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< a href = "cuts_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 >
< div class = "line" > < a id = "l00011" name = "l00011" > < / a > < span class = "lineno" > 11< / span > < span class = "comment" > // See the License for the specific language governing permissions and< / span > < / div >
< div class = "line" > < a id = "l00012" name = "l00012" > < / a > < span class = "lineno" > 12< / span > < span class = "comment" > // limitations under the License.< / span > < / div >
< div class = "line" > < a id = "l00013" name = "l00013" > < / a > < span class = "lineno" > 13< / span > < / div >
< div class = "line" > < a id = "l00014" name = "l00014" > < / a > < span class = "lineno" > 14< / span > < span class = "preprocessor" > #include " < a class = "code" href = "cuts_8h.html" > ortools/sat/cuts.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 < cmath> < / span > < / div >
< div class = "line" > < a id = "l00018" name = "l00018" > < / a > < span class = "lineno" > 18< / span > < span class = "preprocessor" > #include < cstdint> < / span > < / div >
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< div class = "line" > < a id = "l00019" name = "l00019" > < / a > < span class = "lineno" > 19< / span > < span class = "preprocessor" > #include < cstdlib> < / span > < / div >
< div class = "line" > < a id = "l00020" name = "l00020" > < / a > < span class = "lineno" > 20< / span > < span class = "preprocessor" > #include < functional> < / span > < / div >
< div class = "line" > < a id = "l00021" name = "l00021" > < / a > < span class = "lineno" > 21< / span > < span class = "preprocessor" > #include < limits> < / span > < / div >
< div class = "line" > < a id = "l00022" name = "l00022" > < / a > < span class = "lineno" > 22< / span > < span class = "preprocessor" > #include < memory> < / span > < / div >
< div class = "line" > < a id = "l00023" name = "l00023" > < / a > < span class = "lineno" > 23< / span > < span class = "preprocessor" > #include < string> < / span > < / div >
< div class = "line" > < a id = "l00024" name = "l00024" > < / a > < span class = "lineno" > 24< / span > < span class = "preprocessor" > #include < utility> < / span > < / div >
< div class = "line" > < a id = "l00025" name = "l00025" > < / a > < span class = "lineno" > 25< / span > < span class = "preprocessor" > #include < vector> < / span > < / div >
< div class = "line" > < a id = "l00026" name = "l00026" > < / a > < span class = "lineno" > 26< / span > < / div >
< div class = "line" > < a id = "l00027" name = "l00027" > < / a > < span class = "lineno" > 27< / span > < span class = "preprocessor" > #include " absl/container/btree_set.h" < / span > < / div >
< 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 >
< div class = "line" > < a id = "l00029" name = "l00029" > < / a > < span class = "lineno" > 29< / span > < span class = "preprocessor" > #include " absl/container/flat_hash_set.h" < / span > < / div >
< div class = "line" > < a id = "l00030" name = "l00030" > < / a > < span class = "lineno" > 30< / span > < span class = "preprocessor" > #include " absl/memory/memory.h" < / span > < / div >
< div class = "line" > < a id = "l00031" name = "l00031" > < / a > < span class = "lineno" > 31< / span > < span class = "preprocessor" > #include " absl/meta/type_traits.h" < / span > < / div >
< div class = "line" > < a id = "l00032" name = "l00032" > < / a > < span class = "lineno" > 32< / span > < span class = "preprocessor" > #include " < a class = "code" href = "knapsack__solver__for__cuts_8h.html" > ortools/algorithms/knapsack_solver_for_cuts.h< / a > " < / 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 = "stl__util_8h.html" > ortools/base/stl_util.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 = "strong__vector_8h.html" > ortools/base/strong_vector.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 = "clause_8h.html" > ortools/sat/clause.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 = "implied__bounds_8h.html" > ortools/sat/implied_bounds.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 = "integer_8h.html" > ortools/sat/integer.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_2linear__constraint_8h.html" > ortools/sat/linear_constraint.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 = "linear__constraint__manager_8h.html" > ortools/sat/linear_constraint_manager.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 = "sat_2model_8h.html" > ortools/sat/model.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 = "saturated__arithmetic_8h.html" > ortools/util/saturated_arithmetic.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00044" name = "l00044" > < / a > < span class = "lineno" > 44< / span > < span class = "preprocessor" > #include " < a class = "code" href = "sorted__interval__list_8h.html" > ortools/util/sorted_interval_list.h< / a > " < / span > < / div >
< div class = "line" > < a id = "l00045" name = "l00045" > < / a > < span class = "lineno" > 45< / 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 = "l00046" name = "l00046" > < / a > < span class = "lineno" > 46< / 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 = "l00047" name = "l00047" > < / a > < span class = "lineno" > 47< / span > < / div >
< div class = "line" > < a id = "l00048" name = "l00048" > < / a > < span class = "lineno" > 48< / span > < span class = "keyword" > namespace < / span > < a class = "code hl_namespace" href = "namespaceoperations__research.html" > operations_research< / a > {< / div >
< div class = "line" > < a id = "l00049" name = "l00049" > < / a > < span class = "lineno" > 49< / span > < span class = "keyword" > namespace < / span > sat {< / div >
< div class = "line" > < a id = "l00050" name = "l00050" > < / a > < span class = "lineno" > 50< / span > < / div >
< div class = "line" > < a id = "l00051" name = "l00051" > < / a > < span class = "lineno" > 51< / span > < span class = "keyword" > namespace < / 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 = "comment" > // Minimum amount of violation of the cut constraint by the solution. This< / span > < / div >
< div class = "line" > < a id = "l00054" name = "l00054" > < / a > < span class = "lineno" > 54< / span > < span class = "comment" > // is needed to avoid numerical issues and adding cuts with minor effect.< / span > < / div >
< div class = "line" > < a id = "l00055" name = "l00055" > < / a > < span class = "lineno" > 55< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > kMinCutViolation = 1e-4;< / div >
< div class = "line" > < a id = "l00056" name = "l00056" > < / a > < span class = "lineno" > 56< / span > < / div >
< div class = "line" > < a id = "l00057" name = "l00057" > < / a > < span class = "lineno" > 57< / span > < span class = "comment" > // Returns the lp value of a Literal.< / span > < / div >
< div class = "line" > < a id = "l00058" name = "l00058" > < / a > < span class = "lineno" > 58< / span > < span class = "keywordtype" > double< / span > GetLiteralLpValue(< / div >
< div class = "line" > < a id = "l00059" name = "l00059" > < / a > < span class = "lineno" > 59< / span > < span class = "keyword" > const< / span > Literal lit,< / div >
< div class = "line" > < a id = "l00060" name = "l00060" > < / a > < span class = "lineno" > 60< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l00061" name = "l00061" > < / a > < span class = "lineno" > 61< / span > < span class = "keyword" > const< / span > IntegerEncoder* encoder) {< / div >
< div class = "line" > < a id = "l00062" name = "l00062" > < / a > < span class = "lineno" > 62< / span > < span class = "keyword" > const< / span > IntegerVariable direct_view = encoder-> GetLiteralView(lit);< / div >
< div class = "line" > < a id = "l00063" name = "l00063" > < / a > < span class = "lineno" > 63< / span > < span class = "keywordflow" > if< / span > (direct_view != < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > ) {< / div >
< div class = "line" > < a id = "l00064" name = "l00064" > < / a > < span class = "lineno" > 64< / span > < span class = "keywordflow" > return< / span > lp_values[direct_view];< / div >
< div class = "line" > < a id = "l00065" name = "l00065" > < / a > < span class = "lineno" > 65< / span > }< / div >
< div class = "line" > < a id = "l00066" name = "l00066" > < / a > < span class = "lineno" > 66< / span > < span class = "keyword" > const< / span > IntegerVariable opposite_view = encoder-> GetLiteralView(lit.Negated());< / div >
< div class = "line" > < a id = "l00067" name = "l00067" > < / a > < span class = "lineno" > 67< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0" > DCHECK_NE< / a > (opposite_view, < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > );< / div >
< div class = "line" > < a id = "l00068" name = "l00068" > < / a > < span class = "lineno" > 68< / span > < span class = "keywordflow" > return< / span > 1.0 - lp_values[opposite_view];< / div >
< div class = "line" > < a id = "l00069" name = "l00069" > < / a > < span class = "lineno" > 69< / span > }< / div >
< div class = "line" > < a id = "l00070" name = "l00070" > < / a > < span class = "lineno" > 70< / span > < / div >
< div class = "line" > < a id = "l00071" name = "l00071" > < / a > < span class = "lineno" > 71< / span > < span class = "comment" > // Returns a constraint that disallow all given variables to be at their current< / span > < / div >
< div class = "line" > < a id = "l00072" name = "l00072" > < / a > < span class = "lineno" > 72< / span > < span class = "comment" > // upper bound. The arguments must form a non-trival constraint of the form< / span > < / div >
< div class = "line" > < a id = "l00073" name = "l00073" > < / a > < span class = "lineno" > 73< / span > < span class = "comment" > // sum terms (coeff * var) < = upper_bound.< / span > < / div >
< div class = "line" > < a id = "l00074" name = "l00074" > < / a > < span class = "lineno" > 74< / span > LinearConstraint GenerateKnapsackCutForCover(< / div >
< div class = "line" > < a id = "l00075" name = "l00075" > < / a > < span class = "lineno" > 75< / span > < span class = "keyword" > const< / span > std::vector< IntegerVariable> & vars,< / div >
< div class = "line" > < a id = "l00076" name = "l00076" > < / a > < span class = "lineno" > 76< / span > < span class = "keyword" > const< / span > std::vector< IntegerValue> & coeffs, < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "gscip__solver_8cc.html#a1ba5ca0f61f2fa13bd23bf0f89004f35" > upper_bound< / a > ,< / div >
< div class = "line" > < a id = "l00077" name = "l00077" > < / a > < span class = "lineno" > 77< / span > < span class = "keyword" > const< / span > IntegerTrail& integer_trail) {< / div >
< div class = "line" > < a id = "l00078" name = "l00078" > < / a > < span class = "lineno" > 78< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (vars.size(), coeffs.size());< / div >
< div class = "line" > < a id = "l00079" name = "l00079" > < / a > < span class = "lineno" > 79< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6" > CHECK_GT< / a > (vars.size(), 0);< / div >
< div class = "line" > < a id = "l00080" name = "l00080" > < / a > < span class = "lineno" > 80< / span > LinearConstraint cut;< / div >
< div class = "line" > < a id = "l00081" name = "l00081" > < / a > < span class = "lineno" > 81< / span > IntegerValue cut_upper_bound = IntegerValue(0);< / div >
< div class = "line" > < a id = "l00082" name = "l00082" > < / a > < span class = "lineno" > 82< / span > IntegerValue max_coeff = coeffs[0];< / div >
< div class = "line" > < a id = "l00083" name = "l00083" > < / a > < span class = "lineno" > 83< / span > < span class = "comment" > // slack = \sum_{i}(coeffs[i] * upper_bound[i]) - upper_bound.< / span > < / div >
< div class = "line" > < a id = "l00084" name = "l00084" > < / a > < span class = "lineno" > 84< / span > IntegerValue slack = -< a class = "code hl_variable" href = "gscip__solver_8cc.html#a1ba5ca0f61f2fa13bd23bf0f89004f35" > upper_bound< / a > ;< / div >
< div class = "line" > < a id = "l00085" name = "l00085" > < / a > < span class = "lineno" > 85< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < vars.size(); ++i) {< / div >
< div class = "line" > < a id = "l00086" name = "l00086" > < / a > < span class = "lineno" > 86< / span > < span class = "keyword" > const< / span > IntegerValue var_upper_bound =< / div >
< div class = "line" > < a id = "l00087" name = "l00087" > < / a > < span class = "lineno" > 87< / span > integer_trail.LevelZeroUpperBound(vars[i]);< / div >
< div class = "line" > < a id = "l00088" name = "l00088" > < / a > < span class = "lineno" > 88< / span > cut_upper_bound += var_upper_bound;< / div >
< div class = "line" > < a id = "l00089" name = "l00089" > < / a > < span class = "lineno" > 89< / span > cut.vars.push_back(vars[i]);< / div >
< div class = "line" > < a id = "l00090" name = "l00090" > < / a > < span class = "lineno" > 90< / span > cut.coeffs.push_back(IntegerValue(1));< / div >
< div class = "line" > < a id = "l00091" name = "l00091" > < / a > < span class = "lineno" > 91< / span > max_coeff = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_coeff, coeffs[i]);< / div >
< div class = "line" > < a id = "l00092" name = "l00092" > < / a > < span class = "lineno" > 92< / span > slack += coeffs[i] * var_upper_bound;< / div >
< div class = "line" > < a id = "l00093" name = "l00093" > < / a > < span class = "lineno" > 93< / span > }< / div >
< div class = "line" > < a id = "l00094" name = "l00094" > < / a > < span class = "lineno" > 94< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7e03ec13560fa94a8fea569960d7efc6" > CHECK_GT< / a > (slack, 0.0) < < < span class = "stringliteral" > " Invalid cover for knapsack cut." < / span > ;< / div >
< div class = "line" > < a id = "l00095" name = "l00095" > < / a > < span class = "lineno" > 95< / span > cut_upper_bound -= < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a29b96869d2a821cf1d2e6099e7a0f51b" > CeilRatio< / a > (slack, max_coeff);< / div >
< div class = "line" > < a id = "l00096" name = "l00096" > < / a > < span class = "lineno" > 96< / span > cut.lb = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ;< / div >
< div class = "line" > < a id = "l00097" name = "l00097" > < / a > < span class = "lineno" > 97< / span > cut.ub = cut_upper_bound;< / div >
< div class = "line" > < a id = "l00098" name = "l00098" > < / a > < span class = "lineno" > 98< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Generated Knapsack Constraint:" < / span > < < cut.DebugString();< / div >
< div class = "line" > < a id = "l00099" name = "l00099" > < / a > < span class = "lineno" > 99< / span > < span class = "keywordflow" > return< / span > cut;< / div >
< div class = "line" > < a id = "l00100" name = "l00100" > < / a > < span class = "lineno" > 100< / span > }< / 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 > < span class = "keywordtype" > bool< / span > SolutionSatisfiesConstraint(< / div >
< div class = "line" > < a id = "l00103" name = "l00103" > < / a > < span class = "lineno" > 103< / span > < span class = "keyword" > const< / span > LinearConstraint& constraint,< / div >
< div class = "line" > < a id = "l00104" name = "l00104" > < / a > < span class = "lineno" > 104< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values) {< / div >
< div class = "line" > < a id = "l00105" name = "l00105" > < / a > < span class = "lineno" > 105< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > activity = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aea18a909121c1c2ba4a818298611f0b2" > ComputeActivity< / a > (constraint, lp_values);< / div >
< div class = "line" > < a id = "l00106" name = "l00106" > < / a > < span class = "lineno" > 106< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > tolerance = 1e-6;< / div >
< div class = "line" > < a id = "l00107" name = "l00107" > < / a > < span class = "lineno" > 107< / span > < span class = "keywordflow" > return< / span > (activity < = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (constraint.ub) + tolerance & & < / div >
< div class = "line" > < a id = "l00108" name = "l00108" > < / a > < span class = "lineno" > 108< / span > activity > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (constraint.lb) - tolerance)< / div >
< div class = "line" > < a id = "l00109" name = "l00109" > < / a > < span class = "lineno" > 109< / span > ? true< / div >
< div class = "line" > < a id = "l00110" name = "l00110" > < / a > < span class = "lineno" > 110< / span > : < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00111" name = "l00111" > < / a > < span class = "lineno" > 111< / span > }< / 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" > 113< / span > < span class = "keywordtype" > bool< / span > SmallRangeAndAllCoefficientsMagnitudeAreTheSame(< / div >
< div class = "line" > < a id = "l00114" name = "l00114" > < / a > < span class = "lineno" > 114< / span > < span class = "keyword" > const< / span > LinearConstraint& constraint, IntegerTrail* integer_trail) {< / div >
< div class = "line" > < a id = "l00115" name = "l00115" > < / a > < span class = "lineno" > 115< / span > < span class = "keywordflow" > if< / span > (constraint.vars.empty()) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00116" name = "l00116" > < / a > < span class = "lineno" > 116< / span > < / div >
< div class = "line" > < a id = "l00117" name = "l00117" > < / a > < span class = "lineno" > 117< / span > < span class = "keyword" > const< / span > int64_t magnitude = std::abs(constraint.coeffs[0].value());< / div >
< div class = "line" > < a id = "l00118" name = "l00118" > < / a > < span class = "lineno" > 118< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 1; i < constraint.coeffs.size(); ++i) {< / div >
< div class = "line" > < a id = "l00119" name = "l00119" > < / a > < span class = "lineno" > 119< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.vars[i];< / div >
< div class = "line" > < a id = "l00120" name = "l00120" > < / a > < span class = "lineno" > 120< / span > < span class = "keywordflow" > if< / span > (integer_trail-> LevelZeroUpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) -< / div >
< div class = "line" > < a id = "l00121" name = "l00121" > < / a > < span class = "lineno" > 121< / span > integer_trail-> LevelZeroLowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) > < / div >
< div class = "line" > < a id = "l00122" name = "l00122" > < / a > < span class = "lineno" > 122< / span > 1) {< / div >
< div class = "line" > < a id = "l00123" name = "l00123" > < / a > < span class = "lineno" > 123< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / 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 = "keywordflow" > if< / span > (std::abs(constraint.coeffs[i].value()) != magnitude) {< / div >
< div class = "line" > < a id = "l00126" name = "l00126" > < / a > < span class = "lineno" > 126< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00127" name = "l00127" > < / a > < span class = "lineno" > 127< / span > }< / div >
< div class = "line" > < a id = "l00128" name = "l00128" > < / a > < span class = "lineno" > 128< / span > }< / div >
< div class = "line" > < a id = "l00129" name = "l00129" > < / a > < span class = "lineno" > 129< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / 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" > 131< / span > < / div >
< div class = "line" > < a id = "l00132" name = "l00132" > < / a > < span class = "lineno" > 132< / span > < span class = "keywordtype" > bool< / span > AllVarsTakeIntegerValue(< / div >
< div class = "line" > < a id = "l00133" name = "l00133" > < / a > < span class = "lineno" > 133< / span > < span class = "keyword" > const< / span > std::vector< IntegerVariable> vars,< / div >
< div class = "line" > < a id = "l00134" name = "l00134" > < / a > < span class = "lineno" > 134< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values) {< / div >
< div class = "line" > < a id = "l00135" name = "l00135" > < / a > < span class = "lineno" > 135< / span > < span class = "keywordflow" > for< / span > (IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > : vars) {< / div >
< div class = "line" > < a id = "l00136" name = "l00136" > < / a > < span class = "lineno" > 136< / span > < span class = "keywordflow" > if< / span > (std::abs(lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] - std::round(lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ])) > 1e-6) {< / div >
< div class = "line" > < a id = "l00137" name = "l00137" > < / a > < span class = "lineno" > 137< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00138" name = "l00138" > < / a > < span class = "lineno" > 138< / span > }< / div >
< div class = "line" > < a id = "l00139" name = "l00139" > < / a > < span class = "lineno" > 139< / span > }< / div >
< div class = "line" > < a id = "l00140" name = "l00140" > < / a > < span class = "lineno" > 140< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00141" name = "l00141" > < / a > < span class = "lineno" > 141< / span > }< / div >
< div class = "line" > < a id = "l00142" name = "l00142" > < / a > < span class = "lineno" > 142< / span > < / div >
< div class = "line" > < a id = "l00143" name = "l00143" > < / a > < span class = "lineno" > 143< / span > < span class = "comment" > // Returns smallest cover size for the given constraint taking into account< / span > < / div >
< div class = "line" > < a id = "l00144" name = "l00144" > < / a > < span class = "lineno" > 144< / span > < span class = "comment" > // level zero bounds. Smallest Cover size is computed as follows.< / span > < / div >
< div class = "line" > < a id = "l00145" name = "l00145" > < / a > < span class = "lineno" > 145< / span > < span class = "comment" > // 1. Compute the upper bound if all variables are shifted to have zero lower< / span > < / div >
< div class = "line" > < a id = "l00146" name = "l00146" > < / a > < span class = "lineno" > 146< / span > < span class = "comment" > // bound.< / span > < / div >
< div class = "line" > < a id = "l00147" name = "l00147" > < / a > < span class = "lineno" > 147< / span > < span class = "comment" > // 2. Sort all terms (coefficient * shifted upper bound) in non decreasing< / span > < / div >
< div class = "line" > < a id = "l00148" name = "l00148" > < / a > < span class = "lineno" > 148< / span > < span class = "comment" > // order.< / span > < / div >
< div class = "line" > < a id = "l00149" name = "l00149" > < / a > < span class = "lineno" > 149< / span > < span class = "comment" > // 3. Add terms in cover until term sum is smaller or equal to upper bound.< / span > < / div >
< div class = "line" > < a id = "l00150" name = "l00150" > < / a > < span class = "lineno" > 150< / span > < span class = "comment" > // 4. Add the last item which violates the upper bound. This forms the smallest< / span > < / div >
< div class = "line" > < a id = "l00151" name = "l00151" > < / a > < span class = "lineno" > 151< / span > < span class = "comment" > // cover. Return the size of this cover.< / span > < / div >
< div class = "line" > < a id = "l00152" name = "l00152" > < / a > < span class = "lineno" > 152< / span > < span class = "keywordtype" > int< / span > GetSmallestCoverSize(< span class = "keyword" > const< / span > LinearConstraint& constraint,< / div >
< div class = "line" > < a id = "l00153" name = "l00153" > < / a > < span class = "lineno" > 153< / span > < span class = "keyword" > const< / span > IntegerTrail& integer_trail) {< / div >
< div class = "line" > < a id = "l00154" name = "l00154" > < / a > < span class = "lineno" > 154< / span > IntegerValue ub = constraint.ub;< / div >
< div class = "line" > < a id = "l00155" name = "l00155" > < / a > < span class = "lineno" > 155< / span > std::vector< IntegerValue> sorted_terms;< / div >
< div class = "line" > < a id = "l00156" name = "l00156" > < / a > < span class = "lineno" > 156< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < constraint.vars.size(); ++i) {< / div >
< div class = "line" > < a id = "l00157" name = "l00157" > < / a > < span class = "lineno" > 157< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = constraint.coeffs[i];< / div >
< div class = "line" > < a id = "l00158" name = "l00158" > < / a > < span class = "lineno" > 158< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.vars[i];< / div >
< div class = "line" > < a id = "l00159" name = "l00159" > < / a > < span class = "lineno" > 159< / span > < span class = "keyword" > const< / span > IntegerValue var_ub = integer_trail.LevelZeroUpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00160" name = "l00160" > < / a > < span class = "lineno" > 160< / span > < span class = "keyword" > const< / span > IntegerValue var_lb = integer_trail.LevelZeroLowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00161" name = "l00161" > < / a > < span class = "lineno" > 161< / span > ub -= var_lb * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l00162" name = "l00162" > < / a > < span class = "lineno" > 162< / span > sorted_terms.push_back(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * (var_ub - var_lb));< / div >
< div class = "line" > < a id = "l00163" name = "l00163" > < / a > < span class = "lineno" > 163< / span > }< / div >
< div class = "line" > < a id = "l00164" name = "l00164" > < / a > < span class = "lineno" > 164< / span > std::sort(sorted_terms.begin(), sorted_terms.end(),< / div >
< div class = "line" > < a id = "l00165" name = "l00165" > < / a > < span class = "lineno" > 165< / span > std::greater< IntegerValue> ());< / div >
< div class = "line" > < a id = "l00166" name = "l00166" > < / a > < span class = "lineno" > 166< / span > < span class = "keywordtype" > int< / span > smallest_cover_size = 0;< / div >
< div class = "line" > < a id = "l00167" name = "l00167" > < / a > < span class = "lineno" > 167< / span > IntegerValue sorted_term_sum = IntegerValue(0);< / div >
< div class = "line" > < a id = "l00168" name = "l00168" > < / a > < span class = "lineno" > 168< / span > < span class = "keywordflow" > while< / span > (sorted_term_sum < = ub & & < / div >
< div class = "line" > < a id = "l00169" name = "l00169" > < / a > < span class = "lineno" > 169< / span > smallest_cover_size < constraint.vars.size()) {< / div >
< div class = "line" > < a id = "l00170" name = "l00170" > < / a > < span class = "lineno" > 170< / span > sorted_term_sum += sorted_terms[smallest_cover_size++];< / div >
< div class = "line" > < a id = "l00171" name = "l00171" > < / a > < span class = "lineno" > 171< / span > }< / div >
< div class = "line" > < a id = "l00172" name = "l00172" > < / a > < span class = "lineno" > 172< / span > < span class = "keywordflow" > return< / span > smallest_cover_size;< / div >
< div class = "line" > < a id = "l00173" name = "l00173" > < / a > < span class = "lineno" > 173< / span > }< / div >
< div class = "line" > < a id = "l00174" name = "l00174" > < / a > < span class = "lineno" > 174< / span > < / div >
< div class = "line" > < a id = "l00175" name = "l00175" > < / a > < span class = "lineno" > 175< / span > < span class = "keywordtype" > bool< / span > ConstraintIsEligibleForLifting(< span class = "keyword" > const< / span > LinearConstraint& constraint,< / div >
< div class = "line" > < a id = "l00176" name = "l00176" > < / a > < span class = "lineno" > 176< / span > < span class = "keyword" > const< / span > IntegerTrail& integer_trail) {< / div >
< div class = "line" > < a id = "l00177" name = "l00177" > < / a > < span class = "lineno" > 177< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > : constraint.vars) {< / div >
< div class = "line" > < a id = "l00178" name = "l00178" > < / a > < span class = "lineno" > 178< / span > < span class = "keywordflow" > if< / span > (integer_trail.LevelZeroLowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) != IntegerValue(0) ||< / div >
< div class = "line" > < a id = "l00179" name = "l00179" > < / a > < span class = "lineno" > 179< / span > integer_trail.LevelZeroUpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) != IntegerValue(1)) {< / div >
< div class = "line" > < a id = "l00180" name = "l00180" > < / a > < span class = "lineno" > 180< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00181" name = "l00181" > < / a > < span class = "lineno" > 181< / span > }< / div >
< div class = "line" > < a id = "l00182" name = "l00182" > < / a > < span class = "lineno" > 182< / span > }< / div >
< div class = "line" > < a id = "l00183" name = "l00183" > < / a > < span class = "lineno" > 183< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / 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" > 185< / span > } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a id = "l00186" name = "l00186" > < / a > < span class = "lineno" > 186< / span > < / div >
< div class = "line" > < a id = "l00187" name = "l00187" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#accb737ae1fad15d6798a4b8bc27cea51" > 187< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#accb737ae1fad15d6798a4b8bc27cea51" > LiftKnapsackCut< / a > (< / div >
< div class = "line" > < a id = "l00188" name = "l00188" > < / a > < span class = "lineno" > 188< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & constraint,< / div >
< div class = "line" > < a id = "l00189" name = "l00189" > < / a > < span class = "lineno" > 189< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l00190" name = "l00190" > < / a > < span class = "lineno" > 190< / span > < span class = "keyword" > const< / span > std::vector< IntegerValue> & cut_vars_original_coefficients,< / div >
< div class = "line" > < a id = "l00191" name = "l00191" > < / a > < span class = "lineno" > 191< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > & integer_trail, < 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 = "l00192" name = "l00192" > < / a > < span class = "lineno" > 192< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > * cut) {< / div >
< div class = "line" > < a id = "l00193" name = "l00193" > < / a > < span class = "lineno" > 193< / span > absl::btree_set< IntegerVariable> vars_in_cut;< / div >
< div class = "line" > < a id = "l00194" name = "l00194" > < / a > < span class = "lineno" > 194< / span > < span class = "keywordflow" > for< / span > (IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > : cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > ) {< / div >
< div class = "line" > < a id = "l00195" name = "l00195" > < / a > < span class = "lineno" > 195< / span > vars_in_cut.insert(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / 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 > < / div >
< div class = "line" > < a id = "l00198" name = "l00198" > < / a > < span class = "lineno" > 198< / span > std::vector< std::pair< IntegerValue, IntegerVariable> > non_zero_vars;< / div >
< div class = "line" > < a id = "l00199" name = "l00199" > < / a > < span class = "lineno" > 199< / span > std::vector< std::pair< IntegerValue, IntegerVariable> > zero_vars;< / div >
< div class = "line" > < a id = "l00200" name = "l00200" > < / a > < span class = "lineno" > 200< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00201" name = "l00201" > < / a > < span class = "lineno" > 201< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00202" name = "l00202" > < / a > < span class = "lineno" > 202< / span > < span class = "keywordflow" > if< / span > (integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) != IntegerValue(0) ||< / div >
< div class = "line" > < a id = "l00203" name = "l00203" > < / a > < span class = "lineno" > 203< / span > integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) != IntegerValue(1)) {< / div >
< div class = "line" > < a id = "l00204" name = "l00204" > < / a > < span class = "lineno" > 204< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00205" name = "l00205" > < / a > < span class = "lineno" > 205< / span > }< / div >
< div class = "line" > < a id = "l00206" name = "l00206" > < / a > < span class = "lineno" > 206< / span > < span class = "keywordflow" > if< / span > (vars_in_cut.find(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) != vars_in_cut.end()) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00207" name = "l00207" > < / a > < span class = "lineno" > 207< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00208" name = "l00208" > < / a > < span class = "lineno" > 208< / span > < span class = "keywordflow" > if< / span > (lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] < = 1e-6) {< / div >
< div class = "line" > < a id = "l00209" name = "l00209" > < / a > < span class = "lineno" > 209< / span > zero_vars.push_back({< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > });< / div >
< div class = "line" > < a id = "l00210" name = "l00210" > < / a > < span class = "lineno" > 210< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00211" name = "l00211" > < / a > < span class = "lineno" > 211< / span > non_zero_vars.push_back({< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > });< / div >
< div class = "line" > < a id = "l00212" name = "l00212" > < / a > < span class = "lineno" > 212< / span > }< / div >
< div class = "line" > < a id = "l00213" name = "l00213" > < / a > < span class = "lineno" > 213< / span > }< / div >
< 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 > < span class = "comment" > // Decide lifting sequence (nonzeros, zeros in nonincreasing order< / span > < / div >
< div class = "line" > < a id = "l00216" name = "l00216" > < / a > < span class = "lineno" > 216< / span > < span class = "comment" > // of coefficient ).< / span > < / div >
< div class = "line" > < a id = "l00217" name = "l00217" > < / a > < span class = "lineno" > 217< / span > std::sort(non_zero_vars.rbegin(), non_zero_vars.rend());< / div >
< div class = "line" > < a id = "l00218" name = "l00218" > < / a > < span class = "lineno" > 218< / span > std::sort(zero_vars.rbegin(), zero_vars.rend());< / div >
< div class = "line" > < a id = "l00219" name = "l00219" > < / a > < span class = "lineno" > 219< / span > < / div >
< div class = "line" > < a id = "l00220" name = "l00220" > < / a > < span class = "lineno" > 220< / span > std::vector< std::pair< IntegerValue, IntegerVariable> > lifting_sequence(< / div >
< div class = "line" > < a id = "l00221" name = "l00221" > < / a > < span class = "lineno" > 221< / span > std::move(non_zero_vars));< / div >
< div class = "line" > < a id = "l00222" name = "l00222" > < / a > < span class = "lineno" > 222< / span > < / div >
< div class = "line" > < a id = "l00223" name = "l00223" > < / a > < span class = "lineno" > 223< / span > lifting_sequence.insert(lifting_sequence.end(), zero_vars.begin(),< / div >
< div class = "line" > < a id = "l00224" name = "l00224" > < / a > < span class = "lineno" > 224< / span > zero_vars.end());< / 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 > < span class = "comment" > // Form Knapsack.< / span > < / div >
< div class = "line" > < a id = "l00227" name = "l00227" > < / a > < span class = "lineno" > 227< / span > std::vector< double> lifting_profits;< / div >
< div class = "line" > < a id = "l00228" name = "l00228" > < / a > < span class = "lineno" > 228< / span > std::vector< double> lifting_weights;< / div >
< div class = "line" > < a id = "l00229" name = "l00229" > < / a > < span class = "lineno" > 229< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00230" name = "l00230" > < / a > < span class = "lineno" > 230< / span > lifting_profits.push_back(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i]));< / div >
< div class = "line" > < a id = "l00231" name = "l00231" > < / a > < span class = "lineno" > 231< / span > lifting_weights.push_back(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (cut_vars_original_coefficients[i]));< / div >
< div class = "line" > < a id = "l00232" name = "l00232" > < / a > < span class = "lineno" > 232< / span > }< / 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 > < span class = "comment" > // Lift the cut.< / span > < / div >
< div class = "line" > < a id = "l00235" name = "l00235" > < / a > < span class = "lineno" > 235< / span > < span class = "keywordtype" > bool< / span > is_lifted = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00236" name = "l00236" > < / a > < span class = "lineno" > 236< / span > < span class = "keywordtype" > bool< / span > is_solution_optimal = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00237" name = "l00237" > < / a > < span class = "lineno" > 237< / span > < a class = "code hl_class" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html" > KnapsackSolverForCuts< / a > knapsack_solver(< span class = "stringliteral" > " Knapsack cut lifter" < / span > );< / div >
< div class = "line" > < a id = "l00238" name = "l00238" > < / a > < span class = "lineno" > 238< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > entry : lifting_sequence) {< / div >
< div class = "line" > < a id = "l00239" name = "l00239" > < / a > < span class = "lineno" > 239< / span > is_solution_optimal = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00240" name = "l00240" > < / a > < span class = "lineno" > 240< / span > < span class = "keyword" > const< / span > IntegerValue var_original_coeff = entry.first;< / div >
< div class = "line" > < a id = "l00241" name = "l00241" > < / a > < span class = "lineno" > 241< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = entry.second;< / div >
< div class = "line" > < a id = "l00242" name = "l00242" > < / a > < span class = "lineno" > 242< / span > < span class = "keyword" > const< / span > IntegerValue lifting_capacity = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > - entry.first;< / div >
< div class = "line" > < a id = "l00243" name = "l00243" > < / a > < span class = "lineno" > 243< / span > < span class = "keywordflow" > if< / span > (lifting_capacity < = IntegerValue(0)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00244" name = "l00244" > < / a > < span class = "lineno" > 244< / span > knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#a902b91803b24fe467929767c65b6ee4f" > Init< / a > (lifting_profits, lifting_weights,< / div >
< div class = "line" > < a id = "l00245" name = "l00245" > < / a > < span class = "lineno" > 245< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (lifting_capacity));< / div >
< div class = "line" > < a id = "l00246" name = "l00246" > < / a > < span class = "lineno" > 246< / span > knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#a4bcd14198cbb6f2c3bea61c85015e07a" > set_node_limit< / a > (100);< / div >
< div class = "line" > < a id = "l00247" name = "l00247" > < / a > < span class = "lineno" > 247< / span > < span class = "comment" > // NOTE: Since all profits and weights are integer, solution of< / span > < / div >
< div class = "line" > < a id = "l00248" name = "l00248" > < / a > < span class = "lineno" > 248< / span > < span class = "comment" > // knapsack is also integer.< / span > < / div >
< div class = "line" > < a id = "l00249" name = "l00249" > < / a > < span class = "lineno" > 249< / span > < span class = "comment" > // TODO(user): Use an integer solver or heuristic.< / span > < / div >
< div class = "line" > < a id = "l00250" name = "l00250" > < / a > < span class = "lineno" > 250< / span > knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#aab4a9c689632460b6b96f3d4bf22f86e" > Solve< / a > (< a class = "code hl_variable" href = "cp__model__solver_8cc.html#aec8af5c1be4e1b6d4330e1161028de21" > time_limit< / a > , & is_solution_optimal);< / div >
< div class = "line" > < a id = "l00251" name = "l00251" > < / a > < span class = "lineno" > 251< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > knapsack_upper_bound =< / div >
< div class = "line" > < a id = "l00252" name = "l00252" > < / a > < span class = "lineno" > 252< / span > std::round(knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#afa66a5ae5f09a131d7fdb338b8a212ba" > GetUpperBound< / a > ());< / div >
< div class = "line" > < a id = "l00253" name = "l00253" > < / a > < span class = "lineno" > 253< / span > < span class = "keyword" > const< / span > IntegerValue cut_coeff =< / div >
< div class = "line" > < a id = "l00254" name = "l00254" > < / a > < span class = "lineno" > 254< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > - < span class = "keyword" > static_cast< < / span > int64_t< span class = "keyword" > > < / span > (knapsack_upper_bound);< / div >
< div class = "line" > < a id = "l00255" name = "l00255" > < / a > < span class = "lineno" > 255< / span > < span class = "keywordflow" > if< / span > (cut_coeff > IntegerValue(0)) {< / div >
< div class = "line" > < a id = "l00256" name = "l00256" > < / a > < span class = "lineno" > 256< / span > is_lifted = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00257" name = "l00257" > < / a > < span class = "lineno" > 257< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00258" name = "l00258" > < / a > < span class = "lineno" > 258< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > .push_back(cut_coeff);< / div >
< div class = "line" > < a id = "l00259" name = "l00259" > < / a > < span class = "lineno" > 259< / span > lifting_profits.push_back(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (cut_coeff));< / div >
< div class = "line" > < a id = "l00260" name = "l00260" > < / a > < span class = "lineno" > 260< / span > lifting_weights.push_back(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (var_original_coeff));< / 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 > is_lifted;< / 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" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a1de556a1559f25bd0819655d375f6c8e" > 266< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1de556a1559f25bd0819655d375f6c8e" > GetPreprocessedLinearConstraint< / a > (< / div >
< div class = "line" > < a id = "l00267" name = "l00267" > < / a > < span class = "lineno" > 267< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & constraint,< / div >
< div class = "line" > < a id = "l00268" name = "l00268" > < / a > < span class = "lineno" > 268< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l00269" name = "l00269" > < / a > < span class = "lineno" > 269< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > & integer_trail) {< / div >
< div class = "line" > < a id = "l00270" name = "l00270" > < / a > < span class = "lineno" > 270< / span > IntegerValue ub = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ;< / div >
< div class = "line" > < a id = "l00271" name = "l00271" > < / a > < span class = "lineno" > 271< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > constraint_with_left_vars;< / div >
< div class = "line" > < a id = "l00272" name = "l00272" > < / a > < span class = "lineno" > 272< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00273" name = "l00273" > < / a > < span class = "lineno" > 273< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00274" name = "l00274" > < / a > < span class = "lineno" > 274< / span > < span class = "keyword" > const< / span > IntegerValue var_ub = integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00275" name = "l00275" > < / a > < span class = "lineno" > 275< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00276" name = "l00276" > < / a > < span class = "lineno" > 276< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (var_ub) - lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] < = 1.0 - kMinCutViolation) {< / div >
< div class = "line" > < a id = "l00277" name = "l00277" > < / a > < span class = "lineno" > 277< / span > constraint_with_left_vars.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00278" name = "l00278" > < / a > < span class = "lineno" > 278< / span > constraint_with_left_vars.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > .push_back(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l00279" name = "l00279" > < / a > < span class = "lineno" > 279< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00280" name = "l00280" > < / a > < span class = "lineno" > 280< / span > < span class = "comment" > // Variable not in cut< / span > < / div >
< div class = "line" > < a id = "l00281" name = "l00281" > < / a > < span class = "lineno" > 281< / span > < span class = "keyword" > const< / span > IntegerValue var_lb = integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00282" name = "l00282" > < / a > < span class = "lineno" > 282< / span > ub -= < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * var_lb;< / div >
< div class = "line" > < a id = "l00283" name = "l00283" > < / a > < span class = "lineno" > 283< / span > }< / div >
< div class = "line" > < a id = "l00284" name = "l00284" > < / a > < span class = "lineno" > 284< / span > }< / div >
< div class = "line" > < a id = "l00285" name = "l00285" > < / a > < span class = "lineno" > 285< / span > constraint_with_left_vars.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = ub;< / div >
< div class = "line" > < a id = "l00286" name = "l00286" > < / a > < span class = "lineno" > 286< / span > constraint_with_left_vars.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > ;< / div >
< div class = "line" > < a id = "l00287" name = "l00287" > < / a > < span class = "lineno" > 287< / span > < span class = "keywordflow" > return< / span > constraint_with_left_vars;< / div >
< div class = "line" > < a id = "l00288" name = "l00288" > < / a > < span class = "lineno" > 288< / span > }< / 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" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#ac8b530afe36cf1521c919ca43429926d" > 290< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ac8b530afe36cf1521c919ca43429926d" > ConstraintIsTriviallyTrue< / a > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & constraint,< / div >
< div class = "line" > < a id = "l00291" name = "l00291" > < / a > < span class = "lineno" > 291< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > & integer_trail) {< / div >
< div class = "line" > < a id = "l00292" name = "l00292" > < / a > < span class = "lineno" > 292< / span > IntegerValue term_sum = IntegerValue(0);< / div >
< div class = "line" > < a id = "l00293" name = "l00293" > < / a > < span class = "lineno" > 293< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00294" name = "l00294" > < / a > < span class = "lineno" > 294< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00295" name = "l00295" > < / a > < span class = "lineno" > 295< / span > < span class = "keyword" > const< / span > IntegerValue var_ub = integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00296" name = "l00296" > < / a > < span class = "lineno" > 296< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00297" name = "l00297" > < / a > < span class = "lineno" > 297< / span > term_sum += < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * var_ub;< / div >
< div class = "line" > < a id = "l00298" name = "l00298" > < / a > < span class = "lineno" > 298< / span > }< / div >
< div class = "line" > < a id = "l00299" name = "l00299" > < / a > < span class = "lineno" > 299< / span > < span class = "keywordflow" > if< / span > (term_sum < = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ) {< / div >
< div class = "line" > < a id = "l00300" name = "l00300" > < / a > < span class = "lineno" > 300< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Filtered by cover filter" < / span > ;< / div >
< div class = "line" > < a id = "l00301" name = "l00301" > < / a > < span class = "lineno" > 301< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00302" name = "l00302" > < / a > < span class = "lineno" > 302< / span > }< / div >
< div class = "line" > < a id = "l00303" name = "l00303" > < / a > < span class = "lineno" > 303< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00304" name = "l00304" > < / a > < span class = "lineno" > 304< / 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" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a588b516182cd6d5d8c048dfd76bc5523" > 306< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a588b516182cd6d5d8c048dfd76bc5523" > CanBeFilteredUsingCutLowerBound< / a > (< / div >
< div class = "line" > < a id = "l00307" name = "l00307" > < / a > < span class = "lineno" > 307< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & preprocessed_constraint,< / div >
< div class = "line" > < a id = "l00308" name = "l00308" > < / a > < span class = "lineno" > 308< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l00309" name = "l00309" > < / a > < span class = "lineno" > 309< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > & integer_trail) {< / div >
< div class = "line" > < a id = "l00310" name = "l00310" > < / a > < span class = "lineno" > 310< / span > std::vector< double> variable_upper_bound_distances;< / div >
< div class = "line" > < a id = "l00311" name = "l00311" > < / a > < span class = "lineno" > 311< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > : preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > ) {< / div >
< div class = "line" > < a id = "l00312" name = "l00312" > < / a > < span class = "lineno" > 312< / span > < span class = "keyword" > const< / span > IntegerValue var_ub = integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00313" name = "l00313" > < / a > < span class = "lineno" > 313< / span > variable_upper_bound_distances.push_back(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (var_ub) - lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ]);< / div >
< div class = "line" > < a id = "l00314" name = "l00314" > < / a > < span class = "lineno" > 314< / span > }< / div >
< div class = "line" > < a id = "l00315" name = "l00315" > < / a > < span class = "lineno" > 315< / span > < span class = "comment" > // Compute the min cover size.< / span > < / div >
< div class = "line" > < a id = "l00316" name = "l00316" > < / a > < span class = "lineno" > 316< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > smallest_cover_size =< / div >
< div class = "line" > < a id = "l00317" name = "l00317" > < / a > < span class = "lineno" > 317< / span > GetSmallestCoverSize(preprocessed_constraint, integer_trail);< / div >
< div class = "line" > < a id = "l00318" name = "l00318" > < / a > < span class = "lineno" > 318< / span > < / div >
< div class = "line" > < a id = "l00319" name = "l00319" > < / a > < span class = "lineno" > 319< / span > std::nth_element(< / div >
< div class = "line" > < a id = "l00320" name = "l00320" > < / a > < span class = "lineno" > 320< / span > variable_upper_bound_distances.begin(),< / div >
< div class = "line" > < a id = "l00321" name = "l00321" > < / a > < span class = "lineno" > 321< / span > variable_upper_bound_distances.begin() + smallest_cover_size - 1,< / div >
< div class = "line" > < a id = "l00322" name = "l00322" > < / a > < span class = "lineno" > 322< / span > variable_upper_bound_distances.end());< / div >
< div class = "line" > < a id = "l00323" name = "l00323" > < / a > < span class = "lineno" > 323< / span > < span class = "keywordtype" > double< / span > cut_lower_bound = 0.0;< / div >
< div class = "line" > < a id = "l00324" name = "l00324" > < / a > < span class = "lineno" > 324< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < smallest_cover_size; ++i) {< / div >
< div class = "line" > < a id = "l00325" name = "l00325" > < / a > < span class = "lineno" > 325< / span > cut_lower_bound += variable_upper_bound_distances[i];< / 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 > < span class = "keywordflow" > if< / span > (cut_lower_bound > = 1.0 - kMinCutViolation) {< / div >
< div class = "line" > < a id = "l00328" name = "l00328" > < / a > < span class = "lineno" > 328< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Filtered by kappa heuristic" < / span > ;< / div >
< div class = "line" > < a id = "l00329" name = "l00329" > < / a > < span class = "lineno" > 329< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00330" name = "l00330" > < / a > < span class = "lineno" > 330< / span > }< / div >
< div class = "line" > < a id = "l00331" name = "l00331" > < / a > < span class = "lineno" > 331< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00332" name = "l00332" > < / a > < span class = "lineno" > 332< / span > }< / div >
< div class = "line" > < a id = "l00333" name = "l00333" > < / a > < span class = "lineno" > 333< / span > < / div >
< div class = "line" > < a id = "l00334" name = "l00334" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a457076abfb3071fca80b8175363e3dfa" > 334< / a > < / span > < span class = "keywordtype" > double< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a457076abfb3071fca80b8175363e3dfa" > GetKnapsackUpperBound< / a > (std::vector< KnapsackItem> items,< / div >
< div class = "line" > < a id = "l00335" name = "l00335" > < / a > < span class = "lineno" > 335< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > ) {< / div >
< div class = "line" > < a id = "l00336" name = "l00336" > < / a > < span class = "lineno" > 336< / span > < span class = "comment" > // Sort items by value by weight ratio.< / span > < / div >
< div class = "line" > < a id = "l00337" name = "l00337" > < / a > < span class = "lineno" > 337< / span > std::sort(items.begin(), items.end(), std::greater< KnapsackItem> ());< / div >
< div class = "line" > < a id = "l00338" name = "l00338" > < / a > < span class = "lineno" > 338< / span > < span class = "keywordtype" > double< / span > left_capacity = < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > ;< / div >
< div class = "line" > < a id = "l00339" name = "l00339" > < / a > < span class = "lineno" > 339< / span > < span class = "keywordtype" > double< / span > profit = 0.0;< / div >
< div class = "line" > < a id = "l00340" name = "l00340" > < / a > < span class = "lineno" > 340< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_knapsack_item.html" > KnapsackItem< / a > item : items) {< / div >
< div class = "line" > < a id = "l00341" name = "l00341" > < / a > < span class = "lineno" > 341< / span > < span class = "keywordflow" > if< / span > (item.weight < = left_capacity) {< / div >
< div class = "line" > < a id = "l00342" name = "l00342" > < / a > < span class = "lineno" > 342< / span > profit += item.profit;< / div >
< div class = "line" > < a id = "l00343" name = "l00343" > < / a > < span class = "lineno" > 343< / span > left_capacity -= item.weight;< / div >
< div class = "line" > < a id = "l00344" name = "l00344" > < / a > < span class = "lineno" > 344< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00345" name = "l00345" > < / a > < span class = "lineno" > 345< / span > profit += (left_capacity / item.weight) * item.profit;< / div >
< div class = "line" > < a id = "l00346" name = "l00346" > < / a > < span class = "lineno" > 346< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00347" name = "l00347" > < / a > < span class = "lineno" > 347< / span > }< / div >
< div class = "line" > < a id = "l00348" name = "l00348" > < / a > < span class = "lineno" > 348< / span > }< / div >
< div class = "line" > < a id = "l00349" name = "l00349" > < / a > < span class = "lineno" > 349< / span > < span class = "keywordflow" > return< / span > profit;< / div >
< div class = "line" > < a id = "l00350" name = "l00350" > < / a > < span class = "lineno" > 350< / span > }< / div >
< div class = "line" > < a id = "l00351" name = "l00351" > < / a > < span class = "lineno" > 351< / span > < / div >
