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165 lines
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<a href="cp__model__expand_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="cp__model__expand_8h.html">ortools/sat/cp_model_expand.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 <map></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include "absl/container/flat_hash_map.h"</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "<a class="code" href="hash_8h.html">ortools/base/hash.h</a>"</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</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="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="stl__util_8h.html">ortools/base/stl_util.h</a>"</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</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="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="cp__model_8pb_8h.html">ortools/sat/cp_model.pb.h</a>"</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="cp__model__utils_8h.html">ortools/sat/cp_model_utils.h</a>"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</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="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="sat_2util_8h.html">ortools/sat/util.h</a>"</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</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="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="sorted__interval__list_8h.html">ortools/util/sorted_interval_list.h</a>"</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>sat {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">namespace </span>{</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keywordtype">void</span> AddXEqualYOrXEqualZero(<span class="keywordtype">int</span> x_eq_y, <span class="keywordtype">int</span> x, <span class="keywordtype">int</span> y,</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  ConstraintProto* equality = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints();</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  equality->add_enforcement_literal(x_eq_y);</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  equality->mutable_linear()->add_vars(x);</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  equality->mutable_linear()->add_coeffs(1);</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  equality->mutable_linear()->add_vars(y);</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  equality->mutable_linear()->add_coeffs(-1);</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  equality->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  equality->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(x_eq_y), x, {0, 0});</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> }</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keywordtype">void</span> ExpandReservoir(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->reservoir().min_level() > <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->reservoir().max_level()) {</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Empty level domain in reservoir constraint."</span>;</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> (<span class="keywordtype">void</span>)<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NotifyThatModelIsUnsat();</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> </div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">const</span> ReservoirConstraintProto& reservoir = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->reservoir();</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_events = reservoir.times_size();</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> true_literal = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateConstantVar(1);</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">const</span> <span class="keyword">auto</span> is_active_literal = [&reservoir, true_literal](<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (reservoir.actives_size() == 0) <span class="keywordflow">return</span> true_literal;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">return</span> reservoir.actives(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</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> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span> num_positives = 0;</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">int</span> num_negatives = 0;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t <a class="code" href="resource_8cc.html#a29fb0dd9484d890b12b280c41c150e20">demand</a> : reservoir.demands()) {</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#a29fb0dd9484d890b12b280c41c150e20">demand</a> > 0) {</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  num_positives++;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#a29fb0dd9484d890b12b280c41c150e20">demand</a> < 0) {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  num_negatives++;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  }</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">if</span> (num_positives > 0 && num_negatives > 0) {</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// Creates Boolean variables equivalent to (start[i] <= start[j]) i != j</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_events - 1; ++i) {</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> active_i = is_active_literal(i);</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->LiteralIsFalse(active_i)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> time_i = reservoir.times(i);</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = i + 1; j < num_events; ++j) {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> active_j = is_active_literal(j);</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->LiteralIsFalse(active_j)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> time_j = reservoir.times(j);</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> i_lesseq_j = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateReifiedPrecedenceLiteral(</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  time_i, time_j, active_i, active_j);</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->mutable_variables(i_lesseq_j)</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  ->set_name(absl::StrCat(i, <span class="stringliteral">" before "</span>, j));</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> j_lesseq_i = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateReifiedPrecedenceLiteral(</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  time_j, time_i, active_j, active_i);</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->mutable_variables(j_lesseq_i)</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ->set_name(absl::StrCat(j, <span class="stringliteral">" before "</span>, i));</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// Constrains the running level to be consistent at all times.</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// For this we only add a constraint at the time a given demand</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// take place. We also have a constraint for time zero if needed</span></div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// (added below).</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_events; ++i) {</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> active_i = is_active_literal(i);</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->LiteralIsFalse(active_i)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> time_i = reservoir.times(i);</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// Accumulates demands of all predecessors.</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  ConstraintProto* <span class="keyword">const</span> level = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints();</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  level->add_enforcement_literal(active_i);</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> </div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// Add contributions from previous events.</span></div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < num_events; ++j) {</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> (i == j) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> active_j = is_active_literal(j);</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->LiteralIsFalse(active_j)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> time_j = reservoir.times(j);</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  level->mutable_linear()->add_vars(</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateReifiedPrecedenceLiteral(time_j, time_i,</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  active_j, active_i));</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  level->mutable_linear()->add_coeffs(reservoir.demands(j));</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// Accounts for own demand in the domain of the sum.</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">const</span> int64_t demand_i = reservoir.demands(i);</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  level->mutable_linear()->add_domain(</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <a class="code" href="namespaceoperations__research.html#a4a43d435871f16c321861fa5de32df82">CapSub</a>(reservoir.min_level(), demand_i));</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  level->mutable_linear()->add_domain(</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <a class="code" href="namespaceoperations__research.html#a4a43d435871f16c321861fa5de32df82">CapSub</a>(reservoir.max_level(), demand_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>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="comment">// If all demands have the same sign, we do not care about the order, just</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="comment">// the sum.