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316 lines
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<a href="presolve__context_8cc.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2010-2021 Google LLC</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// you may not use this file except in compliance with the License.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// You may obtain a copy of the License at</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// See the License for the specific language governing permissions and</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "<a class="code" href="presolve__context_8h.html">ortools/sat/presolve_context.h</a>"</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <algorithm></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <cstdint></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <limits></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="map__util_8h.html">ortools/base/map_util.h</a>"</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "<a class="code" href="mathutil_8h.html">ortools/base/mathutil.h</a>"</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="port_2proto__utils_8h.html">ortools/port/proto_utils.h</a>"</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "<a class="code" href="saturated__arithmetic_8h.html">ortools/util/saturated_arithmetic.h</a>"</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">namespace </span>sat {</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_saved_literal.html#adf2db0610413d540ca6c4e4f1cce5fd6"> 29</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html#adf2db0610413d540ca6c4e4f1cce5fd6">SavedLiteral::Get</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html">PresolveContext</a>* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>)<span class="keyword"> const </span>{</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">return</span> <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetLiteralRepresentative(ref_);</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> }</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_saved_variable.html#adf2db0610413d540ca6c4e4f1cce5fd6"> 33</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_saved_variable.html#adf2db0610413d540ca6c4e4f1cce5fd6">SavedVariable::Get</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html">PresolveContext</a>* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>)<span class="keyword"> const </span>{</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">return</span> <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetVariableRepresentative(ref_);</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> }</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a24b22e509fdbdb4cd49ccec6a88c46ab"> 37</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a24b22e509fdbdb4cd49ccec6a88c46ab">PresolveContext::ClearStats</a>() { stats_by_rule_name_.clear(); }</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a67699a1a5830ef51dab6941449b02044"> 39</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a67699a1a5830ef51dab6941449b02044">PresolveContext::NewIntVar</a>(<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>& domain) {</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <a class="code" href="classoperations__research_1_1sat_1_1_integer_variable_proto.html">IntegerVariableProto</a>* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ad03d1e2f94c4ca4c8004ac5355e6504a">add_variables</a>();</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">FillDomainInProto</a>(domain, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a62cd771660767621e917b2c256182c4e">InitializeNewDomains</a>();</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#abef5f55c3278c137faca92b8e433f8ea">variables_size</a>() - 1;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0967c575f9db0c79ed2e7930a0d6a091"> 46</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0967c575f9db0c79ed2e7930a0d6a091">PresolveContext::NewBoolVar</a>() { <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a67699a1a5830ef51dab6941449b02044">NewIntVar</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(0, 1)); }</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ada5d036ab04018d9ee3ed60888843102"> 48</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ada5d036ab04018d9ee3ed60888843102">PresolveContext::GetOrCreateConstantVar</a>(int64_t cst) {</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">if</span> (!<a class="code" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(constant_to_ref_, cst)) {</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  constant_to_ref_[cst] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_variable.html">SavedVariable</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#abef5f55c3278c137faca92b8e433f8ea">variables_size</a>());</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="classoperations__research_1_1sat_1_1_integer_variable_proto.html">IntegerVariableProto</a>* <span class="keyword">const</span> var_proto = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ad03d1e2f94c4ca4c8004ac5355e6504a">add_variables</a>();</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  var_proto-><a class="code" href="classoperations__research_1_1sat_1_1_integer_variable_proto.html#a2266c77ad6db8de45560357c1436e558">add_domain</a>(cst);</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  var_proto->add_domain(cst);</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a62cd771660767621e917b2c256182c4e">InitializeNewDomains</a>();</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> constant_to_ref_[cst].Get(<span class="keyword">this</span>);</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> }</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment">// a => b.</span></div><div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1aadaad9b8af16ab5a208c682e2e1717"> 60</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1aadaad9b8af16ab5a208c682e2e1717">PresolveContext::AddImplication</a>(<span class="keywordtype">int</span> <a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>, <span class="keywordtype">int</span> <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>) {</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>* <span class="keyword">const</span> <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ac01de597eeeff5521a8bf54568bf1373">add_constraints</a>();</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->add_enforcement_literal(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>);</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_bool_and()->add_literals(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>);</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> }</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">// b => x in [lb, ub].</span></div><div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#af0280b2bda95804c4166638e7b490ce9"> 67</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af0280b2bda95804c4166638e7b490ce9">PresolveContext::AddImplyInDomain</a>(<span class="keywordtype">int</span> <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>, <span class="keywordtype">int</span> x, <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>& domain) {</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>* <span class="keyword">const</span> imply = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ac01de597eeeff5521a8bf54568bf1373">add_constraints</a>();</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// Doing it like this seems to use slightly less memory.</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// TODO(user): Find the best way to create such small proto.</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  imply-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a30bb8cd86cbd9eae09b21783f28f8967">mutable_enforcement_literal</a>()->Resize(1, <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>);</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html">LinearConstraintProto</a>* mutable_linear = imply-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>();</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  mutable_linear-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a4392924fce7f5d9851171c0915a478a6">mutable_vars</a>()->Resize(1, x);</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  mutable_linear-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#acf12f419c63aff52dc9ba6292586e9fc">mutable_coeffs</a>()->Resize(1, 1);</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">FillDomainInProto</a>(domain, mutable_linear);</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> }</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a77e37831a01ff737a7b5bd7e12c2ecf7"> 79</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a77e37831a01ff737a7b5bd7e12c2ecf7">PresolveContext::DomainIsEmpty</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].IsEmpty();</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div><div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2"> 83</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">PresolveContext::IsFixed</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref), domains.size());</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a77e37831a01ff737a7b5bd7e12c2ecf7">DomainIsEmpty</a>(ref));</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].IsFixed();</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> }</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8"> 89</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">PresolveContext::CanBeUsedAsLiteral</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">return</span> domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].Min() >= 0 && domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].Max() <= 1;</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> }</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2"> 94</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">PresolveContext::LiteralIsTrue</a>(<span class="keywordtype">int</span> lit)<span class="keyword"> const </span>{</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">CanBeUsedAsLiteral</a>(lit));</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(lit)) {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> domains[lit].Min() == 1;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(lit)].Max() == 0;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> }</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9f3443b281c705edf1779f746637ad9b"> 103</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9f3443b281c705edf1779f746637ad9b">PresolveContext::LiteralIsFalse</a>(<span class="keywordtype">int</span> lit)<span class="keyword"> const </span>{</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">CanBeUsedAsLiteral</a>(lit));</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(lit)) {</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> domains[lit].Max() == 0;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">return</span> domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(lit)].Min() == 1;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> }</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div><div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b"> 112</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">PresolveContext::MinOf</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a77e37831a01ff737a7b5bd7e12c2ecf7">DomainIsEmpty</a>(ref));</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref) ? domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].Min()</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  : -domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].Max();</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> }</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div><div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9"> 118</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">PresolveContext::MaxOf</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a77e37831a01ff737a7b5bd7e12c2ecf7">DomainIsEmpty</a>(ref));</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref) ? domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].Max()</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  : -domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].Min();</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> }</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div><div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa184497ce787d35a517f0879117ff2e5"> 124</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">PresolveContext::MinOf</a>(<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html">LinearExpressionProto</a>& expr)<span class="keyword"> const </span>{</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  int64_t result = expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a728b5b75967156875ac60336daf4e29d">offset</a>();</div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a76c521af56ab0e96eb06deeb679f46f7">vars_size</a>(); ++i) {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">const</span> int64_t coeff = expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(i);</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">if</span> (coeff > 0) {</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  result += coeff * <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i));</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  result += coeff * <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i));</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> }</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div><div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9cbf216d2567a55091668dda32e9024d"> 137</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">PresolveContext::MaxOf</a>(<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html">LinearExpressionProto</a>& expr)<span class="keyword"> const </span>{</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  int64_t result = expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a728b5b75967156875ac60336daf4e29d">offset</a>();</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a76c521af56ab0e96eb06deeb679f46f7">vars_size</a>(); ++i) {</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">const</span> int64_t coeff = expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(i);</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordflow">if</span> (coeff > 0) {</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  result += coeff * <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i));</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  result += coeff * <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i));</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> }</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00150"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae7450e5b3b9b22663ec7e1fe0d82b6b9"> 150</a></span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae7450e5b3b9b22663ec7e1fe0d82b6b9">PresolveContext::DomainSuperSetOf</a>(</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html">LinearExpressionProto</a>& expr)<span class="keyword"> const </span>{</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> result(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a728b5b75967156875ac60336daf4e29d">offset</a>());</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a76c521af56ab0e96eb06deeb679f46f7">vars_size</a>(); ++i) {</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  result = result.<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i)).MultiplicationBy(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(i)));</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  }</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> }</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div><div class="line"><a name="l00160"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#adff3b5f900c3d62132781fc25b54fb1a"> 160</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#adff3b5f900c3d62132781fc25b54fb1a">PresolveContext::ExpressionIsAffineBoolean</a>(</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html">LinearExpressionProto</a>& expr)<span class="keyword"> const </span>{</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span> (expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>().size() != 1) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">CanBeUsedAsLiteral</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(0));</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> }</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad1cddf8749d0ce1686f1f428926cfb1d"> 166</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad1cddf8749d0ce1686f1f428926cfb1d">PresolveContext::LiteralForExpressionMax</a>(</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html">LinearExpressionProto</a>& expr)<span class="keyword"> const </span>{</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> ref = expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(0);</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref) == (expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(0) > 0) ? ref : <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(ref);</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> }</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment">// Note that we only support converted intervals.</span></div><div class="line"><a name="l00173"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9da1edd6532c2c2b0c09544eade57805"> 173</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9da1edd6532c2c2b0c09544eade57805">PresolveContext::IntervalIsConstant</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>& <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref);</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (!<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.enforcement_literal().empty()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">if</span> (!<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.interval().has_start_view()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.interval().start_view().vars()) {</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  }</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.interval().size_view().vars()) {</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.interval().end_view().vars()) {</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> }</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div><div class="line"><a name="l00189"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#acb5ca2d891a58b6b9e55eee532c2557c"> 189</a></span> std::string <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#acb5ca2d891a58b6b9e55eee532c2557c">PresolveContext::IntervalDebugString</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9da1edd6532c2c2b0c09544eade57805">IntervalIsConstant</a>(ct_ref)) {</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">return</span> absl::StrCat(<span class="stringliteral">"interval_"</span>, ct_ref, <span class="stringliteral">"("</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18">StartMin</a>(ct_ref), <span class="stringliteral">".."</span>,</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4">EndMax</a>(ct_ref), <span class="stringliteral">")"</span>);</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad72f81052c0b904f369ac1cee7217b83">ConstraintIsOptional</a>(ct_ref)) {</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> =</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref).<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#acdc90a25e531e4180c495f4ecf2aca2e">enforcement_literal</a>(0);</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">SizeMin</a>(ct_ref) == <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae3ad719e8a03c11498d2d0ab18558f95">SizeMax</a>(ct_ref)) {</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> absl::StrCat(<span class="stringliteral">"interval_"</span>, ct_ref, <span class="stringliteral">"(lit="</span>, <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <span class="stringliteral">", "</span>,</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18">StartMin</a>(ct_ref), <span class="stringliteral">" --("</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">SizeMin</a>(ct_ref), <span class="stringliteral">")--> "</span>,</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4">EndMax</a>(ct_ref), <span class="stringliteral">")"</span>);</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">return</span> absl::StrCat(<span class="stringliteral">"interval_"</span>, ct_ref, <span class="stringliteral">"(lit="</span>, <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <span class="stringliteral">", "</span>,</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18">StartMin</a>(ct_ref), <span class="stringliteral">" --("</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">SizeMin</a>(ct_ref), <span class="stringliteral">".."</span>,</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae3ad719e8a03c11498d2d0ab18558f95">SizeMax</a>(ct_ref), <span class="stringliteral">")--> "</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4">EndMax</a>(ct_ref), <span class="stringliteral">")"</span>);</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  }</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">SizeMin</a>(ct_ref) == <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae3ad719e8a03c11498d2d0ab18558f95">SizeMax</a>(ct_ref)) {</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">return</span> absl::StrCat(<span class="stringliteral">"interval_"</span>, ct_ref, <span class="stringliteral">"("</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18">StartMin</a>(ct_ref), <span class="stringliteral">" --("</span>,</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">SizeMin</a>(ct_ref), <span class="stringliteral">")--> "</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4">EndMax</a>(ct_ref), <span class="stringliteral">")"</span>);</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">return</span> absl::StrCat(<span class="stringliteral">"interval_"</span>, ct_ref, <span class="stringliteral">"("</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18">StartMin</a>(ct_ref), <span class="stringliteral">" --("</span>,</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">SizeMin</a>(ct_ref), <span class="stringliteral">".."</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae3ad719e8a03c11498d2d0ab18558f95">SizeMax</a>(ct_ref), <span class="stringliteral">")--> "</span>,</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4">EndMax</a>(ct_ref), <span class="stringliteral">")"</span>);</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> }</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div><div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18"> 215</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18">PresolveContext::StartMin</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_interval_constraint_proto.html">IntervalConstraintProto</a>& <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> =</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref).<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a2ec4b0b15e694caaaa842243694c51f5">interval</a>();</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.has_start_view()) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.start_view());</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.start());</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span> }</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div><div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a83cb3816d487395542f17a17776b9a1a"> 222</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a83cb3816d487395542f17a17776b9a1a">PresolveContext::StartMax</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_interval_constraint_proto.html">IntervalConstraintProto</a>& <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> =</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref).<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a2ec4b0b15e694caaaa842243694c51f5">interval</a>();</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.has_start_view()) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.start_view());</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.start());</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span> }</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span> </div><div class="line"><a name="l00229"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5cc6a3ed49ec11734164c7ef646b15d5"> 229</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5cc6a3ed49ec11734164c7ef646b15d5">PresolveContext::EndMin</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_interval_constraint_proto.html">IntervalConstraintProto</a>& <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> =</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref).<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a2ec4b0b15e694caaaa842243694c51f5">interval</a>();</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.has_end_view()) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.end_view());</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.end());</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span> }</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div><div class="line"><a name="l00236"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4"> 236</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4">PresolveContext::EndMax</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_interval_constraint_proto.html">IntervalConstraintProto</a>& <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> =</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref).<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a2ec4b0b15e694caaaa842243694c51f5">interval</a>();</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.has_end_view()) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.end_view());</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.end());</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> }</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> </div><div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382"> 243</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">PresolveContext::SizeMin</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_interval_constraint_proto.html">IntervalConstraintProto</a>& <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> =</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref).<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a2ec4b0b15e694caaaa842243694c51f5">interval</a>();</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.has_size_view()) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.size_view());</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.size());</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span> }</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div><div class="line"><a name="l00250"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae3ad719e8a03c11498d2d0ab18558f95"> 250</a></span> int64_t <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae3ad719e8a03c11498d2d0ab18558f95">PresolveContext::SizeMax</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_interval_constraint_proto.html">IntervalConstraintProto</a>& <a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a> =</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref).<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a2ec4b0b15e694caaaa842243694c51f5">interval</a>();</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.has_size_view()) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.size_view());</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a>.size());</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> }</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment">// Important: To be sure a variable can be removed, we need it to not be a</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment">// representative of both affine and equivalence relation.</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="keywordtype">bool</span> PresolveContext::VariableIsNotRepresentativeOfEquivalenceClass(</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)<span class="keyword"> const </span>{</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keywordflow">if</span> (affine_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#abc96755c0de80a81fd2730d3f2e85523">ClassSize</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) > 1 &&</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  affine_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">Get</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">if</span> (var_equiv_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#abc96755c0de80a81fd2730d3f2e85523">ClassSize</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) > 1 &&</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  var_equiv_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">Get</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  }</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> }</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div><div class="line"><a name="l00273"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0000c1621c1de75511d17c9d14aae0e8"> 273</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0000c1621c1de75511d17c9d14aae0e8">PresolveContext::VariableIsRemovable</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">return</span> VariableIsNotRepresentativeOfEquivalenceClass(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) &&</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  !<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ab7b13b808e3dea6fc1e4006f7134e9f9">keep_all_feasible_solutions</a>;</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> }</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span> </div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment">// Tricky: If this variable is equivalent to another one (but not the</span></div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment">// representative) and appear in just one constraint, then this constraint must</span></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment">// be the affine defining one. And in this case the code using this function</span></div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment">// should do the proper stuff.</span></div><div class="line"><a name="l00283"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a54cf7f0077717d59a828b656b60c1615"> 283</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a54cf7f0077717d59a828b656b60c1615">PresolveContext::VariableIsUniqueAndRemovable</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f">ConstraintVariableGraphIsUpToDate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordflow">return</span> var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].size() == 1 && <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0000c1621c1de75511d17c9d14aae0e8">VariableIsRemovable</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> }</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> </div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment">// Tricky: Same remark as for VariableIsUniqueAndRemovable().</span></div><div class="line"><a name="l00290"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a34e2cd343e0dfb06af9f67df8c4c3502"> 290</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a34e2cd343e0dfb06af9f67df8c4c3502">PresolveContext::VariableWithCostIsUniqueAndRemovable</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f">ConstraintVariableGraphIsUpToDate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0000c1621c1de75511d17c9d14aae0e8">VariableIsRemovable</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) &&</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].contains(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>) &&</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].size() == 2;</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> }</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="comment">// Here, even if the variable is equivalent to others, if its affine defining</span></div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="comment">// constraints where removed, then it is not needed anymore.</span></div><div class="line"><a name="l00300"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ab246112417bad87cb948820e304208ab"> 300</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ab246112417bad87cb948820e304208ab">PresolveContext::VariableIsNotUsedAnymore</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f">ConstraintVariableGraphIsUpToDate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keywordflow">return</span> var_to_constraints_[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].empty();</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> }</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div><div class="line"><a name="l00305"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a6939dc7b9db01cf3deff10405e260461"> 305</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a6939dc7b9db01cf3deff10405e260461">PresolveContext::MarkVariableAsRemoved</a>(<span class="keywordtype">int</span> ref) {</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  removed_variables_.insert(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref));</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> }</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> </div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="comment">// Note(user): I added an indirection and a function for this to be able to</span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="comment">// display debug information when this return false. This should actually never</span></div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="comment">// return false in the cases where it is used.</span></div><div class="line"><a name="l00312"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded"> 312</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">PresolveContext::VariableWasRemoved</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="comment">// It is okay to reuse removed fixed variable.</span></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(ref)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">if</span> (!removed_variables_.contains(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref))) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordflow">if</span> (!var_to_constraints_[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].empty()) {</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">"Variable "</span>, <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref),</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="stringliteral">" was removed, yet it appears in some constraints!"