< div class = "line" > < a id = "l00352" name = "l00352" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a8c8db245a613f2fb46d917cd78100f83" > 352< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8c8db245a613f2fb46d917cd78100f83" > CanBeFilteredUsingKnapsackUpperBound< / a > (< / div >
< div class = "line" > < a id = "l00353" name = "l00353" > < / a > < span class = "lineno" > 353< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & constraint,< / div >
< div class = "line" > < a id = "l00354" name = "l00354" > < / a > < span class = "lineno" > 354< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l00355" name = "l00355" > < / a > < span class = "lineno" > 355< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > & integer_trail) {< / div >
< div class = "line" > < a id = "l00356" name = "l00356" > < / a > < span class = "lineno" > 356< / span > std::vector< KnapsackItem> items;< / div >
< div class = "line" > < a id = "l00357" name = "l00357" > < / a > < span class = "lineno" > 357< / span > < span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > = -< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ) - 1.0;< / div >
< div class = "line" > < a id = "l00358" name = "l00358" > < / a > < span class = "lineno" > 358< / span > < span class = "keywordtype" > double< / span > sum_variable_profit = 0;< / div >
< div class = "line" > < a id = "l00359" name = "l00359" > < / a > < span class = "lineno" > 359< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00360" name = "l00360" > < / a > < span class = "lineno" > 360< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00361" name = "l00361" > < / a > < span class = "lineno" > 361< / span > < span class = "keyword" > const< / span > IntegerValue var_ub = integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00362" name = "l00362" > < / a > < span class = "lineno" > 362< / span > < span class = "keyword" > const< / span > IntegerValue var_lb = integer_trail.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00363" name = "l00363" > < / a > < span class = "lineno" > 363< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00364" name = "l00364" > < / a > < span class = "lineno" > 364< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_knapsack_item.html" > KnapsackItem< / a > item;< / div >
< div class = "line" > < a id = "l00365" name = "l00365" > < / a > < span class = "lineno" > 365< / span > item.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_knapsack_item.html#a3ff84545f00a56ba7584b2a7f2cef69c" > profit< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (var_ub) - lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ];< / div >
< div class = "line" > < a id = "l00366" name = "l00366" > < / a > < span class = "lineno" > 366< / span > item.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_knapsack_item.html#a99108733d00274978a4979dc072bd513" > weight< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * (var_ub - var_lb));< / div >
< div class = "line" > < a id = "l00367" name = "l00367" > < / a > < span class = "lineno" > 367< / span > items.push_back(item);< / div >
< div class = "line" > < a id = "l00368" name = "l00368" > < / a > < span class = "lineno" > 368< / span > < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > += < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * var_ub);< / div >
< div class = "line" > < a id = "l00369" name = "l00369" > < / a > < span class = "lineno" > 369< / span > sum_variable_profit += item.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_knapsack_item.html#a3ff84545f00a56ba7584b2a7f2cef69c" > profit< / a > ;< / div >
< div class = "line" > < a id = "l00370" name = "l00370" > < / a > < span class = "lineno" > 370< / span > }< / div >
< div class = "line" > < a id = "l00371" name = "l00371" > < / a > < span class = "lineno" > 371< / span > < / div >
< div class = "line" > < a id = "l00372" name = "l00372" > < / a > < span class = "lineno" > 372< / span > < span class = "comment" > // Return early if the required upper bound is negative since all the profits< / span > < / div >
< div class = "line" > < a id = "l00373" name = "l00373" > < / a > < span class = "lineno" > 373< / span > < span class = "comment" > // are non negative.< / span > < / div >
< div class = "line" > < a id = "l00374" name = "l00374" > < / a > < span class = "lineno" > 374< / span > < span class = "keywordflow" > if< / span > (sum_variable_profit - 1.0 + kMinCutViolation < 0.0) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00375" name = "l00375" > < / a > < span class = "lineno" > 375< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00376" name = "l00376" > < / a > < span class = "lineno" > 376< / span > < span class = "comment" > // Get the knapsack upper bound.< / span > < / div >
< div class = "line" > < a id = "l00377" name = "l00377" > < / a > < span class = "lineno" > 377< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > knapsack_upper_bound =< / div >
< div class = "line" > < a id = "l00378" name = "l00378" > < / a > < span class = "lineno" > 378< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a457076abfb3071fca80b8175363e3dfa" > GetKnapsackUpperBound< / a > (std::move(items), < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > );< / div >
< div class = "line" > < a id = "l00379" name = "l00379" > < / a > < span class = "lineno" > 379< / span > < span class = "keywordflow" > if< / span > (knapsack_upper_bound < sum_variable_profit - 1.0 + kMinCutViolation) {< / div >
< div class = "line" > < a id = "l00380" name = "l00380" > < / a > < span class = "lineno" > 380< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Filtered by knapsack upper bound" < / span > ;< / div >
< div class = "line" > < a id = "l00381" name = "l00381" > < / a > < span class = "lineno" > 381< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00382" name = "l00382" > < / a > < span class = "lineno" > 382< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00383" name = "l00383" > < / a > < span class = "lineno" > 383< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00384" name = "l00384" > < / a > < span class = "lineno" > 384< / span > }< / div >
< div class = "line" > < a id = "l00385" name = "l00385" > < / a > < span class = "lineno" > 385< / span > < / div >
< div class = "line" > < a id = "l00386" name = "l00386" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a32f0016572d69bfcd1f3af811b2043ad" > 386< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a32f0016572d69bfcd1f3af811b2043ad" > CanFormValidKnapsackCover< / a > (< / div >
< div class = "line" > < a id = "l00387" name = "l00387" > < / a > < span class = "lineno" > 387< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & preprocessed_constraint,< / div >
< div class = "line" > < a id = "l00388" name = "l00388" > < / a > < span class = "lineno" > 388< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l00389" name = "l00389" > < / a > < span class = "lineno" > 389< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > & integer_trail) {< / div >
< div class = "line" > < a id = "l00390" name = "l00390" > < / a > < span class = "lineno" > 390< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ac8b530afe36cf1521c919ca43429926d" > ConstraintIsTriviallyTrue< / a > (preprocessed_constraint, integer_trail)) {< / div >
< div class = "line" > < a id = "l00391" name = "l00391" > < / a > < span class = "lineno" > 391< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00392" name = "l00392" > < / a > < span class = "lineno" > 392< / span > }< / div >
< div class = "line" > < a id = "l00393" name = "l00393" > < / a > < span class = "lineno" > 393< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a588b516182cd6d5d8c048dfd76bc5523" > CanBeFilteredUsingCutLowerBound< / a > (preprocessed_constraint, lp_values,< / div >
< div class = "line" > < a id = "l00394" name = "l00394" > < / a > < span class = "lineno" > 394< / span > integer_trail)) {< / div >
< div class = "line" > < a id = "l00395" name = "l00395" > < / a > < span class = "lineno" > 395< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00396" name = "l00396" > < / a > < span class = "lineno" > 396< / span > }< / div >
< div class = "line" > < a id = "l00397" name = "l00397" > < / a > < span class = "lineno" > 397< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8c8db245a613f2fb46d917cd78100f83" > CanBeFilteredUsingKnapsackUpperBound< / a > (preprocessed_constraint, lp_values,< / div >
< div class = "line" > < a id = "l00398" name = "l00398" > < / a > < span class = "lineno" > 398< / span > integer_trail)) {< / div >
< div class = "line" > < a id = "l00399" name = "l00399" > < / a > < span class = "lineno" > 399< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00400" name = "l00400" > < / a > < span class = "lineno" > 400< / span > }< / div >
< div class = "line" > < a id = "l00401" name = "l00401" > < / a > < span class = "lineno" > 401< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / 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 > < / div >
< div class = "line" > < a id = "l00404" name = "l00404" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a06e2118f6735d033f7f43a939abe558d" > 404< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a06e2118f6735d033f7f43a939abe558d" > ConvertToKnapsackForm< / a > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & constraint,< / div >
< div class = "line" > < a id = "l00405" name = "l00405" > < / a > < span class = "lineno" > 405< / span > std::vector< LinearConstraint> * knapsack_constraints,< / div >
< div class = "line" > < a id = "l00406" name = "l00406" > < / a > < span class = "lineno" > 406< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > * integer_trail) {< / div >
< div class = "line" > < a id = "l00407" name = "l00407" > < / a > < span class = "lineno" > 407< / span > < span class = "comment" > // If all coefficient are the same, the generated knapsack cuts cannot be< / span > < / div >
< div class = "line" > < a id = "l00408" name = "l00408" > < / a > < span class = "lineno" > 408< / span > < span class = "comment" > // stronger than the constraint itself. However, when we substitute variables< / span > < / div >
< div class = "line" > < a id = "l00409" name = "l00409" > < / a > < span class = "lineno" > 409< / span > < span class = "comment" > // using the implication graph, this is not longer true. So we only skip< / span > < / div >
< div class = "line" > < a id = "l00410" name = "l00410" > < / a > < span class = "lineno" > 410< / span > < span class = "comment" > // constraints with same coeff and no substitutions.< / span > < / div >
< div class = "line" > < a id = "l00411" name = "l00411" > < / a > < span class = "lineno" > 411< / span > < span class = "keywordflow" > if< / span > (SmallRangeAndAllCoefficientsMagnitudeAreTheSame(constraint,< / div >
< div class = "line" > < a id = "l00412" name = "l00412" > < / a > < span class = "lineno" > 412< / span > integer_trail)) {< / div >
< div class = "line" > < a id = "l00413" name = "l00413" > < / a > < span class = "lineno" > 413< / span > < span class = "keywordflow" > return< / span > ;< / 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 > < span class = "keywordflow" > if< / span > (constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > < < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > kMaxIntegerValue< / a > ) {< / div >
< div class = "line" > < a id = "l00416" name = "l00416" > < / a > < span class = "lineno" > 416< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > canonical_knapsack_form;< / 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" > // Negate the variables with negative coefficients.< / span > < / div >
< div class = "line" > < a id = "l00419" name = "l00419" > < / a > < span class = "lineno" > 419< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00420" name = "l00420" > < / a > < span class = "lineno" > 420< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00421" name = "l00421" > < / a > < span class = "lineno" > 421< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00422" name = "l00422" > < / a > < span class = "lineno" > 422< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > > IntegerValue(0)) {< / div >
< div class = "line" > < a id = "l00423" name = "l00423" > < / a > < span class = "lineno" > 423< / span > canonical_knapsack_form.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l00424" name = "l00424" > < / a > < span class = "lineno" > 424< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00425" name = "l00425" > < / a > < span class = "lineno" > 425< / span > canonical_knapsack_form.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22" > NegationOf< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ), -< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / 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 > }< / div >
< div class = "line" > < a id = "l00428" name = "l00428" > < / a > < span class = "lineno" > 428< / span > canonical_knapsack_form.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ;< / div >
< div class = "line" > < a id = "l00429" name = "l00429" > < / a > < span class = "lineno" > 429< / span > canonical_knapsack_form.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ;< / div >
< div class = "line" > < a id = "l00430" name = "l00430" > < / a > < span class = "lineno" > 430< / span > knapsack_constraints-> push_back(canonical_knapsack_form);< / div >
< div class = "line" > < a id = "l00431" name = "l00431" > < / a > < span class = "lineno" > 431< / span > }< / div >
< div class = "line" > < a id = "l00432" name = "l00432" > < / a > < span class = "lineno" > 432< / span > < / div >
< div class = "line" > < a id = "l00433" name = "l00433" > < / a > < span class = "lineno" > 433< / span > < span class = "keywordflow" > if< / span > (constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ) {< / div >
< div class = "line" > < a id = "l00434" name = "l00434" > < / a > < span class = "lineno" > 434< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > canonical_knapsack_form;< / 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 > < span class = "comment" > // Negate the variables with positive coefficients.< / span > < / div >
< div class = "line" > < a id = "l00437" name = "l00437" > < / a > < span class = "lineno" > 437< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00438" name = "l00438" > < / a > < span class = "lineno" > 438< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00439" name = "l00439" > < / a > < span class = "lineno" > 439< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00440" name = "l00440" > < / a > < span class = "lineno" > 440< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > > IntegerValue(0)) {< / div >
< div class = "line" > < a id = "l00441" name = "l00441" > < / a > < span class = "lineno" > 441< / span > canonical_knapsack_form.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22" > NegationOf< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ), < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l00442" name = "l00442" > < / a > < span class = "lineno" > 442< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00443" name = "l00443" > < / a > < span class = "lineno" > 443< / span > canonical_knapsack_form.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , -< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / 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" > 445< / span > }< / div >
< div class = "line" > < a id = "l00446" name = "l00446" > < / a > < span class = "lineno" > 446< / span > canonical_knapsack_form.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = -constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > ;< / div >
< div class = "line" > < a id = "l00447" name = "l00447" > < / a > < span class = "lineno" > 447< / span > canonical_knapsack_form.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ;< / div >
< div class = "line" > < a id = "l00448" name = "l00448" > < / a > < span class = "lineno" > 448< / span > knapsack_constraints-> push_back(canonical_knapsack_form);< / div >
< div class = "line" > < a id = "l00449" name = "l00449" > < / a > < span class = "lineno" > 449< / span > }< / div >
< div class = "line" > < a id = "l00450" name = "l00450" > < / a > < span class = "lineno" > 450< / span > }< / div >
< div class = "line" > < a id = "l00451" name = "l00451" > < / a > < span class = "lineno" > 451< / span > < / div >
< div class = "line" > < a id = "l00452" name = "l00452" > < / a > < span class = "lineno" > 452< / span > < span class = "comment" > // TODO(user): This is no longer used as we try to separate all cut with< / span > < / div >
< div class = "line" > < a id = "l00453" name = "l00453" > < / a > < span class = "lineno" > 453< / span > < span class = "comment" > // knapsack now, remove.< / span > < / div >
< div class = "line" > < a id = "l00454" name = "l00454" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#ac158f737c8653b1fc1bd294ea2d3412d" > 454< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ac158f737c8653b1fc1bd294ea2d3412d" > CreateKnapsackCoverCutGenerator< / a > (< / div >
< div class = "line" > < a id = "l00455" name = "l00455" > < / a > < span class = "lineno" > 455< / span > < span class = "keyword" > const< / span > std::vector< LinearConstraint> & base_constraints,< / div >
< div class = "line" > < a id = "l00456" name = "l00456" > < / a > < span class = "lineno" > 456< / span > < span class = "keyword" > const< / span > std::vector< IntegerVariable> & vars, < 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 = "l00457" name = "l00457" > < / a > < span class = "lineno" > 457< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > result;< / div >
< div class = "line" > < a id = "l00458" name = "l00458" > < / a > < span class = "lineno" > 458< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > = vars;< / div >
< div class = "line" > < a id = "l00459" name = "l00459" > < / a > < span class = "lineno" > 459< / span > < / div >
< div class = "line" > < a id = "l00460" name = "l00460" > < / a > < span class = "lineno" > 460< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > * integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l00461" name = "l00461" > < / a > < span class = "lineno" > 461< / span > std::vector< LinearConstraint> knapsack_constraints;< / div >
< div class = "line" > < a id = "l00462" name = "l00462" > < / a > < span class = "lineno" > 462< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & constraint : base_constraints) {< / div >
< div class = "line" > < a id = "l00463" name = "l00463" > < / a > < span class = "lineno" > 463< / span > < span class = "comment" > // There is often a lot of small linear base constraints and it doesn' t seem< / span > < / div >
< div class = "line" > < a id = "l00464" name = "l00464" > < / a > < span class = "lineno" > 464< / span > < span class = "comment" > // super useful to generate cuts for constraints of size 2. Any valid cut< / span > < / div >
< div class = "line" > < a id = "l00465" name = "l00465" > < / a > < span class = "lineno" > 465< / span > < span class = "comment" > // of size 1 should be already infered by the propagation.< / span > < / div >
< div class = "line" > < a id = "l00466" name = "l00466" > < / a > < span class = "lineno" > 466< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00467" name = "l00467" > < / a > < span class = "lineno" > 467< / span > < span class = "comment" > // TODO(user): The case of size 2 is a bit less clear. investigate more if< / span > < / div >
< div class = "line" > < a id = "l00468" name = "l00468" > < / a > < span class = "lineno" > 468< / span > < span class = "comment" > // it is useful.< / span > < / div >
< div class = "line" > < a id = "l00469" name = "l00469" > < / a > < span class = "lineno" > 469< / span > < span class = "keywordflow" > if< / span > (constraint.vars.size() < = 2) < span class = "keywordflow" > continue< / span > ;< / 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 > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a06e2118f6735d033f7f43a939abe558d" > ConvertToKnapsackForm< / a > (constraint, & knapsack_constraints, integer_trail);< / 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 > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < < span class = "stringliteral" > " #knapsack constraints: " < / span > < < knapsack_constraints.size();< / div >
< div class = "line" > < a id = "l00474" name = "l00474" > < / a > < span class = "lineno" > 474< / span > < / div >
< div class = "line" > < a id = "l00475" name = "l00475" > < / a > < span class = "lineno" > 475< / span > < span class = "comment" > // Note(user): for Knapsack cuts, it seems always advantageous to replace a< / span > < / div >
< div class = "line" > < a id = "l00476" name = "l00476" > < / a > < span class = "lineno" > 476< / span > < span class = "comment" > // variable X by a TIGHT lower bound of the form " coeff * binary + lb" . This< / span > < / div >
< div class = "line" > < a id = "l00477" name = "l00477" > < / a > < span class = "lineno" > 477< / span > < span class = "comment" > // will not change " covers" but can only result in more violation by the< / span > < / div >
< div class = "line" > < a id = "l00478" name = "l00478" > < / a > < span class = "lineno" > 478< / span > < span class = "comment" > // current LP solution.< / span > < / div >
< div class = "line" > < a id = "l00479" name = "l00479" > < / a > < span class = "lineno" > 479< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html" > ImpliedBoundsProcessor< / a > implied_bounds_processor(< / div >
< div class = "line" > < a id = "l00480" name = "l00480" > < / a > < span class = "lineno" > 480< / span > vars, integer_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_implied_bounds.html" > ImpliedBounds< / a > > ());< / 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 = "comment" > // TODO(user): do not add generator if there are no knapsack constraints.< / span > < / div >
< div class = "line" > < a id = "l00483" name = "l00483" > < / a > < span class = "lineno" > 483< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > generate_cuts< / a > = [implied_bounds_processor, knapsack_constraints, vars,< / div >
< div class = "line" > < a id = "l00484" name = "l00484" > < / a > < span class = "lineno" > 484< / span > < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , integer_trail](< / div >
< div class = "line" > < a id = "l00485" name = "l00485" > < / a > < span class = "lineno" > 485< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & < / div >
< div class = "line" > < a id = "l00486" name = "l00486" > < / a > < span class = "lineno" > 486< / span > lp_values,< / div >
< div class = "line" > < a id = "l00487" name = "l00487" > < / a > < span class = "lineno" > 487< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > LinearConstraintManager< / a > * manager) < span class = "keyword" > mutable< / span > {< / div >
< div class = "line" > < a id = "l00488" name = "l00488" > < / a > < span class = "lineno" > 488< / span > < span class = "comment" > // TODO(user): When we use implied-bound substitution, we might still infer< / span > < / div >
< div class = "line" > < a id = "l00489" name = "l00489" > < / a > < span class = "lineno" > 489< / span > < span class = "comment" > // an interesting cut even if all variables are integer. See if we still< / span > < / div >
< div class = "line" > < a id = "l00490" name = "l00490" > < / a > < span class = "lineno" > 490< / span > < span class = "comment" > // want to skip all such constraints.< / span > < / div >
< div class = "line" > < a id = "l00491" name = "l00491" > < / a > < span class = "lineno" > 491< / span > < span class = "keywordflow" > if< / span > (AllVarsTakeIntegerValue(vars, lp_values)) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / 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 > < a class = "code hl_class" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html" > KnapsackSolverForCuts< / a > knapsack_solver(< / div >
< div class = "line" > < a id = "l00494" name = "l00494" > < / a > < span class = "lineno" > 494< / span > < span class = "stringliteral" > " Knapsack on demand cover cut generator" < / span > );< / div >
< div class = "line" > < a id = "l00495" name = "l00495" > < / a > < span class = "lineno" > 495< / span > int64_t skipped_constraints = 0;< / div >
< div class = "line" > < a id = "l00496" name = "l00496" > < / a > < span class = "lineno" > 496< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > mutable_constraint;< / div >
< div class = "line" > < a id = "l00497" name = "l00497" > < / a > < span class = "lineno" > 497< / span > < / div >
< div class = "line" > < a id = "l00498" name = "l00498" > < / a > < span class = "lineno" > 498< / span > < span class = "comment" > // Iterate through all knapsack constraints.< / span > < / div >
< div class = "line" > < a id = "l00499" name = "l00499" > < / a > < span class = "lineno" > 499< / span > implied_bounds_processor.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#ab354ebe396f7f5ad0c79ff2a928d9a40" > RecomputeCacheAndSeparateSomeImpliedBoundCuts< / a > (< / div >
< div class = "line" > < a id = "l00500" name = "l00500" > < / a > < span class = "lineno" > 500< / span > lp_values);< / div >
< div class = "line" > < a id = "l00501" name = "l00501" > < / a > < span class = "lineno" > 501< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & constraint : knapsack_constraints) {< / div >
< div class = "line" > < a id = "l00502" name = "l00502" > < / a > < span class = "lineno" > 502< / span > < span class = "keywordflow" > if< / span > (< 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 > > ()-> < a class = "code hl_function" href = "classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca" > LimitReached< / a > ()) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00503" name = "l00503" > < / a > < span class = "lineno" > 503< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Processing constraint: " < / span > < < constraint.DebugString();< / div >
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< div class = "line" > < a id = "l00504" name = "l00504" > < / a > < span class = "lineno" > 504< / span > < / div >
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< div class = "line" > < a id = "l00505" name = "l00505" > < / a > < span class = "lineno" > 505< / span > mutable_constraint = constraint;< / div >
< div class = "line" > < a id = "l00506" name = "l00506" > < / a > < span class = "lineno" > 506< / span > implied_bounds_processor.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#a7fb8d0b24091252e79aea6e5666f29e8" > ProcessUpperBoundedConstraint< / a > (< / div >
< div class = "line" > < a id = "l00507" name = "l00507" > < / a > < span class = "lineno" > 507< / span > lp_values, & mutable_constraint);< / div >
< div class = "line" > < a id = "l00508" name = "l00508" > < / a > < span class = "lineno" > 508< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5d3aa6734674f8f81aac3895cde58d6d" > MakeAllCoefficientsPositive< / a > (& mutable_constraint);< / div >
< div class = "line" > < a id = "l00509" name = "l00509" > < / a > < span class = "lineno" > 509< / span > < / div >
< div class = "line" > < a id = "l00510" name = "l00510" > < / a > < span class = "lineno" > 510< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > preprocessed_constraint =< / div >
< div class = "line" > < a id = "l00511" name = "l00511" > < / a > < span class = "lineno" > 511< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1de556a1559f25bd0819655d375f6c8e" > GetPreprocessedLinearConstraint< / a > (mutable_constraint, lp_values,< / div >
< div class = "line" > < a id = "l00512" name = "l00512" > < / a > < span class = "lineno" > 512< / span > *integer_trail);< / div >
< div class = "line" > < a id = "l00513" name = "l00513" > < / a > < span class = "lineno" > 513< / span > < span class = "keywordflow" > if< / span > (preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .empty()) < span class = "keywordflow" > continue< / span > ;< / div >
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< div class = "line" > < a id = "l00514" name = "l00514" > < / a > < span class = "lineno" > 514< / span > < / div >
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< div class = "line" > < a id = "l00515" name = "l00515" > < / a > < span class = "lineno" > 515< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a32f0016572d69bfcd1f3af811b2043ad" > CanFormValidKnapsackCover< / a > (preprocessed_constraint, lp_values,< / div >
< div class = "line" > < a id = "l00516" name = "l00516" > < / a > < span class = "lineno" > 516< / span > *integer_trail)) {< / div >
< div class = "line" > < a id = "l00517" name = "l00517" > < / a > < span class = "lineno" > 517< / span > skipped_constraints++;< / div >
< div class = "line" > < a id = "l00518" name = "l00518" > < / a > < span class = "lineno" > 518< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00519" name = "l00519" > < / a > < span class = "lineno" > 519< / span > }< / div >
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< div class = "line" > < a id = "l00520" name = "l00520" > < / a > < span class = "lineno" > 520< / span > < / div >
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< div class = "line" > < a id = "l00521" name = "l00521" > < / a > < span class = "lineno" > 521< / span > < span class = "comment" > // Profits are (upper_bounds[i] - lp_values[i]) for knapsack variables.< / span > < / div >
< div class = "line" > < a id = "l00522" name = "l00522" > < / a > < span class = "lineno" > 522< / span > std::vector< double> profits;< / div >
< div class = "line" > < a id = "l00523" name = "l00523" > < / a > < span class = "lineno" > 523< / span > profits.reserve(preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size());< / div >
< div class = "line" > < a id = "l00524" name = "l00524" > < / a > < span class = "lineno" > 524< / span > < / div >
< div class = "line" > < a id = "l00525" name = "l00525" > < / a > < span class = "lineno" > 525< / span > < span class = "comment" > // Weights are (coeffs[i] * (upper_bound[i] - lower_bound[i])).< / span > < / div >
< div class = "line" > < a id = "l00526" name = "l00526" > < / a > < span class = "lineno" > 526< / span > std::vector< double> weights;< / div >
< div class = "line" > < a id = "l00527" name = "l00527" > < / a > < span class = "lineno" > 527< / span > weights.reserve(preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size());< / div >
< div class = "line" > < a id = "l00528" name = "l00528" > < / a > < span class = "lineno" > 528< / span > < / div >
< div class = "line" > < a id = "l00529" name = "l00529" > < / a > < span class = "lineno" > 529< / span > < span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > = -< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ) - 1.0;< / div >
< div class = "line" > < a id = "l00530" name = "l00530" > < / a > < span class = "lineno" > 530< / span > < / div >
< div class = "line" > < a id = "l00531" name = "l00531" > < / a > < span class = "lineno" > 531< / span > < span class = "comment" > // Compute and store the sum of variable profits. This is the constant< / span > < / div >
< div class = "line" > < a id = "l00532" name = "l00532" > < / a > < span class = "lineno" > 532< / span > < span class = "comment" > // part of the objective of the problem we are trying to solve. Hence< / span > < / div >
< div class = "line" > < a id = "l00533" name = "l00533" > < / a > < span class = "lineno" > 533< / span > < span class = "comment" > // this part is not supplied to the knapsack_solver and is subtracted< / span > < / div >
< div class = "line" > < a id = "l00534" name = "l00534" > < / a > < span class = "lineno" > 534< / span > < span class = "comment" > // when we receive the knapsack solution.< / span > < / div >
< div class = "line" > < a id = "l00535" name = "l00535" > < / a > < span class = "lineno" > 535< / span > < span class = "keywordtype" > double< / span > sum_variable_profit = 0;< / div >
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< div class = "line" > < a id = "l00536" name = "l00536" > < / a > < span class = "lineno" > 536< / span > < / div >
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< div class = "line" > < a id = "l00537" name = "l00537" > < / a > < span class = "lineno" > 537< / span > < span class = "comment" > // Compute the profits, the weights and the capacity for the knapsack< / span > < / div >
< div class = "line" > < a id = "l00538" name = "l00538" > < / a > < span class = "lineno" > 538< / span > < span class = "comment" > // instance.< / span > < / div >
< div class = "line" > < a id = "l00539" name = "l00539" > < / a > < span class = "lineno" > 539< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00540" name = "l00540" > < / a > < span class = "lineno" > 540< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00541" name = "l00541" > < / a > < span class = "lineno" > 541< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "routing__filters_8cc.html#a8e4ee19dee0e00541dbe9bbc83d806ba" > coefficient< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i]);< / div >
< div class = "line" > < a id = "l00542" name = "l00542" > < / a > < span class = "lineno" > 542< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > var_ub = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ));< / div >
< div class = "line" > < a id = "l00543" name = "l00543" > < / a > < span class = "lineno" > 543< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > var_lb = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ));< / div >
< div class = "line" > < a id = "l00544" name = "l00544" > < / a > < span class = "lineno" > 544< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > variable_profit = var_ub - lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ];< / div >
< div class = "line" > < a id = "l00545" name = "l00545" > < / a > < span class = "lineno" > 545< / span > profits.push_back(variable_profit);< / div >
< div class = "line" > < a id = "l00546" name = "l00546" > < / a > < span class = "lineno" > 546< / span > < / div >
< div class = "line" > < a id = "l00547" name = "l00547" > < / a > < span class = "lineno" > 547< / span > sum_variable_profit += variable_profit;< / div >
< div class = "line" > < a id = "l00548" name = "l00548" > < / a > < span class = "lineno" > 548< / span > < / div >
< div class = "line" > < a id = "l00549" name = "l00549" > < / a > < span class = "lineno" > 549< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "pack_8cc.html#a4255f714cea26cdd64f6a0ee72d34a8c" > weight< / a > = < a class = "code hl_variable" href = "routing__filters_8cc.html#a8e4ee19dee0e00541dbe9bbc83d806ba" > coefficient< / a > * (var_ub - var_lb);< / div >
< div class = "line" > < a id = "l00550" name = "l00550" > < / a > < span class = "lineno" > 550< / span > weights.push_back(< a class = "code hl_variable" href = "pack_8cc.html#a4255f714cea26cdd64f6a0ee72d34a8c" > weight< / a > );< / div >
< div class = "line" > < a id = "l00551" name = "l00551" > < / a > < span class = "lineno" > 551< / span > < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > += < a class = "code hl_variable" href = "pack_8cc.html#a4255f714cea26cdd64f6a0ee72d34a8c" > weight< / a > + < a class = "code hl_variable" href = "routing__filters_8cc.html#a8e4ee19dee0e00541dbe9bbc83d806ba" > coefficient< / a > * var_lb;< / div >
< div class = "line" > < a id = "l00552" name = "l00552" > < / a > < span class = "lineno" > 552< / 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_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > < 0.0) < span class = "keywordflow" > continue< / span > ;< / div >
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< div class = "line" > < a id = "l00554" name = "l00554" > < / a > < span class = "lineno" > 554< / span > < / div >
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< div class = "line" > < a id = "l00555" name = "l00555" > < / a > < span class = "lineno" > 555< / span > std::vector< IntegerVariable> cut_vars;< / div >
< div class = "line" > < a id = "l00556" name = "l00556" > < / a > < span class = "lineno" > 556< / span > std::vector< IntegerValue> cut_vars_original_coefficients;< / div >
< div class = "line" > < a id = "l00557" name = "l00557" > < / a > < span class = "lineno" > 557< / span > < / div >
< div class = "line" > < a id = "l00558" name = "l00558" > < / a > < span class = "lineno" > 558< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Knapsack size: " < / span > < < profits.size();< / div >
< div class = "line" > < a id = "l00559" name = "l00559" > < / a > < span class = "lineno" > 559< / span > knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#a902b91803b24fe467929767c65b6ee4f" > Init< / a > (profits, weights, < a class = "code hl_variable" href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > );< / 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" > 561< / span > < span class = "comment" > // Set the time limit for the knapsack solver.< / span > < / div >
< div class = "line" > < a id = "l00562" name = "l00562" > < / a > < span class = "lineno" > 562< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > time_limit_for_knapsack_solver =< / div >
< div class = "line" > < a id = "l00563" name = "l00563" > < / a > < span class = "lineno" > 563< / span > < 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 > > ()-> GetTimeLeft();< / div >
< div class = "line" > < a id = "l00564" name = "l00564" > < / a > < span class = "lineno" > 564< / span > < / div >
< div class = "line" > < a id = "l00565" name = "l00565" > < / a > < span class = "lineno" > 565< / span > < span class = "comment" > // Solve the instance and subtract the constant part to compute the< / span > < / div >
< div class = "line" > < a id = "l00566" name = "l00566" > < / a > < span class = "lineno" > 566< / span > < span class = "comment" > // sum_of_distance_to_ub_for_vars_in_cover.< / span > < / div >
< div class = "line" > < a id = "l00567" name = "l00567" > < / a > < span class = "lineno" > 567< / span > < span class = "comment" > // TODO(user): Consider solving the instance approximately.< / span > < / div >
< div class = "line" > < a id = "l00568" name = "l00568" > < / a > < span class = "lineno" > 568< / span > < span class = "keywordtype" > bool< / span > is_solution_optimal = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00569" name = "l00569" > < / a > < span class = "lineno" > 569< / span > knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#afd53920302b4dcd6ef445bc52a001a5b" > set_solution_upper_bound_threshold< / a > (< / div >
< div class = "line" > < a id = "l00570" name = "l00570" > < / a > < span class = "lineno" > 570< / span > sum_variable_profit - 1.0 + kMinCutViolation);< / div >
< div class = "line" > < a id = "l00571" name = "l00571" > < / a > < span class = "lineno" > 571< / span > < span class = "comment" > // TODO(user): Consider providing lower bound threshold as< / span > < / div >
< div class = "line" > < a id = "l00572" name = "l00572" > < / a > < span class = "lineno" > 572< / span > < span class = "comment" > // sum_variable_profit - 1.0 + kMinCutViolation.< / span > < / div >
< div class = "line" > < a id = "l00573" name = "l00573" > < / a > < span class = "lineno" > 573< / span > < span class = "comment" > // TODO(user): Set node limit for knapsack solver.< / span > < / div >
< div class = "line" > < a id = "l00574" name = "l00574" > < / a > < span class = "lineno" > 574< / span > < span class = "keyword" > auto< / span > time_limit_for_solver =< / div >
< div class = "line" > < a id = "l00575" name = "l00575" > < / a > < span class = "lineno" > 575< / span > absl::make_unique< TimeLimit> (time_limit_for_knapsack_solver);< / div >
< div class = "line" > < a id = "l00576" name = "l00576" > < / a > < span class = "lineno" > 576< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > sum_of_distance_to_ub_for_vars_in_cover =< / div >
< div class = "line" > < a id = "l00577" name = "l00577" > < / a > < span class = "lineno" > 577< / span > sum_variable_profit -< / div >
< div class = "line" > < a id = "l00578" name = "l00578" > < / a > < span class = "lineno" > 578< / span > knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#aab4a9c689632460b6b96f3d4bf22f86e" > Solve< / a > (time_limit_for_solver.get(),< / div >
< div class = "line" > < a id = "l00579" name = "l00579" > < / a > < span class = "lineno" > 579< / span > & is_solution_optimal);< / div >
< div class = "line" > < a id = "l00580" name = "l00580" > < / a > < span class = "lineno" > 580< / span > < span class = "keywordflow" > if< / span > (is_solution_optimal) {< / div >
< div class = "line" > < a id = "l00581" name = "l00581" > < / a > < span class = "lineno" > 581< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Knapsack Optimal solution found yay !" < / span > ;< / div >
< div class = "line" > < a id = "l00582" name = "l00582" > < / a > < span class = "lineno" > 582< / span > }< / div >
< div class = "line" > < a id = "l00583" name = "l00583" > < / a > < span class = "lineno" > 583< / span > < span class = "keywordflow" > if< / span > (time_limit_for_solver-> LimitReached()) {< / div >
< div class = "line" > < a id = "l00584" name = "l00584" > < / a > < span class = "lineno" > 584< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < < span class = "stringliteral" > " Knapsack Solver run out of time limit." < / span > ;< / 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 > < span class = "keywordflow" > if< / span > (sum_of_distance_to_ub_for_vars_in_cover < 1.0 - kMinCutViolation) {< / div >
< div class = "line" > < a id = "l00587" name = "l00587" > < / a > < span class = "lineno" > 587< / span > < span class = "comment" > // Constraint is eligible for the cover.< / span > < / div >
< div class = "line" > < a id = "l00588" name = "l00588" > < / a > < span class = "lineno" > 588< / span > < / div >
< div class = "line" > < a id = "l00589" name = "l00589" > < / a > < span class = "lineno" > 589< / span > IntegerValue constraint_ub_for_cut = preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ;< / div >
< div class = "line" > < a id = "l00590" name = "l00590" > < / a > < span class = "lineno" > 590< / span > absl::btree_set< IntegerVariable> vars_in_cut;< / div >
< div class = "line" > < a id = "l00591" name = "l00591" > < / a > < span class = "lineno" > 591< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l00592" name = "l00592" > < / a > < span class = "lineno" > 592< / span > < span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l00593" name = "l00593" > < / a > < span class = "lineno" > 593< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "routing__filters_8cc.html#a8e4ee19dee0e00541dbe9bbc83d806ba" > coefficient< / a > = preprocessed_constraint.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00594" name = "l00594" > < / a > < span class = "lineno" > 594< / span > < span class = "keywordflow" > if< / span > (!knapsack_solver.< a class = "code hl_function" href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#a3bd66bb6693c84e8b758c0d8a18ed9e5" > best_solution< / a > (i)) {< / div >
< div class = "line" > < a id = "l00595" name = "l00595" > < / a > < span class = "lineno" > 595< / span > cut_vars.push_back(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00596" name = "l00596" > < / a > < span class = "lineno" > 596< / span > cut_vars_original_coefficients.push_back(< a class = "code hl_variable" href = "routing__filters_8cc.html#a8e4ee19dee0e00541dbe9bbc83d806ba" > coefficient< / a > );< / div >
< div class = "line" > < a id = "l00597" name = "l00597" > < / a > < span class = "lineno" > 597< / span > vars_in_cut.insert(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00598" name = "l00598" > < / a > < span class = "lineno" > 598< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00599" name = "l00599" > < / a > < span class = "lineno" > 599< / span > < span class = "keyword" > const< / span > IntegerValue var_lb = integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l00600" name = "l00600" > < / a > < span class = "lineno" > 600< / span > constraint_ub_for_cut -= < a class = "code hl_variable" href = "routing__filters_8cc.html#a8e4ee19dee0e00541dbe9bbc83d806ba" > coefficient< / a > * var_lb;< / 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 > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > cut = GenerateKnapsackCutForCover(< / div >
< div class = "line" > < a id = "l00604" name = "l00604" > < / a > < span class = "lineno" > 604< / span > cut_vars, cut_vars_original_coefficients, constraint_ub_for_cut,< / div >
< div class = "line" > < a id = "l00605" name = "l00605" > < / a > < span class = "lineno" > 605< / span > *integer_trail);< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00606" name = "l00606" > < / a > < span class = "lineno" > 606< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00607" name = "l00607" > < / a > < span class = "lineno" > 607< / span > < span class = "comment" > // Check if the constraint has only binary variables.< / span > < / div >
< div class = "line" > < a id = "l00608" name = "l00608" > < / a > < span class = "lineno" > 608< / span > < span class = "keywordtype" > bool< / span > is_lifted = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00609" name = "l00609" > < / a > < span class = "lineno" > 609< / span > < span class = "keywordflow" > if< / span > (ConstraintIsEligibleForLifting(cut, *integer_trail)) {< / div >
< div class = "line" > < a id = "l00610" name = "l00610" > < / a > < span class = "lineno" > 610< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#accb737ae1fad15d6798a4b8bc27cea51" > LiftKnapsackCut< / a > (mutable_constraint, lp_values,< / div >
< div class = "line" > < a id = "l00611" name = "l00611" > < / a > < span class = "lineno" > 611< / span > cut_vars_original_coefficients, *integer_trail,< / div >
< div class = "line" > < a id = "l00612" name = "l00612" > < / a > < span class = "lineno" > 612< / span > < 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 > > (), & cut)) {< / div >
< div class = "line" > < a id = "l00613" name = "l00613" > < / a > < span class = "lineno" > 613< / span > is_lifted = < span class = "keyword" > true< / span > ;< / 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 > }< / div >
< div class = "line" > < a id = "l00616" name = "l00616" > < / a > < span class = "lineno" > 616< / span > < / div >
< div class = "line" > < a id = "l00617" name = "l00617" > < / a > < span class = "lineno" > 617< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274" > CHECK< / a > (!SolutionSatisfiesConstraint(cut, lp_values));< / div >
< div class = "line" > < a id = "l00618" name = "l00618" > < / a > < span class = "lineno" > 618< / span > manager-> AddCut(cut, is_lifted ? < span class = "stringliteral" > " LiftedKnapsack" < / span > : < span class = "stringliteral" > " Knapsack" < / span > ,< / div >
< div class = "line" > < a id = "l00619" name = "l00619" > < / a > < span class = "lineno" > 619< / span > lp_values);< / div >
< div class = "line" > < a id = "l00620" name = "l00620" > < / a > < span class = "lineno" > 620< / span > }< / div >
< div class = "line" > < a id = "l00621" name = "l00621" > < / a > < span class = "lineno" > 621< / span > }< / div >
< div class = "line" > < a id = "l00622" name = "l00622" > < / a > < span class = "lineno" > 622< / span > < span class = "keywordflow" > if< / span > (skipped_constraints > 0) {< / div >
< div class = "line" > < a id = "l00623" name = "l00623" > < / a > < span class = "lineno" > 623< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Skipped constraints: " < / span > < < skipped_constraints;< / div >
< div class = "line" > < a id = "l00624" name = "l00624" > < / a > < span class = "lineno" > 624< / span > }< / div >
< div class = "line" > < a id = "l00625" name = "l00625" > < / a > < span class = "lineno" > 625< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00626" name = "l00626" > < / a > < span class = "lineno" > 626< / span > };< / div >
< div class = "line" > < a id = "l00627" name = "l00627" > < / a > < span class = "lineno" > 627< / span > < / div >
< div class = "line" > < a id = "l00628" name = "l00628" > < / a > < span class = "lineno" > 628< / span > < span class = "keywordflow" > return< / span > result;< / 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 > < / div >
< div class = "line" > < a id = "l00631" name = "l00631" > < / a > < span class = "lineno" > 631< / span > < span class = "comment" > // Compute the larger t < = max_t such that t * rhs_remainder > = divisor / 2.< / span > < / div >
< div class = "line" > < a id = "l00632" name = "l00632" > < / a > < span class = "lineno" > 632< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00633" name = "l00633" > < / a > < span class = "lineno" > 633< / span > < span class = "comment" > // This is just a separate function as it is slightly faster to compute the< / span > < / div >
< div class = "line" > < a id = "l00634" name = "l00634" > < / a > < span class = "lineno" > 634< / span > < span class = "comment" > // result only once.< / span > < / div >
< div class = "line" > < a id = "l00635" name = "l00635" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a44bd0a015c444c2e2d58a002a09a1ea5" > 635< / a > < / span > IntegerValue < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a44bd0a015c444c2e2d58a002a09a1ea5" > GetFactorT< / a > (IntegerValue rhs_remainder, IntegerValue divisor,< / div >
< div class = "line" > < a id = "l00636" name = "l00636" > < / a > < span class = "lineno" > 636< / span > IntegerValue max_t) {< / div >
< div class = "line" > < a id = "l00637" name = "l00637" > < / a > < span class = "lineno" > 637< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (max_t, 1);< / div >
< div class = "line" > < a id = "l00638" name = "l00638" > < / a > < span class = "lineno" > 638< / span > < span class = "keywordflow" > return< / span > rhs_remainder == 0< / div >
< div class = "line" > < a id = "l00639" name = "l00639" > < / a > < span class = "lineno" > 639< / span > ? max_t< / div >
< div class = "line" > < a id = "l00640" name = "l00640" > < / a > < span class = "lineno" > 640< / span > : < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (max_t, < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a29b96869d2a821cf1d2e6099e7a0f51b" > CeilRatio< / a > (divisor / 2, rhs_remainder));< / div >
< div class = "line" > < a id = "l00641" name = "l00641" > < / a > < span class = "lineno" > 641< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00642" name = "l00642" > < / a > < span class = "lineno" > 642< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00643" name = "l00643" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a8e30df8580d6914abba28f43b6e4e667" > 643< / a > < / span > std::function< IntegerValue(IntegerValue)> < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8e30df8580d6914abba28f43b6e4e667" > GetSuperAdditiveRoundingFunction< / a > (< / div >
< div class = "line" > < a id = "l00644" name = "l00644" > < / a > < span class = "lineno" > 644< / span > IntegerValue rhs_remainder, IntegerValue divisor, IntegerValue t,< / div >
< div class = "line" > < a id = "l00645" name = "l00645" > < / a > < span class = "lineno" > 645< / span > IntegerValue max_scaling) {< / div >
< div class = "line" > < a id = "l00646" name = "l00646" > < / a > < span class = "lineno" > 646< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (max_scaling, 1);< / 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#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (t, 1);< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l00648" name = "l00648" > < / a > < span class = "lineno" > 648< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00649" name = "l00649" > < / a > < span class = "lineno" > 649< / span > < span class = "comment" > // Adjust after the multiplication by t.< / span > < / div >
< div class = "line" > < a id = "l00650" name = "l00650" > < / a > < span class = "lineno" > 650< / span > rhs_remainder *= t;< / div >
< div class = "line" > < a id = "l00651" name = "l00651" > < / a > < span class = "lineno" > 651< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a" > DCHECK_LT< / a > (rhs_remainder, divisor);< / div >
< div class = "line" > < a id = "l00652" name = "l00652" > < / a > < span class = "lineno" > 652< / span > < / div >
< div class = "line" > < a id = "l00653" name = "l00653" > < / a > < span class = "lineno" > 653< / span > < span class = "comment" > // Make sure we don' t have an integer overflow below. Note that we assume that< / span > < / div >
< div class = "line" > < a id = "l00654" name = "l00654" > < / a > < span class = "lineno" > 654< / span > < span class = "comment" > // divisor and the maximum coeff magnitude are not too different (maybe a< / span > < / div >
< div class = "line" > < a id = "l00655" name = "l00655" > < / a > < span class = "lineno" > 655< / span > < span class = "comment" > // factor 1000 at most) so that the final result will never overflow.< / span > < / div >
< div class = "line" > < a id = "l00656" name = "l00656" > < / a > < span class = "lineno" > 656< / span > max_scaling =< / div >
< div class = "line" > < a id = "l00657" name = "l00657" > < / a > < span class = "lineno" > 657< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (max_scaling, < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::numeric_limits< int64_t> ::max< / a > () / divisor);< / div >
< div class = "line" > < a id = "l00658" name = "l00658" > < / a > < span class = "lineno" > 658< / span > < / div >
< div class = "line" > < a id = "l00659" name = "l00659" > < / a > < span class = "lineno" > 659< / span > < span class = "keyword" > const< / span > IntegerValue size = divisor - rhs_remainder;< / div >
< div class = "line" > < a id = "l00660" name = "l00660" > < / a > < span class = "lineno" > 660< / span > < span class = "keywordflow" > if< / span > (max_scaling == 1 || size == 1) {< / div >
< div class = "line" > < a id = "l00661" name = "l00661" > < / a > < span class = "lineno" > 661< / span > < span class = "comment" > // TODO(user): Use everywhere a two step computation to avoid overflow?< / span > < / div >
< div class = "line" > < a id = "l00662" name = "l00662" > < / a > < span class = "lineno" > 662< / span > < span class = "comment" > // First divide by divisor, then multiply by t. For now, we limit t so that< / span > < / div >
< div class = "line" > < a id = "l00663" name = "l00663" > < / a > < span class = "lineno" > 663< / span > < span class = "comment" > // we never have an overflow instead.< / span > < / div >
< div class = "line" > < a id = "l00664" name = "l00664" > < / a > < span class = "lineno" > 664< / span > < span class = "keywordflow" > return< / span > [t, divisor](IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ) {< / div >
< div class = "line" > < a id = "l00665" name = "l00665" > < / a > < span class = "lineno" > 665< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (t * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , divisor);< / div >
< div class = "line" > < a id = "l00666" name = "l00666" > < / a > < span class = "lineno" > 666< / span > };< / div >
< div class = "line" > < a id = "l00667" name = "l00667" > < / a > < span class = "lineno" > 667< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (size < = max_scaling) {< / div >
