > < span class = "lineno" > 1986< / span > --trail_index;< / div >
< div class = "line" > < a id = "l01987" name = "l01987" > < / a > < span class = "lineno" > 1987< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (trail_index, 0);< / div >
< div class = "line" > < a id = "l01988" name = "l01988" > < / a > < span class = "lineno" > 1988< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (DecisionLevel((*trail_)[trail_index].Variable()),< / div >
< div class = "line" > < a id = "l01989" name = "l01989" > < / a > < span class = "lineno" > 1989< / span > highest_level);< / div >
< div class = "line" > < a id = "l01990" name = "l01990" > < / a > < span class = "lineno" > 1990< / span > }< / div >
< div class = "line" > < a id = "l01991" name = "l01991" > < / a > < span class = "lineno" > 1991< / span > < / div >
< div class = "line" > < a id = "l01992" name = "l01992" > < / a > < span class = "lineno" > 1992< / span > < span class = "keywordflow" > if< / span > (num_literal_at_highest_level_that_needs_to_be_processed == 1) {< / div >
< div class = "line" > < a id = "l01993" name = "l01993" > < / a > < span class = "lineno" > 1993< / span > < span class = "comment" > // We have the first UIP. Add its negation to the conflict clause.< / span > < / div >
< div class = "line" > < a id = "l01994" name = "l01994" > < / a > < span class = "lineno" > 1994< / span > < span class = "comment" > // This way, after backtracking to the proper level, the conflict clause< / span > < / div >
< div class = "line" > < a id = "l01995" name = "l01995" > < / a > < span class = "lineno" > 1995< / span > < span class = "comment" > // will be unit, and infer the negation of the UIP that caused the fail.< / span > < / div >
< div class = "line" > < a id = "l01996" name = "l01996" > < / a > < span class = "lineno" > 1996< / span > conflict-> push_back((*trail_)[trail_index].Negated());< / div >
< div class = "line" > < a id = "l01997" name = "l01997" > < / a > < span class = "lineno" > 1997< / span > < / div >
< div class = "line" > < a id = "l01998" name = "l01998" > < / a > < span class = "lineno" > 1998< / span > < span class = "comment" > // To respect the function API move the first UIP in the first position.< / span > < / div >
< div class = "line" > < a id = "l01999" name = "l01999" > < / a > < span class = "lineno" > 1999< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2" > std::swap< / a > (conflict-> back(), conflict-> front());< / div >
< div class = "line" > < a id = "l02000" name = "l02000" > < / a > < span class = "lineno" > 2000< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02001" name = "l02001" > < / a > < span class = "lineno" > 2001< / span > }< / div >
< div class = "line" > < a id = "l02002" name = "l02002" > < / a > < span class = "lineno" > 2002< / span > < / div >
< div class = "line" > < a id = "l02003" name = "l02003" > < / a > < span class = "lineno" > 2003< / span > < span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > = (*trail_)[trail_index];< / div >
< div class = "line" > < a id = "l02004" name = "l02004" > < / a > < span class = "lineno" > 2004< / span > reason_used_to_infer_the_conflict-> push_back(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > );< / div >
< div class = "line" > < a id = "l02005" name = "l02005" > < / a > < span class = "lineno" > 2005< / span > < / div >
< div class = "line" > < a id = "l02006" name = "l02006" > < / a > < span class = "lineno" > 2006< / span > < span class = "comment" > // If we already encountered the same reason, we can just skip this literal< / span > < / div >
< div class = "line" > < a id = "l02007" name = "l02007" > < / a > < span class = "lineno" > 2007< / span > < span class = "comment" > // which is what setting clause_to_expand to the empty clause do.< / span > < / div >
< div class = "line" > < a id = "l02008" name = "l02008" > < / a > < span class = "lineno" > 2008< / span > < span class = "keywordflow" > if< / span > (same_reason_identifier_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#a85a00c2877e3b249951022638dda5642" > FirstVariableWithSameReason< / a > (< / div >
< div class = "line" > < a id = "l02009" name = "l02009" > < / a > < span class = "lineno" > 2009< / span > < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()) != < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()) {< / div >
< div class = "line" > < a id = "l02010" name = "l02010" > < / a > < span class = "lineno" > 2010< / span > clause_to_expand = {};< / div >
< div class = "line" > < a id = "l02011" name = "l02011" > < / a > < span class = "lineno" > 2011< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l02012" name = "l02012" > < / a > < span class = "lineno" > 2012< / span > clause_to_expand = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable());< / div >
< div class = "line" > < a id = "l02013" name = "l02013" > < / a > < span class = "lineno" > 2013< / span > }< / div >
< div class = "line" > < a id = "l02014" name = "l02014" > < / a > < span class = "lineno" > 2014< / span > sat_clause = ReasonClauseOrNull(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable());< / div >
< div class = "line" > < a id = "l02015" name = "l02015" > < / a > < span class = "lineno" > 2015< / span > < / div >
< div class = "line" > < a id = "l02016" name = "l02016" > < / a > < span class = "lineno" > 2016< / span > --num_literal_at_highest_level_that_needs_to_be_processed;< / div >
< div class = "line" > < a id = "l02017" name = "l02017" > < / a > < span class = "lineno" > 2017< / span > --trail_index;< / div >
< div class = "line" > < a id = "l02018" name = "l02018" > < / a > < span class = "lineno" > 2018< / span > }< / div >
< div class = "line" > < a id = "l02019" name = "l02019" > < / a > < span class = "lineno" > 2019< / span > }< / div >
< div class = "line" > < a id = "l02020" name = "l02020" > < / a > < span class = "lineno" > 2020< / span > < / div >
< div class = "line" > < a id = "l02021" name = "l02021" > < / a > < span class = "lineno" > 2021< / span > < span class = "keywordtype" > void< / span > SatSolver::ComputeUnionOfReasons(< span class = "keyword" > const< / span > std::vector< Literal> & < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ,< / div >
< div class = "line" > < a id = "l02022" name = "l02022" > < / a > < span class = "lineno" > 2022< / span > std::vector< Literal> * literals) {< / div >
< div class = "line" > < a id = "l02023" name = "l02023" > < / a > < span class = "lineno" > 2023< / span > tmp_mark_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > ClearAndResize< / a > (num_variables_);< / div >
< div class = "line" > < a id = "l02024" name = "l02024" > < / a > < span class = "lineno" > 2024< / span > literals-> clear();< / div >
< div class = "line" > < a id = "l02025" name = "l02025" > < / a > < span class = "lineno" > 2025< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal l : < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ) tmp_mark_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (l.Variable());< / div >
< div class = "line" > < a id = "l02026" name = "l02026" > < / a > < span class = "lineno" > 2026< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal l : < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ) {< / div >
< div class = "line" > < a id = "l02027" name = "l02027" > < / a > < span class = "lineno" > 2027< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal r : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (l.Variable())) {< / div >
< div class = "line" > < a id = "l02028" name = "l02028" > < / a > < span class = "lineno" > 2028< / span > < span class = "keywordflow" > if< / span > (!tmp_mark_[r.Variable()]) {< / div >
< div class = "line" > < a id = "l02029" name = "l02029" > < / a > < span class = "lineno" > 2029< / span > tmp_mark_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (r.Variable());< / div >
< div class = "line" > < a id = "l02030" name = "l02030" > < / a > < span class = "lineno" > 2030< / span > literals-> push_back(r);< / div >
< div class = "line" > < a id = "l02031" name = "l02031" > < / a > < span class = "lineno" > 2031< / span > }< / div >
< div class = "line" > < a id = "l02032" name = "l02032" > < / a > < span class = "lineno" > 2032< / span > }< / div >
< div class = "line" > < a id = "l02033" name = "l02033" > < / a > < span class = "lineno" > 2033< / span > }< / div >
< div class = "line" > < a id = "l02034" name = "l02034" > < / a > < span class = "lineno" > 2034< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal l : < a class = "code hl_function" href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > ) tmp_mark_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ab465e925b8a535e5de8a072174ecafda" > Clear< / a > (l.Variable());< / div >
< div class = "line" > < a id = "l02035" name = "l02035" > < / a > < span class = "lineno" > 2035< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal l : *literals) tmp_mark_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ab465e925b8a535e5de8a072174ecafda" > Clear< / a > (l.Variable());< / div >
< div class = "line" > < a id = "l02036" name = "l02036" > < / a > < span class = "lineno" > 2036< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l02037" name = "l02037" > < / a > < span class = "lineno" > 2037< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l02038" name = "l02038" > < / a > < span class = "lineno" > 2038< / span > < span class = "comment" > // TODO(user): Remove the literals assigned at level 0.< / span > < / div >
< div class = "line" > < a id = "l02039" name = "l02039" > < / a > < span class = "lineno" > 2039< / span > < span class = "keywordtype" > void< / span > SatSolver::ComputePBConflict(< span class = "keywordtype" > int< / span > max_trail_index,< / div >
< div class = "line" > < a id = "l02040" name = "l02040" > < / a > < span class = "lineno" > 2040< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > initial_slack,< / div >
< div class = "line" > < a id = "l02041" name = "l02041" > < / a > < span class = "lineno" > 2041< / span > MutableUpperBoundedLinearConstraint* conflict,< / div >
< div class = "line" > < a id = "l02042" name = "l02042" > < / a > < span class = "lineno" > 2042< / span > < span class = "keywordtype" > int< / span > * pb_backjump_level) {< / div >
< div class = "line" > < a id = "l02043" name = "l02043" > < / a > < span class = "lineno" > 2043< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l02044" name = "l02044" > < / a > < span class = "lineno" > 2044< / span > < span class = "keywordtype" > int< / span > trail_index = max_trail_index;< / div >
< div class = "line" > < a id = "l02045" name = "l02045" > < / a > < span class = "lineno" > 2045< / span > < / div >
< div class = "line" > < a id = "l02046" name = "l02046" > < / a > < span class = "lineno" > 2046< / span > < span class = "comment" > // First compute the slack of the current conflict for the assignment up to< / span > < / div >
< div class = "line" > < a id = "l02047" name = "l02047" > < / a > < span class = "lineno" > 2047< / span > < span class = "comment" > // trail_index. It must be negative since this is a conflict.< / span > < / div >
< div class = "line" > < a id = "l02048" name = "l02048" > < / a > < span class = "lineno" > 2048< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > slack = initial_slack;< / div >
< div class = "line" > < a id = "l02049" name = "l02049" > < / a > < span class = "lineno" > 2049< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (slack,< / div >
< div class = "line" > < a id = "l02050" name = "l02050" > < / a > < span class = "lineno" > 2050< / span > conflict-> ComputeSlackForTrailPrefix(*trail_, trail_index + 1));< / div >
< div class = "line" > < a id = "l02051" name = "l02051" > < / a > < span class = "lineno" > 2051< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82" > CHECK_LT< / a > (slack, 0) < < < span class = "stringliteral" > " We don' t have a conflict!" < / span > ;< / div >
< div class = "line" > < a id = "l02052" name = "l02052" > < / a > < span class = "lineno" > 2052< / span > < / div >
< div class = "line" > < a id = "l02053" name = "l02053" > < / a > < span class = "lineno" > 2053< / span > < span class = "comment" > // Iterate backward over the trail.< / span > < / div >
< div class = "line" > < a id = "l02054" name = "l02054" > < / a > < span class = "lineno" > 2054< / span > < span class = "keywordtype" > int< / span > backjump_level = 0;< / div >
< div class = "line" > < a id = "l02055" name = "l02055" > < / a > < span class = "lineno" > 2055< / span > < span class = "keywordflow" > while< / span > (< span class = "keyword" > true< / span > ) {< / div >
< div class = "line" > < a id = "l02056" name = "l02056" > < / a > < span class = "lineno" > 2056< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = (*trail_)[trail_index].Variable();< / div >
< div class = "line" > < a id = "l02057" name = "l02057" > < / a > < span class = "lineno" > 2057< / span > --trail_index;< / div >
< div class = "line" > < a id = "l02058" name = "l02058" > < / a > < span class = "lineno" > 2058< / span > < / div >
< div class = "line" > < a id = "l02059" name = "l02059" > < / a > < span class = "lineno" > 2059< / span > < span class = "keywordflow" > if< / span > (conflict-> GetCoefficient(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ) > 0 & & < / div >
< div class = "line" > < a id = "l02060" name = "l02060" > < / a > < span class = "lineno" > 2060< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (conflict-> GetLiteral(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ))) {< / div >
< div class = "line" > < a id = "l02061" name = "l02061" > < / a > < span class = "lineno" > 2061< / span > < span class = "keywordflow" > if< / span > (parameters_-> minimize_reduction_during_pb_resolution()) {< / div >
< div class = "line" > < a id = "l02062" name = "l02062" > < / a > < span class = "lineno" > 2062< / span > < span class = "comment" > // When this parameter is true, we don' t call ReduceCoefficients() at< / span > < / div >
< div class = "line" > < a id = "l02063" name = "l02063" > < / a > < span class = "lineno" > 2063< / span > < span class = "comment" > // every loop. However, it is still important to reduce the " current" < / span > < / div >
< div class = "line" > < a id = "l02064" name = "l02064" > < / a > < span class = "lineno" > 2064< / span > < span class = "comment" > // variable coefficient, because this can impact the value of the new< / span > < / div >
< div class = "line" > < a id = "l02065" name = "l02065" > < / a > < span class = "lineno" > 2065< / span > < span class = "comment" > // slack below.< / span > < / div >
< div class = "line" > < a id = "l02066" name = "l02066" > < / a > < span class = "lineno" > 2066< / span > conflict-> ReduceGivenCoefficient(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02067" name = "l02067" > < / a > < span class = "lineno" > 2067< / span > }< / div >
< div class = "line" > < a id = "l02068" name = "l02068" > < / a > < span class = "lineno" > 2068< / span > < / div >
< div class = "line" > < a id = "l02069" name = "l02069" > < / a > < span class = "lineno" > 2069< / span > < span class = "comment" > // This is the slack one level before (< Info(var).trail_index).< / span > < / div >
< div class = "line" > < a id = "l02070" name = "l02070" > < / a > < span class = "lineno" > 2070< / span > slack += conflict-> GetCoefficient(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02071" name = "l02071" > < / a > < span class = "lineno" > 2071< / span > < / div >
< div class = "line" > < a id = "l02072" name = "l02072" > < / a > < span class = "lineno" > 2072< / span > < span class = "comment" > // This can' t happen at the beginning, but may happen later.< / span > < / div >
< div class = "line" > < a id = "l02073" name = "l02073" > < / a > < span class = "lineno" > 2073< / span > < span class = "comment" > // It means that even without var assigned, we still have a conflict.< / span > < / div >
< div class = "line" > < a id = "l02074" name = "l02074" > < / a > < span class = "lineno" > 2074< / span > < span class = "keywordflow" > if< / span > (slack < 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02075" name = "l02075" > < / a > < span class = "lineno" > 2075< / span > < / div >
< div class = "line" > < a id = "l02076" name = "l02076" > < / a > < span class = "lineno" > 2076< / span > < span class = "comment" > // At this point, just removing the last assignment lift the conflict.< / span > < / div >
< div class = "line" > < a id = "l02077" name = "l02077" > < / a > < span class = "lineno" > 2077< / span > < span class = "comment" > // So we can abort if the true assignment before that is at a lower level< / span > < / div >
< div class = "line" > < a id = "l02078" name = "l02078" > < / a > < span class = "lineno" > 2078< / span > < span class = "comment" > // TODO(user): Somewhat inefficient.< / span > < / div >
< div class = "line" > < a id = "l02079" name = "l02079" > < / a > < span class = "lineno" > 2079< / span > < span class = "comment" > // TODO(user): We could abort earlier...< / span > < / div >
< div class = "line" > < a id = "l02080" name = "l02080" > < / a > < span class = "lineno" > 2080< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > current_level = DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02081" name = "l02081" > < / a > < span class = "lineno" > 2081< / span > < span class = "keywordtype" > int< / span > i = trail_index;< / div >
< div class = "line" > < a id = "l02082" name = "l02082" > < / a > < span class = "lineno" > 2082< / span > < span class = "keywordflow" > while< / span > (i > = 0) {< / div >
< div class = "line" > < a id = "l02083" name = "l02083" > < / a > < span class = "lineno" > 2083< / span > < span class = "keyword" > const< / span > BooleanVariable previous_var = (*trail_)[i].Variable();< / div >
< div class = "line" > < a id = "l02084" name = "l02084" > < / a > < span class = "lineno" > 2084< / span > < span class = "keywordflow" > if< / span > (conflict-> GetCoefficient(previous_var) > 0 & & < / div >
< div class = "line" > < a id = "l02085" name = "l02085" > < / a > < span class = "lineno" > 2085< / span > trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (< / div >
< div class = "line" > < a id = "l02086" name = "l02086" > < / a > < span class = "lineno" > 2086< / span > conflict-> GetLiteral(previous_var))) {< / div >
< div class = "line" > < a id = "l02087" name = "l02087" > < / a > < span class = "lineno" > 2087< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02088" name = "l02088" > < / a > < span class = "lineno" > 2088< / span > }< / div >
< div class = "line" > < a id = "l02089" name = "l02089" > < / a > < span class = "lineno" > 2089< / span > --i;< / div >
< div class = "line" > < a id = "l02090" name = "l02090" > < / a > < span class = "lineno" > 2090< / span > }< / div >
< div class = "line" > < a id = "l02091" name = "l02091" > < / a > < span class = "lineno" > 2091< / span > < span class = "keywordflow" > if< / span > (i < 0 || DecisionLevel((*trail_)[i].Variable()) < current_level) {< / div >
< div class = "line" > < a id = "l02092" name = "l02092" > < / a > < span class = "lineno" > 2092< / span > backjump_level = i < 0 ? 0 : DecisionLevel((*trail_)[i].Variable());< / div >
< div class = "line" > < a id = "l02093" name = "l02093" > < / a > < span class = "lineno" > 2093< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02094" name = "l02094" > < / a > < span class = "lineno" > 2094< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l02095" name = "l02095" > < / a > < span class = "lineno" > 2095< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l02096" name = "l02096" > < / a > < span class = "lineno" > 2096< / span > < span class = "comment" > // We can' t abort, So resolve the current variable.< / span > < / div >
< div class = "line" > < a id = "l02097" name = "l02097" > < / a > < span class = "lineno" > 2097< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a5ed9d5f5c759afe4a008adaabd80c6f8" > AssignmentType< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ), < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_type.html#a916a0609367bae97bd6788542d4925eb" > AssignmentType::kSearchDecision< / a > );< / div >
< div class = "line" > < a id = "l02098" name = "l02098" > < / a > < span class = "lineno" > 2098< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > bool< / span > clause_used = ResolvePBConflict(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > , conflict, & slack);< / div >
< div class = "line" > < a id = "l02099" name = "l02099" > < / a > < span class = "lineno" > 2099< / span > < / div >
< div class = "line" > < a id = "l02100" name = "l02100" > < / a > < span class = "lineno" > 2100< / span > < span class = "comment" > // At this point, we have a negative slack. Note that ReduceCoefficients()< / span > < / div >
< div class = "line" > < a id = "l02101" name = "l02101" > < / a > < span class = "lineno" > 2101< / span > < span class = "comment" > // will not change it. However it may change the slack value of the next< / span > < / div >
< div class = "line" > < a id = "l02102" name = "l02102" > < / a > < span class = "lineno" > 2102< / span > < span class = "comment" > // iteration (when we will no longer take into account the true literal< / span > < / div >
< div class = "line" > < a id = "l02103" name = "l02103" > < / a > < span class = "lineno" > 2103< / span > < span class = "comment" > // with highest trail index).< / span > < / div >
< div class = "line" > < a id = "l02104" name = "l02104" > < / a > < span class = "lineno" > 2104< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l02105" name = "l02105" > < / a > < span class = "lineno" > 2105< / span > < span class = "comment" > // Note that the trail_index has already been decremented, it is why< / span > < / div >
< div class = "line" > < a id = "l02106" name = "l02106" > < / a > < span class = "lineno" > 2106< / span > < span class = "comment" > // we need the +1 in the slack computation.< / span > < / div >
< div class = "line" > < a id = "l02107" name = "l02107" > < / a > < span class = "lineno" > 2107< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > slack_only_for_debug =< / div >
< div class = "line" > < a id = "l02108" name = "l02108" > < / a > < span class = "lineno" > 2108< / span > < a class = "code hl_variable" href = "macros_8h.html#a7f536a3b33f9bed8f75734e035d30725" > DEBUG_MODE< / a > < / div >
< div class = "line" > < a id = "l02109" name = "l02109" > < / a > < span class = "lineno" > 2109< / span > ? conflict-> ComputeSlackForTrailPrefix(*trail_, trail_index + 1)< / div >
< div class = "line" > < a id = "l02110" name = "l02110" > < / a > < span class = "lineno" > 2110< / span > : < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > (0);< / div >
< div class = "line" > < a id = "l02111" name = "l02111" > < / a > < span class = "lineno" > 2111< / span > < / div >
< div class = "line" > < a id = "l02112" name = "l02112" > < / a > < span class = "lineno" > 2112< / span > < span class = "keywordflow" > if< / span > (clause_used) {< / div >
< div class = "line" > < a id = "l02113" name = "l02113" > < / a > < span class = "lineno" > 2113< / span > < span class = "comment" > // If a clause was used, we know that slack has the correct value.< / span > < / div >
< div class = "line" > < a id = "l02114" name = "l02114" > < / a > < span class = "lineno" > 2114< / span > < span class = "keywordflow" > if< / span > (!parameters_-> minimize_reduction_during_pb_resolution()) {< / div >
< div class = "line" > < a id = "l02115" name = "l02115" > < / a > < span class = "lineno" > 2115< / span > conflict-> ReduceCoefficients();< / div >
< div class = "line" > < a id = "l02116" name = "l02116" > < / a > < span class = "lineno" > 2116< / span > }< / div >
< div class = "line" > < a id = "l02117" name = "l02117" > < / a > < span class = "lineno" > 2117< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l02118" name = "l02118" > < / a > < span class = "lineno" > 2118< / span > < span class = "comment" > // TODO(user): The function below can take most of the running time on< / span > < / div >
< div class = "line" > < a id = "l02119" name = "l02119" > < / a > < span class = "lineno" > 2119< / span > < span class = "comment" > // some instances. The goal is to have slack updated to its new value< / span > < / div >
< div class = "line" > < a id = "l02120" name = "l02120" > < / a > < span class = "lineno" > 2120< / span > < span class = "comment" > // incrementally, but we are not here yet.< / span > < / div >
< div class = "line" > < a id = "l02121" name = "l02121" > < / a > < span class = "lineno" > 2121< / span > < span class = "keywordflow" > if< / span > (parameters_-> minimize_reduction_during_pb_resolution()) {< / div >
< div class = "line" > < a id = "l02122" name = "l02122" > < / a > < span class = "lineno" > 2122< / span > slack =< / div >
< div class = "line" > < a id = "l02123" name = "l02123" > < / a > < span class = "lineno" > 2123< / span > conflict-> ComputeSlackForTrailPrefix(*trail_, trail_index + 1);< / div >
< div class = "line" > < a id = "l02124" name = "l02124" > < / a > < span class = "lineno" > 2124< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l02125" name = "l02125" > < / a > < span class = "lineno" > 2125< / span > slack = conflict-> ReduceCoefficientsAndComputeSlackForTrailPrefix(< / div >
< div class = "line" > < a id = "l02126" name = "l02126" > < / a > < span class = "lineno" > 2126< / span > *trail_, trail_index + 1);< / div >
< div class = "line" > < a id = "l02127" name = "l02127" > < / a > < span class = "lineno" > 2127< / span > }< / div >
< div class = "line" > < a id = "l02128" name = "l02128" > < / a > < span class = "lineno" > 2128< / span > }< / div >
< div class = "line" > < a id = "l02129" name = "l02129" > < / a > < span class = "lineno" > 2129< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > (slack, slack_only_for_debug);< / div >
< div class = "line" > < a id = "l02130" name = "l02130" > < / a > < span class = "lineno" > 2130< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82" > CHECK_LT< / a > (slack, 0);< / div >
< div class = "line" > < a id = "l02131" name = "l02131" > < / a > < span class = "lineno" > 2131< / span > < span class = "keywordflow" > if< / span > (conflict-> Rhs() < 0) {< / div >
< div class = "line" > < a id = "l02132" name = "l02132" > < / a > < span class = "lineno" > 2132< / span > *pb_backjump_level = -1;< / div >
< div class = "line" > < a id = "l02133" name = "l02133" > < / a > < span class = "lineno" > 2133< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l02134" name = "l02134" > < / a > < span class = "lineno" > 2134< / span > }< / div >
< div class = "line" > < a id = "l02135" name = "l02135" > < / a > < span class = "lineno" > 2135< / span > }< / div >
< div class = "line" > < a id = "l02136" name = "l02136" > < / a > < span class = "lineno" > 2136< / span > }< / div >
< div class = "line" > < a id = "l02137" name = "l02137" > < / a > < span class = "lineno" > 2137< / span > < / div >
< div class = "line" > < a id = "l02138" name = "l02138" > < / a > < span class = "lineno" > 2138< / span > < span class = "comment" > // Reduce the conflit coefficients if it is not already done.< / span > < / div >
< div class = "line" > < a id = "l02139" name = "l02139" > < / a > < span class = "lineno" > 2139< / span > < span class = "comment" > // This is important to avoid integer overflow.< / span > < / div >
< div class = "line" > < a id = "l02140" name = "l02140" > < / a > < span class = "lineno" > 2140< / span > < span class = "keywordflow" > if< / span > (!parameters_-> minimize_reduction_during_pb_resolution()) {< / div >
< div class = "line" > < a id = "l02141" name = "l02141" > < / a > < span class = "lineno" > 2141< / span > conflict-> ReduceCoefficients();< / div >