</span>);</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">"affine relation: "</span>,</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a66810fcd97b5e9c5fd745226607cd7aa">AffineRelationDebugString</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)));</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> c : var_to_constraints_[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)]) {</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  logger_, <span class="stringliteral">"constraint #"</span>, c, <span class="stringliteral">" : "</span>,</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  c >= 0 ? <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(c).ShortDebugString() : <span class="stringliteral">""</span>);</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  }</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> }</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> </div><div class="line"><a name="l00330"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#af7e074480c08f4887da40ca045624b6c"> 330</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af7e074480c08f4887da40ca045624b6c">PresolveContext::VariableIsOnlyUsedInEncodingAndMaybeInObjective</a>(</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f">ConstraintVariableGraphIsUpToDate</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">return</span> var_to_num_linear1_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] == var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].size() ||</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  (var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].contains(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>) &&</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  var_to_num_linear1_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] + 1 == var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].size());</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> }</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span> </div><div class="line"><a name="l00339"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00"> 339</a></span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">PresolveContext::DomainOf</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> result;</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) {</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  result = domains[ref];</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  result = domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].Negation();</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  }</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span> }</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div><div class="line"><a name="l00349"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9dd01897679ba54fca524a3b0b7d5612"> 349</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9dd01897679ba54fca524a3b0b7d5612">PresolveContext::DomainContains</a>(<span class="keywordtype">int</span> ref, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)<span class="keyword"> const </span>{</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">if</span> (!<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) {</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">return</span> domains[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)].Contains(-<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  }</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keywordflow">return</span> domains[ref].Contains(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> }</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span> </div><div class="line"><a name="l00356"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55"> 356</a></span> ABSL_MUST_USE_RESULT <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">PresolveContext::IntersectDomainWith</a>(</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordtype">int</span> ref, <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>& domain, <span class="keywordtype">bool</span>* domain_modified) {</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a77e37831a01ff737a7b5bd7e12c2ecf7">DomainIsEmpty</a>(ref));</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> </div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) {</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">if</span> (domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].IsIncludedIn(domain)) {</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  }</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].IntersectionWith(domain);</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> temp = domain.<a class="code" href="classoperations__research_1_1_domain.html#a1e3aa02e2d8300db5f1fc12f6b3228fa">Negation</a>();</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">if</span> (domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].IsIncludedIn(temp)) {</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  }</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] = domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].IntersectionWith(temp);</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  }</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span> </div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordflow">if</span> (domain_modified != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  *domain_modified = <span class="keyword">true</span>;</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  }</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a02302d3a45d02003dcbf288d045ebd86">modified_domains</a>.<a class="code" href="classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7">Set</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordflow">if</span> (domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].IsEmpty()) {</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  is_unsat_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  }</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span> </div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="comment">// Propagate the domain of the representative right away.</span></div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="comment">// Note that the recursive call should only by one level deep.</span></div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">if</span> (r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>,</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  .AdditionWith(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(-r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>))</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a1341b29865c5167a64de30c797672e4c">InverseMultiplicationBy</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>));</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span> }</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div><div class="line"><a name="l00393"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa4fb869526d3ab2acbcec775bb18497b"> 393</a></span> ABSL_MUST_USE_RESULT <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">PresolveContext::IntersectDomainWith</a>(</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html">LinearExpressionProto</a>& expr, <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>& domain,</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordtype">bool</span>* domain_modified) {</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordflow">if</span> (expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>().empty()) {</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keywordflow">return</span> domain.<a class="code" href="classoperations__research_1_1_domain.html#a22c6c2f121586b5d76feb4b0e536dfde">Contains</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a728b5b75967156875ac60336daf4e29d">offset</a>());</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  }</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">if</span> (expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>().size() == 1) { <span class="comment">// Affine</span></div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(0),</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  domain.<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(-expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a728b5b75967156875ac60336daf4e29d">offset</a>()))</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a1341b29865c5167a64de30c797672e4c">InverseMultiplicationBy</a>(expr.<a class="code" href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(0)),</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  domain_modified);</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  }</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="comment">// We don't do anything for longer expression for now.</span></div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span> }</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span> </div><div class="line"><a name="l00410"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad0d1a630c07ba2321cf43d97a425bc30"> 410</a></span> ABSL_MUST_USE_RESULT <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad0d1a630c07ba2321cf43d97a425bc30">PresolveContext::SetLiteralToFalse</a>(<span class="keywordtype">int</span> lit) {</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(lit);</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(lit) ? 0 : 1;</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>));</div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span> }</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span> </div><div class="line"><a name="l00416"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37ed950834f3f3b427a707631fd745f4"> 416</a></span> ABSL_MUST_USE_RESULT <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37ed950834f3f3b427a707631fd745f4">PresolveContext::SetLiteralToTrue</a>(<span class="keywordtype">int</span> lit) {</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad0d1a630c07ba2321cf43d97a425bc30">SetLiteralToFalse</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(lit));</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span> }</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div><div class="line"><a name="l00420"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a100a8cc947bbdb3fd264d42eeeeaa849"> 420</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a100a8cc947bbdb3fd264d42eeeeaa849">PresolveContext::ConstraintIsInactive</a>(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)<span class="keyword"> const </span>{</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>& <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>.constraint_case() ==</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  ConstraintProto::ConstraintCase::CONSTRAINT_NOT_SET) {</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  }</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>.enforcement_literal()) {</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9f3443b281c705edf1779f746637ad9b">LiteralIsFalse</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  }</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span> }</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> </div><div class="line"><a name="l00432"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad72f81052c0b904f369ac1cee7217b83"> 432</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad72f81052c0b904f369ac1cee7217b83">PresolveContext::ConstraintIsOptional</a>(<span class="keywordtype">int</span> ct_ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>& <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(ct_ref);</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="keywordtype">bool</span> contains_one_free_literal = <span class="keyword">false</span>;</div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>.enforcement_literal()) {</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9f3443b281c705edf1779f746637ad9b">LiteralIsFalse</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">LiteralIsTrue</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) contains_one_free_literal = <span class="keyword">true</span>;</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  }</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">return</span> contains_one_free_literal;</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span> }</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span> </div><div class="line"><a name="l00442"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210"> 442</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">PresolveContext::UpdateRuleStats</a>(<span class="keyword">const</span> std::string& <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>, <span class="keywordtype">int</span> num_times) {</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="comment">// We only count if we are going to display it.</span></div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">if</span> (logger_-><a class="code" href="classoperations__research_1_1_solver_logger.html#a9492cb97f5ec0ecbce0b5ef1b085738b">LoggingIsEnabled</a>()) {</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5f9c1ea2555cc36fcd716296e54ed17a">num_presolve_operations</a> << <span class="stringliteral">" : "</span> << <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>;</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  stats_by_rule_name_[<a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>] += num_times;</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5f9c1ea2555cc36fcd716296e54ed17a">num_presolve_operations</a> += num_times;</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span> }</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span> </div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="keywordtype">void</span> PresolveContext::UpdateLinear1Usage(<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>& <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <span class="keywordtype">int</span> c) {</div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> old_var = constraint_to_linear1_var_[c];</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keywordflow">if</span> (old_var >= 0) {</div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  var_to_num_linear1_[old_var]--;</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  }</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>.constraint_case() == ConstraintProto::ConstraintCase::kLinear &&</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>.linear().vars().size() == 1) {</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>.linear().vars(0));</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  constraint_to_linear1_var_[c] = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>;</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  var_to_num_linear1_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>]++;</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span> }</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span> </div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span> <span class="keywordtype">void</span> PresolveContext::AddVariableUsage(<span class="keywordtype">int</span> c) {</div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="keyword">const</span> ConstraintProto& <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(c);</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  constraint_to_vars_[c] = <a class="code" href="namespaceoperations__research_1_1sat.html#a1d467595ed8fe5b85dc95328ee1c2770">UsedVariables</a>(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  constraint_to_intervals_[c] = <a class="code" href="namespaceoperations__research_1_1sat.html#a217ba4c51953c701a68d6572d79801f1">UsedIntervals</a>(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> v : constraint_to_vars_[c]) {</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(v));</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  var_to_constraints_[v].insert(c);</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  }</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : constraint_to_intervals_[c]) interval_usage_[i]++;</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  UpdateLinear1Usage(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, c);</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span> }</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span> </div><div class="line"><a name="l00476"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ab75a27c0aeda2de9c3957719b8196c36"> 476</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ab75a27c0aeda2de9c3957719b8196c36">PresolveContext::UpdateConstraintVariableUsage</a>(<span class="keywordtype">int</span> c) {</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span>;</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <a class="code" href="base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0">DCHECK_EQ</a>(constraint_to_vars_.size(), <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#aeaf0da781ca9b370d96b7fbd3f74266a">constraints_size</a>());</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>& <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(c);</div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span> </div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">// We don't optimize the interval usage as this is not super frequent.</span></div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : constraint_to_intervals_[c]) interval_usage_[i]--;</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  constraint_to_intervals_[c] = <a class="code" href="namespaceoperations__research_1_1sat.html#a217ba4c51953c701a68d6572d79801f1">UsedIntervals</a>(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> i : constraint_to_intervals_[c]) interval_usage_[i]++;</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span> </div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="comment">// For the variables, we avoid an erase() followed by an insert() for the</span></div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="comment">// variables that didn't change.</span></div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  tmp_new_usage_ = <a class="code" href="namespaceoperations__research_1_1sat.html#a1d467595ed8fe5b85dc95328ee1c2770">UsedVariables</a>(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>);</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keyword">const</span> std::vector<int>& old_usage = constraint_to_vars_[c];</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> old_size = old_usage.size();</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keywordtype">int</span> i = 0;</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : tmp_new_usage_) {</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="keywordflow">while</span> (i < old_size && old_usage[i] < <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  var_to_constraints_[old_usage[i]].erase(c);</div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  ++i;</div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  }</div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="keywordflow">if</span> (i < old_size && old_usage[i] == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  ++i;</div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].insert(c);</div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  }</div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  }</div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordflow">for</span> (; i < old_size; ++i) var_to_constraints_[old_usage[i]].erase(c);</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  constraint_to_vars_[c] = tmp_new_usage_;</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span> </div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  UpdateLinear1Usage(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, c);</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span> }</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span> </div><div class="line"><a name="l00510"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f"> 510</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f">PresolveContext::ConstraintVariableGraphIsUpToDate</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keywordflow">return</span> constraint_to_vars_.size() == <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#aeaf0da781ca9b370d96b7fbd3f74266a">constraints_size</a>();</div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span> }</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span> </div><div class="line"><a name="l00514"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a52bccf051bec19d96584096844070eaa"> 514</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a52bccf051bec19d96584096844070eaa">PresolveContext::UpdateNewConstraintsVariableUsage</a>() {</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span>;</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> old_size = constraint_to_vars_.size();</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> new_size = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#aeaf0da781ca9b370d96b7fbd3f74266a">constraints_size</a>();</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <a class="code" href="base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c">CHECK_LE</a>(old_size, new_size);</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  constraint_to_vars_.resize(new_size);</div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  constraint_to_linear1_var_.resize(new_size, -1);</div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  constraint_to_intervals_.resize(new_size);</div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  interval_usage_.resize(new_size);</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = old_size; c < new_size; ++c) {</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  AddVariableUsage(c);</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  }</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span> }</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span> </div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span> <span class="comment">// TODO(user): Also test var_to_constraints_ !!</span></div><div class="line"><a name="l00529"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a11f5290ed8216eea13b9d7383cb4c55f"> 529</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a11f5290ed8216eea13b9d7383cb4c55f">PresolveContext::ConstraintVariableUsageIsConsistent</a>() {</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// We do not care in this case.</span></div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="keywordflow">if</span> (constraint_to_vars_.size() != <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#aeaf0da781ca9b370d96b7fbd3f74266a">constraints_size</a>()) {</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Wrong constraint_to_vars size!"</span>;</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  }</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < constraint_to_vars_.size(); ++c) {</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordflow">if</span> (constraint_to_vars_[c] !=</div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a1d467595ed8fe5b85dc95328ee1c2770">UsedVariables</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(c))) {</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Wrong variables usage for constraint: \n"</span></div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  << <a class="code" href="namespaceoperations__research.html#aba32b1f1ee3ffb4194aa8af155f827cd">ProtobufDebugString</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">constraints</a>(c))</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  << <span class="stringliteral">"old_size: "</span> << constraint_to_vars_[c].size();</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  }</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  }</div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="keywordtype">int</span> num_in_objective = 0;</div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> v = 0; v < var_to_constraints_.size(); ++v) {</div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordflow">if</span> (var_to_constraints_[v].contains(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>)) {</div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  ++num_in_objective;</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">if</span> (!objective_map_.contains(v)) {</div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Variable "</span> << v</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  << <span class="stringliteral">" is marked as part of the objective but isn't."</span>;</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  }</div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  }</div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  }</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="keywordflow">if</span> (num_in_objective != objective_map_.size()) {</div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Not all variables are marked as part of the objective"</span>;</div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  }</div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span> </div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span> }</div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span> </div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span> <span class="comment">// If a Boolean variable (one with domain [0, 1]) appear in this affine</span></div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span> <span class="comment">// equivalence class, then we want its representative to be Boolean. Note that</span></div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span> <span class="comment">// this is always possible because a Boolean variable can never be equal to a</span></div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span> <span class="comment">// multiple of another if std::abs(coeff) is greater than 1 and if it is not</span></div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span> <span class="comment">// fixed to zero. This is important because it allows to simply use the same</span></div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span> <span class="comment">// representative for any referenced literals.</span></div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span> <span class="comment">//</span></div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span> <span class="comment">// Note(user): When both domain contains [0,1] and later the wrong variable</span></div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span> <span class="comment">// become usable as boolean, then we have a bug. Because of that, the code</span></div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span> <span class="comment">// for GetLiteralRepresentative() is not as simple as it should be.</span></div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span> <span class="keywordtype">bool</span> PresolveContext::AddRelation(<span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y, int64_t c, int64_t o,</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <a class="code" href="classoperations__research_1_1_affine_relation.html">AffineRelation</a>* repo) {</div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="comment">// When the coefficient is larger than one, then if later one variable becomes</span></div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="comment">// Boolean, it must be the representative.</span></div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">if</span> (std::abs(c) != 1) <span class="keywordflow">return</span> repo-><a class="code" href="classoperations__research_1_1_affine_relation.html#a3fd7611957e9eaebe9d43c23705e720b">TryAdd</a>(x, y, c, o);</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span> </div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(x));</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(y));</div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span> </div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="comment">// To avoid integer overflow, we always want to use the representative with</span></div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="comment">// the smallest domain magnitude. Otherwise we might express a variable in say</span></div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="comment">// [0, 3] as ([x, x + 3] - x) for an arbitrary large x, and substituting</span></div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="comment">// something like this in a linear expression could break our overflow</span></div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="comment">// precondition.</span></div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="comment">//</span></div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="comment">// Note that if either rep_x or rep_y can be used as a literal, then it will</span></div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="comment">// also be the variable with the smallest domain magnitude (1 or 0 if fixed).</span></div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> rep_x = repo-><a class="code" href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">Get</a>(x).<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>;</div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> rep_y = repo-><a class="code" href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">Get</a>(y).<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>;</div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keyword">const</span> int64_t m_x = <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(rep_x)), std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(rep_x)));</div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  <span class="keyword">const</span> int64_t m_y = <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(rep_y)), std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(rep_y)));</div><div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  <span class="keywordtype">bool</span> allow_rep_x = m_x < m_y;</div><div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  <span class="keywordtype">bool</span> allow_rep_y = m_y < m_x;</div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">if</span> (m_x == m_y) {</div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <span class="comment">// If both magnitude are the same, we prefer a positive domain.</span></div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  <span class="comment">// This is important so we don't use [-1, 0] as a representative for [0, 1].</span></div><div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  allow_rep_x = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(rep_x) >= <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(rep_y);</div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  allow_rep_y = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(rep_y) >= <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(rep_x);</div><div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  }</div><div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="keywordflow">if</span> (allow_rep_x && allow_rep_y) {</div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  <span class="comment">// If both representative are okay, we force the choice to the variable</span></div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="comment">// with lower index. This is needed because we have two "equivalence"</span></div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="comment">// relations, and we want the same representative in both.</span></div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="keywordflow">if</span> (rep_x < rep_y) {</div><div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  allow_rep_y = <span class="keyword">false</span>;</div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  allow_rep_x = <span class="keyword">false</span>;</div><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  }</div><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  }</div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">return</span> repo-><a class="code" href="classoperations__research_1_1_affine_relation.html#a3fd7611957e9eaebe9d43c23705e720b">TryAdd</a>(x, y, c, o, allow_rep_x, allow_rep_y);</div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span> }</div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span> </div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span> <span class="comment">// Note that we just add the relation to the var_equiv_relations_, not to the</span></div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span> <span class="comment">// affine one. This is enough, and should prevent overflow in the affine</span></div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span> <span class="comment">// relation class: if we keep chaining variable fixed to zero, the coefficient</span></div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span> <span class="comment">// in the relation can overflow. For instance if x = 200 y and z = 200 t,</span></div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span> <span class="comment">// nothing prevent us if all end up being zero, to say y = z, which will result</span></div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span> <span class="comment">// in x = 200^2 t. If we make a few bad choices like this, then we can have an</span></div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span> <span class="comment">// overflow.</span></div><div class="line"><a name="l00622"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#af4847724208dd09ba3fea8b53132d197"> 622</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af4847724208dd09ba3fea8b53132d197">PresolveContext::ExploitFixedDomain</a>(<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="keyword">const</span> int64_t <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">min</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <span class="keywordflow">if</span> (<a class="code" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(constant_to_ref_, <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">min</a>)) {</div><div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> rep = constant_to_ref_[<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">min</a>].Get(<span class="keyword">this</span>);</div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(rep)) {</div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <span class="keywordflow">if</span> (rep != <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  AddRelation(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, rep, 1, 0, &var_equiv_relations_);</div><div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  }</div><div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(rep) == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">min</a>, 0);</div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  AddRelation(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(rep), -1, 0, &var_equiv_relations_);</div><div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  }</div><div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  }</div><div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  constant_to_ref_[<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">min</a>] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_variable.html">SavedVariable</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  }</div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span> }</div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span> </div><div class="line"><a name="l00644"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5c2f01871b9baa2bc0dc556803c5a1ad"> 644</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5c2f01871b9baa2bc0dc556803c5a1ad">PresolveContext::PropagateAffineRelation</a>(<span class="keywordtype">int</span> ref) {</div><div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="keywordflow">if</span> (r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00648"></a><span class="lineno"> 648</span> </div><div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="comment">// Propagate domains both ways.