< div class = "line" > < a id = "l00668" name = "l00668" > < / a > < span class = "lineno" > 668< / span > < span class = "keywordflow" > return< / span > [size, rhs_remainder, t, divisor](IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ) {< / div >
< div class = "line" > < a id = "l00669" name = "l00669" > < / a > < span class = "lineno" > 669< / span > < span class = "keyword" > const< / span > IntegerValue t_coeff = t * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l00670" name = "l00670" > < / a > < span class = "lineno" > 670< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2" > ratio< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (t_coeff, divisor);< / div >
< div class = "line" > < a id = "l00671" name = "l00671" > < / a > < span class = "lineno" > 671< / span > < span class = "keyword" > const< / span > IntegerValue remainder = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a83f714c395df7a814ed067125f567a0d" > PositiveRemainder< / a > (t_coeff, divisor);< / div >
< div class = "line" > < a id = "l00672" name = "l00672" > < / a > < span class = "lineno" > 672< / span > < span class = "keyword" > const< / span > IntegerValue diff = remainder - rhs_remainder;< / div >
< div class = "line" > < a id = "l00673" name = "l00673" > < / a > < span class = "lineno" > 673< / span > < span class = "keywordflow" > return< / span > size * < a class = "code hl_variable" href = "revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2" > ratio< / a > + < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (IntegerValue(0), diff);< / div >
< div class = "line" > < a id = "l00674" name = "l00674" > < / a > < span class = "lineno" > 674< / span > };< / div >
< div class = "line" > < a id = "l00675" name = "l00675" > < / a > < span class = "lineno" > 675< / span > } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (max_scaling.value() * rhs_remainder.value() < divisor) {< / div >
< div class = "line" > < a id = "l00676" name = "l00676" > < / a > < span class = "lineno" > 676< / span > < span class = "comment" > // Because of our max_t limitation, the rhs_remainder might stay small.< / span > < / div >
< div class = "line" > < a id = "l00677" name = "l00677" > < / a > < span class = "lineno" > 677< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00678" name = "l00678" > < / a > < span class = "lineno" > 678< / span > < span class = "comment" > // If it is " too small" we cannot use the code below because it will not be< / span > < / div >
< div class = "line" > < a id = "l00679" name = "l00679" > < / a > < span class = "lineno" > 679< / span > < span class = "comment" > // valid. So we just divide divisor into max_scaling bucket. The< / span > < / div >
< div class = "line" > < a id = "l00680" name = "l00680" > < / a > < span class = "lineno" > 680< / span > < span class = "comment" > // rhs_remainder will be in the bucket 0.< / span > < / div >
< div class = "line" > < a id = "l00681" name = "l00681" > < / a > < span class = "lineno" > 681< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00682" name = "l00682" > < / a > < span class = "lineno" > 682< / span > < span class = "comment" > // Note(user): This seems the same as just increasing t, modulo integer< / span > < / div >
< div class = "line" > < a id = "l00683" name = "l00683" > < / a > < span class = "lineno" > 683< / span > < span class = "comment" > // overflows. Maybe we should just always do the computation like this so< / span > < / div >
< div class = "line" > < a id = "l00684" name = "l00684" > < / a > < span class = "lineno" > 684< / span > < span class = "comment" > // that we can use larger t even if coeff is close to kint64max.< / span > < / div >
< div class = "line" > < a id = "l00685" name = "l00685" > < / a > < span class = "lineno" > 685< / span > < span class = "keywordflow" > return< / span > [t, divisor, max_scaling](IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ) {< / div >
< div class = "line" > < a id = "l00686" name = "l00686" > < / a > < span class = "lineno" > 686< / span > < span class = "keyword" > const< / span > IntegerValue t_coeff = t * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l00687" name = "l00687" > < / a > < span class = "lineno" > 687< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2" > ratio< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (t_coeff, divisor);< / div >
< div class = "line" > < a id = "l00688" name = "l00688" > < / a > < span class = "lineno" > 688< / span > < span class = "keyword" > const< / span > IntegerValue remainder = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a83f714c395df7a814ed067125f567a0d" > PositiveRemainder< / a > (t_coeff, divisor);< / div >
< div class = "line" > < a id = "l00689" name = "l00689" > < / a > < span class = "lineno" > 689< / span > < span class = "keyword" > const< / span > IntegerValue bucket = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (remainder * max_scaling, divisor);< / div >
< div class = "line" > < a id = "l00690" name = "l00690" > < / a > < span class = "lineno" > 690< / span > < span class = "keywordflow" > return< / span > max_scaling * < a class = "code hl_variable" href = "revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2" > ratio< / a > + bucket;< / div >
< div class = "line" > < a id = "l00691" name = "l00691" > < / a > < span class = "lineno" > 691< / span > };< / div >
< div class = "line" > < a id = "l00692" name = "l00692" > < / a > < span class = "lineno" > 692< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l00693" name = "l00693" > < / a > < span class = "lineno" > 693< / span > < span class = "comment" > // We divide (size = divisor - rhs_remainder) into (max_scaling - 1) buckets< / span > < / div >
< div class = "line" > < a id = "l00694" name = "l00694" > < / a > < span class = "lineno" > 694< / span > < span class = "comment" > // and increase the function by 1 / max_scaling for each of them.< / span > < / div >
< div class = "line" > < a id = "l00695" name = "l00695" > < / a > < span class = "lineno" > 695< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00696" name = "l00696" > < / a > < span class = "lineno" > 696< / span > < span class = "comment" > // Note that for different values of max_scaling, we get a family of< / span > < / div >
< div class = "line" > < a id = "l00697" name = "l00697" > < / a > < span class = "lineno" > 697< / span > < span class = "comment" > // functions that do not dominate each others. So potentially, a max scaling< / span > < / div >
< div class = "line" > < a id = "l00698" name = "l00698" > < / a > < span class = "lineno" > 698< / span > < span class = "comment" > // as low as 2 could lead to the better cut (this is exactly the Letchford & < / span > < / div >
< div class = "line" > < a id = "l00699" name = "l00699" > < / a > < span class = "lineno" > 699< / span > < span class = "comment" > // Lodi function).< / span > < / div >
< div class = "line" > < a id = "l00700" name = "l00700" > < / a > < span class = "lineno" > 700< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00701" name = "l00701" > < / a > < span class = "lineno" > 701< / span > < span class = "comment" > // Another interesting fact, is that if we want to compute the maximum alpha< / span > < / div >
< div class = "line" > < a id = "l00702" name = "l00702" > < / a > < span class = "lineno" > 702< / span > < span class = "comment" > // for a constraint with 2 terms like:< / span > < / div >
< div class = "line" > < a id = "l00703" name = "l00703" > < / a > < span class = "lineno" > 703< / span > < span class = "comment" > // divisor * Y + (ratio * divisor + remainder) * X< / span > < / div >
< div class = "line" > < a id = "l00704" name = "l00704" > < / a > < span class = "lineno" > 704< / span > < span class = "comment" > // < = rhs_ratio * divisor + rhs_remainder< / span > < / div >
< div class = "line" > < a id = "l00705" name = "l00705" > < / a > < span class = "lineno" > 705< / span > < span class = "comment" > // so that we have the cut:< / span > < / div >
< div class = "line" > < a id = "l00706" name = "l00706" > < / a > < span class = "lineno" > 706< / span > < span class = "comment" > // Y + (ratio + alpha) * X < = rhs_ratio< / span > < / div >
< div class = "line" > < a id = "l00707" name = "l00707" > < / a > < span class = "lineno" > 707< / span > < span class = "comment" > // This is the same as computing the maximum alpha such that for all integer< / span > < / div >
< div class = "line" > < a id = "l00708" name = "l00708" > < / a > < span class = "lineno" > 708< / span > < span class = "comment" > // X > 0 we have CeilRatio(alpha * divisor * X, divisor)< / span > < / div >
< div class = "line" > < a id = "l00709" name = "l00709" > < / a > < span class = "lineno" > 709< / span > < span class = "comment" > // < = CeilRatio(remainder * X - rhs_remainder, divisor).< / span > < / div >
< div class = "line" > < a id = "l00710" name = "l00710" > < / a > < span class = "lineno" > 710< / span > < span class = "comment" > // We can prove that this alpha is of the form (n - 1) / n, and it will< / span > < / div >
< div class = "line" > < a id = "l00711" name = "l00711" > < / a > < span class = "lineno" > 711< / span > < span class = "comment" > // be reached by such function for a max_scaling of n.< / span > < / div >
< div class = "line" > < a id = "l00712" name = "l00712" > < / a > < span class = "lineno" > 712< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00713" name = "l00713" > < / a > < span class = "lineno" > 713< / span > < span class = "comment" > // TODO(user): This function is not always maximal when< / span > < / div >
< div class = "line" > < a id = "l00714" name = "l00714" > < / a > < span class = "lineno" > 714< / span > < span class = "comment" > // size % (max_scaling - 1) == 0. Improve?< / span > < / div >
< div class = "line" > < a id = "l00715" name = "l00715" > < / a > < span class = "lineno" > 715< / span > < span class = "keywordflow" > return< / span > [size, rhs_remainder, t, divisor, max_scaling](IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ) {< / div >
< div class = "line" > < a id = "l00716" name = "l00716" > < / a > < span class = "lineno" > 716< / span > < span class = "keyword" > const< / span > IntegerValue t_coeff = t * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l00717" name = "l00717" > < / a > < span class = "lineno" > 717< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2" > ratio< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (t_coeff, divisor);< / div >
< div class = "line" > < a id = "l00718" name = "l00718" > < / a > < span class = "lineno" > 718< / span > < span class = "keyword" > const< / span > IntegerValue remainder = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a83f714c395df7a814ed067125f567a0d" > PositiveRemainder< / a > (t_coeff, divisor);< / div >
< div class = "line" > < a id = "l00719" name = "l00719" > < / a > < span class = "lineno" > 719< / span > < span class = "keyword" > const< / span > IntegerValue diff = remainder - rhs_remainder;< / div >
< div class = "line" > < a id = "l00720" name = "l00720" > < / a > < span class = "lineno" > 720< / span > < span class = "keyword" > const< / span > IntegerValue bucket =< / div >
< div class = "line" > < a id = "l00721" name = "l00721" > < / a > < span class = "lineno" > 721< / span > diff > 0 ? < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a29b96869d2a821cf1d2e6099e7a0f51b" > CeilRatio< / a > (diff * (max_scaling - 1), size)< / div >
< div class = "line" > < a id = "l00722" name = "l00722" > < / a > < span class = "lineno" > 722< / span > : IntegerValue(0);< / div >
< div class = "line" > < a id = "l00723" name = "l00723" > < / a > < span class = "lineno" > 723< / span > < span class = "keywordflow" > return< / span > max_scaling * < a class = "code hl_variable" href = "revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2" > ratio< / a > + bucket;< / div >
< div class = "line" > < a id = "l00724" name = "l00724" > < / a > < span class = "lineno" > 724< / span > };< / div >
< div class = "line" > < a id = "l00725" name = "l00725" > < / a > < span class = "lineno" > 725< / span > }< / div >
< div class = "line" > < a id = "l00726" name = "l00726" > < / a > < span class = "lineno" > 726< / span > }< / div >
< div class = "line" > < a id = "l00727" name = "l00727" > < / a > < span class = "lineno" > 727< / span > < / div >
< div class = "line" > < a id = "l00728" name = "l00728" > < / a > < span class = "lineno" > 728< / span > < span class = "comment" > // TODO(user): This has been optimized a bit, but we can probably do even better< / span > < / div >
< div class = "line" > < a id = "l00729" name = "l00729" > < / a > < span class = "lineno" > 729< / span > < span class = "comment" > // as it still takes around 25% percent of the run time when all the cuts are on< / span > < / div >
< div class = "line" > < a id = "l00730" name = "l00730" > < / a > < span class = "lineno" > 730< / span > < span class = "comment" > // for the opm*mps.gz problems and others.< / span > < / div >
< div class = "line" > < a id = "l00731" name = "l00731" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_integer_rounding_cut_helper.html#a66c8e6dc26260b69dcdf7668925dc3aa" > 731< / a > < / span > < span class = "keywordtype" > void< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_rounding_cut_helper.html#a66c8e6dc26260b69dcdf7668925dc3aa" > IntegerRoundingCutHelper::ComputeCut< / a > (< / div >
< div class = "line" > < a id = "l00732" name = "l00732" > < / a > < span class = "lineno" > 732< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_rounding_options.html" > RoundingOptions< / a > options, < span class = "keyword" > const< / span > std::vector< double> & lp_values,< / div >
< div class = "line" > < a id = "l00733" name = "l00733" > < / a > < span class = "lineno" > 733< / span > < span class = "keyword" > const< / span > std::vector< IntegerValue> & < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > ,< / div >
< div class = "line" > < a id = "l00734" name = "l00734" > < / a > < span class = "lineno" > 734< / span > < span class = "keyword" > const< / span > std::vector< IntegerValue> & < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > ,< / div >
< div class = "line" > < a id = "l00735" name = "l00735" > < / a > < span class = "lineno" > 735< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html" > ImpliedBoundsProcessor< / a > * ib_processor, < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > * cut) {< / div >
< div class = "line" > < a id = "l00736" name = "l00736" > < / a > < span class = "lineno" > 736< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > size = lp_values.size();< / div >
< div class = "line" > < a id = "l00737" name = "l00737" > < / a > < span class = "lineno" > 737< / span > < span class = "keywordflow" > if< / span > (size == 0) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l00738" name = "l00738" > < / a > < span class = "lineno" > 738< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > .size(), size);< / div >
< div class = "line" > < a id = "l00739" name = "l00739" > < / a > < span class = "lineno" > 739< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > .size(), size);< / div >
< div class = "line" > < a id = "l00740" name = "l00740" > < / a > < span class = "lineno" > 740< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(), size);< / div >
< div class = "line" > < a id = "l00741" name = "l00741" > < / a > < span class = "lineno" > 741< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > .size(), size);< / div >
< div class = "line" > < a id = "l00742" name = "l00742" > < / a > < span class = "lineno" > 742< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b" > CHECK_EQ< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > , < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > );< / div >
< div class = "line" > < a id = "l00743" name = "l00743" > < / a > < span class = "lineno" > 743< / span > < / div >
< div class = "line" > < a id = "l00744" name = "l00744" > < / a > < span class = "lineno" > 744< / span > < span class = "comment" > // To optimize the computation of the best divisor below, we only need to< / span > < / div >
< div class = "line" > < a id = "l00745" name = "l00745" > < / a > < span class = "lineno" > 745< / span > < span class = "comment" > // look at the indices with a shifted lp value that is not close to zero.< / span > < / div >
< div class = "line" > < a id = "l00746" name = "l00746" > < / a > < span class = "lineno" > 746< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00747" name = "l00747" > < / a > < span class = "lineno" > 747< / span > < span class = "comment" > // TODO(user): sort by decreasing lp_values so that our early abort test in< / span > < / div >
< div class = "line" > < a id = "l00748" name = "l00748" > < / a > < span class = "lineno" > 748< / span > < span class = "comment" > // the critical loop below has more chance of returning early? I tried but it< / span > < / div >
< div class = "line" > < a id = "l00749" name = "l00749" > < / a > < span class = "lineno" > 749< / span > < span class = "comment" > // didn' t seems to change much though.< / span > < / div >
< div class = "line" > < a id = "l00750" name = "l00750" > < / a > < span class = "lineno" > 750< / span > relevant_indices_.clear();< / div >
< div class = "line" > < a id = "l00751" name = "l00751" > < / a > < span class = "lineno" > 751< / span > relevant_lp_values_.clear();< / div >
< div class = "line" > < a id = "l00752" name = "l00752" > < / a > < span class = "lineno" > 752< / span > relevant_coeffs_.clear();< / div >
< div class = "line" > < a id = "l00753" name = "l00753" > < / a > < span class = "lineno" > 753< / span > relevant_bound_diffs_.clear();< / div >
< div class = "line" > < a id = "l00754" name = "l00754" > < / a > < span class = "lineno" > 754< / span > divisors_.clear();< / div >
< div class = "line" > < a id = "l00755" name = "l00755" > < / a > < span class = "lineno" > 755< / span > adjusted_coeffs_.clear();< / div >
< div class = "line" > < a id = "l00756" name = "l00756" > < / a > < span class = "lineno" > 756< / span > < / div >
< div class = "line" > < a id = "l00757" name = "l00757" > < / a > < span class = "lineno" > 757< / span > < span class = "comment" > // Compute the maximum magnitude for non-fixed variables.< / span > < / div >
< div class = "line" > < a id = "l00758" name = "l00758" > < / a > < span class = "lineno" > 758< / span > IntegerValue max_magnitude(0);< / div >
< div class = "line" > < a id = "l00759" name = "l00759" > < / a > < span class = "lineno" > 759< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l00760" name = "l00760" > < / a > < span class = "lineno" > 760< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [i] == < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [i]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00761" name = "l00761" > < / a > < span class = "lineno" > 761< / span > < span class = "keyword" > const< / span > IntegerValue magnitude = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1e30e51173c7e43a8c0b4668d5e3f050" > IntTypeAbs< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i]);< / div >
< div class = "line" > < a id = "l00762" name = "l00762" > < / a > < span class = "lineno" > 762< / span > max_magnitude = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_magnitude, magnitude);< / div >
< div class = "line" > < a id = "l00763" name = "l00763" > < / a > < span class = "lineno" > 763< / span > }< / 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" > // Shift each variable using its lower/upper bound so that no variable can< / span > < / div >
< div class = "line" > < a id = "l00766" name = "l00766" > < / a > < span class = "lineno" > 766< / span > < span class = "comment" > // change sign. We eventually do a change of variable to its negation so< / span > < / div >
< div class = "line" > < a id = "l00767" name = "l00767" > < / a > < span class = "lineno" > 767< / span > < span class = "comment" > // that all variable are non-negative.< / span > < / div >
< div class = "line" > < a id = "l00768" name = "l00768" > < / a > < span class = "lineno" > 768< / span > < span class = "keywordtype" > bool< / span > overflow = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00769" name = "l00769" > < / a > < span class = "lineno" > 769< / span > change_sign_at_postprocessing_.assign(size, < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a id = "l00770" name = "l00770" > < / a > < span class = "lineno" > 770< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l00771" name = "l00771" > < / a > < span class = "lineno" > 771< / span > < span class = "keywordflow" > if< / span > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i] == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00772" name = "l00772" > < / a > < span class = "lineno" > 772< / span > < span class = "keyword" > const< / span > IntegerValue magnitude = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1e30e51173c7e43a8c0b4668d5e3f050" > IntTypeAbs< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i]);< / div >
< div class = "line" > < a id = "l00773" name = "l00773" > < / a > < span class = "lineno" > 773< / span > < / div >
< div class = "line" > < a id = "l00774" name = "l00774" > < / a > < span class = "lineno" > 774< / span > < span class = "comment" > // We might change them below.< / span > < / div >
< div class = "line" > < a id = "l00775" name = "l00775" > < / a > < span class = "lineno" > 775< / span > IntegerValue lb = < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [i];< / div >
< div class = "line" > < a id = "l00776" name = "l00776" > < / a > < span class = "lineno" > 776< / span > < span class = "keywordtype" > double< / span > lp_value = lp_values[i];< / div >
< div class = "line" > < a id = "l00777" name = "l00777" > < / a > < span class = "lineno" > 777< / span > < / div >
< div class = "line" > < a id = "l00778" name = "l00778" > < / a > < span class = "lineno" > 778< / span > < span class = "keyword" > const< / span > IntegerValue ub = < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [i];< / div >
< div class = "line" > < a id = "l00779" name = "l00779" > < / a > < span class = "lineno" > 779< / span > < span class = "keyword" > const< / span > IntegerValue bound_diff =< / div >
< div class = "line" > < a id = "l00780" name = "l00780" > < / a > < span class = "lineno" > 780< / span > IntegerValue(< a class = "code hl_function" href = "namespaceoperations__research.html#a4a43d435871f16c321861fa5de32df82" > CapSub< / a > (ub.value(), lb.value()));< / div >
< div class = "line" > < a id = "l00781" name = "l00781" > < / a > < span class = "lineno" > 781< / span > < span class = "comment" > // Note that since we use ToDouble() this code works fine with lb/ub at< / span > < / div >
< div class = "line" > < a id = "l00782" name = "l00782" > < / a > < span class = "lineno" > 782< / span > < span class = "comment" > // min/max integer value.< / span > < / div >
< div class = "line" > < a id = "l00783" name = "l00783" > < / a > < span class = "lineno" > 783< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00784" name = "l00784" > < / a > < span class = "lineno" > 784< / span > < span class = "comment" > // TODO(user): Experiments with different heuristics. Other solver also< / span > < / div >
< div class = "line" > < a id = "l00785" name = "l00785" > < / a > < span class = "lineno" > 785< / span > < span class = "comment" > // seems to try a bunch of possibilities in a " postprocess" phase once< / span > < / div >
< div class = "line" > < a id = "l00786" name = "l00786" > < / a > < span class = "lineno" > 786< / span > < span class = "comment" > // the divisor is chosen. Try that.< / span > < / div >
< div class = "line" > < a id = "l00787" name = "l00787" > < / a > < span class = "lineno" > 787< / span > {< / div >
< div class = "line" > < a id = "l00788" name = "l00788" > < / a > < span class = "lineno" > 788< / span > < span class = "comment" > // when the magnitude of the entry become smaller and smaller we bias< / span > < / div >
< div class = "line" > < a id = "l00789" name = "l00789" > < / a > < span class = "lineno" > 789< / span > < span class = "comment" > // towards a positive coefficient. This is because after rounding this< / span > < / div >
< div class = "line" > < a id = "l00790" name = "l00790" > < / a > < span class = "lineno" > 790< / span > < span class = "comment" > // will likely become zero instead of -divisor and we need the lp value< / span > < / div >
< div class = "line" > < a id = "l00791" name = "l00791" > < / a > < span class = "lineno" > 791< / span > < span class = "comment" > // to be really close to its bound to compensate.< / span > < / div >
< div class = "line" > < a id = "l00792" name = "l00792" > < / a > < span class = "lineno" > 792< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > lb_dist = std::abs(lp_value - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (lb));< / div >
< div class = "line" > < a id = "l00793" name = "l00793" > < / a > < span class = "lineno" > 793< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > ub_dist = std::abs(lp_value - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (ub));< / div >
< div class = "line" > < a id = "l00794" name = "l00794" > < / a > < span class = "lineno" > 794< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > bias =< / div >
< div class = "line" > < a id = "l00795" name = "l00795" > < / a > < span class = "lineno" > 795< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (1.0, 0.1 * < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (max_magnitude) / < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (magnitude));< / div >
< div class = "line" > < a id = "l00796" name = "l00796" > < / a > < span class = "lineno" > 796< / span > < span class = "keywordflow" > if< / span > ((bias * lb_dist > ub_dist & & cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i] < 0) ||< / div >
< div class = "line" > < a id = "l00797" name = "l00797" > < / a > < span class = "lineno" > 797< / span > (lb_dist > bias * ub_dist & & cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i] > 0)) {< / div >
< div class = "line" > < a id = "l00798" name = "l00798" > < / a > < span class = "lineno" > 798< / span > change_sign_at_postprocessing_[i] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00799" name = "l00799" > < / a > < span class = "lineno" > 799< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i] = -cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l00800" name = "l00800" > < / a > < span class = "lineno" > 800< / span > lp_value = -lp_value;< / div >
< div class = "line" > < a id = "l00801" name = "l00801" > < / a > < span class = "lineno" > 801< / span > lb = -ub;< / div >
< div class = "line" > < a id = "l00802" name = "l00802" > < / a > < span class = "lineno" > 802< / span > }< / div >
< div class = "line" > < a id = "l00803" name = "l00803" > < / a > < span class = "lineno" > 803< / span > }< / div >
< div class = "line" > < a id = "l00804" name = "l00804" > < / a > < span class = "lineno" > 804< / span > < / div >
< div class = "line" > < a id = "l00805" name = "l00805" > < / a > < span class = "lineno" > 805< / span > < span class = "comment" > // Always shift to lb.< / span > < / div >
< div class = "line" > < a id = "l00806" name = "l00806" > < / a > < span class = "lineno" > 806< / span > < span class = "comment" > // coeff * X = coeff * (X - shift) + coeff * shift.< / span > < / div >
< div class = "line" > < a id = "l00807" name = "l00807" > < / a > < span class = "lineno" > 807< / span > lp_value -= < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (lb);< / div >
< div class = "line" > < a id = "l00808" name = "l00808" > < / a > < span class = "lineno" > 808< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (-cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i], lb, & cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > )) {< / div >
< div class = "line" > < a id = "l00809" name = "l00809" > < / a > < span class = "lineno" > 809< / span > overflow = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00810" name = "l00810" > < / a > < span class = "lineno" > 810< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l00811" name = "l00811" > < / a > < span class = "lineno" > 811< / span > }< / 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" > // Deal with fixed variable, no need to shift back in this case, we can< / span > < / div >
< div class = "line" > < a id = "l00814" name = "l00814" > < / a > < span class = "lineno" > 814< / span > < span class = "comment" > // just remove the term.< / span > < / div >
< div class = "line" > < a id = "l00815" name = "l00815" > < / a > < span class = "lineno" > 815< / span > < span class = "keywordflow" > if< / span > (bound_diff == 0) {< / div >
< div class = "line" > < a id = "l00816" name = "l00816" > < / a > < span class = "lineno" > 816< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i] = IntegerValue(0);< / div >
< div class = "line" > < a id = "l00817" name = "l00817" > < / a > < span class = "lineno" > 817< / span > lp_value = 0.0;< / div >
< div class = "line" > < a id = "l00818" name = "l00818" > < / a > < span class = "lineno" > 818< / span > }< / div >
< div class = "line" > < a id = "l00819" name = "l00819" > < / a > < span class = "lineno" > 819< / span > < / div >
< div class = "line" > < a id = "l00820" name = "l00820" > < / a > < span class = "lineno" > 820< / span > < span class = "keywordflow" > if< / span > (std::abs(lp_value) > 1e-2) {< / div >
< div class = "line" > < a id = "l00821" name = "l00821" > < / a > < span class = "lineno" > 821< / span > relevant_coeffs_.push_back(cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i]);< / div >
< div class = "line" > < a id = "l00822" name = "l00822" > < / a > < span class = "lineno" > 822< / span > relevant_indices_.push_back(i);< / div >
< div class = "line" > < a id = "l00823" name = "l00823" > < / a > < span class = "lineno" > 823< / span > relevant_lp_values_.push_back(lp_value);< / div >
< div class = "line" > < a id = "l00824" name = "l00824" > < / a > < span class = "lineno" > 824< / span > relevant_bound_diffs_.push_back(bound_diff);< / div >
< div class = "line" > < a id = "l00825" name = "l00825" > < / a > < span class = "lineno" > 825< / span > divisors_.push_back(magnitude);< / div >
< div class = "line" > < a id = "l00826" name = "l00826" > < / a > < span class = "lineno" > 826< / span > }< / div >
< div class = "line" > < a id = "l00827" name = "l00827" > < / a > < span class = "lineno" > 827< / span > }< / div >
< div class = "line" > < a id = "l00828" name = "l00828" > < / a > < span class = "lineno" > 828< / span > < / div >
< div class = "line" > < a id = "l00829" name = "l00829" > < / a > < span class = "lineno" > 829< / span > < span class = "comment" > // TODO(user): Maybe this shouldn' t be called on such constraint.< / span > < / div >
< div class = "line" > < a id = "l00830" name = "l00830" > < / a > < span class = "lineno" > 830< / span > < span class = "keywordflow" > if< / span > (relevant_coeffs_.empty()) {< / div >
< div class = "line" > < a id = "l00831" name = "l00831" > < / a > < span class = "lineno" > 831< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Issue, nothing to cut." < / span > ;< / div >
< div class = "line" > < a id = "l00832" name = "l00832" > < / a > < span class = "lineno" > 832< / span > *cut = < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > (IntegerValue(0), IntegerValue(0));< / div >
< div class = "line" > < a id = "l00833" name = "l00833" > < / a > < span class = "lineno" > 833< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l00834" name = "l00834" > < / a > < span class = "lineno" > 834< / span > }< / div >
< div class = "line" > < a id = "l00835" name = "l00835" > < / a > < span class = "lineno" > 835< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb" > CHECK_NE< / a > (max_magnitude, 0);< / div >
< div class = "line" > < a id = "l00836" name = "l00836" > < / a > < span class = "lineno" > 836< / span > < / div >
< div class = "line" > < a id = "l00837" name = "l00837" > < / a > < span class = "lineno" > 837< / span > < span class = "comment" > // Our heuristic will try to generate a few different cuts, and we will keep< / span > < / div >
< div class = "line" > < a id = "l00838" name = "l00838" > < / a > < span class = "lineno" > 838< / span > < span class = "comment" > // the most violated one scaled by the l2 norm of the relevant position.< / span > < / div >
< div class = "line" > < a id = "l00839" name = "l00839" > < / a > < span class = "lineno" > 839< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00840" name = "l00840" > < / a > < span class = "lineno" > 840< / span > < span class = "comment" > // TODO(user): Experiment for the best value of this initial violation< / span > < / div >
< div class = "line" > < a id = "l00841" name = "l00841" > < / a > < span class = "lineno" > 841< / span > < span class = "comment" > // threshold. Note also that we use the l2 norm on the restricted position< / span > < / div >
< div class = "line" > < a id = "l00842" name = "l00842" > < / a > < span class = "lineno" > 842< / span > < span class = "comment" > // here. Maybe we should change that? On that note, the L2 norm usage seems a< / span > < / div >
< div class = "line" > < a id = "l00843" name = "l00843" > < / a > < span class = "lineno" > 843< / span > < span class = "comment" > // bit weird to me since it grows with the number of term in the cut. And< / span > < / div >
< div class = "line" > < a id = "l00844" name = "l00844" > < / a > < span class = "lineno" > 844< / span > < span class = "comment" > // often, we already have a good cut, and we make it stronger by adding extra< / span > < / div >
< div class = "line" > < a id = "l00845" name = "l00845" > < / a > < span class = "lineno" > 845< / span > < span class = "comment" > // terms that do not change its activity.< / span > < / div >
< div class = "line" > < a id = "l00846" name = "l00846" > < / a > < span class = "lineno" > 846< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00847" name = "l00847" > < / a > < span class = "lineno" > 847< / span > < span class = "comment" > // The discussion above only concern the best_scaled_violation initial value.< / span > < / div >
< div class = "line" > < a id = "l00848" name = "l00848" > < / a > < span class = "lineno" > 848< / span > < span class = "comment" > // The remainder_threshold allows to not consider cuts for which the final< / span > < / div >
< div class = "line" > < a id = "l00849" name = "l00849" > < / a > < span class = "lineno" > 849< / span > < span class = "comment" > // efficacity is clearly lower than 1e-3 (it is a bound, so we could generate< / span > < / div >
< div class = "line" > < a id = "l00850" name = "l00850" > < / a > < span class = "lineno" > 850< / span > < span class = "comment" > // cuts with a lower efficacity than this).< / span > < / div >
< div class = "line" > < a id = "l00851" name = "l00851" > < / a > < span class = "lineno" > 851< / span > < span class = "keywordtype" > double< / span > best_scaled_violation = 0.01;< / div >
< div class = "line" > < a id = "l00852" name = "l00852" > < / a > < span class = "lineno" > 852< / span > < span class = "keyword" > const< / span > IntegerValue remainder_threshold(max_magnitude / 1000);< / div >
< div class = "line" > < a id = "l00853" name = "l00853" > < / a > < span class = "lineno" > 853< / span > < / div >
< div class = "line" > < a id = "l00854" name = "l00854" > < / a > < span class = "lineno" > 854< / span > < span class = "comment" > // The cut-> ub might have grown quite a bit with the bound substitution, so< / span > < / div >
< div class = "line" > < a id = "l00855" name = "l00855" > < / a > < span class = "lineno" > 855< / span > < span class = "comment" > // we need to include it too since we will apply the rounding function on it.< / span > < / div >
< div class = "line" > < a id = "l00856" name = "l00856" > < / a > < span class = "lineno" > 856< / span > max_magnitude = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_magnitude, < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1e30e51173c7e43a8c0b4668d5e3f050" > IntTypeAbs< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ));< / div >
< div class = "line" > < a id = "l00857" name = "l00857" > < / a > < span class = "lineno" > 857< / span > < / div >
< div class = "line" > < a id = "l00858" name = "l00858" > < / a > < span class = "lineno" > 858< / span > < span class = "comment" > // Make sure that when we multiply the rhs or the coefficient by a factor t,< / span > < / div >
< div class = "line" > < a id = "l00859" name = "l00859" > < / a > < span class = "lineno" > 859< / span > < span class = "comment" > // we do not have an integer overflow. Actually, we need a bit more room< / span > < / div >
< div class = "line" > < a id = "l00860" name = "l00860" > < / a > < span class = "lineno" > 860< / span > < span class = "comment" > // because we might round down a value to the next multiple of< / span > < / div >
< div class = "line" > < a id = "l00861" name = "l00861" > < / a > < span class = "lineno" > 861< / span > < span class = "comment" > // max_magnitude.< / span > < / div >
< div class = "line" > < a id = "l00862" name = "l00862" > < / a > < span class = "lineno" > 862< / span > < span class = "keyword" > const< / span > IntegerValue threshold = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > kMaxIntegerValue< / a > / 2;< / div >
< div class = "line" > < a id = "l00863" name = "l00863" > < / a > < span class = "lineno" > 863< / span > < span class = "keywordflow" > if< / span > (overflow || max_magnitude > = threshold) {< / div >
< div class = "line" > < a id = "l00864" name = "l00864" > < / a > < span class = "lineno" > 864< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Issue, overflow." < / span > ;< / div >
< div class = "line" > < a id = "l00865" name = "l00865" > < / a > < span class = "lineno" > 865< / span > *cut = < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > (IntegerValue(0), IntegerValue(0));< / div >
< div class = "line" > < a id = "l00866" name = "l00866" > < / a > < span class = "lineno" > 866< / span > < span class = "keywordflow" > return< / 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 > < span class = "keyword" > const< / span > IntegerValue max_t = threshold / max_magnitude;< / 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 > < span class = "comment" > // There is no point trying twice the same divisor or a divisor that is too< / span > < / div >
< div class = "line" > < a id = "l00871" name = "l00871" > < / a > < span class = "lineno" > 871< / span > < span class = "comment" > // small. Note that we use a higher threshold than the remainder_threshold< / span > < / div >
< div class = "line" > < a id = "l00872" name = "l00872" > < / a > < span class = "lineno" > 872< / span > < span class = "comment" > // because we can boost the remainder thanks to our adjusting heuristic below< / span > < / div >
< div class = "line" > < a id = "l00873" name = "l00873" > < / a > < span class = "lineno" > 873< / span > < span class = "comment" > // and also because this allows to have cuts with a small range of< / span > < / div >
< div class = "line" > < a id = "l00874" name = "l00874" > < / a > < span class = "lineno" > 874< / span > < span class = "comment" > // coefficients.< / span > < / div >
< div class = "line" > < a id = "l00875" name = "l00875" > < / a > < span class = "lineno" > 875< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00876" name = "l00876" > < / a > < span class = "lineno" > 876< / span > < span class = "comment" > // TODO(user): Note that the std::sort() is visible in some cpu profile.< / span > < / div >
< div class = "line" > < a id = "l00877" name = "l00877" > < / a > < span class = "lineno" > 877< / span > {< / div >
< div class = "line" > < a id = "l00878" name = "l00878" > < / a > < span class = "lineno" > 878< / span > < span class = "keywordtype" > int< / span > new_size = 0;< / div >
< div class = "line" > < a id = "l00879" name = "l00879" > < / a > < span class = "lineno" > 879< / span > < span class = "keyword" > const< / span > IntegerValue divisor_threshold = max_magnitude / 10;< / div >
< div class = "line" > < a id = "l00880" name = "l00880" > < / a > < span class = "lineno" > 880< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < divisors_.size(); ++i) {< / div >
< div class = "line" > < a id = "l00881" name = "l00881" > < / a > < span class = "lineno" > 881< / span > < span class = "keywordflow" > if< / span > (divisors_[i] < = divisor_threshold) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00882" name = "l00882" > < / a > < span class = "lineno" > 882< / span > divisors_[new_size++] = divisors_[i];< / div >
< div class = "line" > < a id = "l00883" name = "l00883" > < / a > < span class = "lineno" > 883< / span > }< / div >
< div class = "line" > < a id = "l00884" name = "l00884" > < / a > < span class = "lineno" > 884< / span > divisors_.resize(new_size);< / 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 > < a class = "code hl_function" href = "namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d" > gtl::STLSortAndRemoveDuplicates< / a > (& divisors_, std::greater< IntegerValue> ());< / div >
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< div class = "line" > < a id = "l00887" name = "l00887" > < / a > < span class = "lineno" > 887< / span > < / div >
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< div class = "line" > < a id = "l00888" name = "l00888" > < / a > < span class = "lineno" > 888< / span > < span class = "comment" > // TODO(user): Avoid quadratic algorithm? Note that we are quadratic in< / span > < / div >
< div class = "line" > < a id = "l00889" name = "l00889" > < / a > < span class = "lineno" > 889< / span > < span class = "comment" > // relevant_indices not the full cut-> coeffs.size(), but this is still too< / span > < / div >
< div class = "line" > < a id = "l00890" name = "l00890" > < / a > < span class = "lineno" > 890< / span > < span class = "comment" > // much on some problems.< / span > < / div >
< div class = "line" > < a id = "l00891" name = "l00891" > < / a > < span class = "lineno" > 891< / span > IntegerValue best_divisor(0);< / div >
< div class = "line" > < a id = "l00892" name = "l00892" > < / a > < span class = "lineno" > 892< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerValue divisor : divisors_) {< / div >
< div class = "line" > < a id = "l00893" name = "l00893" > < / a > < span class = "lineno" > 893< / span > < span class = "comment" > // Skip if we don' t have the potential to generate a good enough cut.< / span > < / div >
< div class = "line" > < a id = "l00894" name = "l00894" > < / a > < span class = "lineno" > 894< / span > < span class = "keyword" > const< / span > IntegerValue initial_rhs_remainder =< / div >
< div class = "line" > < a id = "l00895" name = "l00895" > < / a > < span class = "lineno" > 895< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > , divisor) * divisor;< / div >
< div class = "line" > < a id = "l00896" name = "l00896" > < / a > < span class = "lineno" > 896< / span > < span class = "keywordflow" > if< / span > (initial_rhs_remainder < = remainder_threshold) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00897" name = "l00897" > < / a > < span class = "lineno" > 897< / span > < / div >
< div class = "line" > < a id = "l00898" name = "l00898" > < / a > < span class = "lineno" > 898< / span > IntegerValue temp_ub = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ;< / div >
< div class = "line" > < a id = "l00899" name = "l00899" > < / a > < span class = "lineno" > 899< / span > adjusted_coeffs_.clear();< / div >
< div class = "line" > < a id = "l00900" name = "l00900" > < / a > < span class = "lineno" > 900< / span > < / div >
< div class = "line" > < a id = "l00901" name = "l00901" > < / a > < span class = "lineno" > 901< / span > < span class = "comment" > // We will adjust coefficient that are just under an exact multiple of< / span > < / div >
< div class = "line" > < a id = "l00902" name = "l00902" > < / a > < span class = "lineno" > 902< / span > < span class = "comment" > // divisor to an exact multiple. This is meant to get rid of small errors< / span > < / div >
< div class = "line" > < a id = "l00903" name = "l00903" > < / a > < span class = "lineno" > 903< / span > < span class = "comment" > // that appears due to rounding error in our exact computation of the< / span > < / div >
< div class = "line" > < a id = "l00904" name = "l00904" > < / a > < span class = "lineno" > 904< / span > < span class = "comment" > // initial constraint given to this class.< / span > < / div >
< div class = "line" > < a id = "l00905" name = "l00905" > < / a > < span class = "lineno" > 905< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00906" name = "l00906" > < / a > < span class = "lineno" > 906< / span > < span class = "comment" > // Each adjustement will cause the initial_rhs_remainder to increase, and we< / span > < / div >
< div class = "line" > < a id = "l00907" name = "l00907" > < / a > < span class = "lineno" > 907< / span > < span class = "comment" > // do not want to increase it above divisor. Our threshold below guarantees< / span > < / div >
< div class = "line" > < a id = "l00908" name = "l00908" > < / a > < span class = "lineno" > 908< / span > < span class = "comment" > // this. Note that the higher the rhs_remainder becomes, the more the< / span > < / div >
< div class = "line" > < a id = "l00909" name = "l00909" > < / a > < span class = "lineno" > 909< / span > < span class = "comment" > // function f() has a chance to reduce the violation, so it is not always a< / span > < / div >
< div class = "line" > < a id = "l00910" name = "l00910" > < / a > < span class = "lineno" > 910< / span > < span class = "comment" > // good idea to use all the slack we have between initial_rhs_remainder and< / span > < / div >
< div class = "line" > < a id = "l00911" name = "l00911" > < / a > < span class = "lineno" > 911< / span > < span class = "comment" > // divisor.< / span > < / div >
< div class = "line" > < a id = "l00912" name = "l00912" > < / a > < span class = "lineno" > 912< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00913" name = "l00913" > < / a > < span class = "lineno" > 913< / span > < span class = "comment" > // TODO(user): If possible, it might be better to complement these< / span > < / div >
< div class = "line" > < a id = "l00914" name = "l00914" > < / a > < span class = "lineno" > 914< / span > < span class = "comment" > // variables. Even if the adjusted lp_values end up larger, if we loose less< / span > < / div >
< div class = "line" > < a id = "l00915" name = "l00915" > < / a > < span class = "lineno" > 915< / span > < span class = "comment" > // when taking f(), then we will have a better violation.< / span > < / div >
< div class = "line" > < a id = "l00916" name = "l00916" > < / a > < span class = "lineno" > 916< / span > < span class = "keyword" > const< / span > IntegerValue adjust_threshold =< / div >
< div class = "line" > < a id = "l00917" name = "l00917" > < / a > < span class = "lineno" > 917< / span > (divisor - initial_rhs_remainder - 1) / IntegerValue(size);< / div >
< div class = "line" > < a id = "l00918" name = "l00918" > < / a > < span class = "lineno" > 918< / span > < span class = "keywordflow" > if< / span > (adjust_threshold > 0) {< / div >
< div class = "line" > < a id = "l00919" name = "l00919" > < / a > < span class = "lineno" > 919< / span > < span class = "comment" > // Even before we finish the adjust, we can have a lower bound on the< / span > < / div >
< div class = "line" > < a id = "l00920" name = "l00920" > < / a > < span class = "lineno" > 920< / span > < span class = "comment" > // activily loss using this divisor, and so we can abort early. This is< / span > < / div >
< div class = "line" > < a id = "l00921" name = "l00921" > < / a > < span class = "lineno" > 921< / span > < span class = "comment" > // similar to what is done below in the function.< / span > < / div >
< div class = "line" > < a id = "l00922" name = "l00922" > < / a > < span class = "lineno" > 922< / span > < span class = "keywordtype" > bool< / span > early_abort = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00923" name = "l00923" > < / a > < span class = "lineno" > 923< / span > < span class = "keywordtype" > double< / span > loss_lb = 0.0;< / div >
< div class = "line" > < a id = "l00924" name = "l00924" > < / a > < span class = "lineno" > 924< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > threshold = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (initial_rhs_remainder);< / div >
< div class = "line" > < a id = "l00925" name = "l00925" > < / a > < span class = "lineno" > 925< / span > < / div >
< div class = "line" > < a id = "l00926" name = "l00926" > < / a > < span class = "lineno" > 926< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < relevant_coeffs_.size(); ++i) {< / div >
< div class = "line" > < a id = "l00927" name = "l00927" > < / a > < span class = "lineno" > 927< / span > < span class = "comment" > // Compute the difference of coeff with the next multiple of divisor.< / span > < / div >
< div class = "line" > < a id = "l00928" name = "l00928" > < / a > < span class = "lineno" > 928< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = relevant_coeffs_[i];< / div >
< div class = "line" > < a id = "l00929" name = "l00929" > < / a > < span class = "lineno" > 929< / span > < span class = "keyword" > const< / span > IntegerValue remainder =< / div >
< div class = "line" > < a id = "l00930" name = "l00930" > < / a > < span class = "lineno" > 930< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a29b96869d2a821cf1d2e6099e7a0f51b" > CeilRatio< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , divisor) * divisor - < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
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< div class = "line" > < a id = "l00931" name = "l00931" > < / a > < span class = "lineno" > 931< / span > < / div >
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< div class = "line" > < a id = "l00932" name = "l00932" > < / a > < span class = "lineno" > 932< / span > < span class = "keywordflow" > if< / span > (divisor - remainder < = initial_rhs_remainder) {< / div >
< div class = "line" > < a id = "l00933" name = "l00933" > < / a > < span class = "lineno" > 933< / span > < span class = "comment" > // We do not know exactly f() yet, but it will always round to the< / span > < / div >
< div class = "line" > < a id = "l00934" name = "l00934" > < / a > < span class = "lineno" > 934< / span > < span class = "comment" > // floor of the division by divisor in this case.< / span > < / div >
< div class = "line" > < a id = "l00935" name = "l00935" > < / a > < span class = "lineno" > 935< / span > loss_lb += < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (divisor - remainder) * relevant_lp_values_[i];< / div >
< div class = "line" > < a id = "l00936" name = "l00936" > < / a > < span class = "lineno" > 936< / span > < span class = "keywordflow" > if< / span > (loss_lb > = threshold) {< / div >
< div class = "line" > < a id = "l00937" name = "l00937" > < / a > < span class = "lineno" > 937< / span > early_abort = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l00938" name = "l00938" > < / a > < span class = "lineno" > 938< / span > < span class = "keywordflow" > break< / 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 > }< / div >
< div class = "line" > < a id = "l00941" name = "l00941" > < / a > < span class = "lineno" > 941< / span > < / div >
< div class = "line" > < a id = "l00942" name = "l00942" > < / a > < span class = "lineno" > 942< / span > < span class = "comment" > // Adjust coeff of the form k * divisor - epsilon.< / span > < / div >
< div class = "line" > < a id = "l00943" name = "l00943" > < / a > < span class = "lineno" > 943< / span > < span class = "keyword" > const< / span > IntegerValue diff = relevant_bound_diffs_[i];< / div >
< div class = "line" > < a id = "l00944" name = "l00944" > < / a > < span class = "lineno" > 944< / span > < span class = "keywordflow" > if< / span > (remainder > 0 & & remainder < = adjust_threshold & & < / div >
< div class = "line" > < a id = "l00945" name = "l00945" > < / a > < span class = "lineno" > 945< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (diff.value(), remainder.value()) < = adjust_threshold) {< / div >
< div class = "line" > < a id = "l00946" name = "l00946" > < / a > < span class = "lineno" > 946< / span > temp_ub += remainder * diff;< / div >
< div class = "line" > < a id = "l00947" name = "l00947" > < / a > < span class = "lineno" > 947< / span > adjusted_coeffs_.push_back({i, < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > + remainder});< / div >
< div class = "line" > < a id = "l00948" name = "l00948" > < / a > < span class = "lineno" > 948< / span > }< / div >
< div class = "line" > < a id = "l00949" name = "l00949" > < / a > < span class = "lineno" > 949< / span > }< / div >
< div class = "line" > < a id = "l00950" name = "l00950" > < / a > < span class = "lineno" > 950< / span > < / div >
< div class = "line" > < a id = "l00951" name = "l00951" > < / a > < span class = "lineno" > 951< / span > < span class = "keywordflow" > if< / span > (early_abort) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00952" name = "l00952" > < / a > < span class = "lineno" > 952< / span > }< / div >
< div class = "line" > < a id = "l00953" name = "l00953" > < / a > < span class = "lineno" > 953< / span > < / div >
< div class = "line" > < a id = "l00954" name = "l00954" > < / a > < span class = "lineno" > 954< / span > < span class = "comment" > // Create the super-additive function f().< / span > < / div >
< div class = "line" > < a id = "l00955" name = "l00955" > < / a > < span class = "lineno" > 955< / span > < span class = "keyword" > const< / span > IntegerValue rhs_remainder =< / div >
< div class = "line" > < a id = "l00956" name = "l00956" > < / a > < span class = "lineno" > 956< / span > temp_ub - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (temp_ub, divisor) * divisor;< / div >
< div class = "line" > < a id = "l00957" name = "l00957" > < / a > < span class = "lineno" > 957< / span > < span class = "keywordflow" > if< / span > (rhs_remainder == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l00958" name = "l00958" > < / a > < span class = "lineno" > 958< / span > < / div >
< div class = "line" > < a id = "l00959" name = "l00959" > < / a > < span class = "lineno" > 959< / span > < span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > f = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8e30df8580d6914abba28f43b6e4e667" > GetSuperAdditiveRoundingFunction< / a > (< / div >
< div class = "line" > < a id = "l00960" name = "l00960" > < / a > < span class = "lineno" > 960< / span > rhs_remainder, divisor, < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a44bd0a015c444c2e2d58a002a09a1ea5" > GetFactorT< / a > (rhs_remainder, divisor, max_t),< / div >
< div class = "line" > < a id = "l00961" name = "l00961" > < / a > < span class = "lineno" > 961< / span > options.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_rounding_options.html#a01db407e90fac1c31c6705758a057908" > max_scaling< / a > );< / div >