< div class = "line" > < a id = "l02142" name = "l02142" > < / a > < span class = "lineno" > 2142< / span > }< / div >
< div class = "line" > < a id = "l02143" name = "l02143" > < / a > < span class = "lineno" > 2143< / span > < / div >
< div class = "line" > < a id = "l02144" name = "l02144" > < / a > < span class = "lineno" > 2144< / span > < span class = "comment" > // Double check.< / span > < / div >
< div class = "line" > < a id = "l02145" name = "l02145" > < / a > < span class = "lineno" > 2145< / span > < span class = "comment" > // The sum of the literal with level < = backjump_level must propagate.< / span > < / div >
< div class = "line" > < a id = "l02146" name = "l02146" > < / a > < span class = "lineno" > 2146< / span > std::vector< Coefficient> sum_for_le_level(backjump_level + 2, < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > (0));< / div >
< div class = "line" > < a id = "l02147" name = "l02147" > < / a > < span class = "lineno" > 2147< / span > std::vector< Coefficient> max_coeff_for_ge_level(backjump_level + 2,< / div >
< div class = "line" > < a id = "l02148" name = "l02148" > < / a > < span class = "lineno" > 2148< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > (0));< / div >
< div class = "line" > < a id = "l02149" name = "l02149" > < / a > < span class = "lineno" > 2149< / span > < span class = "keywordtype" > int< / span > size = 0;< / div >
< div class = "line" > < a id = "l02150" name = "l02150" > < / a > < span class = "lineno" > 2150< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > max_sum(0);< / div >
< div class = "line" > < a id = "l02151" name = "l02151" > < / a > < span class = "lineno" > 2151< / span > < span class = "keywordflow" > for< / span > (BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > : conflict-> PossibleNonZeros()) {< / div >
< div class = "line" > < a id = "l02152" name = "l02152" > < / a > < span class = "lineno" > 2152< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = conflict-> GetCoefficient(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02153" name = "l02153" > < / a > < span class = "lineno" > 2153< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02154" name = "l02154" > < / a > < span class = "lineno" > 2154< / span > max_sum += < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l02155" name = "l02155" > < / a > < span class = "lineno" > 2155< / span > ++size;< / div >
< div class = "line" > < a id = "l02156" name = "l02156" > < / a > < span class = "lineno" > 2156< / span > < span class = "keywordflow" > if< / span > (!trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a49e751eb6f0e9babd957889bb8e7472d" > VariableIsAssigned< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ) ||< / div >
< div class = "line" > < a id = "l02157" name = "l02157" > < / a > < span class = "lineno" > 2157< / span > DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ) > backjump_level) {< / div >
< div class = "line" > < a id = "l02158" name = "l02158" > < / a > < span class = "lineno" > 2158< / span > max_coeff_for_ge_level[backjump_level + 1] =< / div >
< div class = "line" > < a id = "l02159" name = "l02159" > < / a > < span class = "lineno" > 2159< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_coeff_for_ge_level[backjump_level + 1], < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l02160" name = "l02160" > < / a > < span class = "lineno" > 2160< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l02161" name = "l02161" > < / a > < span class = "lineno" > 2161< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02162" name = "l02162" > < / a > < span class = "lineno" > 2162< / span > < span class = "keywordflow" > if< / span > (trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (conflict-> GetLiteral(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ))) {< / div >
< div class = "line" > < a id = "l02163" name = "l02163" > < / a > < span class = "lineno" > 2163< / span > sum_for_le_level[level] += < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l02164" name = "l02164" > < / a > < span class = "lineno" > 2164< / span > }< / div >
< div class = "line" > < a id = "l02165" name = "l02165" > < / a > < span class = "lineno" > 2165< / span > max_coeff_for_ge_level[level] =< / div >
< div class = "line" > < a id = "l02166" name = "l02166" > < / a > < span class = "lineno" > 2166< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_coeff_for_ge_level[level], < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l02167" name = "l02167" > < / a > < span class = "lineno" > 2167< / span > }< / div >
< div class = "line" > < a id = "l02168" name = "l02168" > < / a > < span class = "lineno" > 2168< / span > }< / div >
< div class = "line" > < a id = "l02169" name = "l02169" > < / a > < span class = "lineno" > 2169< / span > < / div >
< div class = "line" > < a id = "l02170" name = "l02170" > < / a > < span class = "lineno" > 2170< / span > < span class = "comment" > // Compute the cumulative version.< / span > < / div >
< div class = "line" > < a id = "l02171" name = "l02171" > < / a > < span class = "lineno" > 2171< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < sum_for_le_level.size(); ++i) {< / div >
< div class = "line" > < a id = "l02172" name = "l02172" > < / a > < span class = "lineno" > 2172< / span > sum_for_le_level[i] += sum_for_le_level[i - 1];< / div >
< div class = "line" > < a id = "l02173" name = "l02173" > < / a > < span class = "lineno" > 2173< / span > }< / div >
< div class = "line" > < a id = "l02174" name = "l02174" > < / a > < span class = "lineno" > 2174< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = max_coeff_for_ge_level.size() - 2; i > = 0; --i) {< / div >
< div class = "line" > < a id = "l02175" name = "l02175" > < / a > < span class = "lineno" > 2175< / span > max_coeff_for_ge_level[i] =< / div >
< div class = "line" > < a id = "l02176" name = "l02176" > < / a > < span class = "lineno" > 2176< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_coeff_for_ge_level[i], max_coeff_for_ge_level[i + 1]);< / div >
< div class = "line" > < a id = "l02177" name = "l02177" > < / a > < span class = "lineno" > 2177< / span > }< / div >
< div class = "line" > < a id = "l02178" name = "l02178" > < / a > < span class = "lineno" > 2178< / span > < / div >
< div class = "line" > < a id = "l02179" name = "l02179" > < / a > < span class = "lineno" > 2179< / span > < span class = "comment" > // Compute first propagation level. -1 means that the problem is UNSAT.< / span > < / div >
< div class = "line" > < a id = "l02180" name = "l02180" > < / a > < span class = "lineno" > 2180< / span > < span class = "comment" > // Note that the first propagation level may be < backjump_level!< / span > < / div >
< div class = "line" > < a id = "l02181" name = "l02181" > < / a > < span class = "lineno" > 2181< / span > < span class = "keywordflow" > if< / span > (sum_for_le_level[0] > conflict-> Rhs()) {< / div >
< div class = "line" > < a id = "l02182" name = "l02182" > < / a > < span class = "lineno" > 2182< / span > *pb_backjump_level = -1;< / div >
< div class = "line" > < a id = "l02183" name = "l02183" > < / a > < span class = "lineno" > 2183< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l02184" name = "l02184" > < / a > < span class = "lineno" > 2184< / span > }< / div >
< div class = "line" > < a id = "l02185" name = "l02185" > < / a > < span class = "lineno" > 2185< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < = backjump_level; ++i) {< / div >
< div class = "line" > < a id = "l02186" name = "l02186" > < / a > < span class = "lineno" > 2186< / span > < span class = "keyword" > const< / span > < a class = "code hl_typedef" href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > Coefficient< / a > level_sum = sum_for_le_level[i];< / div >
< div class = "line" > < a id = "l02187" name = "l02187" > < / a > < span class = "lineno" > 2187< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c" > CHECK_LE< / a > (level_sum, conflict-> Rhs());< / div >
< div class = "line" > < a id = "l02188" name = "l02188" > < / a > < span class = "lineno" > 2188< / span > < span class = "keywordflow" > if< / span > (conflict-> Rhs() - level_sum < max_coeff_for_ge_level[i + 1]) {< / div >
< div class = "line" > < a id = "l02189" name = "l02189" > < / a > < span class = "lineno" > 2189< / span > *pb_backjump_level = i;< / div >
< div class = "line" > < a id = "l02190" name = "l02190" > < / a > < span class = "lineno" > 2190< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l02191" name = "l02191" > < / a > < span class = "lineno" > 2191< / span > }< / div >
< div class = "line" > < a id = "l02192" name = "l02192" > < / a > < span class = "lineno" > 2192< / span > }< / div >
< div class = "line" > < a id = "l02193" name = "l02193" > < / a > < span class = "lineno" > 2193< / span > < a class = "code hl_define" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (< a class = "code hl_variable" href = "log__severity_8h.html#acdd38e3c9f22f127d7776920e3079eda" > FATAL< / a > ) < < < span class = "stringliteral" > " The code should never reach here." < / span > ;< / div >
< div class = "line" > < a id = "l02194" name = "l02194" > < / a > < span class = "lineno" > 2194< / span > }< / div >
< div class = "line" > < a id = "l02195" name = "l02195" > < / a > < span class = "lineno" > 2195< / span > < / div >
< div class = "line" > < a id = "l02196" name = "l02196" > < / a > < span class = "lineno" > 2196< / span > < span class = "keywordtype" > void< / span > SatSolver::MinimizeConflict(< / div >
< div class = "line" > < a id = "l02197" name = "l02197" > < / a > < span class = "lineno" > 2197< / span > std::vector< Literal> * conflict,< / div >
< div class = "line" > < a id = "l02198" name = "l02198" > < / a > < span class = "lineno" > 2198< / span > std::vector< Literal> * reason_used_to_infer_the_conflict) {< / div >
< div class = "line" > < a id = "l02199" name = "l02199" > < / a > < span class = "lineno" > 2199< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l02200" name = "l02200" > < / a > < span class = "lineno" > 2200< / span > < / div >
< div class = "line" > < a id = "l02201" name = "l02201" > < / a > < span class = "lineno" > 2201< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > old_size = conflict-> size();< / div >
< div class = "line" > < a id = "l02202" name = "l02202" > < / a > < span class = "lineno" > 2202< / span > < span class = "keywordflow" > switch< / span > (parameters_-> minimization_algorithm()) {< / div >
< div class = "line" > < a id = "l02203" name = "l02203" > < / a > < span class = "lineno" > 2203< / span > < span class = "keywordflow" > case< / span > SatParameters::NONE:< / div >
< div class = "line" > < a id = "l02204" name = "l02204" > < / a > < span class = "lineno" > 2204< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l02205" name = "l02205" > < / a > < span class = "lineno" > 2205< / span > < span class = "keywordflow" > case< / span > SatParameters::SIMPLE: {< / div >
< div class = "line" > < a id = "l02206" name = "l02206" > < / a > < span class = "lineno" > 2206< / span > MinimizeConflictSimple(conflict);< / div >
< div class = "line" > < a id = "l02207" name = "l02207" > < / a > < span class = "lineno" > 2207< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02208" name = "l02208" > < / a > < span class = "lineno" > 2208< / span > }< / div >
< div class = "line" > < a id = "l02209" name = "l02209" > < / a > < span class = "lineno" > 2209< / span > < span class = "keywordflow" > case< / span > SatParameters::RECURSIVE: {< / div >
< div class = "line" > < a id = "l02210" name = "l02210" > < / a > < span class = "lineno" > 2210< / span > MinimizeConflictRecursively(conflict);< / div >
< div class = "line" > < a id = "l02211" name = "l02211" > < / a > < span class = "lineno" > 2211< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02212" name = "l02212" > < / a > < span class = "lineno" > 2212< / span > }< / div >
< div class = "line" > < a id = "l02213" name = "l02213" > < / a > < span class = "lineno" > 2213< / span > < span class = "keywordflow" > case< / span > SatParameters::EXPERIMENTAL: {< / div >
< div class = "line" > < a id = "l02214" name = "l02214" > < / a > < span class = "lineno" > 2214< / span > MinimizeConflictExperimental(conflict);< / div >
< div class = "line" > < a id = "l02215" name = "l02215" > < / a > < span class = "lineno" > 2215< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02216" name = "l02216" > < / a > < span class = "lineno" > 2216< / span > }< / div >
< div class = "line" > < a id = "l02217" name = "l02217" > < / a > < span class = "lineno" > 2217< / span > }< / div >
< div class = "line" > < a id = "l02218" name = "l02218" > < / a > < span class = "lineno" > 2218< / span > < span class = "keywordflow" > if< / span > (conflict-> size() < old_size) {< / div >
< div class = "line" > < a id = "l02219" name = "l02219" > < / a > < span class = "lineno" > 2219< / span > ++counters_.num_minimizations;< / div >
< div class = "line" > < a id = "l02220" name = "l02220" > < / a > < span class = "lineno" > 2220< / span > counters_.num_literals_removed += old_size - conflict-> size();< / div >
< div class = "line" > < a id = "l02221" name = "l02221" > < / a > < span class = "lineno" > 2221< / span > }< / div >
< div class = "line" > < a id = "l02222" name = "l02222" > < / a > < span class = "lineno" > 2222< / span > }< / div >
< div class = "line" > < a id = "l02223" name = "l02223" > < / a > < span class = "lineno" > 2223< / span > < / div >
< div class = "line" > < a id = "l02224" name = "l02224" > < / a > < span class = "lineno" > 2224< / span > < span class = "comment" > // This simple version just looks for any literal that is directly infered by< / span > < / div >
< div class = "line" > < a id = "l02225" name = "l02225" > < / a > < span class = "lineno" > 2225< / span > < span class = "comment" > // other literals of the conflict. It is directly infered if the literals of its< / span > < / div >
< div class = "line" > < a id = "l02226" name = "l02226" > < / a > < span class = "lineno" > 2226< / span > < span class = "comment" > // reason clause are either from level 0 or from the conflict itself.< / span > < / div >
< div class = "line" > < a id = "l02227" name = "l02227" > < / a > < span class = "lineno" > 2227< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l02228" name = "l02228" > < / a > < span class = "lineno" > 2228< / span > < span class = "comment" > // Note that because of the assignment structure, there is no need to process< / span > < / div >
< div class = "line" > < a id = "l02229" name = "l02229" > < / a > < span class = "lineno" > 2229< / span > < span class = "comment" > // the literals of the conflict in order. While exploring the reason for a< / span > < / div >
< div class = "line" > < a id = "l02230" name = "l02230" > < / a > < span class = "lineno" > 2230< / span > < span class = "comment" > // literal assignment, there will be no cycles.< / span > < / div >
< div class = "line" > < a id = "l02231" name = "l02231" > < / a > < span class = "lineno" > 2231< / span > < span class = "keywordtype" > void< / span > SatSolver::MinimizeConflictSimple(std::vector< Literal> * conflict) {< / div >
< div class = "line" > < a id = "l02232" name = "l02232" > < / a > < span class = "lineno" > 2232< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l02233" name = "l02233" > < / a > < span class = "lineno" > 2233< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > current_level = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ();< / div >
< div class = "line" > < a id = "l02234" name = "l02234" > < / a > < span class = "lineno" > 2234< / span > < / div >
< div class = "line" > < a id = "l02235" name = "l02235" > < / a > < span class = "lineno" > 2235< / span > < span class = "comment" > // Note that is_marked_ is already initialized and that we can start at 1< / span > < / div >
< div class = "line" > < a id = "l02236" name = "l02236" > < / a > < span class = "lineno" > 2236< / span > < span class = "comment" > // since the first literal of the conflict is the 1-UIP literal.< / span > < / div >
< div class = "line" > < a id = "l02237" name = "l02237" > < / a > < span class = "lineno" > 2237< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = 1;< / div >
< div class = "line" > < a id = "l02238" name = "l02238" > < / a > < span class = "lineno" > 2238< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < conflict-> size(); ++i) {< / div >
< div class = "line" > < a id = "l02239" name = "l02239" > < / a > < span class = "lineno" > 2239< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = (*conflict)[i].Variable();< / div >
< div class = "line" > < a id = "l02240" name = "l02240" > < / a > < span class = "lineno" > 2240< / span > < span class = "keywordtype" > bool< / span > can_be_removed = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l02241" name = "l02241" > < / a > < span class = "lineno" > 2241< / span > < span class = "keywordflow" > if< / span > (DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ) != current_level) {< / div >
< div class = "line" > < a id = "l02242" name = "l02242" > < / a > < span class = "lineno" > 2242< / span > < span class = "comment" > // It is important not to call Reason(var) when it can be avoided.< / span > < / div >
< div class = "line" > < a id = "l02243" name = "l02243" > < / a > < span class = "lineno" > 2243< / span > < span class = "keyword" > const< / span > absl::Span< const Literal> reason = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02244" name = "l02244" > < / a > < span class = "lineno" > 2244< / span > < span class = "keywordflow" > if< / span > (!reason.empty()) {< / div >
< div class = "line" > < a id = "l02245" name = "l02245" > < / a > < span class = "lineno" > 2245< / span > can_be_removed = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l02246" name = "l02246" > < / a > < span class = "lineno" > 2246< / span > < span class = "keywordflow" > for< / span > (Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : reason) {< / div >
< div class = "line" > < a id = "l02247" name = "l02247" > < / a > < span class = "lineno" > 2247< / span > < span class = "keywordflow" > if< / span > (DecisionLevel(< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()) == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02248" name = "l02248" > < / a > < span class = "lineno" > 2248< / span > < span class = "keywordflow" > if< / span > (!is_marked_[< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()]) {< / div >
< div class = "line" > < a id = "l02249" name = "l02249" > < / a > < span class = "lineno" > 2249< / span > can_be_removed = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l02250" name = "l02250" > < / a > < span class = "lineno" > 2250< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02251" name = "l02251" > < / a > < span class = "lineno" > 2251< / span > }< / div >
< div class = "line" > < a id = "l02252" name = "l02252" > < / a > < span class = "lineno" > 2252< / span > }< / div >
< div class = "line" > < a id = "l02253" name = "l02253" > < / a > < span class = "lineno" > 2253< / span > }< / div >
< div class = "line" > < a id = "l02254" name = "l02254" > < / a > < span class = "lineno" > 2254< / span > }< / div >
< div class = "line" > < a id = "l02255" name = "l02255" > < / a > < span class = "lineno" > 2255< / span > < span class = "keywordflow" > if< / span > (!can_be_removed) {< / div >
< div class = "line" > < a id = "l02256" name = "l02256" > < / a > < span class = "lineno" > 2256< / span > (*conflict)[< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ] = (*conflict)[i];< / div >
< div class = "line" > < a id = "l02257" name = "l02257" > < / a > < span class = "lineno" > 2257< / span > ++< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ;< / div >
< div class = "line" > < a id = "l02258" name = "l02258" > < / a > < span class = "lineno" > 2258< / span > }< / div >
< div class = "line" > < a id = "l02259" name = "l02259" > < / a > < span class = "lineno" > 2259< / span > }< / div >
< div class = "line" > < a id = "l02260" name = "l02260" > < / a > < span class = "lineno" > 2260< / span > conflict-> erase(conflict-> begin() + < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > , conflict-> end());< / div >
< div class = "line" > < a id = "l02261" name = "l02261" > < / a > < span class = "lineno" > 2261< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l02262" name = "l02262" > < / a > < span class = "lineno" > 2262< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l02263" name = "l02263" > < / a > < span class = "lineno" > 2263< / span > < span class = "comment" > // This is similar to MinimizeConflictSimple() except that for each literal of< / span > < / div >
< div class = "line" > < a id = "l02264" name = "l02264" > < / a > < span class = "lineno" > 2264< / span > < span class = "comment" > // the conflict, the literals of its reason are recursively expanded using their< / span > < / div >
< div class = "line" > < a id = "l02265" name = "l02265" > < / a > < span class = "lineno" > 2265< / span > < span class = "comment" > // reason and so on. The recursion loops until we show that the initial literal< / span > < / div >
< div class = "line" > < a id = "l02266" name = "l02266" > < / a > < span class = "lineno" > 2266< / span > < span class = "comment" > // can be infered from the conflict variables alone, or if we show that this is< / span > < / div >
< div class = "line" > < a id = "l02267" name = "l02267" > < / a > < span class = "lineno" > 2267< / span > < span class = "comment" > // not the case. The result of any variable expansion will be cached in order< / span > < / div >
< div class = "line" > < a id = "l02268" name = "l02268" > < / a > < span class = "lineno" > 2268< / span > < span class = "comment" > // not to be expended again.< / span > < / div >
< div class = "line" > < a id = "l02269" name = "l02269" > < / a > < span class = "lineno" > 2269< / span > < span class = "keywordtype" > void< / span > SatSolver::MinimizeConflictRecursively(std::vector< Literal> * conflict) {< / div >
< div class = "line" > < a id = "l02270" name = "l02270" > < / a > < span class = "lineno" > 2270< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l02271" name = "l02271" > < / a > < span class = "lineno" > 2271< / span > < / div >
< div class = "line" > < a id = "l02272" name = "l02272" > < / a > < span class = "lineno" > 2272< / span > < span class = "comment" > // is_marked_ will contains all the conflict literals plus the literals that< / span > < / div >
< div class = "line" > < a id = "l02273" name = "l02273" > < / a > < span class = "lineno" > 2273< / span > < span class = "comment" > // have been shown to depends only on the conflict literals. is_independent_< / span > < / div >
< div class = "line" > < a id = "l02274" name = "l02274" > < / a > < span class = "lineno" > 2274< / span > < span class = "comment" > // will contains the literals that have been shown NOT to depends only on the< / span > < / div >
< div class = "line" > < a id = "l02275" name = "l02275" > < / a > < span class = "lineno" > 2275< / span > < span class = "comment" > // conflict literals. The too set are exclusive for non-conflict literals, but< / span > < / div >
< div class = "line" > < a id = "l02276" name = "l02276" > < / a > < span class = "lineno" > 2276< / span > < span class = "comment" > // a conflict literal (which is always marked) can be independent if we showed< / span > < / div >
< div class = "line" > < a id = "l02277" name = "l02277" > < / a > < span class = "lineno" > 2277< / span > < span class = "comment" > // that it can' t be removed from the clause.< / span > < / div >
< div class = "line" > < a id = "l02278" name = "l02278" > < / a > < span class = "lineno" > 2278< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l02279" name = "l02279" > < / a > < span class = "lineno" > 2279< / span > < span class = "comment" > // Optimization: There is no need to call is_marked_.ClearAndResize() or to< / span > < / div >
< div class = "line" > < a id = "l02280" name = "l02280" > < / a > < span class = "lineno" > 2280< / span > < span class = "comment" > // mark the conflict literals since this was already done by< / span > < / div >
< div class = "line" > < a id = "l02281" name = "l02281" > < / a > < span class = "lineno" > 2281< / span > < span class = "comment" > // ComputeFirstUIPConflict().< / span > < / div >
< div class = "line" > < a id = "l02282" name = "l02282" > < / a > < span class = "lineno" > 2282< / span > is_independent_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > ClearAndResize< / a > (num_variables_);< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l02283" name = "l02283" > < / a > < span class = "lineno" > 2283< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l02284" name = "l02284" > < / a > < span class = "lineno" > 2284< / span > < span class = "comment" > // min_trail_index_per_level_ will always be reset to all< / span > < / div >
< div class = "line" > < a id = "l02285" name = "l02285" > < / a > < span class = "lineno" > 2285< / span > < span class = "comment" > // std::numeric_limits< int> ::max() at the end. This is used to prune the< / span > < / div >
< div class = "line" > < a id = "l02286" name = "l02286" > < / a > < span class = "lineno" > 2286< / span > < span class = "comment" > // search because any literal at a given level with an index smaller or equal< / span > < / div >
< div class = "line" > < a id = "l02287" name = "l02287" > < / a > < span class = "lineno" > 2287< / span > < span class = "comment" > // to min_trail_index_per_level_[level] can' t be redundant.< / span > < / div >
< div class = "line" > < a id = "l02288" name = "l02288" > < / a > < span class = "lineno" > 2288< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () > = min_trail_index_per_level_.size()) {< / div >
< div class = "line" > < a id = "l02289" name = "l02289" > < / a > < span class = "lineno" > 2289< / span > min_trail_index_per_level_.resize(< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () + 1,< / div >
< div class = "line" > < a id = "l02290" name = "l02290" > < / a > < span class = "lineno" > 2290< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< int> ::max< / a > ());< / div >
< div class = "line" > < a id = "l02291" name = "l02291" > < / a > < span class = "lineno" > 2291< / span > }< / div >
< div class = "line" > < a id = "l02292" name = "l02292" > < / a > < span class = "lineno" > 2292< / span > < / div >
< div class = "line" > < a id = "l02293" name = "l02293" > < / a > < span class = "lineno" > 2293< / span > < span class = "comment" > // Compute the number of variable at each decision levels. This will be used< / span > < / div >
< div class = "line" > < a id = "l02294" name = "l02294" > < / a > < span class = "lineno" > 2294< / span > < span class = "comment" > // to pruned the DFS because we know that the minimized conflict will have at< / span > < / div >
< div class = "line" > < a id = "l02295" name = "l02295" > < / a > < span class = "lineno" > 2295< / span > < span class = "comment" > // least one variable of each decision levels. Because such variable can' t be< / span > < / div >
< div class = "line" > < a id = "l02296" name = "l02296" > < / a > < span class = "lineno" > 2296< / span > < span class = "comment" > // eliminated using lower decision levels variable otherwise it will have been< / span > < / div >
< div class = "line" > < a id = "l02297" name = "l02297" > < / a > < span class = "lineno" > 2297< / span > < span class = "comment" > // propagated.< / span > < / div >