</span></div><div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="comment">// var = coeff * rep + offset</span></div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>,</div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)</div><div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  .AdditionWith(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(-r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>))</div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a1341b29865c5167a64de30c797672e4c">InverseMultiplicationBy</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>))) {</div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  }</div><div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>)</div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a63a708c626b59b4504ddb879496c894e">MultiplicationBy</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>)</div><div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>)))) {</div><div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  }</div><div class="line"><a name="l00662"></a><span class="lineno"> 662</span> </div><div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00664"></a><span class="lineno"> 664</span> }</div><div class="line"><a name="l00665"></a><span class="lineno"> 665</span> </div><div class="line"><a name="l00666"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aabb328e6969888226a7a69a972e22c56"> 666</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aabb328e6969888226a7a69a972e22c56">PresolveContext::RemoveAllVariablesFromAffineRelationConstraint</a>() {</div><div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& ref_map : var_to_constraints_) {</div><div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  ref_map.erase(<a class="code" href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">kAffineRelationConstraint</a>);</div><div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  }</div><div class="line"><a name="l00670"></a><span class="lineno"> 670</span> }</div><div class="line"><a name="l00671"></a><span class="lineno"> 671</span> </div><div class="line"><a name="l00672"></a><span class="lineno"> 672</span> <span class="comment">// We only call that for a non representative variable that is only used in</span></div><div class="line"><a name="l00673"></a><span class="lineno"> 673</span> <span class="comment">// the kAffineRelationConstraint. Such variable can be ignored and should never</span></div><div class="line"><a name="l00674"></a><span class="lineno"> 674</span> <span class="comment">// be seen again in the presolve.</span></div><div class="line"><a name="l00675"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5763f8709716596a3aa728bacae05a7b"> 675</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5763f8709716596a3aa728bacae05a7b">PresolveContext::RemoveVariableFromAffineRelation</a>(<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> rep = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>;</div><div class="line"><a name="l00677"></a><span class="lineno"> 677</span> </div><div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, rep);</div><div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].size(), 1);</div><div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].contains(<a class="code" href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">kAffineRelationConstraint</a>));</div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(var_to_constraints_[rep].contains(<a class="code" href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">kAffineRelationConstraint</a>));</div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span> </div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="comment">// We shouldn't reuse this variable again!</span></div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a6939dc7b9db01cf3deff10405e260461">MarkVariableAsRemoved</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span> </div><div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">kAffineRelationConstraint</a>);</div><div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  affine_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#a2dfbb2acebf03bbb98cc1c54256fdead">IgnoreFromClassSize</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  var_equiv_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#a2dfbb2acebf03bbb98cc1c54256fdead">IgnoreFromClassSize</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00690"></a><span class="lineno"> 690</span> </div><div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="comment">// If the representative is left alone, we can remove it from the special</span></div><div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <span class="comment">// affine relation constraint too.</span></div><div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="keywordflow">if</span> (affine_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#abc96755c0de80a81fd2730d3f2e85523">ClassSize</a>(rep) == 1 &&</div><div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  var_equiv_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#abc96755c0de80a81fd2730d3f2e85523">ClassSize</a>(rep) == 1) {</div><div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  var_to_constraints_[rep].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">kAffineRelationConstraint</a>);</div><div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  }</div><div class="line"><a name="l00697"></a><span class="lineno"> 697</span> </div><div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  <span class="keywordflow">if</span> (<a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(2)) {</div><div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Removing affine relation: "</span> << <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a66810fcd97b5e9c5fd745226607cd7aa">AffineRelationDebugString</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  }</div><div class="line"><a name="l00701"></a><span class="lineno"> 701</span> }</div><div class="line"><a name="l00702"></a><span class="lineno"> 702</span> </div><div class="line"><a name="l00703"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a3999a4ff1f53b54b40c8cd396105572a"> 703</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a3999a4ff1f53b54b40c8cd396105572a">PresolveContext::StoreAffineRelation</a>(<span class="keywordtype">int</span> ref_x, <span class="keywordtype">int</span> ref_y, int64_t coeff,</div><div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  int64_t offset) {</div><div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(coeff, 0);</div><div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00707"></a><span class="lineno"> 707</span> </div><div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="comment">// TODO(user): I am not 100% sure why, but sometimes the representative is</span></div><div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  <span class="comment">// fixed but that is not propagated to ref_x or ref_y and this causes issues.</span></div><div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5c2f01871b9baa2bc0dc556803c5a1ad">PropagateAffineRelation</a>(ref_x)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5c2f01871b9baa2bc0dc556803c5a1ad">PropagateAffineRelation</a>(ref_y)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00712"></a><span class="lineno"> 712</span> </div><div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(ref_x)) {</div><div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="keyword">const</span> int64_t lhs = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref_x).<a class="code" href="classoperations__research_1_1_domain.html#a8cf21a67f7d81a800ff912239bb2db64">Min</a>() - offset;</div><div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keywordflow">if</span> (lhs % std::abs(coeff) != 0) {</div><div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  is_unsat_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  }</div><div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  static_cast<void>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(ref_y, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(lhs / coeff)));</div><div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"affine: fixed"</span>);</div><div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  }</div><div class="line"><a name="l00723"></a><span class="lineno"> 723</span> </div><div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(ref_y)) {</div><div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  <span class="keyword">const</span> int64_t value_x = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref_y).<a class="code" href="classoperations__research_1_1_domain.html#a8cf21a67f7d81a800ff912239bb2db64">Min</a>() * coeff + offset;</div><div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  static_cast<void>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(ref_x, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(value_x)));</div><div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"affine: fixed"</span>);</div><div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  }</div><div class="line"><a name="l00730"></a><span class="lineno"> 730</span> </div><div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <span class="comment">// If both are already in the same class, we need to make sure the relations</span></div><div class="line"><a name="l00732"></a><span class="lineno"> 732</span>  <span class="comment">// are compatible.</span></div><div class="line"><a name="l00733"></a><span class="lineno"> 733</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> rx = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(ref_x);</div><div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> ry = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(ref_y);</div><div class="line"><a name="l00735"></a><span class="lineno"> 735</span>  <span class="keywordflow">if</span> (rx.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> == ry.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>) {</div><div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="comment">// x = rx.coeff * rep + rx.offset;</span></div><div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="comment">// y = ry.coeff * rep + ry.offset_y;</span></div><div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="comment">// And x == coeff * ry.coeff * rep + (coeff * ry.offset + offset).</span></div><div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="comment">//</span></div><div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="comment">// So we get the relation a * rep == b with a and b defined here:</span></div><div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <span class="keyword">const</span> int64_t <a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a> = coeff * ry.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> - rx.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>;</div><div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="keyword">const</span> int64_t <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a> = coeff * ry.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a> + offset - rx.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>;</div><div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <span class="keywordflow">if</span> (<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a> == 0) {</div><div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="keywordflow">if</span> (<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a> != 0) is_unsat_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  }</div><div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <span class="keywordflow">if</span> (<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a> % <a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a> != 0) {</div><div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  is_unsat_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  }</div><div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"affine: unique solution"</span>);</div><div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  <span class="keyword">const</span> int64_t unique_value = -<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a> / <a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>;</div><div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(rx.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(unique_value))) {</div><div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  }</div><div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(ref_x,</div><div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(unique_value * rx.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> + rx.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>))) {</div><div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  }</div><div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(ref_y,</div><div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(unique_value * ry.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> + ry.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>))) {</div><div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  }</div><div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  }</div><div class="line"><a name="l00766"></a><span class="lineno"> 766</span> </div><div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> x = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref_x);</div><div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> y = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref_y);</div><div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keyword">const</span> int64_t c =</div><div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref_x) == <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref_y) ? coeff : -coeff;</div><div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="keyword">const</span> int64_t o = <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref_x) ? offset : -offset;</div><div class="line"><a name="l00772"></a><span class="lineno"> 772</span> </div><div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="comment">// TODO(user): can we force the rep and remove GetAffineRelation()?</span></div><div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <span class="keywordtype">bool</span> added = AddRelation(x, y, c, o, &affine_relations_);</div><div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="keywordflow">if</span> ((c == 1 || c == -1) && o == 0) {</div><div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  added |= AddRelation(x, y, c, o, &var_equiv_relations_);</div><div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  }</div><div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <span class="keywordflow">if</span> (added) {</div><div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"affine: new relation"</span>);</div><div class="line"><a name="l00780"></a><span class="lineno"> 780</span> </div><div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  <span class="comment">// Lets propagate again the new relation. We might as well do it as early</span></div><div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <span class="comment">// as possible and not all call site do it.</span></div><div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5c2f01871b9baa2bc0dc556803c5a1ad">PropagateAffineRelation</a>(ref_x)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5c2f01871b9baa2bc0dc556803c5a1ad">PropagateAffineRelation</a>(ref_y)) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00785"></a><span class="lineno"> 785</span> </div><div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  <span class="comment">// These maps should only contains representative, so only need to remap</span></div><div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  <span class="comment">// either x or y.</span></div><div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> rep = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(x).<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>;</div><div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordflow">if</span> (x != rep) encoding_remap_queue_.push_back(x);</div><div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  <span class="keywordflow">if</span> (y != rep) encoding_remap_queue_.push_back(y);</div><div class="line"><a name="l00791"></a><span class="lineno"> 791</span> </div><div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="comment">// The domain didn't change, but this notification allows to re-process any</span></div><div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  <span class="comment">// constraint containing these variables. Note that we do not need to</span></div><div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="comment">// retrigger a propagation of the constraint containing a variable whose</span></div><div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  <span class="comment">// representative didn't change.</span></div><div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="keywordflow">if</span> (x != rep) <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a02302d3a45d02003dcbf288d045ebd86">modified_domains</a>.<a class="code" href="classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7">Set</a>(x);</div><div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  <span class="keywordflow">if</span> (y != rep) <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a02302d3a45d02003dcbf288d045ebd86">modified_domains</a>.<a class="code" href="classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7">Set</a>(y);</div><div class="line"><a name="l00798"></a><span class="lineno"> 798</span> </div><div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  var_to_constraints_[x].insert(<a class="code" href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">kAffineRelationConstraint</a>);</div><div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  var_to_constraints_[y].insert(<a class="code" href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">kAffineRelationConstraint</a>);</div><div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  }</div><div class="line"><a name="l00803"></a><span class="lineno"> 803</span> </div><div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"affine: incompatible relation"</span>);</div><div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <span class="keywordflow">if</span> (<a class="code" href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a>(1)) {</div><div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Cannot add relation "</span> << <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref_x) << <span class="stringliteral">" = "</span> << coeff</div><div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  << <span class="stringliteral">" * "</span> << <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref_y) << <span class="stringliteral">" + "</span> << offset</div><div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  << <span class="stringliteral">" because of incompatibilities with existing relation: "</span>;</div><div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : {ref_x, ref_y}) {</div><div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  <span class="keyword">const</span> <span class="keyword">auto</span> r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(ref);</div><div class="line"><a name="l00811"></a><span class="lineno"> 811</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref) << <span class="stringliteral">" = "</span> << r.coeff << <span class="stringliteral">" * "</span></div><div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  << <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(r.representative) << <span class="stringliteral">" + "</span> << r.offset;</div><div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  }</div><div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  }</div><div class="line"><a name="l00815"></a><span class="lineno"> 815</span> </div><div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00817"></a><span class="lineno"> 817</span> }</div><div class="line"><a name="l00818"></a><span class="lineno"> 818</span> </div><div class="line"><a name="l00819"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a8fc1d49d1e1bf7261f15ccc6c23c4b10"> 819</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a8fc1d49d1e1bf7261f15ccc6c23c4b10">PresolveContext::StoreBooleanEqualityRelation</a>(<span class="keywordtype">int</span> ref_a, <span class="keywordtype">int</span> ref_b) {</div><div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span>;</div><div class="line"><a name="l00821"></a><span class="lineno"> 821</span> </div><div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(ref_a));</div><div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(ref_b));</div><div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref_a).IsEmpty());</div><div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref_b).IsEmpty());</div><div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">CanBeUsedAsLiteral</a>(ref_a));</div><div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">CanBeUsedAsLiteral</a>(ref_b));</div><div class="line"><a name="l00828"></a><span class="lineno"> 828</span> </div><div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  <span class="keywordflow">if</span> (ref_a == ref_b) <span class="keywordflow">return</span>;</div><div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  <span class="keywordflow">if</span> (ref_a == <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(ref_b)) {</div><div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  is_unsat_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  }</div><div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> var_a = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref_a);</div><div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> var_b = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref_b);</div><div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref_a) == <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref_b)) {</div><div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <span class="comment">// a = b</span></div><div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a3999a4ff1f53b54b40c8cd396105572a">StoreAffineRelation</a>(var_a, var_b, <span class="comment">/*coeff=*/</span>1, <span class="comment">/*offset=*/</span>0));</div><div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  <span class="comment">// a = 1 - b</span></div><div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a3999a4ff1f53b54b40c8cd396105572a">StoreAffineRelation</a>(var_a, var_b, <span class="comment">/*coeff=*/</span>-1, <span class="comment">/*offset=*/</span>1));</div><div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  }</div><div class="line"><a name="l00843"></a><span class="lineno"> 843</span> }</div><div class="line"><a name="l00844"></a><span class="lineno"> 844</span> </div><div class="line"><a name="l00845"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a06f0856b91c0399720273b5da85ce280"> 845</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a06f0856b91c0399720273b5da85ce280">PresolveContext::StoreAbsRelation</a>(<span class="keywordtype">int</span> target_ref, <span class="keywordtype">int</span> ref) {</div><div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  <span class="keyword">const</span> <span class="keyword">auto</span> insert_status = abs_relations_.insert(</div><div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  std::make_pair(target_ref, <a class="code" href="classoperations__research_1_1sat_1_1_saved_variable.html">SavedVariable</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref))));</div><div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  <span class="keywordflow">if</span> (!insert_status.second) {</div><div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="comment">// Tricky: overwrite if the old value refer to a now unused variable.</span></div><div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> candidate = insert_status.first->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="keywordflow">if</span> (removed_variables_.contains(candidate)) {</div><div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  insert_status.first->second = <a class="code" href="classoperations__research_1_1sat_1_1_saved_variable.html">SavedVariable</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref));</div><div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  }</div><div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  }</div><div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00858"></a><span class="lineno"> 858</span> }</div><div class="line"><a name="l00859"></a><span class="lineno"> 859</span> </div><div class="line"><a name="l00860"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#af97bdc26758ff0f27314cafb7c2d7044"> 860</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af97bdc26758ff0f27314cafb7c2d7044">PresolveContext::GetAbsRelation</a>(<span class="keywordtype">int</span> target_ref, <span class="keywordtype">int</span>* ref) {</div><div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  <span class="keyword">auto</span> it = abs_relations_.find(target_ref);</div><div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="keywordflow">if</span> (it == abs_relations_.end()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00863"></a><span class="lineno"> 863</span> </div><div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="comment">// Tricky: In some rare case the stored relation can refer to a deleted</span></div><div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  <span class="comment">// variable, so we need to ignore it.</span></div><div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="comment">//</span></div><div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  <span class="comment">// TODO(user): Incorporate this as part of SavedVariable/SavedLiteral so we</span></div><div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  <span class="comment">// make sure we never forget about this.</span></div><div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> candidate = it->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  <span class="keywordflow">if</span> (removed_variables_.contains(candidate)) {</div><div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  abs_relations_.erase(it);</div><div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  }</div><div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  *ref = candidate;</div><div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(*ref));</div><div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00877"></a><span class="lineno"> 877</span> }</div><div class="line"><a name="l00878"></a><span class="lineno"> 878</span> </div><div class="line"><a name="l00879"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f"> 879</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">PresolveContext::GetLiteralRepresentative</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref));</div><div class="line"><a name="l00881"></a><span class="lineno"> 881</span> </div><div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">CanBeUsedAsLiteral</a>(ref));</div><div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">CanBeUsedAsLiteral</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>)) {</div><div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  <span class="comment">// Note(user): This can happen is some corner cases where the affine</span></div><div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <span class="comment">// relation where added before the variable became usable as Boolean. When</span></div><div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="comment">// this is the case, the domain will be of the form [x, x + 1] and should be</span></div><div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  <span class="comment">// later remapped to a Boolean variable.</span></div><div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  <span class="keywordflow">return</span> ref;</div><div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  }</div><div class="line"><a name="l00890"></a><span class="lineno"> 890</span> </div><div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <span class="comment">// We made sure that the affine representative can always be used as a</span></div><div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="comment">// literal. However, if some variable are fixed, we might not have only</span></div><div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="comment">// (coeff=1 offset=0) or (coeff=-1 offset=1) and we might have something like</span></div><div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">// (coeff=8 offset=0) which is only valid for both variable at zero...</span></div><div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="comment">//</span></div><div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <span class="comment">// What is sure is that depending on the value, only one mapping can be valid</span></div><div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  <span class="comment">// because r.coeff can never be zero.</span></div><div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> positive_possible = (r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a> == 0 || r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> + r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a> == 1);</div><div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> negative_possible = (r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a> == 1 || r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> + r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a> == 0);</div><div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  <a class="code" href="base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0">DCHECK_NE</a>(positive_possible, negative_possible);</div><div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) {</div><div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <span class="keywordflow">return</span> positive_possible ? r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> : <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>);</div><div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  <span class="keywordflow">return</span> positive_possible ? <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>) : r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>;</div><div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  }</div><div class="line"><a name="l00906"></a><span class="lineno"> 906</span> }</div><div class="line"><a name="l00907"></a><span class="lineno"> 907</span> </div><div class="line"><a name="l00908"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a6387e91b098c081f059892e1346a29ed"> 908</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a6387e91b098c081f059892e1346a29ed">PresolveContext::GetVariableRepresentative</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = var_equiv_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">Get</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref));</div><div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(std::abs(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>), 1);</div><div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>, 0);</div><div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref) == (r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> == 1) ? r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a></div><div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  : <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>);</div><div class="line"><a name="l00914"></a><span class="lineno"> 914</span> }</div><div class="line"><a name="l00915"></a><span class="lineno"> 915</span> </div><div class="line"><a name="l00916"></a><span class="lineno"> 916</span> <span class="comment">// This makes sure that the affine relation only uses one of the</span></div><div class="line"><a name="l00917"></a><span class="lineno"> 917</span> <span class="comment">// representative from the var_equiv_relations_.</span></div><div class="line"><a name="l00918"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814"> 918</a></span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">PresolveContext::GetAffineRelation</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = affine_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">Get</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref));</div><div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> o = var_equiv_relations_.<a class="code" href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">Get</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>);</div><div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> = o.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>;</div><div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="keywordflow">if</span> (o.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> == -1) r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> = -r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>;</div><div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <span class="keywordflow">if</span> (!<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) {</div><div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> *= -1;</div><div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a> *= -1;</div><div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  }</div><div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  <span class="keywordflow">return</span> r;</div><div class="line"><a name="l00928"></a><span class="lineno"> 928</span> }</div><div class="line"><a name="l00929"></a><span class="lineno"> 929</span> </div><div class="line"><a name="l00930"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad5e9882b154b8a7e8619b29c5631386e"> 930</a></span> std::string <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad5e9882b154b8a7e8619b29c5631386e">PresolveContext::RefDebugString</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  <span class="keywordflow">return</span> absl::StrCat(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref) ? <span class="stringliteral">"X"</span> : <span class="stringliteral">"-X"</span>, <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref),</div><div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(ref).