</span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">auto</span>* <span class="keyword">const</span> sum =</div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_linear();</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_events; ++i) {</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  sum->add_vars(is_active_literal(i));</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  sum->add_coeffs(reservoir.demands(i));</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  sum->add_domain(reservoir.min_level());</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  sum->add_domain(reservoir.max_level());</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</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>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"reservoir: expanded"</span>);</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"> 150</span> <span class="comment">// a_ref spans across 0, b_ref does not.</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="keywordtype">void</span> ExpandIntDivWithOneAcrossZero(<span class="keywordtype">int</span> a_ref, <span class="keywordtype">int</span> b_ref, <span class="keywordtype">int</span> div_ref,</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <a class="code" href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(a_ref), 0);</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <a class="code" href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(a_ref), 0);</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <a class="code" href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(b_ref), 0);</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="comment">// Split the domain of a in two, controlled by a new literal.</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> a_is_positive = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(a_is_positive, a_ref,</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  {0, <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<int64_t>::max</a>()});</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(a_is_positive), a_ref,</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>(), -1});</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({0, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(a_ref)});</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  AddXEqualYOrXEqualZero(a_is_positive, pos_a_ref, a_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(a_ref), 0});</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  AddXEqualYOrXEqualZero(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(a_is_positive), neg_a_ref, a_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">// Create div with the positive part of a_ref.</span></div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_a_div = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({0, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(div_ref)});</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  IntegerArgumentProto* pos_div =</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_int_div();</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  pos_div->set_target(pos_a_div);</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  pos_div->add_vars(pos_a_ref);</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  pos_div->add_vars(b_ref);</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">// Create div with the negative part of a_ref.</span></div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_a_div = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(div_ref), 0});</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  IntegerArgumentProto* neg_div =</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_int_div();</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  neg_div->set_target(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(neg_a_div));</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  neg_div->add_vars(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(neg_a_ref));</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  neg_div->add_vars(b_ref);</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// Link back to the original div.</span></div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  LinearConstraintProto* lin =</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_linear();</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  lin->add_vars(div_ref);</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  lin->add_coeffs(-1);</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  lin->add_vars(pos_a_div);</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  lin->add_vars(neg_a_div);</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  lin->add_domain(0);</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  lin->add_domain(0);</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> }</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment">// This is not an "expansion" per say, but just a mandatory presolve step to</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment">// satisfy preconditions assumed by the rest of the code.</span></div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="keywordtype">void</span> ExpandIntDiv(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> numerator = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->int_div().vars(0);</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> divisor = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->int_div().vars(1);</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->int_div().target();</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(divisor, Domain(0).Complement())) {</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">return</span> (<span class="keywordtype">void</span>)<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NotifyThatModelIsUnsat();</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  }</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="comment">// The checker ensures that the domain of the divisor cannot span across 0,</span></div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// nor take the value 0.</span></div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(divisor) > 0 || <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(divisor) < 0);</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(numerator) < 0 && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(numerator) > 0) {</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(divisor) > 0) {</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  ExpandIntDivWithOneAcrossZero(numerator, divisor, target, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  ExpandIntDivWithOneAcrossZero(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(numerator), <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(divisor),</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  target, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="stringliteral">"int_div: expanded division with numerator spanning across zero"</span>);</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="comment">// Change the sign of the divisor if negative (by simply negating the target).</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(divisor) < 0) {</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_int_div()->set_target(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(target));</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_int_div()->set_vars(1, <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(divisor));</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"int_div: inverse the sign of the divisor"</span>);</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  }</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="comment">// Change the sign of the numerator if negative (by simply negating the</span></div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">// target). It is okay to negate the target twice.</span></div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// At this stage, the domain of the numerator cannot span across 0.</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(numerator) < 0) {</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_int_div()->set_target(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(target));</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_int_div()->set_vars(0, <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(numerator));</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"int_div: inverse the sign of the numerator"</span>);</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> }</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="keywordtype">void</span> ExpandIntMod(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keyword">const</span> IntegerArgumentProto& int_mod = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->int_mod();</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = int_mod.vars(0);</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> mod_var = int_mod.vars(1);</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_var = int_mod.target();</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="comment">// We reduce the domain of target_var to avoid later overflow.