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<div class="headertitle"><div class="title">max_hs.cc</div></div>
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<a href="max__hs_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>
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<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>
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<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>
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<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>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
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<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>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<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>
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<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>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// limitations under the License.</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include "<a class="code" href="max__hs_8h.html">ortools/sat/max_hs.h</a>"</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include <algorithm></span></div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <cmath></span></div>
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<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 <functional></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <limits></span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <utility></span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <vector></span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "absl/container/flat_hash_map.h"</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include "absl/container/flat_hash_set.h"</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include "absl/flags/flag.h"</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include "absl/meta/type_traits.h"</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include "absl/random/random.h"</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include "absl/strings/string_view.h"</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include "<a class="code" href="cleanup_8h.html">ortools/base/cleanup.h</a>"</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#include "<a class="code" href="strong__vector_8h.html">ortools/base/strong_vector.h</a>"</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#if !defined(__PORTABLE_PLATFORM__) && defined(USE_SCIP)</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#include "<a class="code" href="linear__solver_8h.html">ortools/linear_solver/linear_solver.h</a>"</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#endif </span><span class="comment">// __PORTABLE_PLATFORM__</span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="preprocessor">#include "ortools/linear_solver/linear_solver.pb.h"</span></div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="preprocessor">#include "ortools/sat/cp_model.pb.h"</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="preprocessor">#include "<a class="code" href="cp__model__mapping_8h.html">ortools/sat/cp_model_mapping.h</a>"</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor">#include "<a class="code" href="integer_8h.html">ortools/sat/integer.h</a>"</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="preprocessor">#include "<a class="code" href="integer__search_8h.html">ortools/sat/integer_search.h</a>"</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="preprocessor">#include "<a class="code" href="sat_2linear__constraint_8h.html">ortools/sat/linear_constraint.h</a>"</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="preprocessor">#include "<a class="code" href="linear__relaxation_8h.html">ortools/sat/linear_relaxation.h</a>"</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="preprocessor">#include "<a class="code" href="sat_2model_8h.html">ortools/sat/model.h</a>"</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="preprocessor">#include "<a class="code" href="optimization_8h.html">ortools/sat/optimization.h</a>"</span></div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="preprocessor">#include "<a class="code" href="sat__base_8h.html">ortools/sat/sat_base.h</a>"</span></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><span class="preprocessor">#include "ortools/sat/sat_parameters.pb.h"</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="preprocessor">#include "<a class="code" href="sat__solver_8h.html">ortools/sat/sat_solver.h</a>"</span></div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="preprocessor">#include "<a class="code" href="synchronization_8h.html">ortools/sat/synchronization.h</a>"</span></div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="preprocessor">#include "<a class="code" href="sat_2util_8h.html">ortools/sat/util.h</a>"</span></div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span><span class="preprocessor">#include "<a class="code" href="strong__integers_8h.html">ortools/util/strong_integers.h</a>"</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span><span class="preprocessor">#include "<a class="code" href="time__limit_8h.html">ortools/util/time_limit.h</a>"</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span><span class="comment">// TODO(user): Remove this flag when experiments are stable.</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"><a class="line" href="max__hs_8cc.html#a1bcd4379e7db62efdf5ffc541a76255f"> 54</a></span><a class="code hl_function" href="max__hs_8cc.html#a1bcd4379e7db62efdf5ffc541a76255f">ABSL_FLAG</a>(</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keywordtype">int</span>, max_hs_strategy, 0,</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="stringliteral">"MaxHsStrategy: 0 extract only objective variable, 1 extract all variables "</span></div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="stringliteral">"colocated with objective variables, 2 extract all variables in the "</span></div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="stringliteral">"linearization"</span>);</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span><span class="keyword">namespace </span>sat {</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> </div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_hitting_set_optimizer.html#a56e7c889c98a749d3fcbc3de39e9956d"> 63</a></span><a class="code hl_function" href="classoperations__research_1_1sat_1_1_hitting_set_optimizer.html#a56e7c889c98a749d3fcbc3de39e9956d">HittingSetOptimizer::HittingSetOptimizer</a>(</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">const</span> CpModelProto& <a class="code hl_variable" href="cp__model__solver_8cc.html#a6ac76d8a372013f67c4973012948ec84">model_proto</a>,</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">const</span> <a class="code hl_struct" href="structoperations__research_1_1sat_1_1_objective_definition.html">ObjectiveDefinition</a>& objective_definition,</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">const</span> std::function<<span class="keywordtype">void</span>()>& feasible_solution_observer, <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>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> : model_proto_(<a class="code hl_variable" href="cp__model__solver_8cc.html#a6ac76d8a372013f67c4973012948ec84">model_proto</a>),</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> objective_definition_(objective_definition),</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> feasible_solution_observer_(feasible_solution_observer),</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> model_(<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>),</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> sat_solver_(<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1sat_1_1_sat_solver.html">SatSolver</a>>()),</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> time_limit_(<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1_time_limit.html">TimeLimit</a>>()),</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> parameters_(*<a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<SatParameters>()),</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> random_(<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_model_random_generator.html">ModelRandomGenerator</a>>()),</div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> shared_response_(<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_shared_response_manager.html">SharedResponseManager</a>>()),</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</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>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> integer_encoder_(model_->GetOrCreate<<a class="code hl_class" href="classoperations__research_1_1sat_1_1_integer_encoder.html">IntegerEncoder</a>>()) {</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> request_.set_solver_specific_parameters(<span class="stringliteral">"limits/gap = 0"</span>);</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> request_.set_solver_type(MPModelRequest::SCIP_MIXED_INTEGER_PROGRAMMING);</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span>}</div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> </div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span><span class="keywordtype">bool</span> HittingSetOptimizer::ImportFromOtherWorkers() {</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">auto</span>* level_zero_callbacks = model_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_model.html#afb0c03e2a6201677c266f8a7eb77c2dc">GetOrCreate</a><<a class="code hl_struct" href="structoperations__research_1_1sat_1_1_level_zero_callback_helper.html">LevelZeroCallbackHelper</a>>();</div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& cb : level_zero_callbacks->callbacks) {</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="keywordflow">if</span> (!cb()) {</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#a4f7251fc4692363cf55796a6f3e267ea">NotifyThatModelIsUnsat</a>();</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> }</div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> }</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span>}</div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> </div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span><span class="comment">// Slightly different algo than FindCores() which aim to extract more cores, but</span></div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span><span class="comment">// not necessarily non-overlaping ones.</span></div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span><a class="code hl_enumeration" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b">SatSolver::Status</a> HittingSetOptimizer::FindMultipleCoresForMaxHs(</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> std::vector<Literal> assumptions,</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> std::vector<std::vector<Literal>>* cores) {</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> cores->clear();</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">const</span> <span class="keywordtype">double</span> saved_dlimit = time_limit_-><a class="code hl_function" href="classoperations__research_1_1_time_limit.html#a75214ecbf18d3e29566c78cac35f699b">GetDeterministicLimit</a>();</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="keyword">auto</span> cleanup = <a class="code hl_function" href="namespaceabsl.html#a01547ab811df98c71089487f394ec259">::absl::MakeCleanup</a>([<span class="keyword">this</span>, saved_dlimit]() {</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> time_limit_-><a class="code hl_function" href="classoperations__research_1_1_time_limit.html#af6b375b546e563ed7e6312123ce9c7a0">ChangeDeterministicLimit</a>(saved_dlimit);</div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> });</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="keywordtype">bool</span> first_loop = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="keywordflow">do</span> {</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keywordflow">if</span> (time_limit_-><a class="code hl_function" href="classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca">LimitReached</a>()) <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed">SatSolver::LIMIT_REACHED</a>;</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> </div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="comment">// The order of assumptions do not matter.</span></div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// Randomizing it should improve diversity.</span></div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> std::shuffle(assumptions.begin(), assumptions.end(), *random_);</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">const</span> <a class="code hl_enumeration" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b">SatSolver::Status</a> result =</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a17b20b0845d9e02829d417294aded36a">ResetAndSolveIntegerProblem</a>(assumptions, model_);</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keywordflow">if</span> (result != <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885">SatSolver::ASSUMPTIONS_UNSAT</a>) <span class="keywordflow">return</span> result;</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> std::vector<Literal> core = sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#acfbfa9df611cb625ff79785c05784580">GetLastIncompatibleDecisions</a>();</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">if</span> (sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9">parameters</a>().minimize_core()) {</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ab76a35e6ff810ad9ea8b58c7c11606cb">MinimizeCoreWithPropagation</a>(time_limit_, sat_solver_, &core);</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> }</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> <a class="code hl_define" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!core.empty());</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> cores->push_back(core);</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keywordflow">if</span> (!parameters_.find_multiple_cores()) <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> </div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="comment">// Pick a random literal from the core and remove it from the set of</span></div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="comment">// assumptions.</span></div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <a class="code hl_define" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!core.empty());</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">const</span> Literal random_literal =</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> core[absl::Uniform<int>(*random_, 0, core.size())];</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < assumptions.size(); ++i) {</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">if</span> (assumptions[i] == random_literal) {</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> <a class="code hl_function" href="namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2">std::swap</a>(assumptions[i], assumptions.back());</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> assumptions.pop_back();</div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> }</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> }</div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> </div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> <span class="comment">// Once we found at least one core, we impose a time limit to not spend</span></div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="comment">// too much time finding more.</span></div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="keywordflow">if</span> (first_loop) {</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> time_limit_-><a class="code hl_function" href="classoperations__research_1_1_time_limit.html#af6b375b546e563ed7e6312123ce9c7a0">ChangeDeterministicLimit</a>(<a class="code hl_variable" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::min</a>(</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> saved_dlimit, time_limit_-><a class="code hl_function" href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">GetElapsedDeterministicTime</a>() + 1.0));</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> first_loop = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> }</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> } <span class="keywordflow">while</span> (!assumptions.empty());</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885">SatSolver::ASSUMPTIONS_UNSAT</a>;</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span>}</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span><span class="keywordtype">int</span> HittingSetOptimizer::GetExtractedIndex(IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value() >= sat_var_to_mp_var_.<a class="code hl_function" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>()) <span class="keywordflow">return</span> kUnextracted;</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keywordflow">return</span> sat_var_to_mp_var_[<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span>}</div>