< div class = "line" > < a id = "l00962" name = "l00962" > < / a > < span class = "lineno" > 962< / span > < / div >
< div class = "line" > < a id = "l00963" name = "l00963" > < / a > < span class = "lineno" > 963< / span > < span class = "comment" > // As we round coefficients, we will compute the loss compared to the< / span > < / div >
< div class = "line" > < a id = "l00964" name = "l00964" > < / a > < span class = "lineno" > 964< / span > < span class = "comment" > // current scaled constraint activity. As soon as this loss crosses the< / span > < / div >
< div class = "line" > < a id = "l00965" name = "l00965" > < / a > < span class = "lineno" > 965< / span > < span class = "comment" > // slack, then we known that there is no violation and we can abort early.< / span > < / div >
< div class = "line" > < a id = "l00966" name = "l00966" > < / a > < span class = "lineno" > 966< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l00967" name = "l00967" > < / a > < span class = "lineno" > 967< / span > < span class = "comment" > // TODO(user): modulo the scaling, we could compute the exact threshold< / span > < / div >
< div class = "line" > < a id = "l00968" name = "l00968" > < / a > < span class = "lineno" > 968< / span > < span class = "comment" > // using our current best cut. Note that we also have to account the change< / span > < / div >
< div class = "line" > < a id = "l00969" name = "l00969" > < / a > < span class = "lineno" > 969< / span > < span class = "comment" > // in slack due to the adjust code above.< / span > < / div >
< div class = "line" > < a id = "l00970" name = "l00970" > < / a > < span class = "lineno" > 970< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > scaling = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (f(divisor)) / < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (divisor);< / div >
< div class = "line" > < a id = "l00971" name = "l00971" > < / a > < span class = "lineno" > 971< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > threshold = scaling * < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (rhs_remainder);< / div >
< div class = "line" > < a id = "l00972" name = "l00972" > < / a > < span class = "lineno" > 972< / span > < span class = "keywordtype" > double< / span > loss = 0.0;< / div >
< div class = "line" > < a id = "l00973" name = "l00973" > < / a > < span class = "lineno" > 973< / span > < / div >
< div class = "line" > < a id = "l00974" name = "l00974" > < / a > < span class = "lineno" > 974< / span > < span class = "comment" > // Apply f() to the cut and compute the cut violation. Note that it is< / span > < / div >
< div class = "line" > < a id = "l00975" name = "l00975" > < / a > < span class = "lineno" > 975< / span > < span class = "comment" > // okay to just look at the relevant indices since the other have a lp< / span > < / div >
< div class = "line" > < a id = "l00976" name = "l00976" > < / a > < span class = "lineno" > 976< / span > < span class = "comment" > // value which is almost zero. Doing it like this is faster, and even if< / span > < / div >
< div class = "line" > < a id = "l00977" name = "l00977" > < / a > < span class = "lineno" > 977< / span > < span class = "comment" > // the max_magnitude might be off it should still be relevant enough.< / span > < / div >
< div class = "line" > < a id = "l00978" name = "l00978" > < / a > < span class = "lineno" > 978< / span > < span class = "keywordtype" > double< / span > violation = -< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (f(temp_ub));< / div >
< div class = "line" > < a id = "l00979" name = "l00979" > < / a > < span class = "lineno" > 979< / span > < span class = "keywordtype" > double< / span > < a class = "code hl_variable" href = "sharded__optimization__utils_8cc.html#a2a897122b37c5a906205687aecdb627b" > l2_norm< / a > = 0.0;< / div >
< div class = "line" > < a id = "l00980" name = "l00980" > < / a > < span class = "lineno" > 980< / span > < span class = "keywordtype" > bool< / span > early_abort = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l00981" name = "l00981" > < / a > < span class = "lineno" > 981< / span > < span class = "keywordtype" > int< / span > adjusted_coeffs_index = 0;< / div >
< div class = "line" > < a id = "l00982" name = "l00982" > < / a > < span class = "lineno" > 982< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < relevant_coeffs_.size(); ++i) {< / div >
< div class = "line" > < a id = "l00983" name = "l00983" > < / a > < span class = "lineno" > 983< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = relevant_coeffs_[i];< / div >
< div class = "line" > < a id = "l00984" name = "l00984" > < / a > < span class = "lineno" > 984< / span > < / div >
< div class = "line" > < a id = "l00985" name = "l00985" > < / a > < span class = "lineno" > 985< / span > < span class = "comment" > // Adjust coeff according to our previous computation if needed.< / span > < / div >
< div class = "line" > < a id = "l00986" name = "l00986" > < / a > < span class = "lineno" > 986< / span > < span class = "keywordflow" > if< / span > (adjusted_coeffs_index < adjusted_coeffs_.size() & & < / div >
< div class = "line" > < a id = "l00987" name = "l00987" > < / a > < span class = "lineno" > 987< / span > adjusted_coeffs_[adjusted_coeffs_index].first == i) {< / div >
< div class = "line" > < a id = "l00988" name = "l00988" > < / a > < span class = "lineno" > 988< / span > < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = adjusted_coeffs_[adjusted_coeffs_index].second;< / div >
< div class = "line" > < a id = "l00989" name = "l00989" > < / a > < span class = "lineno" > 989< / span > adjusted_coeffs_index++;< / 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" > 991< / span > < / div >
< div class = "line" > < a id = "l00992" name = "l00992" > < / a > < span class = "lineno" > 992< / 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 = "l00993" name = "l00993" > < / a > < span class = "lineno" > 993< / span > < span class = "keyword" > const< / span > IntegerValue new_coeff = f(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l00994" name = "l00994" > < / a > < span class = "lineno" > 994< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > new_coeff_double = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (new_coeff);< / div >
< div class = "line" > < a id = "l00995" name = "l00995" > < / a > < span class = "lineno" > 995< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > lp_value = relevant_lp_values_[i];< / div >
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< div class = "line" > < a id = "l00996" name = "l00996" > < / a > < span class = "lineno" > 996< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l00997" name = "l00997" > < / a > < span class = "lineno" > 997< / span > < a class = "code hl_variable" href = "sharded__optimization__utils_8cc.html#a2a897122b37c5a906205687aecdb627b" > l2_norm< / a > += new_coeff_double * new_coeff_double;< / div >
< div class = "line" > < a id = "l00998" name = "l00998" > < / a > < span class = "lineno" > 998< / span > violation += new_coeff_double * lp_value;< / div >
< div class = "line" > < a id = "l00999" name = "l00999" > < / a > < span class = "lineno" > 999< / span > loss += (scaling * < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ) - new_coeff_double) * lp_value;< / div >
< div class = "line" > < a id = "l01000" name = "l01000" > < / a > < span class = "lineno" > 1000< / span > < span class = "keywordflow" > if< / span > (loss > = threshold) {< / div >
< div class = "line" > < a id = "l01001" name = "l01001" > < / a > < span class = "lineno" > 1001< / span > early_abort = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01002" name = "l01002" > < / a > < span class = "lineno" > 1002< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01003" name = "l01003" > < / a > < span class = "lineno" > 1003< / span > }< / div >
< div class = "line" > < a id = "l01004" name = "l01004" > < / a > < span class = "lineno" > 1004< / span > }< / div >
< div class = "line" > < a id = "l01005" name = "l01005" > < / a > < span class = "lineno" > 1005< / span > < span class = "keywordflow" > if< / span > (early_abort) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01006" name = "l01006" > < / a > < span class = "lineno" > 1006< / span > < / div >
< div class = "line" > < a id = "l01007" name = "l01007" > < / a > < span class = "lineno" > 1007< / span > < span class = "comment" > // Here we scale by the L2 norm over the " relevant" positions. This seems< / span > < / div >
< div class = "line" > < a id = "l01008" name = "l01008" > < / a > < span class = "lineno" > 1008< / span > < span class = "comment" > // to work slighly better in practice.< / span > < / div >
< div class = "line" > < a id = "l01009" name = "l01009" > < / a > < span class = "lineno" > 1009< / span > violation /= sqrt(< a class = "code hl_variable" href = "sharded__optimization__utils_8cc.html#a2a897122b37c5a906205687aecdb627b" > l2_norm< / a > );< / div >
< div class = "line" > < a id = "l01010" name = "l01010" > < / a > < span class = "lineno" > 1010< / span > < span class = "keywordflow" > if< / span > (violation > best_scaled_violation) {< / div >
< div class = "line" > < a id = "l01011" name = "l01011" > < / a > < span class = "lineno" > 1011< / span > best_scaled_violation = violation;< / div >
< div class = "line" > < a id = "l01012" name = "l01012" > < / a > < span class = "lineno" > 1012< / span > best_divisor = divisor;< / div >
< div class = "line" > < a id = "l01013" name = "l01013" > < / a > < span class = "lineno" > 1013< / span > }< / div >
< div class = "line" > < a id = "l01014" name = "l01014" > < / a > < span class = "lineno" > 1014< / span > }< / div >
< div class = "line" > < a id = "l01015" name = "l01015" > < / a > < span class = "lineno" > 1015< / span > < / div >
< div class = "line" > < a id = "l01016" name = "l01016" > < / a > < span class = "lineno" > 1016< / span > < span class = "keywordflow" > if< / span > (best_divisor == 0) {< / div >
< div class = "line" > < a id = "l01017" name = "l01017" > < / a > < span class = "lineno" > 1017< / span > *cut = < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > (IntegerValue(0), IntegerValue(0));< / div >
< div class = "line" > < a id = "l01018" name = "l01018" > < / a > < span class = "lineno" > 1018< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01019" name = "l01019" > < / a > < span class = "lineno" > 1019< / span > }< / 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 > < span class = "comment" > // Adjust coefficients.< / span > < / div >
< div class = "line" > < a id = "l01022" name = "l01022" > < / a > < span class = "lineno" > 1022< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01023" name = "l01023" > < / a > < span class = "lineno" > 1023< / span > < span class = "comment" > // TODO(user): It might make sense to also adjust the one with a small LP< / span > < / div >
< div class = "line" > < a id = "l01024" name = "l01024" > < / a > < span class = "lineno" > 1024< / span > < span class = "comment" > // value, but then the cut will be slighlty different than the one we computed< / span > < / div >
< div class = "line" > < a id = "l01025" name = "l01025" > < / a > < span class = "lineno" > 1025< / span > < span class = "comment" > // above. Try with and without maybe?< / span > < / div >
< div class = "line" > < a id = "l01026" name = "l01026" > < / a > < span class = "lineno" > 1026< / span > < span class = "keyword" > const< / span > IntegerValue initial_rhs_remainder =< / div >
< div class = "line" > < a id = "l01027" name = "l01027" > < / a > < span class = "lineno" > 1027< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > , best_divisor) * best_divisor;< / div >
< div class = "line" > < a id = "l01028" name = "l01028" > < / a > < span class = "lineno" > 1028< / span > < span class = "keyword" > const< / span > IntegerValue adjust_threshold =< / div >
< div class = "line" > < a id = "l01029" name = "l01029" > < / a > < span class = "lineno" > 1029< / span > (best_divisor - initial_rhs_remainder - 1) / IntegerValue(size);< / div >
< div class = "line" > < a id = "l01030" name = "l01030" > < / a > < span class = "lineno" > 1030< / span > < span class = "keywordflow" > if< / span > (adjust_threshold > 0) {< / div >
< div class = "line" > < a id = "l01031" name = "l01031" > < / a > < span class = "lineno" > 1031< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < relevant_indices_.size(); ++i) {< / div >
< div class = "line" > < a id = "l01032" name = "l01032" > < / a > < span class = "lineno" > 1032< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = relevant_indices_[i];< / div >
< div class = "line" > < a id = "l01033" name = "l01033" > < / a > < span class = "lineno" > 1033< / span > < span class = "keyword" > const< / span > IntegerValue diff = relevant_bound_diffs_[i];< / div >
< div class = "line" > < a id = "l01034" name = "l01034" > < / a > < span class = "lineno" > 1034< / span > < span class = "keywordflow" > if< / span > (diff > adjust_threshold) < span class = "keywordflow" > continue< / 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" > 1036< / span > < span class = "comment" > // Adjust coeff of the form k * best_divisor - epsilon.< / span > < / div >
< div class = "line" > < a id = "l01037" name = "l01037" > < / a > < span class = "lineno" > 1037< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ];< / div >
< div class = "line" > < a id = "l01038" name = "l01038" > < / a > < span class = "lineno" > 1038< / span > < span class = "keyword" > const< / span > IntegerValue remainder =< / div >
< div class = "line" > < a id = "l01039" name = "l01039" > < / a > < span class = "lineno" > 1039< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a29b96869d2a821cf1d2e6099e7a0f51b" > CeilRatio< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , best_divisor) * best_divisor - < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l01040" name = "l01040" > < / a > < span class = "lineno" > 1040< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (diff.value(), remainder.value()) < = adjust_threshold) {< / div >
< div class = "line" > < a id = "l01041" name = "l01041" > < / a > < span class = "lineno" > 1041< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > += remainder * diff;< / div >
< div class = "line" > < a id = "l01042" name = "l01042" > < / a > < span class = "lineno" > 1042< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ] += remainder;< / div >
< div class = "line" > < a id = "l01043" name = "l01043" > < / a > < span class = "lineno" > 1043< / span > }< / 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 > }< / div >
< div class = "line" > < a id = "l01046" name = "l01046" > < / a > < span class = "lineno" > 1046< / span > < / div >
< div class = "line" > < a id = "l01047" name = "l01047" > < / a > < span class = "lineno" > 1047< / span > < span class = "comment" > // Create the super-additive function f().< / span > < / div >
< div class = "line" > < a id = "l01048" name = "l01048" > < / a > < span class = "lineno" > 1048< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01049" name = "l01049" > < / a > < span class = "lineno" > 1049< / span > < span class = "comment" > // TODO(user): Try out different rounding function and keep the best. We can< / span > < / div >
< div class = "line" > < a id = "l01050" name = "l01050" > < / a > < span class = "lineno" > 1050< / span > < span class = "comment" > // change max_t and max_scaling. It might not be easy to choose which cut is< / span > < / div >
< div class = "line" > < a id = "l01051" name = "l01051" > < / a > < span class = "lineno" > 1051< / span > < span class = "comment" > // the best, but we can at least know for sure if one dominate the other< / span > < / div >
< div class = "line" > < a id = "l01052" name = "l01052" > < / a > < span class = "lineno" > 1052< / span > < span class = "comment" > // completely. That is, if for all coeff f(coeff)/f(divisor) is greater than< / span > < / div >
< div class = "line" > < a id = "l01053" name = "l01053" > < / a > < span class = "lineno" > 1053< / span > < span class = "comment" > // or equal to the same value for another function f.< / span > < / div >
< div class = "line" > < a id = "l01054" name = "l01054" > < / a > < span class = "lineno" > 1054< / span > < span class = "keyword" > const< / span > IntegerValue rhs_remainder =< / div >
< div class = "line" > < a id = "l01055" name = "l01055" > < / a > < span class = "lineno" > 1055< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > , best_divisor) * best_divisor;< / div >
< div class = "line" > < a id = "l01056" name = "l01056" > < / a > < span class = "lineno" > 1056< / span > IntegerValue factor_t = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a44bd0a015c444c2e2d58a002a09a1ea5" > GetFactorT< / a > (rhs_remainder, best_divisor, max_t);< / div >
< div class = "line" > < a id = "l01057" name = "l01057" > < / a > < span class = "lineno" > 1057< / span > < span class = "keyword" > auto< / span > f = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8e30df8580d6914abba28f43b6e4e667" > GetSuperAdditiveRoundingFunction< / a > (rhs_remainder, best_divisor,< / div >
< div class = "line" > < a id = "l01058" name = "l01058" > < / a > < span class = "lineno" > 1058< / span > factor_t, options.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_rounding_options.html#a01db407e90fac1c31c6705758a057908" > max_scaling< / a > );< / 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" > 1060< / span > < span class = "comment" > // Look amongst all our possible function f() for one that dominate greedily< / span > < / div >
< div class = "line" > < a id = "l01061" name = "l01061" > < / a > < span class = "lineno" > 1061< / span > < span class = "comment" > // our current best one. Note that we prefer lower scaling factor since that< / span > < / div >
< div class = "line" > < a id = "l01062" name = "l01062" > < / a > < span class = "lineno" > 1062< / span > < span class = "comment" > // result in a cut with lower coefficients.< / span > < / div >
< div class = "line" > < a id = "l01063" name = "l01063" > < / a > < span class = "lineno" > 1063< / span > remainders_.clear();< / div >
< div class = "line" > < a id = "l01064" name = "l01064" > < / a > < span class = "lineno" > 1064< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l01065" name = "l01065" > < / a > < span class = "lineno" > 1065< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l01066" name = "l01066" > < / a > < span class = "lineno" > 1066< / span > < span class = "keyword" > const< / span > IntegerValue r =< / div >
< div class = "line" > < a id = "l01067" name = "l01067" > < / a > < span class = "lineno" > 1067< / span > < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > FloorRatio< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , best_divisor) * best_divisor;< / div >
< div class = "line" > < a id = "l01068" name = "l01068" > < / a > < span class = "lineno" > 1068< / span > < span class = "keywordflow" > if< / span > (r > rhs_remainder) remainders_.push_back(r);< / 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 > < a class = "code hl_function" href = "namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d" > gtl::STLSortAndRemoveDuplicates< / a > (& remainders_);< / div >
< div class = "line" > < a id = "l01071" name = "l01071" > < / a > < span class = "lineno" > 1071< / span > < span class = "keywordflow" > if< / span > (remainders_.size() < = 100) {< / div >
< div class = "line" > < a id = "l01072" name = "l01072" > < / a > < span class = "lineno" > 1072< / span > best_rs_.clear();< / div >
< div class = "line" > < a id = "l01073" name = "l01073" > < / a > < span class = "lineno" > 1073< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerValue r : remainders_) {< / div >
< div class = "line" > < a id = "l01074" name = "l01074" > < / a > < span class = "lineno" > 1074< / span > best_rs_.push_back(f(r));< / 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" > 1076< / span > IntegerValue best_d = f(best_divisor);< / 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 = "comment" > // Note that the complexity seems high 100 * 2 * options.max_scaling, but< / span > < / div >
< div class = "line" > < a id = "l01079" name = "l01079" > < / a > < span class = "lineno" > 1079< / span > < span class = "comment" > // this only run on cuts that are already efficient and the inner loop tend< / span > < / div >
< div class = "line" > < a id = "l01080" name = "l01080" > < / a > < span class = "lineno" > 1080< / span > < span class = "comment" > // to abort quickly. I didn' t see this code in the cpu profile so far.< / span > < / div >
< div class = "line" > < a id = "l01081" name = "l01081" > < / a > < span class = "lineno" > 1081< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerValue t :< / div >
< div class = "line" > < a id = "l01082" name = "l01082" > < / a > < span class = "lineno" > 1082< / span > {IntegerValue(1), < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a44bd0a015c444c2e2d58a002a09a1ea5" > GetFactorT< / a > (rhs_remainder, best_divisor, max_t)}) {< / div >
< div class = "line" > < a id = "l01083" name = "l01083" > < / a > < span class = "lineno" > 1083< / span > < span class = "keywordflow" > for< / span > (IntegerValue s(2); s < = options.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_rounding_options.html#a01db407e90fac1c31c6705758a057908" > max_scaling< / a > ; ++s) {< / div >
< div class = "line" > < a id = "l01084" name = "l01084" > < / a > < span class = "lineno" > 1084< / span > < span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > g =< / div >
< div class = "line" > < a id = "l01085" name = "l01085" > < / a > < span class = "lineno" > 1085< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8e30df8580d6914abba28f43b6e4e667" > GetSuperAdditiveRoundingFunction< / a > (rhs_remainder, best_divisor, t, s);< / div >
< div class = "line" > < a id = "l01086" name = "l01086" > < / a > < span class = "lineno" > 1086< / span > < span class = "keywordtype" > int< / span > num_strictly_better = 0;< / div >
< div class = "line" > < a id = "l01087" name = "l01087" > < / a > < span class = "lineno" > 1087< / span > rs_.clear();< / div >
< div class = "line" > < a id = "l01088" name = "l01088" > < / a > < span class = "lineno" > 1088< / span > < span class = "keyword" > const< / span > IntegerValue d = g(best_divisor);< / div >
< div class = "line" > < a id = "l01089" name = "l01089" > < / a > < span class = "lineno" > 1089< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < best_rs_.size(); ++i) {< / div >
< div class = "line" > < a id = "l01090" name = "l01090" > < / a > < span class = "lineno" > 1090< / span > < span class = "keyword" > const< / span > IntegerValue temp = g(remainders_[i]);< / div >
< div class = "line" > < a id = "l01091" name = "l01091" > < / a > < span class = "lineno" > 1091< / span > < span class = "keywordflow" > if< / span > (temp * best_d < best_rs_[i] * d) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01092" name = "l01092" > < / a > < span class = "lineno" > 1092< / span > < span class = "keywordflow" > if< / span > (temp * best_d > best_rs_[i] * d) num_strictly_better++;< / div >
< div class = "line" > < a id = "l01093" name = "l01093" > < / a > < span class = "lineno" > 1093< / span > rs_.push_back(temp);< / 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" > if< / span > (rs_.size() == best_rs_.size() & & num_strictly_better > 0) {< / div >
< div class = "line" > < a id = "l01096" name = "l01096" > < / a > < span class = "lineno" > 1096< / span > f = g;< / div >
< div class = "line" > < a id = "l01097" name = "l01097" > < / a > < span class = "lineno" > 1097< / span > factor_t = t;< / div >
< div class = "line" > < a id = "l01098" name = "l01098" > < / a > < span class = "lineno" > 1098< / span > best_rs_ = rs_;< / div >
< div class = "line" > < a id = "l01099" name = "l01099" > < / a > < span class = "lineno" > 1099< / span > best_d = d;< / div >
< div class = "line" > < a id = "l01100" name = "l01100" > < / a > < span class = "lineno" > 1100< / span > }< / 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 > < span class = "comment" > // Starts to apply f() to the cut. We only apply it to the rhs here, the< / span > < / div >
< div class = "line" > < a id = "l01106" name = "l01106" > < / a > < span class = "lineno" > 1106< / span > < span class = "comment" > // coefficient will be done after the potential lifting of some Booleans.< / span > < / div >
< div class = "line" > < a id = "l01107" name = "l01107" > < / a > < span class = "lineno" > 1107< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = f(cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > );< / div >
< div class = "line" > < a id = "l01108" name = "l01108" > < / a > < span class = "lineno" > 1108< / span > tmp_terms_.clear();< / div >
< div class = "line" > < a id = "l01109" name = "l01109" > < / a > < span class = "lineno" > 1109< / span > < / div >
< div class = "line" > < a id = "l01110" name = "l01110" > < / a > < span class = "lineno" > 1110< / span > < span class = "comment" > // Lift some implied bounds Booleans. Note that we will add them after< / span > < / div >
< div class = "line" > < a id = "l01111" name = "l01111" > < / a > < span class = "lineno" > 1111< / span > < span class = "comment" > // " size" so they will be ignored in the second loop below.< / span > < / div >
< div class = "line" > < a id = "l01112" name = "l01112" > < / a > < span class = "lineno" > 1112< / span > num_lifted_booleans_ = 0;< / div >
< div class = "line" > < a id = "l01113" name = "l01113" > < / a > < span class = "lineno" > 1113< / span > < span class = "keywordflow" > if< / span > (ib_processor != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01114" name = "l01114" > < / a > < span class = "lineno" > 1114< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l01115" name = "l01115" > < / a > < span class = "lineno" > 1115< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l01116" name = "l01116" > < / a > < span class = "lineno" > 1116< / 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 = "l01117" name = "l01117" > < / a > < span class = "lineno" > 1117< / span > < / div >
< div class = "line" > < a id = "l01118" name = "l01118" > < / a > < span class = "lineno" > 1118< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l01119" name = "l01119" > < / a > < span class = "lineno" > 1119< / span > < span class = "keywordflow" > if< / span > (change_sign_at_postprocessing_[i]) {< / div >
< div class = "line" > < a id = "l01120" name = "l01120" > < / a > < span class = "lineno" > 1120< / span > < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22" > NegationOf< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01121" name = "l01121" > < / a > < span class = "lineno" > 1121< / span > }< / div >
< div class = "line" > < a id = "l01122" name = "l01122" > < / a > < span class = "lineno" > 1122< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01123" name = "l01123" > < / a > < span class = "lineno" > 1123< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html" > ImpliedBoundsProcessor::BestImpliedBoundInfo< / a > info =< / div >
< div class = "line" > < a id = "l01124" name = "l01124" > < / a > < span class = "lineno" > 1124< / span > ib_processor-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#abb0b7cc2e259fc8ebe8fd3dd55816b75" > GetCachedImpliedBoundInfo< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01125" name = "l01125" > < / a > < span class = "lineno" > 1125< / span > < / div >
< div class = "line" > < a id = "l01126" name = "l01126" > < / a > < span class = "lineno" > 1126< / span > < span class = "comment" > // Avoid overflow.< / span > < / 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 = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (< a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (std::abs(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > .value()), factor_t.value()),< / div >
< div class = "line" > < a id = "l01128" name = "l01128" > < / a > < span class = "lineno" > 1128< / span > info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > .value()) ==< / div >
< div class = "line" > < a id = "l01129" name = "l01129" > < / a > < span class = "lineno" > 1129< / 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 = "l01130" name = "l01130" > < / a > < span class = "lineno" > 1130< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01131" name = "l01131" > < / a > < span class = "lineno" > 1131< / span > }< / div >
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< div class = "line" > < a id = "l01132" name = "l01132" > < / a > < span class = "lineno" > 1132< / span > < / div >
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< div class = "line" > < a id = "l01133" name = "l01133" > < / a > < span class = "lineno" > 1133< / span > < span class = "comment" > // Because X = bound_diff * B + S< / span > < / div >
< div class = "line" > < a id = "l01134" name = "l01134" > < / a > < span class = "lineno" > 1134< / span > < span class = "comment" > // We can replace coeff * X by the expression before applying f:< / span > < / div >
< div class = "line" > < a id = "l01135" name = "l01135" > < / a > < span class = "lineno" > 1135< / span > < span class = "comment" > // = f(coeff * bound_diff) * B + f(coeff) * [X - bound_diff * B]< / span > < / div >
< div class = "line" > < a id = "l01136" name = "l01136" > < / a > < span class = "lineno" > 1136< / span > < span class = "comment" > // = f(coeff) * X + (f(coeff * bound_diff) - f(coeff) * bound_diff] B< / span > < / div >
< div class = "line" > < a id = "l01137" name = "l01137" > < / a > < span class = "lineno" > 1137< / span > < span class = "comment" > // So we can " lift" B into the cut.< / span > < / div >
< div class = "line" > < a id = "l01138" name = "l01138" > < / a > < span class = "lineno" > 1138< / span > < span class = "keyword" > const< / span > IntegerValue coeff_b =< / div >
< div class = "line" > < a id = "l01139" name = "l01139" > < / a > < span class = "lineno" > 1139< / span > f(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > ) - f(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ) * info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > ;< / div >
< div class = "line" > < a id = "l01140" name = "l01140" > < / a > < span class = "lineno" > 1140< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9" > CHECK_GE< / a > (coeff_b, 0);< / div >
< div class = "line" > < a id = "l01141" name = "l01141" > < / a > < span class = "lineno" > 1141< / span > < span class = "keywordflow" > if< / span > (coeff_b == 0) < span class = "keywordflow" > continue< / span > ;< / div >
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< div class = "line" > < a id = "l01142" name = "l01142" > < / a > < span class = "lineno" > 1142< / span > < / div >
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< div class = "line" > < a id = "l01143" name = "l01143" > < / a > < span class = "lineno" > 1143< / span > ++num_lifted_booleans_;< / div >
< div class = "line" > < a id = "l01144" name = "l01144" > < / a > < span class = "lineno" > 1144< / span > < span class = "keywordflow" > if< / span > (info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a6d2822d5e07c3716efcdf73a4ae5eafc" > is_positive< / a > ) {< / div >
< div class = "line" > < a id = "l01145" name = "l01145" > < / a > < span class = "lineno" > 1145< / span > tmp_terms_.push_back({info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > bool_var< / a > , coeff_b});< / div >
< div class = "line" > < a id = "l01146" name = "l01146" > < / a > < span class = "lineno" > 1146< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01147" name = "l01147" > < / a > < span class = "lineno" > 1147< / span > tmp_terms_.push_back({info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > bool_var< / a > , -coeff_b});< / div >
< div class = "line" > < a id = "l01148" name = "l01148" > < / a > < span class = "lineno" > 1148< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = < a class = "code hl_function" href = "namespaceoperations__research.html#a111f44b9b9cf67a8e8d83794ac9f5291" > CapAdd< / a > (-coeff_b.value(), cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > .value());< / 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 > }< / div >
< div class = "line" > < a id = "l01151" name = "l01151" > < / a > < span class = "lineno" > 1151< / span > }< / div >
< div class = "line" > < a id = "l01152" name = "l01152" > < / a > < span class = "lineno" > 1152< / span > < / div >
< div class = "line" > < a id = "l01153" name = "l01153" > < / a > < span class = "lineno" > 1153< / span > < span class = "comment" > // Apply f() to the cut.< / span > < / div >
< div class = "line" > < a id = "l01154" name = "l01154" > < / a > < span class = "lineno" > 1154< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01155" name = "l01155" > < / a > < span class = "lineno" > 1155< / span > < span class = "comment" > // Remove the bound shifts so the constraint is expressed in the original< / span > < / div >
< div class = "line" > < a id = "l01156" name = "l01156" > < / a > < span class = "lineno" > 1156< / span > < span class = "comment" > // variables.< / span > < / div >
< div class = "line" > < a id = "l01157" name = "l01157" > < / a > < span class = "lineno" > 1157< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l01158" name = "l01158" > < / a > < span class = "lineno" > 1158< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l01159" name = "l01159" > < / a > < span class = "lineno" > 1159< / 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 = "l01160" name = "l01160" > < / a > < span class = "lineno" > 1160< / span > < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = f(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l01161" name = "l01161" > < / a > < span class = "lineno" > 1161< / 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 = "l01162" name = "l01162" > < / a > < span class = "lineno" > 1162< / span > < span class = "keywordflow" > if< / span > (change_sign_at_postprocessing_[i]) {< / div >
< div class = "line" > < a id = "l01163" name = "l01163" > < / a > < span class = "lineno" > 1163< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , -< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [i], & cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > )) {< / div >
< div class = "line" > < a id = "l01164" name = "l01164" > < / a > < span class = "lineno" > 1164< / span > < span class = "comment" > // Abort with a trivially satisfied cut.< / span > < / div >
< div class = "line" > < a id = "l01165" name = "l01165" > < / a > < span class = "lineno" > 1165< / span > cut-> < a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#aa71d36872f416feaa853788a7a7a7ef8" > Clear< / a > ();< / div >
< div class = "line" > < a id = "l01166" name = "l01166" > < / a > < span class = "lineno" > 1166< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01167" name = "l01167" > < / a > < span class = "lineno" > 1167< / span > }< / div >
< div class = "line" > < a id = "l01168" name = "l01168" > < / a > < span class = "lineno" > 1168< / span > tmp_terms_.push_back({cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i], -< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > });< / div >
< div class = "line" > < a id = "l01169" name = "l01169" > < / a > < span class = "lineno" > 1169< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01170" name = "l01170" > < / a > < span class = "lineno" > 1170< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [i], & cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > )) {< / div >
< div class = "line" > < a id = "l01171" name = "l01171" > < / a > < span class = "lineno" > 1171< / span > < span class = "comment" > // Abort with a trivially satisfied cut.< / span > < / div >
< div class = "line" > < a id = "l01172" name = "l01172" > < / a > < span class = "lineno" > 1172< / span > cut-> < a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#aa71d36872f416feaa853788a7a7a7ef8" > Clear< / a > ();< / div >
< div class = "line" > < a id = "l01173" name = "l01173" > < / a > < span class = "lineno" > 1173< / span > < span class = "keywordflow" > return< / 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 > tmp_terms_.push_back({cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i], < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > });< / div >
< div class = "line" > < a id = "l01176" name = "l01176" > < / a > < span class = "lineno" > 1176< / span > }< / div >
< div class = "line" > < a id = "l01177" name = "l01177" > < / a > < span class = "lineno" > 1177< / 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 > < span class = "comment" > // Basic post-processing.< / span > < / div >
< div class = "line" > < a id = "l01180" name = "l01180" > < / a > < span class = "lineno" > 1180< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a6314c72e08e179c06ce3b76747499b8c" > CleanTermsAndFillConstraint< / a > (& tmp_terms_, cut);< / div >
< div class = "line" > < a id = "l01181" name = "l01181" > < / a > < span class = "lineno" > 1181< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a4393db2c15b2f92d7ef16ce6b38c8150" > RemoveZeroTerms< / a > (cut);< / div >
< div class = "line" > < a id = "l01182" name = "l01182" > < / a > < span class = "lineno" > 1182< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ae3c495e2e05950c578b01976701f9b2a" > DivideByGCD< / a > (cut);< / div >
< div class = "line" > < a id = "l01183" name = "l01183" > < / a > < span class = "lineno" > 1183< / span > }< / div >
< div class = "line" > < a id = "l01184" name = "l01184" > < / a > < span class = "lineno" > 1184< / span > < / div >
< div class = "line" > < a id = "l01185" name = "l01185" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_cover_cut_helper.html#ad86e161bb994fe49fa9c4298ebb5ae2d" > 1185< / a > < / span > < span class = "keywordtype" > bool< / span > < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_cover_cut_helper.html#ad86e161bb994fe49fa9c4298ebb5ae2d" > CoverCutHelper::TrySimpleKnapsack< / a > (< / div >
< div class = "line" > < a id = "l01186" name = "l01186" > < / a > < span class = "lineno" > 1186< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > base_ct, < span class = "keyword" > const< / span > std::vector< double> & lp_values,< / div >
< div class = "line" > < a id = "l01187" name = "l01187" > < / a > < span class = "lineno" > 1187< / span > < span class = "keyword" > const< / span > std::vector< IntegerValue> & < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > ,< / div >
< div class = "line" > < a id = "l01188" name = "l01188" > < / a > < span class = "lineno" > 1188< / span > < span class = "keyword" > const< / span > std::vector< IntegerValue> & < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > ) {< / div >
< div class = "line" > < a id = "l01189" name = "l01189" > < / a > < span class = "lineno" > 1189< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > base_size = lp_values.size();< / div >
< div class = "line" > < a id = "l01190" name = "l01190" > < / a > < span class = "lineno" > 1190< / span > < / div >
< div class = "line" > < a id = "l01191" name = "l01191" > < / a > < span class = "lineno" > 1191< / span > < span class = "comment" > // Fill terms with a rewrite of the base constraint where all coeffs & < / span > < / div >
< div class = "line" > < a id = "l01192" name = "l01192" > < / a > < span class = "lineno" > 1192< / span > < span class = "comment" > // variables are positive by using either (X - LB) or (UB - X) as new< / span > < / div >
< div class = "line" > < a id = "l01193" name = "l01193" > < / a > < span class = "lineno" > 1193< / span > < span class = "comment" > // variables.< / span > < / div >
< div class = "line" > < a id = "l01194" name = "l01194" > < / a > < span class = "lineno" > 1194< / span > terms_.clear();< / div >
< div class = "line" > < a id = "l01195" name = "l01195" > < / a > < span class = "lineno" > 1195< / span > IntegerValue rhs = base_ct.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ;< / div >
< div class = "line" > < a id = "l01196" name = "l01196" > < / a > < span class = "lineno" > 1196< / span > IntegerValue sum_of_diff(0);< / div >
< div class = "line" > < a id = "l01197" name = "l01197" > < / a > < span class = "lineno" > 1197< / span > IntegerValue max_base_magnitude(0);< / div >
< div class = "line" > < a id = "l01198" name = "l01198" > < / a > < span class = "lineno" > 1198< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < base_size; ++i) {< / div >
< div class = "line" > < a id = "l01199" name = "l01199" > < / a > < span class = "lineno" > 1199< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = base_ct.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l01200" name = "l01200" > < / a > < span class = "lineno" > 1200< / span > < span class = "keyword" > const< / span > IntegerValue positive_coeff = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1e30e51173c7e43a8c0b4668d5e3f050" > IntTypeAbs< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l01201" name = "l01201" > < / a > < span class = "lineno" > 1201< / span > max_base_magnitude = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_base_magnitude, positive_coeff);< / div >
< div class = "line" > < a id = "l01202" name = "l01202" > < / a > < span class = "lineno" > 1202< / span > < span class = "keyword" > const< / span > IntegerValue bound_diff = < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [i] - < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [i];< / div >
< div class = "line" > < a id = "l01203" name = "l01203" > < / a > < span class = "lineno" > 1203< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (positive_coeff, bound_diff, & sum_of_diff)) {< / div >
< div class = "line" > < a id = "l01204" name = "l01204" > < / a > < span class = "lineno" > 1204< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
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< div class = "line" > < a id = "l01205" name = "l01205" > < / a > < span class = "lineno" > 1205< / span > }< / div >
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< div class = "line" > < a id = "l01206" name = "l01206" > < / a > < span class = "lineno" > 1206< / span > < span class = "keyword" > const< / span > IntegerValue diff = positive_coeff * bound_diff;< / div >
< div class = "line" > < a id = "l01207" name = "l01207" > < / a > < span class = "lineno" > 1207< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > > 0) {< / div >
< div class = "line" > < a id = "l01208" name = "l01208" > < / a > < span class = "lineno" > 1208< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (-< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [i], & rhs)) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01209" name = "l01209" > < / a > < span class = "lineno" > 1209< / span > terms_.push_back(< / div >
< div class = "line" > < a id = "l01210" name = "l01210" > < / a > < span class = "lineno" > 1210< / span > {i, < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [i]) - lp_values[i], positive_coeff, diff});< / div >
< div class = "line" > < a id = "l01211" name = "l01211" > < / a > < span class = "lineno" > 1211< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01212" name = "l01212" > < / a > < span class = "lineno" > 1212< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (-< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [i], & rhs)) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01213" name = "l01213" > < / a > < span class = "lineno" > 1213< / span > terms_.push_back(< / div >
< div class = "line" > < a id = "l01214" name = "l01214" > < / a > < span class = "lineno" > 1214< / span > {i, lp_values[i] - < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > ToDouble< / a > (< a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [i]), positive_coeff, diff});< / div >
< div class = "line" > < a id = "l01215" name = "l01215" > < / a > < span class = "lineno" > 1215< / span > }< / div >
< div class = "line" > < a id = "l01216" name = "l01216" > < / a > < span class = "lineno" > 1216< / span > }< / div >
< div class = "line" > < a id = "l01217" name = "l01217" > < / a > < span class = "lineno" > 1217< / span > < / div >
< div class = "line" > < a id = "l01218" name = "l01218" > < / a > < span class = "lineno" > 1218< / span > < span class = "comment" > // Try a simple cover heuristic.< / span > < / div >
< div class = "line" > < a id = "l01219" name = "l01219" > < / a > < span class = "lineno" > 1219< / span > < span class = "comment" > // Look for violated CUT of the form: sum (UB - X) or (X - LB) > = 1.< / span > < / div >
< div class = "line" > < a id = "l01220" name = "l01220" > < / a > < span class = "lineno" > 1220< / span > < span class = "keywordtype" > double< / span > activity = 0.0;< / div >
< div class = "line" > < a id = "l01221" name = "l01221" > < / a > < span class = "lineno" > 1221< / span > < span class = "keywordtype" > int< / span > new_size = 0;< / div >
< div class = "line" > < a id = "l01222" name = "l01222" > < / a > < span class = "lineno" > 1222< / span > std::sort(terms_.begin(), terms_.end(), [](< span class = "keyword" > const< / span > Term& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < span class = "keyword" > const< / span > Term& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ) {< / div >
< div class = "line" > < a id = "l01223" name = "l01223" > < / a > < span class = "lineno" > 1223< / span > if (a.dist_to_max_value == b.dist_to_max_value) {< / div >
< div class = "line" > < a id = "l01224" name = "l01224" > < / a > < span class = "lineno" > 1224< / span > < span class = "comment" > // Prefer low coefficients if the distance is the same.< / span > < / div >
< div class = "line" > < a id = "l01225" name = "l01225" > < / a > < span class = "lineno" > 1225< / span > return a.positive_coeff < b.positive_coeff;< / div >
< div class = "line" > < a id = "l01226" name = "l01226" > < / a > < span class = "lineno" > 1226< / span > }< / div >
< div class = "line" > < a id = "l01227" name = "l01227" > < / a > < span class = "lineno" > 1227< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .dist_to_max_value < < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > .dist_to_max_value;< / div >
< div class = "line" > < a id = "l01228" name = "l01228" > < / a > < span class = "lineno" > 1228< / span > });< / div >
< div class = "line" > < a id = "l01229" name = "l01229" > < / a > < span class = "lineno" > 1229< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < terms_.size(); ++i) {< / div >
< div class = "line" > < a id = "l01230" name = "l01230" > < / a > < span class = "lineno" > 1230< / span > < span class = "keyword" > const< / span > Term& term = terms_[i];< / div >
< div class = "line" > < a id = "l01231" name = "l01231" > < / a > < span class = "lineno" > 1231< / span > activity += term.dist_to_max_value;< / div >
< div class = "line" > < a id = "l01232" name = "l01232" > < / a > < span class = "lineno" > 1232< / span > < / div >
< div class = "line" > < a id = "l01233" name = "l01233" > < / a > < span class = "lineno" > 1233< / span > < span class = "comment" > // As an heuristic we select all the term so that the sum of distance< / span > < / div >
< div class = "line" > < a id = "l01234" name = "l01234" > < / a > < span class = "lineno" > 1234< / span > < span class = "comment" > // to the upper bound is < = 1.0. If the corresponding rhs is negative, then< / span > < / div >
< div class = "line" > < a id = "l01235" name = "l01235" > < / a > < span class = "lineno" > 1235< / span > < span class = "comment" > // we will have a cut of violation at least 0.0. Note that this violation< / span > < / div >
< div class = "line" > < a id = "l01236" name = "l01236" > < / a > < span class = "lineno" > 1236< / span > < span class = "comment" > // can be improved by the lifting.< / span > < / div >
< div class = "line" > < a id = "l01237" name = "l01237" > < / a > < span class = "lineno" > 1237< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01238" name = "l01238" > < / a > < span class = "lineno" > 1238< / span > < span class = "comment" > // TODO(user): experiment with different threshold (even greater than one).< / span > < / div >
< div class = "line" > < a id = "l01239" name = "l01239" > < / a > < span class = "lineno" > 1239< / span > < span class = "comment" > // Or come up with an algo that incorporate the lifting into the heuristic.< / span > < / div >
< div class = "line" > < a id = "l01240" name = "l01240" > < / a > < span class = "lineno" > 1240< / span > < span class = "keywordflow" > if< / span > (activity > 1.0) {< / div >
< div class = "line" > < a id = "l01241" name = "l01241" > < / a > < span class = "lineno" > 1241< / span > new_size = i; < span class = "comment" > // before this entry.< / span > < / div >
< div class = "line" > < a id = "l01242" name = "l01242" > < / a > < span class = "lineno" > 1242< / span > < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01243" name = "l01243" > < / a > < span class = "lineno" > 1243< / span > }< / div >
< div class = "line" > < a id = "l01244" name = "l01244" > < / a > < span class = "lineno" > 1244< / span > < / div >
< div class = "line" > < a id = "l01245" name = "l01245" > < / a > < span class = "lineno" > 1245< / span > rhs -= term.diff;< / div >
< div class = "line" > < a id = "l01246" name = "l01246" > < / a > < span class = "lineno" > 1246< / span > }< / div >
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< div class = "line" > < a id = "l01247" name = "l01247" > < / a > < span class = "lineno" > 1247< / span > < / div >
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< div class = "line" > < a id = "l01248" name = "l01248" > < / a > < span class = "lineno" > 1248< / span > < span class = "comment" > // If the rhs is now negative, we have a cut.< / span > < / div >
< div class = "line" > < a id = "l01249" name = "l01249" > < / a > < span class = "lineno" > 1249< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01250" name = "l01250" > < / a > < span class = "lineno" > 1250< / span > < span class = "comment" > // Note(user): past this point, now that a given " base" cover has been chosen,< / span > < / div >
< div class = "line" > < a id = "l01251" name = "l01251" > < / a > < span class = "lineno" > 1251< / span > < span class = "comment" > // we basically compute the cut (of the form sum X < = bound) with the maximum< / span > < / div >
< div class = "line" > < a id = "l01252" name = "l01252" > < / a > < span class = "lineno" > 1252< / span > < span class = "comment" > // possible violation. Note also that we lift as much as possible, so we don' t< / span > < / div >
< div class = "line" > < a id = "l01253" name = "l01253" > < / a > < span class = "lineno" > 1253< / span > < span class = "comment" > // necessarily optimize for the cut efficacity though. But we do get a< / span > < / div >
< div class = "line" > < a id = "l01254" name = "l01254" > < / a > < span class = "lineno" > 1254< / span > < span class = "comment" > // stronger cut.< / span > < / div >
< div class = "line" > < a id = "l01255" name = "l01255" > < / a > < span class = "lineno" > 1255< / span > < span class = "keywordflow" > if< / span > (rhs > = 0) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01256" name = "l01256" > < / a > < span class = "lineno" > 1256< / span > < span class = "keywordflow" > if< / span > (new_size == 0) < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / 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" > // Transform to a minimal cover. We want to greedily remove the largest coeff< / span > < / div >
< div class = "line" > < a id = "l01259" name = "l01259" > < / a > < span class = "lineno" > 1259< / span > < span class = "comment" > // first, so we have more chance for the " lifting" below which can increase< / span > < / div >
< div class = "line" > < a id = "l01260" name = "l01260" > < / a > < span class = "lineno" > 1260< / span > < span class = "comment" > // the cut violation. If the coeff are the same, we prefer to remove high< / span > < / div >
< div class = "line" > < a id = "l01261" name = "l01261" > < / a > < span class = "lineno" > 1261< / span > < span class = "comment" > // distance from upper bound first.< / span > < / div >
< div class = "line" > < a id = "l01262" name = "l01262" > < / a > < span class = "lineno" > 1262< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01263" name = "l01263" > < / a > < span class = "lineno" > 1263< / span > < span class = "comment" > // We compute the cut at the same time.< / span > < / div >
< div class = "line" > < a id = "l01264" name = "l01264" > < / a > < span class = "lineno" > 1264< / span > terms_.resize(new_size);< / div >
< div class = "line" > < a id = "l01265" name = "l01265" > < / a > < span class = "lineno" > 1265< / span > std::sort(terms_.begin(), terms_.end(), [](< span class = "keyword" > const< / span > Term& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > , < span class = "keyword" > const< / span > Term& < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ) {< / div >
< div class = "line" > < a id = "l01266" name = "l01266" > < / a > < span class = "lineno" > 1266< / span > if (a.positive_coeff == b.positive_coeff) {< / div >
< div class = "line" > < a id = "l01267" name = "l01267" > < / a > < span class = "lineno" > 1267< / span > return a.dist_to_max_value > b.dist_to_max_value;< / div >
< div class = "line" > < a id = "l01268" name = "l01268" > < / a > < span class = "lineno" > 1268< / span > }< / div >
< div class = "line" > < a id = "l01269" name = "l01269" > < / a > < span class = "lineno" > 1269< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > .positive_coeff > < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > .positive_coeff;< / 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 > in_cut_.assign(base_ct.vars.size(), < span class = "keyword" > false< / span > );< / div >
< div class = "line" > < a id = "l01272" name = "l01272" > < / a > < span class = "lineno" > 1272< / span > cut_.ClearTerms();< / div >
< div class = "line" > < a id = "l01273" name = "l01273" > < / a > < span class = "lineno" > 1273< / span > cut_.lb = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ;< / div >
< div class = "line" > < a id = "l01274" name = "l01274" > < / a > < span class = "lineno" > 1274< / span > cut_.ub = IntegerValue(-1);< / div >
< div class = "line" > < a id = "l01275" name = "l01275" > < / a > < span class = "lineno" > 1275< / span > IntegerValue max_coeff(0);< / div >
< div class = "line" > < a id = "l01276" name = "l01276" > < / a > < span class = "lineno" > 1276< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > Term term : terms_) {< / div >
< div class = "line" > < a id = "l01277" name = "l01277" > < / a > < span class = "lineno" > 1277< / span > < span class = "keywordflow" > if< / span > (term.diff + rhs < 0) {< / div >
< div class = "line" > < a id = "l01278" name = "l01278" > < / a > < span class = "lineno" > 1278< / span > rhs += term.diff;< / div >
< div class = "line" > < a id = "l01279" name = "l01279" > < / a > < span class = "lineno" > 1279< / span > < span class = "keywordflow" > continue< / span > ;< / div >