</span></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  target_var, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).PositiveModuloBySuperset(</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(mod_var)))) {</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="comment">// Create a new constraint with the same enforcement as ct.</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keyword">auto</span> new_enforced_constraint = [&]() {</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  ConstraintProto* new_ct = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints();</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  *new_ct->mutable_enforcement_literal() = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->enforcement_literal();</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">return</span> new_ct;</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  };</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="comment">// div_var = var / mod_var.</span></div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> div_var =</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).PositiveDivisionBySuperset(</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(mod_var)));</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  IntegerArgumentProto* <span class="keyword">const</span> div_proto =</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  new_enforced_constraint()->mutable_int_div();</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  div_proto->set_target(div_var);</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  div_proto->add_vars(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  div_proto->add_vars(mod_var);</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IsFixed(mod_var)) {</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="comment">// var - div_var * mod = target.</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  LinearConstraintProto* <span class="keyword">const</span> lin =</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  new_enforced_constraint()->mutable_linear();</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  lin->add_vars(int_mod.vars(0));</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  lin->add_vars(div_var);</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  lin->add_coeffs(-<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(mod_var));</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  lin->add_vars(target_var);</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  lin->add_coeffs(-1);</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  lin->add_domain(0);</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  lin->add_domain(0);</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="comment">// Create prod_var = div_var * mod.</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">const</span> Domain prod_domain =</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(div_var)</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  .ContinuousMultiplicationBy(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(mod_var))</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  .IntersectionWith(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).AdditionWith(</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(target_var).Negation()));</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> prod_var = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(prod_domain);</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  IntegerArgumentProto* <span class="keyword">const</span> int_prod =</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  new_enforced_constraint()->mutable_int_prod();</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  int_prod->set_target(prod_var);</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  int_prod->add_vars(div_var);</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  int_prod->add_vars(mod_var);</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>  <span class="comment">// var - prod_var = target.</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  LinearConstraintProto* <span class="keyword">const</span> lin =</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  new_enforced_constraint()->mutable_linear();</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  lin->add_vars(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  lin->add_vars(prod_var);</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  lin->add_coeffs(-1);</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  lin->add_vars(target_var);</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  lin->add_coeffs(-1);</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  lin->add_domain(0);</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  lin->add_domain(0);</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> </div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"int_mod: expanded"</span>);</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> }</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> </div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="keywordtype">void</span> ExpandIntProdWithBoolean(<span class="keywordtype">int</span> bool_ref, <span class="keywordtype">int</span> int_ref, <span class="keywordtype">int</span> product_ref,</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  ConstraintProto* <span class="keyword">const</span> one = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints();</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  one->add_enforcement_literal(bool_ref);</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  one->mutable_linear()->add_vars(int_ref);</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  one->mutable_linear()->add_coeffs(1);</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  one->mutable_linear()->add_vars(product_ref);</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  one->mutable_linear()->add_coeffs(-1);</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  one->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  one->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  ConstraintProto* <span class="keyword">const</span> zero = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints();</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  zero->add_enforcement_literal(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(bool_ref));</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  zero->mutable_linear()->add_vars(product_ref);</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  zero->mutable_linear()->add_coeffs(1);</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  zero->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  zero->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> }</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span> </div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment">// a_ref spans across 0, b_ref does not.</span></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="keywordtype">void</span> ExpandIntProdWithOneAcrossZero(<span class="keywordtype">int</span> a_ref, <span class="keywordtype">int</span> b_ref, <span class="keywordtype">int</span> product_ref,</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <a class="code" href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(a_ref), 0);</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <a class="code" href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(a_ref), 0);</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(b_ref) >= 0 || <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(b_ref) <= 0);</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> </div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="comment">// Split the domain of a in two, controlled by a new literal.</span></div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> a_is_positive = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(a_is_positive, a_ref,</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  {0, <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<int64_t>::max</a>()});</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(a_is_positive), a_ref,</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  {<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>(), -1});</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({0, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(a_ref)});</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  AddXEqualYOrXEqualZero(a_is_positive, pos_a_ref, a_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span> </div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(a_ref), 0});</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  AddXEqualYOrXEqualZero(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(a_is_positive), neg_a_ref, a_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span> </div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="comment">// Create product with the positive part ofa_ref.