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<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> </div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span><span class="keywordtype">void</span> HittingSetOptimizer::ExtractObjectiveVariables() {</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> <span class="keyword">const</span> std::vector<IntegerVariable>& variables = objective_definition_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_objective_definition.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1">vars</a>;</div>
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<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> <span class="keyword">const</span> std::vector<IntegerValue>& <a class="code hl_variable" href="gscip__solver_8cc.html#aa59e74cc299dbf75fa6e2234dd0849a2">coefficients</a> = objective_definition_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_objective_definition.html#a4053d5aed2a34995e0aeb2042878ca7a">coeffs</a>;</div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> MPModelProto* hs_model = request_.mutable_model();</div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> </div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> <span class="comment">// Create the initial objective constraint.</span></div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="comment">// It is used to constraint the objective during search.</span></div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keywordflow">if</span> (obj_constraint_ == <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> obj_constraint_ = hs_model->add_constraint();</div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> obj_constraint_->set_lower_bound(-std::numeric_limits<double>::infinity());</div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> obj_constraint_->set_upper_bound(std::numeric_limits<double>::infinity());</div>
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> }</div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> </div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> <span class="comment">// Extract the objective variables.</span></div>
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < variables.size(); ++i) {</div>
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<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = variables[i];</div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> IntegerValue <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> = <a class="code hl_variable" href="gscip__solver_8cc.html#aa59e74cc299dbf75fa6e2234dd0849a2">coefficients</a>[i];</div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> </div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> <span class="comment">// Link the extracted variable to the positive variable.</span></div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keywordflow">if</span> (!<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae2544d2a3a5ef4c78f8e5891f104ab41">VariableIsPositive</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</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>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</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>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> }</div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> </div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> <span class="comment">// Normalized objective variables expects positive coefficients.</span></div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> > 0) {</div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> normalized_objective_variables_.push_back(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> normalized_objective_coefficients_.push_back(<a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a>);</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> normalized_objective_variables_.push_back(<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>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> normalized_objective_coefficients_.push_back(-<a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a>);</div>
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> }</div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> </div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="comment">// Extract.</span></div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = hs_model->variable_size();</div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> obj_constraint_->add_var_index(<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
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<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> obj_constraint_->add_coefficient(<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>));</div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> </div>
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<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> MPVariableProto* var_proto = hs_model->add_variable();</div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> var_proto->set_lower_bound(<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#ab857cd2aead68952d9fe92a8ad8d3ac9">LowerBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div>
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> var_proto->set_upper_bound(<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#a8b6d5a25e6ad3d28a85b1924471e2cac">UpperBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div>
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<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> var_proto->set_objective_coefficient(<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>));</div>
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<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> var_proto->set_is_integer(<span class="keyword">true</span>);</div>
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<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> </div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="comment">// Store extraction info.</span></div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> <span class="keyword">const</span> <span class="keywordtype">int</span> max_index = <a class="code hl_variable" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value(), <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="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>());</div>
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<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> <span class="keywordflow">if</span> (max_index >= sat_var_to_mp_var_.<a class="code hl_function" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>()) {</div>
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<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> sat_var_to_mp_var_.<a class="code hl_function" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(max_index + 1, -1);</div>
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> }</div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> sat_var_to_mp_var_[<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>;</div>
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<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> sat_var_to_mp_var_[<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="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>;</div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> extracted_variables_info_.push_back({<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, var_proto});</div>
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<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> }</div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span>}</div>
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<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> </div>
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<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span><span class="keywordtype">void</span> HittingSetOptimizer::ExtractAdditionalVariables(</div>
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<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="keyword">const</span> std::vector<IntegerVariable>& to_extract) {</div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> MPModelProto* hs_model = request_.mutable_model();</div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> </div>
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<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Extract "</span> << to_extract.size() << <span class="stringliteral">" additional variables"</span>;</div>
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<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keywordflow">for</span> (IntegerVariable tmp_var : to_extract) {</div>
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<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="keywordflow">if</span> (GetExtractedIndex(tmp_var) != kUnextracted) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> </div>
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<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> <span class="comment">// Use the positive variable for the domain.</span></div>
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<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">const</span> IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a7f1ac774d4646a83631f8117f4ea03f5">PositiveVariable</a>(tmp_var);</div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> </div>
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = hs_model->variable_size();</div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> MPVariableProto* var_proto = hs_model->add_variable();</div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> var_proto->set_lower_bound(<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#ab857cd2aead68952d9fe92a8ad8d3ac9">LowerBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div>
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<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> var_proto->set_upper_bound(<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#a8b6d5a25e6ad3d28a85b1924471e2cac">UpperBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div>
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<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> var_proto->set_is_integer(<span class="keyword">true</span>);</div>
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<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div>
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<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> <span class="comment">// Store extraction info.</span></div>
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> <span class="keyword">const</span> <span class="keywordtype">int</span> max_index = <a class="code hl_variable" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value(), <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="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>());</div>
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<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <span class="keywordflow">if</span> (max_index >= sat_var_to_mp_var_.<a class="code hl_function" href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">size</a>()) {</div>
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<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> sat_var_to_mp_var_.<a class="code hl_function" href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">resize</a>(max_index + 1, -1);</div>
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<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> }</div>
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<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> sat_var_to_mp_var_[<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>;</div>
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<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> sat_var_to_mp_var_[<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="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>;</div>
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<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> extracted_variables_info_.push_back({<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, var_proto});</div>
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<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> }</div>
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<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span>}</div>
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<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> </div>
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<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span><span class="comment">// This code will use heuristics to decide which non-objective variables to</span></div>
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span><span class="comment">// extract:</span></div>
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<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span><span class="comment">// 0: no additional variables.</span></div>
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<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span><span class="comment">// 1: any variable appearing in the same constraint as an objective variable.</span></div>
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<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span><span class="comment">// 2: all variables appearing in the linear relaxation.</span></div>
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<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span><span class="comment">//</span></div>
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<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span><span class="comment">// TODO(user): We could also decide to extract all if small enough.</span></div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span>std::vector<IntegerVariable></div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span>HittingSetOptimizer::ComputeAdditionalVariablesToExtract() {</div>
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<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> absl::flat_hash_set<IntegerVariable> result_set;</div>
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<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> <span class="keywordflow">if</span> (absl::GetFlag(FLAGS_max_hs_strategy) == 0) <span class="keywordflow">return</span> {};</div>
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<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> extract_all = absl::GetFlag(FLAGS_max_hs_strategy) == 2;</div>
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<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> </div>
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<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<Literal>& literals : relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a0bffb74eb458b339aa75f20b6c982a60">at_most_ones</a>) {</div>
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<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> <span class="keywordtype">bool</span> found_at_least_one = extract_all;</div>
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<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal <a class="code hl_variable" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : literals) {</div>
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<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <span class="keywordflow">if</span> (GetExtractedIndex(integer_encoder_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_encoder.html#a308a6df2722f2c0f36ec8888f4458b41">GetLiteralView</a>(<a class="code hl_variable" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) !=</div>
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<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> kUnextracted) {</div>
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> found_at_least_one = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> }</div>
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<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> <span class="keywordflow">if</span> (found_at_least_one) <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> }</div>
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="keywordflow">if</span> (!found_at_least_one) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal <a class="code hl_variable" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : literals) {</div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> <span class="keyword">const</span> IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = integer_encoder_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_encoder.html#a308a6df2722f2c0f36ec8888f4458b41">GetLiteralView</a>(<a class="code hl_variable" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div>