<a class="code" href="namespaceoperations__research.html#a23fc0ff92a3f47fe0bd2ad3eac3c9b57">ToString</a>());</div><div class="line"><a name="l00933"></a><span class="lineno"> 933</span> }</div><div class="line"><a name="l00934"></a><span class="lineno"> 934</span> </div><div class="line"><a name="l00935"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a66810fcd97b5e9c5fd745226607cd7aa"> 935</a></span> std::string <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a66810fcd97b5e9c5fd745226607cd7aa">PresolveContext::AffineRelationDebugString</a>(<span class="keywordtype">int</span> ref)<span class="keyword"> const </span>{</div><div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(ref);</div><div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <span class="keywordflow">return</span> absl::StrCat(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad5e9882b154b8a7e8619b29c5631386e">RefDebugString</a>(ref), <span class="stringliteral">" = "</span>, r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>, <span class="stringliteral">" * "</span>,</div><div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ad5e9882b154b8a7e8619b29c5631386e">RefDebugString</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>), <span class="stringliteral">" + "</span>, r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>);</div><div class="line"><a name="l00939"></a><span class="lineno"> 939</span> }</div><div class="line"><a name="l00940"></a><span class="lineno"> 940</span> </div><div class="line"><a name="l00941"></a><span class="lineno"> 941</span> <span class="comment">// Create the internal structure for any new variables in working_model.</span></div><div class="line"><a name="l00942"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a62cd771660767621e917b2c256182c4e"> 942</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a62cd771660767621e917b2c256182c4e">PresolveContext::InitializeNewDomains</a>() {</div><div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = domains.size(); i < <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#abef5f55c3278c137faca92b8e433f8ea">variables_size</a>(); ++i) {</div><div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  domains.emplace_back(<a class="code" href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">ReadDomainFromProto</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#a6a4544ca20489d70e302f5d6d374a012">variables</a>(i)));</div><div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  <span class="keywordflow">if</span> (domains.back().IsEmpty()) {</div><div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  is_unsat_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  }</div><div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(i)) <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af4847724208dd09ba3fea8b53132d197">ExploitFixedDomain</a>(i);</div><div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  }</div><div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a02302d3a45d02003dcbf288d045ebd86">modified_domains</a>.<a class="code" href="classoperations__research_1_1_sparse_bitset.html#abf34ab06e7250e92954c2b5a263e5612">Resize</a>(domains.size());</div><div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  var_to_constraints_.resize(domains.size());</div><div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  var_to_num_linear1_.resize(domains.size());</div><div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a47714f887512a3d7acebfcb4a348291a">var_to_ub_only_constraints</a>.resize(domains.size());</div><div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a23aa815e8a7a860998c4d35760fa087e">var_to_lb_only_constraints</a>.resize(domains.size());</div><div class="line"><a name="l00956"></a><span class="lineno"> 956</span> }</div><div class="line"><a name="l00957"></a><span class="lineno"> 957</span> </div><div class="line"><a name="l00958"></a><span class="lineno"> 958</span> <span class="keywordtype">bool</span> PresolveContext::RemapEncodingMaps() {</div><div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <span class="comment">// TODO(user): for now, while the code works most of the time, it triggers</span></div><div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  <span class="comment">// weird side effect that causes some issues in some LNS presolve...</span></div><div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  <span class="comment">// We should continue the investigation before activating it.</span></div><div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  <span class="comment">//</span></div><div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="comment">// Note also that because all our encoding constraints are present in the</span></div><div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <span class="comment">// model, they will be remapped, and the new mapping re-added again. So while</span></div><div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <span class="comment">// the current code might not be efficient, it should eventually reach the</span></div><div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <span class="comment">// same effect.</span></div><div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  encoding_remap_queue_.clear();</div><div class="line"><a name="l00968"></a><span class="lineno"> 968</span> </div><div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  <span class="comment">// Note that InsertVarValueEncodingInternal() will potentially add new entry</span></div><div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <span class="comment">// to the encoding_ map, but for a different variables. So this code relies on</span></div><div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <span class="comment">// the fact that the var_map shouldn't change content nor address of the</span></div><div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  <span class="comment">// "var_map" below while we iterate on them.</span></div><div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : encoding_remap_queue_) {</div><div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  <span class="keywordflow">if</span> (r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  <span class="keywordtype">int</span> num_remapping = 0;</div><div class="line"><a name="l00978"></a><span class="lineno"> 978</span> </div><div class="line"><a name="l00979"></a><span class="lineno"> 979</span>  <span class="comment">// Encoding.</span></div><div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  {</div><div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <span class="keyword">const</span> absl::flat_hash_map<int64_t, SavedLiteral>& var_map =</div><div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : var_map) {</div><div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> lit = entry.second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <span class="keywordflow">if</span> (removed_variables_.contains(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(lit))) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  <span class="keywordflow">if</span> ((entry.first - r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>) % r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> != 0) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  <span class="keyword">const</span> int64_t rep_value = (entry.first - r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>) / r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>;</div><div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  ++num_remapping;</div><div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  InsertVarValueEncodingInternal(lit, r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>, rep_value,</div><div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  <span class="comment">/*add_constraints=*/</span><span class="keyword">false</span>);</div><div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  }</div><div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  encoding_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  }</div><div class="line"><a name="l00995"></a><span class="lineno"> 995</span> </div><div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  <span class="comment">// Eq half encoding.</span></div><div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  {</div><div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  <span class="keyword">const</span> absl::flat_hash_map<int64_t, absl::flat_hash_set<int>>& var_map =</div><div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  eq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : var_map) {</div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  <span class="keywordflow">if</span> ((entry.first - r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>) % r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> != 0) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  <span class="keyword">const</span> int64_t rep_value = (entry.first - r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>) / r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>;</div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  for (<span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : entry.second) {</div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  ++num_remapping;</div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  InsertHalfVarValueEncoding(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>),</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>, rep_value,</div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  <span class="comment">/*imply_eq=*/</span><span class="keyword">true</span>);</div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  }</div><div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  }</div><div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  eq_half_encoding_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  }</div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span> </div><div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  <span class="comment">// Neq half encoding.</span></div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  {</div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <span class="keyword">const</span> absl::flat_hash_map<int64_t, absl::flat_hash_set<int>>& var_map =</div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  neq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : var_map) {</div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <span class="keywordflow">if</span> ((entry.first - r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>) % r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a> != 0) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  <span class="keyword">const</span> int64_t rep_value = (entry.first - r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>) / r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>;</div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  for (<span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : entry.second) {</div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  ++num_remapping;</div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  InsertHalfVarValueEncoding(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>),</div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>, rep_value,</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  <span class="comment">/*imply_eq=*/</span><span class="keyword">false</span>);</div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  }</div><div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  }</div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  neq_half_encoding_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  }</div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span> </div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <span class="keywordflow">if</span> (num_remapping > 0) {</div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Remapped "</span> << num_remapping << <span class="stringliteral">" encodings due to "</span> << <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a></div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  << <span class="stringliteral">" -> "</span> << r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> << <span class="stringliteral">"."</span>;</div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  }</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  }</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  encoding_remap_queue_.clear();</div><div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  <span class="keywordflow">return</span> !is_unsat_;</div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span> }</div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span> </div><div class="line"><a name="l01041"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a7ea7bb314db4dbe4f3b2cac16a2af20f"> 1041</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a7ea7bb314db4dbe4f3b2cac16a2af20f">PresolveContext::CanonicalizeDomainOfSizeTwo</a>(<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).Size(), 2);</div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  <span class="keyword">const</span> int64_t var_min = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="keyword">const</span> int64_t var_max = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span> </div><div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span> </div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  absl::flat_hash_map<int64_t, SavedLiteral>& var_map = encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span> </div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="comment">// Find encoding for min if present.</span></div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  <span class="keyword">auto</span> min_it = var_map.find(var_min);</div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  <span class="keywordflow">if</span> (min_it != var_map.end()) {</div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> old_var = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(min_it->second.Get(<span class="keyword">this</span>));</div><div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  <span class="keywordflow">if</span> (removed_variables_.contains(old_var)) {</div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  var_map.erase(min_it);</div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  min_it = var_map.end();</div><div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  }</div><div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  }</div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span> </div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <span class="comment">// Find encoding for max if present.</span></div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  <span class="keyword">auto</span> max_it = var_map.find(var_max);</div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  <span class="keywordflow">if</span> (max_it != var_map.end()) {</div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> old_var = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(max_it->second.Get(<span class="keyword">this</span>));</div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  <span class="keywordflow">if</span> (removed_variables_.contains(old_var)) {</div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  var_map.erase(max_it);</div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  max_it = var_map.end();</div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  }</div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  }</div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span> </div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  <span class="comment">// Insert missing encoding.</span></div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keywordtype">int</span> min_literal;</div><div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  <span class="keywordtype">int</span> max_literal;</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <span class="keywordflow">if</span> (min_it != var_map.end() && max_it != var_map.end()) {</div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  min_literal = min_it->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  max_literal = max_it->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <span class="keywordflow">if</span> (min_literal != <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(max_literal)) {</div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables with 2 values: merge encoding literals"</span>);</div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a8fc1d49d1e1bf7261f15ccc6c23c4b10">StoreBooleanEqualityRelation</a>(min_literal, <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(max_literal));</div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  }</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  min_literal = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(min_literal);</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  max_literal = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(max_literal);</div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(min_literal)) <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(min_literal, <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(max_literal));</div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (min_it != var_map.end() && max_it == var_map.end()) {</div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables with 2 values: register other encoding"</span>);</div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  min_literal = min_it->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  max_literal = <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(min_literal);</div><div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  var_map[var_max] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(max_literal);</div><div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (min_it == var_map.end() && max_it != var_map.end()) {</div><div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables with 2 values: register other encoding"</span>);</div><div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  max_literal = max_it->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  min_literal = <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(max_literal);</div><div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  var_map[var_min] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(min_literal);</div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables with 2 values: create encoding literal"</span>);</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  max_literal = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0967c575f9db0c79ed2e7930a0d6a091">NewBoolVar</a>();</div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  min_literal = <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(max_literal);</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  var_map[var_min] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(min_literal);</div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  var_map[var_max] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(max_literal);</div><div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  }</div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span> </div><div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(min_literal) || <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(max_literal)) {</div><div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(min_literal));</div><div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(max_literal));</div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables with 2 values: fixed encoding"</span>);</div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">LiteralIsTrue</a>(min_literal)) {</div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  <span class="keywordflow">return</span> static_cast<void>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(var_min)));</div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  <span class="keywordflow">return</span> static_cast<void>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(var_max)));</div><div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  }</div><div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  }</div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span> </div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  <span class="comment">// Add affine relation.</span></div><div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).<a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a> != <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(min_literal)) {</div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables with 2 values: new affine relation"</span>);</div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(max_literal)) {</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a3999a4ff1f53b54b40c8cd396105572a">StoreAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(max_literal),</div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  var_max - var_min, var_min));</div><div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a3999a4ff1f53b54b40c8cd396105572a">StoreAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(max_literal),</div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  var_min - var_max, var_max));</div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  }</div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  }</div><div class="line"><a name="l01125"></a><span class="lineno"> 1125</span> }</div><div class="line"><a name="l01126"></a><span class="lineno"> 1126</span> </div><div class="line"><a name="l01127"></a><span class="lineno"> 1127</span> <span class="keywordtype">void</span> PresolveContext::InsertVarValueEncodingInternal(<span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>,</div><div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>,</div><div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  <span class="keywordtype">bool</span> add_constraints) {</div><div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>));</div><div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>  absl::flat_hash_map<int64_t, SavedLiteral>& var_map = encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l01133"></a><span class="lineno"> 1133</span> </div><div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>  <span class="comment">// Ticky and rare: I have only observed this on the LNS of</span></div><div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <span class="comment">// radiation_m18_12_05_sat.fzn. The value was encoded, but maybe we never</span></div><div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  <span class="comment">// used the involved variables / constraints, so it was removed (with the</span></div><div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  <span class="comment">// encoding constraints) from the model already! We have to be careful.</span></div><div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  <span class="keyword">const</span> <span class="keyword">auto</span> it = var_map.find(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  <span class="keywordflow">if</span> (it != var_map.end()) {</div><div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> old_var = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(it->second.Get(<span class="keyword">this</span>));</div><div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  <span class="keywordflow">if</span> (removed_variables_.contains(old_var)) {</div><div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  var_map.erase(it);</div><div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  }</div><div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  }</div><div class="line"><a name="l01145"></a><span class="lineno"> 1145</span> </div><div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  <span class="keyword">const</span> <span class="keyword">auto</span> insert =</div><div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  var_map.insert(std::make_pair(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, SavedLiteral(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)));</div><div class="line"><a name="l01148"></a><span class="lineno"> 1148</span> </div><div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  <span class="comment">// If an encoding already exist, make the two Boolean equals.</span></div><div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  <span class="keywordflow">if</span> (!insert.second) {</div><div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> previous_literal = insert.first->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(previous_literal));</div><div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  <span class="keywordflow">if</span> (<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> != previous_literal) {</div><div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(</div><div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  <span class="stringliteral">"variables: merge equivalent var value encoding literals"</span>);</div><div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a8fc1d49d1e1bf7261f15ccc6c23c4b10">StoreBooleanEqualityRelation</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, previous_literal);</div><div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  }</div><div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  }</div><div class="line"><a name="l01160"></a><span class="lineno"> 1160</span> </div><div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).Size() == 2) {</div><div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a7ea7bb314db4dbe4f3b2cac16a2af20f">CanonicalizeDomainOfSizeTwo</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Insert lit("</span> << <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> << <span class="stringliteral">") <=> var("</span> << <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a></div><div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  << <span class="stringliteral">") == "</span> << <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div><div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  eq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>][<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>].insert(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  neq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>][<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>].insert(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>));</div><div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  <span class="keywordflow">if</span> (add_constraints) {</div><div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables: add encoding constraint"</span>);</div><div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af0280b2bda95804c4166638e7b490ce9">AddImplyInDomain</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, Domain(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>));</div><div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af0280b2bda95804c4166638e7b490ce9">AddImplyInDomain</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>), <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, Domain(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>).Complement());</div><div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  }</div><div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  }</div><div class="line"><a name="l01174"></a><span class="lineno"> 1174</span> }</div><div class="line"><a name="l01175"></a><span class="lineno"> 1175</span> </div><div class="line"><a name="l01176"></a><span class="lineno"> 1176</span> <span class="keywordtype">bool</span> PresolveContext::InsertHalfVarValueEncoding(<span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>,</div><div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, <span class="keywordtype">bool</span> imply_eq) {</div><div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  <span class="keywordflow">if</span> (is_unsat_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>));</div><div class="line"><a name="l01180"></a><span class="lineno"> 1180</span> </div><div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  <span class="comment">// Creates the linking sets on demand.</span></div><div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <span class="comment">// Insert the enforcement literal in the half encoding map.</span></div><div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  <span class="keyword">auto</span>& direct_set =</div><div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  imply_eq ? eq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>][<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>] : neq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>][<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>];</div><div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <span class="keywordflow">if</span> (!direct_set.insert(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>).second) <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// Already there.</span></div><div class="line"><a name="l01186"></a><span class="lineno"> 1186</span> </div><div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Collect lit("</span> << <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> << <span class="stringliteral">") implies var("</span> << <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a></div><div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  << (imply_eq ? <span class="stringliteral">") == "</span> : <span class="stringliteral">") != "</span>) << <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div><div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables: detect half reified value encoding"</span>);</div><div class="line"><a name="l01190"></a><span class="lineno"> 1190</span> </div><div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  <span class="comment">// Note(user): We don't expect a lot of literals in these sets, so doing</span></div><div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  <span class="comment">// a scan should be okay.</span></div><div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  <span class="keyword">auto</span>& other_set =</div><div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  imply_eq ? neq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>][<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>] : eq_half_encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>][<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>];</div><div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> other : other_set) {</div><div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(other) != <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01197"></a><span class="lineno"> 1197</span> </div><div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"variables: detect fully reified value encoding"</span>);</div><div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> imply_eq_literal = imply_eq ? <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> : <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  InsertVarValueEncodingInternal(imply_eq_literal, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>,</div><div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  <span class="comment">/*add_constraints=*/</span><span class="keyword">false</span>);</div><div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  }</div><div class="line"><a name="l01204"></a><span class="lineno"> 1204</span> </div><div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l01206"></a><span class="lineno"> 1206</span> }</div><div class="line"><a name="l01207"></a><span class="lineno"> 1207</span> </div><div class="line"><a name="l01208"></a><span class="lineno"> 1208</span> <span class="keywordtype">bool</span> PresolveContext::CanonicalizeEncoding(<span class="keywordtype">int</span>* ref, int64_t* <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  <span class="keyword">const</span> AffineRelation::Relation r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(*ref);</div><div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <span class="keywordflow">if</span> ((*<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> - r.offset) % r.coeff != 0) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  *ref = r.representative;</div><div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  *<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = (*<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> - r.offset) / r.coeff;</div><div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l01214"></a><span class="lineno"> 1214</span> }</div><div class="line"><a name="l01215"></a><span class="lineno"> 1215</span> </div><div class="line"><a name="l01216"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1abf1e971476b61662a7ab2c5d88966c"> 1216</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1abf1e971476b61662a7ab2c5d88966c">PresolveContext::InsertVarValueEncoding</a>(<span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <span class="keywordtype">int</span> ref,</div><div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  <span class="keywordflow">if</span> (!RemapEncodingMaps()) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  <span class="keywordflow">if</span> (!CanonicalizeEncoding(&ref, &<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  InsertVarValueEncodingInternal(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, ref, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, <span class="comment">/*add_constraints=*/</span><span class="keyword">true</span>);</div><div class="line"><a name="l01222"></a><span class="lineno"> 1222</span> }</div><div class="line"><a name="l01223"></a><span class="lineno"> 1223</span> </div><div class="line"><a name="l01224"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#afdf0f5e877efe4e1d003300f0ce1234f"> 1224</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#afdf0f5e877efe4e1d003300f0ce1234f">PresolveContext::StoreLiteralImpliesVarEqValue</a>(<span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>,</div><div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  <span class="keywordflow">if</span> (!RemapEncodingMaps()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="keywordflow">if</span> (!CanonicalizeEncoding(&<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, &<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="keywordflow">return</span> InsertHalfVarValueEncoding(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, <span class="comment">/*imply_eq=*/</span><span class="keyword">true</span>);</div><div class="line"><a name="l01230"></a><span class="lineno"> 1230</span> }</div><div class="line"><a name="l01231"></a><span class="lineno"> 1231</span> </div><div class="line"><a name="l01232"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2877bce637c80df492977b5b6487d563"> 1232</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2877bce637c80df492977b5b6487d563">PresolveContext::StoreLiteralImpliesVarNEqValue</a>(<span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>,</div><div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  <span class="keywordflow">if</span> (!RemapEncodingMaps()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <span class="keywordflow">if</span> (!CanonicalizeEncoding(&<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, &<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  <span class="keywordflow">return</span> InsertHalfVarValueEncoding(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, <span class="comment">/*imply_eq=*/</span><span class="keyword">false</span>);</div><div class="line"><a name="l01238"></a><span class="lineno"> 1238</span> }</div><div class="line"><a name="l01239"></a><span class="lineno"> 1239</span> </div><div class="line"><a name="l01240"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9925335988ccbe70e9150a9ce71b9952"> 1240</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9925335988ccbe70e9150a9ce71b9952">PresolveContext::HasVarValueEncoding</a>(<span class="keywordtype">int</span> ref, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>,</div><div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  <span class="keywordtype">int</span>* <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>) {</div><div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(ref));</div><div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  <span class="keywordflow">if</span> (!RemapEncodingMaps()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  <span class="keywordflow">if</span> (!CanonicalizeEncoding(&ref, &<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  <span class="keyword">const</span> absl::flat_hash_map<int64_t, SavedLiteral>& var_map = encoding_[ref];</div><div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  <span class="keyword">const</span> <span class="keyword">auto</span> it = var_map.find(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  <span class="keywordflow">if</span> (it != var_map.end()) {</div><div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  <span class="keywordflow">if</span> (<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>  *<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = it->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  }</div><div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  }</div><div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01254"></a><span class="lineno"> 1254</span> }</div><div class="line"><a name="l01255"></a><span class="lineno"> 1255</span> </div><div class="line"><a name="l01256"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a4f9423ff72ed20e477fff16e8887df96"> 1256</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a4f9423ff72ed20e477fff16e8887df96">PresolveContext::GetOrCreateVarValueEncoding</a>(<span class="keywordtype">int</span> ref, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  <span class="comment">// TODO(user): Remove this precondition. For now it is needed because</span></div><div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  <span class="comment">// we might remove encoding literal without updating the encoding map.