< div class = "line" > < a id = "l02298" name = "l02298" > < / a > < span class = "lineno" > 2298< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l02299" name = "l02299" > < / a > < span class = "lineno" > 2299< / span > < span class = "comment" > // Note(user): Because is_marked_ may actually contains literals that are< / span > < / div >
< div class = "line" > < a id = "l02300" name = "l02300" > < / a > < span class = "lineno" > 2300< / span > < span class = "comment" > // implied if the 1-UIP literal is false, we can' t just iterate on the< / span > < / div >
< div class = "line" > < a id = "l02301" name = "l02301" > < / a > < span class = "lineno" > 2301< / span > < span class = "comment" > // variables of the conflict here.< / span > < / div >
< div class = "line" > < a id = "l02302" name = "l02302" > < / a > < span class = "lineno" > 2302< / span > < span class = "keywordflow" > for< / span > (BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > : is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a7187b794b93178bdf96f632d1f5d8c03" > PositionsSetAtLeastOnce< / a > ()) {< / div >
< div class = "line" > < a id = "l02303" name = "l02303" > < / a > < span class = "lineno" > 2303< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02304" name = "l02304" > < / a > < span class = "lineno" > 2304< / span > min_trail_index_per_level_[level] = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (< / div >
< div class = "line" > < a id = "l02305" name = "l02305" > < / a > < span class = "lineno" > 2305< / span > min_trail_index_per_level_[level], trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ).< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_info.html#a0f2d611d5c2d56f60646827438acf3af" > trail_index< / a > );< / div >
< div class = "line" > < a id = "l02306" name = "l02306" > < / a > < span class = "lineno" > 2306< / span > }< / div >
< div class = "line" > < a id = "l02307" name = "l02307" > < / a > < span class = "lineno" > 2307< / span > < / div >
< div class = "line" > < a id = "l02308" name = "l02308" > < / a > < span class = "lineno" > 2308< / span > < span class = "comment" > // Remove the redundant variable from the conflict. That is the ones that can< / span > < / div >
< div class = "line" > < a id = "l02309" name = "l02309" > < / a > < span class = "lineno" > 2309< / span > < span class = "comment" > // be infered by some other variables in the conflict.< / span > < / div >
< div class = "line" > < a id = "l02310" name = "l02310" > < / a > < span class = "lineno" > 2310< / span > < span class = "comment" > // Note that we can skip the first position since this is the 1-UIP.< / span > < / div >
< div class = "line" > < a id = "l02311" name = "l02311" > < / a > < span class = "lineno" > 2311< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = 1;< / div >
< div class = "line" > < a id = "l02312" name = "l02312" > < / a > < span class = "lineno" > 2312< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < conflict-> size(); ++i) {< / div >
< div class = "line" > < a id = "l02313" name = "l02313" > < / a > < span class = "lineno" > 2313< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = (*conflict)[i].Variable();< / div >
< div class = "line" > < a id = "l02314" name = "l02314" > < / a > < span class = "lineno" > 2314< / span > < span class = "keyword" > const< / span > AssignmentInfo& info = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02315" name = "l02315" > < / a > < span class = "lineno" > 2315< / span > < span class = "keywordflow" > if< / span > (time_limit_-> < a class = "code hl_function" href = "classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca" > LimitReached< / a > () ||< / div >
< div class = "line" > < a id = "l02316" name = "l02316" > < / a > < span class = "lineno" > 2316< / span > info.type == < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_type.html#a916a0609367bae97bd6788542d4925eb" > AssignmentType::kSearchDecision< / a > ||< / div >
< div class = "line" > < a id = "l02317" name = "l02317" > < / a > < span class = "lineno" > 2317< / span > info.trail_index < = min_trail_index_per_level_[info.level] ||< / div >
< div class = "line" > < a id = "l02318" name = "l02318" > < / a > < span class = "lineno" > 2318< / span > !CanBeInferedFromConflictVariables(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > )) {< / div >
< div class = "line" > < a id = "l02319" name = "l02319" > < / a > < span class = "lineno" > 2319< / span > < span class = "comment" > // Mark the conflict variable as independent. Note that is_marked_[var]< / span > < / div >
< div class = "line" > < a id = "l02320" name = "l02320" > < / a > < span class = "lineno" > 2320< / span > < span class = "comment" > // will still be true.< / span > < / div >
< div class = "line" > < a id = "l02321" name = "l02321" > < / a > < span class = "lineno" > 2321< / span > is_independent_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02322" name = "l02322" > < / a > < span class = "lineno" > 2322< / span > (*conflict)[< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ] = (*conflict)[i];< / div >
< div class = "line" > < a id = "l02323" name = "l02323" > < / a > < span class = "lineno" > 2323< / span > ++< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ;< / div >
< div class = "line" > < a id = "l02324" name = "l02324" > < / a > < span class = "lineno" > 2324< / span > }< / div >
< div class = "line" > < a id = "l02325" name = "l02325" > < / a > < span class = "lineno" > 2325< / span > }< / div >
< div class = "line" > < a id = "l02326" name = "l02326" > < / a > < span class = "lineno" > 2326< / span > conflict-> resize(< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > );< / div >
< div class = "line" > < a id = "l02327" name = "l02327" > < / a > < span class = "lineno" > 2327< / span > < / div >
< div class = "line" > < a id = "l02328" name = "l02328" > < / a > < span class = "lineno" > 2328< / span > < span class = "comment" > // Reset min_trail_index_per_level_. We use the sparse version only if it< / span > < / div >
< div class = "line" > < a id = "l02329" name = "l02329" > < / a > < span class = "lineno" > 2329< / span > < span class = "comment" > // involves less than half the size of min_trail_index_per_level_.< / span > < / div >
< div class = "line" > < a id = "l02330" name = "l02330" > < / a > < span class = "lineno" > 2330< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > threshold = min_trail_index_per_level_.size() / 2;< / div >
< div class = "line" > < a id = "l02331" name = "l02331" > < / a > < span class = "lineno" > 2331< / span > < span class = "keywordflow" > if< / span > (is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a7187b794b93178bdf96f632d1f5d8c03" > PositionsSetAtLeastOnce< / a > ().size() < threshold) {< / div >
< div class = "line" > < a id = "l02332" name = "l02332" > < / a > < span class = "lineno" > 2332< / span > < span class = "keywordflow" > for< / span > (BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > : is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a7187b794b93178bdf96f632d1f5d8c03" > PositionsSetAtLeastOnce< / a > ()) {< / div >
< div class = "line" > < a id = "l02333" name = "l02333" > < / a > < span class = "lineno" > 2333< / span > min_trail_index_per_level_[DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > )] =< / div >
< div class = "line" > < a id = "l02334" name = "l02334" > < / a > < span class = "lineno" > 2334< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< int> ::max< / a > ();< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l02335" name = "l02335" > < / a > < span class = "lineno" > 2335< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l02336" name = "l02336" > < / a > < span class = "lineno" > 2336< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l02337" name = "l02337" > < / a > < span class = "lineno" > 2337< / span > min_trail_index_per_level_.clear();< / div >
< div class = "line" > < a id = "l02338" name = "l02338" > < / a > < span class = "lineno" > 2338< / span > }< / div >
< div class = "line" > < a id = "l02339" name = "l02339" > < / a > < span class = "lineno" > 2339< / span > }< / div >
< div class = "line" > < a id = "l02340" name = "l02340" > < / a > < span class = "lineno" > 2340< / span > < / div >
< div class = "line" > < a id = "l02341" name = "l02341" > < / a > < span class = "lineno" > 2341< / span > < span class = "keywordtype" > bool< / span > SatSolver::CanBeInferedFromConflictVariables(BooleanVariable variable) {< / div >
< div class = "line" > < a id = "l02342" name = "l02342" > < / a > < span class = "lineno" > 2342< / span > < span class = "comment" > // Test for an already processed variable with the same reason.< / span > < / div >
< div class = "line" > < a id = "l02343" name = "l02343" > < / a > < span class = "lineno" > 2343< / span > {< / div >
< div class = "line" > < a id = "l02344" name = "l02344" > < / a > < span class = "lineno" > 2344< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (is_marked_[variable]);< / div >
< div class = "line" > < a id = "l02345" name = "l02345" > < / a > < span class = "lineno" > 2345< / span > < span class = "keyword" > const< / span > BooleanVariable v =< / div >
< div class = "line" > < a id = "l02346" name = "l02346" > < / a > < span class = "lineno" > 2346< / span > same_reason_identifier_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#a85a00c2877e3b249951022638dda5642" > FirstVariableWithSameReason< / a > (variable);< / div >
< div class = "line" > < a id = "l02347" name = "l02347" > < / a > < span class = "lineno" > 2347< / span > < span class = "keywordflow" > if< / span > (v != variable) < span class = "keywordflow" > return< / span > !is_independent_[v];< / div >
< div class = "line" > < a id = "l02348" name = "l02348" > < / a > < span class = "lineno" > 2348< / span > }< / div >
< div class = "line" > < a id = "l02349" name = "l02349" > < / a > < span class = "lineno" > 2349< / span > < / div >
< div class = "line" > < a id = "l02350" name = "l02350" > < / a > < span class = "lineno" > 2350< / span > < span class = "comment" > // This function implement an iterative DFS from the given variable. It uses< / span > < / div >
< div class = "line" > < a id = "l02351" name = "l02351" > < / a > < span class = "lineno" > 2351< / span > < span class = "comment" > // the reason clause as adjacency lists. dfs_stack_ can be seens as the< / span > < / div >
< div class = "line" > < a id = "l02352" name = "l02352" > < / a > < span class = "lineno" > 2352< / span > < span class = "comment" > // recursive call stack of the variable we are currently processing. All its< / span > < / div >
< div class = "line" > < a id = "l02353" name = "l02353" > < / a > < span class = "lineno" > 2353< / span > < span class = "comment" > // adjacent variable will be pushed into variable_to_process_, and we will< / span > < / div >
< div class = "line" > < a id = "l02354" name = "l02354" > < / a > < span class = "lineno" > 2354< / span > < span class = "comment" > // then dequeue them one by one and process them.< / span > < / div >
< div class = "line" > < a id = "l02355" name = "l02355" > < / a > < span class = "lineno" > 2355< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l02356" name = "l02356" > < / a > < span class = "lineno" > 2356< / span > < span class = "comment" > // Note(user): As of 03/2014, --cpu_profile seems to indicate that using< / span > < / div >
< div class = "line" > < a id = "l02357" name = "l02357" > < / a > < span class = "lineno" > 2357< / span > < span class = "comment" > // dfs_stack_.assign(1, variable) is slower. My explanation is that the< / span > < / div >
< div class = "line" > < a id = "l02358" name = "l02358" > < / a > < span class = "lineno" > 2358< / span > < span class = "comment" > // function call is not inlined.< / span > < / div >
< div class = "line" > < a id = "l02359" name = "l02359" > < / a > < span class = "lineno" > 2359< / span > dfs_stack_.clear();< / div >
< div class = "line" > < a id = "l02360" name = "l02360" > < / a > < span class = "lineno" > 2360< / span > dfs_stack_.push_back(variable);< / div >
< div class = "line" > < a id = "l02361" name = "l02361" > < / a > < span class = "lineno" > 2361< / span > variable_to_process_.clear();< / div >
< div class = "line" > < a id = "l02362" name = "l02362" > < / a > < span class = "lineno" > 2362< / span > variable_to_process_.push_back(variable);< / div >
< div class = "line" > < a id = "l02363" name = "l02363" > < / a > < span class = "lineno" > 2363< / span > < / div >
< div class = "line" > < a id = "l02364" name = "l02364" > < / a > < span class = "lineno" > 2364< / span > < span class = "comment" > // First we expand the reason for the given variable.< / span > < / div >
< div class = "line" > < a id = "l02365" name = "l02365" > < / a > < span class = "lineno" > 2365< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (variable)) {< / div >
< div class = "line" > < a id = "l02366" name = "l02366" > < / a > < span class = "lineno" > 2366< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable();< / div >
< div class = "line" > < a id = "l02367" name = "l02367" > < / a > < span class = "lineno" > 2367< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > , variable);< / div >
< div class = "line" > < a id = "l02368" name = "l02368" > < / a > < span class = "lineno" > 2368< / span > < span class = "keywordflow" > if< / span > (is_marked_[< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02369" name = "l02369" > < / a > < span class = "lineno" > 2369< / span > < span class = "keyword" > const< / span > AssignmentInfo& info = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02370" name = "l02370" > < / a > < span class = "lineno" > 2370< / span > < span class = "keywordflow" > if< / span > (info.level == 0) {< / div >
< div class = "line" > < a id = "l02371" name = "l02371" > < / a > < span class = "lineno" > 2371< / span > < span class = "comment" > // Note that this is not needed if the solver is not configured to produce< / span > < / div >
< div class = "line" > < a id = "l02372" name = "l02372" > < / a > < span class = "lineno" > 2372< / span > < span class = "comment" > // an unsat proof. However, the (level == 0) test should always be false< / span > < / div >
< div class = "line" > < a id = "l02373" name = "l02373" > < / a > < span class = "lineno" > 2373< / span > < span class = "comment" > // in this case because there will never be literals of level zero in any< / span > < / div >
< div class = "line" > < a id = "l02374" name = "l02374" > < / a > < span class = "lineno" > 2374< / span > < span class = "comment" > // reason when we don' t want a proof.< / span > < / div >
< div class = "line" > < a id = "l02375" name = "l02375" > < / a > < span class = "lineno" > 2375< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02376" name = "l02376" > < / a > < span class = "lineno" > 2376< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02377" name = "l02377" > < / a > < span class = "lineno" > 2377< / span > }< / div >
< div class = "line" > < a id = "l02378" name = "l02378" > < / a > < span class = "lineno" > 2378< / span > < span class = "keywordflow" > if< / span > (info.trail_index < = min_trail_index_per_level_[info.level] ||< / div >
< div class = "line" > < a id = "l02379" name = "l02379" > < / a > < span class = "lineno" > 2379< / span > info.type == < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_type.html#a916a0609367bae97bd6788542d4925eb" > AssignmentType::kSearchDecision< / a > || is_independent_[< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ]) {< / div >
< div class = "line" > < a id = "l02380" name = "l02380" > < / a > < span class = "lineno" > 2380< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l02381" name = "l02381" > < / a > < span class = "lineno" > 2381< / span > }< / div >
< div class = "line" > < a id = "l02382" name = "l02382" > < / a > < span class = "lineno" > 2382< / span > variable_to_process_.push_back(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02383" name = "l02383" > < / a > < span class = "lineno" > 2383< / span > }< / div >
< div class = "line" > < a id = "l02384" name = "l02384" > < / a > < span class = "lineno" > 2384< / span > < / div >
< div class = "line" > < a id = "l02385" name = "l02385" > < / a > < span class = "lineno" > 2385< / span > < span class = "comment" > // Then we start the DFS.< / span > < / div >
< div class = "line" > < a id = "l02386" name = "l02386" > < / a > < span class = "lineno" > 2386< / span > < span class = "keywordflow" > while< / span > (!variable_to_process_.empty()) {< / div >
< div class = "line" > < a id = "l02387" name = "l02387" > < / a > < span class = "lineno" > 2387< / span > < span class = "keyword" > const< / span > BooleanVariable current_var = variable_to_process_.back();< / div >
< div class = "line" > < a id = "l02388" name = "l02388" > < / a > < span class = "lineno" > 2388< / span > < span class = "keywordflow" > if< / span > (current_var == dfs_stack_.back()) {< / div >
< div class = "line" > < a id = "l02389" name = "l02389" > < / a > < span class = "lineno" > 2389< / span > < span class = "comment" > // We finished the DFS of the variable dfs_stack_.back(), this can be seen< / span > < / div >
< div class = "line" > < a id = "l02390" name = "l02390" > < / a > < span class = "lineno" > 2390< / span > < span class = "comment" > // as a recursive call terminating.< / span > < / div >
< div class = "line" > < a id = "l02391" name = "l02391" > < / a > < span class = "lineno" > 2391< / span > < span class = "keywordflow" > if< / span > (dfs_stack_.size() > 1) {< / div >
< div class = "line" > < a id = "l02392" name = "l02392" > < / a > < span class = "lineno" > 2392< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (!is_marked_[current_var]);< / div >
< div class = "line" > < a id = "l02393" name = "l02393" > < / a > < span class = "lineno" > 2393< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (current_var);< / div >
< div class = "line" > < a id = "l02394" name = "l02394" > < / a > < span class = "lineno" > 2394< / span > }< / div >
< div class = "line" > < a id = "l02395" name = "l02395" > < / a > < span class = "lineno" > 2395< / span > variable_to_process_.pop_back();< / div >
< div class = "line" > < a id = "l02396" name = "l02396" > < / a > < span class = "lineno" > 2396< / span > dfs_stack_.pop_back();< / div >
< div class = "line" > < a id = "l02397" name = "l02397" > < / a > < span class = "lineno" > 2397< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02398" name = "l02398" > < / a > < span class = "lineno" > 2398< / span > }< / div >
< div class = "line" > < a id = "l02399" name = "l02399" > < / a > < span class = "lineno" > 2399< / span > < / div >
< div class = "line" > < a id = "l02400" name = "l02400" > < / a > < span class = "lineno" > 2400< / span > < span class = "comment" > // If this variable became marked since the we pushed it, we can skip it.< / span > < / div >
< div class = "line" > < a id = "l02401" name = "l02401" > < / a > < span class = "lineno" > 2401< / span > < span class = "keywordflow" > if< / span > (is_marked_[current_var]) {< / div >
< div class = "line" > < a id = "l02402" name = "l02402" > < / a > < span class = "lineno" > 2402< / span > variable_to_process_.pop_back();< / div >
< div class = "line" > < a id = "l02403" name = "l02403" > < / a > < span class = "lineno" > 2403< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02404" name = "l02404" > < / a > < span class = "lineno" > 2404< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l02405" name = "l02405" > < / a > < span class = "lineno" > 2405< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l02406" name = "l02406" > < / a > < span class = "lineno" > 2406< / span > < span class = "comment" > // This case will never be encountered since we abort right away as soon< / span > < / div >
< div class = "line" > < a id = "l02407" name = "l02407" > < / a > < span class = "lineno" > 2407< / span > < span class = "comment" > // as an independent variable is found.< / span > < / div >
< div class = "line" > < a id = "l02408" name = "l02408" > < / a > < span class = "lineno" > 2408< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (!is_independent_[current_var]);< / div >
< div class = "line" > < a id = "l02409" name = "l02409" > < / a > < span class = "lineno" > 2409< / span > < / div >
< div class = "line" > < a id = "l02410" name = "l02410" > < / a > < span class = "lineno" > 2410< / span > < span class = "comment" > // Test for an already processed variable with the same reason.< / span > < / div >
< div class = "line" > < a id = "l02411" name = "l02411" > < / a > < span class = "lineno" > 2411< / span > {< / div >
< div class = "line" > < a id = "l02412" name = "l02412" > < / a > < span class = "lineno" > 2412< / span > < span class = "keyword" > const< / span > BooleanVariable v =< / div >
< div class = "line" > < a id = "l02413" name = "l02413" > < / a > < span class = "lineno" > 2413< / span > same_reason_identifier_.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#a85a00c2877e3b249951022638dda5642" > FirstVariableWithSameReason< / a > (current_var);< / div >
< div class = "line" > < a id = "l02414" name = "l02414" > < / a > < span class = "lineno" > 2414< / span > < span class = "keywordflow" > if< / span > (v != current_var) {< / div >
< div class = "line" > < a id = "l02415" name = "l02415" > < / a > < span class = "lineno" > 2415< / span > < span class = "keywordflow" > if< / span > (is_independent_[v]) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02416" name = "l02416" > < / a > < span class = "lineno" > 2416< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (is_marked_[v]);< / div >
< div class = "line" > < a id = "l02417" name = "l02417" > < / a > < span class = "lineno" > 2417< / span > variable_to_process_.pop_back();< / div >
< div class = "line" > < a id = "l02418" name = "l02418" > < / a > < span class = "lineno" > 2418< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02419" name = "l02419" > < / a > < span class = "lineno" > 2419< / span > }< / div >
< div class = "line" > < a id = "l02420" name = "l02420" > < / a > < span class = "lineno" > 2420< / span > }< / div >
< div class = "line" > < a id = "l02421" name = "l02421" > < / a > < span class = "lineno" > 2421< / span > < / div >
< div class = "line" > < a id = "l02422" name = "l02422" > < / a > < span class = "lineno" > 2422< / span > < span class = "comment" > // Expand the variable. This can be seen as making a recursive call.< / span > < / div >
< div class = "line" > < a id = "l02423" name = "l02423" > < / a > < span class = "lineno" > 2423< / span > dfs_stack_.push_back(current_var);< / div >
< div class = "line" > < a id = "l02424" name = "l02424" > < / a > < span class = "lineno" > 2424< / span > < span class = "keywordtype" > bool< / span > abort_early = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l02425" name = "l02425" > < / a > < span class = "lineno" > 2425< / span > < span class = "keywordflow" > for< / span > (Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (current_var)) {< / div >
< div class = "line" > < a id = "l02426" name = "l02426" > < / a > < span class = "lineno" > 2426< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable();< / div >
< div class = "line" > < a id = "l02427" name = "l02427" > < / a > < span class = "lineno" > 2427< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > , current_var);< / div >
< div class = "line" > < a id = "l02428" name = "l02428" > < / a > < span class = "lineno" > 2428< / span > < span class = "keyword" > const< / span > AssignmentInfo& info = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > Info< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02429" name = "l02429" > < / a > < span class = "lineno" > 2429< / span > < span class = "keywordflow" > if< / span > (info.level == 0 || is_marked_[< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02430" name = "l02430" > < / a > < span class = "lineno" > 2430< / span > < span class = "keywordflow" > if< / span > (info.trail_index < = min_trail_index_per_level_[info.level] ||< / div >
< div class = "line" > < a id = "l02431" name = "l02431" > < / a > < span class = "lineno" > 2431< / span > info.type == < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_assignment_type.html#a916a0609367bae97bd6788542d4925eb" > AssignmentType::kSearchDecision< / a > ||< / div >
< div class = "line" > < a id = "l02432" name = "l02432" > < / a > < span class = "lineno" > 2432< / span > is_independent_[< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ]) {< / div >
< div class = "line" > < a id = "l02433" name = "l02433" > < / a > < span class = "lineno" > 2433< / span > abort_early = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l02434" name = "l02434" > < / a > < span class = "lineno" > 2434< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02435" name = "l02435" > < / a > < span class = "lineno" > 2435< / span > }< / div >
< div class = "line" > < a id = "l02436" name = "l02436" > < / a > < span class = "lineno" > 2436< / span > variable_to_process_.push_back(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02437" name = "l02437" > < / a > < span class = "lineno" > 2437< / span > }< / div >
< div class = "line" > < a id = "l02438" name = "l02438" > < / a > < span class = "lineno" > 2438< / span > < span class = "keywordflow" > if< / span > (abort_early) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02439" name = "l02439" > < / a > < span class = "lineno" > 2439< / span > }< / div >
< div class = "line" > < a id = "l02440" name = "l02440" > < / a > < span class = "lineno" > 2440< / span > < / div >
< div class = "line" > < a id = "l02441" name = "l02441" > < / a > < span class = "lineno" > 2441< / span > < span class = "comment" > // All the variable left on the dfs_stack_ are independent.< / span > < / div >
< div class = "line" > < a id = "l02442" name = "l02442" > < / a > < span class = "lineno" > 2442< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > : dfs_stack_) {< / div >
< div class = "line" > < a id = "l02443" name = "l02443" > < / a > < span class = "lineno" > 2443< / span > is_independent_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02444" name = "l02444" > < / a > < span class = "lineno" > 2444< / span > }< / div >
< div class = "line" > < a id = "l02445" name = "l02445" > < / a > < span class = "lineno" > 2445< / span > < span class = "keywordflow" > return< / span > dfs_stack_.empty();< / div >
< div class = "line" > < a id = "l02446" name = "l02446" > < / a > < span class = "lineno" > 2446< / span > }< / div >
< div class = "line" > < a id = "l02447" name = "l02447" > < / a > < span class = "lineno" > 2447< / span > < / div >
< div class = "line" > < a id = "l02448" name = "l02448" > < / a > < span class = "lineno" > 2448< / span > < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a id = "l02449" name = "l02449" > < / a > < span class = "lineno" > 2449< / span > < / div >
< div class = "line" > < a id = "l02450" name = "l02450" > < / a > < span class = "lineno" > 2450< / span > < span class = "keyword" > struct < / span > WeightedVariable {< / div >
< div class = "line" > < a id = "l02451" name = "l02451" > < / a > < span class = "lineno" > 2451< / span > WeightedVariable(BooleanVariable v, < span class = "keywordtype" > int< / span > w) : < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > (v), < a class = "code hl_variable" href = "sat__solver_8cc.html#aa01147b1f07072d246c76dc85d69df7c" > weight< / a > (w) {}< / div >
< div class = "line" > < a id = "l02452" name = "l02452" > < / a > < span class = "lineno" > 2452< / span > < / div >
< div class = "line" > < a id = "l02453" name = "l02453" > < / a > < span class = "lineno" > < a class = "line" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > 2453< / a > < / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > ;< / div >