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> <span class="keywordflow">if</span> (GetExtractedIndex(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) == kUnextracted) {</div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> result_set.insert(<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>));</div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> }</div>
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> }</div>
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<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> }</div>
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> </div>
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> LinearConstraint& linear : relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a787dea05b34122764c7fb5fd13e9a1c9">linear_constraints</a>) {</div>
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> <span class="keywordtype">bool</span> found_at_least_one = extract_all;</div>
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</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> : linear.vars) {</div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> <span class="keywordflow">if</span> (GetExtractedIndex(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) != kUnextracted) {</div>
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> found_at_least_one = <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> }</div>
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="keywordflow">if</span> (found_at_least_one) <span class="keywordflow">break</span>;</div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> }</div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> <span class="keywordflow">if</span> (!found_at_least_one) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</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> : linear.vars) {</div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> <span class="keywordflow">if</span> (GetExtractedIndex(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) == kUnextracted) {</div>
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> result_set.insert(<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>));</div>
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> }</div>
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> }</div>
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<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> }</div>
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> </div>
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> std::vector<IntegerVariable> result(result_set.begin(), result_set.end());</div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> std::sort(result.begin(), result.end());</div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> </div>
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<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> <span class="keywordflow">return</span> result;</div>
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<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span>}</div>
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<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> </div>
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<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span><span class="keywordtype">void</span> HittingSetOptimizer::ProjectAndAddAtMostOne(</div>
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<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keyword">const</span> std::vector<Literal>& literals) {</div>
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<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> LinearConstraintBuilder builder(model_, 0, 1);</div>
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<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal& <a class="code hl_variable" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : literals) {</div>
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<div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> <span class="keywordflow">if</span> (!builder.AddLiteralTerm(<a class="code hl_variable" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, 1)) {</div>
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<div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(3) << <span class="stringliteral">"Could not extract literal "</span> << <a class="code hl_variable" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>;</div>
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<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> }</div>
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<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> }</div>
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<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> </div>
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<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="keywordflow">if</span> (ProjectAndAddLinear(builder.Build()) != <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> num_extracted_at_most_ones_++;</div>
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<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> }</div>
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<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span>}</div>
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<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> </div>
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<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span>MPConstraintProto* HittingSetOptimizer::ProjectAndAddLinear(</div>
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<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> <span class="keyword">const</span> LinearConstraint& linear) {</div>
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<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> <span class="keywordtype">int</span> num_extracted_variables = 0;</div>
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<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < linear.vars.size(); ++i) {</div>
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<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> <span class="keywordflow">if</span> (GetExtractedIndex(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a7f1ac774d4646a83631f8117f4ea03f5">PositiveVariable</a>(linear.vars[i])) != kUnextracted) {</div>
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<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> num_extracted_variables++;</div>
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<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> }</div>
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<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> }</div>
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<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> <span class="keywordflow">if</span> (num_extracted_variables <= 1) <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
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<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> </div>
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<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> MPConstraintProto* <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = request_.mutable_model()->add_constraint();</div>
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<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> ProjectLinear(linear, <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div>
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<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>;</div>
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<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span>}</div>
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<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> </div>
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<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span><span class="keywordtype">void</span> HittingSetOptimizer::ProjectLinear(<span class="keyword">const</span> LinearConstraint& linear,</div>
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<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> MPConstraintProto* <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>) {</div>
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<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> IntegerValue lb = linear.lb;</div>
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<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> IntegerValue ub = linear.ub;</div>
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<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> </div>
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<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < linear.vars.size(); ++i) {</div>
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<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> <span class="keyword">const</span> IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = linear.vars[i];</div>
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<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> <span class="keyword">const</span> IntegerValue <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> = linear.coeffs[i];</div>
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<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = GetExtractedIndex(<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>));</div>
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<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> negated = !<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae2544d2a3a5ef4c78f8e5891f104ab41">VariableIsPositive</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> != kUnextracted) {</div>
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<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->add_var_index(<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
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<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span> <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->add_coefficient(negated ? -<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>) : <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>));</div>
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<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</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>
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|
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</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>
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<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> </div>
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<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> > 0) {</div>
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<div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> <span class="keywordflow">if</span> (lb != <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5">kMinIntegerValue</a>) lb -= <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> * var_ub;</div>
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<div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> <span class="keywordflow">if</span> (ub != <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8">kMaxIntegerValue</a>) ub -= <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> * var_lb;</div>
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<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> <span class="keywordflow">if</span> (lb != <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a5316808a2d5007c3b489e844801385e5">kMinIntegerValue</a>) lb -= <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> * var_lb;</div>
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<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span> <span class="keywordflow">if</span> (ub != <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8">kMaxIntegerValue</a>) ub -= <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> * var_ub;</div>
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<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> }</div>
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<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span> }</div>
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<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> }</div>
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<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> </div>
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<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->set_lower_bound(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1">ToDouble</a>(lb));</div>
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<div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->set_upper_bound(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1">ToDouble</a>(ub));</div>
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<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span>}</div>
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<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> </div>
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<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span><span class="keywordtype">bool</span> HittingSetOptimizer::ComputeInitialMpModel() {</div>
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<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> <span class="keywordflow">if</span> (!ImportFromOtherWorkers()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> </div>
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<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> ExtractObjectiveVariables();</div>
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<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> </div>
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<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> <span class="comment">// Linearize the constraints from the model.</span></div>
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<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> : model_proto_.constraints()) {</div>
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<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a1ccfd912c87b8ca68a7fe0d62d7f49bc">TryToLinearizeConstraint</a>(model_proto_, <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <span class="comment">/*linearization_level=*/</span>2,</div>
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<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> model_, &relaxation_);</div>
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<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span> }</div>
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<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span> </div>
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<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> ExtractAdditionalVariables(ComputeAdditionalVariablesToExtract());</div>
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<div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span> </div>
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<div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> <span class="comment">// Build the MPModel from the linear relaxation.</span></div>
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<div class="line"><a id="l00363" name="l00363"></a><span class="lineno"> 363</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& literals : relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a0bffb74eb458b339aa75f20b6c982a60">at_most_ones</a>) {</div>
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<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> ProjectAndAddAtMostOne(literals);</div>
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<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> }</div>
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<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> <span class="keywordflow">if</span> (num_extracted_at_most_ones_ > 0) {</div>
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<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Projected "</span> << num_extracted_at_most_ones_ << <span class="stringliteral">"/"</span></div>
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<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> << relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a0bffb74eb458b339aa75f20b6c982a60">at_most_ones</a>.size() << <span class="stringliteral">" at_most_ones constraints"</span>;</div>