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< div class = "line" > < a id = "l01280" name = "l01280" > < / a > < span class = "lineno" > 1280< / span > }< / div >
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< div class = "line" > < a id = "l01281" name = "l01281" > < / a > < span class = "lineno" > 1281< / span > in_cut_[term.index] = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01282" name = "l01282" > < / a > < span class = "lineno" > 1282< / span > max_coeff = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_coeff, term.positive_coeff);< / div >
< div class = "line" > < a id = "l01283" name = "l01283" > < / a > < span class = "lineno" > 1283< / span > cut_.vars.push_back(base_ct.vars[term.index]);< / div >
< div class = "line" > < a id = "l01284" name = "l01284" > < / a > < span class = "lineno" > 1284< / span > < span class = "keywordflow" > if< / span > (base_ct.coeffs[term.index] > 0) {< / div >
< div class = "line" > < a id = "l01285" name = "l01285" > < / a > < span class = "lineno" > 1285< / span > cut_.coeffs.push_back(IntegerValue(1));< / div >
< div class = "line" > < a id = "l01286" name = "l01286" > < / a > < span class = "lineno" > 1286< / span > cut_.ub += < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [term.index];< / div >
< div class = "line" > < a id = "l01287" name = "l01287" > < / a > < span class = "lineno" > 1287< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01288" name = "l01288" > < / a > < span class = "lineno" > 1288< / span > cut_.coeffs.push_back(IntegerValue(-1));< / div >
< div class = "line" > < a id = "l01289" name = "l01289" > < / a > < span class = "lineno" > 1289< / span > cut_.ub -= < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [term.index];< / div >
< div class = "line" > < a id = "l01290" name = "l01290" > < / a > < span class = "lineno" > 1290< / span > }< / div >
< div class = "line" > < a id = "l01291" name = "l01291" > < / a > < span class = "lineno" > 1291< / span > }< / div >
< div class = "line" > < a id = "l01292" name = "l01292" > < / a > < span class = "lineno" > 1292< / span > < / div >
< div class = "line" > < a id = "l01293" name = "l01293" > < / a > < span class = "lineno" > 1293< / span > < span class = "comment" > // In case the max_coeff variable is not binary, it might be possible to< / span > < / div >
< div class = "line" > < a id = "l01294" name = "l01294" > < / a > < span class = "lineno" > 1294< / span > < span class = "comment" > // tighten the cut a bit more.< / span > < / div >
< div class = "line" > < a id = "l01295" name = "l01295" > < / a > < span class = "lineno" > 1295< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01296" name = "l01296" > < / a > < span class = "lineno" > 1296< / span > < span class = "comment" > // Note(user): I never observed this on the miplib so far.< / span > < / div >
< div class = "line" > < a id = "l01297" name = "l01297" > < / a > < span class = "lineno" > 1297< / span > < span class = "keywordflow" > if< / span > (max_coeff == 0) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01298" name = "l01298" > < / a > < span class = "lineno" > 1298< / span > < span class = "keywordflow" > if< / span > (max_coeff < -rhs) {< / div >
< div class = "line" > < a id = "l01299" name = "l01299" > < / a > < span class = "lineno" > 1299< / span > < span class = "keyword" > const< / span > IntegerValue m = < a class = "code hl_function" href = "namespaceoperations__research.html#a1e2ec837105d112356116f6308b73fca" > FloorRatio< / a > (-rhs - 1, max_coeff);< / div >
< div class = "line" > < a id = "l01300" name = "l01300" > < / a > < span class = "lineno" > 1300< / span > rhs += max_coeff * m;< / div >
< div class = "line" > < a id = "l01301" name = "l01301" > < / a > < span class = "lineno" > 1301< / span > cut_.ub -= m;< / div >
< div class = "line" > < a id = "l01302" name = "l01302" > < / a > < span class = "lineno" > 1302< / span > }< / div >
< div class = "line" > < a id = "l01303" name = "l01303" > < / a > < span class = "lineno" > 1303< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82" > CHECK_LT< / a > (rhs, 0);< / 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 > < span class = "comment" > // Lift all at once the variables not used in the cover.< / span > < / div >
< div class = "line" > < a id = "l01306" name = "l01306" > < / a > < span class = "lineno" > 1306< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01307" name = "l01307" > < / a > < span class = "lineno" > 1307< / span > < span class = "comment" > // We have a cut of the form sum_i X_i < = b that we will lift into< / span > < / div >
< div class = "line" > < a id = "l01308" name = "l01308" > < / a > < span class = "lineno" > 1308< / span > < span class = "comment" > // sum_i scaling X_i + sum f(base_coeff_j) X_j < = b * scaling.< / span > < / div >
< div class = "line" > < a id = "l01309" name = "l01309" > < / a > < span class = "lineno" > 1309< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01310" name = "l01310" > < / a > < span class = "lineno" > 1310< / span > < span class = "comment" > // Using the super additivity of f() and how we construct it,< / span > < / div >
< div class = "line" > < a id = "l01311" name = "l01311" > < / a > < span class = "lineno" > 1311< / span > < span class = "comment" > // we know that: sum_j base_coeff_j X_j < = N * max_coeff + (max_coeff - slack)< / span > < / div >
< div class = "line" > < a id = "l01312" name = "l01312" > < / a > < span class = "lineno" > 1312< / span > < span class = "comment" > // implies that: sum_j f(base_coeff_j) X_j < = N * scaling.< / span > < / div >
< div class = "line" > < a id = "l01313" name = "l01313" > < / a > < span class = "lineno" > 1313< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01314" name = "l01314" > < / a > < span class = "lineno" > 1314< / span > < span class = "comment" > // 1/ cut > b -(N+1) => original sum + (N+1) * max_coeff > = rhs + slack< / span > < / div >
< div class = "line" > < a id = "l01315" name = "l01315" > < / a > < span class = "lineno" > 1315< / span > < span class = "comment" > // 2/ rewrite 1/ as : scaling * cut > = scaling * b - scaling * N => ...< / span > < / div >
< div class = "line" > < a id = "l01316" name = "l01316" > < / a > < span class = "lineno" > 1316< / span > < span class = "comment" > // 3/ lift > N * scaling => lift_sum > N * max_coeff + (max_coeff - slack)< / span > < / div >
< div class = "line" > < a id = "l01317" name = "l01317" > < / a > < span class = "lineno" > 1317< / span > < span class = "comment" > // And adding 2/ + 3/ we prove what we want:< / span > < / div >
< div class = "line" > < a id = "l01318" name = "l01318" > < / a > < span class = "lineno" > 1318< / span > < span class = "comment" > // cut * scaling + lift > b * scaling => original_sum + lift_sum > rhs.< / span > < / div >
< div class = "line" > < a id = "l01319" name = "l01319" > < / a > < span class = "lineno" > 1319< / span > < span class = "keyword" > const< / span > IntegerValue slack = -rhs;< / div >
< div class = "line" > < a id = "l01320" name = "l01320" > < / a > < span class = "lineno" > 1320< / span > < span class = "keyword" > const< / span > IntegerValue remainder = max_coeff - slack;< / div >
< div class = "line" > < a id = "l01321" name = "l01321" > < / a > < span class = "lineno" > 1321< / span > max_base_magnitude = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (max_base_magnitude, < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1e30e51173c7e43a8c0b4668d5e3f050" > IntTypeAbs< / a > (cut_.ub));< / div >
< div class = "line" > < a id = "l01322" name = "l01322" > < / a > < span class = "lineno" > 1322< / span > < span class = "keyword" > const< / span > IntegerValue max_scaling(< a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::min< / a > (< / div >
< div class = "line" > < a id = "l01323" name = "l01323" > < / a > < span class = "lineno" > 1323< / span > IntegerValue(60), < a class = "code hl_function" href = "namespaceoperations__research.html#a1e2ec837105d112356116f6308b73fca" > FloorRatio< / a > (< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > kMaxIntegerValue< / a > , max_base_magnitude)));< / div >
< div class = "line" > < a id = "l01324" name = "l01324" > < / a > < span class = "lineno" > 1324< / span > < span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > f = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a8e30df8580d6914abba28f43b6e4e667" > GetSuperAdditiveRoundingFunction< / a > (remainder, max_coeff,< / div >
< div class = "line" > < a id = "l01325" name = "l01325" > < / a > < span class = "lineno" > 1325< / span > IntegerValue(1), max_scaling);< / 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 = "keyword" > const< / span > IntegerValue scaling = f(max_coeff);< / div >
< div class = "line" > < a id = "l01328" name = "l01328" > < / a > < span class = "lineno" > 1328< / span > < span class = "keywordflow" > if< / span > (scaling > 1) {< / div >
< div class = "line" > < a id = "l01329" name = "l01329" > < / a > < span class = "lineno" > 1329< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < cut_.coeffs.size(); ++i) cut_.coeffs[i] *= scaling;< / div >
< div class = "line" > < a id = "l01330" name = "l01330" > < / a > < span class = "lineno" > 1330< / span > cut_.ub *= scaling;< / div >
< div class = "line" > < a id = "l01331" name = "l01331" > < / a > < span class = "lineno" > 1331< / span > }< / div >
< div class = "line" > < a id = "l01332" name = "l01332" > < / a > < span class = "lineno" > 1332< / span > < / div >
< div class = "line" > < a id = "l01333" name = "l01333" > < / a > < span class = "lineno" > 1333< / span > num_lifting_ = 0;< / div >
< div class = "line" > < a id = "l01334" name = "l01334" > < / a > < span class = "lineno" > 1334< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < base_size; ++i) {< / div >
< div class = "line" > < a id = "l01335" name = "l01335" > < / a > < span class = "lineno" > 1335< / span > < span class = "keywordflow" > if< / span > (in_cut_[i]) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01336" name = "l01336" > < / a > < span class = "lineno" > 1336< / span > < span class = "keyword" > const< / span > IntegerValue positive_coeff = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1e30e51173c7e43a8c0b4668d5e3f050" > IntTypeAbs< / a > (base_ct.coeffs[i]);< / div >
< div class = "line" > < a id = "l01337" name = "l01337" > < / a > < span class = "lineno" > 1337< / span > < span class = "keyword" > const< / span > IntegerValue new_coeff = f(positive_coeff);< / div >
< div class = "line" > < a id = "l01338" name = "l01338" > < / a > < span class = "lineno" > 1338< / span > < span class = "keywordflow" > if< / span > (new_coeff == 0) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01339" name = "l01339" > < / a > < span class = "lineno" > 1339< / span > < / div >
< div class = "line" > < a id = "l01340" name = "l01340" > < / a > < span class = "lineno" > 1340< / span > ++num_lifting_;< / div >
< div class = "line" > < a id = "l01341" name = "l01341" > < / a > < span class = "lineno" > 1341< / span > < span class = "keywordflow" > if< / span > (base_ct.coeffs[i] > 0) {< / div >
< div class = "line" > < a id = "l01342" name = "l01342" > < / a > < span class = "lineno" > 1342< / span > < span class = "comment" > // Add new_coeff * (X - LB)< / span > < / div >
< div class = "line" > < a id = "l01343" name = "l01343" > < / a > < span class = "lineno" > 1343< / span > cut_.coeffs.push_back(new_coeff);< / div >
< div class = "line" > < a id = "l01344" name = "l01344" > < / a > < span class = "lineno" > 1344< / span > cut_.vars.push_back(base_ct.vars[i]);< / div >
< div class = "line" > < a id = "l01345" name = "l01345" > < / a > < span class = "lineno" > 1345< / span > cut_.ub += < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > [i] * new_coeff;< / div >
< div class = "line" > < a id = "l01346" name = "l01346" > < / a > < span class = "lineno" > 1346< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01347" name = "l01347" > < / a > < span class = "lineno" > 1347< / span > < span class = "comment" > // Add new_coeff * (UB - X)< / span > < / div >
< div class = "line" > < a id = "l01348" name = "l01348" > < / a > < span class = "lineno" > 1348< / span > cut_.coeffs.push_back(-new_coeff);< / div >
< div class = "line" > < a id = "l01349" name = "l01349" > < / a > < span class = "lineno" > 1349< / span > cut_.vars.push_back(base_ct.vars[i]);< / div >
< div class = "line" > < a id = "l01350" name = "l01350" > < / a > < span class = "lineno" > 1350< / span > cut_.ub -= < a class = "code hl_variable" href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > [i] * new_coeff;< / div >
< div class = "line" > < a id = "l01351" name = "l01351" > < / a > < span class = "lineno" > 1351< / span > }< / div >
< div class = "line" > < a id = "l01352" name = "l01352" > < / a > < span class = "lineno" > 1352< / span > }< / div >
< div class = "line" > < a id = "l01353" name = "l01353" > < / a > < span class = "lineno" > 1353< / span > < / div >
< div class = "line" > < a id = "l01354" name = "l01354" > < / a > < span class = "lineno" > 1354< / span > < span class = "keywordflow" > if< / span > (scaling > 1) < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ae3c495e2e05950c578b01976701f9b2a" > DivideByGCD< / a > (& cut_);< / div >
< div class = "line" > < a id = "l01355" name = "l01355" > < / a > < span class = "lineno" > 1355< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01356" name = "l01356" > < / a > < span class = "lineno" > 1356< / span > }< / div >
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< div class = "line" > < a id = "l01357" name = "l01357" > < / a > < span class = "lineno" > 1357< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01358" name = "l01358" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a86a16fa3180f4ebc8ac36c16a2b49fac" > 1358< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a86a16fa3180f4ebc8ac36c16a2b49fac" > CreatePositiveMultiplicationCutGenerator< / a > (< a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_affine_expression.html" > AffineExpression< / a > z,< / div >
< div class = "line" > < a id = "l01359" name = "l01359" > < / a > < span class = "lineno" > 1359< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_affine_expression.html" > AffineExpression< / a > x,< / div >
< div class = "line" > < a id = "l01360" name = "l01360" > < / a > < span class = "lineno" > 1360< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_affine_expression.html" > AffineExpression< / a > y,< / div >
< div class = "line" > < a id = "l01361" name = "l01361" > < / a > < span class = "lineno" > 1361< / span > < span class = "keywordtype" > int< / span > linearization_level,< / div >
< div class = "line" > < a id = "l01362" name = "l01362" > < / a > < span class = "lineno" > 1362< / span > < 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 = "l01363" name = "l01363" > < / a > < span class = "lineno" > 1363< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > result;< / div >
< div class = "line" > < a id = "l01364" name = "l01364" > < / a > < span class = "lineno" > 1364< / span > < span class = "keywordflow" > if< / span > (z.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > != < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > ) result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(z.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > );< / div >
< div class = "line" > < a id = "l01365" name = "l01365" > < / a > < span class = "lineno" > 1365< / span > < span class = "keywordflow" > if< / span > (x.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > != < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > ) result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(x.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > );< / div >
< div class = "line" > < a id = "l01366" name = "l01366" > < / a > < span class = "lineno" > 1366< / span > < span class = "keywordflow" > if< / span > (y.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > != < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > ) result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(y.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > );< / div >
< div class = "line" > < a id = "l01367" name = "l01367" > < / a > < span class = "lineno" > 1367< / span > < / div >
< div class = "line" > < a id = "l01368" name = "l01368" > < / a > < span class = "lineno" > 1368< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > * < span class = "keyword" > const< / span > integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l01369" name = "l01369" > < / a > < span class = "lineno" > 1369< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_trail.html" > Trail< / a > * 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 = "l01370" name = "l01370" > < / a > < span class = "lineno" > 1370< / span > < / div >
< div class = "line" > < a id = "l01371" name = "l01371" > < / a > < span class = "lineno" > 1371< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > generate_cuts< / a > =< / div >
< div class = "line" > < a id = "l01372" name = "l01372" > < / a > < span class = "lineno" > 1372< / span > [z, x, y, linearization_level, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , trail, integer_trail](< / div >
< div class = "line" > < a id = "l01373" name = "l01373" > < / a > < span class = "lineno" > 1373< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l01374" name = "l01374" > < / a > < span class = "lineno" > 1374< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > LinearConstraintManager< / a > * manager) {< / div >
< div class = "line" > < a id = "l01375" name = "l01375" > < / a > < span class = "lineno" > 1375< / span > < span class = "keywordflow" > if< / span > (trail-> CurrentDecisionLevel() > 0 & & linearization_level == 1) {< / div >
< div class = "line" > < a id = "l01376" name = "l01376" > < / a > < span class = "lineno" > 1376< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01377" name = "l01377" > < / a > < span class = "lineno" > 1377< / span > }< / div >
< div class = "line" > < a id = "l01378" name = "l01378" > < / a > < span class = "lineno" > 1378< / span > < span class = "keyword" > const< / span > int64_t x_lb = integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (x).value();< / div >
< div class = "line" > < a id = "l01379" name = "l01379" > < / a > < span class = "lineno" > 1379< / span > < span class = "keyword" > const< / span > int64_t x_ub = integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (x).value();< / div >
< div class = "line" > < a id = "l01380" name = "l01380" > < / a > < span class = "lineno" > 1380< / span > < span class = "keyword" > const< / span > int64_t y_lb = integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (y).value();< / div >
< div class = "line" > < a id = "l01381" name = "l01381" > < / a > < span class = "lineno" > 1381< / span > < span class = "keyword" > const< / span > int64_t y_ub = integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (y).value();< / div >
< div class = "line" > < a id = "l01382" name = "l01382" > < / a > < span class = "lineno" > 1382< / span > < / div >
< div class = "line" > < a id = "l01383" name = "l01383" > < / a > < span class = "lineno" > 1383< / span > < span class = "comment" > // TODO(user): Compute a better bound (int_max / 4 ?).< / span > < / div >
< div class = "line" > < a id = "l01384" name = "l01384" > < / a > < span class = "lineno" > 1384< / span > < span class = "keyword" > const< / span > int64_t kMaxSafeInteger = (int64_t{1} < < 53) - 1;< / div >
< div class = "line" > < a id = "l01385" name = "l01385" > < / a > < span class = "lineno" > 1385< / span > < / div >
< div class = "line" > < a id = "l01386" name = "l01386" > < / a > < span class = "lineno" > 1386< / span > < span class = "comment" > // Check for overflow with the product of expression bounds and the< / span > < / div >
< div class = "line" > < a id = "l01387" name = "l01387" > < / a > < span class = "lineno" > 1387< / span > < span class = "comment" > // product of one expression bound times the constant part of the other< / span > < / div >
< div class = "line" > < a id = "l01388" name = "l01388" > < / a > < span class = "lineno" > 1388< / span > < span class = "comment" > // expression.< / span > < / div >
< div class = "line" > < a id = "l01389" name = "l01389" > < / a > < span class = "lineno" > 1389< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (< a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (x_ub, y_ub), 2) > = kMaxSafeInteger ||< / div >
< div class = "line" > < a id = "l01390" name = "l01390" > < / a > < span class = "lineno" > 1390< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#a111f44b9b9cf67a8e8d83794ac9f5291" > CapAdd< / a > (< a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (x_ub, y.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#a06a78ca452e0ab05313a836b024352f2" > constant< / a > .value()),< / div >
< div class = "line" > < a id = "l01391" name = "l01391" > < / a > < span class = "lineno" > 1391< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (y_ub, x.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#a06a78ca452e0ab05313a836b024352f2" > constant< / a > .value())) > = kMaxSafeInteger) {< / div >
< div class = "line" > < a id = "l01392" name = "l01392" > < / a > < span class = "lineno" > 1392< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (3) < < < span class = "stringliteral" > " Potential overflow in PositiveMultiplicationCutGenerator" < / span > ;< / div >
< div class = "line" > < a id = "l01393" name = "l01393" > < / a > < span class = "lineno" > 1393< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01394" name = "l01394" > < / a > < span class = "lineno" > 1394< / span > }< / 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 > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > x_lp_value = x.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_affine_expression.html#aa9c149604bc3f558e14c6d233ebc4b19" > LpValue< / a > (lp_values);< / div >
< div class = "line" > < a id = "l01397" name = "l01397" > < / a > < span class = "lineno" > 1397< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > y_lp_value = y.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_affine_expression.html#aa9c149604bc3f558e14c6d233ebc4b19" > LpValue< / a > (lp_values);< / div >
< div class = "line" > < a id = "l01398" name = "l01398" > < / a > < span class = "lineno" > 1398< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > z_lp_value = z.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_affine_expression.html#aa9c149604bc3f558e14c6d233ebc4b19" > LpValue< / a > (lp_values);< / div >
< div class = "line" > < a id = "l01399" name = "l01399" > < / a > < span class = "lineno" > 1399< / span > < / div >
< div class = "line" > < a id = "l01400" name = "l01400" > < / a > < span class = "lineno" > 1400< / span > < span class = "comment" > // TODO(user): As the bounds change monotonically, these cuts< / span > < / div >
< div class = "line" > < a id = "l01401" name = "l01401" > < / a > < span class = "lineno" > 1401< / span > < span class = "comment" > // dominate any previous one. try to keep a reference to the cut and< / span > < / div >
< div class = "line" > < a id = "l01402" name = "l01402" > < / a > < span class = "lineno" > 1402< / span > < span class = "comment" > // replace it. Alternatively, add an API for a level-zero bound change< / span > < / div >
< div class = "line" > < a id = "l01403" name = "l01403" > < / a > < span class = "lineno" > 1403< / span > < span class = "comment" > // callback.< / span > < / div >
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< div class = "line" > < a id = "l01404" name = "l01404" > < / a > < span class = "lineno" > 1404< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01405" name = "l01405" > < / a > < span class = "lineno" > 1405< / span > < span class = "comment" > // Cut -z + x_coeff * x + y_coeff* y < = rhs< / span > < / div >
< div class = "line" > < a id = "l01406" name = "l01406" > < / a > < span class = "lineno" > 1406< / span > < span class = "keyword" > auto< / span > try_add_above_cut =< / div >
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< div class = "line" > < a id = "l01407" name = "l01407" > < / a > < span class = "lineno" > 1407< / span > [manager, z_lp_value, x_lp_value, y_lp_value, x, y, z, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ,< / div >
< div class = "line" > < a id = "l01408" name = "l01408" > < / a > < span class = "lineno" > 1408< / span > & lp_values](int64_t x_coeff, int64_t y_coeff, int64_t rhs) {< / div >
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< div class = "line" > < a id = "l01409" name = "l01409" > < / a > < span class = "lineno" > 1409< / span > < span class = "keywordflow" > if< / span > (-z_lp_value + x_lp_value * x_coeff + y_lp_value * y_coeff > =< / div >
< div class = "line" > < a id = "l01410" name = "l01410" > < / a > < span class = "lineno" > 1410< / span > rhs + kMinCutViolation) {< / div >
< div class = "line" > < a id = "l01411" name = "l01411" > < / a > < span class = "lineno" > 1411< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > LinearConstraintBuilder< / a > cut(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , < span class = "comment" > /*lb=*/< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ,< / div >
< div class = "line" > < a id = "l01412" name = "l01412" > < / a > < span class = "lineno" > 1412< / span > < span class = "comment" > /*ub=*/< / span > IntegerValue(rhs));< / div >
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< div class = "line" > < a id = "l01413" name = "l01413" > < / a > < span class = "lineno" > 1413< / span > cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (z, IntegerValue(-1));< / div >
< div class = "line" > < a id = "l01414" name = "l01414" > < / a > < span class = "lineno" > 1414< / span > < span class = "keywordflow" > if< / span > (x_coeff != 0) cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (x, IntegerValue(x_coeff));< / div >
< div class = "line" > < a id = "l01415" name = "l01415" > < / a > < span class = "lineno" > 1415< / span > < span class = "keywordflow" > if< / span > (y_coeff != 0) cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (y, IntegerValue(y_coeff));< / div >
< div class = "line" > < a id = "l01416" name = "l01416" > < / a > < span class = "lineno" > 1416< / span > manager-> AddCut(cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > Build< / a > (), < span class = "stringliteral" > " PositiveProduct" < / span > , lp_values);< / div >
< div class = "line" > < a id = "l01417" name = "l01417" > < / a > < span class = "lineno" > 1417< / span > }< / div >
< div class = "line" > < a id = "l01418" name = "l01418" > < / a > < span class = "lineno" > 1418< / span > };< / div >
< div class = "line" > < a id = "l01419" name = "l01419" > < / a > < span class = "lineno" > 1419< / span > < / div >
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< div class = "line" > < a id = "l01420" name = "l01420" > < / a > < span class = "lineno" > 1420< / span > < span class = "comment" > // Cut -z + x_coeff * x + y_coeff* y > = rhs< / span > < / div >
< div class = "line" > < a id = "l01421" name = "l01421" > < / a > < span class = "lineno" > 1421< / span > < span class = "keyword" > auto< / span > try_add_below_cut =< / div >
< div class = "line" > < a id = "l01422" name = "l01422" > < / a > < span class = "lineno" > 1422< / span > [manager, z_lp_value, x_lp_value, y_lp_value, x, y, z, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ,< / div >
< div class = "line" > < a id = "l01423" name = "l01423" > < / a > < span class = "lineno" > 1423< / span > & lp_values](int64_t x_coeff, int64_t y_coeff, int64_t rhs) {< / div >
< div class = "line" > < a id = "l01424" name = "l01424" > < / a > < span class = "lineno" > 1424< / span > < span class = "keywordflow" > if< / span > (-z_lp_value + x_lp_value * x_coeff + y_lp_value * y_coeff < =< / div >
< div class = "line" > < a id = "l01425" name = "l01425" > < / a > < span class = "lineno" > 1425< / span > rhs - kMinCutViolation) {< / div >
< div class = "line" > < a id = "l01426" name = "l01426" > < / a > < span class = "lineno" > 1426< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > LinearConstraintBuilder< / a > cut(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , < span class = "comment" > /*lb=*/< / span > IntegerValue(rhs),< / div >
< div class = "line" > < a id = "l01427" name = "l01427" > < / a > < span class = "lineno" > 1427< / span > < span class = "comment" > /*ub=*/< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > kMaxIntegerValue< / a > );< / div >
< div class = "line" > < a id = "l01428" name = "l01428" > < / a > < span class = "lineno" > 1428< / span > cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (z, IntegerValue(-1));< / div >
< div class = "line" > < a id = "l01429" name = "l01429" > < / a > < span class = "lineno" > 1429< / span > < span class = "keywordflow" > if< / span > (x_coeff != 0) cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (x, IntegerValue(x_coeff));< / div >
< div class = "line" > < a id = "l01430" name = "l01430" > < / a > < span class = "lineno" > 1430< / span > < span class = "keywordflow" > if< / span > (y_coeff != 0) cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (y, IntegerValue(y_coeff));< / div >
< div class = "line" > < a id = "l01431" name = "l01431" > < / a > < span class = "lineno" > 1431< / span > manager-> AddCut(cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > Build< / a > (), < span class = "stringliteral" > " PositiveProduct" < / span > , lp_values);< / div >
< div class = "line" > < a id = "l01432" name = "l01432" > < / a > < span class = "lineno" > 1432< / span > }< / div >
< div class = "line" > < a id = "l01433" name = "l01433" > < / a > < span class = "lineno" > 1433< / span > };< / div >
< div class = "line" > < a id = "l01434" name = "l01434" > < / a > < span class = "lineno" > 1434< / span > < / div >
< div class = "line" > < a id = "l01435" name = "l01435" > < / a > < span class = "lineno" > 1435< / span > < span class = "comment" > // McCormick relaxation of bilinear constraints. These 4 cuts are the< / span > < / div >
< div class = "line" > < a id = "l01436" name = "l01436" > < / a > < span class = "lineno" > 1436< / span > < span class = "comment" > // exact facets of the x * y polyhedron for a bounded x and y.< / span > < / div >
< div class = "line" > < a id = "l01437" name = "l01437" > < / a > < span class = "lineno" > 1437< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01438" name = "l01438" > < / a > < span class = "lineno" > 1438< / span > < span class = "comment" > // Each cut correspond to plane that contains two of the line< / span > < / div >
< div class = "line" > < a id = "l01439" name = "l01439" > < / a > < span class = "lineno" > 1439< / span > < span class = "comment" > // (x=x_lb), (x=x_ub), (y=y_lb), (y=y_ub). The easiest to< / span > < / div >
< div class = "line" > < a id = "l01440" name = "l01440" > < / a > < span class = "lineno" > 1440< / span > < span class = "comment" > // understand them is to draw the x*y curves and see the 4< / span > < / div >
< div class = "line" > < a id = "l01441" name = "l01441" > < / a > < span class = "lineno" > 1441< / span > < span class = "comment" > // planes that correspond to the convex hull of the graph.< / span > < / div >
< div class = "line" > < a id = "l01442" name = "l01442" > < / a > < span class = "lineno" > 1442< / span > try_add_above_cut(y_lb, x_lb, x_lb * y_lb);< / div >
< div class = "line" > < a id = "l01443" name = "l01443" > < / a > < span class = "lineno" > 1443< / span > try_add_above_cut(y_ub, x_ub, x_ub * y_ub);< / div >
< div class = "line" > < a id = "l01444" name = "l01444" > < / a > < span class = "lineno" > 1444< / span > try_add_below_cut(y_ub, x_lb, x_lb * y_ub);< / div >
< div class = "line" > < a id = "l01445" name = "l01445" > < / a > < span class = "lineno" > 1445< / span > try_add_below_cut(y_lb, x_ub, x_ub * y_lb);< / div >
< div class = "line" > < a id = "l01446" name = "l01446" > < / a > < span class = "lineno" > 1446< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / 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 > < span class = "keywordflow" > return< / span > result;< / div >
< div class = "line" > < a id = "l01450" name = "l01450" > < / a > < span class = "lineno" > 1450< / span > }< / div >
< div class = "line" > < a id = "l01451" name = "l01451" > < / a > < span class = "lineno" > 1451< / span > < / div >
< div class = "line" > < a id = "l01452" name = "l01452" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a91e92ebb8d6c8bd62ae597625f443427" > 1452< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a91e92ebb8d6c8bd62ae597625f443427" > CreateSquareCutGenerator< / a > (< a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_affine_expression.html" > AffineExpression< / a > y, < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_affine_expression.html" > AffineExpression< / a > x,< / div >
< div class = "line" > < a id = "l01453" name = "l01453" > < / a > < span class = "lineno" > 1453< / span > < span class = "keywordtype" > int< / span > linearization_level, < 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 = "l01454" name = "l01454" > < / a > < span class = "lineno" > 1454< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > result;< / div >
< div class = "line" > < a id = "l01455" name = "l01455" > < / a > < span class = "lineno" > 1455< / span > < span class = "keywordflow" > if< / span > (x.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > != < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > ) result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(x.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > );< / div >
< div class = "line" > < a id = "l01456" name = "l01456" > < / a > < span class = "lineno" > 1456< / span > < span class = "keywordflow" > if< / span > (y.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > != < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > ) result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(y.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > var< / a > );< / div >
< div class = "line" > < a id = "l01457" name = "l01457" > < / a > < span class = "lineno" > 1457< / span > < / div >
< div class = "line" > < a id = "l01458" name = "l01458" > < / a > < span class = "lineno" > 1458< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_trail.html" > Trail< / a > * 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 = "l01459" name = "l01459" > < / a > < span class = "lineno" > 1459< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > * integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l01460" name = "l01460" > < / a > < span class = "lineno" > 1460< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > generate_cuts< / a > =< / div >
< div class = "line" > < a id = "l01461" name = "l01461" > < / a > < span class = "lineno" > 1461< / span > [y, x, linearization_level, trail, integer_trail, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ](< / div >
< div class = "line" > < a id = "l01462" name = "l01462" > < / a > < span class = "lineno" > 1462< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l01463" name = "l01463" > < / a > < span class = "lineno" > 1463< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > LinearConstraintManager< / a > * manager) {< / div >
< div class = "line" > < a id = "l01464" name = "l01464" > < / a > < span class = "lineno" > 1464< / span > < span class = "keywordflow" > if< / span > (trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () > 0 & & linearization_level == 1) {< / div >
< div class = "line" > < a id = "l01465" name = "l01465" > < / a > < span class = "lineno" > 1465< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01466" name = "l01466" > < / a > < span class = "lineno" > 1466< / span > }< / div >
< div class = "line" > < a id = "l01467" name = "l01467" > < / a > < span class = "lineno" > 1467< / span > < span class = "keyword" > const< / span > int64_t x_ub = integer_trail-> LevelZeroUpperBound(x).value();< / div >
< div class = "line" > < a id = "l01468" name = "l01468" > < / a > < span class = "lineno" > 1468< / span > < span class = "keyword" > const< / span > int64_t x_lb = integer_trail-> LevelZeroLowerBound(x).value();< / div >
< div class = "line" > < a id = "l01469" name = "l01469" > < / a > < span class = "lineno" > 1469< / span > < / div >
< div class = "line" > < a id = "l01470" name = "l01470" > < / a > < span class = "lineno" > 1470< / span > < span class = "keywordflow" > if< / span > (x_lb == x_ub) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01471" name = "l01471" > < / a > < span class = "lineno" > 1471< / span > < / div >
< div class = "line" > < a id = "l01472" name = "l01472" > < / a > < span class = "lineno" > 1472< / span > < span class = "comment" > // Check for potential overflows.< / span > < / div >
< div class = "line" > < a id = "l01473" name = "l01473" > < / a > < span class = "lineno" > 1473< / span > < span class = "keywordflow" > if< / span > (x_ub > (int64_t{1} < < 31)) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01474" name = "l01474" > < / a > < span class = "lineno" > 1474< / span > < a class = "code hl_define" href = "base_2logging_8h.html#aae2dc65d9ea248d54bf39daa986dd295" > DCHECK_GE< / a > (x_lb, 0);< / div >
< div class = "line" > < a id = "l01475" name = "l01475" > < / a > < span class = "lineno" > 1475< / span > < / div >
< div class = "line" > < a id = "l01476" name = "l01476" > < / a > < span class = "lineno" > 1476< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > y_lp_value = y.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_affine_expression.html#aa9c149604bc3f558e14c6d233ebc4b19" > LpValue< / a > (lp_values);< / div >
< div class = "line" > < a id = "l01477" name = "l01477" > < / a > < span class = "lineno" > 1477< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > x_lp_value = x.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_affine_expression.html#aa9c149604bc3f558e14c6d233ebc4b19" > LpValue< / a > (lp_values);< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01478" name = "l01478" > < / a > < span class = "lineno" > 1478< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01479" name = "l01479" > < / a > < span class = "lineno" > 1479< / span > < span class = "comment" > // First cut: target should be below the line:< / span > < / div >
< div class = "line" > < a id = "l01480" name = "l01480" > < / a > < span class = "lineno" > 1480< / span > < span class = "comment" > // (x_lb, x_lb ^ 2) to (x_ub, x_ub ^ 2).< / span > < / div >
< div class = "line" > < a id = "l01481" name = "l01481" > < / a > < span class = "lineno" > 1481< / span > < span class = "comment" > // The slope of that line is (ub^2 - lb^2) / (ub - lb) = ub + lb.< / span > < / div >
< div class = "line" > < a id = "l01482" name = "l01482" > < / a > < span class = "lineno" > 1482< / span > < span class = "keyword" > const< / span > int64_t y_lb = x_lb * x_lb;< / div >
< div class = "line" > < a id = "l01483" name = "l01483" > < / a > < span class = "lineno" > 1483< / span > < span class = "keyword" > const< / span > int64_t above_slope = x_ub + x_lb;< / div >
< div class = "line" > < a id = "l01484" name = "l01484" > < / a > < span class = "lineno" > 1484< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > max_lp_y = y_lb + above_slope * (x_lp_value - x_lb);< / div >
< div class = "line" > < a id = "l01485" name = "l01485" > < / a > < span class = "lineno" > 1485< / span > < span class = "keywordflow" > if< / span > (y_lp_value > = max_lp_y + kMinCutViolation) {< / div >
< div class = "line" > < a id = "l01486" name = "l01486" > < / a > < span class = "lineno" > 1486< / span > < span class = "comment" > // cut: y < = (x_lb + x_ub) * x - x_lb * x_ub< / span > < / div >
< div class = "line" > < a id = "l01487" name = "l01487" > < / a > < span class = "lineno" > 1487< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > LinearConstraintBuilder< / a > above_cut(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ,< / div >
< div class = "line" > < a id = "l01488" name = "l01488" > < / a > < span class = "lineno" > 1488< / span > IntegerValue(-x_lb * x_ub));< / div >
< div class = "line" > < a id = "l01489" name = "l01489" > < / a > < span class = "lineno" > 1489< / span > above_cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (y, IntegerValue(1));< / div >
< div class = "line" > < a id = "l01490" name = "l01490" > < / a > < span class = "lineno" > 1490< / span > above_cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (x, IntegerValue(-above_slope));< / div >
< div class = "line" > < a id = "l01491" name = "l01491" > < / a > < span class = "lineno" > 1491< / span > manager-> AddCut(above_cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > Build< / a > (), < span class = "stringliteral" > " SquareUpper" < / span > , lp_values);< / 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 = "comment" > // Second cut: target should be above all the lines< / span > < / div >
< div class = "line" > < a id = "l01495" name = "l01495" > < / a > < span class = "lineno" > 1495< / span > < span class = "comment" > // (value, value ^ 2) to (value + 1, (value + 1) ^ 2)< / span > < / div >
< div class = "line" > < a id = "l01496" name = "l01496" > < / a > < span class = "lineno" > 1496< / span > < span class = "comment" > // The slope of that line is 2 * value + 1< / span > < / div >
< div class = "line" > < a id = "l01497" name = "l01497" > < / a > < span class = "lineno" > 1497< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01498" name = "l01498" > < / a > < span class = "lineno" > 1498< / span > < span class = "comment" > // Note that we only add one of these cuts. The one for x_lp_value in< / span > < / div >
< div class = "line" > < a id = "l01499" name = "l01499" > < / a > < span class = "lineno" > 1499< / span > < span class = "comment" > // [value, value + 1].< / span > < / div >
< div class = "line" > < a id = "l01500" name = "l01500" > < / a > < span class = "lineno" > 1500< / span > < span class = "keyword" > const< / span > int64_t x_floor = < span class = "keyword" > static_cast< < / span > int64_t< span class = "keyword" > > < / span > (std::floor(x_lp_value));< / div >
< div class = "line" > < a id = "l01501" name = "l01501" > < / a > < span class = "lineno" > 1501< / span > < span class = "keyword" > const< / span > int64_t below_slope = 2 * x_floor + 1;< / div >
< div class = "line" > < a id = "l01502" name = "l01502" > < / a > < span class = "lineno" > 1502< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > min_lp_y =< / div >
< div class = "line" > < a id = "l01503" name = "l01503" > < / a > < span class = "lineno" > 1503< / span > below_slope * x_lp_value - x_floor - x_floor * x_floor;< / div >
< div class = "line" > < a id = "l01504" name = "l01504" > < / a > < span class = "lineno" > 1504< / span > < span class = "keywordflow" > if< / span > (min_lp_y > = y_lp_value + kMinCutViolation) {< / div >
< div class = "line" > < a id = "l01505" name = "l01505" > < / a > < span class = "lineno" > 1505< / span > < span class = "comment" > // cut: y > = below_slope * (x - x_floor) + x_floor ^ 2< / span > < / div >
< div class = "line" > < a id = "l01506" name = "l01506" > < / a > < span class = "lineno" > 1506< / span > < span class = "comment" > // : y > = below_slope * x - x_floor ^ 2 - x_floor< / span > < / div >
< div class = "line" > < a id = "l01507" name = "l01507" > < / a > < span class = "lineno" > 1507< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > LinearConstraintBuilder< / a > below_cut(< / div >
< div class = "line" > < a id = "l01508" name = "l01508" > < / a > < span class = "lineno" > 1508< / span > < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , IntegerValue(-x_floor - x_floor * x_floor),< / div >
< div class = "line" > < a id = "l01509" name = "l01509" > < / a > < span class = "lineno" > 1509< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > kMaxIntegerValue< / a > );< / div >
< div class = "line" > < a id = "l01510" name = "l01510" > < / a > < span class = "lineno" > 1510< / span > below_cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (y, IntegerValue(1));< / div >
< div class = "line" > < a id = "l01511" name = "l01511" > < / a > < span class = "lineno" > 1511< / span > below_cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (x, -IntegerValue(below_slope));< / div >
< div class = "line" > < a id = "l01512" name = "l01512" > < / a > < span class = "lineno" > 1512< / span > manager-> AddCut(below_cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > Build< / a > (), < span class = "stringliteral" > " SquareLower" < / span > , lp_values);< / div >
< div class = "line" > < a id = "l01513" name = "l01513" > < / a > < span class = "lineno" > 1513< / span > }< / div >
< div class = "line" > < a id = "l01514" name = "l01514" > < / a > < span class = "lineno" > 1514< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01515" name = "l01515" > < / a > < span class = "lineno" > 1515< / 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 > < span class = "keywordflow" > return< / span > result;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01518" name = "l01518" > < / a > < span class = "lineno" > 1518< / span > }< / div >
< div class = "line" > < a id = "l01519" name = "l01519" > < / a > < span class = "lineno" > 1519< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01520" name = "l01520" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#a7fb8d0b24091252e79aea6e5666f29e8" > 1520< / a > < / span > < span class = "keywordtype" > void< / span > ImpliedBoundsProcessor::ProcessUpperBoundedConstraint(< / div >
< div class = "line" > < a id = "l01521" name = "l01521" > < / a > < span class = "lineno" > 1521< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l01522" name = "l01522" > < / a > < span class = "lineno" > 1522< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > * cut) {< / div >
< div class = "line" > < a id = "l01523" name = "l01523" > < / a > < span class = "lineno" > 1523< / span > ProcessUpperBoundedConstraintWithSlackCreation(< / div >
< div class = "line" > < a id = "l01524" name = "l01524" > < / a > < span class = "lineno" > 1524< / span > < span class = "comment" > /*substitute_only_inner_variables=*/< / span > < span class = "keyword" > false< / span > , IntegerVariable(0), lp_values,< / div >
< div class = "line" > < a id = "l01525" name = "l01525" > < / a > < span class = "lineno" > 1525< / span > cut, < span class = "keyword" > nullptr< / span > );< / div >
< div class = "line" > < a id = "l01526" name = "l01526" > < / a > < span class = "lineno" > 1526< / span > }< / div >
< div class = "line" > < a id = "l01527" name = "l01527" > < / a > < span class = "lineno" > 1527< / span > < / div >
< div class = "line" > < a id = "l01528" name = "l01528" > < / a > < span class = "lineno" > 1528< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html" > ImpliedBoundsProcessor::BestImpliedBoundInfo< / a > < / div >
< div class = "line" > < a id = "l01529" name = "l01529" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#abb0b7cc2e259fc8ebe8fd3dd55816b75" > 1529< / a > < / span > ImpliedBoundsProcessor::GetCachedImpliedBoundInfo(IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) {< / div >
< div class = "line" > < a id = "l01530" name = "l01530" > < / a > < span class = "lineno" > 1530< / span > < span class = "keyword" > auto< / span > it = cache_.find(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01531" name = "l01531" > < / a > < span class = "lineno" > 1531< / span > < span class = "keywordflow" > if< / span > (it != cache_.end()) < span class = "keywordflow" > return< / span > it-> second;< / div >
< div class = "line" > < a id = "l01532" name = "l01532" > < / a > < span class = "lineno" > 1532< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html" > BestImpliedBoundInfo< / a > ();< / div >
< div class = "line" > < a id = "l01533" name = "l01533" > < / a > < span class = "lineno" > 1533< / span > }< / div >
< div class = "line" > < a id = "l01534" name = "l01534" > < / a > < span class = "lineno" > 1534< / span > < / div >
< div class = "line" > < a id = "l01535" name = "l01535" > < / a > < span class = "lineno" > 1535< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html" > ImpliedBoundsProcessor::BestImpliedBoundInfo< / a > < / div >
< div class = "line" > < a id = "l01536" name = "l01536" > < / a > < span class = "lineno" > 1536< / span > ImpliedBoundsProcessor::ComputeBestImpliedBound(< / div >
< div class = "line" > < a id = "l01537" name = "l01537" > < / a > < span class = "lineno" > 1537< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ,< / div >
< div class = "line" > < a id = "l01538" name = "l01538" > < / a > < span class = "lineno" > 1538< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values) {< / div >
< div class = "line" > < a id = "l01539" name = "l01539" > < / a > < span class = "lineno" > 1539< / span > < span class = "keyword" > auto< / span > it = cache_.find(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01540" name = "l01540" > < / a > < span class = "lineno" > 1540< / span > < span class = "keywordflow" > if< / span > (it != cache_.end()) < span class = "keywordflow" > return< / span > it-> second;< / div >
< div class = "line" > < a id = "l01541" name = "l01541" > < / a > < span class = "lineno" > 1541< / span > BestImpliedBoundInfo result;< / div >
< div class = "line" > < a id = "l01542" name = "l01542" > < / a > < span class = "lineno" > 1542< / span > < span class = "keyword" > const< / span > IntegerValue lb = integer_trail_-> LevelZeroLowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01543" name = "l01543" > < / a > < span class = "lineno" > 1543< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_implied_bound_entry.html" > ImpliedBoundEntry< / a > & entry :< / div >
< div class = "line" > < a id = "l01544" name = "l01544" > < / a > < span class = "lineno" > 1544< / span > implied_bounds_-> GetImpliedBounds(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > )) {< / div >
< div class = "line" > < a id = "l01545" name = "l01545" > < / a > < span class = "lineno" > 1545< / span > < span class = "comment" > // Only process entries with a Boolean variable currently part of the LP< / span > < / div >
< div class = "line" > < a id = "l01546" name = "l01546" > < / a > < span class = "lineno" > 1546< / span > < span class = "comment" > // we are considering for this cut.< / span > < / div >
< div class = "line" > < a id = "l01547" name = "l01547" > < / a > < span class = "lineno" > 1547< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01548" name = "l01548" > < / a > < span class = "lineno" > 1548< / span > < span class = "comment" > // TODO(user): the more we use cuts, the less it make sense to have a< / span > < / div >
< div class = "line" > < a id = "l01549" name = "l01549" > < / a > < span class = "lineno" > 1549< / span > < span class = "comment" > // lot of small independent LPs.< / span > < / div >
< div class = "line" > < a id = "l01550" name = "l01550" > < / a > < span class = "lineno" > 1550< / span > < span class = "keywordflow" > if< / span > (!lp_vars_.contains(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a7f1ac774d4646a83631f8117f4ea03f5" > PositiveVariable< / a > (entry.literal_view))) {< / div >
< div class = "line" > < a id = "l01551" name = "l01551" > < / a > < span class = "lineno" > 1551< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01552" name = "l01552" > < / a > < span class = "lineno" > 1552< / span > }< / div >
< div class = "line" > < a id = "l01553" name = "l01553" > < / a > < span class = "lineno" > 1553< / span > < / div >
< div class = "line" > < a id = "l01554" name = "l01554" > < / a > < span class = "lineno" > 1554< / span > < span class = "comment" > // The equation is X = lb + diff * Bool + Slack where Bool is in [0, 1]< / span > < / div >
< div class = "line" > < a id = "l01555" name = "l01555" > < / a > < span class = "lineno" > 1555< / span > < span class = "comment" > // and slack in [0, ub - lb].< / span > < / div >
< div class = "line" > < a id = "l01556" name = "l01556" > < / a > < span class = "lineno" > 1556< / span > < span class = "keyword" > const< / span > IntegerValue diff = entry.lower_bound - lb;< / div >
< div class = "line" > < a id = "l01557" name = "l01557" > < / a > < span class = "lineno" > 1557< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9" > CHECK_GE< / a > (diff, 0);< / div >
< div class = "line" > < a id = "l01558" name = "l01558" > < / a > < span class = "lineno" > 1558< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > bool_lp_value = entry.is_positive< / div >
< div class = "line" > < a id = "l01559" name = "l01559" > < / a > < span class = "lineno" > 1559< / span > ? lp_values[entry.literal_view]< / div >
< div class = "line" > < a id = "l01560" name = "l01560" > < / a > < span class = "lineno" > 1560< / span > : 1.0 - lp_values[entry.literal_view];< / 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 > slack_lp_value =< / div >
< div class = "line" > < a id = "l01562" name = "l01562" > < / a > < span class = "lineno" > 1562< / span > lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] - < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (lb) - bool_lp_value * < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (diff);< / div >
< div class = "line" > < a id = "l01563" name = "l01563" > < / a > < span class = "lineno" > 1563< / span > < / div >
< div class = "line" > < a id = "l01564" name = "l01564" > < / a > < span class = "lineno" > 1564< / span > < span class = "comment" > // If the implied bound equation is not respected, we just add it< / span > < / div >
< div class = "line" > < a id = "l01565" name = "l01565" > < / a > < span class = "lineno" > 1565< / span > < span class = "comment" > // to implied_bound_cuts, and skip the entry for now.< / span > < / div >
< div class = "line" > < a id = "l01566" name = "l01566" > < / a > < span class = "lineno" > 1566< / span > < span class = "keywordflow" > if< / span > (slack_lp_value < -1e-4) {< / div >
< div class = "line" > < a id = "l01567" name = "l01567" > < / a > < span class = "lineno" > 1567< / span > LinearConstraint ib_cut;< / div >
< div class = "line" > < a id = "l01568" name = "l01568" > < / a > < span class = "lineno" > 1568< / span > ib_cut.lb = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ;< / div >
< div class = "line" > < a id = "l01569" name = "l01569" > < / a > < span class = "lineno" > 1569< / span > std::vector< std::pair< IntegerVariable, IntegerValue> > terms;< / div >
< div class = "line" > < a id = "l01570" name = "l01570" > < / a > < span class = "lineno" > 1570< / span > < span class = "keywordflow" > if< / span > (entry.is_positive) {< / div >
< div class = "line" > < a id = "l01571" name = "l01571" > < / a > < span class = "lineno" > 1571< / span > < span class = "comment" > // X > = Indicator * (bound - lb) + lb< / span > < / div >
< div class = "line" > < a id = "l01572" name = "l01572" > < / a > < span class = "lineno" > 1572< / span > terms.push_back({entry.literal_view, diff});< / div >