< div class = "line" > < a id = "l02454" name = "l02454" > < / a > < span class = "lineno" > < a class = "line" href = "sat__solver_8cc.html#aa01147b1f07072d246c76dc85d69df7c" > 2454< / a > < / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "sat__solver_8cc.html#aa01147b1f07072d246c76dc85d69df7c" > weight< / a > ;< / div >
< div class = "line" > < a id = "l02455" name = "l02455" > < / a > < span class = "lineno" > 2455< / span > };< / div >
< div class = "line" > < a id = "l02456" name = "l02456" > < / a > < span class = "lineno" > 2456< / span > < / div >
< div class = "line" > < a id = "l02457" name = "l02457" > < / a > < span class = "lineno" > 2457< / span > < span class = "comment" > // Lexical order, by larger weight, then by smaller variable number< / span > < / div >
< div class = "line" > < a id = "l02458" name = "l02458" > < / a > < span class = "lineno" > 2458< / span > < span class = "comment" > // to break ties< / span > < / div >
< div class = "line" > < a id = "l02459" name = "l02459" > < / a > < span class = "lineno" > 2459< / span > < span class = "keyword" > struct < / span > VariableWithLargerWeightFirst {< / div >
< div class = "line" > < a id = "l02460" name = "l02460" > < / a > < span class = "lineno" > 2460< / span > < span class = "keywordtype" > bool< / span > operator()(< span class = "keyword" > const< / span > WeightedVariable& wv1,< / div >
< div class = "line" > < a id = "l02461" name = "l02461" > < / a > < span class = "lineno" > 2461< / span > < span class = "keyword" > const< / span > WeightedVariable& wv2)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a id = "l02462" name = "l02462" > < / a > < span class = "lineno" > 2462< / span > < span class = "keywordflow" > return< / span > (wv1.weight > wv2.weight ||< / div >
< div class = "line" > < a id = "l02463" name = "l02463" > < / a > < span class = "lineno" > 2463< / span > (wv1.weight == wv2.weight & & wv1.var < wv2.var));< / div >
< div class = "line" > < a id = "l02464" name = "l02464" > < / a > < span class = "lineno" > 2464< / span > }< / div >
< div class = "line" > < a id = "l02465" name = "l02465" > < / a > < span class = "lineno" > 2465< / span > };< / div >
< div class = "line" > < a id = "l02466" name = "l02466" > < / a > < span class = "lineno" > 2466< / span > } < span class = "comment" > // namespace.< / span > < / div >
< div class = "line" > < a id = "l02467" name = "l02467" > < / a > < span class = "lineno" > 2467< / span > < / div >
< div class = "line" > < a id = "l02468" name = "l02468" > < / a > < span class = "lineno" > 2468< / span > < span class = "comment" > // This function allows a conflict variable to be replaced by another variable< / span > < / div >
< div class = "line" > < a id = "l02469" name = "l02469" > < / a > < span class = "lineno" > 2469< / span > < span class = "comment" > // not originally in the conflict. Greater reduction and backtracking can be< / span > < / div >
< div class = "line" > < a id = "l02470" name = "l02470" > < / a > < span class = "lineno" > 2470< / span > < span class = "comment" > // achieved this way, but the effect of this is not clear.< / span > < / div >
< div class = "line" > < a id = "l02471" name = "l02471" > < / a > < span class = "lineno" > 2471< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l02472" name = "l02472" > < / a > < span class = "lineno" > 2472< / span > < span class = "comment" > // TODO(user): More investigation needed. This seems to help on the Hanoi< / span > < / div >
< div class = "line" > < a id = "l02473" name = "l02473" > < / a > < span class = "lineno" > 2473< / span > < span class = "comment" > // problems, but degrades performance on others.< / span > < / div >
< div class = "line" > < a id = "l02474" name = "l02474" > < / a > < span class = "lineno" > 2474< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l02475" name = "l02475" > < / a > < span class = "lineno" > 2475< / span > < span class = "comment" > // TODO(user): Find a reference for this? neither minisat nor glucose do that,< / span > < / div >
< div class = "line" > < a id = "l02476" name = "l02476" > < / a > < span class = "lineno" > 2476< / span > < span class = "comment" > // they just do MinimizeConflictRecursively() with a different implementation.< / span > < / div >
< div class = "line" > < a id = "l02477" name = "l02477" > < / a > < span class = "lineno" > 2477< / span > < span class = "comment" > // Note that their behavior also make more sense with the way they (and we) bump< / span > < / div >
< div class = "line" > < a id = "l02478" name = "l02478" > < / a > < span class = "lineno" > 2478< / span > < span class = "comment" > // the variable activities.< / span > < / div >
< div class = "line" > < a id = "l02479" name = "l02479" > < / a > < span class = "lineno" > 2479< / span > < span class = "keywordtype" > void< / span > SatSolver::MinimizeConflictExperimental(std::vector< Literal> * conflict) {< / div >
< div class = "line" > < a id = "l02480" name = "l02480" > < / a > < span class = "lineno" > 2480< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l02481" name = "l02481" > < / a > < span class = "lineno" > 2481< / span > < / div >
< div class = "line" > < a id = "l02482" name = "l02482" > < / a > < span class = "lineno" > 2482< / span > < span class = "comment" > // First, sort the variables in the conflict by decreasing decision levels.< / span > < / div >
< div class = "line" > < a id = "l02483" name = "l02483" > < / a > < span class = "lineno" > 2483< / span > < span class = "comment" > // Also initialize is_marked_ to true for all conflict variables.< / span > < / div >
< div class = "line" > < a id = "l02484" name = "l02484" > < / a > < span class = "lineno" > 2484< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > ClearAndResize< / a > (num_variables_);< / div >
< div class = "line" > < a id = "l02485" name = "l02485" > < / a > < span class = "lineno" > 2485< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > current_level = < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > ();< / div >
< div class = "line" > < a id = "l02486" name = "l02486" > < / a > < span class = "lineno" > 2486< / span > std::vector< WeightedVariable> variables_sorted_by_level;< / div >
< div class = "line" > < a id = "l02487" name = "l02487" > < / a > < span class = "lineno" > 2487< / span > < span class = "keywordflow" > for< / span > (Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > : *conflict) {< / div >
< div class = "line" > < a id = "l02488" name = "l02488" > < / a > < span class = "lineno" > 2488< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable();< / div >
< div class = "line" > < a id = "l02489" name = "l02489" > < / a > < span class = "lineno" > 2489< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02490" name = "l02490" > < / a > < span class = "lineno" > 2490< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > level = DecisionLevel(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02491" name = "l02491" > < / a > < span class = "lineno" > 2491< / span > < span class = "keywordflow" > if< / span > (level < current_level) {< / div >
< div class = "line" > < a id = "l02492" name = "l02492" > < / a > < span class = "lineno" > 2492< / span > variables_sorted_by_level.push_back(WeightedVariable(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > , level));< / div >
< div class = "line" > < a id = "l02493" name = "l02493" > < / a > < span class = "lineno" > 2493< / span > }< / div >
< div class = "line" > < a id = "l02494" name = "l02494" > < / a > < span class = "lineno" > 2494< / span > }< / div >
< div class = "line" > < a id = "l02495" name = "l02495" > < / a > < span class = "lineno" > 2495< / span > std::sort(variables_sorted_by_level.begin(), variables_sorted_by_level.end(),< / div >
< div class = "line" > < a id = "l02496" name = "l02496" > < / a > < span class = "lineno" > 2496< / span > VariableWithLargerWeightFirst());< / div >
< div class = "line" > < a id = "l02497" name = "l02497" > < / a > < span class = "lineno" > 2497< / span > < / div >
< div class = "line" > < a id = "l02498" name = "l02498" > < / a > < span class = "lineno" > 2498< / span > < span class = "comment" > // Then process the reason of the variable with highest level first.< / span > < / div >
< div class = "line" > < a id = "l02499" name = "l02499" > < / a > < span class = "lineno" > 2499< / span > std::vector< BooleanVariable> to_remove;< / div >
< div class = "line" > < a id = "l02500" name = "l02500" > < / a > < span class = "lineno" > 2500< / span > < span class = "keywordflow" > for< / span > (WeightedVariable weighted_var : variables_sorted_by_level) {< / div >
< div class = "line" > < a id = "l02501" name = "l02501" > < / a > < span class = "lineno" > 2501< / span > < span class = "keyword" > const< / span > BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > = weighted_var.var;< / div >
< div class = "line" > < a id = "l02502" name = "l02502" > < / a > < span class = "lineno" > 2502< / span > < / div >
< div class = "line" > < a id = "l02503" name = "l02503" > < / a > < span class = "lineno" > 2503< / span > < span class = "comment" > // A nullptr reason means that this was a decision variable from the< / span > < / div >
< div class = "line" > < a id = "l02504" name = "l02504" > < / a > < span class = "lineno" > 2504< / span > < span class = "comment" > // previous levels.< / span > < / div >
< div class = "line" > < a id = "l02505" name = "l02505" > < / a > < span class = "lineno" > 2505< / span > < span class = "keyword" > const< / span > absl::Span< const Literal> reason = trail_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > Reason< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02506" name = "l02506" > < / a > < span class = "lineno" > 2506< / span > < span class = "keywordflow" > if< / span > (reason.empty()) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02507" name = "l02507" > < / a > < span class = "lineno" > 2507< / span > < / div >
< div class = "line" > < a id = "l02508" name = "l02508" > < / a > < span class = "lineno" > 2508< / span > < span class = "comment" > // Compute how many and which literals from the current reason do not appear< / span > < / div >
< div class = "line" > < a id = "l02509" name = "l02509" > < / a > < span class = "lineno" > 2509< / span > < span class = "comment" > // in the current conflict. Level 0 literals are ignored.< / span > < / div >
< div class = "line" > < a id = "l02510" name = "l02510" > < / a > < span class = "lineno" > 2510< / span > std::vector< Literal> not_contained_literals;< / div >
< div class = "line" > < a id = "l02511" name = "l02511" > < / a > < span class = "lineno" > 2511< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Literal reason_literal : reason) {< / div >
< div class = "line" > < a id = "l02512" name = "l02512" > < / a > < span class = "lineno" > 2512< / span > < span class = "keyword" > const< / span > BooleanVariable reason_var = reason_literal.Variable();< / div >
< div class = "line" > < a id = "l02513" name = "l02513" > < / a > < span class = "lineno" > 2513< / span > < / div >
< div class = "line" > < a id = "l02514" name = "l02514" > < / a > < span class = "lineno" > 2514< / span > < span class = "comment" > // We ignore level 0 variables.< / span > < / div >
< div class = "line" > < a id = "l02515" name = "l02515" > < / a > < span class = "lineno" > 2515< / span > < span class = "keywordflow" > if< / span > (DecisionLevel(reason_var) == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02516" name = "l02516" > < / a > < span class = "lineno" > 2516< / span > < / div >
< div class = "line" > < a id = "l02517" name = "l02517" > < / a > < span class = "lineno" > 2517< / span > < span class = "comment" > // We have a reason literal whose variable is not yet seen.< / span > < / div >
< div class = "line" > < a id = "l02518" name = "l02518" > < / a > < span class = "lineno" > 2518< / span > < span class = "comment" > // If there is more than one, break right away, we will not minimize the< / span > < / div >
< div class = "line" > < a id = "l02519" name = "l02519" > < / a > < span class = "lineno" > 2519< / span > < span class = "comment" > // current conflict with this variable.< / span > < / div >
< div class = "line" > < a id = "l02520" name = "l02520" > < / a > < span class = "lineno" > 2520< / span > < span class = "keywordflow" > if< / span > (!is_marked_[reason_var]) {< / div >
< div class = "line" > < a id = "l02521" name = "l02521" > < / a > < span class = "lineno" > 2521< / span > not_contained_literals.push_back(reason_literal);< / div >
< div class = "line" > < a id = "l02522" name = "l02522" > < / a > < span class = "lineno" > 2522< / span > < span class = "keywordflow" > if< / span > (not_contained_literals.size() > 1) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02523" name = "l02523" > < / a > < span class = "lineno" > 2523< / span > }< / div >
< div class = "line" > < a id = "l02524" name = "l02524" > < / a > < span class = "lineno" > 2524< / span > }< / div >
< div class = "line" > < a id = "l02525" name = "l02525" > < / a > < span class = "lineno" > 2525< / span > < span class = "keywordflow" > if< / span > (not_contained_literals.empty()) {< / div >
< div class = "line" > < a id = "l02526" name = "l02526" > < / a > < span class = "lineno" > 2526< / span > < span class = "comment" > // This variable will be deleted from the conflict. Note that we don' t< / span > < / div >
< div class = "line" > < a id = "l02527" name = "l02527" > < / a > < span class = "lineno" > 2527< / span > < span class = "comment" > // unmark it. This is because this variable can be infered from the other< / span > < / div >
< div class = "line" > < a id = "l02528" name = "l02528" > < / a > < span class = "lineno" > 2528< / span > < span class = "comment" > // variables in the conflict, so it is okay to skip it when processing the< / span > < / div >
< div class = "line" > < a id = "l02529" name = "l02529" > < / a > < span class = "lineno" > 2529< / span > < span class = "comment" > // reasons of other variables.< / span > < / div >
< div class = "line" > < a id = "l02530" name = "l02530" > < / a > < span class = "lineno" > 2530< / span > to_remove.push_back(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02531" name = "l02531" > < / a > < span class = "lineno" > 2531< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (not_contained_literals.size() == 1) {< / div >
< div class = "line" > < a id = "l02532" name = "l02532" > < / a > < span class = "lineno" > 2532< / span > < span class = "comment" > // Replace the literal from variable var with the only< / span > < / div >
< div class = "line" > < a id = "l02533" name = "l02533" > < / a > < span class = "lineno" > 2533< / span > < span class = "comment" > // not_contained_literals from the current reason.< / span > < / div >
< div class = "line" > < a id = "l02534" name = "l02534" > < / a > < span class = "lineno" > 2534< / span > to_remove.push_back(< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02535" name = "l02535" > < / a > < span class = "lineno" > 2535< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > Set< / a > (not_contained_literals.front().Variable());< / div >
< div class = "line" > < a id = "l02536" name = "l02536" > < / a > < span class = "lineno" > 2536< / span > conflict-> push_back(not_contained_literals.front());< / div >
< div class = "line" > < a id = "l02537" name = "l02537" > < / a > < span class = "lineno" > 2537< / span > }< / div >
< div class = "line" > < a id = "l02538" name = "l02538" > < / a > < span class = "lineno" > 2538< / span > }< / div >
< div class = "line" > < a id = "l02539" name = "l02539" > < / a > < span class = "lineno" > 2539< / span > < / div >
< div class = "line" > < a id = "l02540" name = "l02540" > < / a > < span class = "lineno" > 2540< / span > < span class = "comment" > // Unmark the variable that should be removed from the conflict.< / span > < / div >
< div class = "line" > < a id = "l02541" name = "l02541" > < / a > < span class = "lineno" > 2541< / span > < span class = "keywordflow" > for< / span > (BooleanVariable < a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > : to_remove) {< / div >
< div class = "line" > < a id = "l02542" name = "l02542" > < / a > < span class = "lineno" > 2542< / span > is_marked_.< a class = "code hl_function" href = "classoperations__research_1_1_sparse_bitset.html#ab465e925b8a535e5de8a072174ecafda" > Clear< / a > (< a class = "code hl_variable" href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > );< / div >
< div class = "line" > < a id = "l02543" name = "l02543" > < / a > < span class = "lineno" > 2543< / span > }< / div >
< div class = "line" > < a id = "l02544" name = "l02544" > < / a > < span class = "lineno" > 2544< / span > < / div >
< div class = "line" > < a id = "l02545" name = "l02545" > < / a > < span class = "lineno" > 2545< / span > < span class = "comment" > // Remove the now unmarked literals from the conflict.< / span > < / div >
< div class = "line" > < a id = "l02546" name = "l02546" > < / a > < span class = "lineno" > 2546< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = 0;< / div >
< div class = "line" > < a id = "l02547" name = "l02547" > < / a > < span class = "lineno" > 2547< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < conflict-> size(); ++i) {< / div >
< div class = "line" > < a id = "l02548" name = "l02548" > < / a > < span class = "lineno" > 2548< / span > < span class = "keyword" > const< / span > Literal < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > = (*conflict)[i];< / div >
< div class = "line" > < a id = "l02549" name = "l02549" > < / a > < span class = "lineno" > 2549< / span > < span class = "keywordflow" > if< / span > (is_marked_[< a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > .Variable()]) {< / div >
< div class = "line" > < a id = "l02550" name = "l02550" > < / a > < span class = "lineno" > 2550< / span > (*conflict)[< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ] = < a class = "code hl_variable" href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > ;< / div >
< div class = "line" > < a id = "l02551" name = "l02551" > < / a > < span class = "lineno" > 2551< / span > ++< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ;< / div >
< div class = "line" > < a id = "l02552" name = "l02552" > < / a > < span class = "lineno" > 2552< / span > }< / div >
< div class = "line" > < a id = "l02553" name = "l02553" > < / a > < span class = "lineno" > 2553< / span > }< / div >
< div class = "line" > < a id = "l02554" name = "l02554" > < / a > < span class = "lineno" > 2554< / span > conflict-> erase(conflict-> begin() + < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > , conflict-> end());< / div >
< div class = "line" > < a id = "l02555" name = "l02555" > < / a > < span class = "lineno" > 2555< / span > }< / div >
< div class = "line" > < a id = "l02556" name = "l02556" > < / a > < span class = "lineno" > 2556< / span > < / div >
< div class = "line" > < a id = "l02557" name = "l02557" > < / a > < span class = "lineno" > 2557< / span > < span class = "keywordtype" > void< / span > SatSolver::CleanClauseDatabaseIfNeeded() {< / div >
< div class = "line" > < a id = "l02558" name = "l02558" > < / a > < span class = "lineno" > 2558< / span > < span class = "keywordflow" > if< / span > (num_learned_clause_before_cleanup_ > 0) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l02559" name = "l02559" > < / a > < span class = "lineno" > 2559< / span > < a class = "code hl_define" href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > (& stats_);< / div >
< div class = "line" > < a id = "l02560" name = "l02560" > < / a > < span class = "lineno" > 2560< / span > < / div >
< div class = "line" > < a id = "l02561" name = "l02561" > < / a > < span class = "lineno" > 2561< / span > < span class = "comment" > // Creates a list of clauses that can be deleted. Note that only the clauses< / span > < / div >
< div class = "line" > < a id = "l02562" name = "l02562" > < / a > < span class = "lineno" > 2562< / span > < span class = "comment" > // that appear in clauses_info can potentially be removed.< / span > < / div >
< div class = "line" > < a id = "l02563" name = "l02563" > < / a > < span class = "lineno" > 2563< / span > < span class = "keyword" > typedef< / span > std::pair< SatClause*, ClauseInfo> Entry;< / div >
< div class = "line" > < a id = "l02564" name = "l02564" > < / a > < span class = "lineno" > 2564< / span > std::vector< Entry> entries;< / div >
< div class = "line" > < a id = "l02565" name = "l02565" > < / a > < span class = "lineno" > 2565< / span > < span class = "keyword" > auto< / span > & clauses_info = *(clauses_propagator_-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > mutable_clauses_info< / a > ());< / div >
< div class = "line" > < a id = "l02566" name = "l02566" > < / a > < span class = "lineno" > 2566< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > & entry : clauses_info) {< / div >
< div class = "line" > < a id = "l02567" name = "l02567" > < / a > < span class = "lineno" > 2567< / span > < span class = "keywordflow" > if< / span > (ClauseIsUsedAsReason(entry.first)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02568" name = "l02568" > < / a > < span class = "lineno" > 2568< / span > < span class = "keywordflow" > if< / span > (entry.second.protected_during_next_cleanup) {< / div >
< div class = "line" > < a id = "l02569" name = "l02569" > < / a > < span class = "lineno" > 2569< / span > entry.second.protected_during_next_cleanup = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l02570" name = "l02570" > < / a > < span class = "lineno" > 2570< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02571" name = "l02571" > < / a > < span class = "lineno" > 2571< / span > }< / div >
< div class = "line" > < a id = "l02572" name = "l02572" > < / a > < span class = "lineno" > 2572< / span > entries.push_back(entry);< / div >
< div class = "line" > < a id = "l02573" name = "l02573" > < / a > < span class = "lineno" > 2573< / span > }< / div >
< div class = "line" > < a id = "l02574" name = "l02574" > < / a > < span class = "lineno" > 2574< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > num_protected_clauses = clauses_info.size() - entries.size();< / div >
< div class = "line" > < a id = "l02575" name = "l02575" > < / a > < span class = "lineno" > 2575< / span > < / div >
< div class = "line" > < a id = "l02576" name = "l02576" > < / a > < span class = "lineno" > 2576< / span > < span class = "keywordflow" > if< / span > (parameters_-> clause_cleanup_ordering() == SatParameters::CLAUSE_LBD) {< / div >
< div class = "line" > < a id = "l02577" name = "l02577" > < / a > < span class = "lineno" > 2577< / span > < span class = "comment" > // Order the clauses by decreasing LBD and then increasing activity.< / span > < / div >
< div class = "line" > < a id = "l02578" name = "l02578" > < / a > < span class = "lineno" > 2578< / span > std::sort(entries.begin(), entries.end(),< / div >
< div class = "line" > < a id = "l02579" name = "l02579" > < / a > < span class = "lineno" > 2579< / span > [](< span class = "keyword" > const< / span > Entry& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < span class = "keyword" > const< / span > Entry& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ) {< / div >
< div class = "line" > < a id = "l02580" name = "l02580" > < / a > < span class = "lineno" > 2580< / span > if (a.second.lbd == b.second.lbd) {< / div >
< div class = "line" > < a id = "l02581" name = "l02581" > < / a > < span class = "lineno" > 2581< / span > return a.second.activity < b.second.activity;< / div >
< div class = "line" > < a id = "l02582" name = "l02582" > < / a > < span class = "lineno" > 2582< / span > }< / div >
< div class = "line" > < a id = "l02583" name = "l02583" > < / a > < span class = "lineno" > 2583< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .second.lbd > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > .second.lbd;< / div >
< div class = "line" > < a id = "l02584" name = "l02584" > < / a > < span class = "lineno" > 2584< / span > });< / div >
< div class = "line" > < a id = "l02585" name = "l02585" > < / a > < span class = "lineno" > 2585< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l02586" name = "l02586" > < / a > < span class = "lineno" > 2586< / span > < span class = "comment" > // Order the clauses by increasing activity and then decreasing LBD.< / span > < / div >
< div class = "line" > < a id = "l02587" name = "l02587" > < / a > < span class = "lineno" > 2587< / span > std::sort(entries.begin(), entries.end(),< / div >
< div class = "line" > < a id = "l02588" name = "l02588" > < / a > < span class = "lineno" > 2588< / span > [](< span class = "keyword" > const< / span > Entry& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < span class = "keyword" > const< / span > Entry& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ) {< / div >
< div class = "line" > < a id = "l02589" name = "l02589" > < / a > < span class = "lineno" > 2589< / span > if (a.second.activity == b.second.activity) {< / div >
< div class = "line" > < a id = "l02590" name = "l02590" > < / a > < span class = "lineno" > 2590< / span > return a.second.lbd > b.second.lbd;< / div >
< div class = "line" > < a id = "l02591" name = "l02591" > < / a > < span class = "lineno" > 2591< / span > }< / div >
< div class = "line" > < a id = "l02592" name = "l02592" > < / a > < span class = "lineno" > 2592< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .second.activity < < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > .second.activity;< / div >
< div class = "line" > < a id = "l02593" name = "l02593" > < / a > < span class = "lineno" > 2593< / span > });< / div >
< div class = "line" > < a id = "l02594" name = "l02594" > < / a > < span class = "lineno" > 2594< / span > }< / div >
< div class = "line" > < a id = "l02595" name = "l02595" > < / a > < span class = "lineno" > 2595< / span > < / div >
< div class = "line" > < a id = "l02596" name = "l02596" > < / a > < span class = "lineno" > 2596< / span > < span class = "comment" > // The clause we want to keep are at the end of the vector.< / span > < / div >
< div class = "line" > < a id = "l02597" name = "l02597" > < / a > < span class = "lineno" > 2597< / span > < span class = "keywordtype" > int< / span > num_kept_clauses =< / div >
< div class = "line" > < a id = "l02598" name = "l02598" > < / a > < span class = "lineno" > 2598< / span > (parameters_-> clause_cleanup_target() > 0)< / div >
< div class = "line" > < a id = "l02599" name = "l02599" > < / a > < span class = "lineno" > 2599< / span > ? < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (< span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > int< / span > < span class = "keyword" > > < / span > (entries.size()),< / div >
< div class = "line" > < a id = "l02600" name = "l02600" > < / a > < span class = "lineno" > 2600< / span > parameters_-> clause_cleanup_target())< / div >
< div class = "line" > < a id = "l02601" name = "l02601" > < / a > < span class = "lineno" > 2601< / span > : < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > int< / span > < span class = "keyword" > > < / span > (parameters_-> clause_cleanup_ratio() *< / div >
< div class = "line" > < a id = "l02602" name = "l02602" > < / a > < span class = "lineno" > 2602< / span > < span class = "keyword" > static_cast< < / span > < span class = "keywordtype" > double< / span > < span class = "keyword" > > < / span > (entries.size()));< / div >
< div class = "line" > < a id = "l02603" name = "l02603" > < / a > < span class = "lineno" > 2603< / span > < / div >
< div class = "line" > < a id = "l02604" name = "l02604" > < / a > < span class = "lineno" > 2604< / span > < span class = "keywordtype" > int< / span > num_deleted_clauses = entries.size() - num_kept_clauses;< / div >