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<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> }</div>
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<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> </div>
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<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a787dea05b34122764c7fb5fd13e9a1c9">linear_constraints</a>.size(); ++i) {</div>
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<div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span> MPConstraintProto* <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> =</div>
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<div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> ProjectAndAddLinear(relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a787dea05b34122764c7fb5fd13e9a1c9">linear_constraints</a>[i]);</div>
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<div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> != <span class="keyword">nullptr</span>) linear_extract_info_.push_back({i, <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>});</div>
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<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> }</div>
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<div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> <span class="keywordflow">if</span> (!linear_extract_info_.empty()) {</div>
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<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Projected "</span> << linear_extract_info_.size() << <span class="stringliteral">"/"</span></div>
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<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> << relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a787dea05b34122764c7fb5fd13e9a1c9">linear_constraints</a>.size() << <span class="stringliteral">" linear constraints"</span>;</div>
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<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> }</div>
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<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span>}</div>
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<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span> </div>
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<div class="line"><a id="l00383" name="l00383"></a><span class="lineno"> 383</span><span class="keywordtype">void</span> HittingSetOptimizer::TightenMpModel() {</div>
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<div class="line"><a id="l00384" name="l00384"></a><span class="lineno"> 384</span> <span class="comment">// Update the MP variables bounds from the SAT level 0 bounds.</span></div>
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<div class="line"><a id="l00385" name="l00385"></a><span class="lineno"> 385</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& [<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, var_proto] : extracted_variables_info_) {</div>
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<div class="line"><a id="l00386" name="l00386"></a><span class="lineno"> 386</span> var_proto->set_lower_bound(<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#ab857cd2aead68952d9fe92a8ad8d3ac9">LowerBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div>
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<div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> var_proto->set_upper_bound(<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#a8b6d5a25e6ad3d28a85b1924471e2cac">UpperBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div>
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<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> }</div>
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<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span> </div>
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<div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> <span class="keywordtype">int</span> tightened = 0;</div>
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<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& [<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>, <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>] : linear_extract_info_) {</div>
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<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> <span class="keyword">const</span> <span class="keywordtype">double</span> original_lb = <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->lower_bound();</div>
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<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> <span class="keyword">const</span> <span class="keywordtype">double</span> original_ub = <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->upper_bound();</div>
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<div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div>
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<div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> ProjectLinear(relaxation_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a787dea05b34122764c7fb5fd13e9a1c9">linear_constraints</a>[<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>], <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div>
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<div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> <span class="keywordflow">if</span> (original_lb != <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->lower_bound() || original_ub != <a class="code hl_variable" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->upper_bound()) {</div>
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<div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span> tightened++;</div>
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<div class="line"><a id="l00398" name="l00398"></a><span class="lineno"> 398</span> }</div>
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<div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> }</div>
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<div class="line"><a id="l00400" name="l00400"></a><span class="lineno"> 400</span> <span class="keywordflow">if</span> (tightened > 0) {</div>
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<div class="line"><a id="l00401" name="l00401"></a><span class="lineno"> 401</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Tightened "</span> << tightened << <span class="stringliteral">" linear constraints"</span>;</div>
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<div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> }</div>
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<div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span>}</div>
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<div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> </div>
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<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span><span class="keywordtype">bool</span> HittingSetOptimizer::ProcessSolution() {</div>
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<div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> <span class="keyword">const</span> std::vector<IntegerVariable>& variables = objective_definition_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_objective_definition.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1">vars</a>;</div>
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<div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> <span class="keyword">const</span> std::vector<IntegerValue>& <a class="code hl_variable" href="gscip__solver_8cc.html#aa59e74cc299dbf75fa6e2234dd0849a2">coefficients</a> = objective_definition_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_objective_definition.html#a4053d5aed2a34995e0aeb2042878ca7a">coeffs</a>;</div>
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<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> </div>
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<div class="line"><a id="l00409" name="l00409"></a><span class="lineno"> 409</span> <span class="comment">// We don't assume that objective_var is linked with its linear term, so</span></div>
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<div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> <span class="comment">// we recompute the objective here.</span></div>
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<div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> IntegerValue objective(0);</div>
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<div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < variables.size(); ++i) {</div>
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<div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span> objective +=</div>
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<div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> <a class="code hl_variable" href="gscip__solver_8cc.html#aa59e74cc299dbf75fa6e2234dd0849a2">coefficients</a>[i] * IntegerValue(model_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_model.html#a37eb53a23cb596ef5d2e3bbc0fab70dc">Get</a>(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a96eab70b5ead3894afac4d4fff0fd984">Value</a>(variables[i])));</div>
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<div class="line"><a id="l00415" name="l00415"></a><span class="lineno"> 415</span> }</div>
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<div class="line"><a id="l00416" name="l00416"></a><span class="lineno"> 416</span> <span class="keywordflow">if</span> (objective ></div>
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<div class="line"><a id="l00417" name="l00417"></a><span class="lineno"> 417</span> integer_trail_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#a8b6d5a25e6ad3d28a85b1924471e2cac">UpperBound</a>(objective_definition_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_objective_definition.html#aa3c0b31567c91babfffd5f9afc3161dc">objective_var</a>)) {</div>
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<div class="line"><a id="l00418" name="l00418"></a><span class="lineno"> 418</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00419" name="l00419"></a><span class="lineno"> 419</span> }</div>
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<div class="line"><a id="l00420" name="l00420"></a><span class="lineno"> 420</span> </div>
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<div class="line"><a id="l00421" name="l00421"></a><span class="lineno"> 421</span> <span class="keywordflow">if</span> (feasible_solution_observer_ != <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a id="l00422" name="l00422"></a><span class="lineno"> 422</span> feasible_solution_observer_();</div>
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<div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> }</div>
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<div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> </div>
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<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> <span class="comment">// Constrain objective_var. This has a better result when objective_var is</span></div>
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<div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> <span class="comment">// used in an LP relaxation for instance.</span></div>
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<div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8">Backtrack</a>(0);</div>
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<div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span> sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#a5ca47674a4a0b5e7f40eb430ab474440">SetAssumptionLevel</a>(0);</div>
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<div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span> <span class="keywordflow">if</span> (!integer_trail_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#a05e837bb93eeabbbd94e8f690dd59d32">Enqueue</a>(</div>
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<div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span> <a class="code hl_function" href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">IntegerLiteral::LowerOrEqual</a>(objective_definition_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_objective_definition.html#aa3c0b31567c91babfffd5f9afc3161dc">objective_var</a>,</div>
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<div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span> objective - 1),</div>
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<div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span> {}, {})) {</div>
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<div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span> }</div>
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<div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span> <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
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<div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span>}</div>
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<div class="line"><a id="l00437" name="l00437"></a><span class="lineno"> 437</span> </div>
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<div class="line"><a id="l00438" name="l00438"></a><span class="lineno"> 438</span><span class="keywordtype">void</span> HittingSetOptimizer::AddCoresToTheMpModel(</div>
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<div class="line"><a id="l00439" name="l00439"></a><span class="lineno"> 439</span> <span class="keyword">const</span> std::vector<std::vector<Literal>>& cores) {</div>
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<div class="line"><a id="l00440" name="l00440"></a><span class="lineno"> 440</span> MPModelProto* hs_model = request_.mutable_model();</div>
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<div class="line"><a id="l00441" name="l00441"></a><span class="lineno"> 441</span> </div>
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<div class="line"><a id="l00442" name="l00442"></a><span class="lineno"> 442</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<Literal>& core : cores) {</div>
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<div class="line"><a id="l00443" name="l00443"></a><span class="lineno"> 443</span> <span class="comment">// For cores of size 1, we can just constrain the bound of the variable.</span></div>
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<div class="line"><a id="l00444" name="l00444"></a><span class="lineno"> 444</span> <span class="keywordflow">if</span> (core.size() == 1) {</div>
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<div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> : assumption_to_indices_.at(core.front().Index())) {</div>
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<div class="line"><a id="l00446" name="l00446"></a><span class="lineno"> 446</span> <span class="keyword">const</span> IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = normalized_objective_variables_[<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>];</div>
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<div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span> <span class="keyword">const</span> <span class="keywordtype">double</span> new_bound = <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#ab857cd2aead68952d9fe92a8ad8d3ac9">LowerBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
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<div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span> <span class="keywordflow">if</span> (<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae2544d2a3a5ef4c78f8e5891f104ab41">VariableIsPositive</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div>
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<div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span> hs_model->mutable_variable(<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)->set_lower_bound(new_bound);</div>
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<div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00451" name="l00451"></a><span class="lineno"> 451</span> hs_model->mutable_variable(<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)->set_upper_bound(-new_bound);</div>
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<div class="line"><a id="l00452" name="l00452"></a><span class="lineno"> 452</span> }</div>
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<div class="line"><a id="l00453" name="l00453"></a><span class="lineno"> 453</span> }</div>
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<div class="line"><a id="l00454" name="l00454"></a><span class="lineno"> 454</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span> }</div>
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<div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span> </div>