</span></div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> b_is_positive = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(b_ref) >= 0;</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keyword">const</span> Domain pos_a_product_domain =</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  b_is_positive ? Domain({0, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(product_ref)})</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  : Domain({<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(product_ref), 0});</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_a_product = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(pos_a_product_domain);</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  IntegerArgumentProto* pos_product =</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_int_prod();</div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  pos_product->set_target(pos_a_product);</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  pos_product->add_vars(pos_a_ref);</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  pos_product->add_vars(b_ref);</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> </div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="comment">// Create product with the negative part of a_ref.</span></div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keyword">const</span> Domain neg_a_product_domain =</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  b_is_positive ? Domain({<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(product_ref), 0})</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  : Domain({0, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(product_ref)});</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_a_product = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(neg_a_product_domain);</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  IntegerArgumentProto* neg_product =</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_int_prod();</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  neg_product->set_target(neg_a_product);</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  neg_product->add_vars(neg_a_ref);</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  neg_product->add_vars(b_ref);</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span> </div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="comment">// Link back to the original product.</span></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  LinearConstraintProto* lin =</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_linear();</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  lin->add_vars(product_ref);</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  lin->add_coeffs(-1);</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  lin->add_vars(pos_a_product);</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  lin->add_vars(neg_a_product);</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  lin->add_domain(0);</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  lin->add_domain(0);</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span> }</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span> </div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="keywordtype">void</span> ExpandPositiveIntProdWithTwoAcrossZero(<span class="keywordtype">int</span> a_ref, <span class="keywordtype">int</span> b_ref,</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordtype">int</span> product_ref,</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> terms_are_positive = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keyword">const</span> Domain product_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(product_ref);</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span> </div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keyword">const</span> int64_t max_of_a = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(a_ref);</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keyword">const</span> int64_t max_of_b = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(b_ref);</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="keyword">const</span> Domain positive_vars_domain =</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  Domain(0, <a class="code" href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">CapProd</a>(max_of_a, max_of_b)).IntersectionWith(product_domain);</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordtype">int</span> both_positive_product_ref = <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int>::min</a>();</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keywordflow">if</span> (!positive_vars_domain.IsEmpty()) {</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({0, max_of_a});</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  AddXEqualYOrXEqualZero(terms_are_positive, pos_a_ref, a_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_b_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({0, max_of_b});</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  AddXEqualYOrXEqualZero(terms_are_positive, pos_b_ref, b_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</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 add 0 to the domain in case this product is not selected.</span></div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  both_positive_product_ref =</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(positive_vars_domain.UnionWith(Domain(0)));</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  IntegerArgumentProto* pos_product =</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_int_prod();</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  pos_product->set_target(both_positive_product_ref);</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  pos_product->add_vars(pos_a_ref);</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  pos_product->add_vars(pos_b_ref);</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"> 416</span>  <span class="keyword">const</span> int64_t min_of_a = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(a_ref);</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keyword">const</span> int64_t min_of_b = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(b_ref);</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keyword">const</span> Domain negative_vars_domain =</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  Domain(0, <a class="code" href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">CapProd</a>(min_of_a, min_of_b)).IntersectionWith(product_domain);</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordtype">int</span> both_negative_product_ref = <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int>::min</a>();</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">if</span> (!negative_vars_domain.IsEmpty()) {</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({min_of_a, 0});</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  AddXEqualYOrXEqualZero(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(terms_are_positive), neg_a_ref, a_ref,</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_b_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({min_of_b, 0});</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  AddXEqualYOrXEqualZero(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(terms_are_positive), neg_b_ref, b_ref,</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="comment">// We add 0 to the domain in case this product is not selected.</span></div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  both_negative_product_ref =</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(negative_vars_domain.UnionWith(Domain(0)));</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  IntegerArgumentProto* neg_product =</div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_int_prod();</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  neg_product->set_target(both_negative_product_ref);</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  neg_product->add_vars(neg_a_ref);</div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  neg_product->add_vars(neg_b_ref);</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  }</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span> </div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">// Link back to the original product.</span></div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  LinearConstraintProto* lin =</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_linear();</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  lin->add_vars(product_ref);</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  lin->add_coeffs(-1);</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">if</span> (both_positive_product_ref != <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int>::min</a>()) {</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  lin->add_vars(both_positive_product_ref);</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  }</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordflow">if</span> (both_negative_product_ref != <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int>::min</a>()) {</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  lin->add_vars(both_negative_product_ref);</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  lin->add_coeffs(1);</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>  lin->add_domain(0);</div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  lin->add_domain(0);</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span> }</div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span> </div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span> <span class="keywordtype">void</span> ExpandIntProdWithTwoAcrossZero(<span class="keywordtype">int</span> a_ref, <span class="keywordtype">int</span> b_ref, <span class="keywordtype">int</span> product_ref,</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(product_ref) >= 0) {</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  ExpandPositiveIntProdWithTwoAcrossZero(a_ref, b_ref, product_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(product_ref) <= 0) {</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  ExpandPositiveIntProdWithTwoAcrossZero(a_ref, <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(b_ref),</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(product_ref), <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  }</div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="comment">// Split a_ref domain in two, controlled by a new literal.