</span></div><div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  <span class="comment">// This is related to RemapEncodingMaps() which is currently disabled.</span></div><div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a13c8d5cf71bf7735663c489f5493d036">ModelIsExpanded</a>());</div><div class="line"><a name="l01261"></a><span class="lineno"> 1261</span> </div><div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">VariableWasRemoved</a>(ref));</div><div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>  <span class="keywordflow">if</span> (!RemapEncodingMaps()) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ada5d036ab04018d9ee3ed60888843102">GetOrCreateConstantVar</a>(0);</div><div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  <span class="keywordflow">if</span> (!CanonicalizeEncoding(&ref, &<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ada5d036ab04018d9ee3ed60888843102">GetOrCreateConstantVar</a>(0);</div><div class="line"><a name="l01265"></a><span class="lineno"> 1265</span> </div><div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  <span class="comment">// Positive after CanonicalizeEncoding().</span></div><div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = ref;</div><div class="line"><a name="l01268"></a><span class="lineno"> 1268</span> </div><div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  <span class="comment">// Returns the false literal if the value is not in the domain.</span></div><div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  <span class="keywordflow">if</span> (!domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].Contains(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) {</div><div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ada5d036ab04018d9ee3ed60888843102">GetOrCreateConstantVar</a>(0);</div><div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  }</div><div class="line"><a name="l01273"></a><span class="lineno"> 1273</span> </div><div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  <span class="comment">// Returns the associated literal if already present.</span></div><div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  absl::flat_hash_map<int64_t, SavedLiteral>& var_map = encoding_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  <span class="keyword">auto</span> it = var_map.find(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  <span class="keywordflow">if</span> (it != var_map.end()) {</div><div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  <span class="keywordflow">return</span> it->second.Get(<span class="keyword">this</span>);</div><div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  }</div><div class="line"><a name="l01280"></a><span class="lineno"> 1280</span> </div><div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  <span class="comment">// Special case for fixed domains.</span></div><div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  <span class="keywordflow">if</span> (domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].Size() == 1) {</div><div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> true_literal = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ada5d036ab04018d9ee3ed60888843102">GetOrCreateConstantVar</a>(1);</div><div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  var_map[<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(true_literal);</div><div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  <span class="keywordflow">return</span> true_literal;</div><div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  }</div><div class="line"><a name="l01287"></a><span class="lineno"> 1287</span> </div><div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  <span class="comment">// Special case for domains of size 2.</span></div><div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  <span class="keyword">const</span> int64_t var_min = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  <span class="keyword">const</span> int64_t var_max = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  <span class="keywordflow">if</span> (domains[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].Size() == 2) {</div><div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>  <span class="comment">// Checks if the other value is already encoded.</span></div><div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  <span class="keyword">const</span> int64_t other_value = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> == var_min ? var_max : var_min;</div><div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>  <span class="keyword">auto</span> other_it = var_map.find(other_value);</div><div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  <span class="keywordflow">if</span> (other_it != var_map.end()) {</div><div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>  <span class="comment">// Update the encoding map. The domain could have been reduced to size</span></div><div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>  <span class="comment">// two after the creation of the first literal.</span></div><div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(other_it->second.Get(<span class="keyword">this</span>));</div><div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  var_map[<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  <span class="keywordflow">return</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>;</div><div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>  }</div><div class="line"><a name="l01302"></a><span class="lineno"> 1302</span> </div><div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  <span class="keywordflow">if</span> (var_min == 0 && var_max == 1) {</div><div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  var_map[1] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(<a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a>);</div><div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  var_map[0] = <a class="code" href="classoperations__research_1_1sat_1_1_saved_literal.html">SavedLiteral</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a>));</div><div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  <span class="keywordflow">return</span> <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> == 1 ? <a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a> : <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a>);</div><div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0967c575f9db0c79ed2e7930a0d6a091">NewBoolVar</a>();</div><div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1abf1e971476b61662a7ab2c5d88966c">InsertVarValueEncoding</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, var_max);</div><div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>  <span class="keywordflow">return</span> <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> == var_max ? <a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a> : <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a>);</div><div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>  }</div><div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>  }</div><div class="line"><a name="l01315"></a><span class="lineno"> 1315</span> </div><div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0967c575f9db0c79ed2e7930a0d6a091">NewBoolVar</a>();</div><div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1abf1e971476b61662a7ab2c5d88966c">InsertVarValueEncoding</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">GetLiteralRepresentative</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div><div class="line"><a name="l01319"></a><span class="lineno"> 1319</span> }</div><div class="line"><a name="l01320"></a><span class="lineno"> 1320</span> </div><div class="line"><a name="l01321"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aed2a07aad05b4ad8e05cf5fe7b239a1a"> 1321</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aed2a07aad05b4ad8e05cf5fe7b239a1a">PresolveContext::ReadObjectiveFromProto</a>() {</div><div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html">CpObjectiveProto</a>& obj = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#a2787b866382b560920d55ce5cf129920">objective</a>();</div><div class="line"><a name="l01323"></a><span class="lineno"> 1323</span> </div><div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  objective_offset_ = obj.<a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a96ffc785b7b2135c7980c985883ffdd3">offset</a>();</div><div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  objective_scaling_factor_ = obj.<a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a9e32504c3f1bddb0f25f1386ecf7987b">scaling_factor</a>();</div><div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  <span class="keywordflow">if</span> (objective_scaling_factor_ == 0.0) {</div><div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  objective_scaling_factor_ = 1.0;</div><div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  }</div><div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  <span class="keywordflow">if</span> (!obj.<a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#aa9cb4e4ba977c364365487c63ed32446">domain</a>().empty()) {</div><div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  <span class="comment">// We might relax this in CanonicalizeObjective() when we will compute</span></div><div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  <span class="comment">// the possible objective domain from the domains of the variables.</span></div><div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  objective_domain_is_constraining_ = <span class="keyword">true</span>;</div><div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  objective_domain_ = <a class="code" href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">ReadDomainFromProto</a>(obj);</div><div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  objective_domain_is_constraining_ = <span class="keyword">false</span>;</div><div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  objective_domain_ = <a class="code" href="classoperations__research_1_1_domain.html#a03a595b90f43d02186eb660424c6ca1b">Domain::AllValues</a>();</div><div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  }</div><div class="line"><a name="l01338"></a><span class="lineno"> 1338</span> </div><div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>  <span class="comment">// This is an upper bound of the higher magnitude that can be reach by</span></div><div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>  <span class="comment">// summing an objective partial sum. Because of the model validation, this</span></div><div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  <span class="comment">// shouldn't overflow, and we make sure it stays this way.</span></div><div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  objective_overflow_detection_ = 0;</div><div class="line"><a name="l01343"></a><span class="lineno"> 1343</span> </div><div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  objective_map_.clear();</div><div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < obj.<a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a76c521af56ab0e96eb06deeb679f46f7">vars_size</a>(); ++i) {</div><div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> ref = obj.<a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i);</div><div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  int64_t coeff = obj.<a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(i);</div><div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  <span class="keywordflow">if</span> (!<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) coeff = -coeff;</div><div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l01350"></a><span class="lineno"> 1350</span> </div><div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  objective_overflow_detection_ +=</div><div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  std::abs(coeff) * <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)), std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div><div class="line"><a name="l01353"></a><span class="lineno"> 1353</span> </div><div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>  objective_map_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] += coeff;</div><div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  <span class="keywordflow">if</span> (objective_map_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>] == 0) {</div><div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].insert(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  }</div><div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  }</div><div class="line"><a name="l01362"></a><span class="lineno"> 1362</span> }</div><div class="line"><a name="l01363"></a><span class="lineno"> 1363</span> </div><div class="line"><a name="l01364"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa62da782b2270ca293531a0aea153fba"> 1364</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa62da782b2270ca293531a0aea153fba">PresolveContext::CanonicalizeObjective</a>() {</div><div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  int64_t offset_change = 0;</div><div class="line"><a name="l01366"></a><span class="lineno"> 1366</span> </div><div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  <span class="comment">// We replace each entry by its affine representative.</span></div><div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  <span class="comment">// Note that the non-deterministic loop is fine, but because we iterate</span></div><div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  <span class="comment">// one the map while modifying it, it is safer to do a copy rather than to</span></div><div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  <span class="comment">// try to handle that in one pass.</span></div><div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  tmp_entries_.clear();</div><div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : objective_map_) {</div><div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  tmp_entries_.push_back(entry);</div><div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  }</div><div class="line"><a name="l01375"></a><span class="lineno"> 1375</span> </div><div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  <span class="comment">// TODO(user): This is a bit duplicated with the presolve linear code.</span></div><div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  <span class="comment">// We also do not propagate back any domain restriction from the objective to</span></div><div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  <span class="comment">// the variables if any.</span></div><div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : tmp_entries_) {</div><div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = entry.first;</div><div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  <span class="keyword">const</span> <span class="keyword">auto</span> it = objective_map_.find(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  <span class="keywordflow">if</span> (it == objective_map_.end()) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  <span class="keyword">const</span> int64_t coeff = it->second;</div><div class="line"><a name="l01384"></a><span class="lineno"> 1384</span> </div><div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  <span class="comment">// If a variable only appear in objective, we can fix it!</span></div><div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  <span class="comment">// Note that we don't care if it was in affine relation, because if none</span></div><div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>  <span class="comment">// of the relations are left, then we can still fix it.</span></div><div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ab7b13b808e3dea6fc1e4006f7134e9f9">keep_all_feasible_solutions</a> && !objective_domain_is_constraining_ &&</div><div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f">ConstraintVariableGraphIsUpToDate</a>() &&</div><div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].size() == 1 &&</div><div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].contains(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>)) {</div><div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">UpdateRuleStats</a>(<span class="stringliteral">"objective: variable not used elsewhere"</span>);</div><div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  <span class="keywordflow">if</span> (coeff > 0) {</div><div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)))) {</div><div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  }</div><div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">IntersectDomainWith</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)))) {</div><div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  }</div><div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  }</div><div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  }</div><div class="line"><a name="l01403"></a><span class="lineno"> 1403</span> </div><div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div><div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  offset_change += coeff * <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  }</div><div class="line"><a name="l01410"></a><span class="lineno"> 1410</span> </div><div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html">AffineRelation::Relation</a> r = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">GetAffineRelation</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  <span class="keywordflow">if</span> (r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a> == <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01413"></a><span class="lineno"> 1413</span> </div><div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01416"></a><span class="lineno"> 1416</span> </div><div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  <span class="comment">// Do the substitution.</span></div><div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  offset_change += coeff * r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">offset</a>;</div><div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  <span class="keyword">const</span> int64_t new_coeff = objective_map_[r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>] +=</div><div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  coeff * r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">coeff</a>;</div><div class="line"><a name="l01421"></a><span class="lineno"> 1421</span> </div><div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>  <span class="comment">// Process new term.</span></div><div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  <span class="keywordflow">if</span> (new_coeff == 0) {</div><div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  objective_map_.erase(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>);</div><div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  var_to_constraints_[r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>  var_to_constraints_[r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>].insert(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  <span class="keywordflow">if</span> (<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">IsFixed</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>)) {</div><div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  offset_change += new_coeff * <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>);</div><div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  var_to_constraints_[r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  objective_map_.erase(r.<a class="code" href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">representative</a>);</div><div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  }</div><div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  }</div><div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>  }</div><div class="line"><a name="l01435"></a><span class="lineno"> 1435</span> </div><div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> implied_domain(0);</div><div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  int64_t gcd(0);</div><div class="line"><a name="l01438"></a><span class="lineno"> 1438</span> </div><div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  <span class="comment">// We need to sort the entries to be deterministic.</span></div><div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  tmp_entries_.clear();</div><div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : objective_map_) {</div><div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  tmp_entries_.push_back(entry);</div><div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  }</div><div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  std::sort(tmp_entries_.begin(), tmp_entries_.end());</div><div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : tmp_entries_) {</div><div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = entry.first;</div><div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>  <span class="keyword">const</span> int64_t coeff = entry.second;</div><div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  gcd = <a class="code" href="classoperations__research_1_1_math_util.html#ae94db7b2fa1d8e1b3c1dc6c683191609">MathUtil::GCD64</a>(gcd, std::abs(coeff));</div><div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>  implied_domain =</div><div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  implied_domain.<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">DomainOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).MultiplicationBy(coeff))</div><div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  .<a class="code" href="classoperations__research_1_1_domain.html#abd2c59687cc53dda333d0f18c457389b">RelaxIfTooComplex</a>();</div><div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  }</div><div class="line"><a name="l01453"></a><span class="lineno"> 1453</span> </div><div class="line"><a name="l01454"></a><span class="lineno"> 1454</span>  <span class="comment">// This is the new domain.</span></div><div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>  <span class="comment">// Note that the domain never include the offset.</span></div><div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>  objective_domain_ = objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(-offset_change))</div><div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a835826c4c5129b74553042a357a721ff">IntersectionWith</a>(implied_domain);</div><div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>  objective_domain_ =</div><div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>  objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#aee800549042643f64022ca6a1e554fa4">SimplifyUsingImpliedDomain</a>(implied_domain);</div><div class="line"><a name="l01460"></a><span class="lineno"> 1460</span> </div><div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  <span class="comment">// Updat the offset.</span></div><div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  objective_offset_ += offset_change;</div><div class="line"><a name="l01463"></a><span class="lineno"> 1463</span> </div><div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>  <span class="comment">// Maybe divide by GCD.</span></div><div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  <span class="keywordflow">if</span> (gcd > 1) {</div><div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& entry : objective_map_) {</div><div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  entry.second /= gcd;</div><div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  }</div><div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  objective_domain_ = objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#a1341b29865c5167a64de30c797672e4c">InverseMultiplicationBy</a>(gcd);</div><div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  objective_offset_ /= static_cast<double>(gcd);</div><div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  objective_scaling_factor_ *= static_cast<double>(gcd);</div><div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>  }</div><div class="line"><a name="l01473"></a><span class="lineno"> 1473</span> </div><div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  <span class="keywordflow">if</span> (objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#a8e12342fc420701fbffd97025421575a">IsEmpty</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01475"></a><span class="lineno"> 1475</span> </div><div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  <span class="comment">// Detect if the objective domain do not limit the "optimal" objective value.</span></div><div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>  <span class="comment">// If this is true, then we can apply any reduction that reduce the objective</span></div><div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  <span class="comment">// value without any issues.</span></div><div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  objective_domain_is_constraining_ =</div><div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  !implied_domain</div><div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a835826c4c5129b74553042a357a721ff">IntersectionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>(),</div><div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>  objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#aa74ea8cd1b0767659f704b482d07c103">Max</a>()))</div><div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>  .<a class="code" href="classoperations__research_1_1_domain.html#a1f922def1b57974333f228818cd04e68">IsIncludedIn</a>(objective_domain_);</div><div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l01485"></a><span class="lineno"> 1485</span> }</div><div class="line"><a name="l01486"></a><span class="lineno"> 1486</span> </div><div class="line"><a name="l01487"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaed725b098e5d931862a74b496564e37"> 1487</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#aaed725b098e5d931862a74b496564e37">PresolveContext::RemoveVariableFromObjective</a>(<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) {</div><div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01490"></a><span class="lineno"> 1490</span> }</div><div class="line"><a name="l01491"></a><span class="lineno"> 1491</span> </div><div class="line"><a name="l01492"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1e65dc236d5729de4938834d779d9f6f"> 1492</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1e65dc236d5729de4938834d779d9f6f">PresolveContext::AddToObjective</a>(<span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>  int64_t& map_ref = objective_map_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  map_ref += <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div><div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>  <span class="keywordflow">if</span> (map_ref == 0) {</div><div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].insert(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  }</div><div class="line"><a name="l01501"></a><span class="lineno"> 1501</span> }</div><div class="line"><a name="l01502"></a><span class="lineno"> 1502</span> </div><div class="line"><a name="l01503"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a02a3444590b38a8e99aba5eb8a1ca9d9"> 1503</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a02a3444590b38a8e99aba5eb8a1ca9d9">PresolveContext::AddToObjectiveOffset</a>(int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  <span class="comment">// Tricky: The objective domain is without the offset, so we need to shift it.</span></div><div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  objective_offset_ += static_cast<double>(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>  objective_domain_ = objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(-<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>));</div><div class="line"><a name="l01507"></a><span class="lineno"> 1507</span> }</div><div class="line"><a name="l01508"></a><span class="lineno"> 1508</span> </div><div class="line"><a name="l01509"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a4bf47c6b5724e9a3a7df78486f9bdc41"> 1509</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a4bf47c6b5724e9a3a7df78486f9bdc41">PresolveContext::SubstituteVariableInObjective</a>(</div><div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  <span class="keywordtype">int</span> var_in_equality, int64_t coeff_in_equality,</div><div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>& equality, std::vector<int>* new_vars_in_objective) {</div><div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#acdc90a25e531e4180c495f4ecf2aca2e">enforcement_literal</a>().empty());</div><div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(var_in_equality));</div><div class="line"><a name="l01514"></a><span class="lineno"> 1514</span> </div><div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  <span class="keywordflow">if</span> (new_vars_in_objective != <span class="keyword">nullptr</span>) new_vars_in_objective->clear();</div><div class="line"><a name="l01516"></a><span class="lineno"> 1516</span> </div><div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  <span class="comment">// We can only "easily" substitute if the objective coefficient is a multiple</span></div><div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  <span class="comment">// of the one in the constraint.</span></div><div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  <span class="keyword">const</span> int64_t coeff_in_objective =</div><div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  <a class="code" href="namespacegtl.html#abce27d097bc5680207b294bdad75f59f">gtl::FindOrDie</a>(objective_map_, var_in_equality);</div><div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(coeff_in_equality, 0);</div><div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(coeff_in_objective % coeff_in_equality, 0);</div><div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  <span class="keyword">const</span> int64_t multiplier = coeff_in_objective / coeff_in_equality;</div><div class="line"><a name="l01524"></a><span class="lineno"> 1524</span> </div><div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  <span class="comment">// Abort if the new objective seems to violate our overflow preconditions.</span></div><div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  int64_t change = 0;</div><div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">linear</a>().<a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>().size(); ++i) {</div><div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">linear</a>().<a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i);</div><div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) == var_in_equality) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  int64_t coeff = equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">linear</a>().