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<div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</span> <span class="comment">// Add the corresponding constraint to hs_model.</span></div>
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<div class="line"><a id="l00458" name="l00458"></a><span class="lineno"> 458</span> MPConstraintProto* at_least_one = hs_model->add_constraint();</div>
|
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<div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span> at_least_one->set_lower_bound(1.0);</div>
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<div class="line"><a id="l00460" name="l00460"></a><span class="lineno"> 460</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> Literal lit : core) {</div>
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<div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span> <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> : assumption_to_indices_.at(lit.Index())) {</div>
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<div class="line"><a id="l00462" name="l00462"></a><span class="lineno"> 462</span> <span class="keyword">const</span> IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = normalized_objective_variables_[<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>];</div>
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<div class="line"><a id="l00463" name="l00463"></a><span class="lineno"> 463</span> <span class="keyword">const</span> <span class="keywordtype">double</span> sat_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#ab857cd2aead68952d9fe92a8ad8d3ac9">LowerBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div>
|
|
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno"> 464</span> <span class="comment">// normalized_objective_variables_[index] is mapped onto</span></div>
|
|
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno"> 465</span> <span class="comment">// hs_model.variable[index] * sign.</span></div>
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<div class="line"><a id="l00466" name="l00466"></a><span class="lineno"> 466</span> <span class="keyword">const</span> <span class="keywordtype">double</span> sign = <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae2544d2a3a5ef4c78f8e5891f104ab41">VariableIsPositive</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) ? 1.0 : -1.0;</div>
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<div class="line"><a id="l00467" name="l00467"></a><span class="lineno"> 467</span> <span class="comment">// We round hs_value to the nearest integer. This should help in the</span></div>
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<div class="line"><a id="l00468" name="l00468"></a><span class="lineno"> 468</span> <span class="comment">// hash_map part.</span></div>
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<div class="line"><a id="l00469" name="l00469"></a><span class="lineno"> 469</span> <span class="keyword">const</span> <span class="keywordtype">double</span> hs_value =</div>
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<div class="line"><a id="l00470" name="l00470"></a><span class="lineno"> 470</span> std::round(response_.variable_value(<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)) * sign;</div>
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<div class="line"><a id="l00471" name="l00471"></a><span class="lineno"> 471</span> </div>
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<div class="line"><a id="l00472" name="l00472"></a><span class="lineno"> 472</span> <span class="keywordflow">if</span> (hs_value == sat_lb) {</div>
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<div class="line"><a id="l00473" name="l00473"></a><span class="lineno"> 473</span> at_least_one->add_var_index(<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
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<div class="line"><a id="l00474" name="l00474"></a><span class="lineno"> 474</span> at_least_one->add_coefficient(sign);</div>
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<div class="line"><a id="l00475" name="l00475"></a><span class="lineno"> 475</span> at_least_one->set_lower_bound(at_least_one->lower_bound() + hs_value);</div>
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<div class="line"><a id="l00476" name="l00476"></a><span class="lineno"> 476</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00477" name="l00477"></a><span class="lineno"> 477</span> <span class="comment">// The operation type (< or >) is consistent for the same variable,</span></div>
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<div class="line"><a id="l00478" name="l00478"></a><span class="lineno"> 478</span> <span class="comment">// so we do not need this information in the key.</span></div>
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<div class="line"><a id="l00479" name="l00479"></a><span class="lineno"> 479</span> <span class="keyword">const</span> std::pair<int, int64_t> key = {<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>,</div>
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<div class="line"><a id="l00480" name="l00480"></a><span class="lineno"> 480</span> <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(hs_value)};</div>
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<div class="line"><a id="l00481" name="l00481"></a><span class="lineno"> 481</span> <span class="keyword">const</span> <span class="keywordtype">int</span> new_bool_var_index = hs_model->variable_size();</div>
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<div class="line"><a id="l00482" name="l00482"></a><span class="lineno"> 482</span> <span class="keyword">const</span> <span class="keyword">auto</span> [it, inserted] =</div>
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<div class="line"><a id="l00483" name="l00483"></a><span class="lineno"> 483</span> mp_integer_literals_.insert({key, new_bool_var_index});</div>
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<div class="line"><a id="l00484" name="l00484"></a><span class="lineno"> 484</span> </div>
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<div class="line"><a id="l00485" name="l00485"></a><span class="lineno"> 485</span> at_least_one->add_var_index(it->second);</div>
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<div class="line"><a id="l00486" name="l00486"></a><span class="lineno"> 486</span> at_least_one->add_coefficient(1.0);</div>
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<div class="line"><a id="l00487" name="l00487"></a><span class="lineno"> 487</span> </div>
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<div class="line"><a id="l00488" name="l00488"></a><span class="lineno"> 488</span> <span class="keywordflow">if</span> (inserted) {</div>
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<div class="line"><a id="l00489" name="l00489"></a><span class="lineno"> 489</span> <span class="comment">// Creates the implied bound constraint.</span></div>
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<div class="line"><a id="l00490" name="l00490"></a><span class="lineno"> 490</span> MPVariableProto* bool_var = hs_model->add_variable();</div>
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<div class="line"><a id="l00491" name="l00491"></a><span class="lineno"> 491</span> bool_var->set_lower_bound(0);</div>
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<div class="line"><a id="l00492" name="l00492"></a><span class="lineno"> 492</span> bool_var->set_upper_bound(1);</div>
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<div class="line"><a id="l00493" name="l00493"></a><span class="lineno"> 493</span> bool_var->set_is_integer(<span class="keyword">true</span>);</div>
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<div class="line"><a id="l00494" name="l00494"></a><span class="lineno"> 494</span> </div>
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<div class="line"><a id="l00495" name="l00495"></a><span class="lineno"> 495</span> <span class="comment">// (bool_var == 1) => x * sign > hs_value.</span></div>
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<div class="line"><a id="l00496" name="l00496"></a><span class="lineno"> 496</span> <span class="comment">// (x * sign - sat_lb) - (hs_value - sat_lb + 1) * bool_var >= 0.</span></div>
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<div class="line"><a id="l00497" name="l00497"></a><span class="lineno"> 497</span> MPConstraintProto* implied_bound = hs_model->add_constraint();</div>
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<div class="line"><a id="l00498" name="l00498"></a><span class="lineno"> 498</span> implied_bound->set_lower_bound(sat_lb);</div>
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<div class="line"><a id="l00499" name="l00499"></a><span class="lineno"> 499</span> implied_bound->add_var_index(<a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
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<div class="line"><a id="l00500" name="l00500"></a><span class="lineno"> 500</span> implied_bound->add_coefficient(sign);</div>
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<div class="line"><a id="l00501" name="l00501"></a><span class="lineno"> 501</span> implied_bound->add_var_index(new_bool_var_index);</div>
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<div class="line"><a id="l00502" name="l00502"></a><span class="lineno"> 502</span> implied_bound->add_coefficient(sat_lb - hs_value - 1.0);</div>
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<div class="line"><a id="l00503" name="l00503"></a><span class="lineno"> 503</span> }</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> }</div>
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<div class="line"><a id="l00506" name="l00506"></a><span class="lineno"> 506</span> }</div>
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<div class="line"><a id="l00507" name="l00507"></a><span class="lineno"> 507</span> }</div>
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<div class="line"><a id="l00508" name="l00508"></a><span class="lineno"> 508</span>}</div>
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<div class="line"><a id="l00509" name="l00509"></a><span class="lineno"> 509</span> </div>
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<div class="line"><a id="l00510" name="l00510"></a><span class="lineno"> 510</span>std::vector<Literal> HittingSetOptimizer::BuildAssumptions(</div>
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<div class="line"><a id="l00511" name="l00511"></a><span class="lineno"> 511</span> IntegerValue stratified_threshold,</div>
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<div class="line"><a id="l00512" name="l00512"></a><span class="lineno"> 512</span> IntegerValue* next_stratified_threshold) {</div>
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<div class="line"><a id="l00513" name="l00513"></a><span class="lineno"> 513</span> std::vector<Literal> assumptions;</div>
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<div class="line"><a id="l00514" name="l00514"></a><span class="lineno"> 514</span> <span class="comment">// This code assumes that the variables from the objective are extracted</span></div>
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<div class="line"><a id="l00515" name="l00515"></a><span class="lineno"> 515</span> <span class="comment">// first, and in the order of the objective definition.</span></div>
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<div class="line"><a id="l00516" name="l00516"></a><span class="lineno"> 516</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < normalized_objective_variables_.size(); ++i) {</div>
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<div class="line"><a id="l00517" name="l00517"></a><span class="lineno"> 517</span> <span class="keyword">const</span> IntegerVariable <a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = normalized_objective_variables_[i];</div>
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<div class="line"><a id="l00518" name="l00518"></a><span class="lineno"> 518</span> <span class="keyword">const</span> IntegerValue <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> = normalized_objective_coefficients_[i];</div>
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<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> <span class="comment">// Correct the sign of the value queried from the MP solution.</span></div>
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<div class="line"><a id="l00521" name="l00521"></a><span class="lineno"> 521</span> <span class="comment">// Note that normalized_objective_variables_[i] is mapped onto</span></div>
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<div class="line"><a id="l00522" name="l00522"></a><span class="lineno"> 522</span> <span class="comment">// hs_model.variable[i] * sign.</span></div>
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<div class="line"><a id="l00523" name="l00523"></a><span class="lineno"> 523</span> <span class="keyword">const</span> IntegerValue hs_value(</div>
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<div class="line"><a id="l00524" name="l00524"></a><span class="lineno"> 524</span> <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(std::round(response_.variable_value(i))) *</div>
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<div class="line"><a id="l00525" name="l00525"></a><span class="lineno"> 525</span> (<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#ae2544d2a3a5ef4c78f8e5891f104ab41">VariableIsPositive</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) ? 1 : -1));</div>
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<div class="line"><a id="l00526" name="l00526"></a><span class="lineno"> 526</span> </div>
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<div class="line"><a id="l00527" name="l00527"></a><span class="lineno"> 527</span> <span class="comment">// Non binding, ignoring.</span></div>
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<div class="line"><a id="l00528" name="l00528"></a><span class="lineno"> 528</span> <span class="keywordflow">if</span> (hs_value == integer_trail_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#a8b6d5a25e6ad3d28a85b1924471e2cac">UpperBound</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00529" name="l00529"></a><span class="lineno"> 529</span> </div>
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<div class="line"><a id="l00530" name="l00530"></a><span class="lineno"> 530</span> <span class="comment">// Only consider the terms above the threshold.</span></div>
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<div class="line"><a id="l00531" name="l00531"></a><span class="lineno"> 531</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a> < stratified_threshold) {</div>
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<div class="line"><a id="l00532" name="l00532"></a><span class="lineno"> 532</span> *next_stratified_threshold = <a class="code hl_variable" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(*next_stratified_threshold, <a class="code hl_variable" href="variable__and__expressions_8cc.html#a2091cd7d80fdd31762020bce86138587">coeff</a>);</div>
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<div class="line"><a id="l00533" name="l00533"></a><span class="lineno"> 533</span> } <span class="keywordflow">else</span> {</div>
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<div class="line"><a id="l00534" name="l00534"></a><span class="lineno"> 534</span> <span class="comment">// It is possible that different variables have the same associated</span></div>
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<div class="line"><a id="l00535" name="l00535"></a><span class="lineno"> 535</span> <span class="comment">// literal. So we do need to consider this case.</span></div>
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<div class="line"><a id="l00536" name="l00536"></a><span class="lineno"> 536</span> assumptions.push_back(integer_encoder_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_encoder.html#afcd4038298bec97a2f7a61274c6ef8c7">GetOrCreateAssociatedLiteral</a>(</div>
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<div class="line"><a id="l00537" name="l00537"></a><span class="lineno"> 537</span> <a class="code hl_function" href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">IntegerLiteral::LowerOrEqual</a>(<a class="code hl_variable" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, hs_value)));</div>
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<div class="line"><a id="l00538" name="l00538"></a><span class="lineno"> 538</span> assumption_to_indices_[assumptions.back().Index()].push_back(i);</div>
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<div class="line"><a id="l00539" name="l00539"></a><span class="lineno"> 539</span> }</div>
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<div class="line"><a id="l00540" name="l00540"></a><span class="lineno"> 540</span> }</div>