</span></div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> a_is_positive = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(a_is_positive, a_ref,</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  {0, <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<int64_t>::max</a>()});</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(a_is_positive), a_ref,</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  {<a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>(), -1});</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keyword">const</span> int64_t min_of_a = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(a_ref);</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keyword">const</span> int64_t max_of_a = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(a_ref);</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span> </div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({0, max_of_a});</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  AddXEqualYOrXEqualZero(a_is_positive, pos_a_ref, a_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span> </div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_a_ref = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar({min_of_a, 0});</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  AddXEqualYOrXEqualZero(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(a_is_positive), neg_a_ref, a_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span> </div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="comment">// Create product with two sub parts of a_ref.</span></div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> pos_product_ref =</div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(product_ref));</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  ExpandIntProdWithOneAcrossZero(b_ref, pos_a_ref, pos_product_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> neg_product_ref =</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewIntVar(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(product_ref));</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  ExpandIntProdWithOneAcrossZero(b_ref, neg_a_ref, neg_product_ref, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span> </div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="comment">// Link back to the original product.</span></div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  LinearConstraintProto* lin =</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_linear();</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  lin->add_vars(product_ref);</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  lin->add_coeffs(-1);</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  lin->add_vars(pos_product_ref);</div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  lin->add_vars(neg_product_ref);</div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  lin->add_coeffs(1);</div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  lin->add_domain(0);</div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  lin->add_domain(0);</div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span> }</div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span> </div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="keywordtype">void</span> ExpandIntProd(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keyword">const</span> IntegerArgumentProto& int_prod = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->int_prod();</div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keywordflow">if</span> (int_prod.vars_size() != 2) <span class="keywordflow">return</span>;</div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a> = int_prod.vars(0);</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a> = int_prod.vars(1);</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> p = int_prod.target();</div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> a_is_boolean =</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>) && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>) == 0 && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>) == 1;</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> b_is_boolean =</div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>) && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>) == 0 && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>) == 1;</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span> </div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  <span class="comment">// We expand if exactly one of {a, b} is Boolean. If both are Boolean, it</span></div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="comment">// will be presolved into a better version.</span></div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">if</span> (a_is_boolean && !b_is_boolean) {</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  ExpandIntProdWithBoolean(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>, <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>, p, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"int_prod: expanded product with Boolean var"</span>);</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  }</div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="keywordflow">if</span> (b_is_boolean && !a_is_boolean) {</div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  ExpandIntProdWithBoolean(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>, <a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>, p, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"int_prod: expanded product with Boolean var"</span>);</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="keywordflow">return</span>;</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>  <span class="keyword">const</span> <span class="keywordtype">bool</span> a_span_across_zero =</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>) < 0 && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>) > 0;</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> b_span_across_zero =</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>) < 0 && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>) > 0;</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="keywordflow">if</span> (a_span_across_zero && !b_span_across_zero) {</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  ExpandIntProdWithOneAcrossZero(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>, <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>, p, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="stringliteral">"int_prod: expanded product with general integer variables"</span>);</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  }</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="keywordflow">if</span> (!a_span_across_zero && b_span_across_zero) {</div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  ExpandIntProdWithOneAcrossZero(<a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>, <a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>, p, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <span class="stringliteral">"int_prod: expanded product with general integer variables"</span>);</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  }</div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordflow">if</span> (a_span_across_zero && b_span_across_zero) {</div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  ExpandIntProdWithTwoAcrossZero(<a class="code" href="constraint__solver_2table_8cc.html#acb18315d548212835cd8ed4287e6c0b6">a</a>, <a class="code" href="constraint__solver_2table_8cc.html#a9293e4d29cac928301645070dd307683">b</a>, p, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(</div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="stringliteral">"int_prod: expanded product with general integer variables"</span>);</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</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> <span class="keywordtype">void</span> ExpandInverse(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_direct().size();</div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(size, <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_inverse().size());</div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span> </div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="comment">// Make sure the domains are included in [0, size - 1).</span></div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  <span class="comment">//</span></div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="comment">// TODO(user): Add support for UNSAT at expansion. This should create empty</span></div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="comment">// domain if UNSAT, so it should still work correctly.