< div class = "line" > < a id = "l02605" name = "l02605" > < / a > < span class = "lineno" > 2605< / span > < / div >
< div class = "line" > < a id = "l02606" name = "l02606" > < / a > < span class = "lineno" > 2606< / span > < span class = "comment" > // Tricky: Because the order of the clauses_info iteration is NOT< / span > < / div >
< div class = "line" > < a id = "l02607" name = "l02607" > < / a > < span class = "lineno" > 2607< / span > < span class = "comment" > // deterministic (pointer keys), we also keep all the clauses which have the< / span > < / div >
< div class = "line" > < a id = "l02608" name = "l02608" > < / a > < span class = "lineno" > 2608< / span > < span class = "comment" > // same LBD and activity as the last one so the behavior is deterministic.< / span > < / div >
< div class = "line" > < a id = "l02609" name = "l02609" > < / a > < span class = "lineno" > 2609< / span > < span class = "keywordflow" > while< / span > (num_deleted_clauses > 0) {< / div >
< div class = "line" > < a id = "l02610" name = "l02610" > < / a > < span class = "lineno" > 2610< / span > < span class = "keyword" > const< / span > ClauseInfo& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > = entries[num_deleted_clauses].second;< / div >
< div class = "line" > < a id = "l02611" name = "l02611" > < / a > < span class = "lineno" > 2611< / span > < span class = "keyword" > const< / span > ClauseInfo& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > = entries[num_deleted_clauses - 1].second;< / div >
< div class = "line" > < a id = "l02612" name = "l02612" > < / a > < span class = "lineno" > 2612< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .activity != < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > .activity || < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .lbd != < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > .lbd) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02613" name = "l02613" > < / a > < span class = "lineno" > 2613< / span > --num_deleted_clauses;< / div >
< div class = "line" > < a id = "l02614" name = "l02614" > < / a > < span class = "lineno" > 2614< / span > ++num_kept_clauses;< / div >
< div class = "line" > < a id = "l02615" name = "l02615" > < / a > < span class = "lineno" > 2615< / span > }< / div >
< div class = "line" > < a id = "l02616" name = "l02616" > < / a > < span class = "lineno" > 2616< / span > < span class = "keywordflow" > if< / span > (num_deleted_clauses > 0) {< / div >
< div class = "line" > < a id = "l02617" name = "l02617" > < / a > < span class = "lineno" > 2617< / span > entries.resize(num_deleted_clauses);< / div >
< div class = "line" > < a id = "l02618" name = "l02618" > < / a > < span class = "lineno" > 2618< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Entry& entry : entries) {< / div >
< div class = "line" > < a id = "l02619" name = "l02619" > < / a > < span class = "lineno" > 2619< / span > SatClause* clause = entry.first;< / div >
< div class = "line" > < a id = "l02620" name = "l02620" > < / a > < span class = "lineno" > 2620< / span > counters_.num_literals_forgotten += clause-> size();< / div >
< div class = "line" > < a id = "l02621" name = "l02621" > < / a > < span class = "lineno" > 2621< / span > clauses_propagator_-> LazyDetach(clause);< / div >
< div class = "line" > < a id = "l02622" name = "l02622" > < / a > < span class = "lineno" > 2622< / span > }< / div >
< div class = "line" > < a id = "l02623" name = "l02623" > < / a > < span class = "lineno" > 2623< / span > clauses_propagator_-> CleanUpWatchers();< / div >
< div class = "line" > < a id = "l02624" name = "l02624" > < / a > < span class = "lineno" > 2624< / span > < / div >
< div class = "line" > < a id = "l02625" name = "l02625" > < / a > < span class = "lineno" > 2625< / span > < span class = "comment" > // TODO(user): If the need arise, we could avoid this linear scan on the< / span > < / div >
< div class = "line" > < a id = "l02626" name = "l02626" > < / a > < span class = "lineno" > 2626< / span > < span class = "comment" > // full list of clauses by not keeping the clauses from clauses_info there.< / span > < / div >
< div class = "line" > < a id = "l02627" name = "l02627" > < / a > < span class = "lineno" > 2627< / span > < span class = "keywordflow" > if< / span > (!block_clause_deletion_) {< / div >
< div class = "line" > < a id = "l02628" name = "l02628" > < / a > < span class = "lineno" > 2628< / span > clauses_propagator_-> DeleteRemovedClauses();< / div >
< div class = "line" > < a id = "l02629" name = "l02629" > < / a > < span class = "lineno" > 2629< / span > }< / div >
< div class = "line" > < a id = "l02630" name = "l02630" > < / a > < span class = "lineno" > 2630< / span > }< / div >
< div class = "line" > < a id = "l02631" name = "l02631" > < / a > < span class = "lineno" > 2631< / span > < / div >
< div class = "line" > < a id = "l02632" name = "l02632" > < / a > < span class = "lineno" > 2632< / span > num_learned_clause_before_cleanup_ = parameters_-> clause_cleanup_period();< / div >
< div class = "line" > < a id = "l02633" name = "l02633" > < / a > < span class = "lineno" > 2633< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < < span class = "stringliteral" > " Database cleanup, #protected:" < / span > < < num_protected_clauses< / div >
< div class = "line" > < a id = "l02634" name = "l02634" > < / a > < span class = "lineno" > 2634< / span > < < < span class = "stringliteral" > " #kept:" < / span > < < num_kept_clauses< / div >
< div class = "line" > < a id = "l02635" name = "l02635" > < / a > < span class = "lineno" > 2635< / span > < < < span class = "stringliteral" > " #deleted:" < / span > < < num_deleted_clauses;< / div >
< div class = "line" > < a id = "l02636" name = "l02636" > < / a > < span class = "lineno" > 2636< / span > }< / div >
< div class = "line" > < a id = "l02637" name = "l02637" > < / a > < span class = "lineno" > 2637< / span > < / div >
< div class = "line" > < a id = "l02638" name = "l02638" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a762ee6abbb57f9f730df6033aafdf4fc" > 2638< / a > < / span > std::string < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a762ee6abbb57f9f730df6033aafdf4fc" > SatStatusString< / a > (< a class = "code hl_enumeration" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > SatSolver::Status< / a > < a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > ) {< / div >
< div class = "line" > < a id = "l02639" name = "l02639" > < / a > < span class = "lineno" > 2639< / span > < span class = "keywordflow" > switch< / span > (< a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > ) {< / div >
< div class = "line" > < a id = "l02640" name = "l02640" > < / a > < span class = "lineno" > 2640< / span > < span class = "keywordflow" > case< / span > SatSolver::ASSUMPTIONS_UNSAT:< / div >
< div class = "line" > < a id = "l02641" name = "l02641" > < / a > < span class = "lineno" > 2641< / span > < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " ASSUMPTIONS_UNSAT" < / span > ;< / div >
< div class = "line" > < a id = "l02642" name = "l02642" > < / a > < span class = "lineno" > 2642< / span > < span class = "keywordflow" > case< / span > SatSolver::INFEASIBLE:< / div >
< div class = "line" > < a id = "l02643" name = "l02643" > < / a > < span class = "lineno" > 2643< / span > < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " INFEASIBLE" < / span > ;< / div >
< div class = "line" > < a id = "l02644" name = "l02644" > < / a > < span class = "lineno" > 2644< / span > < span class = "keywordflow" > case< / span > SatSolver::FEASIBLE:< / div >
< div class = "line" > < a id = "l02645" name = "l02645" > < / a > < span class = "lineno" > 2645< / span > < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " FEASIBLE" < / span > ;< / div >
< div class = "line" > < a id = "l02646" name = "l02646" > < / a > < span class = "lineno" > 2646< / span > < span class = "keywordflow" > case< / span > SatSolver::LIMIT_REACHED:< / div >
< div class = "line" > < a id = "l02647" name = "l02647" > < / a > < span class = "lineno" > 2647< / span > < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " LIMIT_REACHED" < / span > ;< / div >
< div class = "line" > < a id = "l02648" name = "l02648" > < / a > < span class = "lineno" > 2648< / span > }< / div >
< div class = "line" > < a id = "l02649" name = "l02649" > < / a > < span class = "lineno" > 2649< / span > < span class = "comment" > // Fallback. We don' t use " default:" so the compiler will return an error< / span > < / div >
< div class = "line" > < a id = "l02650" name = "l02650" > < / a > < span class = "lineno" > 2650< / span > < span class = "comment" > // if we forgot one enum case above.< / span > < / div >
< div class = "line" > < a id = "l02651" name = "l02651" > < / a > < span class = "lineno" > 2651< / span > < a class = "code hl_define" href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > (DFATAL) < < < span class = "stringliteral" > " Invalid SatSolver::Status " < / span > < < < a class = "code hl_variable" href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > ;< / div >
< div class = "line" > < a id = "l02652" name = "l02652" > < / a > < span class = "lineno" > 2652< / span > < span class = "keywordflow" > return< / span > < span class = "stringliteral" > " UNKNOWN" < / span > ;< / div >
< div class = "line" > < a id = "l02653" name = "l02653" > < / a > < span class = "lineno" > 2653< / span > }< / div >
< div class = "line" > < a id = "l02654" name = "l02654" > < / a > < span class = "lineno" > 2654< / span > < / div >
< div class = "line" > < a id = "l02655" name = "l02655" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a6fb8349259fa849de0789a4ec58a8492" > 2655< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a6fb8349259fa849de0789a4ec58a8492" > MinimizeCore< / a > (< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_sat_solver.html" > SatSolver< / a > * solver, std::vector< Literal> * core) {< / div >
< div class = "line" > < a id = "l02656" name = "l02656" > < / a > < span class = "lineno" > 2656< / span > std::vector< Literal> result;< / div >
< div class = "line" > < a id = "l02657" name = "l02657" > < / a > < span class = "lineno" > 2657< / span > < / div >
< div class = "line" > < a id = "l02658" name = "l02658" > < / a > < span class = "lineno" > 2658< / span > solver-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9da38c8d2910442d551db5e360423029" > ResetToLevelZero< / a > ();< / div >
< div class = "line" > < a id = "l02659" name = "l02659" > < / a > < span class = "lineno" > 2659< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > lit : *core) {< / div >
< div class = "line" > < a id = "l02660" name = "l02660" > < / a > < span class = "lineno" > 2660< / span > < span class = "keywordflow" > if< / span > (solver-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > LiteralIsTrue< / a > (lit)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02661" name = "l02661" > < / a > < span class = "lineno" > 2661< / span > result.push_back(lit);< / div >
< div class = "line" > < a id = "l02662" name = "l02662" > < / a > < span class = "lineno" > 2662< / span > < span class = "keywordflow" > if< / span > (solver-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > Assignment< / a > ().< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5" > LiteralIsFalse< / a > (lit)) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02663" name = "l02663" > < / a > < span class = "lineno" > 2663< / span > < span class = "keywordflow" > if< / span > (!solver-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_sat_solver.html#a093c00c2bd81c8ec7a5f86a4466fa7d5" > EnqueueDecisionIfNotConflicting< / a > (lit)) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l02664" name = "l02664" > < / a > < span class = "lineno" > 2664< / span > }< / div >
< div class = "line" > < a id = "l02665" name = "l02665" > < / a > < span class = "lineno" > 2665< / span > < span class = "keywordflow" > if< / span > (result.size() < core-> size()) {< / div >
< div class = "line" > < a id = "l02666" name = "l02666" > < / a > < span class = "lineno" > 2666< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < < span class = "stringliteral" > " minimization " < / span > < < core-> size() < < < span class = "stringliteral" > " -> " < / span > < < result.size();< / div >
< div class = "line" > < a id = "l02667" name = "l02667" > < / a > < span class = "lineno" > 2667< / span > *core = result;< / div >
< div class = "line" > < a id = "l02668" name = "l02668" > < / a > < span class = "lineno" > 2668< / span > }< / div >
< div class = "line" > < a id = "l02669" name = "l02669" > < / a > < span class = "lineno" > 2669< / span > }< / div >
< div class = "line" > < a id = "l02670" name = "l02670" > < / a > < span class = "lineno" > 2670< / span > < / div >
< div class = "line" > < a id = "l02671" name = "l02671" > < / a > < span class = "lineno" > 2671< / span > } < span class = "comment" > // namespace sat< / span > < / div >
< div class = "line" > < a id = "l02672" name = "l02672" > < / a > < span class = "lineno" > 2672< / span > } < span class = "comment" > // namespace operations_research< / span > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aalldiff__cst_8cc_html_a26e6db9bcc64b584051ecc28171ed11f" > < div class = "ttname" > < a href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > max< / a > < / div > < div class = "ttdeci" > int64_t max< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "alldiff__cst_8cc_source.html#l00140" > alldiff_cst.cc:140< / a > < / div > < / div >
< div class = "ttc" id = "aalldiff__cst_8cc_html_ad10edae0a852d72fb76afb1c77735045" > < div class = "ttname" > < a href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > min< / a > < / div > < div class = "ttdeci" > int64_t min< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "alldiff__cst_8cc_source.html#l00139" > alldiff_cst.cc:139< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html" > < div class = "ttname" > < a href = "base_2logging_8h.html" > logging.h< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a3e1cfef60e774a81f30eaddf26a3a274" > < div class = "ttname" > < a href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > < / div > < div class = "ttdeci" > #define CHECK(condition)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00495" > base/logging.h:495< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "abase_2logging_8h_html_a4395e95bab44e222cb2e77251017a0e2" > < div class = "ttname" > < a href = "base_2logging_8h.html#a4395e95bab44e222cb2e77251017a0e2" > DCHECK_LE< / a > < / div > < div class = "ttdeci" > #define DCHECK_LE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00893" > base/logging.h:893< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a46e69120fbd3b36e6960e096d23b66f0" > < div class = "ttname" > < a href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > < / div > < div class = "ttdeci" > #define DCHECK_NE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00892" > base/logging.h:892< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a4bd2e815ca2f702a4b6aa744b1ff3b82" > < div class = "ttname" > < a href = "base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82" > CHECK_LT< / a > < / div > < div class = "ttdeci" > #define CHECK_LT(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00706" > base/logging.h:706< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a7c0ce053b28d53aa4eaf3eb7fb71663b" > < div class = "ttname" > < a href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > < / div > < div class = "ttdeci" > #define CHECK_EQ(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00703" > base/logging.h:703< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a7cc25402ecd7591b4c39934dd656b1f9" > < div class = "ttname" > < a href = "base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9" > CHECK_GE< / a > < / div > < div class = "ttdeci" > #define CHECK_GE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00707" > base/logging.h:707< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_a7e03ec13560fa94a8fea569960d7efc6" > < div class = "ttname" > < a href = "base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6" > CHECK_GT< / a > < / div > < div class = "ttdeci" > #define CHECK_GT(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00708" > base/logging.h:708< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_aae2dc65d9ea248d54bf39daa986dd295" > < div class = "ttname" > < a href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > < / div > < div class = "ttdeci" > #define DCHECK_GE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00895" > base/logging.h:895< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ab4f56aa24c4c9cddc47a6abd2d747f9a" > < div class = "ttname" > < a href = "base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a" > DCHECK_GT< / a > < / div > < div class = "ttdeci" > #define DCHECK_GT(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00896" > base/logging.h:896< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ab62f5ed8f2d48e29802be0cbbcd1359a" > < div class = "ttname" > < a href = "base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a" > DCHECK_LT< / a > < / div > < div class = "ttdeci" > #define DCHECK_LT(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00894" > base/logging.h:894< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "abase_2logging_8h_html_accad43a85d781d53381cd53a9894b6ae" > < div class = "ttname" > < a href = "base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae" > LOG< / a > < / div > < div class = "ttdeci" > #define LOG(severity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00420" > base/logging.h:420< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "abase_2logging_8h_html_ae17f8119c108cf3070bad3449c7e0006" > < div class = "ttname" > < a href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > < / div > < div class = "ttdeci" > #define DCHECK(condition)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00890" > base/logging.h:890< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ae4db23f10f5d4aad6d735f5a74cd6f8c" > < div class = "ttname" > < a href = "base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c" > CHECK_LE< / a > < / div > < div class = "ttdeci" > #define CHECK_LE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00705" > base/logging.h:705< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_ae89df3243bbb8341130c7b3f44145ea0" > < div class = "ttname" > < a href = "base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0" > DCHECK_EQ< / a > < / div > < div class = "ttdeci" > #define DCHECK_EQ(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00891" > base/logging.h:891< / a > < / div > < / div >
< div class = "ttc" id = "abase_2logging_8h_html_afcaa7cadd41741bb855c2ada1d2ef927" > < div class = "ttname" > < a href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > < / div > < div class = "ttdeci" > #define VLOG(verboselevel)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00984" > base/logging.h:984< / a > < / div > < / div >
< div class = "ttc" id = "abitset_8h_html" > < div class = "ttname" > < a href = "bitset_8h.html" > bitset.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aclass_wall_timer_html_a6bdbb9a2345c126ae0d72b1e2a9a21d5" > < div class = "ttname" > < a href = "class_wall_timer.html#a6bdbb9a2345c126ae0d72b1e2a9a21d5" > WallTimer::Restart< / a > < / div > < div class = "ttdeci" > void Restart()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "timer_8h_source.html#l00035" > timer.h:35< / a > < / div > < / div >
< div class = "ttc" id = "aclass_wall_timer_html_aec56fe080959ecebec3feaed9dafde84" > < div class = "ttname" > < a href = "class_wall_timer.html#aec56fe080959ecebec3feaed9dafde84" > WallTimer::Get< / a > < / div > < div class = "ttdeci" > double Get() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "timer_8h_source.html#l00045" > timer.h:45< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_solver_logger_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_solver_logger.html" > operations_research::SolverLogger< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "util_2logging_8h_source.html#l00033" > util/logging.h:33< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_solver_logger_html_a035277f8488770078b1171cae4636b8e" > < div class = "ttname" > < a href = "classoperations__research_1_1_solver_logger.html#a035277f8488770078b1171cae4636b8e" > operations_research::SolverLogger::SetLogToStdOut< / a > < / div > < div class = "ttdeci" > void SetLogToStdOut(bool enable)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "util_2logging_8h_source.html#l00045" > util/logging.h:45< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_solver_logger_html_a9492cb97f5ec0ecbce0b5ef1b085738b" > < div class = "ttname" > < a href = "classoperations__research_1_1_solver_logger.html#a9492cb97f5ec0ecbce0b5ef1b085738b" > operations_research::SolverLogger::LoggingIsEnabled< / a > < / div > < div class = "ttdeci" > bool LoggingIsEnabled() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "util_2logging_8h_source.html#l00042" > util/logging.h:42< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_solver_logger_html_ad4238e7273d93a1d0a2272d46660c254" > < div class = "ttname" > < a href = "classoperations__research_1_1_solver_logger.html#ad4238e7273d93a1d0a2272d46660c254" > operations_research::SolverLogger::EnableLogging< / a > < / div > < div class = "ttdeci" > void EnableLogging(bool enable)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "util_2logging_8h_source.html#l00039" > util/logging.h:39< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_sparse_bitset_html_a41f798a04019147982b29c576ff9d8b7" > < div class = "ttname" > < a href = "classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7" > operations_research::SparseBitset::Set< / a > < / div > < div class = "ttdeci" > void Set(IntegerType index)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "bitset_8h_source.html#l00809" > bitset.h:809< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_sparse_bitset_html_a7187b794b93178bdf96f632d1f5d8c03" > < div class = "ttname" > < a href = "classoperations__research_1_1_sparse_bitset.html#a7187b794b93178bdf96f632d1f5d8c03" > operations_research::SparseBitset::PositionsSetAtLeastOnce< / a > < / div > < div class = "ttdeci" > const std::vector< IntegerType > & PositionsSetAtLeastOnce() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "bitset_8h_source.html#l00819" > bitset.h:819< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_sparse_bitset_html_a838e4744903ec12e6ebcf2999f4a90df" > < div class = "ttname" > < a href = "classoperations__research_1_1_sparse_bitset.html#a838e4744903ec12e6ebcf2999f4a90df" > operations_research::SparseBitset::NumberOfSetCallsWithDifferentArguments< / a > < / div > < div class = "ttdeci" > int NumberOfSetCallsWithDifferentArguments() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "bitset_8h_source.html#l00816" > bitset.h:816< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_sparse_bitset_html_ab465e925b8a535e5de8a072174ecafda" > < div class = "ttname" > < a href = "classoperations__research_1_1_sparse_bitset.html#ab465e925b8a535e5de8a072174ecafda" > operations_research::SparseBitset::Clear< / a > < / div > < div class = "ttdeci" > void Clear(IntegerType index)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "bitset_8h_source.html#l00815" > bitset.h:815< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_sparse_bitset_html_ae09e38958e558d2c776bc555a0dc2fc7" > < div class = "ttname" > < a href = "classoperations__research_1_1_sparse_bitset.html#ae09e38958e558d2c776bc555a0dc2fc7" > operations_research::SparseBitset::ClearAndResize< / a > < / div > < div class = "ttdeci" > void ClearAndResize(IntegerType size)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "bitset_8h_source.html#l00784" > bitset.h:784< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_stats_group_html_af9bc435481ae9e6e60d66a65d5394a7f" > < div class = "ttname" > < a href = "classoperations__research_1_1_stats_group.html#af9bc435481ae9e6e60d66a65d5394a7f" > operations_research::StatsGroup::StatString< / a > < / div > < div class = "ttdeci" > std::string StatString() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8cc_source.html#l00071" > stats.cc:71< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_time_limit_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_time_limit.html" > operations_research::TimeLimit< / a > < / div > < div class = "ttdoc" > A simple class to enforce both an elapsed time limit and a deterministic time limit in the same threa...< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "time__limit_8h_source.html#l00106" > time_limit.h:106< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1_time_limit_html_a312550ebabce586fb77c49e813c610f8" > < div class = "ttname" > < a href = "classoperations__research_1_1_time_limit.html#a312550ebabce586fb77c49e813c610f8" > operations_research::TimeLimit::ResetLimitFromParameters< / a > < / div > < div class = "ttdeci" > void ResetLimitFromParameters(const Parameters & parameters)< / div > < div class = "ttdoc" > Sets new time limits.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "time__limit_8h_source.html#l00519" > time_limit.h:519< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_time_limit_html_a810d5f7aaf80cc09cf5a094e20c1aaca" > < div class = "ttname" > < a href = "classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca" > operations_research::TimeLimit::LimitReached< / a > < / div > < div class = "ttdeci" > bool LimitReached()< / div > < div class = "ttdoc" > Returns true when the external limit is true, or the deterministic time is over the deterministic lim...< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "time__limit_8h_source.html#l00546" > time_limit.h:546< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_clause_manager_html_a4690b2e5ad68f70322cca80950f5bf7d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_clause_manager.html#a4690b2e5ad68f70322cca80950f5bf7d" > operations_research::sat::BinaryClauseManager::Add< / a > < / div > < div class = "ttdeci" > bool Add(BinaryClause c)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00392" > clause.h:392< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_clause_manager_html_a47e143bc6df345d913315f79e0c3d290" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_clause_manager.html#a47e143bc6df345d913315f79e0c3d290" > operations_research::sat::BinaryClauseManager::ClearNewlyAdded< / a > < / div > < div class = "ttdeci" > void ClearNewlyAdded()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00405" > clause.h:405< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_clause_manager_html_a5b8bd742e2d44b9c3dbd7abd9f2546e9" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_clause_manager.html#a5b8bd742e2d44b9c3dbd7abd9f2546e9" > operations_research::sat::BinaryClauseManager::newly_added< / a > < / div > < div class = "ttdeci" > const std::vector< BinaryClause > & newly_added() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00404" > clause.h:404< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html" > operations_research::sat::BinaryImplicationGraph< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00457" > clause.h:457< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a1f591be5334541874ba049873235f0a9" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a1f591be5334541874ba049873235f0a9" > operations_research::sat::BinaryImplicationGraph::Propagate< / a > < / div > < div class = "ttdeci" > bool Propagate(Trail *trail) final< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00780" > clause.cc:780< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a26fc07b3630b79be6914e6387b63a073" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a26fc07b3630b79be6914e6387b63a073" > operations_research::sat::BinaryImplicationGraph::AddBinaryClause< / a > < / div > < div class = "ttdeci" > void AddBinaryClause(Literal a, Literal b)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00509" > clause.cc:509< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a311c7dc55d8a10542d54dfeabca48450" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a311c7dc55d8a10542d54dfeabca48450" > operations_research::sat::BinaryImplicationGraph::MinimizeConflictWithReachability< / a > < / div > < div class = "ttdeci" > void MinimizeConflictWithReachability(std::vector< Literal > *c)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00804" > clause.cc:804< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a4a2107f2a0daf6968b6c0dded5964497" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a4a2107f2a0daf6968b6c0dded5964497" > operations_research::sat::BinaryImplicationGraph::AddBinaryClauseDuringSearch< / a > < / div > < div class = "ttdeci" > bool AddBinaryClauseDuringSearch(Literal a, Literal b)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00526" > clause.cc:526< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a6cbb84e00be8d376ad8bf7d0e333a46a" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a6cbb84e00be8d376ad8bf7d0e333a46a" > operations_research::sat::BinaryImplicationGraph::MinimizeConflictFirstWithTransitiveReduction< / a > < / div > < div class = "ttdeci" > void MinimizeConflictFirstWithTransitiveReduction(const Trail & trail, std::vector< Literal > *c, SparseBitset< BooleanVariable > *marked, absl::BitGenRef random)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00899" > clause.cc:899< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a869f65709fd34e4f4ed967bab630f707" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a869f65709fd34e4f4ed967bab630f707" > operations_research::sat::BinaryImplicationGraph::num_inspections< / a > < / div > < div class = "ttdeci" > int64_t num_inspections() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00612" > clause.h:612< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a8b070b41da109f3928f19f48d043958d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a8b070b41da109f3928f19f48d043958d" > operations_research::sat::BinaryImplicationGraph::num_redundant_implications< / a > < / div > < div class = "ttdeci" > int64_t num_redundant_implications() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00631" > clause.h:631< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_a95cb5284ae22d2cbca6cd69a275d8a98" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#a95cb5284ae22d2cbca6cd69a275d8a98" > operations_research::sat::BinaryImplicationGraph::MinimizeConflictFirst< / a > < / div > < div class = "ttdeci" > void MinimizeConflictFirst(const Trail & trail, std::vector< Literal > *c, SparseBitset< BooleanVariable > *marked)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00881" > clause.cc:881< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ab65ae480cf60d2f92e32e6420ba55cdb" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ab65ae480cf60d2f92e32e6420ba55cdb" > operations_research::sat::BinaryImplicationGraph::num_literals_removed< / a > < / div > < div class = "ttdeci" > int64_t num_literals_removed() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00616" > clause.h:616< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_abaadd9bf3136af09f2d2ae695439c4fa" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#abaadd9bf3136af09f2d2ae695439c4fa" > operations_research::sat::BinaryImplicationGraph::num_propagations< / a > < / div > < div class = "ttdeci" > int64_t num_propagations() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00609" > clause.h:609< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_abcad56047cef75a12528fe99794a6e1e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#abcad56047cef75a12528fe99794a6e1e" > operations_research::sat::BinaryImplicationGraph::RemoveFixedVariables< / a > < / div > < div class = "ttdeci" > void RemoveFixedVariables()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l01012" > clause.cc:1012< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ac43fb21cb946317348b377dbdd1589f2" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ac43fb21cb946317348b377dbdd1589f2" > operations_research::sat::BinaryImplicationGraph::num_minimization< / a > < / div > < div class = "ttdeci" > int64_t num_minimization() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00615" > clause.h:615< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ac8d9ce1fd42b34561f508c578f61e4ef" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ac8d9ce1fd42b34561f508c578f61e4ef" > operations_research::sat::BinaryImplicationGraph::IsEmpty< / a > < / div > < div class = "ttdeci" > bool IsEmpty() const final< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00484" > clause.h:484< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_ae9a2f518d6edd64467abcef2c70934ff" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#ae9a2f518d6edd64467abcef2c70934ff" > operations_research::sat::BinaryImplicationGraph::num_implications< / a > < / div > < div class = "ttdeci" > int64_t num_implications() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00639" > clause.h:639< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_aec717d6bc59b3b48bb21276a081c62c1" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#aec717d6bc59b3b48bb21276a081c62c1" > operations_research::sat::BinaryImplicationGraph::AddAtMostOne< / a > < / div > < div class = "ttdeci" > ABSL_MUST_USE_RESULT bool AddAtMostOne(absl::Span< const Literal > at_most_one)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00553" > clause.cc:553< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_af30fd0373e896f83bb84d2295a310492" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#af30fd0373e896f83bb84d2295a310492" > operations_research::sat::BinaryImplicationGraph::MinimizeConflictExperimental< / a > < / div > < div class = "ttdeci" > void MinimizeConflictExperimental(const Trail & trail, std::vector< Literal > *c)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00961" > clause.cc:961< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_binary_implication_graph_html_af7fbbd00f0e631ce361b5ce6636b2017" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_binary_implication_graph.html#af7fbbd00f0e631ce361b5ce6636b2017" > operations_research::sat::BinaryImplicationGraph::Resize< / a > < / div > < div class = "ttdeci" > void Resize(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00495" > clause.cc:495< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_drat_proof_handler_html_a18349231154d0f5eaee94fe213f347e6" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a18349231154d0f5eaee94fe213f347e6" > operations_research::sat::DratProofHandler::DeleteClause< / a > < / div > < div class = "ttdeci" > void DeleteClause(absl::Span< const Literal > clause)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "drat__proof__handler_8cc_source.html#l00093" > drat_proof_handler.cc:93< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_drat_proof_handler_html_a98bacf41c50979896b4a5f5e41fb0ccf" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_drat_proof_handler.html#a98bacf41c50979896b4a5f5e41fb0ccf" > operations_research::sat::DratProofHandler::AddClause< / a > < / div > < div class = "ttdeci" > void AddClause(absl::Span< const Literal > clause)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "drat__proof__handler_8cc_source.html#l00083" > drat_proof_handler.cc:83< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal.html" > operations_research::sat::Literal< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00067" > sat_base.h:67< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_html_a6a5dcff82096cd7a7147bf996dbaa5a8" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal.html#a6a5dcff82096cd7a7147bf996dbaa5a8" > operations_research::sat::Literal::Variable< / a > < / div > < div class = "ttdeci" > BooleanVariable Variable() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00083" > sat_base.h:83< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_html_a886e9c024f7209181c0a850b6e90c644" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal.html#a886e9c024f7209181c0a850b6e90c644" > operations_research::sat::Literal::Negated< / a > < / div > < div class = "ttdeci" > Literal Negated() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00094" > sat_base.h:94< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html" > operations_research::sat::LiteralWatchers< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00163" > clause.h:163< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_a32aff14f95e1bfa0ac66cbff8e2f6cb7" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a32aff14f95e1bfa0ac66cbff8e2f6cb7" > operations_research::sat::LiteralWatchers::NextClauseToMinimize< / a > < / div > < div class = "ttdeci" > SatClause * NextClauseToMinimize()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00249" > clause.h:249< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_a5dd3bd6d733d8f5647f15e225f8e91c4" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a5dd3bd6d733d8f5647f15e225f8e91c4" > operations_research::sat::LiteralWatchers::mutable_clauses_info< / a > < / div > < div class = "ttdeci" > absl::flat_hash_map< SatClause *, ClauseInfo > * mutable_clauses_info()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00226" > clause.h:226< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_a6af58ea401f90fe1a40be4558dba478a" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a6af58ea401f90fe1a40be4558dba478a" > operations_research::sat::LiteralWatchers::AddRemovableClause< / a > < / div > < div class = "ttdeci" > SatClause * AddRemovableClause(const std::vector< Literal > & literals, Trail *trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00230" > clause.cc:230< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_a70c5a070f03810d5467c5758f6bb916e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a70c5a070f03810d5467c5758f6bb916e" > operations_research::sat::LiteralWatchers::num_inspected_clauses< / a > < / div > < div class = "ttdeci" > int64_t num_inspected_clauses() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00231" > clause.h:231< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_a9e43736bb5ad76519001b5beeb0eac6d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#a9e43736bb5ad76519001b5beeb0eac6d" > operations_research::sat::LiteralWatchers::num_clauses< / a > < / div > < div class = "ttdeci" > int64_t num_clauses() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00213" > clause.h:213< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_aaec5e05be5e5e385c6222c023587cb05" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#aaec5e05be5e5e385c6222c023587cb05" > operations_research::sat::LiteralWatchers::AddClause< / a > < / div > < div class = "ttdeci" > bool AddClause(absl::Span< const Literal > literals, Trail *trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00223" > clause.cc:223< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_aaf9f3bc83c843a94dd2240e2a81a5e3b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#aaf9f3bc83c843a94dd2240e2a81a5e3b" > operations_research::sat::LiteralWatchers::ReasonClause< / a > < / div > < div class = "ttdeci" > SatClause * ReasonClause(int trail_index) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00215" > clause.cc:215< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ab054db78fc1b1e1681d2fc4e9fd1ca45" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab054db78fc1b1e1681d2fc4e9fd1ca45" > operations_research::sat::LiteralWatchers::IsRemovable< / a > < / div > < div class = "ttdeci" > bool IsRemovable(SatClause *const clause) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00222" > clause.h:222< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ab17b31190c5ab58a1334139848335283" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab17b31190c5ab58a1334139848335283" > operations_research::sat::LiteralWatchers::InprocessingRewriteClause< / a > < / div > < div class = "ttdeci" > ABSL_MUST_USE_RESULT bool InprocessingRewriteClause(SatClause *clause, absl::Span< const Literal > new_clause)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00385" > clause.cc:385< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ab6174cc15ef4df301b31aff43216039e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab6174cc15ef4df301b31aff43216039e" > operations_research::sat::LiteralWatchers::num_watched_clauses< / a > < / div > < div class = "ttdeci" > int64_t num_watched_clauses() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00240" > clause.h:240< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ab6bd51395bef8b42ac66ad9b52635084" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab6bd51395bef8b42ac66ad9b52635084" > operations_research::sat::LiteralWatchers::LazyDetach< / a > < / div > < div class = "ttdeci" > void LazyDetach(SatClause *clause)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00312" > clause.cc:312< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ab80681ada3f207791a16617205935937" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ab80681ada3f207791a16617205935937" > operations_research::sat::LiteralWatchers::num_removable_clauses< / a > < / div > < div class = "ttdeci" > int64_t num_removable_clauses() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00225" > clause.h:225< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_abe425f3287da97e7ffaa8c9dfb3dcefe" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#abe425f3287da97e7ffaa8c9dfb3dcefe" > operations_research::sat::LiteralWatchers::AllClausesInCreationOrder< / a > < / div > < div class = "ttdeci" > const std::vector< SatClause * > & AllClausesInCreationOrder() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00214" > clause.h:214< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ad78bb381916ac421212217a3e5cb03ab" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ad78bb381916ac421212217a3e5cb03ab" > operations_research::sat::LiteralWatchers::num_inspected_clause_literals< / a > < / div > < div class = "ttdeci" > int64_t num_inspected_clause_literals() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00232" > clause.h:232< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ada4c57ad822069c6c61a93973dc39c4d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ada4c57ad822069c6c61a93973dc39c4d" > operations_research::sat::LiteralWatchers::ResetToMinimizeIndex< / a > < / div > < div class = "ttdeci" > void ResetToMinimizeIndex()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00260" > clause.h:260< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ae234022ee7c496416290d1946f56e1ad" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ae234022ee7c496416290d1946f56e1ad" > operations_research::sat::LiteralWatchers::DeleteRemovedClauses< / a > < / div > < div class = "ttdeci" > void DeleteRemovedClauses()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00472" > clause.cc:472< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_ae57f3c4e72eb63a34fa09e707a18e6d3" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#ae57f3c4e72eb63a34fa09e707a18e6d3" > operations_research::sat::LiteralWatchers::CleanUpWatchers< / a > < / div > < div class = "ttdeci" > void CleanUpWatchers()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00459" > clause.cc:459< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_af3769ff2cdf469ae4a13cc4f6b15bc14" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#af3769ff2cdf469ae4a13cc4f6b15bc14" > operations_research::sat::LiteralWatchers::Detach< / a > < / div > < div class = "ttdeci" > void Detach(SatClause *clause)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00319" > clause.cc:319< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_literal_watchers_html_af7fbbd00f0e631ce361b5ce6636b2017" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal_watchers.html#af7fbbd00f0e631ce361b5ce6636b2017" > operations_research::sat::LiteralWatchers::Resize< / a > < / div > < div class = "ttdeci" > void Resize(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8cc_source.html#l00087" > clause.cc:87< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_model_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_model.html" > operations_research::sat::Model< / a > < / div > < div class = "ttdoc" > Class that owns everything related to a particular optimization model.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2model_8h_source.html#l00042" > sat/model.h:42< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_model_html_a7fac5de5604ea8668bc414536e8aa7ee" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_model.html#a7fac5de5604ea8668bc414536e8aa7ee" > operations_research::sat::Model::Register< / a > < / div > < div class = "ttdeci" > void Register(T *non_owned_class)< / div > < div class = "ttdoc" > Register a non-owned class that will be " singleton" in the model.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2model_8h_source.html#l00173" > sat/model.h:173< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_model_html_afb0c03e2a6201677c266f8a7eb77c2dc" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_model.html#afb0c03e2a6201677c266f8a7eb77c2dc" > operations_research::sat::Model::GetOrCreate< / a > < / div > < div class = "ttdeci" > T * GetOrCreate()< / div > < div class = "ttdoc" > Returns an object of type T that is unique to this model (like a " local" singleton).< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2model_8h_source.html#l00110" > sat/model.h:110< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint_html_a3061094c37b507ae2834cb7d86fbcf39" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#a3061094c37b507ae2834cb7d86fbcf39" > operations_research::sat::MutableUpperBoundedLinearConstraint::ComputeSlackForTrailPrefix< / a > < / div > < div class = "ttdeci" > Coefficient ComputeSlackForTrailPrefix(const Trail & trail, int trail_index) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00302" > pb_constraint.cc:302< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint_html_a4556e82417879ecf2bf14a4ee7bfce9e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#a4556e82417879ecf2bf14a4ee7bfce9e" > operations_research::sat::MutableUpperBoundedLinearConstraint::Rhs< / a > < / div > < div class = "ttdeci" > Coefficient Rhs() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00277" > pb_constraint.h:277< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint_html_aaff50cb53673c51920c6bcb567ca8806" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#aaff50cb53673c51920c6bcb567ca8806" > operations_research::sat::MutableUpperBoundedLinearConstraint::AddTerm< / a > < / div > < div class = "ttdeci" > void AddTerm(Literal literal, Coefficient coeff)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00282" > pb_constraint.h:282< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint_html_ac4fb16d0641ccef0502adb8bbe3909af" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#ac4fb16d0641ccef0502adb8bbe3909af" > operations_research::sat::MutableUpperBoundedLinearConstraint::AddToRhs< / a > < / div > < div class = "ttdeci" > void AddToRhs(Coefficient value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00273" > pb_constraint.h:273< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint_html_ac85244c6eaf57970b2057657ae70ee17" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#ac85244c6eaf57970b2057657ae70ee17" > operations_research::sat::MutableUpperBoundedLinearConstraint::ClearAndResize< / a > < / div > < div class = "ttdeci" > void ClearAndResize(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00251" > pb_constraint.cc:251< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint_html_ad49fd13bba7789f08d81d6c71d856082" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_mutable_upper_bounded_linear_constraint.html#ad49fd13bba7789f08d81d6c71d856082" > operations_research::sat::MutableUpperBoundedLinearConstraint::CopyIntoVector< / a > < / div > < div class = "ttdeci" > void CopyIntoVector(std::vector< LiteralWithCoeff > *output)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00382" > pb_constraint.cc:382< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html" > operations_research::sat::PbConstraints< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00524" > pb_constraint.h:524< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_a18ab319435ed80315e0c35ca40a7c2a0" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a18ab319435ed80315e0c35ca40a7c2a0" > operations_research::sat::PbConstraints::NumberOfConstraints< / a > < / div > < div class = "ttdeci" > int NumberOfConstraints() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00581" > pb_constraint.h:581< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_a5116e268e9144cf6ee197450e0eda486" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a5116e268e9144cf6ee197450e0eda486" > operations_research::sat::PbConstraints::ClearConflictingConstraint< / a > < / div > < div class = "ttdeci" > void ClearConflictingConstraint()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00589" > pb_constraint.h:589< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_a5a1f1fc70e04b4d91167a415a45a13ad" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a5a1f1fc70e04b4d91167a415a45a13ad" > operations_research::sat::PbConstraints::num_inspected_constraint_literals< / a > < / div > < div class = "ttdeci" > int64_t num_inspected_constraint_literals() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00613" > pb_constraint.h:613< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_a668f93c96cd8a83dd4bf3da35ba8b7b0" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a668f93c96cd8a83dd4bf3da35ba8b7b0" > operations_research::sat::PbConstraints::AddConstraint< / a > < / div > < div class = "ttdeci" > bool AddConstraint(const std::vector< LiteralWithCoeff > & cst, Coefficient rhs, Trail *trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00835" > pb_constraint.cc:835< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_a677c33525fa9ddfc38520d99448e3950" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a677c33525fa9ddfc38520d99448e3950" > operations_research::sat::PbConstraints::ConflictingConstraint< / a > < / div > < div class = "ttdeci" > UpperBoundedLinearConstraint * ConflictingConstraint()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00590" > pb_constraint.h:590< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_a944e51f934257c76ec47b94dd37f5468" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#a944e51f934257c76ec47b94dd37f5468" > operations_research::sat::PbConstraints::num_threshold_updates< / a > < / div > < div class = "ttdeci" > int64_t num_threshold_updates() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00616" > pb_constraint.h:616< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_ab00d5c5d5edf37a9568363ba39e02c11" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#ab00d5c5d5edf37a9568363ba39e02c11" > operations_research::sat::PbConstraints::ReasonPbConstraint< / a > < / div > < div class = "ttdeci" > UpperBoundedLinearConstraint * ReasonPbConstraint(int trail_index) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00988" > pb_constraint.cc:988< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_ad064f7982ad8af720e437b82380b629f" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#ad064f7982ad8af720e437b82380b629f" > operations_research::sat::PbConstraints::UpdateActivityIncrement< / a > < / div > < div class = "ttdeci" > void UpdateActivityIncrement()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l01095" > pb_constraint.cc:1095< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_ae087fb0f8731e64e65fb00e517fe8966" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#ae087fb0f8731e64e65fb00e517fe8966" > operations_research::sat::PbConstraints::BumpActivity< / a > < / div > < div class = "ttdeci" > void BumpActivity(UpperBoundedLinearConstraint *constraint)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l01078" > pb_constraint.cc:1078< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_af33b8aea130f426edbc51d960b1b60c5" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#af33b8aea130f426edbc51d960b1b60c5" > operations_research::sat::PbConstraints::num_constraint_lookups< / a > < / div > < div class = "ttdeci" > int64_t num_constraint_lookups() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00612" > pb_constraint.h:612< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_af7fbbd00f0e631ce361b5ce6636b2017" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#af7fbbd00f0e631ce361b5ce6636b2017" > operations_research::sat::PbConstraints::Resize< / a > < / div > < div class = "ttdeci" > void Resize(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00552" > pb_constraint.h:552< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_pb_constraints_html_afea0121eba5886052ba91716acf7f29f" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_pb_constraints.html#afea0121eba5886052ba91716acf7f29f" > operations_research::sat::PbConstraints::AddLearnedConstraint< / a > < / div > < div class = "ttdeci" > bool AddLearnedConstraint(const std::vector< LiteralWithCoeff > & cst, Coefficient rhs, Trail *trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00896" > pb_constraint.cc:896< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_restart_policy_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_restart_policy.html" > operations_research::sat::RestartPolicy< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "restart_8h_source.html#l00031" > restart.h:31< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_restart_policy_html_a372de693ad40b3f42839c8ec6ac845f4" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_restart_policy.html#a372de693ad40b3f42839c8ec6ac845f4" > operations_research::sat::RestartPolicy::Reset< / a > < / div > < div class = "ttdeci" > void Reset()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "restart_8cc_source.html#l00030" > restart.cc:30< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_restart_policy_html_a3b30aa3a72ace837ddc29fd371c6e46e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_restart_policy.html#a3b30aa3a72ace837ddc29fd371c6e46e" > operations_research::sat::RestartPolicy::InfoString< / a > < / div > < div class = "ttdeci" > std::string InfoString() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "restart_8cc_source.html#l00180" > restart.cc:180< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_restart_policy_html_a6656a848070cf8e91a9af92feee0477c" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_restart_policy.html#a6656a848070cf8e91a9af92feee0477c" > operations_research::sat::RestartPolicy::OnConflict< / a > < / div > < div class = "ttdeci" > void OnConflict(int conflict_trail_index, int conflict_decision_level, int conflict_lbd)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "restart_8cc_source.html#l00151" > restart.cc:151< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_restart_policy_html_a9a4dbc2c6849f437d4f08288eeffbfed" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_restart_policy.html#a9a4dbc2c6849f437d4f08288eeffbfed" > operations_research::sat::RestartPolicy::ShouldRestart< / a > < / div > < div class = "ttdeci" > bool ShouldRestart()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "restart_8cc_source.html#l00088" > restart.cc:88< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_restart_policy_html_aea2ab8041aa76772ba75a3ca8c2cfd81" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_restart_policy.html#aea2ab8041aa76772ba75a3ca8c2cfd81" > operations_research::sat::RestartPolicy::NumRestarts< / a > < / div > < div class = "ttdeci" > int