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<div class="line"><a id="l00541" name="l00541"></a><span class="lineno"> 541</span> <span class="keywordflow">return</span> assumptions;</div>
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<div class="line"><a id="l00542" name="l00542"></a><span class="lineno"> 542</span>}</div>
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<div class="line"><a id="l00543" name="l00543"></a><span class="lineno"> 543</span> </div>
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<div class="line"><a id="l00544" name="l00544"></a><span class="lineno"> 544</span><span class="comment">// This is the "generalized" hitting set problem we will solve. Each time</span></div>
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<div class="line"><a id="l00545" name="l00545"></a><span class="lineno"> 545</span><span class="comment">// we find a core, a new constraint will be added to this problem.</span></div>
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<div class="line"><a id="l00546" name="l00546"></a><span class="lineno"> 546</span><span class="comment">//</span></div>
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<div class="line"><a id="l00547" name="l00547"></a><span class="lineno"> 547</span><span class="comment">// TODO(user): remove code duplication with MinimizeWithCoreAndLazyEncoding();</span></div>
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<div class="line"><a id="l00548" name="l00548"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_hitting_set_optimizer.html#a4398d89730acb3b628a3c81d55bac96f"> 548</a></span><a class="code hl_enumeration" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b">SatSolver::Status</a> <a class="code hl_function" href="classoperations__research_1_1sat_1_1_hitting_set_optimizer.html#a4398d89730acb3b628a3c81d55bac96f">HittingSetOptimizer::Optimize</a>() {</div>
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<div class="line"><a id="l00549" name="l00549"></a><span class="lineno"> 549</span><span class="preprocessor">#if !defined(__PORTABLE_PLATFORM__) && defined(USE_SCIP)</span></div>
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<div class="line"><a id="l00550" name="l00550"></a><span class="lineno"> 550</span> <span class="keywordflow">if</span> (!ComputeInitialMpModel()) <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483">SatSolver::INFEASIBLE</a>;</div>
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<div class="line"><a id="l00551" name="l00551"></a><span class="lineno"> 551</span> </div>
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<div class="line"><a id="l00552" name="l00552"></a><span class="lineno"> 552</span> <span class="comment">// This is used by the "stratified" approach. We will only consider terms with</span></div>
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<div class="line"><a id="l00553" name="l00553"></a><span class="lineno"> 553</span> <span class="comment">// a weight not lower than this threshold. The threshold will decrease as the</span></div>
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<div class="line"><a id="l00554" name="l00554"></a><span class="lineno"> 554</span> <span class="comment">// algorithm progress.</span></div>
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<div class="line"><a id="l00555" name="l00555"></a><span class="lineno"> 555</span> IntegerValue stratified_threshold = <a class="code hl_function" href="namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8">kMaxIntegerValue</a>;</div>
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<div class="line"><a id="l00556" name="l00556"></a><span class="lineno"> 556</span> </div>
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<div class="line"><a id="l00557" name="l00557"></a><span class="lineno"> 557</span> <span class="comment">// Start the algorithm.</span></div>
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<div class="line"><a id="l00558" name="l00558"></a><span class="lineno"> 558</span> <a class="code hl_enumeration" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b">SatSolver::Status</a> result;</div>
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<div class="line"><a id="l00559" name="l00559"></a><span class="lineno"> 559</span> <span class="keywordflow">for</span> (<span class="keywordtype">int</span> iter = 0;; ++iter) {</div>
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<div class="line"><a id="l00560" name="l00560"></a><span class="lineno"> 560</span> <span class="comment">// TODO(user): Even though we keep the same solver, currently the solve is</span></div>
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<div class="line"><a id="l00561" name="l00561"></a><span class="lineno"> 561</span> <span class="comment">// not really done incrementally. It might be hard to improve though.</span></div>
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<div class="line"><a id="l00562" name="l00562"></a><span class="lineno"> 562</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00563" name="l00563"></a><span class="lineno"> 563</span> <span class="comment">// TODO(user): deal with time limit.</span></div>
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<div class="line"><a id="l00564" name="l00564"></a><span class="lineno"> 564</span> </div>
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<div class="line"><a id="l00565" name="l00565"></a><span class="lineno"> 565</span> <span class="comment">// Get the best external bound and constraint the objective of the MPModel.</span></div>
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<div class="line"><a id="l00566" name="l00566"></a><span class="lineno"> 566</span> <span class="keywordflow">if</span> (shared_response_ != <span class="keyword">nullptr</span>) {</div>
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<div class="line"><a id="l00567" name="l00567"></a><span class="lineno"> 567</span> <span class="keyword">const</span> IntegerValue best_lower_bound =</div>
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<div class="line"><a id="l00568" name="l00568"></a><span class="lineno"> 568</span> shared_response_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_shared_response_manager.html#ae431b0e8c0f74f95c31ba38f3c534126">GetInnerObjectiveLowerBound</a>();</div>
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<div class="line"><a id="l00569" name="l00569"></a><span class="lineno"> 569</span> obj_constraint_->set_lower_bound(<a class="code hl_function" href="namespaceoperations__research_1_1sat.html#aed77a1a7675c2f8568529a5a16247ec1">ToDouble</a>(best_lower_bound));</div>
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<div class="line"><a id="l00570" name="l00570"></a><span class="lineno"> 570</span> }</div>
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<div class="line"><a id="l00571" name="l00571"></a><span class="lineno"> 571</span> </div>
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<div class="line"><a id="l00572" name="l00572"></a><span class="lineno"> 572</span> <span class="keywordflow">if</span> (!ImportFromOtherWorkers()) <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483">SatSolver::INFEASIBLE</a>;</div>
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<div class="line"><a id="l00573" name="l00573"></a><span class="lineno"> 573</span> TightenMpModel();</div>
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<div class="line"><a id="l00574" name="l00574"></a><span class="lineno"> 574</span> </div>
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<div class="line"><a id="l00575" name="l00575"></a><span class="lineno"> 575</span> <span class="comment">// TODO(user): C^c is broken when using SCIP.</span></div>
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<div class="line"><a id="l00576" name="l00576"></a><span class="lineno"> 576</span> <a class="code hl_function" href="classoperations__research_1_1_m_p_solver.html#aad8e8f47697c2149ae4ee449bcc3142c">MPSolver::SolveWithProto</a>(request_, &response_);</div>
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<div class="line"><a id="l00577" name="l00577"></a><span class="lineno"> 577</span> <span class="keywordflow">if</span> (response_.status() != MPSolverResponseStatus::MPSOLVER_OPTIMAL) {</div>
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<div class="line"><a id="l00578" name="l00578"></a><span class="lineno"> 578</span> <span class="comment">// We currently abort if we have a non-optimal result.</span></div>
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<div class="line"><a id="l00579" name="l00579"></a><span class="lineno"> 579</span> <span class="comment">// This is correct if we had a limit reached, but not in the other</span></div>
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<div class="line"><a id="l00580" name="l00580"></a><span class="lineno"> 580</span> <span class="comment">// cases.</span></div>
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<div class="line"><a id="l00581" name="l00581"></a><span class="lineno"> 581</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00582" name="l00582"></a><span class="lineno"> 582</span> <span class="comment">// TODO(user): It is actually easy to use a FEASIBLE result. If when</span></div>
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<div class="line"><a id="l00583" name="l00583"></a><span class="lineno"> 583</span> <span class="comment">// passing it to SAT it is no feasbile, we can still create cores. If it</span></div>
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<div class="line"><a id="l00584" name="l00584"></a><span class="lineno"> 584</span> <span class="comment">// is feasible, we have a solution, but we cannot increase the lower</span></div>
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<div class="line"><a id="l00585" name="l00585"></a><span class="lineno"> 585</span> <span class="comment">// bound.</span></div>
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<div class="line"><a id="l00586" name="l00586"></a><span class="lineno"> 586</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed">SatSolver::LIMIT_REACHED</a>;</div>
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<div class="line"><a id="l00587" name="l00587"></a><span class="lineno"> 587</span> }</div>
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<div class="line"><a id="l00588" name="l00588"></a><span class="lineno"> 588</span> <span class="keywordflow">if</span> (response_.status() != MPSolverResponseStatus::MPSOLVER_OPTIMAL) {</div>
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<div class="line"><a id="l00589" name="l00589"></a><span class="lineno"> 589</span> <span class="keywordflow">continue</span>;</div>
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<div class="line"><a id="l00590" name="l00590"></a><span class="lineno"> 590</span> }</div>
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<div class="line"><a id="l00591" name="l00591"></a><span class="lineno"> 591</span> </div>
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<div class="line"><a id="l00592" name="l00592"></a><span class="lineno"> 592</span> <span class="keyword">const</span> IntegerValue mip_objective(</div>
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<div class="line"><a id="l00593" name="l00593"></a><span class="lineno"> 593</span> <span class="keyword">static_cast<</span>int64_t<span class="keyword">></span>(std::round(response_.objective_value())));</div>
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<div class="line"><a id="l00594" name="l00594"></a><span class="lineno"> 594</span> <a class="code hl_define" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"--"</span> << iter</div>
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<div class="line"><a id="l00595" name="l00595"></a><span class="lineno"> 595</span> << <span class="stringliteral">"-- constraints:"</span> << request_.mutable_model()->constraint_size()</div>
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<div class="line"><a id="l00596" name="l00596"></a><span class="lineno"> 596</span> << <span class="stringliteral">" variables:"</span> << request_.mutable_model()->variable_size()</div>
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<div class="line"><a id="l00597" name="l00597"></a><span class="lineno"> 597</span> << <span class="stringliteral">" hs_lower_bound:"</span></div>
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<div class="line"><a id="l00598" name="l00598"></a><span class="lineno"> 598</span> << objective_definition_.<a class="code hl_function" href="structoperations__research_1_1sat_1_1_objective_definition.html#adb0775f26a8a26bbd760d700d66c5281">ScaleIntegerObjective</a>(mip_objective)</div>
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<div class="line"><a id="l00599" name="l00599"></a><span class="lineno"> 599</span> << <span class="stringliteral">" strat:"</span> << stratified_threshold;</div>
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<div class="line"><a id="l00600" name="l00600"></a><span class="lineno"> 600</span> </div>
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<div class="line"><a id="l00601" name="l00601"></a><span class="lineno"> 601</span> <span class="comment">// Update the objective lower bound with our current bound.</span></div>
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<div class="line"><a id="l00602" name="l00602"></a><span class="lineno"> 602</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00603" name="l00603"></a><span class="lineno"> 603</span> <span class="comment">// Note(user): This is not needed for correctness, but it might cause</span></div>
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<div class="line"><a id="l00604" name="l00604"></a><span class="lineno"> 604</span> <span class="comment">// more propagation and is nice to have for reporting/logging purpose.</span></div>
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<div class="line"><a id="l00605" name="l00605"></a><span class="lineno"> 605</span> <span class="keywordflow">if</span> (!integer_trail_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_integer_trail.html#a05e837bb93eeabbbd94e8f690dd59d32">Enqueue</a>(</div>
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<div class="line"><a id="l00606" name="l00606"></a><span class="lineno"> 606</span> <a class="code hl_function" href="structoperations__research_1_1sat_1_1_integer_literal.html#a6c233aafac25ea66d69de93a83c9be63">IntegerLiteral::GreaterOrEqual</a>(objective_definition_.<a class="code hl_variable" href="structoperations__research_1_1sat_1_1_objective_definition.html#aa3c0b31567c91babfffd5f9afc3161dc">objective_var</a>,</div>
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|
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno"> 607</span> mip_objective),</div>
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<div class="line"><a id="l00608" name="l00608"></a><span class="lineno"> 608</span> {}, {})) {</div>
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<div class="line"><a id="l00609" name="l00609"></a><span class="lineno"> 609</span> result = <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483">SatSolver::INFEASIBLE</a>;</div>
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|
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno"> 610</span> <span class="keywordflow">break</span>;</div>
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|
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno"> 611</span> }</div>
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|
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno"> 612</span> </div>
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<div class="line"><a id="l00613" name="l00613"></a><span class="lineno"> 613</span> sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8">Backtrack</a>(0);</div>
|
|
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno"> 614</span> sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#a5ca47674a4a0b5e7f40eb430ab474440">SetAssumptionLevel</a>(0);</div>
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|
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno"> 615</span> assumption_to_indices_.clear();</div>
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|
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno"> 616</span> IntegerValue next_stratified_threshold(0);</div>
|
|
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno"> 617</span> <span class="keyword">const</span> std::vector<Literal> assumptions =</div>
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|
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno"> 618</span> BuildAssumptions(stratified_threshold, &next_stratified_threshold);</div>
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|
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno"> 619</span> </div>
|
|
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno"> 620</span> <span class="comment">// No assumptions with the current stratified_threshold? use the new one.</span></div>