</span></div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_direct()) {</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(ref, Domain(0, size - 1))) {</div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Empty domain for a variable in ExpandInverse()"</span>;</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  }</div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  }</div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_inverse()) {</div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(ref, Domain(0, size - 1))) {</div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Empty domain for a variable in ExpandInverse()"</span>;</div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  }</div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  }</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span> </div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="comment">// Reduce the domains of each variable by checking that the inverse value</span></div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  <span class="comment">// exists.</span></div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  std::vector<int64_t> possible_values;</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <span class="comment">// Propagate from one vector to its counterpart.</span></div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="comment">// Note this reaches the fixpoint as there is a one to one mapping between</span></div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <span class="comment">// (variable-value) pairs in each vector.</span></div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keyword">const</span> <span class="keyword">auto</span> filter_inverse_domain = [<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>, size, &possible_values](</div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& direct,</div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& inverse) {</div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="comment">// Propagate for the inverse vector to the direct vector.</span></div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size; ++i) {</div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  possible_values.clear();</div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="keyword">const</span> Domain domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(direct[i]);</div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="keywordtype">bool</span> removed_value = <span class="keyword">false</span>;</div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t j : domain.Values()) {</div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(inverse[j]).Contains(i)) {</div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  possible_values.push_back(j);</div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  removed_value = <span class="keyword">true</span>;</div><div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  }</div><div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  }</div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">if</span> (removed_value) {</div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(</div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  direct[i], <a class="code" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>(possible_values))) {</div><div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Empty domain for a variable in ExpandInverse()"</span>;</div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  }</div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  }</div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  };</div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span> </div><div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">if</span> (!filter_inverse_domain(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_direct(),</div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_inverse())) {</div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keywordflow">return</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">if</span> (!filter_inverse_domain(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_inverse(),</div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_direct())) {</div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span> </div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="comment">// Expand the inverse constraint by associating literal to var == value</span></div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="comment">// and sharing them between the direct and inverse variables.</span></div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size; ++i) {</div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> f_i = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_direct(i);</div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t j : <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(f_i).Values()) {</div><div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="comment">// We have f[i] == j <=> r[j] == i;</span></div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> r_j = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->inverse().f_inverse(j);</div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="keywordtype">int</span> r_j_i;</div><div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->HasVarValueEncoding(r_j, i, &r_j_i)) {</div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->InsertVarValueEncoding(r_j_i, f_i, j);</div><div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> f_i_j = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(f_i, j);</div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->InsertVarValueEncoding(f_i_j, r_j, i);</div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  }</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>  }</div><div class="line"><a name="l00633"></a><span class="lineno"> 633</span> </div><div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"inverse: expanded"</span>);</div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span> }</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> <span class="comment">// A[V] == V means for all i, V == i => A_i == i</span></div><div class="line"><a name="l00639"></a><span class="lineno"> 639</span> <span class="keywordtype">void</span> ExpandElementWithTargetEqualIndex(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>,</div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="keyword">const</span> ElementConstraintProto& element = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->element();</div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  <a class="code" href="base_2logging_8h.html#ae89df3243bbb8341130c7b3f44145ea0">DCHECK_EQ</a>(element.index(), element.target());</div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span> </div><div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> index_ref = element.index();</div><div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  std::vector<int64_t> valid_indices;</div><div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(index_ref).Values()) {</div><div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(element.vars(v), v)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  valid_indices.push_back(v);</div><div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  }</div><div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  <span class="keywordflow">if</span> (valid_indices.size() < <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(index_ref).Size()) {</div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(index_ref,</div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  <a class="code" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>(valid_indices))) {</div><div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"No compatible variable domains in "</span></div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <span class="stringliteral">"ExpandElementWithTargetEqualIndex()"</span>;</div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  <span class="keywordflow">return</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>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"element: reduced index domain"</span>);</div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  }</div><div class="line"><a name="l00659"></a><span class="lineno"> 659</span> </div><div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(index_ref).Values()) {</div><div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = element.vars(v);</div><div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) == v && <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MaxOf(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>) == v) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(</div><div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(index_ref, v), <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, Domain(v));</div><div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  }</div><div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(</div><div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="stringliteral">"element: expanded with special case target = index"</span>);</div><div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</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> <span class="comment">// Special case if the array of the element is filled with constant values.