NumRestarts() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "restart_8h_source.html#l00054" > restart.h:54< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_clause_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_clause.html" > operations_research::sat::SatClause< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00054" > clause.h:54< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html" > operations_research::sat::SatDecisionPolicy< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8h_source.html#l00036" > sat_decision.h:36< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_a19614231a107b165113595bf8edf60bf" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#a19614231a107b165113595bf8edf60bf" > operations_research::sat::SatDecisionPolicy::IncreaseNumVariables< / a > < / div > < div class = "ttdeci" > void IncreaseNumVariables(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8cc_source.html#l00041" > sat_decision.cc:41< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_a8bc0829ef9f6099106cab480e71ab847" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#a8bc0829ef9f6099106cab480e71ab847" > operations_research::sat::SatDecisionPolicy::UpdateVariableActivityIncrement< / a > < / div > < div class = "ttdeci" > void UpdateVariableActivityIncrement()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8cc_source.html#l00347" > sat_decision.cc:347< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_aa62b9215667a0b7dc6af8251dbaba486" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#aa62b9215667a0b7dc6af8251dbaba486" > operations_research::sat::SatDecisionPolicy::Untrail< / a > < / div > < div class = "ttdeci" > void Untrail(int target_trail_index)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8cc_source.html#l00410" > sat_decision.cc:410< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_aab615de1a3b2016b0a8b8cdf05e9cf0b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#aab615de1a3b2016b0a8b8cdf05e9cf0b" > operations_research::sat::SatDecisionPolicy::BumpVariableActivities< / a > < / div > < div class = "ttdeci" > void BumpVariableActivities(const std::vector< Literal > & literals)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8cc_source.html#l00302" > sat_decision.cc:302< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_abe906f3b347e87b5e91e7ab5609b0f36" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#abe906f3b347e87b5e91e7ab5609b0f36" > operations_research::sat::SatDecisionPolicy::BeforeConflict< / a > < / div > < div class = "ttdeci" > void BeforeConflict(int trail_index)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8cc_source.html#l00070" > sat_decision.cc:70< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_acf014a334d9412c245c083ce69aa8716" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#acf014a334d9412c245c083ce69aa8716" > operations_research::sat::SatDecisionPolicy::NextBranch< / a > < / div > < div class = "ttdeci" > Literal NextBranch()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8cc_source.html#l00351" > sat_decision.cc:351< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_decision_policy_html_acf5ac4ce7b95b26c0eadcd6b8cbffe74" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_decision_policy.html#acf5ac4ce7b95b26c0eadcd6b8cbffe74" > operations_research::sat::SatDecisionPolicy::UpdateWeightedSign< / a > < / div > < div class = "ttdeci" > void UpdateWeightedSign(const std::vector< LiteralWithCoeff > & terms, Coefficient rhs)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__decision_8cc_source.html#l00292" > sat_decision.cc:292< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_propagator_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_propagator.html" > operations_research::sat::SatPropagator< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00448" > sat_base.h:448< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_propagator_html_a5298758773353d79435345e19a7b3a38" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_propagator.html#a5298758773353d79435345e19a7b3a38" > operations_research::sat::SatPropagator::PropagatorId< / a > < / div > < div class = "ttdeci" > int PropagatorId() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00456" > sat_base.h:456< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html" > operations_research::sat::SatSolver< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00061" > sat_solver.h:61< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a05c49a95f6af6f8d873c96cae6ab6653" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a05c49a95f6af6f8d873c96cae6ab6653" > operations_research::sat::SatSolver::AddLinearConstraint< / a > < / div > < div class = "ttdeci" > bool AddLinearConstraint(bool use_lower_bound, Coefficient lower_bound, bool use_upper_bound, Coefficient upper_bound, std::vector< LiteralWithCoeff > *cst)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00343" > sat_solver.cc:343< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a093c00c2bd81c8ec7a5f86a4466fa7d5" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a093c00c2bd81c8ec7a5f86a4466fa7d5" > operations_research::sat::SatSolver::EnqueueDecisionIfNotConflicting< / a > < / div > < div class = "ttdeci" > bool EnqueueDecisionIfNotConflicting(Literal true_literal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00976" > sat_solver.cc:976< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a0b58ef3a397720b272662f8bc45585cb" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a0b58ef3a397720b272662f8bc45585cb" > operations_research::sat::SatSolver::SetNumVariables< / a > < / div > < div class = "ttdeci" > void SetNumVariables(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00085" > sat_solver.cc:85< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a0e8b0117614d340615ab66abec430d78" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a0e8b0117614d340615ab66abec430d78" > operations_research::sat::SatSolver::AddTernaryClause< / a > < / div > < div class = "ttdeci" > bool AddTernaryClause(Literal a, Literal b, Literal c)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00193" > sat_solver.cc:193< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a17c09186d8dd4922296e97185f685c97" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a17c09186d8dd4922296e97185f685c97" > operations_research::sat::SatSolver::AddLastPropagator< / a > < / div > < div class = "ttdeci" > void AddLastPropagator(SatPropagator *propagator)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00445" > sat_solver.cc:445< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a1a5e26554d014197de9434d2c39e07e9" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9" > operations_research::sat::SatSolver::parameters< / a > < / div > < div class = "ttdeci" > const SatParameters & parameters() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00131" > sat_solver.cc:131< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a25eb4ef5875f4884226251b66eb61bc0" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a25eb4ef5875f4884226251b66eb61bc0" > operations_research::sat::SatSolver::AddClauseDuringSearch< / a > < / div > < div class = "ttdeci" > bool AddClauseDuringSearch(absl::Span< const Literal > literals)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00157" > sat_solver.cc:157< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a27e14216f4d9330375fc0089a1919f20" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a27e14216f4d9330375fc0089a1919f20" > operations_research::sat::SatSolver::SolveWithTimeLimit< / a > < / div > < div class = "ttdeci" > Status SolveWithTimeLimit(TimeLimit *time_limit)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01072" > sat_solver.cc:1072< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a2aafb0d6bd7d95f183e87866d0ade374" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2aafb0d6bd7d95f183e87866d0ade374" > operations_research::sat::SatSolver::ProcessNewlyFixedVariables< / a > < / div > < div class = "ttdeci" > void ProcessNewlyFixedVariables()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01659" > sat_solver.cc:1659< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a2abca6db0c780a4482d1ac9eb6365057" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2abca6db0c780a4482d1ac9eb6365057" > operations_research::sat::SatSolver::ResetAndSolveWithGivenAssumptions< / a > < / div > < div class = "ttdeci" > Status ResetAndSolveWithGivenAssumptions(const std::vector< Literal > & assumptions)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01047" > sat_solver.cc:1047< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a2b006481369eb4f4cb7f3037dfdd8404" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2b006481369eb4f4cb7f3037dfdd8404" > operations_research::sat::SatSolver::Solve< / a > < / div > < div class = "ttdeci" > Status Solve()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01076" > sat_solver.cc:1076< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a2d1cea64152ca53ac5df160b48059800" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a2d1cea64152ca53ac5df160b48059800" > operations_research::sat::SatSolver::AddPropagator< / a > < / div > < div class = "ttdeci" > void AddPropagator(SatPropagator *propagator)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00437" > sat_solver.cc:437< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a4793952607a98dfddfbcc17abfabbb4b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4793952607a98dfddfbcc17abfabbb4b" > operations_research::sat::SatSolver::Assignment< / a > < / div > < div class = "ttdeci" > const VariablesAssignment & Assignment() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00378" > sat_solver.h:378< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a4e9c1f685afe26db1566eaa65724b40b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a4e9c1f685afe26db1566eaa65724b40b" > operations_research::sat::SatSolver::NewlyAddedBinaryClauses< / a > < / div > < div class = "ttdeci" > const std::vector< BinaryClause > & NewlyAddedBinaryClauses()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01032" > sat_solver.cc:1032< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a5a9a59c0a2f7fcec81cc44b1aa159186" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5a9a59c0a2f7fcec81cc44b1aa159186" > operations_research::sat::SatSolver::AddBinaryClauses< / a > < / div > < div class = "ttdeci" > bool AddBinaryClauses(const std::vector< BinaryClause > & clauses)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01022" > sat_solver.cc:1022< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a5b06f24fb581de78b321dfd793931439" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5b06f24fb581de78b321dfd793931439" > operations_research::sat::SatSolver::LiteralTrail< / a > < / div > < div class = "ttdeci" > const Trail & LiteralTrail() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00377" > sat_solver.h:377< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a5bbe13ebae8aa11a8a4ac1cb01bc66ad" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5bbe13ebae8aa11a8a4ac1cb01bc66ad" > operations_research::sat::SatSolver::UnsatStatus< / a > < / div > < div class = "ttdeci" > Status UnsatStatus() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00325" > sat_solver.h:325< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a5ca47674a4a0b5e7f40eb430ab474440" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a5ca47674a4a0b5e7f40eb430ab474440" > operations_research::sat::SatSolver::SetAssumptionLevel< / a > < / div > < div class = "ttdeci" > void SetAssumptionLevel(int assumption_level)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01060" > sat_solver.cc:1060< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a607d97ccada862073f297bc2d495124d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a607d97ccada862073f297bc2d495124d" > operations_research::sat::SatSolver::FinishPropagation< / a > < / div > < div class = "ttdeci" > bool FinishPropagation()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00561" > sat_solver.cc:561< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b" > operations_research::sat::SatSolver::Status< / a > < / div > < div class = "ttdeci" > Status< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00183" > sat_solver.h:183< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1" > operations_research::sat::SatSolver::FEASIBLE< / a > < / div > < div class = "ttdeci" > @ FEASIBLE< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00186" > sat_solver.h:186< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483" > operations_research::sat::SatSolver::INFEASIBLE< / a > < / div > < div class = "ttdeci" > @ INFEASIBLE< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00185" > sat_solver.h:185< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed" > operations_research::sat::SatSolver::LIMIT_REACHED< / a > < / div > < div class = "ttdeci" > @ LIMIT_REACHED< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00187" > sat_solver.h:187< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885" > operations_research::sat::SatSolver::ASSUMPTIONS_UNSAT< / a > < / div > < div class = "ttdeci" > @ ASSUMPTIONS_UNSAT< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00184" > sat_solver.h:184< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a68050818df324a24e6309055e857b955" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a68050818df324a24e6309055e857b955" > operations_research::sat::SatSolver::SaveDebugAssignment< / a > < / div > < div class = "ttdeci" > void SaveDebugAssignment()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00474" > sat_solver.cc:474< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a705eddd5baee23097daf34b73e66eae3" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a705eddd5baee23097daf34b73e66eae3" > operations_research::sat::SatSolver::AdvanceDeterministicTime< / a > < / div > < div class = "ttdeci" > void AdvanceDeterministicTime(TimeLimit *limit)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00444" > sat_solver.h:444< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a7ab8996f31104834f27a232817731314" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a7ab8996f31104834f27a232817731314" > operations_research::sat::SatSolver::num_restarts< / a > < / div > < div class = "ttdeci" > int64_t num_restarts() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00111" > sat_solver.cc:111< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a8c6812e05685c0b43d4dd8efaf68aa23" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8c6812e05685c0b43d4dd8efaf68aa23" > operations_research::sat::SatSolver::~SatSolver< / a > < / div > < div class = "ttdeci" > ~SatSolver()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00083" > sat_solver.cc:83< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a8f1f9030283b2fa93b2353ab260ebe1e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8f1f9030283b2fa93b2353ab260ebe1e" > operations_research::sat::SatSolver::MinimizeSomeClauses< / a > < / div > < div class = "ttdeci" > void MinimizeSomeClauses(int decisions_budget)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01350" > sat_solver.cc:1350< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a8fa29503728270c9696389c9e590c242" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a8fa29503728270c9696389c9e590c242" > operations_research::sat::SatSolver::num_branches< / a > < / div > < div class = "ttdeci" > int64_t num_branches() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00103" > sat_solver.cc:103< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a9ae69b015a43c1a94e8815ab0dd8189c" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9ae69b015a43c1a94e8815ab0dd8189c" > operations_research::sat::SatSolver::EnqueueDecisionAndBackjumpOnConflict< / a > < / div > < div class = "ttdeci" > int EnqueueDecisionAndBackjumpOnConflict(Literal true_literal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00536" > sat_solver.cc:536< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a9d584b84d7b882a6017b072b33475172" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9d584b84d7b882a6017b072b33475172" > operations_research::sat::SatSolver::SetParameters< / a > < / div > < div class = "ttdeci" > void SetParameters(const SatParameters & parameters)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00136" > sat_solver.cc:136< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_a9da38c8d2910442d551db5e360423029" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#a9da38c8d2910442d551db5e360423029" > operations_research::sat::SatSolver::ResetToLevelZero< / a > < / div > < div class = "ttdeci" > bool ResetToLevelZero()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00579" > sat_solver.cc:579< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_aac912e9410b8989493f492fcbb2d9094" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#aac912e9410b8989493f492fcbb2d9094" > operations_research::sat::SatSolver::AddBinaryClause< / a > < / div > < div class = "ttdeci" > bool AddBinaryClause(Literal a, Literal b)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00189" > sat_solver.cc:189< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_ab63a08713131e63e9cc4109f98ecf859" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#ab63a08713131e63e9cc4109f98ecf859" > operations_research::sat::SatSolver::EnqueueDecisionAndBacktrackOnConflict< / a > < / div > < div class = "ttdeci" > int EnqueueDecisionAndBacktrackOnConflict(Literal true_literal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00963" > sat_solver.cc:963< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_abaadd9bf3136af09f2d2ae695439c4fa" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#abaadd9bf3136af09f2d2ae695439c4fa" > operations_research::sat::SatSolver::num_propagations< / a > < / div > < div class = "ttdeci" > int64_t num_propagations() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00107" > sat_solver.cc:107< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_ac035378cea0ed7b0978105547402faa8" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8" > operations_research::sat::SatSolver::Backtrack< / a > < / div > < div class = "ttdeci" > void Backtrack(int target_level)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00991" > sat_solver.cc:991< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_ac714aeb75f0f6dd87e52e5d1a0d6edc7" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#ac714aeb75f0f6dd87e52e5d1a0d6edc7" > operations_research::sat::SatSolver::RestoreSolverToAssumptionLevel< / a > < / div > < div class = "ttdeci" > bool RestoreSolverToAssumptionLevel()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00551" > sat_solver.cc:551< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_acace892b69b55e3ee219e2893f34ef8f" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#acace892b69b55e3ee219e2893f34ef8f" > operations_research::sat::SatSolver::num_failures< / a > < / div > < div class = "ttdeci" > int64_t num_failures() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00105" > sat_solver.cc:105< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_acfbfa9df611cb625ff79785c05784580" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#acfbfa9df611cb625ff79785c05784580" > operations_research::sat::SatSolver::GetLastIncompatibleDecisions< / a > < / div > < div class = "ttdeci" > std::vector< Literal > GetLastIncompatibleDecisions()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01375" > sat_solver.cc:1375< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_ad28cbdd5735a0c111a642f39524d969e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad28cbdd5735a0c111a642f39524d969e" > operations_research::sat::SatSolver::ReapplyAssumptionsIfNeeded< / a > < / div > < div class = "ttdeci" > bool ReapplyAssumptionsIfNeeded()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00604" > sat_solver.cc:604< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_ad4494c6831942d344ed1d9758f0e6cd9" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad4494c6831942d344ed1d9758f0e6cd9" > operations_research::sat::SatSolver::ResetWithGivenAssumptions< / a > < / div > < div class = "ttdeci" > bool ResetWithGivenAssumptions(const std::vector< Literal > & assumptions)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00587" > sat_solver.cc:587< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_ad63c4461a1384629cb99413c6df8b9ca" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#ad63c4461a1384629cb99413c6df8b9ca" > operations_research::sat::SatSolver::CurrentDecisionLevel< / a > < / div > < div class = "ttdeci" > int CurrentDecisionLevel() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00376" > sat_solver.h:376< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_adadc001cbdc7263b106fc5886b60ff39" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#adadc001cbdc7263b106fc5886b60ff39" > operations_research::sat::SatSolver::Propagate< / a > < / div > < div class = "ttdeci" > bool Propagate()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01731" > sat_solver.cc:1731< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_adc7569321b063bae82803229623c8f4f" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#adc7569321b063bae82803229623c8f4f" > operations_research::sat::SatSolver::SatSolver< / a > < / div > < div class = "ttdeci" > SatSolver()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00056" > sat_solver.cc:56< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_ae525d235b02bcfc962d845e28f5f0125" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#ae525d235b02bcfc962d845e28f5f0125" > operations_research::sat::SatSolver::deterministic_time< / a > < / div > < div class = "ttdeci" > double deterministic_time() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00113" > sat_solver.cc:113< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_af67fe279478772a6d1492a7f673bda5d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#af67fe279478772a6d1492a7f673bda5d" > operations_research::sat::SatSolver::AddProblemClause< / a > < / div > < div class = "ttdeci" > bool AddProblemClause(absl::Span< const Literal > literals)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00202" > sat_solver.cc:202< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_afbbbc2f0845a82a5a5cfb3f00a61abe9" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#afbbbc2f0845a82a5a5cfb3f00a61abe9" > operations_research::sat::SatSolver::AddUnitClause< / a > < / div > < div class = "ttdeci" > bool AddUnitClause(Literal true_literal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l00185" > sat_solver.cc:185< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_sat_solver_html_afdb0cc1ac877cd981dcd3f0b0763e644" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_sat_solver.html#afdb0cc1ac877cd981dcd3f0b0763e644" > operations_research::sat::SatSolver::ClearNewlyAddedBinaryClauses< / a > < / div > < div class = "ttdeci" > void ClearNewlyAddedBinaryClauses()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l01036" > sat_solver.cc:1036< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html" > operations_research::sat::Trail< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00236" > sat_base.h:236< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a120ef5f82f667fe8a6a38db137bfd2a7" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a120ef5f82f667fe8a6a38db137bfd2a7" > operations_research::sat::Trail::RegisterPropagator< / a > < / div > < div class = "ttdeci" > void RegisterPropagator(SatPropagator *propagator)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00560" > sat_base.h:560< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a1b8fbc7c3c520e649cbfea284f58c9f7" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a1b8fbc7c3c520e649cbfea284f58c9f7" > operations_research::sat::Trail::FailingSatClause< / a > < / div > < div class = "ttdeci" > SatClause * FailingSatClause() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00376" > sat_base.h:376< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a38e7aa21c6a38b5019bb0413d4be489b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a38e7aa21c6a38b5019bb0413d4be489b" > operations_research::sat::Trail::NumberOfEnqueues< / a > < / div > < div class = "ttdeci" > int64_t NumberOfEnqueues() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00380" > sat_base.h:380< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a4793952607a98dfddfbcc17abfabbb4b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a4793952607a98dfddfbcc17abfabbb4b" > operations_research::sat::Trail::Assignment< / a > < / div > < div class = "ttdeci" > const VariablesAssignment & Assignment() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00383" > sat_base.h:383< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a5ed9d5f5c759afe4a008adaabd80c6f8" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a5ed9d5f5c759afe4a008adaabd80c6f8" > operations_research::sat::Trail::AssignmentType< / a > < / div > < div class = "ttdeci" > int AssignmentType(BooleanVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00581" > sat_base.h:581< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a885bcf9213525765f68daf84eed76c2e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a885bcf9213525765f68daf84eed76c2e" > operations_research::sat::Trail::Reason< / a > < / div > < div class = "ttdeci" > absl::Span< const Literal > Reason(BooleanVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00590" > sat_base.h:590< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a89ab9ae41ab13f8847ac18e8beac37ed" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a89ab9ae41ab13f8847ac18e8beac37ed" > operations_research::sat::Trail::ReferenceVarWithSameReason< / a > < / div > < div class = "ttdeci" > BooleanVariable ReferenceVarWithSameReason(BooleanVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00569" > sat_base.h:569< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_a8ef12397d1682615bc3108c397734179" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#a8ef12397d1682615bc3108c397734179" > operations_research::sat::Trail::Index< / a > < / div > < div class = "ttdeci" > int Index() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00381" > sat_base.h:381< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_aa62b9215667a0b7dc6af8251dbaba486" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#aa62b9215667a0b7dc6af8251dbaba486" > operations_research::sat::Trail::Untrail< / a > < / div > < div class = "ttdeci" > void Untrail(int target_trail_index)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00346" > sat_base.h:346< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_ab932e215c6dff3fe8f077d4d6a409c0c" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#ab932e215c6dff3fe8f077d4d6a409c0c" > operations_research::sat::Trail::MutableConflict< / a > < / div > < div class = "ttdeci" > std::vector< Literal > * MutableConflict()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00364" > sat_base.h:364< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_aba78b12088909fb59dbdd0cb064412ae" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#aba78b12088909fb59dbdd0cb064412ae" > operations_research::sat::Trail::Info< / a > < / div > < div class = "ttdeci" > const AssignmentInfo & Info(BooleanVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00384" > sat_base.h:384< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_ace3ed18a3fa848ebbe2a2166e273e903" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#ace3ed18a3fa848ebbe2a2166e273e903" > operations_research::sat::Trail::FailingClause< / a > < / div > < div class = "ttdeci" > absl::Span< const Literal > FailingClause() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00370" > sat_base.h:370< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_adeeeb993a93b815c1c343f9c46ec3564" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#adeeeb993a93b815c1c343f9c46ec3564" > operations_research::sat::Trail::SetDecisionLevel< / a > < / div > < div class = "ttdeci" > void SetDecisionLevel(int level)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00357" > sat_base.h:357< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_af7fbbd00f0e631ce361b5ce6636b2017" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#af7fbbd00f0e631ce361b5ce6636b2017" > operations_research::sat::Trail::Resize< / a > < / div > < div class = "ttdeci" > void Resize(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00548" > sat_base.h:548< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_afb89e56bea39296ff292b51a84491875" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#afb89e56bea39296ff292b51a84491875" > operations_research::sat::Trail::EnqueueWithUnitReason< / a > < / div > < div class = "ttdeci" > void EnqueueWithUnitReason(Literal true_literal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00268" > sat_base.h:268< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_trail_html_afc2d489cf3ae30c4b27ff1e4359e1be9" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#afc2d489cf3ae30c4b27ff1e4359e1be9" > operations_research::sat::Trail::EnqueueSearchDecision< / a > < / div > < div class = "ttdeci" > void EnqueueSearchDecision(Literal true_literal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00263" > sat_base.h:263< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_upper_bounded_linear_constraint_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_upper_bounded_linear_constraint.html" > operations_research::sat::UpperBoundedLinearConstraint< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00382" > pb_constraint.h:382< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_upper_bounded_linear_constraint_html_a79bc25526bc335587dd8b8c433d19306" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_upper_bounded_linear_constraint.html#a79bc25526bc335587dd8b8c433d19306" > operations_research::sat::UpperBoundedLinearConstraint::AddToConflict< / a > < / div > < div class = "ttdeci" > void AddToConflict(MutableUpperBoundedLinearConstraint *conflict)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00442" > pb_constraint.cc:442< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variable_with_same_reason_identifier_html_a85a00c2877e3b249951022638dda5642" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#a85a00c2877e3b249951022638dda5642" > operations_research::sat::VariableWithSameReasonIdentifier::FirstVariableWithSameReason< / a > < / div > < div class = "ttdeci" > BooleanVariable FirstVariableWithSameReason(BooleanVariable var)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00713" > pb_constraint.h:713< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variable_with_same_reason_identifier_html_aa71d36872f416feaa853788a7a7a7ef8" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#aa71d36872f416feaa853788a7a7a7ef8" > operations_research::sat::VariableWithSameReasonIdentifier::Clear< / a > < / div > < div class = "ttdeci" > void Clear()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00708" > pb_constraint.h:708< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variable_with_same_reason_identifier_html_af7fbbd00f0e631ce361b5ce6636b2017" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variable_with_same_reason_identifier.html#af7fbbd00f0e631ce361b5ce6636b2017" > operations_research::sat::VariableWithSameReasonIdentifier::Resize< / a > < / div > < div class = "ttdeci" > void Resize(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8h_source.html#l00702" > pb_constraint.h:702< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_a142694366986039454f53b38e8378815" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a142694366986039454f53b38e8378815" > operations_research::sat::VariablesAssignment::LiteralIsAssigned< / a > < / div > < div class = "ttdeci" > bool LiteralIsAssigned(Literal literal) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00156" > sat_base.h:156< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_a49e751eb6f0e9babd957889bb8e7472d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a49e751eb6f0e9babd957889bb8e7472d" > operations_research::sat::VariablesAssignment::VariableIsAssigned< / a > < / div > < div class = "ttdeci" > bool VariableIsAssigned(BooleanVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00161" > sat_base.h:161< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_a5300129913f51dcb0b1c531e3248490e" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a5300129913f51dcb0b1c531e3248490e" > operations_research::sat::VariablesAssignment::LiteralIsTrue< / a > < / div > < div class = "ttdeci" > bool LiteralIsTrue(Literal literal) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00153" > sat_base.h:153< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_a945bb6c1e83f281fdde5778473a12b37" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#a945bb6c1e83f281fdde5778473a12b37" > operations_research::sat::VariablesAssignment::AssignFromTrueLiteral< / a > < / div > < div class = "ttdeci" > void AssignFromTrueLiteral(Literal literal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00136" > sat_base.h:136< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_ac821b9b8b54da703731ce70864668a89" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#ac821b9b8b54da703731ce70864668a89" > operations_research::sat::VariablesAssignment::GetTrueLiteralForAssignedVariable< / a > < / div > < div class = "ttdeci" > Literal GetTrueLiteralForAssignedVariable(BooleanVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00168" > sat_base.h:168< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_acfd1646011e643f58fd7dc66d9cc90a5" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#acfd1646011e643f58fd7dc66d9cc90a5" > operations_research::sat::VariablesAssignment::LiteralIsFalse< / a > < / div > < div class = "ttdeci" > bool LiteralIsFalse(Literal literal) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00150" > sat_base.h:150< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_ae19413c447377161d432f18d1323a037" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#ae19413c447377161d432f18d1323a037" > operations_research::sat::VariablesAssignment::NumberOfVariables< / a > < / div > < div class = "ttdeci" > int NumberOfVariables() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00173" > sat_base.h:173< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_variables_assignment_html_af7fbbd00f0e631ce361b5ce6636b2017" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_variables_assignment.html#af7fbbd00f0e631ce361b5ce6636b2017" > operations_research::sat::VariablesAssignment::Resize< / a > < / div > < div class = "ttdeci" > void Resize(int num_variables)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00129" > sat_base.h:129< / a > < / div > < / div >
< div class = "ttc" id = "aclause_8h_html" > < div class = "ttname" > < a href = "clause_8h.html" > clause.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aconstraint__solver_2table_8cc_html_a9293e4d29cac928301645070dd307683" > < div class = "ttname" > < a href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > < / div > < div class = "ttdeci" > int64_t b< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "constraint__solver_2table_8cc_source.html#l00047" > constraint_solver/table.cc:47< / a > < / div > < / div >
< div class = "ttc" id = "aconstraint__solver_2table_8cc_html_acb18315d548212835cd8ed4287e6c0b6" > < div class = "ttname" > < a href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > < / div > < div class = "ttdeci" > int64_t a< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "constraint__solver_2table_8cc_source.html#l00046" > constraint_solver/table.cc:46< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "acp__model__fz__solver_8cc_html_a10a1eab179b472c030bdc2a2efef7219" > < div class = "ttname" > < a href = "cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219" > parameters< / a > < / div > < div class = "ttdeci" > SatParameters parameters< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cp__model__fz__solver_8cc_source.html#l00119" > cp_model_fz_solver.cc:119< / a > < / div > < / div >
< div class = "ttc" id = "acp__model__solver_8cc_html_a21696c8707868a3d522d1bee261f4185" > < div class = "ttname" > < a href = "cp__model__solver_8cc.html#a21696c8707868a3d522d1bee261f4185" > clauses< / a > < / div > < div class = "ttdeci" > SharedClausesManager * clauses< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cp__model__solver_8cc_source.html#l02056" > cp_model_solver.cc:2056< / a > < / div > < / div >
< div class = "ttc" id = "acp__model__solver_8cc_html_aec8af5c1be4e1b6d4330e1161028de21" > < div class = "ttname" > < a href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > < / div > < div class = "ttdeci" > ModelSharedTimeLimit * time_limit< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cp__model__solver_8cc_source.html#l02050" > cp_model_solver.cc:2050< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "ademon__profiler_8cc_html_ac072af30c4ffbc834bb4c681f6ecb514" > < div class = "ttname" > < a href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > < / div > < div class = "ttdeci" > int64_t value< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "demon__profiler_8cc_source.html#l00044" > demon_profiler.cc:44< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "adrat__proof__handler_8h_html" > < div class = "ttname" > < a href = "drat__proof__handler_8h.html" > drat_proof_handler.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "ag__gurobi_8cc_html_a2237393c7ae7ad7344c9885066d5ab6d" > < div class = "ttname" > < a href = "g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d" > status< / a > < / div > < div class = "ttdeci" > absl::Status status< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "g__gurobi_8cc_source.html#l00035" > g_gurobi.cc:35< / a > < / div > < / div >
< div class = "ttc" id = "agscip__solver_8cc_html_a1ba5ca0f61f2fa13bd23bf0f89004f35" > < div class = "ttname" > < a href = "gscip__solver_8cc.html#a1ba5ca0f61f2fa13bd23bf0f89004f35" > upper_bound< / a > < / div > < div class = "ttdeci" > double upper_bound< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "gscip__solver_8cc_source.html#l00137" > gscip_solver.cc:137< / a > < / div > < / div >
< div class = "ttc" id = "agscip__solver_8cc_html_a1e2f9a2352c1d9a6cada9544898fceec" > < div class = "ttname" > < a href = "gscip__solver_8cc.html#a1e2f9a2352c1d9a6cada9544898fceec" > lower_bound< / a > < / div > < div class = "ttdeci" > double lower_bound< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "gscip__solver_8cc_source.html#l00136" > gscip_solver.cc:136< / a > < / div > < / div >
< div class = "ttc" id = "agurobi__interface_8cc_html_a0728f23c9a47655d38e0bf1a2f200bcf" > < div class = "ttname" > < a href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > < / div > < div class = "ttdeci" > GRBmodel * model< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "gurobi__interface_8cc_source.html#l00274" > gurobi_interface.cc:274< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "alocal__search_8cc_html_a750b5d744c39a06bfb13e6eb010e35d0" > < div class = "ttname" > < a href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > < / div > < div class = "ttdeci" > int index< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "local__search_8cc_source.html#l02750" > local_search.cc:2750< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "alog__severity_8h_html_ab4a2cbab234914b320b7fae11b6e8cb9" > < div class = "ttname" > < a href = "log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9" > INFO< / a > < / div > < div class = "ttdeci" > const int INFO< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "log__severity_8h_source.html#l00031" > log_severity.h:31< / a > < / div > < / div >
< div class = "ttc" id = "alog__severity_8h_html_acdd38e3c9f22f127d7776920e3079eda" > < div class = "ttname" > < a href = "log__severity_8h.html#acdd38e3c9f22f127d7776920e3079eda" > FATAL< / a > < / div > < div class = "ttdeci" > const int FATAL< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "log__severity_8h_source.html#l00032" > log_severity.h:32< / a > < / div > < / div >
< div class = "ttc" id = "amacros_8h_html_a7f536a3b33f9bed8f75734e035d30725" > < div class = "ttname" > < a href = "macros_8h.html#a7f536a3b33f9bed8f75734e035d30725" > DEBUG_MODE< / a > < / div > < div class = "ttdeci" > const bool DEBUG_MODE< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "macros_8h_source.html#l00024" > macros.h:24< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1glop_html_ac89c7b45754e9a6bdabc08bea586fc4e" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1glop.html#ac89c7b45754e9a6bdabc08bea586fc4e" > operations_research::glop::Index< / a > < / div > < div class = "ttdeci" > int32_t Index< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "lp__types_8h_source.html#l00038" > lp_types.h:38< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1math__opt_html_a5de89a1f6e3f80a49a0d76136d8044e2" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2" > operations_research::math_opt::swap< / a > < / div > < div class = "ttdeci" > void swap(IdMap< K, V > & a, IdMap< K, V > & b)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "id__map_8h_source.html#l00262" > id_map.h:262< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1math__opt_html_ab61209db5b13f0d424da009e414298fc" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1math__opt.html#ab61209db5b13f0d424da009e414298fc" > operations_research::math_opt::Coefficient< / a > < / div > < div class = "ttdeci" > std::tuple< int64_t, int64_t, const double > Coefficient< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sparse__collection__matchers_8h_source.html#l00061" > sparse_collection_matchers.h:61< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a01c76d0c46e2975d10e45ab04877f4ac" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a01c76d0c46e2975d10e45ab04877f4ac" > operations_research::sat::ComputeCanonicalRhs< / a > < / div > < div class = "ttdeci" > Coefficient ComputeCanonicalRhs(Coefficient upper_bound, Coefficient bound_shift, Coefficient max_value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00172" > pb_constraint.cc:172< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a5c5399274f079c718ec46bf4b3032d27" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a5c5399274f079c718ec46bf4b3032d27" > operations_research::sat::ComputeNegatedCanonicalRhs< / a > < / div > < div class = "ttdeci" > Coefficient ComputeNegatedCanonicalRhs(Coefficient lower_bound, Coefficient bound_shift, Coefficient max_value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00190" > pb_constraint.cc:190< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a6fb8349259fa849de0789a4ec58a8492" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a6fb8349259fa849de0789a4ec58a8492" > operations_research::sat::MinimizeCore< / a > < / div > < div class = "ttdeci" > void MinimizeCore(SatSolver *solver, std::vector< Literal > *core)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l02655" > sat_solver.cc:2655< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a762ee6abbb57f9f730df6033aafdf4fc" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a762ee6abbb57f9f730df6033aafdf4fc" > operations_research::sat::SatStatusString< / a > < / div > < div class = "ttdeci" > std::string SatStatusString(SatSolver::Status status)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l02638" > sat_solver.cc:2638< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a8860b588974cb8ffaf2ac97eafd67b3e" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a8860b588974cb8ffaf2ac97eafd67b3e" > operations_research::sat::ComputeBooleanLinearExpressionCanonicalForm< / a > < / div > < div class = "ttdeci" > bool ComputeBooleanLinearExpressionCanonicalForm(std::vector< LiteralWithCoeff > *cst, Coefficient *bound_shift, Coefficient *max_value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00053" > pb_constraint.cc:53< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_acf18431db5241d6ae15e5db2470d9079" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#acf18431db5241d6ae15e5db2470d9079" > operations_research::sat::BooleanLinearExpressionIsCanonical< / a > < / div > < div class = "ttdeci" > bool BooleanLinearExpressionIsCanonical(const std::vector< LiteralWithCoeff > & cst)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pb__constraint_8cc_source.html#l00148" > pb_constraint.cc:148< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_ae1ffd76bca69ccb2e7b65dfe2cf76f2e" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#ae1ffd76bca69ccb2e7b65dfe2cf76f2e" > operations_research::sat::MoveOneUnprocessedLiteralLast< / a > < / div > < div class = "ttdeci" > int MoveOneUnprocessedLiteralLast(const absl::btree_set< LiteralIndex > & processed, int relevant_prefix_size, std::vector< Literal > *literals)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2util_8cc_source.html#l00282" > sat/util.cc:282< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_aed3a7826cb80e5dfe7cadb141fde73f2" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#aed3a7826cb80e5dfe7cadb141fde73f2" > operations_research::sat::kUnsatTrailIndex< / a > < / div > < div class = "ttdeci" > const int kUnsatTrailIndex< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00056" > sat_solver.h:56< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sysinfo_html_a19148076f1e5c0b2d2444a705d9e12c5" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sysinfo.html#a19148076f1e5c0b2d2444a705d9e12c5" > operations_research::sysinfo::MemoryUsageProcess< / a > < / div > < div class = "ttdeci" > int64_t MemoryUsageProcess()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "port_2sysinfo_8cc_source.html#l00024" > port/sysinfo.cc:24< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html" > < div class = "ttname" > < a href = "namespaceoperations__research.html" > operations_research< / a > < / div > < div class = "ttdoc" > Collection of objects used to extend the Constraint Solver library.< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "dense__doubly__linked__list_8h_source.html#l00021" > dense_doubly_linked_list.h:21< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a87d7aa58897e0042898d1c2207deda18" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a87d7aa58897e0042898d1c2207deda18" > operations_research::ProtobufShortDebugString< / a > < / div > < div class = "ttdeci" > std::string ProtobufShortDebugString(const P & message)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "port_2proto__utils_8h_source.html#l00038" > port/proto_utils.h:38< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_acb92bdbce12d475f965f6db3c5f5b7b5" > < div class = "ttname" > < a href = "namespaceoperations__research.html#acb92bdbce12d475f965f6db3c5f5b7b5" > operations_research::MemoryUsage< / a > < / div > < div class = "ttdeci" > std::string MemoryUsage()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8cc_source.html#l00025" > stats.cc:25< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_ae1bd0133149b70b678b123524541aaad" > < div class = "ttname" > < a href = "namespaceoperations__research.html#ae1bd0133149b70b678b123524541aaad" > operations_research::SafeAddInto< / a > < / div > < div class = "ttdeci" > bool SafeAddInto(IntegerType a, IntegerType *b)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "saturated__arithmetic_8h_source.html#l00089" > saturated_arithmetic.h:89< / a > < / div > < / div >
< div class = "ttc" id = "anamespacestd_html" > < div class = "ttname" > < a href = "namespacestd.html" > std< / a > < / div > < div class = "ttdoc" > STL namespace.< / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "aoptimization_8cc_html_af63dcc00f2023fdf498e0829e6fb8a6b" > < div class = "ttname" > < a href = "optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b" > literal< / a > < / div > < div class = "ttdeci" > Literal literal< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "optimization_8cc_source.html#l00089" > optimization.cc:89< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aparser_8yy_8cc_html_a5a634cf4429798b1c921a81de8250051" > < div class = "ttname" > < a href = "parser_8yy_8cc.html#a5a634cf4429798b1c921a81de8250051" > input< / a > < / div > < div class = "ttdeci" > static int input(yyscan_t yyscanner)< / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "apb__constraint_8h_html" > < div class = "ttname" > < a href = "pb__constraint_8h.html" > pb_constraint.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aport_2proto__utils_8h_html" > < div class = "ttname" > < a href = "port_2proto__utils_8h.html" > proto_utils.h< / a > < / div > < / div >
< div class = "ttc" id = "aport_2sysinfo_8h_html" > < div class = "ttname" > < a href = "port_2sysinfo_8h.html" > sysinfo.h< / a > < / div > < / div >
< div class = "ttc" id = "aresource_8cc_html_af92a8383a05fdf586a52263d358f5ada" > < div class = "ttname" > < a href = "resource_8cc.html#af92a8383a05fdf586a52263d358f5ada" > interval< / a > < / div > < div class = "ttdeci" > IntervalVar * interval< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "resource_8cc_source.html#l00100" > resource.cc:100< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "arestart_8h_html" > < div class = "ttname" > < a href = "restart_8h.html" > restart.h< / a > < / div > < / div >
< div class = "ttc" id = "asat_2model_8h_html" > < div class = "ttname" > < a href = "sat_2model_8h.html" > model.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "asat_2util_8h_html" > < div class = "ttname" > < a href = "sat_2util_8h.html" > util.h< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "asat__base_8h_html" > < div class = "ttname" > < a href = "sat__base_8h.html" > sat_base.h< / a > < / div > < / div >
< div class = "ttc" id = "asat__decision_8h_html" > < div class = "ttname" > < a href = "sat__decision_8h.html" > sat_decision.h< / a > < / div > < / div >
< div class = "ttc" id = "asat__solver_8cc_html_a8392bdc4ed570e6a95c7fca35b09f83f" > < div class = "ttname" > < a href = "sat__solver_8cc.html#a8392bdc4ed570e6a95c7fca35b09f83f" > var< / a > < / div > < div class = "ttdeci" > BooleanVariable var< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l02453" > sat_solver.cc:2453< / a > < / div > < / div >
< div class = "ttc" id = "asat__solver_8cc_html_aa01147b1f07072d246c76dc85d69df7c" > < div class = "ttname" > < a href = "sat__solver_8cc.html#aa01147b1f07072d246c76dc85d69df7c" > weight< / a > < / div > < div class = "ttdeci" > int weight< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8cc_source.html#l02454" > sat_solver.cc:2454< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "asat__solver_8h_html" > < div class = "ttname" > < a href = "sat__solver_8h.html" > sat_solver.h< / a > < / div > < / div >
< div class = "ttc" id = "asaturated__arithmetic_8h_html" > < div class = "ttname" > < a href = "saturated__arithmetic_8h.html" > saturated_arithmetic.h< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "astats_8h_html" > < div class = "ttname" > < a href = "stats_8h.html" > stats.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "astats_8h_html_a3c3e6b102f0d91c523099325c98e1887" > < div class = "ttname" > < a href = "stats_8h.html#a3c3e6b102f0d91c523099325c98e1887" > IF_STATS_ENABLED< / a > < / div > < div class = "ttdeci" > #define IF_STATS_ENABLED(instructions)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8h_source.html#l00437" > stats.h:437< / a > < / div > < / div >
< div class = "ttc" id = "astats_8h_html_a9995704aaaf45fc21e08c847551a8d04" > < div class = "ttname" > < a href = "stats_8h.html#a9995704aaaf45fc21e08c847551a8d04" > SCOPED_TIME_STAT< / a > < / div > < div class = "ttdeci" > #define SCOPED_TIME_STAT(stats)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stats_8h_source.html#l00438" > stats.h:438< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "astrong__integers_8h_html" > < div class = "ttname" > < a href = "strong__integers_8h.html" > strong_integers.h< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_assignment_info_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_assignment_info.html" > operations_research::sat::AssignmentInfo< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00190" > sat_base.h:190< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_assignment_info_html_a0f2d611d5c2d56f60646827438acf3af" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_assignment_info.html#a0f2d611d5c2d56f60646827438acf3af" > operations_research::sat::AssignmentInfo::trail_index< / a > < / div > < div class = "ttdeci" > int32_t trail_index< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00211" > sat_base.h:211< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_assignment_info_html_a6a330c3b2adf87bfa27e9a9450d8bc40" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_assignment_info.html#a6a330c3b2adf87bfa27e9a9450d8bc40" > operations_research::sat::AssignmentInfo::level< / a > < / div > < div class = "ttdeci" > uint32_t level< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00202" > sat_base.h:202< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_assignment_type_html_a916a0609367bae97bd6788542d4925eb" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_assignment_type.html#a916a0609367bae97bd6788542d4925eb" > operations_research::sat::AssignmentType::kSearchDecision< / a > < / div > < div class = "ttdeci" > static constexpr int kSearchDecision< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00226" > sat_base.h:226< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_binary_clause_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_binary_clause.html" > operations_research::sat::BinaryClause< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "clause_8h_source.html#l00376" > clause.h:376< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_sat_solver_1_1_decision_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_sat_solver_1_1_decision.html" > operations_research::sat::SatSolver::Decision< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__solver_8h_source.html#l00366" > sat_solver.h:366< / a > < / div > < / div >
< div class = "ttc" id = "atime__limit_8h_html" > < div class = "ttname" > < a href = "time__limit_8h.html" > time_limit.h< / a > < / div > < / div >
< div class = "ttc" id = "atimer_8h_html" > < div class = "ttname" > < a href = "timer_8h.html" > timer.h< / a > < / div > < / div >
< div class = "ttc" id = "autil_2logging_8h_html" > < div class = "ttname" > < a href = "util_2logging_8h.html" > logging.h< / a > < / div > < / div >
< div class = "ttc" id = "autil_2logging_8h_html_a5f67b653dd99ddbe5e3367e3b4b7b532" > < div class = "ttname" > < a href = "util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532" > SOLVER_LOG< / a > < / div > < div class = "ttdeci" > #define SOLVER_LOG(logger,...)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "util_2logging_8h_source.html#l00069" > util/logging.h:69< / a > < / div > < / div >
< div class = "ttc" id = "avariable__and__expressions_8cc_html_a2091cd7d80fdd31762020bce86138587" > < div class = "ttname" > < a href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > < / div > < div class = "ttdeci" > const double coeff< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variable__and__expressions_8cc_source.html#l00105" > variable_and_expressions.cc:105< / a > < / div > < / div >
< div class = "ttc" id = "avlog__is__on_8h_html_a956152cad330225654d128f35c00efce" > < div class = "ttname" > < a href = "vlog__is__on_8h.html#a956152cad330225654d128f35c00efce" > VLOG_IS_ON< / a > < / div > < div class = "ttdeci" > #define VLOG_IS_ON(verboselevel)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "vlog__is__on_8h_source.html#l00044" > vlog_is_on.h:44< / a > < / div > < / div >
2021-01-26 11:28:50 +01:00
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2020-09-02 09:42:51 +02:00
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