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|
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno"> 621</span> <span class="keywordflow">if</span> (assumptions.empty() && next_stratified_threshold > 0) {</div>
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|
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno"> 622</span> <a class="code hl_define" href="base_2logging_8h.html#a4bd2e815ca2f702a4b6aa744b1ff3b82">CHECK_LT</a>(next_stratified_threshold, stratified_threshold);</div>
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|
<div class="line"><a id="l00623" name="l00623"></a><span class="lineno"> 623</span> stratified_threshold = next_stratified_threshold;</div>
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|
<div class="line"><a id="l00624" name="l00624"></a><span class="lineno"> 624</span> --iter; <span class="comment">// "false" iteration, the lower bound does not increase.</span></div>
|
|
<div class="line"><a id="l00625" name="l00625"></a><span class="lineno"> 625</span> <span class="keywordflow">continue</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="comment">// TODO(user): Use the real weights and exploit the extra cores.</span></div>
|
|
<div class="line"><a id="l00629" name="l00629"></a><span class="lineno"> 629</span> <span class="comment">// TODO(user): If we extract more than the objective variables, we could</span></div>
|
|
<div class="line"><a id="l00630" name="l00630"></a><span class="lineno"> 630</span> <span class="comment">// use the solution values from the MPModel as hints to the SAT model.</span></div>
|
|
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno"> 631</span> result = FindMultipleCoresForMaxHs(assumptions, &temp_cores_);</div>
|
|
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno"> 632</span> <span class="keywordflow">if</span> (result == <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1">SatSolver::FEASIBLE</a>) {</div>
|
|
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno"> 633</span> <span class="keywordflow">if</span> (!ProcessSolution()) <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483">SatSolver::INFEASIBLE</a>;</div>
|
|
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno"> 634</span> <span class="keywordflow">if</span> (parameters_.stop_after_first_solution()) {</div>
|
|
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno"> 635</span> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed">SatSolver::LIMIT_REACHED</a>;</div>
|
|
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno"> 636</span> }</div>
|
|
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno"> 637</span> <span class="keywordflow">if</span> (temp_cores_.empty()) {</div>
|
|
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno"> 638</span> <span class="comment">// If not all assumptions were taken, continue with a lower stratified</span></div>
|
|
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno"> 639</span> <span class="comment">// bound. Otherwise we have an optimal solution.</span></div>
|
|
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno"> 640</span> stratified_threshold = next_stratified_threshold;</div>
|
|
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno"> 641</span> <span class="keywordflow">if</span> (stratified_threshold == 0) <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno"> 642</span> --iter; <span class="comment">// "false" iteration, the lower bound does not increase.</span></div>
|
|
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno"> 643</span> <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno"> 644</span> }</div>
|
|
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno"> 645</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (result == <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed">SatSolver::LIMIT_REACHED</a>) {</div>
|
|
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno"> 646</span> <span class="comment">// Hack: we use a local limit internally that we restore at the end.</span></div>
|
|
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno"> 647</span> <span class="comment">// However we still return LIMIT_REACHED in this case...</span></div>
|
|
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno"> 648</span> <span class="keywordflow">if</span> (time_limit_-><a class="code hl_function" href="classoperations__research_1_1_time_limit.html#a810d5f7aaf80cc09cf5a094e20c1aaca">LimitReached</a>()) <span class="keywordflow">break</span>;</div>
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|
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno"> 649</span> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (result != <a class="code hl_enumvalue" href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885">SatSolver::ASSUMPTIONS_UNSAT</a>) {</div>
|
|
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno"> 650</span> <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno"> 651</span> }</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> sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8">Backtrack</a>(0);</div>
|
|
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno"> 654</span> sat_solver_-><a class="code hl_function" href="classoperations__research_1_1sat_1_1_sat_solver.html#a5ca47674a4a0b5e7f40eb430ab474440">SetAssumptionLevel</a>(0);</div>
|
|
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno"> 655</span> AddCoresToTheMpModel(temp_cores_);</div>
|
|
<div class="line"><a id="l00656" name="l00656"></a><span class="lineno"> 656</span> }</div>
|
|
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno"> 657</span> </div>
|
|
<div class="line"><a id="l00658" name="l00658"></a><span class="lineno"> 658</span> <span class="keywordflow">return</span> result;</div>
|
|
<div class="line"><a id="l00659" name="l00659"></a><span class="lineno"> 659</span><span class="preprocessor">#else </span><span class="comment">// !__PORTABLE_PLATFORM__ && USE_SCIP</span></div>
|
|
<div class="line"><a id="l00660" name="l00660"></a><span class="lineno"> 660</span> <a class="code hl_define" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code hl_variable" href="log__severity_8h.html#acdd38e3c9f22f127d7776920e3079eda">FATAL</a>) << <span class="stringliteral">"Not supported."</span>;</div>
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|
<div class="line"><a id="l00661" name="l00661"></a><span class="lineno"> 661</span><span class="preprocessor">#endif </span><span class="comment">// !__PORTABLE_PLATFORM__ && USE_SCIP</span></div>
|
|
<div class="line"><a id="l00662" name="l00662"></a><span class="lineno"> 662</span>}</div>
|
|
<div class="line"><a id="l00663" name="l00663"></a><span class="lineno"> 663</span> </div>
|
|
<div class="line"><a id="l00664" name="l00664"></a><span class="lineno"> 664</span>} <span class="comment">// namespace sat</span></div>
|
|
<div class="line"><a id="l00665" name="l00665"></a><span class="lineno"> 665</span>} <span class="comment">// namespace operations_research</span></div>
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|
<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>
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<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>
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<div class="ttc" id="abase_2logging_8h_html"><div class="ttname"><a href="base_2logging_8h.html">logging.h</a></div></div>
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<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>
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<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>
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<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>
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<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>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_a4e3670a285a3642eaa07f66766cffa72"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#a4e3670a285a3642eaa07f66766cffa72">absl::StrongVector::resize</a></div><div class="ttdeci">void resize(size_type new_size)</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00150">strong_vector.h:150</a></div></div>
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<div class="ttc" id="aclassabsl_1_1_strong_vector_html_a60304b65bf89363bcc3165d3cde67f86"><div class="ttname"><a href="classabsl_1_1_strong_vector.html#a60304b65bf89363bcc3165d3cde67f86">absl::StrongVector::size</a></div><div class="ttdeci">size_type size() const</div><div class="ttdef"><b>Definition:</b> <a href="strong__vector_8h_source.html#l00147">strong_vector.h:147</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_m_p_solver_html_aad8e8f47697c2149ae4ee449bcc3142c"><div class="ttname"><a href="classoperations__research_1_1_m_p_solver.html#aad8e8f47697c2149ae4ee449bcc3142c">operations_research::MPSolver::SolveWithProto</a></div><div class="ttdeci">static void SolveWithProto(const MPModelRequest &model_request, MPSolutionResponse *response, std::atomic< bool > *interrupt=nullptr)</div><div class="ttdoc">Solves the model encoded by a MPModelRequest protocol buffer and fills the solution encoded as a MPSo...</div><div class="ttdef"><b>Definition:</b> <a href="linear__solver_8cc_source.html#l00865">linear_solver.cc:865</a></div></div>
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<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>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_a75214ecbf18d3e29566c78cac35f699b"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#a75214ecbf18d3e29566c78cac35f699b">operations_research::TimeLimit::GetDeterministicLimit</a></div><div class="ttdeci">double GetDeterministicLimit() const</div><div class="ttdoc">Queries the deterministic time limit.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00304">time_limit.h:304</a></div></div>
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<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>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_ac7e861414a70fc937d18bc7ca743fc98"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#ac7e861414a70fc937d18bc7ca743fc98">operations_research::TimeLimit::GetElapsedDeterministicTime</a></div><div class="ttdeci">double GetElapsedDeterministicTime() const</div><div class="ttdoc">Returns the elapsed deterministic time since the construction of this object.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00261">time_limit.h:261</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_time_limit_html_af6b375b546e563ed7e6312123ce9c7a0"><div class="ttname"><a href="classoperations__research_1_1_time_limit.html#af6b375b546e563ed7e6312123ce9c7a0">operations_research::TimeLimit::ChangeDeterministicLimit</a></div><div class="ttdeci">void ChangeDeterministicLimit(double new_limit)</div><div class="ttdoc">Overwrites the deterministic time limit with the new value.</div><div class="ttdef"><b>Definition:</b> <a href="time__limit_8h_source.html#l00297">time_limit.h:297</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_hitting_set_optimizer_html_a4398d89730acb3b628a3c81d55bac96f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_hitting_set_optimizer.html#a4398d89730acb3b628a3c81d55bac96f">operations_research::sat::HittingSetOptimizer::Optimize</a></div><div class="ttdeci">SatSolver::Status Optimize()</div><div class="ttdef"><b>Definition:</b> <a href="max__hs_8cc_source.html#l00548">max_hs.cc:548</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_hitting_set_optimizer_html_a56e7c889c98a749d3fcbc3de39e9956d"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_hitting_set_optimizer.html#a56e7c889c98a749d3fcbc3de39e9956d">operations_research::sat::HittingSetOptimizer::HittingSetOptimizer</a></div><div class="ttdeci">HittingSetOptimizer(const CpModelProto &model_proto, const ObjectiveDefinition &objective_definition, const std::function< void()> &feasible_solution_observer, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="max__hs_8cc_source.html#l00063">max_hs.cc:63</a></div></div>
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<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>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_encoder_html_a308a6df2722f2c0f36ec8888f4458b41"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_encoder.html#a308a6df2722f2c0f36ec8888f4458b41">operations_research::sat::IntegerEncoder::GetLiteralView</a></div><div class="ttdeci">const IntegerVariable GetLiteralView(Literal lit) const</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00499">integer.h:499</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_encoder_html_afcd4038298bec97a2f7a61274c6ef8c7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_encoder.html#afcd4038298bec97a2f7a61274c6ef8c7">operations_research::sat::IntegerEncoder::GetOrCreateAssociatedLiteral</a></div><div class="ttdeci">Literal GetOrCreateAssociatedLiteral(IntegerLiteral i_lit)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l00238">integer.cc:238</a></div></div>
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<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>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html_a05e837bb93eeabbbd94e8f690dd59d32"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html#a05e837bb93eeabbbd94e8f690dd59d32">operations_research::sat::IntegerTrail::Enqueue</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool Enqueue(IntegerLiteral i_lit, absl::Span< const Literal > literal_reason, absl::Span< const IntegerLiteral > integer_reason)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l01048">integer.cc:1048</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html_a8b6d5a25e6ad3d28a85b1924471e2cac"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html#a8b6d5a25e6ad3d28a85b1924471e2cac">operations_research::sat::IntegerTrail::UpperBound</a></div><div class="ttdeci">IntegerValue UpperBound(IntegerVariable i) const</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01449">integer.h:1449</a></div></div>
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<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>
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<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>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html_ab857cd2aead68952d9fe92a8ad8d3ac9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html#ab857cd2aead68952d9fe92a8ad8d3ac9">operations_research::sat::IntegerTrail::LowerBound</a></div><div class="ttdeci">IntegerValue LowerBound(IntegerVariable i) const</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01445">integer.h:1445</a></div></div>