</span></div><div class="line"><a name="l00672"></a><span class="lineno"> 672</span> <span class="keywordtype">void</span> ExpandConstantArrayElement(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <span class="keyword">const</span> ElementConstraintProto& element = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->element();</div><div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> index_ref = element.index();</div><div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_ref = element.target();</div><div class="line"><a name="l00676"></a><span class="lineno"> 676</span> </div><div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="comment">// Index and target domain have been reduced before calling this function.</span></div><div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <span class="keyword">const</span> Domain index_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(index_ref);</div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keyword">const</span> Domain target_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(target_ref);</div><div class="line"><a name="l00680"></a><span class="lineno"> 680</span> </div><div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <span class="comment">// This BoolOrs implements the deduction that if all index literals pointing</span></div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <span class="comment">// to the same value in the constant array are false, then this value is no</span></div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  <span class="comment">// no longer valid for the target variable. They are created only for values</span></div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="comment">// that have multiples literals supporting them.</span></div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  <span class="comment">// Order is not important.</span></div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  absl::flat_hash_map<int64_t, BoolArgumentProto*> supports;</div><div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  {</div><div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  absl::flat_hash_map<int64_t, int> constant_var_values_usage;</div><div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : index_domain.Values()) {</div><div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IsFixed(element.vars(v)));</div><div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(element.vars(v));</div><div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <span class="keywordflow">if</span> (++constant_var_values_usage[<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>] == 2) {</div><div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="comment">// First time we cross > 1.</span></div><div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  BoolArgumentProto* <span class="keyword">const</span> support =</div><div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_bool_or();</div><div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_literal =</div><div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(target_ref, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  support->add_literals(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(target_literal));</div><div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  supports[<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>] = support;</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"> 703</span> </div><div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  {</div><div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="comment">// While this is not stricly needed since all value in the index will be</span></div><div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="comment">// covered, it allows to easily detect this fact in the presolve.</span></div><div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  <span class="keyword">auto</span>* exactly_one =</div><div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_exactly_one();</div><div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : index_domain.Values()) {</div><div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> index_literal =</div><div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(index_ref, v);</div><div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  exactly_one->add_literals(index_literal);</div><div class="line"><a name="l00713"></a><span class="lineno"> 713</span> </div><div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->MinOf(element.vars(v));</div><div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keyword">const</span> <span class="keyword">auto</span>& it = supports.find(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordflow">if</span> (it != supports.end()) {</div><div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="comment">// The encoding literal for 'value' of the target_ref has been</span></div><div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  <span class="comment">// created before.</span></div><div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_literal =</div><div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(target_ref, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplication(index_literal, target_literal);</div><div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  it->second->add_literals(index_literal);</div><div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  <span class="comment">// Try to reuse the literal of the index.</span></div><div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->InsertVarValueEncoding(index_literal, target_ref, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00726"></a><span class="lineno"> 726</span>  }</div><div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  }</div><div class="line"><a name="l00728"></a><span class="lineno"> 728</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>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"element: expanded value element"</span>);</div><div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00732"></a><span class="lineno"> 732</span> }</div><div class="line"><a name="l00733"></a><span class="lineno"> 733</span> </div><div class="line"><a name="l00734"></a><span class="lineno"> 734</span> <span class="comment">// General element when the array contains non fixed variables.</span></div><div class="line"><a name="l00735"></a><span class="lineno"> 735</span> <span class="keywordtype">void</span> ExpandVariableElement(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="keyword">const</span> ElementConstraintProto& element = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->element();</div><div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> index_ref = element.index();</div><div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_ref = element.target();</div><div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keyword">const</span> Domain index_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(index_ref);</div><div class="line"><a name="l00740"></a><span class="lineno"> 740</span> </div><div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  BoolArgumentProto* bool_or =</div><div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_bool_or();</div><div class="line"><a name="l00743"></a><span class="lineno"> 743</span> </div><div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : index_domain.Values()) {</div><div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = element.vars(v);</div><div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  <span class="keyword">const</span> Domain var_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> index_lit = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(index_ref, v);</div><div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  bool_or->add_literals(index_lit);</div><div class="line"><a name="l00749"></a><span class="lineno"> 749</span> </div><div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <span class="keywordflow">if</span> (var_domain.IsFixed()) {</div><div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplyInDomain(index_lit, target_ref, var_domain);</div><div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  ConstraintProto* <span class="keyword">const</span> <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a> = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints();</div><div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->add_enforcement_literal(index_lit);</div><div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_linear()->add_vars(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div><div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_linear()->add_coeffs(1);</div><div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_linear()->add_vars(target_ref);</div><div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_linear()->add_coeffs(-1);</div><div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_linear()->add_domain(0);</div><div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  }</div><div class="line"><a name="l00762"></a><span class="lineno"> 762</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>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"element: expanded"</span>);</div><div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</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> </div><div class="line"><a name="l00768"></a><span class="lineno"> 768</span> <span class="keywordtype">void</span> ExpandElement(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="keyword">const</span> ElementConstraintProto& element = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->element();</div><div class="line"><a name="l00770"></a><span class="lineno"> 770</span> </div><div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> index_ref = element.index();</div><div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_ref = element.target();</div><div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size = element.vars_size();</div><div class="line"><a name="l00774"></a><span class="lineno"> 774</span> </div><div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="comment">// Reduce the domain of the index to be compatible with the array of</span></div><div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  <span class="comment">// variables. Note that the element constraint is 0 based.