< div class = "line" > < a id = "l01573" name = "l01573" > < / a > < span class = "lineno" > 1573< / span > terms.push_back({< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , IntegerValue(-1)});< / div >
< div class = "line" > < a id = "l01574" name = "l01574" > < / a > < span class = "lineno" > 1574< / span > ib_cut.ub = -lb;< / div >
< div class = "line" > < a id = "l01575" name = "l01575" > < / a > < span class = "lineno" > 1575< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01576" name = "l01576" > < / a > < span class = "lineno" > 1576< / span > < span class = "comment" > // X > = -Indicator * (bound - lb) + bound< / span > < / div >
< div class = "line" > < a id = "l01577" name = "l01577" > < / a > < span class = "lineno" > 1577< / span > terms.push_back({entry.literal_view, -diff});< / div >
< div class = "line" > < a id = "l01578" name = "l01578" > < / a > < span class = "lineno" > 1578< / span > terms.push_back({< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , IntegerValue(-1)});< / div >
< div class = "line" > < a id = "l01579" name = "l01579" > < / a > < span class = "lineno" > 1579< / span > ib_cut.ub = -entry.lower_bound;< / div >
< div class = "line" > < a id = "l01580" name = "l01580" > < / a > < span class = "lineno" > 1580< / span > }< / div >
< div class = "line" > < a id = "l01581" name = "l01581" > < / a > < span class = "lineno" > 1581< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a6314c72e08e179c06ce3b76747499b8c" > CleanTermsAndFillConstraint< / a > (& terms, & ib_cut);< / div >
< div class = "line" > < a id = "l01582" name = "l01582" > < / a > < span class = "lineno" > 1582< / span > ib_cut_pool_.AddCut(std::move(ib_cut), < span class = "stringliteral" > " IB" < / span > , lp_values);< / div >
< div class = "line" > < a id = "l01583" name = "l01583" > < / a > < span class = "lineno" > 1583< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01584" name = "l01584" > < / a > < span class = "lineno" > 1584< / span > }< / div >
< div class = "line" > < a id = "l01585" name = "l01585" > < / a > < span class = "lineno" > 1585< / span > < / div >
< div class = "line" > < a id = "l01586" name = "l01586" > < / a > < span class = "lineno" > 1586< / span > < span class = "comment" > // We look for tight implied bounds, and amongst the tightest one, we< / span > < / div >
< div class = "line" > < a id = "l01587" name = "l01587" > < / a > < span class = "lineno" > 1587< / span > < span class = "comment" > // prefer larger coefficient in front of the Boolean.< / span > < / div >
< div class = "line" > < a id = "l01588" name = "l01588" > < / a > < span class = "lineno" > 1588< / span > < span class = "keywordflow" > if< / span > (slack_lp_value + 1e-4 < result.slack_lp_value ||< / div >
< div class = "line" > < a id = "l01589" name = "l01589" > < / a > < span class = "lineno" > 1589< / span > (slack_lp_value < result.slack_lp_value + 1e-4 & & < / div >
< div class = "line" > < a id = "l01590" name = "l01590" > < / a > < span class = "lineno" > 1590< / span > diff > result.bound_diff)) {< / div >
< div class = "line" > < a id = "l01591" name = "l01591" > < / a > < span class = "lineno" > 1591< / span > result.bool_lp_value = bool_lp_value;< / div >
< div class = "line" > < a id = "l01592" name = "l01592" > < / a > < span class = "lineno" > 1592< / span > result.slack_lp_value = slack_lp_value;< / div >
< div class = "line" > < a id = "l01593" name = "l01593" > < / a > < span class = "lineno" > 1593< / span > < / div >
< div class = "line" > < a id = "l01594" name = "l01594" > < / a > < span class = "lineno" > 1594< / span > result.bound_diff = diff;< / div >
< div class = "line" > < a id = "l01595" name = "l01595" > < / a > < span class = "lineno" > 1595< / span > result.is_positive = entry.is_positive;< / div >
< div class = "line" > < a id = "l01596" name = "l01596" > < / a > < span class = "lineno" > 1596< / span > result.bool_var = entry.literal_view;< / div >
< div class = "line" > < a id = "l01597" name = "l01597" > < / a > < span class = "lineno" > 1597< / span > }< / div >
< div class = "line" > < a id = "l01598" name = "l01598" > < / a > < span class = "lineno" > 1598< / span > }< / div >
< div class = "line" > < a id = "l01599" name = "l01599" > < / a > < span class = "lineno" > 1599< / span > cache_[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] = result;< / div >
< div class = "line" > < a id = "l01600" name = "l01600" > < / a > < span class = "lineno" > 1600< / span > < span class = "keywordflow" > return< / span > result;< / div >
< div class = "line" > < a id = "l01601" name = "l01601" > < / a > < span class = "lineno" > 1601< / span > }< / div >
< div class = "line" > < a id = "l01602" name = "l01602" > < / a > < span class = "lineno" > 1602< / span > < / div >
< div class = "line" > < a id = "l01603" name = "l01603" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#ab354ebe396f7f5ad0c79ff2a928d9a40" > 1603< / a > < / span > < span class = "keywordtype" > void< / span > ImpliedBoundsProcessor::RecomputeCacheAndSeparateSomeImpliedBoundCuts(< / div >
< div class = "line" > < a id = "l01604" name = "l01604" > < / a > < span class = "lineno" > 1604< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values) {< / div >
< div class = "line" > < a id = "l01605" name = "l01605" > < / a > < span class = "lineno" > 1605< / span > cache_.clear();< / div >
< div class = "line" > < a id = "l01606" name = "l01606" > < / a > < span class = "lineno" > 1606< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > :< / div >
< div class = "line" > < a id = "l01607" name = "l01607" > < / a > < span class = "lineno" > 1607< / span > implied_bounds_-> VariablesWithImpliedBounds()) {< / div >
< div class = "line" > < a id = "l01608" name = "l01608" > < / a > < span class = "lineno" > 1608< / span > < span class = "keywordflow" > if< / span > (!lp_vars_.contains(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a7f1ac774d4646a83631f8117f4ea03f5" > PositiveVariable< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ))) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01609" name = "l01609" > < / a > < span class = "lineno" > 1609< / span > ComputeBestImpliedBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , lp_values);< / div >
< div class = "line" > < a id = "l01610" name = "l01610" > < / a > < span class = "lineno" > 1610< / span > }< / div >
< div class = "line" > < a id = "l01611" name = "l01611" > < / a > < span class = "lineno" > 1611< / span > }< / div >
< div class = "line" > < a id = "l01612" name = "l01612" > < / a > < span class = "lineno" > 1612< / span > < / div >
< div class = "line" > < a id = "l01613" name = "l01613" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#a135d2e8757ef674942be0b1d6f46f75b" > 1613< / a > < / span > < span class = "keywordtype" > void< / span > ImpliedBoundsProcessor::ProcessUpperBoundedConstraintWithSlackCreation(< / div >
< div class = "line" > < a id = "l01614" name = "l01614" > < / a > < span class = "lineno" > 1614< / span > < span class = "keywordtype" > bool< / span > substitute_only_inner_variables, IntegerVariable first_slack,< / div >
< div class = "line" > < a id = "l01615" name = "l01615" > < / a > < span class = "lineno" > 1615< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l01616" name = "l01616" > < / a > < span class = "lineno" > 1616< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > * cut, std::vector< SlackInfo> * slack_infos) {< / div >
< div class = "line" > < a id = "l01617" name = "l01617" > < / a > < span class = "lineno" > 1617< / span > < span class = "keywordflow" > if< / span > (cache_.empty()) < span class = "keywordflow" > return< / span > ; < span class = "comment" > // Nothing to do.< / span > < / div >
< div class = "line" > < a id = "l01618" name = "l01618" > < / a > < span class = "lineno" > 1618< / span > tmp_terms_.clear();< / div >
< div class = "line" > < a id = "l01619" name = "l01619" > < / a > < span class = "lineno" > 1619< / span > IntegerValue new_ub = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ;< / div >
< div class = "line" > < a id = "l01620" name = "l01620" > < / a > < span class = "lineno" > 1620< / span > < span class = "keywordtype" > bool< / span > changed = < span class = "keyword" > false< / span > ;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01621" name = "l01621" > < / a > < span class = "lineno" > 1621< / span > < / div >
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< div class = "line" > < a id = "l01622" name = "l01622" > < / a > < span class = "lineno" > 1622< / span > < span class = "comment" > // TODO(user): we could relax a bit this test.< / span > < / div >
< div class = "line" > < a id = "l01623" name = "l01623" > < / a > < span class = "lineno" > 1623< / span > int64_t overflow_detection = 0;< / div >
< div class = "line" > < a id = "l01624" name = "l01624" > < / a > < span class = "lineno" > 1624< / span > < / div >
< div class = "line" > < a id = "l01625" name = "l01625" > < / a > < span class = "lineno" > 1625< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > size = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size();< / div >
< div class = "line" > < a id = "l01626" name = "l01626" > < / a > < span class = "lineno" > 1626< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < size; ++i) {< / div >
< div class = "line" > < a id = "l01627" name = "l01627" > < / a > < span class = "lineno" > 1627< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i];< / div >
< div class = "line" > < a id = "l01628" name = "l01628" > < / a > < span class = "lineno" > 1628< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l01629" name = "l01629" > < / a > < span class = "lineno" > 1629< / span > < / div >
< div class = "line" > < a id = "l01630" name = "l01630" > < / a > < span class = "lineno" > 1630< / span > < span class = "comment" > // Starts by positive coefficient.< / span > < / div >
< div class = "line" > < a id = "l01631" name = "l01631" > < / a > < span class = "lineno" > 1631< / span > < span class = "comment" > // TODO(user): Not clear this is best.< / span > < / div >
< div class = "line" > < a id = "l01632" name = "l01632" > < / a > < span class = "lineno" > 1632< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > < 0) {< / div >
< div class = "line" > < a id = "l01633" name = "l01633" > < / a > < span class = "lineno" > 1633< / span > < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = -< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l01634" name = "l01634" > < / a > < span class = "lineno" > 1634< / span > < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22" > NegationOf< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / 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 = "comment" > // Find the best implied bound to use.< / span > < / div >
< div class = "line" > < a id = "l01638" name = "l01638" > < / a > < span class = "lineno" > 1638< / span > < span class = "comment" > // TODO(user): We could also use implied upper bound, that is try with< / span > < / div >
< div class = "line" > < a id = "l01639" name = "l01639" > < / a > < span class = "lineno" > 1639< / span > < span class = "comment" > // NegationOf(var).< / span > < / div >
< div class = "line" > < a id = "l01640" name = "l01640" > < / a > < span class = "lineno" > 1640< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html" > BestImpliedBoundInfo< / a > info = GetCachedImpliedBoundInfo(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01641" name = "l01641" > < / a > < span class = "lineno" > 1641< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > old_size = tmp_terms_.size();< / div >
< div class = "line" > < a id = "l01642" name = "l01642" > < / a > < span class = "lineno" > 1642< / span > < / div >
< div class = "line" > < a id = "l01643" name = "l01643" > < / a > < span class = "lineno" > 1643< / span > < span class = "comment" > // Shall we keep the original term ?< / span > < / div >
< div class = "line" > < a id = "l01644" name = "l01644" > < / a > < span class = "lineno" > 1644< / span > < span class = "keywordtype" > bool< / span > keep_term = < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01645" name = "l01645" > < / a > < span class = "lineno" > 1645< / span > < span class = "keywordflow" > if< / span > (info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > bool_var< / a > == < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > kNoIntegerVariable< / a > ) keep_term = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01646" name = "l01646" > < / a > < span class = "lineno" > 1646< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > CapProd< / a > (std::abs(< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > .value()), info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > .value()) ==< / div >
< div class = "line" > < a id = "l01647" name = "l01647" > < / a > < span class = "lineno" > 1647< / 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 = "l01648" name = "l01648" > < / a > < span class = "lineno" > 1648< / span > keep_term = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01649" name = "l01649" > < / a > < span class = "lineno" > 1649< / span > }< / div >
< div class = "line" > < a id = "l01650" name = "l01650" > < / a > < span class = "lineno" > 1650< / span > < / div >
< div class = "line" > < a id = "l01651" name = "l01651" > < / a > < span class = "lineno" > 1651< / span > < span class = "comment" > // TODO(user): On some problem, not replacing the variable at their bound< / span > < / div >
< div class = "line" > < a id = "l01652" name = "l01652" > < / a > < span class = "lineno" > 1652< / span > < span class = "comment" > // by an implied bounds seems beneficial. This is especially the case on< / span > < / div >
< div class = "line" > < a id = "l01653" name = "l01653" > < / a > < span class = "lineno" > 1653< / span > < span class = "comment" > // g200x740.mps.gz< / span > < / div >
< div class = "line" > < a id = "l01654" name = "l01654" > < / a > < span class = "lineno" > 1654< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01655" name = "l01655" > < / a > < span class = "lineno" > 1655< / span > < span class = "comment" > // Note that in ComputeCut() the variable with an LP value at the bound do< / span > < / div >
< div class = "line" > < a id = "l01656" name = "l01656" > < / a > < span class = "lineno" > 1656< / span > < span class = "comment" > // not contribute to the cut efficacity (no loss) but do contribute to the< / span > < / div >
< div class = "line" > < a id = "l01657" name = "l01657" > < / a > < span class = "lineno" > 1657< / span > < span class = "comment" > // various heuristic based on the coefficient magnitude.< / span > < / div >
< div class = "line" > < a id = "l01658" name = "l01658" > < / a > < span class = "lineno" > 1658< / span > < span class = "keywordflow" > if< / span > (substitute_only_inner_variables) {< / div >
< div class = "line" > < a id = "l01659" name = "l01659" > < / a > < span class = "lineno" > 1659< / span > < span class = "keyword" > const< / span > IntegerValue lb = integer_trail_-> LevelZeroLowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01660" name = "l01660" > < / a > < span class = "lineno" > 1660< / span > < span class = "keyword" > const< / span > IntegerValue ub = integer_trail_-> LevelZeroUpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01661" name = "l01661" > < / a > < span class = "lineno" > 1661< / span > < span class = "keywordflow" > if< / span > (lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] - < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (lb) < 1e-2) keep_term = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01662" name = "l01662" > < / a > < span class = "lineno" > 1662< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (ub) - lp_values[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] < 1e-2) keep_term = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01663" name = "l01663" > < / a > < span class = "lineno" > 1663< / span > }< / 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 > < span class = "comment" > // This is when we do not add slack.< / span > < / div >
< div class = "line" > < a id = "l01666" name = "l01666" > < / a > < span class = "lineno" > 1666< / span > < span class = "keywordflow" > if< / span > (slack_infos == < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01667" name = "l01667" > < / a > < span class = "lineno" > 1667< / span > < span class = "comment" > // We do not want to loose anything, so we only replace if the slack lp is< / span > < / div >
< div class = "line" > < a id = "l01668" name = "l01668" > < / a > < span class = "lineno" > 1668< / span > < span class = "comment" > // zero.< / span > < / div >
< div class = "line" > < a id = "l01669" name = "l01669" > < / a > < span class = "lineno" > 1669< / span > < span class = "keywordflow" > if< / span > (info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#ac11e010c276514d6402c772d0651f82f" > slack_lp_value< / a > > 1e-6) keep_term = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01670" name = "l01670" > < / a > < span class = "lineno" > 1670< / span > }< / div >
< div class = "line" > < a id = "l01671" name = "l01671" > < / a > < span class = "lineno" > 1671< / span > < / div >
< div class = "line" > < a id = "l01672" name = "l01672" > < / a > < span class = "lineno" > 1672< / span > < span class = "keywordflow" > if< / span > (keep_term) {< / div >
< div class = "line" > < a id = "l01673" name = "l01673" > < / a > < span class = "lineno" > 1673< / span > tmp_terms_.push_back({< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > });< / div >
< div class = "line" > < a id = "l01674" name = "l01674" > < / a > < span class = "lineno" > 1674< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01675" name = "l01675" > < / a > < span class = "lineno" > 1675< / span > < span class = "comment" > // Substitute.< / span > < / div >
< div class = "line" > < a id = "l01676" name = "l01676" > < / a > < span class = "lineno" > 1676< / span > < span class = "keyword" > const< / span > IntegerValue lb = integer_trail_-> LevelZeroLowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01677" name = "l01677" > < / a > < span class = "lineno" > 1677< / span > < span class = "keyword" > const< / span > IntegerValue ub = integer_trail_-> LevelZeroUpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01678" name = "l01678" > < / a > < span class = "lineno" > 1678< / span > < / div >
< div class = "line" > < a id = "l01679" name = "l01679" > < / a > < span class = "lineno" > 1679< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html" > SlackInfo< / a > slack_info;< / div >
< div class = "line" > < a id = "l01680" name = "l01680" > < / a > < span class = "lineno" > 1680< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#adb47ac0cff7c9dc4dc5f101d38a91185" > lp_value< / a > = info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#ac11e010c276514d6402c772d0651f82f" > slack_lp_value< / a > ;< / div >
< div class = "line" > < a id = "l01681" name = "l01681" > < / a > < span class = "lineno" > 1681< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > = 0;< / div >
< div class = "line" > < a id = "l01682" name = "l01682" > < / a > < span class = "lineno" > 1682< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = ub - lb;< / 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 > (info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a6d2822d5e07c3716efcdf73a4ae5eafc" > is_positive< / a > ) {< / div >
< div class = "line" > < a id = "l01685" name = "l01685" > < / a > < span class = "lineno" > 1685< / span > < span class = "comment" > // X = Indicator * diff + lb + Slack< / span > < / div >
< div class = "line" > < a id = "l01686" name = "l01686" > < / a > < span class = "lineno" > 1686< / span > tmp_terms_.push_back({info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > bool_var< / a > , < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > });< / div >
< div class = "line" > < a id = "l01687" name = "l01687" > < / a > < span class = "lineno" > 1687< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (-< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , lb, & new_ub)) {< / div >
< div class = "line" > < a id = "l01688" name = "l01688" > < / a > < span class = "lineno" > 1688< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Overflow" < / span > ;< / div >
< div class = "line" > < a id = "l01689" name = "l01689" > < / a > < span class = "lineno" > 1689< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01690" name = "l01690" > < / a > < span class = "lineno" > 1690< / span > }< / div >
< div class = "line" > < a id = "l01691" name = "l01691" > < / a > < span class = "lineno" > 1691< / span > < span class = "keywordflow" > if< / span > (slack_infos != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01692" name = "l01692" > < / a > < span class = "lineno" > 1692< / span > tmp_terms_.push_back({first_slack, < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > });< / div >
< div class = "line" > < a id = "l01693" name = "l01693" > < / a > < span class = "lineno" > 1693< / span > first_slack += 2;< / div >
< div class = "line" > < a id = "l01694" name = "l01694" > < / a > < span class = "lineno" > 1694< / span > < / div >
< div class = "line" > < a id = "l01695" name = "l01695" > < / a > < span class = "lineno" > 1695< / span > < span class = "comment" > // slack = X - Indicator * info.bound_diff - lb;< / span > < / div >
< div class = "line" > < a id = "l01696" name = "l01696" > < / a > < span class = "lineno" > 1696< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a250583d63e8184c6f9f4deba1125e6bb" > terms< / a > .push_back({< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , IntegerValue(1)});< / div >
< div class = "line" > < a id = "l01697" name = "l01697" > < / a > < span class = "lineno" > 1697< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a250583d63e8184c6f9f4deba1125e6bb" > terms< / a > .push_back({info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > bool_var< / a > , -info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > });< / div >
< div class = "line" > < a id = "l01698" name = "l01698" > < / a > < span class = "lineno" > 1698< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#acd07f8397a2e61932c8ee17a4e300e23" > offset< / a > = -lb;< / div >
< div class = "line" > < a id = "l01699" name = "l01699" > < / a > < span class = "lineno" > 1699< / span > slack_infos-> push_back(slack_info);< / 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 > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01702" name = "l01702" > < / a > < span class = "lineno" > 1702< / span > < span class = "comment" > // X = (1 - Indicator) * (diff) + lb + Slack< / span > < / div >
< div class = "line" > < a id = "l01703" name = "l01703" > < / a > < span class = "lineno" > 1703< / span > < span class = "comment" > // X = -Indicator * (diff) + lb + diff + Slack< / span > < / div >
< div class = "line" > < a id = "l01704" name = "l01704" > < / a > < span class = "lineno" > 1704< / span > tmp_terms_.push_back({info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > bool_var< / a > , -< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > * info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > });< / div >
< div class = "line" > < a id = "l01705" name = "l01705" > < / a > < span class = "lineno" > 1705< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > AddProductTo< / a > (-< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > , lb + info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > , & new_ub)) {< / div >
< div class = "line" > < a id = "l01706" name = "l01706" > < / a > < span class = "lineno" > 1706< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Overflow" < / span > ;< / div >
< div class = "line" > < a id = "l01707" name = "l01707" > < / a > < span class = "lineno" > 1707< / span > < span class = "keywordflow" > return< / 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 > < span class = "keywordflow" > if< / span > (slack_infos != < span class = "keyword" > nullptr< / span > ) {< / div >
< div class = "line" > < a id = "l01710" name = "l01710" > < / a > < span class = "lineno" > 1710< / span > tmp_terms_.push_back({first_slack, < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > });< / div >
< div class = "line" > < a id = "l01711" name = "l01711" > < / a > < span class = "lineno" > 1711< / span > first_slack += 2;< / div >
< div class = "line" > < a id = "l01712" name = "l01712" > < / a > < span class = "lineno" > 1712< / span > < / div >
< div class = "line" > < a id = "l01713" name = "l01713" > < / a > < span class = "lineno" > 1713< / span > < span class = "comment" > // slack = X + Indicator * info.bound_diff - lb - diff;< / span > < / div >
< div class = "line" > < a id = "l01714" name = "l01714" > < / a > < span class = "lineno" > 1714< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a250583d63e8184c6f9f4deba1125e6bb" > terms< / a > .push_back({< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , IntegerValue(1)});< / div >
< div class = "line" > < a id = "l01715" name = "l01715" > < / a > < span class = "lineno" > 1715< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a250583d63e8184c6f9f4deba1125e6bb" > terms< / a > .push_back({info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > bool_var< / a > , +info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > });< / div >
< div class = "line" > < a id = "l01716" name = "l01716" > < / a > < span class = "lineno" > 1716< / span > slack_info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#acd07f8397a2e61932c8ee17a4e300e23" > offset< / a > = -lb - info.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > bound_diff< / a > ;< / div >
< div class = "line" > < a id = "l01717" name = "l01717" > < / a > < span class = "lineno" > 1717< / span > slack_infos-> push_back(slack_info);< / 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 > changed = < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01721" name = "l01721" > < / a > < span class = "lineno" > 1721< / span > }< / div >
< div class = "line" > < a id = "l01722" name = "l01722" > < / a > < span class = "lineno" > 1722< / span > < / div >
< div class = "line" > < a id = "l01723" name = "l01723" > < / a > < span class = "lineno" > 1723< / span > < span class = "comment" > // Add all the new terms coefficient to the overflow detection to avoid< / span > < / div >
< div class = "line" > < a id = "l01724" name = "l01724" > < / a > < span class = "lineno" > 1724< / span > < span class = "comment" > // issue when merging terms referring to the same variable.< / span > < / div >
< div class = "line" > < a id = "l01725" name = "l01725" > < / a > < span class = "lineno" > 1725< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = old_size; i < tmp_terms_.size(); ++i) {< / div >
< div class = "line" > < a id = "l01726" name = "l01726" > < / a > < span class = "lineno" > 1726< / span > overflow_detection =< / div >
< div class = "line" > < a id = "l01727" name = "l01727" > < / a > < span class = "lineno" > 1727< / span > < a class = "code hl_function" href = "namespaceoperations__research.html#a111f44b9b9cf67a8e8d83794ac9f5291" > CapAdd< / a > (overflow_detection, std::abs(tmp_terms_[i].second.value()));< / div >
< div class = "line" > < a id = "l01728" name = "l01728" > < / a > < span class = "lineno" > 1728< / span > }< / div >
< div class = "line" > < a id = "l01729" name = "l01729" > < / a > < span class = "lineno" > 1729< / span > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01730" name = "l01730" > < / a > < span class = "lineno" > 1730< / span > < / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01731" name = "l01731" > < / a > < span class = "lineno" > 1731< / span > < span class = "keywordflow" > if< / span > (overflow_detection > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > kMaxIntegerValue< / a > ) {< / div >
< div class = "line" > < a id = "l01732" name = "l01732" > < / a > < span class = "lineno" > 1732< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Overflow" < / span > ;< / div >
< div class = "line" > < a id = "l01733" name = "l01733" > < / a > < span class = "lineno" > 1733< / span > < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01734" name = "l01734" > < / a > < span class = "lineno" > 1734< / span > }< / div >
< div class = "line" > < a id = "l01735" name = "l01735" > < / a > < span class = "lineno" > 1735< / span > < span class = "keywordflow" > if< / span > (!changed) < span class = "keywordflow" > return< / span > ;< / div >
< div class = "line" > < a id = "l01736" name = "l01736" > < / a > < span class = "lineno" > 1736< / span > < / div >
< div class = "line" > < a id = "l01737" name = "l01737" > < / a > < span class = "lineno" > 1737< / span > < span class = "comment" > // Update the cut.< / span > < / div >
< div class = "line" > < a id = "l01738" name = "l01738" > < / a > < span class = "lineno" > 1738< / span > < span class = "comment" > //< / span > < / div >
< div class = "line" > < a id = "l01739" name = "l01739" > < / a > < span class = "lineno" > 1739< / span > < span class = "comment" > // Note that because of our overflow_detection variable, there should be< / span > < / div >
< div class = "line" > < a id = "l01740" name = "l01740" > < / a > < span class = "lineno" > 1740< / span > < span class = "comment" > // no integer overflow when we merge identical terms.< / span > < / div >
< div class = "line" > < a id = "l01741" name = "l01741" > < / a > < span class = "lineno" > 1741< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ; < span class = "comment" > // Not relevant.< / span > < / div >
< div class = "line" > < a id = "l01742" name = "l01742" > < / a > < span class = "lineno" > 1742< / span > cut-> < a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = new_ub;< / div >
< div class = "line" > < a id = "l01743" name = "l01743" > < / a > < span class = "lineno" > 1743< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a6314c72e08e179c06ce3b76747499b8c" > CleanTermsAndFillConstraint< / a > (& tmp_terms_, cut);< / 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 > < / div >
< div class = "line" > < a id = "l01746" name = "l01746" > < / a > < span class = "lineno" > < a class = "line" href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#ab1b4642341faf5ff972b02f034d88f21" > 1746< / a > < / span > < span class = "keywordtype" > bool< / span > ImpliedBoundsProcessor::DebugSlack(IntegerVariable first_slack,< / div >
< div class = "line" > < a id = "l01747" name = "l01747" > < / a > < span class = "lineno" > 1747< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & initial_cut,< / div >
< div class = "line" > < a id = "l01748" name = "l01748" > < / a > < span class = "lineno" > 1748< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > & cut,< / div >
< div class = "line" > < a id = "l01749" name = "l01749" > < / a > < span class = "lineno" > 1749< / span > < span class = "keyword" > const< / span > std::vector< SlackInfo> & info) {< / div >
< div class = "line" > < a id = "l01750" name = "l01750" > < / a > < span class = "lineno" > 1750< / span > tmp_terms_.clear();< / div >
< div class = "line" > < a id = "l01751" name = "l01751" > < / a > < span class = "lineno" > 1751< / span > IntegerValue new_ub = cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > ;< / div >
< div class = "line" > < a id = "l01752" name = "l01752" > < / a > < span class = "lineno" > 1752< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l01753" name = "l01753" > < / a > < span class = "lineno" > 1753< / span > < span class = "comment" > // Simple copy for non-slack variables.< / span > < / div >
< div class = "line" > < a id = "l01754" name = "l01754" > < / a > < span class = "lineno" > 1754< / span > < span class = "keywordflow" > if< / span > (cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i] < first_slack) {< / div >
< div class = "line" > < a id = "l01755" name = "l01755" > < / a > < span class = "lineno" > 1755< / span > tmp_terms_.push_back({cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i], cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i]});< / div >
< div class = "line" > < a id = "l01756" name = "l01756" > < / a > < span class = "lineno" > 1756< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01757" name = "l01757" > < / a > < span class = "lineno" > 1757< / 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 = "comment" > // Replace slack by its definition.< / span > < / div >
< div class = "line" > < a id = "l01760" name = "l01760" > < / a > < span class = "lineno" > 1760< / span > < span class = "keyword" > const< / span > IntegerValue multiplier = cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i];< / div >
< div class = "line" > < a id = "l01761" name = "l01761" > < / a > < span class = "lineno" > 1761< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > < a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > = (cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i].value() - first_slack.value()) / 2;< / div >
< div class = "line" > < a id = "l01762" name = "l01762" > < / a > < span class = "lineno" > 1762< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > std::pair< IntegerVariable, IntegerValue> & term :< / div >
< div class = "line" > < a id = "l01763" name = "l01763" > < / a > < span class = "lineno" > 1763< / span > info[< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ].terms) {< / div >
< div class = "line" > < a id = "l01764" name = "l01764" > < / a > < span class = "lineno" > 1764< / span > tmp_terms_.push_back({term.first, term.second * multiplier});< / div >
< div class = "line" > < a id = "l01765" name = "l01765" > < / a > < span class = "lineno" > 1765< / span > }< / div >
< div class = "line" > < a id = "l01766" name = "l01766" > < / a > < span class = "lineno" > 1766< / span > new_ub -= multiplier * info[< a class = "code hl_variable" href = "local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0" > index< / a > ].offset;< / div >
< div class = "line" > < a id = "l01767" name = "l01767" > < / a > < span class = "lineno" > 1767< / span > }< / div >
< div class = "line" > < a id = "l01768" name = "l01768" > < / a > < span class = "lineno" > 1768< / span > < / div >
< div class = "line" > < a id = "l01769" name = "l01769" > < / a > < span class = "lineno" > 1769< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > tmp_cut;< / div >
< div class = "line" > < a id = "l01770" name = "l01770" > < / a > < span class = "lineno" > 1770< / span > tmp_cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ; < span class = "comment" > // Not relevant.< / span > < / div >
< div class = "line" > < a id = "l01771" name = "l01771" > < / a > < span class = "lineno" > 1771< / span > tmp_cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = new_ub;< / div >
< div class = "line" > < a id = "l01772" name = "l01772" > < / a > < span class = "lineno" > 1772< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a6314c72e08e179c06ce3b76747499b8c" > CleanTermsAndFillConstraint< / a > (& tmp_terms_, & tmp_cut);< / div >
< div class = "line" > < a id = "l01773" name = "l01773" > < / a > < span class = "lineno" > 1773< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aa2ba15be9aeabce0142c726fbf880798" > MakeAllVariablesPositive< / a > (& tmp_cut);< / 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 > < span class = "comment" > // We need to canonicalize the initial_cut too for comparison. Note that we< / span > < / div >
< div class = "line" > < a id = "l01776" name = "l01776" > < / a > < span class = "lineno" > 1776< / span > < span class = "comment" > // only use this for debug, so we don' t care too much about the memory and< / span > < / div >
< div class = "line" > < a id = "l01777" name = "l01777" > < / a > < span class = "lineno" > 1777< / span > < span class = "comment" > // extra time.< / span > < / div >
< div class = "line" > < a id = "l01778" name = "l01778" > < / a > < span class = "lineno" > 1778< / span > < span class = "comment" > // TODO(user): Expose CanonicalizeConstraint() from the manager.< / span > < / div >
< div class = "line" > < a id = "l01779" name = "l01779" > < / a > < span class = "lineno" > 1779< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > tmp_copy;< / div >
< div class = "line" > < a id = "l01780" name = "l01780" > < / a > < span class = "lineno" > 1780< / span > tmp_terms_.clear();< / div >
< div class = "line" > < a id = "l01781" name = "l01781" > < / a > < span class = "lineno" > 1781< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < initial_cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .size(); ++i) {< / div >
< div class = "line" > < a id = "l01782" name = "l01782" > < / a > < span class = "lineno" > 1782< / span > tmp_terms_.push_back({initial_cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > [i], initial_cut.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > coeffs< / a > [i]});< / div >
< div class = "line" > < a id = "l01783" name = "l01783" > < / a > < span class = "lineno" > 1783< / span > }< / div >
< div class = "line" > < a id = "l01784" name = "l01784" > < / a > < span class = "lineno" > 1784< / span > tmp_copy.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > lb< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ; < span class = "comment" > // Not relevant.< / span > < / div >
< div class = "line" > < a id = "l01785" name = "l01785" > < / a > < span class = "lineno" > 1785< / span > tmp_copy.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > ub< / a > = new_ub;< / div >
< div class = "line" > < a id = "l01786" name = "l01786" > < / a > < span class = "lineno" > 1786< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a6314c72e08e179c06ce3b76747499b8c" > CleanTermsAndFillConstraint< / a > (& tmp_terms_, & tmp_copy);< / div >
< div class = "line" > < a id = "l01787" name = "l01787" > < / a > < span class = "lineno" > 1787< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#aa2ba15be9aeabce0142c726fbf880798" > MakeAllVariablesPositive< / a > (& tmp_copy);< / div >
< div class = "line" > < a id = "l01788" name = "l01788" > < / a > < span class = "lineno" > 1788< / span > < / div >
< div class = "line" > < a id = "l01789" name = "l01789" > < / a > < span class = "lineno" > 1789< / span > < span class = "keywordflow" > if< / span > (tmp_cut == tmp_copy) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / 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 > < 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 > ) < < first_slack;< / div >
< div class = "line" > < a id = "l01792" name = "l01792" > < / a > < span class = "lineno" > 1792< / span > < 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 > ) < < tmp_copy.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a764be64f3029f8b8e23511061d8de355" > DebugString< / a > ();< / div >
< div class = "line" > < a id = "l01793" name = "l01793" > < / a > < span class = "lineno" > 1793< / span > < 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 > ) < < cut.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a764be64f3029f8b8e23511061d8de355" > DebugString< / a > ();< / div >
< div class = "line" > < a id = "l01794" name = "l01794" > < / a > < span class = "lineno" > 1794< / span > < 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 > ) < < tmp_cut.< a class = "code hl_function" href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a764be64f3029f8b8e23511061d8de355" > DebugString< / a > ();< / div >
< div class = "line" > < a id = "l01795" name = "l01795" > < / a > < span class = "lineno" > 1795< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > false< / span > ;< / div >
< div class = "line" > < a id = "l01796" name = "l01796" > < / a > < span class = "lineno" > 1796< / span > }< / div >
< div class = "line" > < a id = "l01797" name = "l01797" > < / a > < span class = "lineno" > 1797< / span > < / div >
< div class = "line" > < a id = "l01798" name = "l01798" > < / a > < span class = "lineno" > 1798< / span > < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a id = "l01799" name = "l01799" > < / a > < span class = "lineno" > 1799< / span > < / div >
< div class = "line" > < a id = "l01800" name = "l01800" > < / a > < span class = "lineno" > 1800< / span > int64_t SumOfKMinValues(< span class = "keyword" > const< / span > absl::btree_set< int64_t> & values, < span class = "keywordtype" > int< / span > k) {< / div >
< div class = "line" > < a id = "l01801" name = "l01801" > < / a > < span class = "lineno" > 1801< / span > < span class = "keywordtype" > int< / span > count = 0;< / div >
< div class = "line" > < a id = "l01802" name = "l01802" > < / a > < span class = "lineno" > 1802< / span > int64_t sum = 0;< / div >
< div class = "line" > < a id = "l01803" name = "l01803" > < / a > < span class = "lineno" > 1803< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > int64_t < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > : values) {< / div >
< div class = "line" > < a id = "l01804" name = "l01804" > < / a > < span class = "lineno" > 1804< / span > sum += < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > ;< / div >
< div class = "line" > < a id = "l01805" name = "l01805" > < / a > < span class = "lineno" > 1805< / span > < span class = "keywordflow" > if< / span > (++count > = k) < span class = "keywordflow" > return< / span > sum;< / div >
< div class = "line" > < a id = "l01806" name = "l01806" > < / a > < span class = "lineno" > 1806< / span > }< / div >
< div class = "line" > < a id = "l01807" name = "l01807" > < / a > < span class = "lineno" > 1807< / span > < span class = "keywordflow" > return< / span > sum;< / div >
< div class = "line" > < a id = "l01808" name = "l01808" > < / a > < span class = "lineno" > 1808< / span > }< / div >
< div class = "line" > < a id = "l01809" name = "l01809" > < / a > < span class = "lineno" > 1809< / span > < / div >
< div class = "line" > < a id = "l01810" name = "l01810" > < / a > < span class = "lineno" > 1810< / span > < span class = "keywordtype" > void< / span > TryToGenerateAllDiffCut(< / div >
< div class = "line" > < a id = "l01811" name = "l01811" > < / a > < span class = "lineno" > 1811< / span > < span class = "keyword" > const< / span > std::vector< std::pair< double, AffineExpression> > & sorted_exprs_lp,< / div >
< div class = "line" > < a id = "l01812" name = "l01812" > < / a > < span class = "lineno" > 1812< / span > < span class = "keyword" > const< / span > IntegerTrail& integer_trail,< / div >
< div class = "line" > < a id = "l01813" name = "l01813" > < / a > < span class = "lineno" > 1813< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l01814" name = "l01814" > < / a > < span class = "lineno" > 1814< / span > LinearConstraintManager* manager, Model* < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ) {< / div >
< div class = "line" > < a id = "l01815" name = "l01815" > < / a > < span class = "lineno" > 1815< / span > std::vector< AffineExpression> current_set_exprs;< / div >
< div class = "line" > < a id = "l01816" name = "l01816" > < / a > < span class = "lineno" > 1816< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > num_exprs = sorted_exprs_lp.size();< / div >
< div class = "line" > < a id = "l01817" name = "l01817" > < / a > < span class = "lineno" > 1817< / span > absl::btree_set< int64_t> min_values;< / div >
< div class = "line" > < a id = "l01818" name = "l01818" > < / a > < span class = "lineno" > 1818< / span > absl::btree_set< int64_t> negated_max_values;< / div >
< div class = "line" > < a id = "l01819" name = "l01819" > < / a > < span class = "lineno" > 1819< / span > < span class = "keywordtype" > double< / span > sum = 0.0;< / div >
< div class = "line" > < a id = "l01820" name = "l01820" > < / a > < span class = "lineno" > 1820< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > auto< / span > value_expr : sorted_exprs_lp) {< / div >
< div class = "line" > < a id = "l01821" name = "l01821" > < / a > < span class = "lineno" > 1821< / span > sum += value_expr.first;< / div >
< div class = "line" > < a id = "l01822" name = "l01822" > < / a > < span class = "lineno" > 1822< / span > < span class = "keyword" > const< / span > AffineExpression expr = value_expr.second;< / div >
< div class = "line" > < a id = "l01823" name = "l01823" > < / a > < span class = "lineno" > 1823< / span > < span class = "keywordflow" > if< / span > (integer_trail.IsFixed(expr)) {< / div >
< div class = "line" > < a id = "l01824" name = "l01824" > < / a > < span class = "lineno" > 1824< / span > < span class = "keyword" > const< / span > int64_t < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > = integer_trail.FixedValue(expr).value();< / div >
< div class = "line" > < a id = "l01825" name = "l01825" > < / a > < span class = "lineno" > 1825< / span > min_values.insert(< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > );< / div >
< div class = "line" > < a id = "l01826" name = "l01826" > < / a > < span class = "lineno" > 1826< / span > negated_max_values.insert(-< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > );< / div >
< div class = "line" > < a id = "l01827" name = "l01827" > < / a > < span class = "lineno" > 1827< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01828" name = "l01828" > < / a > < span class = "lineno" > 1828< / span > < span class = "keywordtype" > int< / span > count = 0;< / div >
< div class = "line" > < a id = "l01829" name = "l01829" > < / a > < span class = "lineno" > 1829< / span > < span class = "keyword" > const< / span > int64_t < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = expr.coeff.value();< / div >
< div class = "line" > < a id = "l01830" name = "l01830" > < / a > < span class = "lineno" > 1830< / span > < span class = "keyword" > const< / span > int64_t < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a98c17ae8d99a73259ea78de8c4b66254" > constant< / a > = expr.constant.value();< / div >
< div class = "line" > < a id = "l01831" name = "l01831" > < / a > < span class = "lineno" > 1831< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > int64_t < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > :< / div >
< div class = "line" > < a id = "l01832" name = "l01832" > < / a > < span class = "lineno" > 1832< / span > integer_trail.InitialVariableDomain(expr.var).Values()) {< / div >
< div class = "line" > < a id = "l01833" name = "l01833" > < / a > < span class = "lineno" > 1833< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > > 0) {< / div >
< div class = "line" > < a id = "l01834" name = "l01834" > < / a > < span class = "lineno" > 1834< / span > min_values.insert(< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > + < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a98c17ae8d99a73259ea78de8c4b66254" > constant< / a > );< / div >
< div class = "line" > < a id = "l01835" name = "l01835" > < / a > < span class = "lineno" > 1835< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01836" name = "l01836" > < / a > < span class = "lineno" > 1836< / span > negated_max_values.insert(-(< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > + < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a98c17ae8d99a73259ea78de8c4b66254" > constant< / a > ));< / div >
< div class = "line" > < a id = "l01837" name = "l01837" > < / a > < span class = "lineno" > 1837< / span > }< / div >
< div class = "line" > < a id = "l01838" name = "l01838" > < / a > < span class = "lineno" > 1838< / span > < span class = "keywordflow" > if< / span > (++count > = num_exprs) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01839" name = "l01839" > < / a > < span class = "lineno" > 1839< / span > }< / div >
< div class = "line" > < a id = "l01840" name = "l01840" > < / a > < span class = "lineno" > 1840< / span > < / div >
< div class = "line" > < a id = "l01841" name = "l01841" > < / a > < span class = "lineno" > 1841< / span > count = 0;< / div >
< div class = "line" > < a id = "l01842" name = "l01842" > < / a > < span class = "lineno" > 1842< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > int64_t < a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > :< / div >
< div class = "line" > < a id = "l01843" name = "l01843" > < / a > < span class = "lineno" > 1843< / span > integer_trail.InitialVariableDomain(expr.var).Negation().Values()) {< / div >
< div class = "line" > < a id = "l01844" name = "l01844" > < / a > < span class = "lineno" > 1844< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > > 0) {< / div >
< div class = "line" > < a id = "l01845" name = "l01845" > < / a > < span class = "lineno" > 1845< / span > negated_max_values.insert(< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > - < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a98c17ae8d99a73259ea78de8c4b66254" > constant< / a > );< / div >
< div class = "line" > < a id = "l01846" name = "l01846" > < / a > < span class = "lineno" > 1846< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l01847" name = "l01847" > < / a > < span class = "lineno" > 1847< / span > min_values.insert(-< a class = "code hl_variable" href = "demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514" > value< / a > * < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > + < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a98c17ae8d99a73259ea78de8c4b66254" > constant< / a > );< / 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 > < span class = "keywordflow" > if< / span > (++count > = num_exprs) < span class = "keywordflow" > break< / span > ;< / div >
< div class = "line" > < a id = "l01850" name = "l01850" > < / a > < span class = "lineno" > 1850< / span > }< / div >
< div class = "line" > < a id = "l01851" name = "l01851" > < / a > < span class = "lineno" > 1851< / span > }< / div >
< div class = "line" > < a id = "l01852" name = "l01852" > < / a > < span class = "lineno" > 1852< / span > current_set_exprs.push_back(expr);< / div >
< div class = "line" > < a id = "l01853" name = "l01853" > < / a > < span class = "lineno" > 1853< / span > < span class = "keyword" > const< / span > int64_t required_min_sum =< / div >
< div class = "line" > < a id = "l01854" name = "l01854" > < / a > < span class = "lineno" > 1854< / span > SumOfKMinValues(min_values, current_set_exprs.size());< / div >
< div class = "line" > < a id = "l01855" name = "l01855" > < / a > < span class = "lineno" > 1855< / span > < span class = "keyword" > const< / span > int64_t required_max_sum =< / div >
< div class = "line" > < a id = "l01856" name = "l01856" > < / a > < span class = "lineno" > 1856< / span > -SumOfKMinValues(negated_max_values, current_set_exprs.size());< / div >
< div class = "line" > < a id = "l01857" name = "l01857" > < / a > < span class = "lineno" > 1857< / span > < span class = "keywordflow" > if< / span > (sum < required_min_sum || sum > required_max_sum) {< / div >
< div class = "line" > < a id = "l01858" name = "l01858" > < / a > < span class = "lineno" > 1858< / span > LinearConstraintBuilder cut(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , IntegerValue(required_min_sum),< / div >
< div class = "line" > < a id = "l01859" name = "l01859" > < / a > < span class = "lineno" > 1859< / span > IntegerValue(required_max_sum));< / div >
< div class = "line" > < a id = "l01860" name = "l01860" > < / a > < span class = "lineno" > 1860< / span > < span class = "keywordflow" > for< / span > (AffineExpression expr : current_set_exprs) {< / div >
< div class = "line" > < a id = "l01861" name = "l01861" > < / a > < span class = "lineno" > 1861< / span > cut.AddTerm(expr, IntegerValue(1));< / div >
< div class = "line" > < a id = "l01862" name = "l01862" > < / a > < span class = "lineno" > 1862< / span > }< / div >
< div class = "line" > < a id = "l01863" name = "l01863" > < / a > < span class = "lineno" > 1863< / span > manager-> AddCut(cut.Build(), < span class = "stringliteral" > " all_diff" < / span > , lp_values);< / div >
< div class = "line" > < a id = "l01864" name = "l01864" > < / a > < span class = "lineno" > 1864< / span > < span class = "comment" > // NOTE: We can extend the current set but it is more helpful to generate< / span > < / div >
< div class = "line" > < a id = "l01865" name = "l01865" > < / a > < span class = "lineno" > 1865< / span > < span class = "comment" > // the cut on a different set of variables so we reset the counters.< / span > < / div >
< div class = "line" > < a id = "l01866" name = "l01866" > < / a > < span class = "lineno" > 1866< / span > sum = 0.0;< / div >
< div class = "line" > < a id = "l01867" name = "l01867" > < / a > < span class = "lineno" > 1867< / span > current_set_exprs.clear();< / div >
< div class = "line" > < a id = "l01868" name = "l01868" > < / a > < span class = "lineno" > 1868< / span > min_values.clear();< / div >
< div class = "line" > < a id = "l01869" name = "l01869" > < / a > < span class = "lineno" > 1869< / span > negated_max_values.clear();< / div >
< div class = "line" > < a id = "l01870" name = "l01870" > < / a > < span class = "lineno" > 1870< / span > }< / div >
< div class = "line" > < a id = "l01871" name = "l01871" > < / a > < span class = "lineno" > 1871< / span > }< / div >
< div class = "line" > < a id = "l01872" name = "l01872" > < / a > < span class = "lineno" > 1872< / span > }< / div >
< div class = "line" > < a id = "l01873" name = "l01873" > < / a > < span class = "lineno" > 1873< / span > < / div >
< div class = "line" > < a id = "l01874" name = "l01874" > < / a > < span class = "lineno" > 1874< / span > } < span class = "comment" > // namespace< / span > < / div >
< div class = "line" > < a id = "l01875" name = "l01875" > < / a > < span class = "lineno" > 1875< / span > < / div >
< div class = "line" > < a id = "l01876" name = "l01876" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a25553837a2eba1b1fbb5ac0eac64ad15" > 1876< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a25553837a2eba1b1fbb5ac0eac64ad15" > CreateAllDifferentCutGenerator< / a > (< / div >
< div class = "line" > < a id = "l01877" name = "l01877" > < / a > < span class = "lineno" > 1877< / span > < span class = "keyword" > const< / span > std::vector< AffineExpression> & exprs, < 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 = "l01878" name = "l01878" > < / a > < span class = "lineno" > 1878< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > result;< / div >
< div class = "line" > < a id = "l01879" name = "l01879" > < / a > < span class = "lineno" > 1879< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > * integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l01880" name = "l01880" > < / a > < span class = "lineno" > 1880< / span > < / div >
< div class = "line" > < a id = "l01881" name = "l01881" > < / a > < span class = "lineno" > 1881< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_affine_expression.html" > AffineExpression< / a > & expr : exprs) {< / div >
< div class = "line" > < a id = "l01882" name = "l01882" > < / a > < span class = "lineno" > 1882< / span > < span class = "keywordflow" > if< / span > (!integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a523501d854b2ca8034d37c15e7c89117" > IsFixed< / a > (expr)) {< / div >
< div class = "line" > < a id = "l01883" name = "l01883" > < / a > < span class = "lineno" > 1883< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(expr.var);< / 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 > }< / div >