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<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>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_model_html_a37eb53a23cb596ef5d2e3bbc0fab70dc"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_model.html#a37eb53a23cb596ef5d2e3bbc0fab70dc">operations_research::sat::Model::Get</a></div><div class="ttdeci">T Get(std::function< T(const Model &)> f) const</div><div class="ttdoc">Similar to Add() but this is const.</div><div class="ttdef"><b>Definition:</b> <a href="sat_2model_8h_source.html#l00091">sat/model.h:91</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_model_html_afb0c03e2a6201677c266f8a7eb77c2dc"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_model.html#afb0c03e2a6201677c266f8a7eb77c2dc">operations_research::sat::Model::GetOrCreate</a></div><div class="ttdeci">T * GetOrCreate()</div><div class="ttdoc">Returns an object of type T that is unique to this model (like a "local" singleton).</div><div class="ttdef"><b>Definition:</b> <a href="sat_2model_8h_source.html#l00110">sat/model.h:110</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_model_random_generator_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_model_random_generator.html">operations_research::sat::ModelRandomGenerator</a></div><div class="ttdef"><b>Definition:</b> <a href="sat_2util_8h_source.html#l00115">sat/util.h:115</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html">operations_research::sat::SatSolver</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00061">sat_solver.h:61</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a1a5e26554d014197de9434d2c39e07e9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a1a5e26554d014197de9434d2c39e07e9">operations_research::sat::SatSolver::parameters</a></div><div class="ttdeci">const SatParameters & parameters() const</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8cc_source.html#l00131">sat_solver.cc:131</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a4f7251fc4692363cf55796a6f3e267ea"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a4f7251fc4692363cf55796a6f3e267ea">operations_research::sat::SatSolver::NotifyThatModelIsUnsat</a></div><div class="ttdeci">void NotifyThatModelIsUnsat()</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00417">sat_solver.h:417</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a5ca47674a4a0b5e7f40eb430ab474440"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a5ca47674a4a0b5e7f40eb430ab474440">operations_research::sat::SatSolver::SetAssumptionLevel</a></div><div class="ttdeci">void SetAssumptionLevel(int assumption_level)</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8cc_source.html#l01060">sat_solver.cc:1060</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70b">operations_research::sat::SatSolver::Status</a></div><div class="ttdeci">Status</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00183">sat_solver.h:183</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba03f919221217f95d21a593a7120165e1">operations_research::sat::SatSolver::FEASIBLE</a></div><div class="ttdeci">@ FEASIBLE</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00186">sat_solver.h:186</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba2884fa43446c0cbc9c7a9b74d41d7483">operations_research::sat::SatSolver::INFEASIBLE</a></div><div class="ttdeci">@ INFEASIBLE</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00185">sat_solver.h:185</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70ba72c2402449caa8f3edc8aa0a3816baed">operations_research::sat::SatSolver::LIMIT_REACHED</a></div><div class="ttdeci">@ LIMIT_REACHED</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00187">sat_solver.h:187</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#a67a0db04d321a74b7e7fcfd3f1a3f70bae5ba802809eb747ea486ca3fae32a885">operations_research::sat::SatSolver::ASSUMPTIONS_UNSAT</a></div><div class="ttdeci">@ ASSUMPTIONS_UNSAT</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8h_source.html#l00184">sat_solver.h:184</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_ac035378cea0ed7b0978105547402faa8"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#ac035378cea0ed7b0978105547402faa8">operations_research::sat::SatSolver::Backtrack</a></div><div class="ttdeci">void Backtrack(int target_level)</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8cc_source.html#l00991">sat_solver.cc:991</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_sat_solver_html_acfbfa9df611cb625ff79785c05784580"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_sat_solver.html#acfbfa9df611cb625ff79785c05784580">operations_research::sat::SatSolver::GetLastIncompatibleDecisions</a></div><div class="ttdeci">std::vector< Literal > GetLastIncompatibleDecisions()</div><div class="ttdef"><b>Definition:</b> <a href="sat__solver_8cc_source.html#l01375">sat_solver.cc:1375</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_response_manager_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_response_manager.html">operations_research::sat::SharedResponseManager</a></div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8h_source.html#l00181">synchronization.h:181</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_shared_response_manager_html_ae431b0e8c0f74f95c31ba38f3c534126"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_shared_response_manager.html#ae431b0e8c0f74f95c31ba38f3c534126">operations_research::sat::SharedResponseManager::GetInnerObjectiveLowerBound</a></div><div class="ttdeci">IntegerValue GetInnerObjectiveLowerBound()</div><div class="ttdef"><b>Definition:</b> <a href="synchronization_8cc_source.html#l00365">synchronization.cc:365</a></div></div>
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<div class="ttc" id="acleanup_8h_html"><div class="ttname"><a href="cleanup_8h.html">cleanup.h</a></div></div>
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<div class="ttc" id="acp__model__mapping_8h_html"><div class="ttname"><a href="cp__model__mapping_8h.html">cp_model_mapping.h</a></div></div>
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<div class="ttc" id="acp__model__solver_8cc_html_a6ac76d8a372013f67c4973012948ec84"><div class="ttname"><a href="cp__model__solver_8cc.html#a6ac76d8a372013f67c4973012948ec84">model_proto</a></div><div class="ttdeci">CpModelProto const * model_proto</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__solver_8cc_source.html#l02048">cp_model_solver.cc:2048</a></div></div>
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<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>
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<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>
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<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>
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<div class="ttc" id="agscip__solver_8cc_html_aa59e74cc299dbf75fa6e2234dd0849a2"><div class="ttname"><a href="gscip__solver_8cc.html#aa59e74cc299dbf75fa6e2234dd0849a2">coefficients</a></div><div class="ttdeci">absl::Span< const double > coefficients</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00140">gscip_solver.cc:140</a></div></div>
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<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>
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<div class="ttc" id="ainteger_8h_html"><div class="ttname"><a href="integer_8h.html">integer.h</a></div></div>
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<div class="ttc" id="ainteger__search_8h_html"><div class="ttname"><a href="integer__search_8h.html">integer_search.h</a></div></div>
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<div class="ttc" id="alinear__relaxation_8h_html"><div class="ttname"><a href="linear__relaxation_8h.html">linear_relaxation.h</a></div></div>
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<div class="ttc" id="alinear__solver_8h_html"><div class="ttname"><a href="linear__solver_8h.html">linear_solver.h</a></div><div class="ttdoc">A C++ wrapper that provides a simple and unified interface to several linear programming and mixed in...</div></div>
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<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>
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<div class="ttc" id="alog__severity_8h_html_acdd38e3c9f22f127d7776920e3079eda"><div class="ttname"><a href="log__severity_8h.html#acdd38e3c9f22f127d7776920e3079eda">FATAL</a></div><div class="ttdeci">const int FATAL</div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00032">log_severity.h:32</a></div></div>
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<div class="ttc" id="amax__hs_8cc_html_a1bcd4379e7db62efdf5ffc541a76255f"><div class="ttname"><a href="max__hs_8cc.html#a1bcd4379e7db62efdf5ffc541a76255f">ABSL_FLAG</a></div><div class="ttdeci">ABSL_FLAG(int, max_hs_strategy, 0, "MaxHsStrategy: 0 extract only objective variable, 1 extract all variables " "colocated with objective variables, 2 extract all variables in the " "linearization")</div></div>
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<div class="ttc" id="amax__hs_8h_html"><div class="ttname"><a href="max__hs_8h.html">max_hs.h</a></div></div>
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<div class="ttc" id="anamespaceabsl_html_a01547ab811df98c71089487f394ec259"><div class="ttname"><a href="namespaceabsl.html#a01547ab811df98c71089487f394ec259">absl::MakeCleanup</a></div><div class="ttdeci">absl::Cleanup< absl::decay_t< Callback > > MakeCleanup(Callback &&callback)</div><div class="ttdef"><b>Definition:</b> <a href="cleanup_8h_source.html#l00125">cleanup.h:125</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_a5de89a1f6e3f80a49a0d76136d8044e2"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2">operations_research::math_opt::swap</a></div><div class="ttdeci">void swap(IdMap< K, V > &a, IdMap< K, V > &b)</div><div class="ttdef"><b>Definition:</b> <a href="id__map_8h_source.html#l00262">id_map.h:262</a></div></div>
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<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>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a17b20b0845d9e02829d417294aded36a"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a17b20b0845d9e02829d417294aded36a">operations_research::sat::ResetAndSolveIntegerProblem</a></div><div class="ttdeci">SatSolver::Status ResetAndSolveIntegerProblem(const std::vector< Literal > &assumptions, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8cc_source.html#l01062">integer_search.cc:1062</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a1ccfd912c87b8ca68a7fe0d62d7f49bc"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a1ccfd912c87b8ca68a7fe0d62d7f49bc">operations_research::sat::TryToLinearizeConstraint</a></div><div class="ttdeci">void TryToLinearizeConstraint(const CpModelProto &model_proto, const ConstraintProto &ct, int linearization_level, Model *model, LinearRelaxation *relaxation)</div><div class="ttdef"><b>Definition:</b> <a href="linear__relaxation_8cc_source.html#l01025">linear_relaxation.cc:1025</a></div></div>
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<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>
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<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>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a96eab70b5ead3894afac4d4fff0fd984"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a96eab70b5ead3894afac4d4fff0fd984">operations_research::sat::Value</a></div><div class="ttdeci">std::function< int64_t(const Model &)> Value(IntegerVariable v)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01683">integer.h:1683</a></div></div>
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<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>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ab76a35e6ff810ad9ea8b58c7c11606cb"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ab76a35e6ff810ad9ea8b58c7c11606cb">operations_research::sat::MinimizeCoreWithPropagation</a></div><div class="ttdeci">void MinimizeCoreWithPropagation(TimeLimit *limit, SatSolver *solver, std::vector< Literal > *core)</div><div class="ttdef"><b>Definition:</b> <a href="optimization_8cc_source.html#l00223">optimization.cc:223</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_ae2544d2a3a5ef4c78f8e5891f104ab41"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ae2544d2a3a5ef4c78f8e5891f104ab41">operations_research::sat::VariableIsPositive</a></div><div class="ttdeci">bool VariableIsPositive(IntegerVariable i)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00145">integer.h:145</a></div></div>
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<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>
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<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>
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<div class="ttc" id="aoptimization_8cc_html_af63dcc00f2023fdf498e0829e6fb8a6b"><div class="ttname"><a href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a></div><div class="ttdeci">Literal literal</div><div class="ttdef"><b>Definition:</b> <a href="optimization_8cc_source.html#l00089">optimization.cc:89</a></div></div>
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<div class="ttc" id="aoptimization_8h_html"><div class="ttname"><a href="optimization_8h.html">optimization.h</a></div></div>
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<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>
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<div class="ttc" id="asat_2model_8h_html"><div class="ttname"><a href="sat_2model_8h.html">model.h</a></div></div>
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<div class="ttc" id="asat_2util_8h_html"><div class="ttname"><a href="sat_2util_8h.html">util.h</a></div></div>
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<div class="ttc" id="asat__base_8h_html"><div class="ttname"><a href="sat__base_8h.html">sat_base.h</a></div></div>
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<div class="ttc" id="asat__solver_8h_html"><div class="ttname"><a href="sat__solver_8h.html">sat_solver.h</a></div></div>
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<div class="ttc" id="astrong__integers_8h_html"><div class="ttname"><a href="strong__integers_8h.html">strong_integers.h</a></div></div>
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<div class="ttc" id="astrong__vector_8h_html"><div class="ttname"><a href="strong__vector_8h.html">strong_vector.h</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_integer_literal_html_a3e2eb445631727dd4abf1d5343f16b2f"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">operations_research::sat::IntegerLiteral::LowerOrEqual</a></div><div class="ttdeci">static IntegerLiteral LowerOrEqual(IntegerVariable i, IntegerValue bound)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01393">integer.h:1393</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_integer_literal_html_a6c233aafac25ea66d69de93a83c9be63"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_integer_literal.html#a6c233aafac25ea66d69de93a83c9be63">operations_research::sat::IntegerLiteral::GreaterOrEqual</a></div><div class="ttdeci">static IntegerLiteral GreaterOrEqual(IntegerVariable i, IntegerValue bound)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01387">integer.h:1387</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_level_zero_callback_helper_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_level_zero_callback_helper.html">operations_research::sat::LevelZeroCallbackHelper</a></div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8h_source.html#l00105">integer_search.h:105</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_linear_relaxation_html_a0bffb74eb458b339aa75f20b6c982a60"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a0bffb74eb458b339aa75f20b6c982a60">operations_research::sat::LinearRelaxation::at_most_ones</a></div><div class="ttdeci">std::vector< std::vector< Literal > > at_most_ones</div><div class="ttdef"><b>Definition:</b> <a href="linear__relaxation_8h_source.html#l00033">linear_relaxation.h:33</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_linear_relaxation_html_a787dea05b34122764c7fb5fd13e9a1c9"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_linear_relaxation.html#a787dea05b34122764c7fb5fd13e9a1c9">operations_research::sat::LinearRelaxation::linear_constraints</a></div><div class="ttdeci">std::vector< LinearConstraint > linear_constraints</div><div class="ttdef"><b>Definition:</b> <a href="linear__relaxation_8h_source.html#l00032">linear_relaxation.h:32</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_objective_definition_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_objective_definition.html">operations_research::sat::ObjectiveDefinition</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model__mapping_8h_source.html#l00041">cp_model_mapping.h:41</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_objective_definition_html_a4053d5aed2a34995e0aeb2042878ca7a"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_objective_definition.html#a4053d5aed2a34995e0aeb2042878ca7a">operations_research::sat::ObjectiveDefinition::coeffs</a></div><div class="ttdeci">std::vector< IntegerValue > coeffs</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__mapping_8h_source.html#l00051">cp_model_mapping.h:51</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_objective_definition_html_a73e4094f2d4e2adbe5e8d79a5b61fcd1"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_objective_definition.html#a73e4094f2d4e2adbe5e8d79a5b61fcd1">operations_research::sat::ObjectiveDefinition::vars</a></div><div class="ttdeci">std::vector< IntegerVariable > vars</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__mapping_8h_source.html#l00050">cp_model_mapping.h:50</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_objective_definition_html_aa3c0b31567c91babfffd5f9afc3161dc"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_objective_definition.html#aa3c0b31567c91babfffd5f9afc3161dc">operations_research::sat::ObjectiveDefinition::objective_var</a></div><div class="ttdeci">IntegerVariable objective_var</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__mapping_8h_source.html#l00044">cp_model_mapping.h:44</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_objective_definition_html_adb0775f26a8a26bbd760d700d66c5281"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_objective_definition.html#adb0775f26a8a26bbd760d700d66c5281">operations_research::sat::ObjectiveDefinition::ScaleIntegerObjective</a></div><div class="ttdeci">double ScaleIntegerObjective(IntegerValue value) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__mapping_8h_source.html#l00058">cp_model_mapping.h:58</a></div></div>
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<div class="ttc" id="asynchronization_8h_html"><div class="ttname"><a href="synchronization_8h.html">synchronization.h</a></div></div>
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<div class="ttc" id="atime__limit_8h_html"><div class="ttname"><a href="time__limit_8h.html">time_limit.h</a></div></div>
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<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>
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