<a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(i);</div><div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  change +=</div><div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  std::abs(coeff) * <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)), std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)));</div><div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  }</div><div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  <span class="keyword">const</span> int64_t new_value =</div><div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  <a class="code" href="namespaceoperations__research.html#a111f44b9b9cf67a8e8d83794ac9f5291">CapAdd</a>(<a class="code" href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">CapProd</a>(std::abs(multiplier), change),</div><div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  objective_overflow_detection_ -</div><div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  std::abs(coeff_in_equality) *</div><div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::max</a>(std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">MinOf</a>(var_in_equality)),</div><div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  std::abs(<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">MaxOf</a>(var_in_equality))));</div><div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  <span class="keywordflow">if</span> (new_value == <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<int64_t>::max</a>()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  objective_overflow_detection_ = new_value;</div><div class="line"><a name="l01542"></a><span class="lineno"> 1542</span> </div><div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">linear</a>().<a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>().size(); ++i) {</div><div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">linear</a>().<a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">vars</a>(i);</div><div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  int64_t coeff = equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">linear</a>().<a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a50faf32570e4f9cd348c797231fe35e0">coeffs</a>(i);</div><div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  <span class="keywordflow">if</span> (!<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) {</div><div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>  coeff = -coeff;</div><div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  }</div><div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>  <span class="keywordflow">if</span> (<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> == var_in_equality) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01551"></a><span class="lineno"> 1551</span> </div><div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>  int64_t& map_ref = objective_map_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>];</div><div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  <span class="keywordflow">if</span> (map_ref == 0 && new_vars_in_objective != <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  new_vars_in_objective->push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  }</div><div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>  map_ref -= coeff * multiplier;</div><div class="line"><a name="l01557"></a><span class="lineno"> 1557</span> </div><div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  <span class="keywordflow">if</span> (map_ref == 0) {</div><div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].insert(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  }</div><div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>  }</div><div class="line"><a name="l01565"></a><span class="lineno"> 1565</span> </div><div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  objective_map_.erase(var_in_equality);</div><div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  var_to_constraints_[var_in_equality].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01568"></a><span class="lineno"> 1568</span> </div><div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  <span class="comment">// Deal with the offset.</span></div><div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  <a class="code" href="classoperations__research_1_1_domain.html">Domain</a> offset = <a class="code" href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">ReadDomainFromProto</a>(equality.<a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">linear</a>());</div><div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>  <a class="code" href="base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0">DCHECK_EQ</a>(offset.<a class="code" href="classoperations__research_1_1_domain.html#a8cf21a67f7d81a800ff912239bb2db64">Min</a>(), offset.<a class="code" href="classoperations__research_1_1_domain.html#aa74ea8cd1b0767659f704b482d07c103">Max</a>());</div><div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  <span class="keywordtype">bool</span> exact = <span class="keyword">true</span>;</div><div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>  offset = offset.<a class="code" href="classoperations__research_1_1_domain.html#a63a708c626b59b4504ddb879496c894e">MultiplicationBy</a>(multiplier, &exact);</div><div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(exact);</div><div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!offset.<a class="code" href="classoperations__research_1_1_domain.html#a8e12342fc420701fbffd97025421575a">IsEmpty</a>());</div><div class="line"><a name="l01576"></a><span class="lineno"> 1576</span> </div><div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  <span class="comment">// Tricky: The objective domain is without the offset, so we need to shift it.</span></div><div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>  objective_offset_ += static_cast<double>(offset.<a class="code" href="classoperations__research_1_1_domain.html#a8cf21a67f7d81a800ff912239bb2db64">Min</a>());</div><div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>  objective_domain_ = objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(-offset.<a class="code" href="classoperations__research_1_1_domain.html#a8cf21a67f7d81a800ff912239bb2db64">Min</a>()));</div><div class="line"><a name="l01580"></a><span class="lineno"> 1580</span> </div><div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>  <span class="comment">// Because we can assume that the constraint we used was constraining</span></div><div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  <span class="comment">// (otherwise it would have been removed), the objective domain should be now</span></div><div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  <span class="comment">// constraining.</span></div><div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  objective_domain_is_constraining_ = <span class="keyword">true</span>;</div><div class="line"><a name="l01585"></a><span class="lineno"> 1585</span> </div><div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  <span class="keywordflow">if</span> (objective_domain_.IsEmpty()) {</div><div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a5aa53538ba8adaa0bea1c3c0727425b0">NotifyThatModelIsUnsat</a>();</div><div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>  }</div><div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l01590"></a><span class="lineno"> 1590</span> }</div><div class="line"><a name="l01591"></a><span class="lineno"> 1591</span> </div><div class="line"><a name="l01592"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae42cae46d8792621471dd137bf9bb3cc"> 1592</a></span> <span class="keywordtype">bool</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae42cae46d8792621471dd137bf9bb3cc">PresolveContext::ExploitExactlyOneInObjective</a>(</div><div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  absl::Span<const int> exactly_one) {</div><div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>  int64_t min_coeff = <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<int64_t>::max</a>();</div><div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : exactly_one) {</div><div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  <span class="keyword">const</span> <span class="keyword">auto</span> it = objective_map_.find(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref));</div><div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>  <span class="keywordflow">if</span> (it == objective_map_.end()) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l01598"></a><span class="lineno"> 1598</span> </div><div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  <span class="keyword">const</span> int64_t coeff = it->second;</div><div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) {</div><div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  min_coeff = <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::min</a>(min_coeff, coeff);</div><div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>  <span class="comment">// Objective = coeff * var = coeff * (1 - ref);</span></div><div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  min_coeff = <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::min</a>(min_coeff, -coeff);</div><div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>  }</div><div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>  }</div><div class="line"><a name="l01607"></a><span class="lineno"> 1607</span> </div><div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>  int64_t offset = min_coeff;</div><div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : exactly_one) {</div><div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref);</div><div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  int64_t& map_ref = objective_map_.at(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref)) {</div><div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  map_ref -= min_coeff;</div><div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>  <span class="keywordflow">if</span> (map_ref == 0) {</div><div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  }</div><div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  <span class="comment">// Term = coeff * (1 - X) = coeff - coeff * X;</span></div><div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>  <span class="comment">// So -coeff -> -coeff -min_coeff</span></div><div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>  <span class="comment">// And Term = coeff + min_coeff - min_coeff - (coeff + min_coeff) * X</span></div><div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>  <span class="comment">// = (coeff + min_coeff) * (1 - X) - min_coeff;</span></div><div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  map_ref += min_coeff;</div><div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>  <span class="keywordflow">if</span> (map_ref == 0) {</div><div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>  objective_map_.erase(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>  var_to_constraints_[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>].erase(<a class="code" href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">kObjectiveConstraint</a>);</div><div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>  }</div><div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>  offset -= min_coeff;</div><div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>  }</div><div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>  }</div><div class="line"><a name="l01631"></a><span class="lineno"> 1631</span> </div><div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>  <span class="comment">// Note that the domain never include the offset, so we need to update it.</span></div><div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>  <span class="keywordflow">if</span> (offset != 0) {</div><div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>  objective_offset_ += offset;</div><div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>  objective_domain_ = objective_domain_.<a class="code" href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">AdditionWith</a>(<a class="code" href="classoperations__research_1_1_domain.html">Domain</a>(-offset));</div><div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>  }</div><div class="line"><a name="l01637"></a><span class="lineno"> 1637</span> </div><div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l01639"></a><span class="lineno"> 1639</span> }</div><div class="line"><a name="l01640"></a><span class="lineno"> 1640</span> </div><div class="line"><a name="l01641"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a36794cf424ca2d69bc4774437a61a88e"> 1641</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a36794cf424ca2d69bc4774437a61a88e">PresolveContext::WriteObjectiveToProto</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>  <span class="comment">// We need to sort the entries to be deterministic.</span></div><div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>  std::vector<std::pair<int, int64_t>> entries;</div><div class="line"><a name="l01644"></a><span class="lineno"> 1644</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : objective_map_) {</div><div class="line"><a name="l01645"></a><span class="lineno"> 1645</span>  entries.push_back(entry);</div><div class="line"><a name="l01646"></a><span class="lineno"> 1646</span>  }</div><div class="line"><a name="l01647"></a><span class="lineno"> 1647</span>  std::sort(entries.begin(), entries.end());</div><div class="line"><a name="l01648"></a><span class="lineno"> 1648</span> </div><div class="line"><a name="l01649"></a><span class="lineno"> 1649</span>  <a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html">CpObjectiveProto</a>* mutable_obj = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ad3badc7aa3d94e81e0126edbfa452fda">mutable_objective</a>();</div><div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>  mutable_obj-><a class="code" href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#ac7453c28e1da85ea4728b31419c0d6b7">set_offset</a>(objective_offset_);</div><div class="line"><a name="l01651"></a><span class="lineno"> 1651</span>  mutable_obj->set_scaling_factor(objective_scaling_factor_);</div><div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">FillDomainInProto</a>(objective_domain_, mutable_obj);</div><div class="line"><a name="l01653"></a><span class="lineno"> 1653</span>  mutable_obj->clear_vars();</div><div class="line"><a name="l01654"></a><span class="lineno"> 1654</span>  mutable_obj->clear_coeffs();</div><div class="line"><a name="l01655"></a><span class="lineno"> 1655</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : entries) {</div><div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>  mutable_obj->add_vars(entry.first);</div><div class="line"><a name="l01657"></a><span class="lineno"> 1657</span>  mutable_obj->add_coeffs(entry.second);</div><div class="line"><a name="l01658"></a><span class="lineno"> 1658</span>  }</div><div class="line"><a name="l01659"></a><span class="lineno"> 1659</span> }</div><div class="line"><a name="l01660"></a><span class="lineno"> 1660</span> </div><div class="line"><a name="l01661"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#adc37a02104d979e9943fadfd2e209686"> 1661</a></span> <span class="keywordtype">int</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#adc37a02104d979e9943fadfd2e209686">PresolveContext::GetOrCreateReifiedPrecedenceLiteral</a>(<span class="keywordtype">int</span> time_i, <span class="keywordtype">int</span> time_j,</div><div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>  <span class="keywordtype">int</span> active_i,</div><div class="line"><a name="l01663"></a><span class="lineno"> 1663</span>  <span class="keywordtype">int</span> active_j) {</div><div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9f3443b281c705edf1779f746637ad9b">LiteralIsFalse</a>(active_i));</div><div class="line"><a name="l01665"></a><span class="lineno"> 1665</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a9f3443b281c705edf1779f746637ad9b">LiteralIsFalse</a>(active_j));</div><div class="line"><a name="l01666"></a><span class="lineno"> 1666</span> </div><div class="line"><a name="l01667"></a><span class="lineno"> 1667</span>  <span class="comment">// Sort the active literals.</span></div><div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>  <span class="keywordflow">if</span> (active_j < active_i) <a class="code" href="namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2">std::swap</a>(active_i, active_j);</div><div class="line"><a name="l01669"></a><span class="lineno"> 1669</span> </div><div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>  <span class="keyword">const</span> std::tuple<int, int, int, int> key =</div><div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>  std::make_tuple(time_i, time_j, active_i, active_j);</div><div class="line"><a name="l01672"></a><span class="lineno"> 1672</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& it = reified_precedences_cache_.find(key);</div><div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>  <span class="keywordflow">if</span> (it != reified_precedences_cache_.end()) <span class="keywordflow">return</span> it->second;</div><div class="line"><a name="l01674"></a><span class="lineno"> 1674</span> </div><div class="line"><a name="l01675"></a><span class="lineno"> 1675</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> result = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a0967c575f9db0c79ed2e7930a0d6a091">NewBoolVar</a>();</div><div class="line"><a name="l01676"></a><span class="lineno"> 1676</span>  reified_precedences_cache_[key] = result;</div><div class="line"><a name="l01677"></a><span class="lineno"> 1677</span> </div><div class="line"><a name="l01678"></a><span class="lineno"> 1678</span>  <span class="comment">// result => (time_i <= time_j) && active_i && active_j.</span></div><div class="line"><a name="l01679"></a><span class="lineno"> 1679</span>  <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>* <span class="keyword">const</span> lesseq = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ac01de597eeeff5521a8bf54568bf1373">add_constraints</a>();</div><div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>  lesseq-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#acfab2074ffdcaf9686057126c5e29d38">add_enforcement_literal</a>(result);</div><div class="line"><a name="l01681"></a><span class="lineno"> 1681</span>  lesseq-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#aecb2bc94116e771000e5be7f8e3a7f6c">add_vars</a>(time_i);</div><div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>  lesseq-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#aecb2bc94116e771000e5be7f8e3a7f6c">add_vars</a>(time_j);</div><div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>  lesseq-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a9bb52f9d2a03820db9271cdae2ce97d5">add_coeffs</a>(-1);</div><div class="line"><a name="l01684"></a><span class="lineno"> 1684</span>  lesseq-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a9bb52f9d2a03820db9271cdae2ce97d5">add_coeffs</a>(1);</div><div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>  lesseq-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a2266c77ad6db8de45560357c1436e558">add_domain</a>(0);</div><div class="line"><a name="l01686"></a><span class="lineno"> 1686</span>  lesseq-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a2266c77ad6db8de45560357c1436e558">add_domain</a>(<a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<int64_t>::max</a>());</div><div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">LiteralIsTrue</a>(active_i)) {</div><div class="line"><a name="l01688"></a><span class="lineno"> 1688</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1aadaad9b8af16ab5a208c682e2e1717">AddImplication</a>(result, active_i);</div><div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>  }</div><div class="line"><a name="l01690"></a><span class="lineno"> 1690</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">LiteralIsTrue</a>(active_j)) {</div><div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>  <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a1aadaad9b8af16ab5a208c682e2e1717">AddImplication</a>(result, active_j);</div><div class="line"><a name="l01692"></a><span class="lineno"> 1692</span>  }</div><div class="line"><a name="l01693"></a><span class="lineno"> 1693</span> </div><div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>  <span class="comment">// Not(result) && active_i && active_j => (time_i > time_j)</span></div><div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>  <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html">ConstraintProto</a>* <span class="keyword">const</span> greater = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ac01de597eeeff5521a8bf54568bf1373">add_constraints</a>();</div><div class="line"><a name="l01696"></a><span class="lineno"> 1696</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#aecb2bc94116e771000e5be7f8e3a7f6c">add_vars</a>(time_i);</div><div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#aecb2bc94116e771000e5be7f8e3a7f6c">add_vars</a>(time_j);</div><div class="line"><a name="l01698"></a><span class="lineno"> 1698</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a9bb52f9d2a03820db9271cdae2ce97d5">add_coeffs</a>(-1);</div><div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a9bb52f9d2a03820db9271cdae2ce97d5">add_coeffs</a>(1);</div><div class="line"><a name="l01700"></a><span class="lineno"> 1700</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a2266c77ad6db8de45560357c1436e558">add_domain</a>(<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>());</div><div class="line"><a name="l01701"></a><span class="lineno"> 1701</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">mutable_linear</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a2266c77ad6db8de45560357c1436e558">add_domain</a>(-1);</div><div class="line"><a name="l01702"></a><span class="lineno"> 1702</span> </div><div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>  <span class="comment">// Manages enforcement literal.</span></div><div class="line"><a name="l01704"></a><span class="lineno"> 1704</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#acfab2074ffdcaf9686057126c5e29d38">add_enforcement_literal</a>(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(result));</div><div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">LiteralIsTrue</a>(active_i)) {</div><div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#acfab2074ffdcaf9686057126c5e29d38">add_enforcement_literal</a>(active_i);</div><div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>  }</div><div class="line"><a name="l01708"></a><span class="lineno"> 1708</span>  <span class="keywordflow">if</span> (!<a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">LiteralIsTrue</a>(active_j)) {</div><div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>  greater-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#acfab2074ffdcaf9686057126c5e29d38">add_enforcement_literal</a>(active_j);</div><div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>  }</div><div class="line"><a name="l01711"></a><span class="lineno"> 1711</span> </div><div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>  <span class="comment">// This is redundant but should improves performance.</span></div><div class="line"><a name="l01713"></a><span class="lineno"> 1713</span>  <span class="comment">//</span></div><div class="line"><a name="l01714"></a><span class="lineno"> 1714</span>  <span class="comment">// If GetOrCreateReifiedPrecedenceLiteral(time_j, time_i, active_j, active_j)</span></div><div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>  <span class="comment">// (the reverse precedence) has been called too, then we can link the two</span></div><div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>  <span class="comment">// precedence literals, and the two active literals together.</span></div><div class="line"><a name="l01717"></a><span class="lineno"> 1717</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& rev_it = reified_precedences_cache_.find(</div><div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>  std::make_tuple(time_j, time_i, active_i, active_j));</div><div class="line"><a name="l01719"></a><span class="lineno"> 1719</span>  <span class="keywordflow">if</span> (rev_it != reified_precedences_cache_.end()) {</div><div class="line"><a name="l01720"></a><span class="lineno"> 1720</span>  <span class="keyword">auto</span>* <span class="keyword">const</span> bool_or = <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">working_model</a>-><a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ac01de597eeeff5521a8bf54568bf1373">add_constraints</a>()-><a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ae26e2a099b411b50dd1d4c6605837d0a">mutable_bool_or</a>();</div><div class="line"><a name="l01721"></a><span class="lineno"> 1721</span>  bool_or-><a class="code" href="classoperations__research_1_1sat_1_1_bool_argument_proto.html#a9abd20cd5c98c0a4535d168a1c7bb18e">add_literals</a>(result);</div><div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>  bool_or->add_literals(rev_it->second);</div><div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>  bool_or->add_literals(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(active_i));</div><div class="line"><a name="l01724"></a><span class="lineno"> 1724</span>  bool_or->add_literals(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(active_j));</div><div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>  }</div><div class="line"><a name="l01726"></a><span class="lineno"> 1726</span> </div><div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l01728"></a><span class="lineno"> 1728</span> }</div><div class="line"><a name="l01729"></a><span class="lineno"> 1729</span> </div><div class="line"><a name="l01730"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae58b8c61c87bd4625b0a5db975652151"> 1730</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#ae58b8c61c87bd4625b0a5db975652151">PresolveContext::ClearPrecedenceCache</a>() {</div><div class="line"><a name="l01731"></a><span class="lineno"> 1731</span>  reified_precedences_cache_.clear();</div><div class="line"><a name="l01732"></a><span class="lineno"> 1732</span> }</div><div class="line"><a name="l01733"></a><span class="lineno"> 1733</span> </div><div class="line"><a name="l01734"></a><span class="lineno"><a class="line" href="classoperations__research_1_1sat_1_1_presolve_context.html#a40432f5ffa1ea8255071161d96f598d1"> 1734</a></span> <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#a40432f5ffa1ea8255071161d96f598d1">PresolveContext::LogInfo</a>() {</div><div class="line"><a name="l01735"></a><span class="lineno"> 1735</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">""</span>);</div><div class="line"><a name="l01736"></a><span class="lineno"> 1736</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">"Presolve summary:"</span>);</div><div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">" - "</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#abd6f7af5d9b31061a7b03ec44488ea4c">NumAffineRelations</a>(),</div><div class="line"><a name="l01738"></a><span class="lineno"> 1738</span>  <span class="stringliteral">" affine relations were detected."</span>);</div><div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">" - "</span>, <a class="code" href="classoperations__research_1_1sat_1_1_presolve_context.html#acb73a5ab7e240d5f93938262f2d8b826">NumEquivRelations</a>(),</div><div class="line"><a name="l01740"></a><span class="lineno"> 1740</span>  <span class="stringliteral">" variable equivalence relations were detected."</span>);</div><div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>  std::map<std::string, int> sorted_rules(stats_by_rule_name_.begin(),</div><div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>  stats_by_rule_name_.end());</div><div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& entry : sorted_rules) {</div><div class="line"><a name="l01744"></a><span class="lineno"> 1744</span>  <span class="keywordflow">if</span> (entry.second == 1) {</div><div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">" - rule '"</span>, entry.first, <span class="stringliteral">"' was applied 1 time."</span>);</div><div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01747"></a><span class="lineno"> 1747</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(logger_, <span class="stringliteral">" - rule '"</span>, entry.first, <span class="stringliteral">"' was applied "</span>,</div><div class="line"><a name="l01748"></a><span class="lineno"> 1748</span>  entry.second, <span class="stringliteral">" times."</span>);</div><div class="line"><a name="l01749"></a><span class="lineno"> 1749</span>  }</div><div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>  }</div><div class="line"><a name="l01751"></a><span class="lineno"> 1751</span> }</div><div class="line"><a name="l01752"></a><span class="lineno"> 1752</span> </div><div class="line"><a name="l01753"></a><span class="lineno"> 1753</span> } <span class="comment">// namespace sat</span></div><div class="line"><a name="l01754"></a><span class="lineno"> 1754</span> } <span class="comment">// namespace operations_research</span></div><div class="ttc" id="classoperations__research_1_1sat_1_1_linear_expression_proto_html_a728b5b75967156875ac60336daf4e29d"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a728b5b75967156875ac60336daf4e29d">operations_research::sat::LinearExpressionProto::offset</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int64 offset() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07038">cp_model.pb.h:7038</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_a1d467595ed8fe5b85dc95328ee1c2770"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a1d467595ed8fe5b85dc95328ee1c2770">operations_research::sat::UsedVariables</a></div><div class="ttdeci">std::vector< int > UsedVariables(const ConstraintProto &ct)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8cc_source.html#l00484">cp_model_utils.cc:484</a></div></div>
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<div class="ttc" id="base_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#l00491">base/logging.h:491</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_saved_literal_html_adf2db0610413d540ca6c4e4f1cce5fd6"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_saved_literal.html#adf2db0610413d540ca6c4e4f1cce5fd6">operations_research::sat::SavedLiteral::Get</a></div><div class="ttdeci">int Get(PresolveContext *context) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00029">presolve_context.cc:29</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_af597da31a1aed22d4bbd0e9398728a9b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#af597da31a1aed22d4bbd0e9398728a9b">operations_research::sat::PresolveContext::MinOf</a></div><div class="ttdeci">int64_t MinOf(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00112">presolve_context.cc:112</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_affine_relation_html_ac776696766f8c91ca8abc02f41d5854b"><div class="ttname"><a href="classoperations__research_1_1_affine_relation.html#ac776696766f8c91ca8abc02f41d5854b">operations_research::AffineRelation::Get</a></div><div class="ttdeci">Relation Get(int x) const</div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00214">affine_relation.h:214</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html_ac7453c28e1da85ea4728b31419c0d6b7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#ac7453c28e1da85ea4728b31419c0d6b7">operations_research::sat::CpObjectiveProto::set_offset</a></div><div class="ttdeci">void set_offset(double value)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l11344">cp_model.pb.h:11344</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_constraint_proto_html_a4392924fce7f5d9851171c0915a478a6"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a4392924fce7f5d9851171c0915a478a6">operations_research::sat::LinearConstraintProto::mutable_vars</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::RepeatedField< ::PROTOBUF_NAMESPACE_ID::int32 > * mutable_vars()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07282">cp_model.pb.h:7282</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a62cd771660767621e917b2c256182c4e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a62cd771660767621e917b2c256182c4e">operations_research::sat::PresolveContext::InitializeNewDomains</a></div><div class="ttdeci">void InitializeNewDomains()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00942">presolve_context.cc:942</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a54cf7f0077717d59a828b656b60c1615"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a54cf7f0077717d59a828b656b60c1615">operations_research::sat::PresolveContext::VariableIsUniqueAndRemovable</a></div><div class="ttdeci">bool VariableIsUniqueAndRemovable(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00283">presolve_context.cc:283</a></div></div>
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<div class="ttc" id="alldiff__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="classoperations__research_1_1_sparse_bitset_html_a41f798a04019147982b29c576ff9d8b7"><div class="ttname"><a href="classoperations__research_1_1_sparse_bitset.html#a41f798a04019147982b29c576ff9d8b7">operations_research::SparseBitset::Set</a></div><div class="ttdeci">void Set(IntegerType index)</div><div class="ttdef"><b>Definition:</b> <a href="bitset_8h_source.html#l00804">bitset.h:804</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_aed2a07aad05b4ad8e05cf5fe7b239a1a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#aed2a07aad05b4ad8e05cf5fe7b239a1a">operations_research::sat::PresolveContext::ReadObjectiveFromProto</a></div><div class="ttdeci">void ReadObjectiveFromProto()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01321">presolve_context.cc:1321</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html_aa9cb4e4ba977c364365487c63ed32446"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#aa9cb4e4ba977c364365487c63ed32446">operations_research::sat::CpObjectiveProto::domain</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int64 domain(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l11382">cp_model.pb.h:11382</a></div></div>