< div class = "line" > < a id = "l01886" name = "l01886" > < / a > < span class = "lineno" > 1886< / span > < a class = "code hl_function" href = "namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d" > gtl::STLSortAndRemoveDuplicates< / a > (& result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > );< / div >
< div class = "line" > < a id = "l01887" name = "l01887" > < / a > < span class = "lineno" > 1887< / span > < / div >
< div class = "line" > < a id = "l01888" name = "l01888" > < / a > < span class = "lineno" > 1888< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_trail.html" > Trail< / a > * 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 = "l01889" name = "l01889" > < / a > < span class = "lineno" > 1889< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > generate_cuts< / a > =< / div >
< div class = "line" > < a id = "l01890" name = "l01890" > < / a > < span class = "lineno" > 1890< / span > [exprs, integer_trail, trail, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ](< / div >
< div class = "line" > < a id = "l01891" name = "l01891" > < / a > < span class = "lineno" > 1891< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l01892" name = "l01892" > < / a > < span class = "lineno" > 1892< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > LinearConstraintManager< / a > * manager) {< / div >
< div class = "line" > < a id = "l01893" name = "l01893" > < / a > < span class = "lineno" > 1893< / span > < span class = "comment" > // These cuts work at all levels but the generator adds too many cuts on< / span > < / div >
< div class = "line" > < a id = "l01894" name = "l01894" > < / a > < span class = "lineno" > 1894< / span > < span class = "comment" > // some instances and degrade the performance so we only use it at level< / span > < / div >
< div class = "line" > < a id = "l01895" name = "l01895" > < / a > < span class = "lineno" > 1895< / span > < span class = "comment" > // 0.< / span > < / div >
< div class = "line" > < a id = "l01896" name = "l01896" > < / a > < span class = "lineno" > 1896< / span > < span class = "keywordflow" > if< / span > (trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_trail.html#ad63c4461a1384629cb99413c6df8b9ca" > CurrentDecisionLevel< / a > () > 0) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01897" name = "l01897" > < / a > < span class = "lineno" > 1897< / span > std::vector< std::pair< double, AffineExpression> > sorted_exprs;< / div >
< div class = "line" > < a id = "l01898" name = "l01898" > < / a > < span class = "lineno" > 1898< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_affine_expression.html" > AffineExpression< / a > expr : exprs) {< / div >
< div class = "line" > < a id = "l01899" name = "l01899" > < / a > < span class = "lineno" > 1899< / span > < span class = "keywordflow" > if< / span > (integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (expr) ==< / div >
< div class = "line" > < a id = "l01900" name = "l01900" > < / a > < span class = "lineno" > 1900< / span > integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > LevelZeroUpperBound< / a > (expr)) {< / div >
< div class = "line" > < a id = "l01901" name = "l01901" > < / a > < span class = "lineno" > 1901< / span > < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01902" name = "l01902" > < / a > < span class = "lineno" > 1902< / span > }< / div >
< div class = "line" > < a id = "l01903" name = "l01903" > < / a > < span class = "lineno" > 1903< / span > sorted_exprs.push_back(std::make_pair(expr.LpValue(lp_values), expr));< / div >
< div class = "line" > < a id = "l01904" name = "l01904" > < / a > < span class = "lineno" > 1904< / span > }< / div >
< div class = "line" > < a id = "l01905" name = "l01905" > < / a > < span class = "lineno" > 1905< / span > std::sort(sorted_exprs.begin(), sorted_exprs.end(),< / div >
< div class = "line" > < a id = "l01906" name = "l01906" > < / a > < span class = "lineno" > 1906< / span > [](std::pair< double, AffineExpression> & < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6" > a< / a > ,< / div >
< div class = "line" > < a id = "l01907" name = "l01907" > < / a > < span class = "lineno" > 1907< / span > < span class = "keyword" > const< / span > std::pair< double, AffineExpression> & < a class = "code hl_variable" href = "constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683" > b< / a > ) {< / div >
< div class = "line" > < a id = "l01908" name = "l01908" > < / a > < span class = "lineno" > 1908< / span > return a.first < b.first;< / div >
< div class = "line" > < a id = "l01909" name = "l01909" > < / a > < span class = "lineno" > 1909< / span > });< / div >
< div class = "line" > < a id = "l01910" name = "l01910" > < / a > < span class = "lineno" > 1910< / span > TryToGenerateAllDiffCut(sorted_exprs, *integer_trail, lp_values,< / div >
< div class = "line" > < a id = "l01911" name = "l01911" > < / a > < span class = "lineno" > 1911< / span > manager, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > );< / div >
< div class = "line" > < a id = "l01912" name = "l01912" > < / a > < span class = "lineno" > 1912< / span > < span class = "comment" > // Other direction.< / span > < / div >
< div class = "line" > < a id = "l01913" name = "l01913" > < / a > < span class = "lineno" > 1913< / span > std::reverse(sorted_exprs.begin(), sorted_exprs.end());< / div >
< div class = "line" > < a id = "l01914" name = "l01914" > < / a > < span class = "lineno" > 1914< / span > TryToGenerateAllDiffCut(sorted_exprs, *integer_trail, lp_values,< / div >
< div class = "line" > < a id = "l01915" name = "l01915" > < / a > < span class = "lineno" > 1915< / span > manager, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > );< / div >
< div class = "line" > < a id = "l01916" name = "l01916" > < / a > < span class = "lineno" > 1916< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l01917" name = "l01917" > < / a > < span class = "lineno" > 1917< / span > };< / div >
< div class = "line" > < a id = "l01918" name = "l01918" > < / a > < span class = "lineno" > 1918< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (1) < < < span class = "stringliteral" > " Created all_diff cut generator of size: " < / span > < < exprs.size();< / div >
< div class = "line" > < a id = "l01919" name = "l01919" > < / a > < span class = "lineno" > 1919< / span > < span class = "keywordflow" > return< / span > result;< / div >
< div class = "line" > < a id = "l01920" name = "l01920" > < / a > < span class = "lineno" > 1920< / span > }< / div >
< div class = "line" > < a id = "l01921" name = "l01921" > < / a > < span class = "lineno" > 1921< / span > < / div >
< div class = "line" > < a id = "l01922" name = "l01922" > < / a > < span class = "lineno" > 1922< / span > < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a id = "l01923" name = "l01923" > < / a > < span class = "lineno" > 1923< / span > < span class = "comment" > // Returns max((w2i - w1i)*Li, (w2i - w1i)*Ui).< / span > < / div >
< div class = "line" > < a id = "l01924" name = "l01924" > < / a > < span class = "lineno" > 1924< / span > IntegerValue MaxCornerDifference(< span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ,< / div >
< div class = "line" > < a id = "l01925" name = "l01925" > < / a > < span class = "lineno" > 1925< / span > < span class = "keyword" > const< / span > IntegerValue w1_i,< / div >
< div class = "line" > < a id = "l01926" name = "l01926" > < / a > < span class = "lineno" > 1926< / span > < span class = "keyword" > const< / span > IntegerValue w2_i,< / div >
< div class = "line" > < a id = "l01927" name = "l01927" > < / a > < span class = "lineno" > 1927< / span > < span class = "keyword" > const< / span > IntegerTrail& integer_trail) {< / div >
< div class = "line" > < a id = "l01928" name = "l01928" > < / a > < span class = "lineno" > 1928< / span > < span class = "keyword" > const< / span > IntegerValue lb = integer_trail.LevelZeroLowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01929" name = "l01929" > < / a > < span class = "lineno" > 1929< / span > < span class = "keyword" > const< / span > IntegerValue ub = integer_trail.LevelZeroUpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l01930" name = "l01930" > < / a > < span class = "lineno" > 1930< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > ((w2_i - w1_i) * lb, (w2_i - w1_i) * ub);< / div >
< div class = "line" > < a id = "l01931" name = "l01931" > < / a > < span class = "lineno" > 1931< / span > }< / div >
< div class = "line" > < a id = "l01932" name = "l01932" > < / a > < span class = "lineno" > 1932< / span > < / div >
< div class = "line" > < a id = "l01933" name = "l01933" > < / a > < span class = "lineno" > 1933< / span > < span class = "comment" > // This is the coefficient of zk in the cut, where k = max_index.< / span > < / div >
< div class = "line" > < a id = "l01934" name = "l01934" > < / a > < span class = "lineno" > 1934< / span > < span class = "comment" > // MPlusCoefficient_ki = max((wki - wI(i)i) * Li,< / span > < / div >
< div class = "line" > < a id = "l01935" name = "l01935" > < / a > < span class = "lineno" > 1935< / span > < span class = "comment" > // (wki - wI(i)i) * Ui)< / span > < / div >
< div class = "line" > < a id = "l01936" name = "l01936" > < / a > < span class = "lineno" > 1936< / span > < span class = "comment" > // = max corner difference for variable i,< / span > < / div >
< div class = "line" > < a id = "l01937" name = "l01937" > < / a > < span class = "lineno" > 1937< / span > < span class = "comment" > // target expr I(i), max expr k.< / span > < / div >
< div class = "line" > < a id = "l01938" name = "l01938" > < / a > < span class = "lineno" > 1938< / span > < span class = "comment" > // The coefficient of zk is Sum(i=1..n)(MPlusCoefficient_ki) + bk< / span > < / div >
< div class = "line" > < a id = "l01939" name = "l01939" > < / a > < span class = "lineno" > 1939< / span > IntegerValue MPlusCoefficient(< / div >
< div class = "line" > < a id = "l01940" name = "l01940" > < / a > < span class = "lineno" > 1940< / span > < span class = "keyword" > const< / span > std::vector< IntegerVariable> & x_vars,< / div >
< div class = "line" > < a id = "l01941" name = "l01941" > < / a > < span class = "lineno" > 1941< / span > < span class = "keyword" > const< / span > std::vector< LinearExpression> & exprs,< / div >
< div class = "line" > < a id = "l01942" name = "l01942" > < / a > < span class = "lineno" > 1942< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, int> < / a > & variable_partition,< / div >
< div class = "line" > < a id = "l01943" name = "l01943" > < / a > < span class = "lineno" > 1943< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > max_index, < span class = "keyword" > const< / span > IntegerTrail& integer_trail) {< / div >
< div class = "line" > < a id = "l01944" name = "l01944" > < / a > < span class = "lineno" > 1944< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = exprs[max_index].offset;< / div >
< div class = "line" > < a id = "l01945" name = "l01945" > < / a > < span class = "lineno" > 1945< / span > < span class = "comment" > // TODO(user): This algo is quadratic since GetCoefficientOfPositiveVar()< / span > < / div >
< div class = "line" > < a id = "l01946" name = "l01946" > < / a > < span class = "lineno" > 1946< / span > < span class = "comment" > // is linear. This can be optimized (better complexity) if needed.< / span > < / div >
< div class = "line" > < a id = "l01947" name = "l01947" > < / a > < span class = "lineno" > 1947< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > : x_vars) {< / div >
< div class = "line" > < a id = "l01948" name = "l01948" > < / a > < span class = "lineno" > 1948< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > target_index = variable_partition[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ];< / div >
< div class = "line" > < a id = "l01949" name = "l01949" > < / a > < span class = "lineno" > 1949< / span > < span class = "keywordflow" > if< / span > (max_index != target_index) {< / div >
< div class = "line" > < a id = "l01950" name = "l01950" > < / a > < span class = "lineno" > 1950< / span > < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > += MaxCornerDifference(< / div >
< div class = "line" > < a id = "l01951" name = "l01951" > < / a > < span class = "lineno" > 1951< / span > < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ab7b2c273b19bf885462dfa04611e4e62" > GetCoefficientOfPositiveVar< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , exprs[target_index]),< / div >
< div class = "line" > < a id = "l01952" name = "l01952" > < / a > < span class = "lineno" > 1952< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ab7b2c273b19bf885462dfa04611e4e62" > GetCoefficientOfPositiveVar< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , exprs[max_index]), integer_trail);< / div >
< div class = "line" > < a id = "l01953" name = "l01953" > < / a > < span class = "lineno" > 1953< / span > }< / div >
< div class = "line" > < a id = "l01954" name = "l01954" > < / a > < span class = "lineno" > 1954< / span > }< / div >
< div class = "line" > < a id = "l01955" name = "l01955" > < / a > < span class = "lineno" > 1955< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ;< / div >
< div class = "line" > < a id = "l01956" name = "l01956" > < / a > < span class = "lineno" > 1956< / span > }< / div >
< div class = "line" > < a id = "l01957" name = "l01957" > < / a > < span class = "lineno" > 1957< / span > < / div >
< div class = "line" > < a id = "l01958" name = "l01958" > < / a > < span class = "lineno" > 1958< / span > < span class = "comment" > // Compute the value of< / span > < / div >
< div class = "line" > < a id = "l01959" name = "l01959" > < / a > < span class = "lineno" > 1959< / span > < span class = "comment" > // rhs = wI(i)i * xi + Sum(k=1..d)(MPlusCoefficient_ki * zk)< / span > < / div >
< div class = "line" > < a id = "l01960" name = "l01960" > < / a > < span class = "lineno" > 1960< / span > < span class = "comment" > // for variable xi for given target index I(i).< / span > < / div >
< div class = "line" > < a id = "l01961" name = "l01961" > < / a > < span class = "lineno" > 1961< / span > < span class = "keywordtype" > double< / span > ComputeContribution(< / div >
< div class = "line" > < a id = "l01962" name = "l01962" > < / a > < span class = "lineno" > 1962< / span > < span class = "keyword" > const< / span > IntegerVariable xi_var, < span class = "keyword" > const< / span > std::vector< IntegerVariable> & z_vars,< / div >
< div class = "line" > < a id = "l01963" name = "l01963" > < / a > < span class = "lineno" > 1963< / span > < span class = "keyword" > const< / span > std::vector< LinearExpression> & exprs,< / div >
< div class = "line" > < a id = "l01964" name = "l01964" > < / a > < span class = "lineno" > 1964< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l01965" name = "l01965" > < / a > < span class = "lineno" > 1965< / span > < span class = "keyword" > const< / span > IntegerTrail& integer_trail, < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > target_index) {< / div >
< div class = "line" > < a id = "l01966" name = "l01966" > < / a > < span class = "lineno" > 1966< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a7cc25402ecd7591b4c39934dd656b1f9" > CHECK_GE< / a > (target_index, 0);< / div >
< div class = "line" > < a id = "l01967" name = "l01967" > < / a > < span class = "lineno" > 1967< / span > < a class = "code hl_define" href = "base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82" > CHECK_LT< / a > (target_index, exprs.size());< / div >
< div class = "line" > < a id = "l01968" name = "l01968" > < / a > < span class = "lineno" > 1968< / span > < span class = "keyword" > const< / span > LinearExpression& target_expr = exprs[target_index];< / div >
< div class = "line" > < a id = "l01969" name = "l01969" > < / a > < span class = "lineno" > 1969< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > xi_value = lp_values[xi_var];< / div >
< div class = "line" > < a id = "l01970" name = "l01970" > < / a > < span class = "lineno" > 1970< / span > < span class = "keyword" > const< / span > IntegerValue wt_i = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ab7b2c273b19bf885462dfa04611e4e62" > GetCoefficientOfPositiveVar< / a > (xi_var, target_expr);< / div >
< div class = "line" > < a id = "l01971" name = "l01971" > < / a > < span class = "lineno" > 1971< / span > < span class = "keywordtype" > double< / span > contrib = < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (wt_i) * xi_value;< / div >
< div class = "line" > < a id = "l01972" name = "l01972" > < / a > < span class = "lineno" > 1972< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > expr_index = 0; expr_index < exprs.size(); ++expr_index) {< / div >
< div class = "line" > < a id = "l01973" name = "l01973" > < / a > < span class = "lineno" > 1973< / span > < span class = "keywordflow" > if< / span > (expr_index == target_index) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l01974" name = "l01974" > < / a > < span class = "lineno" > 1974< / span > < span class = "keyword" > const< / span > LinearExpression& max_expr = exprs[expr_index];< / div >
< div class = "line" > < a id = "l01975" name = "l01975" > < / a > < span class = "lineno" > 1975< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > z_max_value = lp_values[z_vars[expr_index]];< / div >
< div class = "line" > < a id = "l01976" name = "l01976" > < / a > < span class = "lineno" > 1976< / span > < span class = "keyword" > const< / span > IntegerValue corner_value = MaxCornerDifference(< / div >
< div class = "line" > < a id = "l01977" name = "l01977" > < / a > < span class = "lineno" > 1977< / span > xi_var, wt_i, < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ab7b2c273b19bf885462dfa04611e4e62" > GetCoefficientOfPositiveVar< / a > (xi_var, max_expr),< / div >
< div class = "line" > < a id = "l01978" name = "l01978" > < / a > < span class = "lineno" > 1978< / span > integer_trail);< / div >
< div class = "line" > < a id = "l01979" name = "l01979" > < / a > < span class = "lineno" > 1979< / span > contrib += < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (corner_value) * z_max_value;< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l01980" name = "l01980" > < / a > < span class = "lineno" > 1980< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l01981" name = "l01981" > < / a > < span class = "lineno" > 1981< / span > < span class = "keywordflow" > return< / span > contrib;< / 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" > // namespace< / span > < / div >
< div class = "line" > < a id = "l01984" name = "l01984" > < / a > < span class = "lineno" > 1984< / span > < / div >
< div class = "line" > < a id = "l01985" name = "l01985" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a7fea62548e11ae728e506874f767bdd3" > 1985< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a7fea62548e11ae728e506874f767bdd3" > CreateLinMaxCutGenerator< / a > (< / div >
< div class = "line" > < a id = "l01986" name = "l01986" > < / a > < span class = "lineno" > 1986< / span > < span class = "keyword" > const< / span > IntegerVariable target, < span class = "keyword" > const< / span > std::vector< LinearExpression> & exprs,< / div >
< div class = "line" > < a id = "l01987" name = "l01987" > < / a > < span class = "lineno" > 1987< / span > < span class = "keyword" > const< / span > std::vector< IntegerVariable> & z_vars, < 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 = "l01988" name = "l01988" > < / a > < span class = "lineno" > 1988< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > result;< / div >
< div class = "line" > < a id = "l01989" name = "l01989" > < / a > < span class = "lineno" > 1989< / span > std::vector< IntegerVariable> x_vars;< / div >
< div class = "line" > < a id = "l01990" name = "l01990" > < / a > < span class = "lineno" > 1990< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > = {target};< / div >
< div class = "line" > < a id = "l01991" name = "l01991" > < / a > < span class = "lineno" > 1991< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > num_exprs = exprs.size();< / div >
< div class = "line" > < a id = "l01992" name = "l01992" > < / a > < span class = "lineno" > 1992< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < num_exprs; ++i) {< / div >
< div class = "line" > < a id = "l01993" name = "l01993" > < / a > < span class = "lineno" > 1993< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(z_vars[i]);< / div >
< div class = "line" > < a id = "l01994" name = "l01994" > < / a > < span class = "lineno" > 1994< / span > x_vars.insert(x_vars.end(), exprs[i].vars.begin(), exprs[i].vars.end());< / div >
< div class = "line" > < a id = "l01995" name = "l01995" > < / a > < span class = "lineno" > 1995< / span > }< / div >
< div class = "line" > < a id = "l01996" name = "l01996" > < / a > < span class = "lineno" > 1996< / span > < a class = "code hl_function" href = "namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d" > gtl::STLSortAndRemoveDuplicates< / a > (& x_vars);< / div >
< div class = "line" > < a id = "l01997" name = "l01997" > < / a > < span class = "lineno" > 1997< / span > < span class = "comment" > // All expressions should only contain positive variables.< / span > < / div >
< div class = "line" > < a id = "l01998" name = "l01998" > < / a > < span class = "lineno" > 1998< / span > < a class = "code hl_define" href = "base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006" > DCHECK< / a > (std::all_of(x_vars.begin(), x_vars.end(), [](IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) {< / div >
< div class = "line" > < a id = "l01999" name = "l01999" > < / a > < span class = "lineno" > 1999< / span > return VariableIsPositive(var);< / div >
< div class = "line" > < a id = "l02000" name = "l02000" > < / a > < span class = "lineno" > 2000< / span > }));< / div >
< div class = "line" > < a id = "l02001" name = "l02001" > < / a > < span class = "lineno" > 2001< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .insert(result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .end(), x_vars.begin(), x_vars.end());< / 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 > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > * integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l02004" name = "l02004" > < / a > < span class = "lineno" > 2004< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > generate_cuts< / a > =< / div >
< div class = "line" > < a id = "l02005" name = "l02005" > < / a > < span class = "lineno" > 2005< / span > [x_vars, z_vars, target, num_exprs, exprs, integer_trail, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ](< / div >
< div class = "line" > < a id = "l02006" name = "l02006" > < / a > < span class = "lineno" > 2006< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l02007" name = "l02007" > < / a > < span class = "lineno" > 2007< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > LinearConstraintManager< / a > * manager) {< / div >
< div class = "line" > < a id = "l02008" name = "l02008" > < / a > < span class = "lineno" > 2008< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, int> < / a > variable_partition(< / div >
< div class = "line" > < a id = "l02009" name = "l02009" > < / a > < span class = "lineno" > 2009< / span > lp_values.size(), -1);< / div >
< div class = "line" > < a id = "l02010" name = "l02010" > < / a > < span class = "lineno" > 2010< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > variable_partition_contrib(< / div >
< div class = "line" > < a id = "l02011" name = "l02011" > < / a > < span class = "lineno" > 2011< / span > lp_values.size(), std::numeric_limits< double> ::infinity());< / div >
< div class = "line" > < a id = "l02012" name = "l02012" > < / a > < span class = "lineno" > 2012< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > expr_index = 0; expr_index < num_exprs; ++expr_index) {< / div >
< div class = "line" > < a id = "l02013" name = "l02013" > < / a > < span class = "lineno" > 2013< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > : x_vars) {< / div >
< div class = "line" > < a id = "l02014" name = "l02014" > < / a > < span class = "lineno" > 2014< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > contribution = ComputeContribution(< / div >
< div class = "line" > < a id = "l02015" name = "l02015" > < / a > < span class = "lineno" > 2015< / span > < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , z_vars, exprs, lp_values, *integer_trail, expr_index);< / div >
< div class = "line" > < a id = "l02016" name = "l02016" > < / a > < span class = "lineno" > 2016< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > double< / span > prev_contribution = variable_partition_contrib[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ];< / div >
< div class = "line" > < a id = "l02017" name = "l02017" > < / a > < span class = "lineno" > 2017< / span > < span class = "keywordflow" > if< / span > (contribution < prev_contribution) {< / div >
< div class = "line" > < a id = "l02018" name = "l02018" > < / a > < span class = "lineno" > 2018< / span > variable_partition[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] = expr_index;< / div >
< div class = "line" > < a id = "l02019" name = "l02019" > < / a > < span class = "lineno" > 2019< / span > variable_partition_contrib[< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ] = contribution;< / 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 > }< / div >
2022-01-17 21:42:14 +01:00
< div class = "line" > < a id = "l02022" name = "l02022" > < / a > < span class = "lineno" > 2022< / span > }< / div >
2022-03-04 00:11:33 +01:00
< div class = "line" > < a id = "l02023" name = "l02023" > < / a > < span class = "lineno" > 2023< / span > < / div >
< div class = "line" > < a id = "l02024" name = "l02024" > < / a > < span class = "lineno" > 2024< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > LinearConstraintBuilder< / a > cut(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , < span class = "comment" > /*lb=*/< / span > IntegerValue(0),< / div >
< div class = "line" > < a id = "l02025" name = "l02025" > < / a > < span class = "lineno" > 2025< / span > < span class = "comment" > /*ub=*/< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > kMaxIntegerValue< / a > );< / div >
< div class = "line" > < a id = "l02026" name = "l02026" > < / a > < span class = "lineno" > 2026< / span > < span class = "keywordtype" > double< / span > violation = lp_values[target];< / div >
< div class = "line" > < a id = "l02027" name = "l02027" > < / a > < span class = "lineno" > 2027< / span > cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (target, IntegerValue(-1));< / div >
< div class = "line" > < a id = "l02028" name = "l02028" > < / a > < span class = "lineno" > 2028< / span > < / div >
< div class = "line" > < a id = "l02029" name = "l02029" > < / a > < span class = "lineno" > 2029< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerVariable xi_var : x_vars) {< / div >
< div class = "line" > < a id = "l02030" name = "l02030" > < / a > < span class = "lineno" > 2030< / span > < span class = "keyword" > const< / span > < span class = "keywordtype" > int< / span > input_index = variable_partition[xi_var];< / div >
< div class = "line" > < a id = "l02031" name = "l02031" > < / a > < span class = "lineno" > 2031< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_expression.html" > LinearExpression< / a > & expr = exprs[input_index];< / div >
< div class = "line" > < a id = "l02032" name = "l02032" > < / a > < span class = "lineno" > 2032< / span > < span class = "keyword" > const< / span > IntegerValue < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ab7b2c273b19bf885462dfa04611e4e62" > GetCoefficientOfPositiveVar< / a > (xi_var, expr);< / div >
< div class = "line" > < a id = "l02033" name = "l02033" > < / a > < span class = "lineno" > 2033< / span > < span class = "keywordflow" > if< / span > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > != IntegerValue(0)) {< / div >
< div class = "line" > < a id = "l02034" name = "l02034" > < / a > < span class = "lineno" > 2034< / span > cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (xi_var, < a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > );< / div >
< div class = "line" > < a id = "l02035" name = "l02035" > < / a > < span class = "lineno" > 2035< / span > }< / div >
< div class = "line" > < a id = "l02036" name = "l02036" > < / a > < span class = "lineno" > 2036< / span > violation -= < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (< a class = "code hl_variable" href = "variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587" > coeff< / a > ) * lp_values[xi_var];< / div >
< div class = "line" > < a id = "l02037" name = "l02037" > < / a > < span class = "lineno" > 2037< / span > }< / div >
< div class = "line" > < a id = "l02038" name = "l02038" > < / a > < span class = "lineno" > 2038< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > expr_index = 0; expr_index < num_exprs; ++expr_index) {< / div >
< div class = "line" > < a id = "l02039" name = "l02039" > < / a > < span class = "lineno" > 2039< / span > < span class = "keyword" > const< / span > IntegerVariable z_var = z_vars[expr_index];< / div >
< div class = "line" > < a id = "l02040" name = "l02040" > < / a > < span class = "lineno" > 2040< / span > < span class = "keyword" > const< / span > IntegerValue z_coeff = MPlusCoefficient(< / div >
< div class = "line" > < a id = "l02041" name = "l02041" > < / a > < span class = "lineno" > 2041< / span > x_vars, exprs, variable_partition, expr_index, *integer_trail);< / div >
< div class = "line" > < a id = "l02042" name = "l02042" > < / a > < span class = "lineno" > 2042< / span > < span class = "keywordflow" > if< / span > (z_coeff != IntegerValue(0)) {< / div >
< div class = "line" > < a id = "l02043" name = "l02043" > < / a > < span class = "lineno" > 2043< / span > cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (z_var, z_coeff);< / div >
< div class = "line" > < a id = "l02044" name = "l02044" > < / a > < span class = "lineno" > 2044< / span > }< / div >
< div class = "line" > < a id = "l02045" name = "l02045" > < / a > < span class = "lineno" > 2045< / span > violation -= < a class = "code hl_function" href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > ToDouble< / a > (z_coeff) * lp_values[z_var];< / div >
< div class = "line" > < a id = "l02046" name = "l02046" > < / a > < span class = "lineno" > 2046< / span > }< / div >
< div class = "line" > < a id = "l02047" name = "l02047" > < / a > < span class = "lineno" > 2047< / span > < span class = "keywordflow" > if< / span > (violation > 1e-2) {< / div >
< div class = "line" > < a id = "l02048" name = "l02048" > < / a > < span class = "lineno" > 2048< / span > manager-> AddCut(cut.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > Build< / a > (), < span class = "stringliteral" > " LinMax" < / span > , lp_values);< / div >
< div class = "line" > < a id = "l02049" name = "l02049" > < / a > < span class = "lineno" > 2049< / span > }< / div >
< div class = "line" > < a id = "l02050" name = "l02050" > < / a > < span class = "lineno" > 2050< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l02051" name = "l02051" > < / a > < span class = "lineno" > 2051< / span > };< / div >
< div class = "line" > < a id = "l02052" name = "l02052" > < / a > < span class = "lineno" > 2052< / span > < span class = "keywordflow" > return< / span > result;< / div >
< div class = "line" > < a id = "l02053" name = "l02053" > < / a > < span class = "lineno" > 2053< / span > }< / div >
< div class = "line" > < a id = "l02054" name = "l02054" > < / a > < span class = "lineno" > 2054< / span > < / div >
< div class = "line" > < a id = "l02055" name = "l02055" > < / a > < span class = "lineno" > 2055< / span > < span class = "keyword" > namespace < / span > {< / div >
< div class = "line" > < a id = "l02056" name = "l02056" > < / a > < span class = "lineno" > 2056< / span > < / div >
< div class = "line" > < a id = "l02057" name = "l02057" > < / a > < span class = "lineno" > 2057< / span > IntegerValue EvaluateMaxAffine(< / div >
< div class = "line" > < a id = "l02058" name = "l02058" > < / a > < span class = "lineno" > 2058< / span > < span class = "keyword" > const< / span > std::vector< std::pair< IntegerValue, IntegerValue> > & affines,< / div >
< div class = "line" > < a id = "l02059" name = "l02059" > < / a > < span class = "lineno" > 2059< / span > IntegerValue x) {< / div >
< div class = "line" > < a id = "l02060" name = "l02060" > < / a > < span class = "lineno" > 2060< / span > IntegerValue y = < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > ;< / div >
< div class = "line" > < a id = "l02061" name = "l02061" > < / a > < span class = "lineno" > 2061< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > < span class = "keyword" > auto< / span > & p : affines) {< / div >
< div class = "line" > < a id = "l02062" name = "l02062" > < / a > < span class = "lineno" > 2062< / span > y = < a class = "code hl_variable" href = "alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f" > std::max< / a > (y, x * p.first + p.second);< / div >
< div class = "line" > < a id = "l02063" name = "l02063" > < / a > < span class = "lineno" > 2063< / span > }< / div >
< div class = "line" > < a id = "l02064" name = "l02064" > < / a > < span class = "lineno" > 2064< / span > < span class = "keywordflow" > return< / span > y;< / div >
< div class = "line" > < a id = "l02065" name = "l02065" > < / a > < span class = "lineno" > 2065< / span > }< / div >
< div class = "line" > < a id = "l02066" name = "l02066" > < / a > < span class = "lineno" > 2066< / span > < / div >
< div class = "line" > < a id = "l02067" name = "l02067" > < / a > < span class = "lineno" > 2067< / span > } < span class = "comment" > // namespace< / 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" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#a88fabb0f851ff07d459b8be401162601" > 2069< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a88fabb0f851ff07d459b8be401162601" > BuildMaxAffineUpConstraint< / a > (< / div >
< div class = "line" > < a id = "l02070" name = "l02070" > < / a > < span class = "lineno" > 2070< / span > < span class = "keyword" > const< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_expression.html" > LinearExpression< / a > & target, IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ,< / div >
< div class = "line" > < a id = "l02071" name = "l02071" > < / a > < span class = "lineno" > 2071< / span > < span class = "keyword" > const< / span > std::vector< std::pair< IntegerValue, IntegerValue> > & affines,< / div >
< div class = "line" > < a id = "l02072" name = "l02072" > < / a > < span class = "lineno" > 2072< / span > < 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 = "l02073" name = "l02073" > < / a > < span class = "lineno" > 2073< / span > < span class = "keyword" > auto< / span > * integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l02074" name = "l02074" > < / a > < span class = "lineno" > 2074< / span > < span class = "keyword" > const< / span > IntegerValue x_min = integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > LevelZeroLowerBound< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l02075" name = "l02075" > < / a > < span class = "lineno" > 2075< / span > < span class = "keyword" > const< / span > IntegerValue x_max = integer_trail-> LevelZeroUpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l02076" name = "l02076" > < / a > < span class = "lineno" > 2076< / span > < / div >
< div class = "line" > < a id = "l02077" name = "l02077" > < / a > < span class = "lineno" > 2077< / span > < span class = "keyword" > const< / span > IntegerValue y_at_min = EvaluateMaxAffine(affines, x_min);< / div >
< div class = "line" > < a id = "l02078" name = "l02078" > < / a > < span class = "lineno" > 2078< / span > < span class = "keyword" > const< / span > IntegerValue y_at_max = EvaluateMaxAffine(affines, x_max);< / div >
< div class = "line" > < a id = "l02079" name = "l02079" > < / a > < span class = "lineno" > 2079< / span > < / div >
< div class = "line" > < a id = "l02080" name = "l02080" > < / a > < span class = "lineno" > 2080< / span > < span class = "comment" > // TODO(user): Be careful to not have any integer overflow in any of< / span > < / div >
< div class = "line" > < a id = "l02081" name = "l02081" > < / a > < span class = "lineno" > 2081< / span > < span class = "comment" > // the formula used here.< / span > < / div >
< div class = "line" > < a id = "l02082" name = "l02082" > < / a > < span class = "lineno" > 2082< / span > < span class = "keyword" > const< / span > IntegerValue delta_x = x_max - x_min;< / div >
< div class = "line" > < a id = "l02083" name = "l02083" > < / a > < span class = "lineno" > 2083< / span > < span class = "keyword" > const< / span > IntegerValue delta_y = y_at_max - y_at_min;< / div >
< div class = "line" > < a id = "l02084" name = "l02084" > < / a > < span class = "lineno" > 2084< / span > < / div >
< div class = "line" > < a id = "l02085" name = "l02085" > < / a > < span class = "lineno" > 2085< / span > < span class = "comment" > // target < = y_at_min + (delta_y / delta_x) * (var - x_min)< / span > < / div >
< div class = "line" > < a id = "l02086" name = "l02086" > < / a > < span class = "lineno" > 2086< / span > < span class = "comment" > // delta_x * target < = delta_x * y_at_min + delta_y * (var - x_min)< / span > < / div >
< div class = "line" > < a id = "l02087" name = "l02087" > < / a > < span class = "lineno" > 2087< / span > < span class = "comment" > // -delta_y * var + delta_x * target < = delta_x * y_at_min - delta_y * x_min< / span > < / div >
< div class = "line" > < a id = "l02088" name = "l02088" > < / a > < span class = "lineno" > 2088< / span > < span class = "keyword" > const< / span > IntegerValue rhs = delta_x * y_at_min - delta_y * x_min;< / div >
< div class = "line" > < a id = "l02089" name = "l02089" > < / a > < span class = "lineno" > 2089< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > LinearConstraintBuilder< / a > lc(< a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > kMinIntegerValue< / a > , rhs);< / div >
< div class = "line" > < a id = "l02090" name = "l02090" > < / a > < span class = "lineno" > 2090< / span > lc.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a49e8e4a987d39f4da335e1ed287bb8ad" > AddLinearExpression< / a > (target, delta_x);< / div >
< div class = "line" > < a id = "l02091" name = "l02091" > < / a > < span class = "lineno" > 2091< / span > lc.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , -delta_y);< / div >
< div class = "line" > < a id = "l02092" name = "l02092" > < / a > < span class = "lineno" > 2092< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > LinearConstraint< / a > < a class = "code hl_variable" href = "demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695" > ct< / a > = lc.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > Build< / a > ();< / div >
< div class = "line" > < a id = "l02093" name = "l02093" > < / a > < span class = "lineno" > 2093< / span > < / div >
< div class = "line" > < a id = "l02094" name = "l02094" > < / a > < span class = "lineno" > 2094< / span > < span class = "comment" > // Prevent to create constraints that can overflow.< / span > < / div >
< div class = "line" > < a id = "l02095" name = "l02095" > < / a > < span class = "lineno" > 2095< / span > < span class = "keywordflow" > if< / span > (!< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a0c5d040da1879626549b8877fa275d86" > ValidateLinearConstraintForOverflow< / a > (< a class = "code hl_variable" href = "demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695" > ct< / a > , *integer_trail)) {< / div >
< div class = "line" > < a id = "l02096" name = "l02096" > < / a > < span class = "lineno" > 2096< / span > < a class = "code hl_define" href = "base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927" > VLOG< / a > (2) < < < span class = "stringliteral" > " Linear constraint can cause overflow: " < / span > < < < a class = "code hl_variable" href = "demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695" > ct< / a > ;< / div >
< div class = "line" > < a id = "l02097" name = "l02097" > < / a > < span class = "lineno" > 2097< / span > < / div >
< div class = "line" > < a id = "l02098" name = "l02098" > < / a > < span class = "lineno" > 2098< / span > < span class = "comment" > // TODO(user): Change API instead of returning trivial constraint?< / span > < / div >
< div class = "line" > < a id = "l02099" name = "l02099" > < / a > < span class = "lineno" > 2099< / span > < a class = "code hl_variable" href = "demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695" > ct< / a > .Clear();< / div >
< div class = "line" > < a id = "l02100" name = "l02100" > < / a > < span class = "lineno" > 2100< / span > }< / div >
< div class = "line" > < a id = "l02101" name = "l02101" > < / a > < span class = "lineno" > 2101< / span > < / div >
< div class = "line" > < a id = "l02102" name = "l02102" > < / a > < span class = "lineno" > 2102< / span > < span class = "keywordflow" > return< / span > < a class = "code hl_variable" href = "demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695" > ct< / a > ;< / div >
< div class = "line" > < a id = "l02103" name = "l02103" > < / a > < span class = "lineno" > 2103< / span > }< / div >
< div class = "line" > < a id = "l02104" name = "l02104" > < / a > < span class = "lineno" > 2104< / span > < / div >
< div class = "line" > < a id = "l02105" name = "l02105" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#ab782d6f91aefca5ee81c3b622e862875" > 2105< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ab782d6f91aefca5ee81c3b622e862875" > CreateMaxAffineCutGenerator< / a > (< / div >
< div class = "line" > < a id = "l02106" name = "l02106" > < / a > < span class = "lineno" > 2106< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_linear_expression.html" > LinearExpression< / a > target, IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ,< / div >
< div class = "line" > < a id = "l02107" name = "l02107" > < / a > < span class = "lineno" > 2107< / span > std::vector< std::pair< IntegerValue, IntegerValue> > affines,< / div >
< div class = "line" > < a id = "l02108" name = "l02108" > < / a > < span class = "lineno" > 2108< / span > < span class = "keyword" > const< / span > std::string cut_name, < 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 = "l02109" name = "l02109" > < / a > < span class = "lineno" > 2109< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > result;< / div >
< div class = "line" > < a id = "l02110" name = "l02110" > < / a > < span class = "lineno" > 2110< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > = target.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_linear_expression.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > ;< / div >
< div class = "line" > < a id = "l02111" name = "l02111" > < / a > < span class = "lineno" > 2111< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > .push_back(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l02112" name = "l02112" > < / a > < span class = "lineno" > 2112< / span > < a class = "code hl_function" href = "namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d" > gtl::STLSortAndRemoveDuplicates< / a > (& result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > );< / div >
< div class = "line" > < a id = "l02113" name = "l02113" > < / a > < span class = "lineno" > 2113< / span > < / div >
< div class = "line" > < a id = "l02114" name = "l02114" > < / a > < span class = "lineno" > 2114< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_integer_trail.html" > IntegerTrail< / a > * integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l02115" name = "l02115" > < / a > < span class = "lineno" > 2115< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > generate_cuts< / a > =< / div >
< div class = "line" > < a id = "l02116" name = "l02116" > < / a > < span class = "lineno" > 2116< / span > [target, < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , affines, cut_name, integer_trail, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ](< / div >
< div class = "line" > < a id = "l02117" name = "l02117" > < / a > < span class = "lineno" > 2117< / span > < span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l02118" name = "l02118" > < / a > < span class = "lineno" > 2118< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > LinearConstraintManager< / a > * manager) {< / div >
< div class = "line" > < a id = "l02119" name = "l02119" > < / a > < span class = "lineno" > 2119< / span > < span class = "keywordflow" > if< / span > (integer_trail-> < a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_integer_trail.html#a523501d854b2ca8034d37c15e7c89117" > IsFixed< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > )) < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l02120" name = "l02120" > < / a > < span class = "lineno" > 2120< / span > manager-> AddCut(< a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a88fabb0f851ff07d459b8be401162601" > BuildMaxAffineUpConstraint< / a > (target, < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , affines, < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ),< / div >
< div class = "line" > < a id = "l02121" name = "l02121" > < / a > < span class = "lineno" > 2121< / span > cut_name, lp_values);< / div >
< div class = "line" > < a id = "l02122" name = "l02122" > < / a > < span class = "lineno" > 2122< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / span > ;< / div >
< div class = "line" > < a id = "l02123" name = "l02123" > < / a > < span class = "lineno" > 2123< / span > };< / div >
< div class = "line" > < a id = "l02124" name = "l02124" > < / a > < span class = "lineno" > 2124< / span > < span class = "keywordflow" > return< / span > result;< / div >
< div class = "line" > < a id = "l02125" name = "l02125" > < / a > < span class = "lineno" > 2125< / span > }< / div >
< div class = "line" > < a id = "l02126" name = "l02126" > < / a > < span class = "lineno" > 2126< / span > < / div >
< div class = "line" > < a id = "l02127" name = "l02127" > < / a > < span class = "lineno" > < a class = "line" href = "namespaceoperations__research_1_1sat.html#adf176ac81e34e8fd124d823ee0033f1a" > 2127< / a > < / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#adf176ac81e34e8fd124d823ee0033f1a" > CreateCliqueCutGenerator< / a > (< / div >
< div class = "line" > < a id = "l02128" name = "l02128" > < / a > < span class = "lineno" > 2128< / span > < span class = "keyword" > const< / span > std::vector< IntegerVariable> & base_variables, < 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 = "l02129" name = "l02129" > < / a > < span class = "lineno" > 2129< / span > < span class = "comment" > // Filter base_variables to only keep the one with a literal view, and< / span > < / div >
< div class = "line" > < a id = "l02130" name = "l02130" > < / a > < span class = "lineno" > 2130< / span > < span class = "comment" > // do the conversion.< / span > < / div >
< div class = "line" > < a id = "l02131" name = "l02131" > < / a > < span class = "lineno" > 2131< / span > std::vector< IntegerVariable> variables;< / div >
< div class = "line" > < a id = "l02132" name = "l02132" > < / a > < span class = "lineno" > 2132< / span > std::vector< Literal> literals;< / div >
< div class = "line" > < a id = "l02133" name = "l02133" > < / a > < span class = "lineno" > 2133< / span > absl::flat_hash_map< LiteralIndex, IntegerVariable> positive_map;< / div >
< div class = "line" > < a id = "l02134" name = "l02134" > < / a > < span class = "lineno" > 2134< / span > absl::flat_hash_map< LiteralIndex, IntegerVariable> negative_map;< / div >
< div class = "line" > < a id = "l02135" name = "l02135" > < / a > < span class = "lineno" > 2135< / span > < span class = "keyword" > auto< / span > * integer_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_integer_trail.html" > IntegerTrail< / a > > ();< / div >
< div class = "line" > < a id = "l02136" name = "l02136" > < / a > < span class = "lineno" > 2136< / span > < span class = "keyword" > auto< / span > * encoder = < 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_integer_encoder.html" > IntegerEncoder< / a > > ();< / div >
< div class = "line" > < a id = "l02137" name = "l02137" > < / a > < span class = "lineno" > 2137< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > IntegerVariable < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > : base_variables) {< / div >
< div class = "line" > < a id = "l02138" name = "l02138" > < / a > < span class = "lineno" > 2138< / span > < span class = "keywordflow" > if< / span > (integer_trail-> LowerBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) != IntegerValue(0)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02139" name = "l02139" > < / a > < span class = "lineno" > 2139< / span > < span class = "keywordflow" > if< / span > (integer_trail-> UpperBound(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ) != IntegerValue(1)) < span class = "keywordflow" > continue< / span > ;< / div >
< div class = "line" > < a id = "l02140" name = "l02140" > < / a > < span class = "lineno" > 2140< / span > < span class = "keyword" > const< / span > LiteralIndex literal_index = encoder-> GetAssociatedLiteral(< / div >
< div class = "line" > < a id = "l02141" name = "l02141" > < / a > < span class = "lineno" > 2141< / span > < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#ab3ba1ab2a4a6cdc0ea4324d409ddbe7e" > IntegerLiteral::GreaterOrEqual< / a > (< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > , IntegerValue(1)));< / div >
< div class = "line" > < a id = "l02142" name = "l02142" > < / a > < span class = "lineno" > 2142< / span > < span class = "keywordflow" > if< / span > (literal_index != < a class = "code hl_function" href = "namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31" > kNoLiteralIndex< / a > ) {< / div >
< div class = "line" > < a id = "l02143" name = "l02143" > < / a > < span class = "lineno" > 2143< / span > variables.push_back(< a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > );< / div >
< div class = "line" > < a id = "l02144" name = "l02144" > < / a > < span class = "lineno" > 2144< / span > literals.push_back(< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > (literal_index));< / div >
< div class = "line" > < a id = "l02145" name = "l02145" > < / a > < span class = "lineno" > 2145< / span > positive_map[literal_index] = < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ;< / div >
< div class = "line" > < a id = "l02146" name = "l02146" > < / a > < span class = "lineno" > 2146< / span > negative_map[< a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_literal.html" > Literal< / a > (literal_index).< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_literal.html#a239e1315c4e975a35537790ba0d913a7" > NegatedIndex< / a > ()] = < a class = "code hl_variable" href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > ;< / div >
< div class = "line" > < a id = "l02147" name = "l02147" > < / a > < span class = "lineno" > 2147< / span > }< / div >
< div class = "line" > < a id = "l02148" name = "l02148" > < / a > < span class = "lineno" > 2148< / span > }< / div >
< div class = "line" > < a id = "l02149" name = "l02149" > < / a > < span class = "lineno" > 2149< / span > < a class = "code hl_struct" href = "structoperations__research_1_1sat_1_1_cut_generator.html" > CutGenerator< / a > result;< / div >
< div class = "line" > < a id = "l02150" name = "l02150" > < / a > < span class = "lineno" > 2150< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > vars< / a > = variables;< / div >
< div class = "line" > < a id = "l02151" name = "l02151" > < / a > < span class = "lineno" > 2151< / span > < span class = "keyword" > auto< / span > * 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 = "l02152" name = "l02152" > < / a > < span class = "lineno" > 2152< / span > result.< a class = "code hl_variable" href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > generate_cuts< / a > =< / div >
< div class = "line" > < a id = "l02153" name = "l02153" > < / a > < span class = "lineno" > 2153< / span > [variables, literals, implication_graph, positive_map, negative_map,< / div >
< div class = "line" > < a id = "l02154" name = "l02154" > < / a > < span class = "lineno" > 2154< / span > < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > ](< span class = "keyword" > const< / span > < a class = "code hl_class" href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double> < / a > & lp_values,< / div >
< div class = "line" > < a id = "l02155" name = "l02155" > < / a > < span class = "lineno" > 2155< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > LinearConstraintManager< / a > * manager) {< / div >
< div class = "line" > < a id = "l02156" name = "l02156" > < / a > < span class = "lineno" > 2156< / span > std::vector< double> packed_values;< / div >
< div class = "line" > < a id = "l02157" name = "l02157" > < / a > < span class = "lineno" > 2157< / span > < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < literals.size(); ++i) {< / div >
< div class = "line" > < a id = "l02158" name = "l02158" > < / a > < span class = "lineno" > 2158< / span > packed_values.push_back(lp_values[variables[i]]);< / div >
< div class = "line" > < a id = "l02159" name = "l02159" > < / a > < span class = "lineno" > 2159< / span > }< / div >
< div class = "line" > < a id = "l02160" name = "l02160" > < / a > < span class = "lineno" > 2160< / span > < span class = "keyword" > const< / span > std::vector< std::vector< Literal> > at_most_ones =< / div >
< div class = "line" > < a id = "l02161" name = "l02161" > < / a > < span class = "lineno" > 2161< / span > implication_graph-> GenerateAtMostOnesWithLargeWeight(literals,< / div >
< div class = "line" > < a id = "l02162" name = "l02162" > < / a > < span class = "lineno" > 2162< / span > packed_values);< / div >
< div class = "line" > < a id = "l02163" name = "l02163" > < / a > < span class = "lineno" > 2163< / span > < / div >
< div class = "line" > < a id = "l02164" name = "l02164" > < / a > < span class = "lineno" > 2164< / span > < span class = "keywordflow" > for< / span > (< span class = "keyword" > const< / span > std::vector< Literal> & at_most_one : at_most_ones) {< / div >
< div class = "line" > < a id = "l02165" name = "l02165" > < / a > < span class = "lineno" > 2165< / span > < span class = "comment" > // We need to express such " at most one" in term of the initial< / span > < / div >
< div class = "line" > < a id = "l02166" name = "l02166" > < / a > < span class = "lineno" > 2166< / span > < span class = "comment" > // variables, so we do not use the< / span > < / div >
< div class = "line" > < a id = "l02167" name = "l02167" > < / a > < span class = "lineno" > 2167< / span > < span class = "comment" > // LinearConstraintBuilder::AddLiteralTerm() here.< / span > < / div >
< div class = "line" > < a id = "l02168" name = "l02168" > < / a > < span class = "lineno" > 2168< / span > < a class = "code hl_class" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > LinearConstraintBuilder< / a > builder(< / div >