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<div class="ttc" id="util_2logging_8h_html_a5f67b653dd99ddbe5e3367e3b4b7b532"><div class="ttname"><a href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a></div><div class="ttdeci">#define SOLVER_LOG(logger,...)</div><div class="ttdef"><b>Definition:</b> <a href="util_2logging_8h_source.html#l00063">util/logging.h:63</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html_acfab2074ffdcaf9686057126c5e29d38"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#acfab2074ffdcaf9686057126c5e29d38">operations_research::sat::ConstraintProto::add_enforcement_literal</a></div><div class="ttdeci">void add_enforcement_literal(::PROTOBUF_NAMESPACE_ID::int32 value)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l09275">cp_model.pb.h:9275</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a1341b29865c5167a64de30c797672e4c"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a1341b29865c5167a64de30c797672e4c">operations_research::Domain::InverseMultiplicationBy</a></div><div class="ttdeci">Domain InverseMultiplicationBy(const int64_t coeff) const</div><div class="ttdoc">Returns {x ∈ Int64, ∃ e ∈ D, x * coeff = e}.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00457">sorted_interval_list.cc:457</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a5763f8709716596a3aa728bacae05a7b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a5763f8709716596a3aa728bacae05a7b">operations_research::sat::PresolveContext::RemoveVariableFromAffineRelation</a></div><div class="ttdeci">void RemoveVariableFromAffineRelation(int var)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00675">presolve_context.cc:675</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a2563663eeef59c23110ae4e2a80d8c9f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a2563663eeef59c23110ae4e2a80d8c9f">operations_research::sat::PresolveContext::ConstraintVariableGraphIsUpToDate</a></div><div class="ttdeci">bool ConstraintVariableGraphIsUpToDate() const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00510">presolve_context.cc:510</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a11f5290ed8216eea13b9d7383cb4c55f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a11f5290ed8216eea13b9d7383cb4c55f">operations_research::sat::PresolveContext::ConstraintVariableUsageIsConsistent</a></div><div class="ttdeci">bool ConstraintVariableUsageIsConsistent()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00529">presolve_context.cc:529</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a02302d3a45d02003dcbf288d045ebd86"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a02302d3a45d02003dcbf288d045ebd86">operations_research::sat::PresolveContext::modified_domains</a></div><div class="ttdeci">SparseBitset< int64_t > modified_domains</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00456">presolve_context.h:456</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_aa49a8967edab300018eeaa14a27b7210"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#aa49a8967edab300018eeaa14a27b7210">operations_research::sat::PresolveContext::UpdateRuleStats</a></div><div class="ttdeci">void UpdateRuleStats(const std::string &name, int num_times=1)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00442">presolve_context.cc:442</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a8fc1d49d1e1bf7261f15ccc6c23c4b10"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a8fc1d49d1e1bf7261f15ccc6c23c4b10">operations_research::sat::PresolveContext::StoreBooleanEqualityRelation</a></div><div class="ttdeci">void StoreBooleanEqualityRelation(int ref_a, int ref_b)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00819">presolve_context.cc:819</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html">operations_research::sat::CpObjectiveProto</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l04621">cp_model.pb.h:4621</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a1e65dc236d5729de4938834d779d9f6f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a1e65dc236d5729de4938834d779d9f6f">operations_research::sat::PresolveContext::AddToObjective</a></div><div class="ttdeci">void AddToObjective(int var, int64_t value)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01492">presolve_context.cc:1492</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a2877bce637c80df492977b5b6487d563"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a2877bce637c80df492977b5b6487d563">operations_research::sat::PresolveContext::StoreLiteralImpliesVarNEqValue</a></div><div class="ttdeci">bool StoreLiteralImpliesVarNEqValue(int literal, int var, int64_t value)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01232">presolve_context.cc:1232</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ad72f81052c0b904f369ac1cee7217b83"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ad72f81052c0b904f369ac1cee7217b83">operations_research::sat::PresolveContext::ConstraintIsOptional</a></div><div class="ttdeci">bool ConstraintIsOptional(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00432">presolve_context.cc:432</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ada5d036ab04018d9ee3ed60888843102"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ada5d036ab04018d9ee3ed60888843102">operations_research::sat::PresolveContext::GetOrCreateConstantVar</a></div><div class="ttdeci">int GetOrCreateConstantVar(int64_t cst)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00048">presolve_context.cc:48</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a7ea7bb314db4dbe4f3b2cac16a2af20f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a7ea7bb314db4dbe4f3b2cac16a2af20f">operations_research::sat::PresolveContext::CanonicalizeDomainOfSizeTwo</a></div><div class="ttdeci">void CanonicalizeDomainOfSizeTwo(int var)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01041">presolve_context.cc:1041</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a308f62525f1941cc6ef7f943bd2c4c18"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a308f62525f1941cc6ef7f943bd2c4c18">operations_research::sat::PresolveContext::StartMin</a></div><div class="ttdeci">int64_t StartMin(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00215">presolve_context.cc:215</a></div></div>
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<div class="ttc" id="base_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#l00979">base/logging.h:979</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a100a8cc947bbdb3fd264d42eeeeaa849"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a100a8cc947bbdb3fd264d42eeeeaa849">operations_research::sat::PresolveContext::ConstraintIsInactive</a></div><div class="ttdeci">bool ConstraintIsInactive(int ct_index) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00420">presolve_context.cc:420</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_af97bdc26758ff0f27314cafb7c2d7044"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#af97bdc26758ff0f27314cafb7c2d7044">operations_research::sat::PresolveContext::GetAbsRelation</a></div><div class="ttdeci">bool GetAbsRelation(int target_ref, int *ref)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00860">presolve_context.cc:860</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_affine_relation_html"><div class="ttname"><a href="classoperations__research_1_1_affine_relation.html">operations_research::AffineRelation</a></div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00036">affine_relation.h:36</a></div></div>
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<div class="ttc" id="default__search_8cc_html_ac673bc430bdc3fdaa09f7becf98ef267"><div class="ttname"><a href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a></div><div class="ttdeci">const std::string name</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00813">default_search.cc:813</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a3999a4ff1f53b54b40c8cd396105572a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a3999a4ff1f53b54b40c8cd396105572a">operations_research::sat::PresolveContext::StoreAffineRelation</a></div><div class="ttdeci">bool StoreAffineRelation(int ref_x, int ref_y, int64_t coeff, int64_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00703">presolve_context.cc:703</a></div></div>
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<div class="ttc" id="namespaceoperations__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#l00263">id_map.h:263</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ad5e9882b154b8a7e8619b29c5631386e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ad5e9882b154b8a7e8619b29c5631386e">operations_research::sat::PresolveContext::RefDebugString</a></div><div class="ttdeci">std::string RefDebugString(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00930">presolve_context.cc:930</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_a55963ffe87280b37dce97b9a8cbd03ae"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a55963ffe87280b37dce97b9a8cbd03ae">operations_research::sat::kAffineRelationConstraint</a></div><div class="ttdeci">constexpr int kAffineRelationConstraint</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00039">presolve_context.h:39</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_sparse_bitset_html_abf34ab06e7250e92954c2b5a263e5612"><div class="ttname"><a href="classoperations__research_1_1_sparse_bitset.html#abf34ab06e7250e92954c2b5a263e5612">operations_research::SparseBitset::Resize</a></div><div class="ttdeci">void Resize(IntegerType size)</div><div class="ttdef"><b>Definition:</b> <a href="bitset_8h_source.html#l00790">bitset.h:790</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_acdbc8ad33149d45a6e6fcd8b72fd68ed"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">operations_research::sat::PositiveRef</a></div><div class="ttdeci">int PositiveRef(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00035">cp_model_utils.h:35</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_constraint_proto_html_a9bb52f9d2a03820db9271cdae2ce97d5"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a9bb52f9d2a03820db9271cdae2ce97d5">operations_research::sat::LinearConstraintProto::add_coeffs</a></div><div class="ttdeci">void add_coeffs(::PROTOBUF_NAMESPACE_ID::int64 value)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07311">cp_model.pb.h:7311</a></div></div>
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<div class="ttc" id="namespaceoperations__research_html_a23fc0ff92a3f47fe0bd2ad3eac3c9b57"><div class="ttname"><a href="namespaceoperations__research.html#a23fc0ff92a3f47fe0bd2ad3eac3c9b57">operations_research::ToString</a></div><div class="ttdeci">const absl::string_view ToString(MPSolver::OptimizationProblemType optimization_problem_type)</div><div class="ttdef"><b>Definition:</b> <a href="linear__solver_8cc_source.html#l00576">linear_solver.cc:576</a></div></div>
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<div class="ttc" id="base_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#l00416">base/logging.h:416</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a0967c575f9db0c79ed2e7930a0d6a091"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a0967c575f9db0c79ed2e7930a0d6a091">operations_research::sat::PresolveContext::NewBoolVar</a></div><div class="ttdeci">int NewBoolVar()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00046">presolve_context.cc:46</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ab246112417bad87cb948820e304208ab"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ab246112417bad87cb948820e304208ab">operations_research::sat::PresolveContext::VariableIsNotUsedAnymore</a></div><div class="ttdeci">bool VariableIsNotUsedAnymore(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00300">presolve_context.cc:300</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_constraint_proto_html_a50faf32570e4f9cd348c797231fe35e0"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a50faf32570e4f9cd348c797231fe35e0">operations_research::sat::LinearConstraintProto::coeffs</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int64 coeffs(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07300">cp_model.pb.h:7300</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ab7b13b808e3dea6fc1e4006f7134e9f9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ab7b13b808e3dea6fc1e4006f7134e9f9">operations_research::sat::PresolveContext::keep_all_feasible_solutions</a></div><div class="ttdeci">bool keep_all_feasible_solutions</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00440">presolve_context.h:440</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a66810fcd97b5e9c5fd745226607cd7aa"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a66810fcd97b5e9c5fd745226607cd7aa">operations_research::sat::PresolveContext::AffineRelationDebugString</a></div><div class="ttdeci">std::string AffineRelationDebugString(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00935">presolve_context.cc:935</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a06f0856b91c0399720273b5da85ce280"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a06f0856b91c0399720273b5da85ce280">operations_research::sat::PresolveContext::StoreAbsRelation</a></div><div class="ttdeci">bool StoreAbsRelation(int target_ref, int ref)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00845">presolve_context.cc:845</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ad1cddf8749d0ce1686f1f428926cfb1d"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ad1cddf8749d0ce1686f1f428926cfb1d">operations_research::sat::PresolveContext::LiteralForExpressionMax</a></div><div class="ttdeci">int LiteralForExpressionMax(const LinearExpressionProto &expr) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00166">presolve_context.cc:166</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_bool_argument_proto_html_a9abd20cd5c98c0a4535d168a1c7bb18e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_bool_argument_proto.html#a9abd20cd5c98c0a4535d168a1c7bb18e">operations_research::sat::BoolArgumentProto::add_literals</a></div><div class="ttdeci">void add_literals(::PROTOBUF_NAMESPACE_ID::int32 value)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l06839">cp_model.pb.h:6839</a></div></div>
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<div class="ttc" id="namespaceoperations__research_html_aa64bf49d041052c7cb3f40f7496d7534"><div class="ttname"><a href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">operations_research::CapProd</a></div><div class="ttdeci">int64_t CapProd(int64_t x, int64_t y)</div><div class="ttdef"><b>Definition:</b> <a href="saturated__arithmetic_8h_source.html#l00233">saturated_arithmetic.h:233</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a5cc6a3ed49ec11734164c7ef646b15d5"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a5cc6a3ed49ec11734164c7ef646b15d5">operations_research::sat::PresolveContext::EndMin</a></div><div class="ttdeci">int64_t EndMin(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00229">presolve_context.cc:229</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_adff3b5f900c3d62132781fc25b54fb1a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#adff3b5f900c3d62132781fc25b54fb1a">operations_research::sat::PresolveContext::ExpressionIsAffineBoolean</a></div><div class="ttdeci">bool ExpressionIsAffineBoolean(const LinearExpressionProto &expr) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00160">presolve_context.cc:160</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_aee800549042643f64022ca6a1e554fa4"><div class="ttname"><a href="classoperations__research_1_1_domain.html#aee800549042643f64022ca6a1e554fa4">operations_research::Domain::SimplifyUsingImpliedDomain</a></div><div class="ttdeci">Domain SimplifyUsingImpliedDomain(const Domain &implied_domain) const</div><div class="ttdoc">Advanced usage.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00501">sorted_interval_list.cc:501</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_abef5f55c3278c137faca92b8e433f8ea"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#abef5f55c3278c137faca92b8e433f8ea">operations_research::sat::CpModelProto::variables_size</a></div><div class="ttdeci">int variables_size() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12036">cp_model.pb.h:12036</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_saved_variable_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_saved_variable.html">operations_research::sat::SavedVariable</a></div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00059">presolve_context.h:59</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_ad03d1e2f94c4ca4c8004ac5355e6504a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ad03d1e2f94c4ca4c8004ac5355e6504a">operations_research::sat::CpModelProto::add_variables</a></div><div class="ttdeci">::operations_research::sat::IntegerVariableProto * add_variables()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12061">cp_model.pb.h:12061</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_af7e074480c08f4887da40ca045624b6c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#af7e074480c08f4887da40ca045624b6c">operations_research::sat::PresolveContext::VariableIsOnlyUsedInEncodingAndMaybeInObjective</a></div><div class="ttdeci">bool VariableIsOnlyUsedInEncodingAndMaybeInObjective(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00330">presolve_context.cc:330</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_aa74ea8cd1b0767659f704b482d07c103"><div class="ttname"><a href="classoperations__research_1_1_domain.html#aa74ea8cd1b0767659f704b482d07c103">operations_research::Domain::Max</a></div><div class="ttdeci">int64_t Max() const</div><div class="ttdoc">Returns the max value of the domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00213">sorted_interval_list.cc:213</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_constraint_proto_html_aecb2bc94116e771000e5be7f8e3a7f6c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#aecb2bc94116e771000e5be7f8e3a7f6c">operations_research::sat::LinearConstraintProto::add_vars</a></div><div class="ttdeci">void add_vars(::PROTOBUF_NAMESPACE_ID::int32 value)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07264">cp_model.pb.h:7264</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a03a595b90f43d02186eb660424c6ca1b"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a03a595b90f43d02186eb660424c6ca1b">operations_research::Domain::AllValues</a></div><div class="ttdeci">static Domain AllValues()</div><div class="ttdoc">Returns the full domain Int64.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00136">sorted_interval_list.cc:136</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html_a96ffc785b7b2135c7980c985883ffdd3"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a96ffc785b7b2135c7980c985883ffdd3">operations_research::sat::CpObjectiveProto::offset</a></div><div class="ttdeci">double offset() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l11336">cp_model.pb.h:11336</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_constraint_proto_html_a2266c77ad6db8de45560357c1436e558"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#a2266c77ad6db8de45560357c1436e558">operations_research::sat::LinearConstraintProto::add_domain</a></div><div class="ttdeci">void add_domain(::PROTOBUF_NAMESPACE_ID::int64 value)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07358">cp_model.pb.h:7358</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a5f9c1ea2555cc36fcd716296e54ed17a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a5f9c1ea2555cc36fcd716296e54ed17a">operations_research::sat::PresolveContext::num_presolve_operations</a></div><div class="ttdeci">int64_t num_presolve_operations</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00447">presolve_context.h:447</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ab75a27c0aeda2de9c3957719b8196c36"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ab75a27c0aeda2de9c3957719b8196c36">operations_research::sat::PresolveContext::UpdateConstraintVariableUsage</a></div><div class="ttdeci">void UpdateConstraintVariableUsage(int c)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00476">presolve_context.cc:476</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a928c29f37c6ed9d5bba711f905783417"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a928c29f37c6ed9d5bba711f905783417">operations_research::sat::PresolveContext::working_model</a></div><div class="ttdeci">CpModelProto * working_model</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00432">presolve_context.h:432</a></div></div>
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<div class="ttc" id="constraint__solver_2table_8cc_html_a9293e4d29cac928301645070dd307683"><div class="ttname"><a href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a></div><div class="ttdeci">int64_t b</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_2table_8cc_source.html#l00047">constraint_solver/table.cc:47</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_af4847724208dd09ba3fea8b53132d197"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#af4847724208dd09ba3fea8b53132d197">operations_research::sat::PresolveContext::ExploitFixedDomain</a></div><div class="ttdeci">void ExploitFixedDomain(int var)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00622">presolve_context.cc:622</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_af188bac2776d4545aab9405f5c801cd8"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#af188bac2776d4545aab9405f5c801cd8">operations_research::sat::PresolveContext::CanBeUsedAsLiteral</a></div><div class="ttdeci">bool CanBeUsedAsLiteral(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00089">presolve_context.cc:89</a></div></div>
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<div class="ttc" id="namespaceoperations__research_html_aba32b1f1ee3ffb4194aa8af155f827cd"><div class="ttname"><a href="namespaceoperations__research.html#aba32b1f1ee3ffb4194aa8af155f827cd">operations_research::ProtobufDebugString</a></div><div class="ttdeci">std::string ProtobufDebugString(const P &message)</div><div class="ttdef"><b>Definition:</b> <a href="port_2proto__utils_8h_source.html#l00028">port/proto_utils.h:28</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ad0d1a630c07ba2321cf43d97a425bc30"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ad0d1a630c07ba2321cf43d97a425bc30">operations_research::sat::PresolveContext::SetLiteralToFalse</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool SetLiteralToFalse(int lit)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00410">presolve_context.cc:410</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a5e86fd5ce0fc653d355ab7303f373e00"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a5e86fd5ce0fc653d355ab7303f373e00">operations_research::sat::PresolveContext::DomainOf</a></div><div class="ttdeci">Domain DomainOf(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00339">presolve_context.cc:339</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a40432f5ffa1ea8255071161d96f598d1"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a40432f5ffa1ea8255071161d96f598d1">operations_research::sat::PresolveContext::LogInfo</a></div><div class="ttdeci">void LogInfo()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01734">presolve_context.cc:1734</a></div></div>
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<div class="ttc" id="mathutil_8h_html"><div class="ttname"><a href="mathutil_8h.html">mathutil.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html_ac7a72ff7bd5bde08ba00f944c5aa3168"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">operations_research::sat::CpObjectiveProto::vars</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int32 vars(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l11248">cp_model.pb.h:11248</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a67699a1a5830ef51dab6941449b02044"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a67699a1a5830ef51dab6941449b02044">operations_research::sat::PresolveContext::NewIntVar</a></div><div class="ttdeci">int NewIntVar(const Domain &domain)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00039">presolve_context.cc:39</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html_a30bb8cd86cbd9eae09b21783f28f8967"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#a30bb8cd86cbd9eae09b21783f28f8967">operations_research::sat::ConstraintProto::mutable_enforcement_literal</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::RepeatedField< ::PROTOBUF_NAMESPACE_ID::int32 > * mutable_enforcement_literal()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l09293">cp_model.pb.h:9293</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html_acdc90a25e531e4180c495f4ecf2aca2e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#acdc90a25e531e4180c495f4ecf2aca2e">operations_research::sat::ConstraintProto::enforcement_literal</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int32 enforcement_literal(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l09264">cp_model.pb.h:9264</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html_ae26e2a099b411b50dd1d4c6605837d0a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#ae26e2a099b411b50dd1d4c6605837d0a">operations_research::sat::ConstraintProto::mutable_bool_or</a></div><div class="ttdeci">::operations_research::sat::BoolArgumentProto * mutable_bool_or()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l09366">cp_model.pb.h:9366</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html_a6d1f941c5f8b326673ffd58eb9b1f0ab"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#a6d1f941c5f8b326673ffd58eb9b1f0ab">operations_research::sat::ConstraintProto::linear</a></div><div class="ttdeci">const ::operations_research::sat::LinearConstraintProto & linear() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l10223">cp_model.pb.h:10223</a></div></div>
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<div class="ttc" id="alldiff__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="classoperations__research_1_1sat_1_1_linear_constraint_proto_html_acf12f419c63aff52dc9ba6292586e9fc"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#acf12f419c63aff52dc9ba6292586e9fc">operations_research::sat::LinearConstraintProto::mutable_coeffs</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::RepeatedField< ::PROTOBUF_NAMESPACE_ID::int64 > * mutable_coeffs()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07329">cp_model.pb.h:7329</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_affine_relation_html_a2dfbb2acebf03bbb98cc1c54256fdead"><div class="ttname"><a href="classoperations__research_1_1_affine_relation.html#a2dfbb2acebf03bbb98cc1c54256fdead">operations_research::AffineRelation::IgnoreFromClassSize</a></div><div class="ttdeci">void IgnoreFromClassSize(int x)</div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00096">affine_relation.h:96</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a9925335988ccbe70e9150a9ce71b9952"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a9925335988ccbe70e9150a9ce71b9952">operations_research::sat::PresolveContext::HasVarValueEncoding</a></div><div class="ttdeci">bool HasVarValueEncoding(int ref, int64_t value, int *literal=nullptr)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01240">presolve_context.cc:1240</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a0000c1621c1de75511d17c9d14aae0e8"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a0000c1621c1de75511d17c9d14aae0e8">operations_research::sat::PresolveContext::VariableIsRemovable</a></div><div class="ttdeci">bool VariableIsRemovable(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00273">presolve_context.cc:273</a></div></div>
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<div class="ttc" id="map__util_8h_html"><div class="ttname"><a href="map__util_8h.html">map_util.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_a6a4544ca20489d70e302f5d6d374a012"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#a6a4544ca20489d70e302f5d6d374a012">operations_research::sat::CpModelProto::variables</a></div><div class="ttdeci">const ::operations_research::sat::IntegerVariableProto & variables(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12054">cp_model.pb.h:12054</a></div></div>
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<div class="ttc" id="cp__model__fz__solver_8cc_html_aed003f5eb5197bc586b7ef2c36a63da2"><div class="ttname"><a href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a></div><div class="ttdeci">CpModelProto proto</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__fz__solver_8cc_source.html#l00115">cp_model_fz_solver.cc:115</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ad6ab55f6b68272caeaf24ff0d69818a4"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ad6ab55f6b68272caeaf24ff0d69818a4">operations_research::sat::PresolveContext::EndMax</a></div><div class="ttdeci">int64_t EndMax(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00236">presolve_context.cc:236</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html">operations_research::sat::ConstraintProto</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l03865">cp_model.pb.h:3865</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a8cf21a67f7d81a800ff912239bb2db64"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a8cf21a67f7d81a800ff912239bb2db64">operations_research::Domain::Min</a></div><div class="ttdeci">int64_t Min() const</div><div class="ttdoc">Returns the min value of the domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00208">sorted_interval_list.cc:208</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_affine_relation_1_1_relation_html_a537e59662a0751edfbbd2a0079a794b4"><div class="ttname"><a href="structoperations__research_1_1_affine_relation_1_1_relation.html#a537e59662a0751edfbbd2a0079a794b4">operations_research::AffineRelation::Relation::coeff</a></div><div class="ttdeci">int64_t coeff</div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00078">affine_relation.h:78</a></div></div>
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<div class="ttc" id="namespaceoperations__research_html_a111f44b9b9cf67a8e8d83794ac9f5291"><div class="ttname"><a href="namespaceoperations__research.html#a111f44b9b9cf67a8e8d83794ac9f5291">operations_research::CapAdd</a></div><div class="ttdeci">int64_t CapAdd(int64_t x, int64_t y)</div><div class="ttdef"><b>Definition:</b> <a href="saturated__arithmetic_8h_source.html#l00126">saturated_arithmetic.h:126</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a1e3aa02e2d8300db5f1fc12f6b3228fa"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a1e3aa02e2d8300db5f1fc12f6b3228fa">operations_research::Domain::Negation</a></div><div class="ttdeci">Domain Negation() const</div><div class="ttdoc">Returns {x ∈ Int64, ∃ e ∈ D, x = -e}.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00276">sorted_interval_list.cc:276</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_expression_proto_html_a50faf32570e4f9cd348c797231fe35e0"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a50faf32570e4f9cd348c797231fe35e0">operations_research::sat::LinearExpressionProto::coeffs</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int64 coeffs(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l06997">cp_model.pb.h:6997</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_a46e69120fbd3b36e6960e096d23b66f0"><div class="ttname"><a href="base_2logging_8h.html#a46e69120fbd3b36e6960e096d23b66f0">DCHECK_NE</a></div><div class="ttdeci">#define DCHECK_NE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00887">base/logging.h:887</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ae3ad719e8a03c11498d2d0ab18558f95"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ae3ad719e8a03c11498d2d0ab18558f95">operations_research::sat::PresolveContext::SizeMax</a></div><div class="ttdeci">int64_t SizeMax(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00250">presolve_context.cc:250</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a24b22e509fdbdb4cd49ccec6a88c46ab"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a24b22e509fdbdb4cd49ccec6a88c46ab">operations_research::sat::PresolveContext::ClearStats</a></div><div class="ttdeci">void ClearStats()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00037">presolve_context.cc:37</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_af248c1021eda72d628e2f3537eb98ded"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#af248c1021eda72d628e2f3537eb98ded">operations_research::sat::PresolveContext::VariableWasRemoved</a></div><div class="ttdeci">bool VariableWasRemoved(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00312">presolve_context.cc:312</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ae58b8c61c87bd4625b0a5db975652151"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ae58b8c61c87bd4625b0a5db975652151">operations_research::sat::PresolveContext::ClearPrecedenceCache</a></div><div class="ttdeci">void ClearPrecedenceCache()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01730">presolve_context.cc:1730</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a00f995618e00d575372ff823a12553a9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a00f995618e00d575372ff823a12553a9">operations_research::sat::PresolveContext::MaxOf</a></div><div class="ttdeci">int64_t MaxOf(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00118">presolve_context.cc:118</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a36794cf424ca2d69bc4774437a61a88e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a36794cf424ca2d69bc4774437a61a88e">operations_research::sat::PresolveContext::WriteObjectiveToProto</a></div><div class="ttdeci">void WriteObjectiveToProto() const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01641">presolve_context.cc:1641</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a5c2f01871b9baa2bc0dc556803c5a1ad"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a5c2f01871b9baa2bc0dc556803c5a1ad">operations_research::sat::PresolveContext::PropagateAffineRelation</a></div><div class="ttdeci">bool PropagateAffineRelation(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00644">presolve_context.cc:644</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_constraint_proto_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html">operations_research::sat::LinearConstraintProto</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l01264">cp_model.pb.h:1264</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_ae4db23f10f5d4aad6d735f5a74cd6f8c"><div class="ttname"><a href="base_2logging_8h.html#ae4db23f10f5d4aad6d735f5a74cd6f8c">CHECK_LE</a></div><div class="ttdeci">#define CHECK_LE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00700">base/logging.h:700</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_affine_relation_1_1_relation_html"><div class="ttname"><a href="structoperations__research_1_1_affine_relation_1_1_relation.html">operations_research::AffineRelation::Relation</a></div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00076">affine_relation.h:76</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html_ad653c55b371ae98444295965c6622ddb"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#ad653c55b371ae98444295965c6622ddb">operations_research::sat::ConstraintProto::mutable_linear</a></div><div class="ttdeci">::operations_research::sat::LinearConstraintProto * mutable_linear()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l10254">cp_model.pb.h:10254</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a02a3444590b38a8e99aba5eb8a1ca9d9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a02a3444590b38a8e99aba5eb8a1ca9d9">operations_research::sat::PresolveContext::AddToObjectiveOffset</a></div><div class="ttdeci">void AddToObjectiveOffset(int64_t value)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01503">presolve_context.cc:1503</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_afce66afa8ae7776a449bba7313ea3559"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#afce66afa8ae7776a449bba7313ea3559">operations_research::sat::CpModelProto::constraints</a></div><div class="ttdeci">const ::operations_research::sat::ConstraintProto & constraints(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12094">cp_model.pb.h:12094</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_ae0803b8198728cd4f6e58498d9c60091"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">operations_research::sat::NegatedRef</a></div><div class="ttdeci">int NegatedRef(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00034">cp_model_utils.h:34</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_math_util_html_ae94db7b2fa1d8e1b3c1dc6c683191609"><div class="ttname"><a href="classoperations__research_1_1_math_util.html#ae94db7b2fa1d8e1b3c1dc6c683191609">operations_research::MathUtil::GCD64</a></div><div class="ttdeci">static int64_t GCD64(int64_t x, int64_t y)</div><div class="ttdef"><b>Definition:</b> <a href="mathutil_8h_source.html#l00107">mathutil.h:107</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_ac01de597eeeff5521a8bf54568bf1373"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ac01de597eeeff5521a8bf54568bf1373">operations_research::sat::CpModelProto::add_constraints</a></div><div class="ttdeci">::operations_research::sat::ConstraintProto * add_constraints()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12101">cp_model.pb.h:12101</a></div></div>