< div class = "line" > < a id = "l02169" name = "l02169" > < / a > < span class = "lineno" > 2169< / span > < a class = "code hl_variable" href = "gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf" > model< / a > , IntegerValue(< a class = "code hl_variable" href = "alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045" > std::numeric_limits< int64_t> ::min< / a > ()),< / div >
< div class = "line" > < a id = "l02170" name = "l02170" > < / a > < span class = "lineno" > 2170< / span > IntegerValue(1));< / div >
< div class = "line" > < a id = "l02171" name = "l02171" > < / a > < span class = "lineno" > 2171< / 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 : at_most_one) {< / div >
< div class = "line" > < a id = "l02172" name = "l02172" > < / a > < span class = "lineno" > 2172< / span > < span class = "keywordflow" > if< / span > (positive_map.contains(l.Index())) {< / div >
< div class = "line" > < a id = "l02173" name = "l02173" > < / a > < span class = "lineno" > 2173< / span > builder.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (positive_map.at(l.Index()), IntegerValue(1));< / div >
< div class = "line" > < a id = "l02174" name = "l02174" > < / a > < span class = "lineno" > 2174< / span > } < span class = "keywordflow" > else< / span > {< / div >
< div class = "line" > < a id = "l02175" name = "l02175" > < / a > < span class = "lineno" > 2175< / span > < span class = "comment" > // Add 1 - X to the linear constraint.< / span > < / div >
< div class = "line" > < a id = "l02176" name = "l02176" > < / a > < span class = "lineno" > 2176< / span > builder.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > AddTerm< / a > (negative_map.at(l.Index()), IntegerValue(-1));< / div >
< div class = "line" > < a id = "l02177" name = "l02177" > < / a > < span class = "lineno" > 2177< / span > builder.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a322657f18d11f256cf3e03b0bd640d5a" > AddConstant< / a > (IntegerValue(1));< / 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 > }< / div >
< div class = "line" > < a id = "l02180" name = "l02180" > < / a > < span class = "lineno" > 2180< / span > < / div >
< div class = "line" > < a id = "l02181" name = "l02181" > < / a > < span class = "lineno" > 2181< / span > manager-> AddCut(builder.< a class = "code hl_function" href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > Build< / a > (), < span class = "stringliteral" > " clique" < / span > , lp_values);< / div >
< div class = "line" > < a id = "l02182" name = "l02182" > < / a > < span class = "lineno" > 2182< / span > }< / div >
< div class = "line" > < a id = "l02183" name = "l02183" > < / a > < span class = "lineno" > 2183< / span > < span class = "keywordflow" > return< / span > < span class = "keyword" > true< / 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" > return< / span > result;< / div >
< div class = "line" > < a id = "l02186" name = "l02186" > < / a > < span class = "lineno" > 2186< / span > }< / div >
< div class = "line" > < a id = "l02187" name = "l02187" > < / a > < span class = "lineno" > 2187< / span > < / div >
< div class = "line" > < a id = "l02188" name = "l02188" > < / a > < span class = "lineno" > 2188< / span > } < span class = "comment" > // namespace sat< / span > < / div >
< div class = "line" > < a id = "l02189" name = "l02189" > < / a > < span class = "lineno" > 2189< / 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 >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "abase_2logging_8h_html" > < div class = "ttname" > < a href = "base_2logging_8h.html" > logging.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< 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_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_ab25e01a2942b821d66371fc68d53f2eb" > < div class = "ttname" > < a href = "base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb" > CHECK_NE< / a > < / div > < div class = "ttdeci" > #define CHECK_NE(val1, val2)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "base_2logging_8h_source.html#l00704" > base/logging.h:704< / 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_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 >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "aclassabsl_1_1_strong_vector_html" > < div class = "ttname" > < a href = "classabsl_1_1_strong_vector.html" > absl::StrongVector< IntegerVariable, double > < / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_knapsack_solver_for_cuts_html" > < div class = "ttname" > < a href = "classoperations__research_1_1_knapsack_solver_for_cuts.html" > operations_research::KnapsackSolverForCuts< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "knapsack__solver__for__cuts_8h_source.html#l00301" > knapsack_solver_for_cuts.h:301< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_knapsack_solver_for_cuts_html_a3bd66bb6693c84e8b758c0d8a18ed9e5" > < div class = "ttname" > < a href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#a3bd66bb6693c84e8b758c0d8a18ed9e5" > operations_research::KnapsackSolverForCuts::best_solution< / a > < / div > < div class = "ttdeci" > bool best_solution(int item_id) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "knapsack__solver__for__cuts_8h_source.html#l00342" > knapsack_solver_for_cuts.h:342< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_knapsack_solver_for_cuts_html_a4bcd14198cbb6f2c3bea61c85015e07a" > < div class = "ttname" > < a href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#a4bcd14198cbb6f2c3bea61c85015e07a" > operations_research::KnapsackSolverForCuts::set_node_limit< / a > < / div > < div class = "ttdeci" > void set_node_limit(const int64_t node_limit)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "knapsack__solver__for__cuts_8h_source.html#l00337" > knapsack_solver_for_cuts.h:337< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_knapsack_solver_for_cuts_html_a902b91803b24fe467929767c65b6ee4f" > < div class = "ttname" > < a href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#a902b91803b24fe467929767c65b6ee4f" > operations_research::KnapsackSolverForCuts::Init< / a > < / div > < div class = "ttdeci" > void Init(const std::vector< double > & profits, const std::vector< double > & weights, const double capacity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "knapsack__solver__for__cuts_8cc_source.html#l00287" > knapsack_solver_for_cuts.cc:287< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_knapsack_solver_for_cuts_html_aab4a9c689632460b6b96f3d4bf22f86e" > < div class = "ttname" > < a href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#aab4a9c689632460b6b96f3d4bf22f86e" > operations_research::KnapsackSolverForCuts::Solve< / a > < / div > < div class = "ttdeci" > double Solve(TimeLimit *time_limit, bool *is_solution_optimal)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "knapsack__solver__for__cuts_8cc_source.html#l00321" > knapsack_solver_for_cuts.cc:321< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_knapsack_solver_for_cuts_html_afa66a5ae5f09a131d7fdb338b8a212ba" > < div class = "ttname" > < a href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#afa66a5ae5f09a131d7fdb338b8a212ba" > operations_research::KnapsackSolverForCuts::GetUpperBound< / a > < / div > < div class = "ttdeci" > double GetUpperBound()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "knapsack__solver__for__cuts_8h_source.html#l00320" > knapsack_solver_for_cuts.h:320< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1_knapsack_solver_for_cuts_html_afd53920302b4dcd6ef445bc52a001a5b" > < div class = "ttname" > < a href = "classoperations__research_1_1_knapsack_solver_for_cuts.html#afd53920302b4dcd6ef445bc52a001a5b" > operations_research::KnapsackSolverForCuts::set_solution_upper_bound_threshold< / a > < / div > < div class = "ttdeci" > void set_solution_upper_bound_threshold(const double solution_upper_bound_threshold)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "knapsack__solver__for__cuts_8h_source.html#l00331" > knapsack_solver_for_cuts.h:331< / 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_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_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_cover_cut_helper_html_ad86e161bb994fe49fa9c4298ebb5ae2d" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_cover_cut_helper.html#ad86e161bb994fe49fa9c4298ebb5ae2d" > operations_research::sat::CoverCutHelper::TrySimpleKnapsack< / a > < / div > < div class = "ttdeci" > bool TrySimpleKnapsack(const LinearConstraint base_ct, const std::vector< double > & lp_values, const std::vector< IntegerValue > & lower_bounds, const std::vector< IntegerValue > & upper_bounds)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01185" > cuts.cc:1185< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_implied_bounds_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_implied_bounds.html" > operations_research::sat::ImpliedBounds< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "implied__bounds_8h_source.html#l00082" > implied_bounds.h:82< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_implied_bounds_processor_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html" > operations_research::sat::ImpliedBoundsProcessor< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00062" > cuts.h:62< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_implied_bounds_processor_html_a7fb8d0b24091252e79aea6e5666f29e8" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#a7fb8d0b24091252e79aea6e5666f29e8" > operations_research::sat::ImpliedBoundsProcessor::ProcessUpperBoundedConstraint< / a > < / div > < div class = "ttdeci" > void ProcessUpperBoundedConstraint(const absl::StrongVector< IntegerVariable, double > & lp_values, LinearConstraint *cut)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01520" > cuts.cc:1520< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_implied_bounds_processor_html_ab354ebe396f7f5ad0c79ff2a928d9a40" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#ab354ebe396f7f5ad0c79ff2a928d9a40" > operations_research::sat::ImpliedBoundsProcessor::RecomputeCacheAndSeparateSomeImpliedBoundCuts< / a > < / div > < div class = "ttdeci" > void RecomputeCacheAndSeparateSomeImpliedBoundCuts(const absl::StrongVector< IntegerVariable, double > & lp_values)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01603" > cuts.cc:1603< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_implied_bounds_processor_html_abb0b7cc2e259fc8ebe8fd3dd55816b75" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_implied_bounds_processor.html#abb0b7cc2e259fc8ebe8fd3dd55816b75" > operations_research::sat::ImpliedBoundsProcessor::GetCachedImpliedBoundInfo< / a > < / div > < div class = "ttdeci" > BestImpliedBoundInfo GetCachedImpliedBoundInfo(IntegerVariable var)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01529" > cuts.cc:1529< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_integer_encoder_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_integer_encoder.html" > operations_research::sat::IntegerEncoder< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00362" > integer.h:362< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_integer_rounding_cut_helper_html_a66c8e6dc26260b69dcdf7668925dc3aa" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_integer_rounding_cut_helper.html#a66c8e6dc26260b69dcdf7668925dc3aa" > operations_research::sat::IntegerRoundingCutHelper::ComputeCut< / a > < / div > < div class = "ttdeci" > void ComputeCut(RoundingOptions options, const std::vector< double > & lp_values, const std::vector< IntegerValue > & lower_bounds, const std::vector< IntegerValue > & upper_bounds, ImpliedBoundsProcessor *ib_processor, LinearConstraint *cut)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00731" > cuts.cc:731< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_integer_trail_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_integer_trail.html" > operations_research::sat::IntegerTrail< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00620" > integer.h:620< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_integer_trail_html_a523501d854b2ca8034d37c15e7c89117" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_integer_trail.html#a523501d854b2ca8034d37c15e7c89117" > operations_research::sat::IntegerTrail::IsFixed< / a > < / div > < div class = "ttdeci" > bool IsFixed(IntegerVariable i) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l01453" > integer.h:1453< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_integer_trail_html_a9ab880b5e67213a0607c5c3935da9f08" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_integer_trail.html#a9ab880b5e67213a0607c5c3935da9f08" > operations_research::sat::IntegerTrail::LevelZeroUpperBound< / a > < / div > < div class = "ttdeci" > IntegerValue LevelZeroUpperBound(IntegerVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l01534" > integer.h:1534< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_integer_trail_html_aa68cc40c827bff2fb311040e2b848f9b" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_integer_trail.html#aa68cc40c827bff2fb311040e2b848f9b" > operations_research::sat::IntegerTrail::LevelZeroLowerBound< / a > < / div > < div class = "ttdeci" > IntegerValue LevelZeroLowerBound(IntegerVariable var) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l01529" > integer.h:1529< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_linear_constraint_builder_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html" > operations_research::sat::LinearConstraintBuilder< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00161" > sat/linear_constraint.h:161< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_linear_constraint_builder_html_a322657f18d11f256cf3e03b0bd640d5a" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a322657f18d11f256cf3e03b0bd640d5a" > operations_research::sat::LinearConstraintBuilder::AddConstant< / a > < / div > < div class = "ttdeci" > void AddConstant(IntegerValue value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00100" > linear_constraint.cc:100< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_linear_constraint_builder_html_a49e8e4a987d39f4da335e1ed287bb8ad" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a49e8e4a987d39f4da335e1ed287bb8ad" > operations_research::sat::LinearConstraintBuilder::AddLinearExpression< / a > < / div > < div class = "ttdeci" > void AddLinearExpression(const LinearExpression & expr)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00065" > linear_constraint.cc:65< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_linear_constraint_builder_html_a8ef32d79f50eb45bb9305c8b436cf6c4" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#a8ef32d79f50eb45bb9305c8b436cf6c4" > operations_research::sat::LinearConstraintBuilder::Build< / a > < / div > < div class = "ttdeci" > LinearConstraint Build()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00133" > linear_constraint.cc:133< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_linear_constraint_builder_html_ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_linear_constraint_builder.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > operations_research::sat::LinearConstraintBuilder::AddTerm< / a > < / div > < div class = "ttdeci" > void AddTerm(IntegerVariable var, IntegerValue coeff)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00039" > linear_constraint.cc:39< / a > < / div > < / div >
< div class = "ttc" id = "aclassoperations__research_1_1sat_1_1_linear_constraint_manager_html" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_linear_constraint_manager.html" > operations_research::sat::LinearConstraintManager< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint__manager_8h_source.html#l00050" > linear_constraint_manager.h:50< / 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_a239e1315c4e975a35537790ba0d913a7" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_literal.html#a239e1315c4e975a35537790ba0d913a7" > operations_research::sat::Literal::NegatedIndex< / a > < / div > < div class = "ttdeci" > LiteralIndex NegatedIndex() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00088" > sat_base.h:88< / 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_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_ad63c4461a1384629cb99413c6df8b9ca" > < div class = "ttname" > < a href = "classoperations__research_1_1sat_1_1_trail.html#ad63c4461a1384629cb99413c6df8b9ca" > operations_research::sat::Trail::CurrentDecisionLevel< / a > < / div > < div class = "ttdeci" > int CurrentDecisionLevel() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat__base_8h_source.html#l00358" > sat_base.h:358< / 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__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 = "acuts_8h_html" > < div class = "ttname" > < a href = "cuts_8h.html" > cuts.h< / a > < / div > < / div >
< div class = "ttc" id = "ademon__profiler_8cc_html_a05da18ca9c7b657a4a6ea24e07c9b695" > < div class = "ttname" > < a href = "demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695" > ct< / a > < / div > < div class = "ttdeci" > const Constraint * ct< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "demon__profiler_8cc_source.html#l00043" > demon_profiler.cc:43< / a > < / div > < / div >
< 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 >
< div class = "ttc" id = "aexpr__array_8cc_html_a472a99923cbe11ae7b5a5d157d9ad465" > < div class = "ttname" > < a href = "expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465" > var< / a > < / div > < div class = "ttdeci" > IntVar * var< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "expr__array_8cc_source.html#l01874" > expr_array.cc:1874< / 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 = "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 = "aimplied__bounds_8h_html" > < div class = "ttname" > < a href = "implied__bounds_8h.html" > implied_bounds.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "ainteger_8h_html" > < div class = "ttname" > < a href = "integer_8h.html" > integer.h< / a > < / div > < / div >
< div class = "ttc" id = "aknapsack__solver__for__cuts_8h_html" > < div class = "ttname" > < a href = "knapsack__solver__for__cuts_8h.html" > knapsack_solver_for_cuts.h< / a > < / div > < / div >
< div class = "ttc" id = "alinear__constraint__manager_8h_html" > < div class = "ttname" > < a href = "linear__constraint__manager_8h.html" > linear_constraint_manager.h< / 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 = "anamespacegtl_html_a288a1dc92da5d3ad62d4bc4cec9e8b1d" > < div class = "ttname" > < a href = "namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d" > gtl::STLSortAndRemoveDuplicates< / a > < / div > < div class = "ttdeci" > void STLSortAndRemoveDuplicates(T *v, const LessFunc & less_func)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "stl__util_8h_source.html#l00058" > stl_util.h:58< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1glop_html_afd6d278f9d061a91716c6770f2d723e8" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1glop.html#afd6d278f9d061a91716c6770f2d723e8" > operations_research::glop::ToDouble< / a > < / div > < div class = "ttdeci" > static double ToDouble(double f)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "lp__types_8h_source.html#l00069" > lp_types.h:69< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a06e2118f6735d033f7f43a939abe558d" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a06e2118f6735d033f7f43a939abe558d" > operations_research::sat::ConvertToKnapsackForm< / a > < / div > < div class = "ttdeci" > void ConvertToKnapsackForm(const LinearConstraint & constraint, std::vector< LinearConstraint > *knapsack_constraints, IntegerTrail *integer_trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00404" > cuts.cc:404< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a07823d046b027c81155f8a2f322cf813" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a07823d046b027c81155f8a2f322cf813" > operations_research::sat::FloorRatio< / a > < / div > < div class = "ttdeci" > IntegerValue FloorRatio(IntegerValue dividend, IntegerValue positive_divisor)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00098" > integer.h:98< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a0c5d040da1879626549b8877fa275d86" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a0c5d040da1879626549b8877fa275d86" > operations_research::sat::ValidateLinearConstraintForOverflow< / a > < / div > < div class = "ttdeci" > bool ValidateLinearConstraintForOverflow(const LinearConstraint & constraint, const IntegerTrail & integer_trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00385" > linear_constraint.cc:385< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a0c9e8fab437ba44c91b0493a74cde263" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a0c9e8fab437ba44c91b0493a74cde263" > operations_research::sat::AddProductTo< / a > < / div > < div class = "ttdeci" > bool AddProductTo(IntegerValue a, IntegerValue b, IntegerValue *result)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00121" > integer.h:121< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a1227e67513602591fb959e35c9de66e8" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8" > operations_research::sat::kMaxIntegerValue< / a > < / div > < div class = "ttdeci" > constexpr IntegerValue kMaxIntegerValue(std::numeric_limits< IntegerValue::ValueType > ::max() - 1)< / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a1de556a1559f25bd0819655d375f6c8e" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a1de556a1559f25bd0819655d375f6c8e" > operations_research::sat::GetPreprocessedLinearConstraint< / a > < / div > < div class = "ttdeci" > LinearConstraint GetPreprocessedLinearConstraint(const LinearConstraint & constraint, const absl::StrongVector< IntegerVariable, double > & lp_values, const IntegerTrail & integer_trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00266" > cuts.cc:266< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a1e30e51173c7e43a8c0b4668d5e3f050" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a1e30e51173c7e43a8c0b4668d5e3f050" > operations_research::sat::IntTypeAbs< / a > < / div > < div class = "ttdeci" > IntType IntTypeAbs(IntType t)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00085" > integer.h:85< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a25553837a2eba1b1fbb5ac0eac64ad15" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a25553837a2eba1b1fbb5ac0eac64ad15" > operations_research::sat::CreateAllDifferentCutGenerator< / a > < / div > < div class = "ttdeci" > CutGenerator CreateAllDifferentCutGenerator(const std::vector< AffineExpression > & exprs, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01876" > cuts.cc:1876< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a29b96869d2a821cf1d2e6099e7a0f51b" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a29b96869d2a821cf1d2e6099e7a0f51b" > operations_research::sat::CeilRatio< / a > < / div > < div class = "ttdeci" > IntegerValue CeilRatio(IntegerValue dividend, IntegerValue positive_divisor)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00089" > integer.h:89< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a2dbcb7017d468a17bdb30252af5c6c31" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31" > operations_research::sat::kNoLiteralIndex< / a > < / div > < div class = "ttdeci" > const LiteralIndex kNoLiteralIndex(-1)< / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a32f0016572d69bfcd1f3af811b2043ad" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a32f0016572d69bfcd1f3af811b2043ad" > operations_research::sat::CanFormValidKnapsackCover< / a > < / div > < div class = "ttdeci" > bool CanFormValidKnapsackCover(const LinearConstraint & preprocessed_constraint, const absl::StrongVector< IntegerVariable, double > & lp_values, const IntegerTrail & integer_trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00386" > cuts.cc:386< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a4393db2c15b2f92d7ef16ce6b38c8150" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a4393db2c15b2f92d7ef16ce6b38c8150" > operations_research::sat::RemoveZeroTerms< / a > < / div > < div class = "ttdeci" > void RemoveZeroTerms(LinearConstraint *constraint)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00234" > linear_constraint.cc:234< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a44bd0a015c444c2e2d58a002a09a1ea5" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a44bd0a015c444c2e2d58a002a09a1ea5" > operations_research::sat::GetFactorT< / a > < / div > < div class = "ttdeci" > IntegerValue GetFactorT(IntegerValue rhs_remainder, IntegerValue divisor, IntegerValue max_t)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00635" > cuts.cc:635< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a457076abfb3071fca80b8175363e3dfa" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a457076abfb3071fca80b8175363e3dfa" > operations_research::sat::GetKnapsackUpperBound< / a > < / div > < div class = "ttdeci" > double GetKnapsackUpperBound(std::vector< KnapsackItem > items, const double capacity)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00334" > cuts.cc:334< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a5316808a2d5007c3b489e844801385e5" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5" > operations_research::sat::kMinIntegerValue< / a > < / div > < div class = "ttdeci" > constexpr IntegerValue kMinIntegerValue(-kMaxIntegerValue.value())< / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a588b516182cd6d5d8c048dfd76bc5523" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a588b516182cd6d5d8c048dfd76bc5523" > operations_research::sat::CanBeFilteredUsingCutLowerBound< / a > < / div > < div class = "ttdeci" > bool CanBeFilteredUsingCutLowerBound(const LinearConstraint & preprocessed_constraint, const absl::StrongVector< IntegerVariable, double > & lp_values, const IntegerTrail & integer_trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00306" > cuts.cc:306< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a5bd8c44473618b7eafd33ba978db2f06" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06" > operations_research::sat::kNoIntegerVariable< / a > < / div > < div class = "ttdeci" > const IntegerVariable kNoIntegerVariable(-1)< / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a5d3aa6734674f8f81aac3895cde58d6d" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a5d3aa6734674f8f81aac3895cde58d6d" > operations_research::sat::MakeAllCoefficientsPositive< / a > < / div > < div class = "ttdeci" > void MakeAllCoefficientsPositive(LinearConstraint *constraint)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00247" > linear_constraint.cc:247< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a6314c72e08e179c06ce3b76747499b8c" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a6314c72e08e179c06ce3b76747499b8c" > operations_research::sat::CleanTermsAndFillConstraint< / a > < / div > < div class = "ttdeci" > void CleanTermsAndFillConstraint(std::vector< std::pair< IntegerVariable, IntegerValue > > *terms, ClassWithVarsAndCoeffs *output)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00277" > sat/linear_constraint.h:277< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a7f1ac774d4646a83631f8117f4ea03f5" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a7f1ac774d4646a83631f8117f4ea03f5" > operations_research::sat::PositiveVariable< / a > < / div > < div class = "ttdeci" > IntegerVariable PositiveVariable(IntegerVariable i)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00149" > integer.h:149< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a7fea62548e11ae728e506874f767bdd3" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a7fea62548e11ae728e506874f767bdd3" > operations_research::sat::CreateLinMaxCutGenerator< / a > < / div > < div class = "ttdeci" > CutGenerator CreateLinMaxCutGenerator(const IntegerVariable target, const std::vector< LinearExpression > & exprs, const std::vector< IntegerVariable > & z_vars, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01985" > cuts.cc:1985< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a83f714c395df7a814ed067125f567a0d" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a83f714c395df7a814ed067125f567a0d" > operations_research::sat::PositiveRemainder< / a > < / div > < div class = "ttdeci" > IntegerValue PositiveRemainder(IntegerValue dividend, IntegerValue positive_divisor)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00113" > integer.h:113< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a86a16fa3180f4ebc8ac36c16a2b49fac" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a86a16fa3180f4ebc8ac36c16a2b49fac" > operations_research::sat::CreatePositiveMultiplicationCutGenerator< / a > < / div > < div class = "ttdeci" > CutGenerator CreatePositiveMultiplicationCutGenerator(AffineExpression z, AffineExpression x, AffineExpression y, int linearization_level, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01358" > cuts.cc:1358< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a88fabb0f851ff07d459b8be401162601" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a88fabb0f851ff07d459b8be401162601" > operations_research::sat::BuildMaxAffineUpConstraint< / a > < / div > < div class = "ttdeci" > LinearConstraint BuildMaxAffineUpConstraint(const LinearExpression & target, IntegerVariable var, const std::vector< std::pair< IntegerValue, IntegerValue > > & affines, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l02069" > cuts.cc:2069< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a8c8db245a613f2fb46d917cd78100f83" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a8c8db245a613f2fb46d917cd78100f83" > operations_research::sat::CanBeFilteredUsingKnapsackUpperBound< / a > < / div > < div class = "ttdeci" > bool CanBeFilteredUsingKnapsackUpperBound(const LinearConstraint & constraint, const absl::StrongVector< IntegerVariable, double > & lp_values, const IntegerTrail & integer_trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00352" > cuts.cc:352< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a8e30df8580d6914abba28f43b6e4e667" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a8e30df8580d6914abba28f43b6e4e667" > operations_research::sat::GetSuperAdditiveRoundingFunction< / a > < / div > < div class = "ttdeci" > std::function< IntegerValue(IntegerValue)> GetSuperAdditiveRoundingFunction(IntegerValue rhs_remainder, IntegerValue divisor, IntegerValue t, IntegerValue max_scaling)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00643" > cuts.cc:643< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_a91e92ebb8d6c8bd62ae597625f443427" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#a91e92ebb8d6c8bd62ae597625f443427" > operations_research::sat::CreateSquareCutGenerator< / a > < / div > < div class = "ttdeci" > CutGenerator CreateSquareCutGenerator(AffineExpression y, AffineExpression x, int linearization_level, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l01452" > cuts.cc:1452< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_aa2ba15be9aeabce0142c726fbf880798" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#aa2ba15be9aeabce0142c726fbf880798" > operations_research::sat::MakeAllVariablesPositive< / a > < / div > < div class = "ttdeci" > void MakeAllVariablesPositive(LinearConstraint *constraint)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00258" > linear_constraint.cc:258< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_aae43e784db06c0974ce59ebbe8dd2b22" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22" > operations_research::sat::NegationOf< / a > < / div > < div class = "ttdeci" > std::vector< IntegerVariable > NegationOf(const std::vector< IntegerVariable > & vars)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8cc_source.html#l00047" > integer.cc:47< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_ab3ba1ab2a4a6cdc0ea4324d409ddbe7e" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#ab3ba1ab2a4a6cdc0ea4324d409ddbe7e" > operations_research::sat::GreaterOrEqual< / a > < / div > < div class = "ttdeci" > std::function< void(Model *)> GreaterOrEqual(IntegerVariable v, int64_t lb)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l01691" > integer.h:1691< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_ab782d6f91aefca5ee81c3b622e862875" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#ab782d6f91aefca5ee81c3b622e862875" > operations_research::sat::CreateMaxAffineCutGenerator< / a > < / div > < div class = "ttdeci" > CutGenerator CreateMaxAffineCutGenerator(LinearExpression target, IntegerVariable var, std::vector< std::pair< IntegerValue, IntegerValue > > affines, const std::string cut_name, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l02105" > cuts.cc:2105< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_ab7b2c273b19bf885462dfa04611e4e62" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#ab7b2c273b19bf885462dfa04611e4e62" > operations_research::sat::GetCoefficientOfPositiveVar< / a > < / div > < div class = "ttdeci" > IntegerValue GetCoefficientOfPositiveVar(const IntegerVariable var, const LinearExpression & expr)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00446" > linear_constraint.cc:446< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_ac158f737c8653b1fc1bd294ea2d3412d" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#ac158f737c8653b1fc1bd294ea2d3412d" > operations_research::sat::CreateKnapsackCoverCutGenerator< / a > < / div > < div class = "ttdeci" > CutGenerator CreateKnapsackCoverCutGenerator(const std::vector< LinearConstraint > & base_constraints, const std::vector< IntegerVariable > & vars, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00454" > cuts.cc:454< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_ac8b530afe36cf1521c919ca43429926d" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#ac8b530afe36cf1521c919ca43429926d" > operations_research::sat::ConstraintIsTriviallyTrue< / a > < / div > < div class = "ttdeci" > bool ConstraintIsTriviallyTrue(const LinearConstraint & constraint, const IntegerTrail & integer_trail)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00290" > cuts.cc:290< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_accb737ae1fad15d6798a4b8bc27cea51" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#accb737ae1fad15d6798a4b8bc27cea51" > operations_research::sat::LiftKnapsackCut< / a > < / div > < div class = "ttdeci" > bool LiftKnapsackCut(const LinearConstraint & constraint, const absl::StrongVector< IntegerVariable, double > & lp_values, const std::vector< IntegerValue > & cut_vars_original_coefficients, const IntegerTrail & integer_trail, TimeLimit *time_limit, LinearConstraint *cut)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l00187" > cuts.cc:187< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_adf176ac81e34e8fd124d823ee0033f1a" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#adf176ac81e34e8fd124d823ee0033f1a" > operations_research::sat::CreateCliqueCutGenerator< / a > < / div > < div class = "ttdeci" > CutGenerator CreateCliqueCutGenerator(const std::vector< IntegerVariable > & base_variables, Model *model)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8cc_source.html#l02127" > cuts.cc:2127< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_ae3c495e2e05950c578b01976701f9b2a" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#ae3c495e2e05950c578b01976701f9b2a" > operations_research::sat::DivideByGCD< / a > < / div > < div class = "ttdeci" > void DivideByGCD(LinearConstraint *constraint)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00220" > linear_constraint.cc:220< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_aea18a909121c1c2ba4a818298611f0b2" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#aea18a909121c1c2ba4a818298611f0b2" > operations_research::sat::ComputeActivity< / a > < / div > < div class = "ttdeci" > double ComputeActivity(const LinearConstraint & constraint, const absl::StrongVector< IntegerVariable, double > & values)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "linear__constraint_8cc_source.html#l00153" > linear_constraint.cc:153< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_1_1sat_html_aed77a1a7675c2f8568529a5a16247ec1" > < div class = "ttname" > < a href = "namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1" > operations_research::sat::ToDouble< / a > < / div > < div class = "ttdeci" > double ToDouble(IntegerValue value)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00077" > integer.h:77< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< 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_a111f44b9b9cf67a8e8d83794ac9f5291" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a111f44b9b9cf67a8e8d83794ac9f5291" > operations_research::CapAdd< / a > < / div > < div class = "ttdeci" > int64_t CapAdd(int64_t x, int64_t y)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "saturated__arithmetic_8h_source.html#l00126" > saturated_arithmetic.h:126< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a1e2ec837105d112356116f6308b73fca" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a1e2ec837105d112356116f6308b73fca" > operations_research::FloorRatio< / a > < / div > < div class = "ttdeci" > int64_t FloorRatio(int64_t value, int64_t positive_coeff)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sorted__interval__list_8cc_source.html#l00100" > sorted_interval_list.cc:100< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_a4a43d435871f16c321861fa5de32df82" > < div class = "ttname" > < a href = "namespaceoperations__research.html#a4a43d435871f16c321861fa5de32df82" > operations_research::CapSub< / a > < / div > < div class = "ttdeci" > int64_t CapSub(int64_t x, int64_t y)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "saturated__arithmetic_8h_source.html#l00158" > saturated_arithmetic.h:158< / a > < / div > < / div >
< div class = "ttc" id = "anamespaceoperations__research_html_aa64bf49d041052c7cb3f40f7496d7534" > < div class = "ttname" > < a href = "namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534" > operations_research::CapProd< / a > < / div > < div class = "ttdeci" > int64_t CapProd(int64_t x, int64_t y)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "saturated__arithmetic_8h_source.html#l00235" > saturated_arithmetic.h:235< / a > < / div > < / div >
< div class = "ttc" id = "apack_8cc_html_a4255f714cea26cdd64f6a0ee72d34a8c" > < div class = "ttname" > < a href = "pack_8cc.html#a4255f714cea26cdd64f6a0ee72d34a8c" > weight< / a > < / div > < div class = "ttdeci" > int64_t weight< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "pack_8cc_source.html#l00510" > pack.cc:510< / a > < / div > < / div >
< div class = "ttc" id = "arevised__simplex_8cc_html_af01c50e388647c921aa7d9c77f2b72b2" > < div class = "ttname" > < a href = "revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2" > ratio< / a > < / div > < div class = "ttdeci" > Fractional ratio< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "revised__simplex_8cc_source.html#l01981" > revised_simplex.cc:1981< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "arouting__filters_8cc_html_a8e4ee19dee0e00541dbe9bbc83d806ba" > < div class = "ttname" > < a href = "routing__filters_8cc.html#a8e4ee19dee0e00541dbe9bbc83d806ba" > coefficient< / a > < / div > < div class = "ttdeci" > int64_t coefficient< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "routing__filters_8cc_source.html#l00969" > routing_filters.cc:969< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "arouting__flow_8cc_html_a2acb49f4df5288066c43610bede123ec" > < div class = "ttname" > < a href = "routing__flow_8cc.html#a2acb49f4df5288066c43610bede123ec" > capacity< / a > < / div > < div class = "ttdeci" > int64_t capacity< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "routing__flow_8cc_source.html#l00151" > routing_flow.cc:151< / a > < / div > < / div >
< div class = "ttc" id = "asat_2linear__constraint_8h_html" > < div class = "ttname" > < a href = "sat_2linear__constraint_8h.html" > linear_constraint.h< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "asat_2lp__utils_8cc_html_a561d7bf12fc7674b3fe0ad2ba2e175a0" > < div class = "ttname" > < a href = "sat_2lp__utils_8cc.html#a561d7bf12fc7674b3fe0ad2ba2e175a0" > lower_bounds< / a > < / div > < div class = "ttdeci" > std::vector< double > lower_bounds< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2lp__utils_8cc_source.html#l00606" > sat/lp_utils.cc:606< / a > < / div > < / div >
< div class = "ttc" id = "asat_2lp__utils_8cc_html_a88215c8581662c40eec0fb8621c44af3" > < div class = "ttname" > < a href = "sat_2lp__utils_8cc.html#a88215c8581662c40eec0fb8621c44af3" > upper_bounds< / a > < / div > < div class = "ttdeci" > std::vector< double > upper_bounds< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2lp__utils_8cc_source.html#l00607" > sat/lp_utils.cc:607< / 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__base_8h_html" > < div class = "ttname" > < a href = "sat__base_8h.html" > sat_base.h< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "asaturated__arithmetic_8h_html" > < div class = "ttname" > < a href = "saturated__arithmetic_8h.html" > saturated_arithmetic.h< / a > < / div > < / div >
< div class = "ttc" id = "asharded__optimization__utils_8cc_html_a2a897122b37c5a906205687aecdb627b" > < div class = "ttname" > < a href = "sharded__optimization__utils_8cc.html#a2a897122b37c5a906205687aecdb627b" > l2_norm< / a > < / div > < div class = "ttdeci" > double l2_norm< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sharded__optimization__utils_8cc_source.html#l00102" > sharded_optimization_utils.cc:102< / a > < / div > < / div >
< div class = "ttc" id = "asorted__interval__list_8h_html" > < div class = "ttname" > < a href = "sorted__interval__list_8h.html" > sorted_interval_list.h< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "astl__util_8h_html" > < div class = "ttname" > < a href = "stl__util_8h.html" > stl_util.h< / 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 >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "astrong__vector_8h_html" > < div class = "ttname" > < a href = "strong__vector_8h.html" > strong_vector.h< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_affine_expression_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_affine_expression.html" > operations_research::sat::AffineExpression< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00233" > integer.h:233< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_affine_expression_html_a06a78ca452e0ab05313a836b024352f2" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_affine_expression.html#a06a78ca452e0ab05313a836b024352f2" > operations_research::sat::AffineExpression::constant< / a > < / div > < div class = "ttdeci" > IntegerValue constant< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00300" > integer.h:300< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_affine_expression_html_aa9c149604bc3f558e14c6d233ebc4b19" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_affine_expression.html#aa9c149604bc3f558e14c6d233ebc4b19" > operations_research::sat::AffineExpression::LpValue< / a > < / div > < div class = "ttdeci" > double LpValue(const absl::StrongVector< IntegerVariable, double > & lp_values) const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00278" > integer.h:278< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_affine_expression_html_ab6516f556b715738034b30d290c40214" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_affine_expression.html#ab6516f556b715738034b30d290c40214" > operations_research::sat::AffineExpression::var< / a > < / div > < div class = "ttdeci" > IntegerVariable var< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "integer_8h_source.html#l00298" > integer.h:298< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_cut_generator_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_cut_generator.html" > operations_research::sat::CutGenerator< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00047" > cuts.h:47< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_cut_generator_html_a73e4094f2d4e2adbe5e8d79a5b61fcd1" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_cut_generator.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > operations_research::sat::CutGenerator::vars< / a > < / div > < div class = "ttdeci" > std::vector< IntegerVariable > vars< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00048" > cuts.h:48< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_cut_generator_html_a79779673f2fe909d104c37f3b7cc5a48" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_cut_generator.html#a79779673f2fe909d104c37f3b7cc5a48" > operations_research::sat::CutGenerator::generate_cuts< / a > < / div > < div class = "ttdeci" > std::function< bool(const absl::StrongVector< IntegerVariable, double > & lp_values, LinearConstraintManager *manager)> generate_cuts< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00052" > cuts.h:52< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bound_entry_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bound_entry.html" > operations_research::sat::ImpliedBoundEntry< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "implied__bounds_8h_source.html#l00044" > implied_bounds.h:44< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html" > operations_research::sat::ImpliedBoundsProcessor::BestImpliedBoundInfo< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00122" > cuts.h:122< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info_html_a2c25b894240115eebb2e75e2d8491a79" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a2c25b894240115eebb2e75e2d8491a79" > operations_research::sat::ImpliedBoundsProcessor::BestImpliedBoundInfo::bound_diff< / a > < / div > < div class = "ttdeci" > IntegerValue bound_diff< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00126" > cuts.h:126< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info_html_a6d2822d5e07c3716efcdf73a4ae5eafc" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a6d2822d5e07c3716efcdf73a4ae5eafc" > operations_research::sat::ImpliedBoundsProcessor::BestImpliedBoundInfo::is_positive< / a > < / div > < div class = "ttdeci" > bool is_positive< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00125" > cuts.h:125< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info_html_a871eaa421116e3c7cd440b6299d0b74d" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#a871eaa421116e3c7cd440b6299d0b74d" > operations_research::sat::ImpliedBoundsProcessor::BestImpliedBoundInfo::bool_var< / a > < / div > < div class = "ttdeci" > IntegerVariable bool_var< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00127" > cuts.h:127< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info_html_ac11e010c276514d6402c772d0651f82f" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_best_implied_bound_info.html#ac11e010c276514d6402c772d0651f82f" > operations_research::sat::ImpliedBoundsProcessor::BestImpliedBoundInfo::slack_lp_value< / a > < / div > < div class = "ttdeci" > double slack_lp_value< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00124" > cuts.h:124< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html" > operations_research::sat::ImpliedBoundsProcessor::SlackInfo< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00092" > cuts.h:92< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info_html_a0ee34e5c6fbf075def1a6c2f0c42d040" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > operations_research::sat::ImpliedBoundsProcessor::SlackInfo::lb< / a > < / div > < div class = "ttdeci" > IntegerValue lb< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00098" > cuts.h:98< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info_html_a250583d63e8184c6f9f4deba1125e6bb" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a250583d63e8184c6f9f4deba1125e6bb" > operations_research::sat::ImpliedBoundsProcessor::SlackInfo::terms< / a > < / div > < div class = "ttdeci" > std::vector< std::pair< IntegerVariable, IntegerValue > > terms< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00094" > cuts.h:94< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info_html_a6e2915dc7e5345d6959390b53f026c5f" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#a6e2915dc7e5345d6959390b53f026c5f" > operations_research::sat::ImpliedBoundsProcessor::SlackInfo::ub< / a > < / div > < div class = "ttdeci" > IntegerValue ub< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00099" > cuts.h:99< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info_html_acd07f8397a2e61932c8ee17a4e300e23" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#acd07f8397a2e61932c8ee17a4e300e23" > operations_research::sat::ImpliedBoundsProcessor::SlackInfo::offset< / a > < / div > < div class = "ttdeci" > IntegerValue offset< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00095" > cuts.h:95< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info_html_adb47ac0cff7c9dc4dc5f101d38a91185" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_implied_bounds_processor_1_1_slack_info.html#adb47ac0cff7c9dc4dc5f101d38a91185" > operations_research::sat::ImpliedBoundsProcessor::SlackInfo::lp_value< / a > < / div > < div class = "ttdeci" > double lp_value< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00100" > cuts.h:100< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_knapsack_item_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_knapsack_item.html" > operations_research::sat::KnapsackItem< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00313" > cuts.h:313< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_knapsack_item_html_a3ff84545f00a56ba7584b2a7f2cef69c" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_knapsack_item.html#a3ff84545f00a56ba7584b2a7f2cef69c" > operations_research::sat::KnapsackItem::profit< / a > < / div > < div class = "ttdeci" > double profit< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00314" > cuts.h:314< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_knapsack_item_html_a99108733d00274978a4979dc072bd513" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_knapsack_item.html#a99108733d00274978a4979dc072bd513" > operations_research::sat::KnapsackItem::weight< / a > < / div > < div class = "ttdeci" > double weight< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00315" > cuts.h:315< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html" > operations_research::sat::LinearConstraint< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00041" > sat/linear_constraint.h:41< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html_a0ee34e5c6fbf075def1a6c2f0c42d040" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a0ee34e5c6fbf075def1a6c2f0c42d040" > operations_research::sat::LinearConstraint::lb< / a > < / div > < div class = "ttdeci" > IntegerValue lb< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00042" > sat/linear_constraint.h:42< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html_a4053d5aed2a34995e0aeb2042878ca7a" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a4053d5aed2a34995e0aeb2042878ca7a" > operations_research::sat::LinearConstraint::coeffs< / a > < / div > < div class = "ttdeci" > std::vector< IntegerValue > coeffs< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00045" > sat/linear_constraint.h:45< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html_a6e2915dc7e5345d6959390b53f026c5f" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a6e2915dc7e5345d6959390b53f026c5f" > operations_research::sat::LinearConstraint::ub< / a > < / div > < div class = "ttdeci" > IntegerValue ub< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00043" > sat/linear_constraint.h:43< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html_a73e4094f2d4e2adbe5e8d79a5b61fcd1" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > operations_research::sat::LinearConstraint::vars< / a > < / div > < div class = "ttdeci" > std::vector< IntegerVariable > vars< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00044" > sat/linear_constraint.h:44< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html_a764be64f3029f8b8e23511061d8de355" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html#a764be64f3029f8b8e23511061d8de355" > operations_research::sat::LinearConstraint::DebugString< / a > < / div > < div class = "ttdeci" > std::string DebugString() const< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00065" > sat/linear_constraint.h:65< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html_aa71d36872f416feaa853788a7a7a7ef8" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html#aa71d36872f416feaa853788a7a7a7ef8" > operations_research::sat::LinearConstraint::Clear< / a > < / div > < div class = "ttdeci" > void Clear()< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00055" > sat/linear_constraint.h:55< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_constraint_html_ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_constraint.html#ad65ddc0d04d71006a9ebe3b9dcfe2ce6" > operations_research::sat::LinearConstraint::AddTerm< / a > < / div > < div class = "ttdeci" > void AddTerm(IntegerVariable var, IntegerValue coeff)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00050" > sat/linear_constraint.h:50< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_expression_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_expression.html" > operations_research::sat::LinearExpression< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00096" > sat/linear_constraint.h:96< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_linear_expression_html_a73e4094f2d4e2adbe5e8d79a5b61fcd1" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_linear_expression.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1" > operations_research::sat::LinearExpression::vars< / a > < / div > < div class = "ttdeci" > std::vector< IntegerVariable > vars< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "sat_2linear__constraint_8h_source.html#l00097" > sat/linear_constraint.h:97< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_rounding_options_html" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_rounding_options.html" > operations_research::sat::RoundingOptions< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00217" > cuts.h:217< / a > < / div > < / div >
< div class = "ttc" id = "astructoperations__research_1_1sat_1_1_rounding_options_html_a01db407e90fac1c31c6705758a057908" > < div class = "ttname" > < a href = "structoperations__research_1_1sat_1_1_rounding_options.html#a01db407e90fac1c31c6705758a057908" > operations_research::sat::RoundingOptions::max_scaling< / a > < / div > < div class = "ttdeci" > IntegerValue max_scaling< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "cuts_8h_source.html#l00218" > cuts.h:218< / a > < / div > < / div >
2022-01-17 21:42:14 +01:00
< div class = "ttc" id = "atime__limit_8h_html" > < div class = "ttname" > < a href = "time__limit_8h.html" > time_limit.h< / a > < / div > < / div >
2022-03-04 00:11:33 +01:00
< 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 = "avariable__and__expressions_8cc_html_a98c17ae8d99a73259ea78de8c4b66254" > < div class = "ttname" > < a href = "variable__and__expressions_8cc.html#a98c17ae8d99a73259ea78de8c4b66254" > constant< / a > < / div > < div class = "ttdeci" > const double constant< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "variable__and__expressions_8cc_source.html#l00140" > variable_and_expressions.cc:140< / a > < / div > < / div >
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