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<div class="ttc" id="namespacegtl_html_aae28e97bd1fa93cb0032642550da7455"><div class="ttname"><a href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a></div><div class="ttdeci">bool ContainsKey(const Collection &collection, const Key &key)</div><div class="ttdef"><b>Definition:</b> <a href="map__util_8h_source.html#l00200">map_util.h:200</a></div></div>
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<div class="ttc" id="namespacegtl_html_abce27d097bc5680207b294bdad75f59f"><div class="ttname"><a href="namespacegtl.html#abce27d097bc5680207b294bdad75f59f">gtl::FindOrDie</a></div><div class="ttdeci">const Collection::value_type::second_type & FindOrDie(const Collection &collection, const typename Collection::value_type::first_type &key)</div><div class="ttdef"><b>Definition:</b> <a href="map__util_8h_source.html#l00206">map_util.h:206</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_a2787b866382b560920d55ce5cf129920"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#a2787b866382b560920d55ce5cf129920">operations_research::sat::CpModelProto::objective</a></div><div class="ttdeci">const ::operations_research::sat::CpObjectiveProto & objective() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12130">cp_model.pb.h:12130</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_integer_variable_proto_html_a2266c77ad6db8de45560357c1436e558"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_variable_proto.html#a2266c77ad6db8de45560357c1436e558">operations_research::sat::IntegerVariableProto::add_domain</a></div><div class="ttdeci">void add_domain(::PROTOBUF_NAMESPACE_ID::int64 value)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l06788">cp_model.pb.h:6788</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html_a50faf32570e4f9cd348c797231fe35e0"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a50faf32570e4f9cd348c797231fe35e0">operations_research::sat::CpObjectiveProto::coeffs</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int64 coeffs(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l11295">cp_model.pb.h:11295</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a6939dc7b9db01cf3deff10405e260461"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a6939dc7b9db01cf3deff10405e260461">operations_research::sat::PresolveContext::MarkVariableAsRemoved</a></div><div class="ttdeci">void MarkVariableAsRemoved(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00305">presolve_context.cc:305</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a47714f887512a3d7acebfcb4a348291a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a47714f887512a3d7acebfcb4a348291a">operations_research::sat::PresolveContext::var_to_ub_only_constraints</a></div><div class="ttdeci">std::vector< absl::flat_hash_set< int > > var_to_ub_only_constraints</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00429">presolve_context.h:429</a></div></div>
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<div class="ttc" id="pack_8cc_html_a750b5d744c39a06bfb13e6eb010e35d0"><div class="ttname"><a href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a></div><div class="ttdeci">int index</div><div class="ttdef"><b>Definition:</b> <a href="pack_8cc_source.html#l00509">pack.cc:509</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a77e37831a01ff737a7b5bd7e12c2ecf7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a77e37831a01ff737a7b5bd7e12c2ecf7">operations_research::sat::PresolveContext::DomainIsEmpty</a></div><div class="ttdeci">bool DomainIsEmpty(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00079">presolve_context.cc:79</a></div></div>
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<div class="ttc" id="port_2proto__utils_8h_html"><div class="ttname"><a href="port_2proto__utils_8h.html">proto_utils.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_abd2c59687cc53dda333d0f18c457389b"><div class="ttname"><a href="classoperations__research_1_1_domain.html#abd2c59687cc53dda333d0f18c457389b">operations_research::Domain::RelaxIfTooComplex</a></div><div class="ttdeci">Domain RelaxIfTooComplex() const</div><div class="ttdoc">If NumIntervals() is too large, this return a superset of the domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00368">sorted_interval_list.cc:368</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a20097880105b02917a50dd5d97b80e55"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a20097880105b02917a50dd5d97b80e55">operations_research::sat::PresolveContext::IntersectDomainWith</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool IntersectDomainWith(int ref, const Domain &domain, bool *domain_modified=nullptr)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00356">presolve_context.cc:356</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a835826c4c5129b74553042a357a721ff"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a835826c4c5129b74553042a357a721ff">operations_research::Domain::IntersectionWith</a></div><div class="ttdeci">Domain IntersectionWith(const Domain &domain) const</div><div class="ttdoc">Returns the intersection of D and domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00297">sorted_interval_list.cc:297</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a63a708c626b59b4504ddb879496c894e"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a63a708c626b59b4504ddb879496c894e">operations_research::Domain::MultiplicationBy</a></div><div class="ttdeci">Domain MultiplicationBy(int64_t coeff, bool *exact=nullptr) const</div><div class="ttdoc">Returns {x ∈ Int64, ∃ e ∈ D, x = e * coeff}.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00376">sorted_interval_list.cc:376</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_affine_relation_1_1_relation_html_ae25fb5067bd6b3b1b319efc61685a98f"><div class="ttname"><a href="structoperations__research_1_1_affine_relation_1_1_relation.html#ae25fb5067bd6b3b1b319efc61685a98f">operations_research::AffineRelation::Relation::offset</a></div><div class="ttdeci">int64_t offset</div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00079">affine_relation.h:79</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_aeaf0da781ca9b370d96b7fbd3f74266a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#aeaf0da781ca9b370d96b7fbd3f74266a">operations_research::sat::CpModelProto::constraints_size</a></div><div class="ttdeci">int constraints_size() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12076">cp_model.pb.h:12076</a></div></div>
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<div class="ttc" id="presolve__context_8h_html"><div class="ttname"><a href="presolve__context_8h.html">presolve_context.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a34e2cd343e0dfb06af9f67df8c4c3502"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a34e2cd343e0dfb06af9f67df8c4c3502">operations_research::sat::PresolveContext::VariableWithCostIsUniqueAndRemovable</a></div><div class="ttdeci">bool VariableWithCostIsUniqueAndRemovable(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00290">presolve_context.cc:290</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a5aa53538ba8adaa0bea1c3c0727425b0"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a5aa53538ba8adaa0bea1c3c0727425b0">operations_research::sat::PresolveContext::NotifyThatModelIsUnsat</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool NotifyThatModelIsUnsat(const std::string &message="")</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00176">presolve_context.h:176</a></div></div>
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<div class="ttc" id="saturated__arithmetic_8h_html"><div class="ttname"><a href="saturated__arithmetic_8h.html">saturated_arithmetic.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_affine_relation_html_abc96755c0de80a81fd2730d3f2e85523"><div class="ttname"><a href="classoperations__research_1_1_affine_relation.html#abc96755c0de80a81fd2730d3f2e85523">operations_research::AffineRelation::ClassSize</a></div><div class="ttdeci">int ClassSize(int x) const</div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00110">affine_relation.h:110</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_a7c0ce053b28d53aa4eaf3eb7fb71663b"><div class="ttname"><a href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a></div><div class="ttdeci">#define CHECK_EQ(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00698">base/logging.h:698</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_a217ba4c51953c701a68d6572d79801f1"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a217ba4c51953c701a68d6572d79801f1">operations_research::sat::UsedIntervals</a></div><div class="ttdeci">std::vector< int > UsedIntervals(const ConstraintProto &ct)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8cc_source.html#l00499">cp_model_utils.cc:499</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a4bf47c6b5724e9a3a7df78486f9bdc41"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a4bf47c6b5724e9a3a7df78486f9bdc41">operations_research::sat::PresolveContext::SubstituteVariableInObjective</a></div><div class="ttdeci">bool SubstituteVariableInObjective(int var_in_equality, int64_t coeff_in_equality, const ConstraintProto &equality, std::vector< int > *new_vars_in_objective=nullptr)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01509">presolve_context.cc:1509</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a4f9af4a46ee07931e3e5e50f6ddfb8ad"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a4f9af4a46ee07931e3e5e50f6ddfb8ad">operations_research::Domain::AdditionWith</a></div><div class="ttdeci">Domain AdditionWith(const Domain &domain) const</div><div class="ttdoc">Returns {x ∈ Int64, ∃ a ∈ D, ∃ b ∈ domain, x = a + b}.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00347">sorted_interval_list.cc:347</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a1f922def1b57974333f228818cd04e68"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a1f922def1b57974333f228818cd04e68">operations_research::Domain::IsIncludedIn</a></div><div class="ttdeci">bool IsIncludedIn(const Domain &domain) const</div><div class="ttdoc">Returns true iff D is included in the given domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00247">sorted_interval_list.cc:247</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a13c8d5cf71bf7735663c489f5493d036"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a13c8d5cf71bf7735663c489f5493d036">operations_research::sat::PresolveContext::ModelIsExpanded</a></div><div class="ttdeci">bool ModelIsExpanded() const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00397">presolve_context.h:397</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_integer_variable_proto_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_variable_proto.html">operations_research::sat::IntegerVariableProto</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l00268">cp_model.pb.h:268</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a9dd01897679ba54fca524a3b0b7d5612"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a9dd01897679ba54fca524a3b0b7d5612">operations_research::sat::PresolveContext::DomainContains</a></div><div class="ttdeci">bool DomainContains(int ref, int64_t value) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00349">presolve_context.cc:349</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_ae17f8119c108cf3070bad3449c7e0006"><div class="ttname"><a href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a></div><div class="ttdeci">#define DCHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00885">base/logging.h:885</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a890f923209473cf55ac002d1b14bd9e2"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a890f923209473cf55ac002d1b14bd9e2">operations_research::sat::PresolveContext::LiteralIsTrue</a></div><div class="ttdeci">bool LiteralIsTrue(int lit) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00094">presolve_context.cc:94</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html"><div class="ttname"><a href="classoperations__research_1_1_domain.html">operations_research::Domain</a></div><div class="ttdoc">We call domain any subset of Int64 = [kint64min, kint64max].</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8h_source.html#l00081">sorted_interval_list.h:81</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_saved_variable_html_adf2db0610413d540ca6c4e4f1cce5fd6"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_saved_variable.html#adf2db0610413d540ca6c4e4f1cce5fd6">operations_research::sat::SavedVariable::Get</a></div><div class="ttdeci">int Get(PresolveContext *context) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00033">presolve_context.cc:33</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a1aadaad9b8af16ab5a208c682e2e1717"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a1aadaad9b8af16ab5a208c682e2e1717">operations_research::sat::PresolveContext::AddImplication</a></div><div class="ttdeci">void AddImplication(int a, int b)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00060">presolve_context.cc:60</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_a901c19b12842f8af153e588a689a90b5"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">operations_research::sat::FillDomainInProto</a></div><div class="ttdeci">void FillDomainInProto(const Domain &domain, ProtoWithDomain *proto)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00093">cp_model_utils.h:93</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a52bccf051bec19d96584096844070eaa"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a52bccf051bec19d96584096844070eaa">operations_research::sat::PresolveContext::UpdateNewConstraintsVariableUsage</a></div><div class="ttdeci">void UpdateNewConstraintsVariableUsage()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00514">presolve_context.cc:514</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a83cb3816d487395542f17a17776b9a1a"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a83cb3816d487395542f17a17776b9a1a">operations_research::sat::PresolveContext::StartMax</a></div><div class="ttdeci">int64_t StartMax(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00222">presolve_context.cc:222</a></div></div>
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<div class="ttc" id="preprocessor_8cc_html_abcdbe46fb8451a69d42c17abdb920021"><div class="ttname"><a href="preprocessor_8cc.html#abcdbe46fb8451a69d42c17abdb920021">representative</a></div><div class="ttdeci">ColIndex representative</div><div class="ttdef"><b>Definition:</b> <a href="preprocessor_8cc_source.html#l00465">preprocessor.cc:465</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a22c6c2f121586b5d76feb4b0e536dfde"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a22c6c2f121586b5d76feb4b0e536dfde">operations_research::Domain::Contains</a></div><div class="ttdeci">bool Contains(int64_t value) const</div><div class="ttdoc">Returns true iff value is in Domain.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00236">sorted_interval_list.cc:236</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_logger_html_a9492cb97f5ec0ecbce0b5ef1b085738b"><div class="ttname"><a href="classoperations__research_1_1_solver_logger.html#a9492cb97f5ec0ecbce0b5ef1b085738b">operations_research::SolverLogger::LoggingIsEnabled</a></div><div class="ttdeci">bool LoggingIsEnabled() const</div><div class="ttdef"><b>Definition:</b> <a href="util_2logging_8h_source.html#l00042">util/logging.h:42</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_ae89df3243bbb8341130c7b3f44145ea0"><div class="ttname"><a href="base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0">DCHECK_EQ</a></div><div class="ttdeci">#define DCHECK_EQ(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00886">base/logging.h:886</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ae7450e5b3b9b22663ec7e1fe0d82b6b9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ae7450e5b3b9b22663ec7e1fe0d82b6b9">operations_research::sat::PresolveContext::DomainSuperSetOf</a></div><div class="ttdeci">Domain DomainSuperSetOf(const LinearExpressionProto &expr) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00150">presolve_context.cc:150</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html">operations_research::sat::PresolveContext</a></div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00071">presolve_context.h:71</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_expression_proto_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_expression_proto.html">operations_research::sat::LinearExpressionProto</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l00754">cp_model.pb.h:754</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a23aa815e8a7a860998c4d35760fa087e"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a23aa815e8a7a860998c4d35760fa087e">operations_research::sat::PresolveContext::var_to_lb_only_constraints</a></div><div class="ttdeci">std::vector< absl::flat_hash_set< int > > var_to_lb_only_constraints</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00430">presolve_context.h:430</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html_a76c521af56ab0e96eb06deeb679f46f7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a76c521af56ab0e96eb06deeb679f46f7">operations_research::sat::CpObjectiveProto::vars_size</a></div><div class="ttdeci">int vars_size() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l11239">cp_model.pb.h:11239</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_af0280b2bda95804c4166638e7b490ce9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#af0280b2bda95804c4166638e7b490ce9">operations_research::sat::PresolveContext::AddImplyInDomain</a></div><div class="ttdeci">void AddImplyInDomain(int b, int x, const Domain &domain)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00067">presolve_context.cc:67</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_adc37a02104d979e9943fadfd2e209686"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#adc37a02104d979e9943fadfd2e209686">operations_research::sat::PresolveContext::GetOrCreateReifiedPrecedenceLiteral</a></div><div class="ttdeci">int GetOrCreateReifiedPrecedenceLiteral(int time_i, int time_j, int active_i, int active_j)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01661">presolve_context.cc:1661</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a6387e91b098c081f059892e1346a29ed"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a6387e91b098c081f059892e1346a29ed">operations_research::sat::PresolveContext::GetVariableRepresentative</a></div><div class="ttdeci">int GetVariableRepresentative(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00908">presolve_context.cc:908</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_afdf0f5e877efe4e1d003300f0ce1234f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#afdf0f5e877efe4e1d003300f0ce1234f">operations_research::sat::PresolveContext::StoreLiteralImpliesVarEqValue</a></div><div class="ttdeci">bool StoreLiteralImpliesVarEqValue(int literal, int var, int64_t value)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01224">presolve_context.cc:1224</a></div></div>
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<div class="ttc" id="namespaceoperations__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="classoperations__research_1_1sat_1_1_presolve_context_html_abb6eb29f56c3a33b8ae1b74b08b755c2"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#abb6eb29f56c3a33b8ae1b74b08b755c2">operations_research::sat::PresolveContext::IsFixed</a></div><div class="ttdeci">bool IsFixed(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00083">presolve_context.cc:83</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_model_proto_html_ad3badc7aa3d94e81e0126edbfa452fda"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#ad3badc7aa3d94e81e0126edbfa452fda">operations_research::sat::CpModelProto::mutable_objective</a></div><div class="ttdeci">::operations_research::sat::CpObjectiveProto * mutable_objective()</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l12177">cp_model.pb.h:12177</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_aef0a687ec05a3e5dd7aa78745e9fb382"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#aef0a687ec05a3e5dd7aa78745e9fb382">operations_research::sat::PresolveContext::SizeMin</a></div><div class="ttdeci">int64_t SizeMin(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00243">presolve_context.cc:243</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_ae42cae46d8792621471dd137bf9bb3cc"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#ae42cae46d8792621471dd137bf9bb3cc">operations_research::sat::PresolveContext::ExploitExactlyOneInObjective</a></div><div class="ttdeci">bool ExploitExactlyOneInObjective(absl::Span< const int > exactly_one)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01592">presolve_context.cc:1592</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a9da1edd6532c2c2b0c09544eade57805"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a9da1edd6532c2c2b0c09544eade57805">operations_research::sat::PresolveContext::IntervalIsConstant</a></div><div class="ttdeci">bool IntervalIsConstant(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00173">presolve_context.cc:173</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_constraint_proto_html_a2ec4b0b15e694caaaa842243694c51f5"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#a2ec4b0b15e694caaaa842243694c51f5">operations_research::sat::ConstraintProto::interval</a></div><div class="ttdeci">const ::operations_research::sat::IntervalConstraintProto & interval() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l10889">cp_model.pb.h:10889</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_aabb328e6969888226a7a69a972e22c56"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#aabb328e6969888226a7a69a972e22c56">operations_research::sat::PresolveContext::RemoveAllVariablesFromAffineRelationConstraint</a></div><div class="ttdeci">void RemoveAllVariablesFromAffineRelationConstraint()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00666">presolve_context.cc:666</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_acb5ca2d891a58b6b9e55eee532c2557c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#acb5ca2d891a58b6b9e55eee532c2557c">operations_research::sat::PresolveContext::IntervalDebugString</a></div><div class="ttdeci">std::string IntervalDebugString(int ct_ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00189">presolve_context.cc:189</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_expression_proto_html_ac7a72ff7bd5bde08ba00f944c5aa3168"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">operations_research::sat::LinearExpressionProto::vars</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int32 vars(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l06950">cp_model.pb.h:6950</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_a217338425de4389014563f1f24331713"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">operations_research::sat::RefIsPositive</a></div><div class="ttdeci">bool RefIsPositive(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00036">cp_model_utils.h:36</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_aca25bc3ffa54b3f2668c6eeddffd8d1d"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#aca25bc3ffa54b3f2668c6eeddffd8d1d">operations_research::sat::kObjectiveConstraint</a></div><div class="ttdeci">constexpr int kObjectiveConstraint</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00038">presolve_context.h:38</a></div></div>
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<div class="ttc" id="expr__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="classoperations__research_1_1sat_1_1_interval_constraint_proto_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_interval_constraint_proto.html">operations_research::sat::IntervalConstraintProto</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l01642">cp_model.pb.h:1642</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a9f3443b281c705edf1779f746637ad9b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a9f3443b281c705edf1779f746637ad9b">operations_research::sat::PresolveContext::LiteralIsFalse</a></div><div class="ttdeci">bool LiteralIsFalse(int lit) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00103">presolve_context.cc:103</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_affine_relation_html_a3fd7611957e9eaebe9d43c23705e720b"><div class="ttname"><a href="classoperations__research_1_1_affine_relation.html#a3fd7611957e9eaebe9d43c23705e720b">operations_research::AffineRelation::TryAdd</a></div><div class="ttdeci">bool TryAdd(int x, int y, int64_t coeff, int64_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00167">affine_relation.h:167</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a37ed950834f3f3b427a707631fd745f4"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a37ed950834f3f3b427a707631fd745f4">operations_research::sat::PresolveContext::SetLiteralToTrue</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool SetLiteralToTrue(int lit)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00416">presolve_context.cc:416</a></div></div>
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<div class="ttc" id="vlog__is__on_8h_html_a956152cad330225654d128f35c00efce"><div class="ttname"><a href="vlog__is__on_8h.html#a956152cad330225654d128f35c00efce">VLOG_IS_ON</a></div><div class="ttdeci">#define VLOG_IS_ON(verboselevel)</div><div class="ttdef"><b>Definition:</b> <a href="vlog__is__on_8h_source.html#l00041">vlog_is_on.h:41</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a4f9423ff72ed20e477fff16e8887df96"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a4f9423ff72ed20e477fff16e8887df96">operations_research::sat::PresolveContext::GetOrCreateVarValueEncoding</a></div><div class="ttdeci">int GetOrCreateVarValueEncoding(int ref, int64_t value)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01256">presolve_context.cc:1256</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_aaed725b098e5d931862a74b496564e37"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#aaed725b098e5d931862a74b496564e37">operations_research::sat::PresolveContext::RemoveVariableFromObjective</a></div><div class="ttdeci">void RemoveVariableFromObjective(int var)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01487">presolve_context.cc:1487</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_constraint_proto_html_ac7a72ff7bd5bde08ba00f944c5aa3168"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_constraint_proto.html#ac7a72ff7bd5bde08ba00f944c5aa3168">operations_research::sat::LinearConstraintProto::vars</a></div><div class="ttdeci">::PROTOBUF_NAMESPACE_ID::int32 vars(int index) const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l07253">cp_model.pb.h:7253</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_acb73a5ab7e240d5f93938262f2d8b826"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#acb73a5ab7e240d5f93938262f2d8b826">operations_research::sat::PresolveContext::NumEquivRelations</a></div><div class="ttdeci">int NumEquivRelations() const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00245">presolve_context.h:245</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_affine_relation_1_1_relation_html_af5eb1e0745f18d589b9c552215bef515"><div class="ttname"><a href="structoperations__research_1_1_affine_relation_1_1_relation.html#af5eb1e0745f18d589b9c552215bef515">operations_research::AffineRelation::Relation::representative</a></div><div class="ttdeci">int representative</div><div class="ttdef"><b>Definition:</b> <a href="affine__relation_8h_source.html#l00077">affine_relation.h:77</a></div></div>
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<div class="ttc" id="gurobi__interface_8cc_html_a5f287b83a753915ae862fed64f8640a6"><div class="ttname"><a href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a></div><div class="ttdeci">GurobiMPCallbackContext * context</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__interface_8cc_source.html#l00513">gurobi_interface.cc:513</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_abd6f7af5d9b31061a7b03ec44488ea4c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#abd6f7af5d9b31061a7b03ec44488ea4c">operations_research::sat::PresolveContext::NumAffineRelations</a></div><div class="ttdeci">int NumAffineRelations() const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00244">presolve_context.h:244</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_a1abf1e971476b61662a7ab2c5d88966c"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a1abf1e971476b61662a7ab2c5d88966c">operations_research::sat::PresolveContext::InsertVarValueEncoding</a></div><div class="ttdeci">void InsertVarValueEncoding(int literal, int ref, int64_t value)</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01216">presolve_context.cc:1216</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_cp_objective_proto_html_a9e32504c3f1bddb0f25f1386ecf7987b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_objective_proto.html#a9e32504c3f1bddb0f25f1386ecf7987b">operations_research::sat::CpObjectiveProto::scaling_factor</a></div><div class="ttdeci">double scaling_factor() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l11356">cp_model.pb.h:11356</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_ab1240060466ba48a36a4b36379bce26a"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#ab1240060466ba48a36a4b36379bce26a">operations_research::sat::ReadDomainFromProto</a></div><div class="ttdeci">Domain ReadDomainFromProto(const ProtoWithDomain &proto)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00104">cp_model_utils.h:104</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_saved_literal_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_saved_literal.html">operations_research::sat::SavedLiteral</a></div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8h_source.html#l00048">presolve_context.h:48</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_domain_html_a8e12342fc420701fbffd97025421575a"><div class="ttname"><a href="classoperations__research_1_1_domain.html#a8e12342fc420701fbffd97025421575a">operations_research::Domain::IsEmpty</a></div><div class="ttdeci">bool IsEmpty() const</div><div class="ttdoc">Returns true if this is the empty set.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00192">sorted_interval_list.cc:192</a></div></div>
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<div class="ttc" id="demon__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="optimization_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#l00085">optimization.cc:85</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_aaddc5f58e8a40a5a308531949153f814"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#aaddc5f58e8a40a5a308531949153f814">operations_research::sat::PresolveContext::GetAffineRelation</a></div><div class="ttdeci">AffineRelation::Relation GetAffineRelation(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00918">presolve_context.cc:918</a></div></div>
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<div class="ttc" id="resource_8cc_html_af92a8383a05fdf586a52263d358f5ada"><div class="ttname"><a href="resource_8cc.html#af92a8383a05fdf586a52263d358f5ada">interval</a></div><div class="ttdeci">IntervalVar * interval</div><div class="ttdef"><b>Definition:</b> <a href="resource_8cc_source.html#l00100">resource.cc:100</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_ab25e01a2942b821d66371fc68d53f2eb"><div class="ttname"><a href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a></div><div class="ttdeci">#define CHECK_NE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00699">base/logging.h:699</a></div></div>
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<div class="ttc" id="demon__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="classoperations__research_1_1sat_1_1_presolve_context_html_a37770bda4577c8ad121d77d99a63cb0f"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#a37770bda4577c8ad121d77d99a63cb0f">operations_research::sat::PresolveContext::GetLiteralRepresentative</a></div><div class="ttdeci">int GetLiteralRepresentative(int ref) const</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l00879">presolve_context.cc:879</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_ab62f5ed8f2d48e29802be0cbbcd1359a"><div class="ttname"><a href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a></div><div class="ttdeci">#define DCHECK_LT(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00889">base/logging.h:889</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_linear_expression_proto_html_a76c521af56ab0e96eb06deeb679f46f7"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_linear_expression_proto.html#a76c521af56ab0e96eb06deeb679f46f7">operations_research::sat::LinearExpressionProto::vars_size</a></div><div class="ttdeci">int vars_size() const</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l06941">cp_model.pb.h:6941</a></div></div>
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<div class="ttc" id="classoperations__research_1_1sat_1_1_presolve_context_html_aa62da782b2270ca293531a0aea153fba"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_presolve_context.html#aa62da782b2270ca293531a0aea153fba">operations_research::sat::PresolveContext::CanonicalizeObjective</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT bool CanonicalizeObjective()</div><div class="ttdef"><b>Definition:</b> <a href="presolve__context_8cc_source.html#l01364">presolve_context.cc:1364</a></div></div>
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<div class="ttc" id="log__severity_8h_html_ab4a2cbab234914b320b7fae11b6e8cb9"><div class="ttname"><a href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a></div><div class="ttdeci">const int INFO</div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00031">log_severity.h:31</a></div></div>
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<div class="ttc" id="constraint__solver_2table_8cc_html_acb18315d548212835cd8ed4287e6c0b6"><div class="ttname"><a href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a></div><div class="ttdeci">int64_t a</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_2table_8cc_source.html#l00046">constraint_solver/table.cc:46</a></div></div>
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