</span></div><div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(index_ref, Domain(0, size - 1))) {</div><div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Empty domain for the index variable in ExpandElement()"</span>;</div><div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <span class="keywordflow">return</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> </div><div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  <span class="comment">// Special case when index = target.</span></div><div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">if</span> (index_ref == target_ref) {</div><div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  ExpandElementWithTargetEqualIndex(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  }</div><div class="line"><a name="l00787"></a><span class="lineno"> 787</span> </div><div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <span class="comment">// Reduces the domain of the index and the target.</span></div><div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  <span class="keywordtype">bool</span> all_constants = <span class="keyword">true</span>;</div><div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  std::vector<int64_t> valid_indices;</div><div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  <span class="keyword">const</span> Domain index_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(index_ref);</div><div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  <span class="keyword">const</span> Domain target_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(target_ref);</div><div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  Domain reached_domain;</div><div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : index_domain.Values()) {</div><div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  <span class="keyword">const</span> Domain var_domain = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(element.vars(v));</div><div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="keywordflow">if</span> (var_domain.IntersectionWith(target_domain).IsEmpty()) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00797"></a><span class="lineno"> 797</span> </div><div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  valid_indices.push_back(v);</div><div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  reached_domain = reached_domain.UnionWith(var_domain);</div><div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="keywordflow">if</span> (var_domain.Min() != var_domain.Max()) {</div><div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  all_constants = <span class="keyword">false</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> </div><div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <span class="keywordflow">if</span> (valid_indices.size() < index_domain.Size()) {</div><div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(index_ref,</div><div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  <a class="code" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>(valid_indices))) {</div><div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"No compatible variable domains in ExpandElement()"</span>;</div><div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  }</div><div class="line"><a name="l00811"></a><span class="lineno"> 811</span> </div><div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"element: reduced index domain"</span>);</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>  <span class="comment">// We know the target_domain is not empty as this would have triggered the</span></div><div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="comment">// above check.</span></div><div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  <span class="keywordtype">bool</span> target_domain_changed = <span class="keyword">false</span>;</div><div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(target_ref, reached_domain,</div><div class="line"><a name="l00819"></a><span class="lineno"> 819</span>  &target_domain_changed)) {</div><div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  <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> </div><div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="keywordflow">if</span> (target_domain_changed) {</div><div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"element: reduced target domain"</span>);</div><div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  }</div><div class="line"><a name="l00826"></a><span class="lineno"> 826</span> </div><div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  <span class="keywordflow">if</span> (all_constants) {</div><div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  ExpandConstantArrayElement(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l00829"></a><span class="lineno"> 829</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  }</div><div class="line"><a name="l00831"></a><span class="lineno"> 831</span> </div><div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  ExpandVariableElement(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</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> </div><div class="line"><a name="l00835"></a><span class="lineno"> 835</span> <span class="comment">// Adds clauses so that literals[i] true <=> encoding[value[i]] true.</span></div><div class="line"><a name="l00836"></a><span class="lineno"> 836</span> <span class="comment">// This also implicitly use the fact that exactly one alternative is true.</span></div><div class="line"><a name="l00837"></a><span class="lineno"> 837</span> <span class="keywordtype">void</span> LinkLiteralsAndValues(</div><div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="keyword">const</span> std::vector<int>& value_literals, <span class="keyword">const</span> std::vector<int64_t>& values,</div><div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  <span class="keyword">const</span> absl::flat_hash_map<int64_t, int>& target_encoding,</div><div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(value_literals.size(), values.size());</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>  <span class="comment">// TODO(user): Make sure this does not appear in the profile.</span></div><div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  <span class="comment">// We use a map to make this method deterministic.</span></div><div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  std::map<int, std::vector<int>> value_literals_per_target_literal;</div><div class="line"><a name="l00846"></a><span class="lineno"> 846</span> </div><div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  <span class="comment">// If a value is false (i.e not possible), then the tuple with this</span></div><div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  <span class="comment">// value is false too (i.e not possible). Conversely, if the tuple is</span></div><div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <span class="comment">// selected, the value must be selected.</span></div><div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < values.size(); ++i) {</div><div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  <span class="keyword">const</span> int64_t v = values[i];</div><div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(target_encoding.contains(v));</div><div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> lit = <a class="code" href="namespacegtl.html#abce27d097bc5680207b294bdad75f59f">gtl::FindOrDie</a>(target_encoding, v);</div><div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  value_literals_per_target_literal[lit].push_back(value_literals[i]);</div><div class="line"><a name="l00855"></a><span class="lineno"> 855</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="comment">// If all tuples supporting a value are false, then this value must be</span></div><div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <span class="comment">// false.</span></div><div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& it : value_literals_per_target_literal) {</div><div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> target_literal = it.first;</div><div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  <span class="keywordflow">switch</span> (it.second.size()) {</div><div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="keywordflow">case</span> 0: {</div><div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->SetLiteralToFalse(target_literal)) {</div><div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  }</div><div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  }</div><div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  <span class="keywordflow">case</span> 1: {</div><div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->StoreBooleanEqualityRelation(target_literal,</div><div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  it.second.front());</div><div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00872"></a><span class="lineno"> 872</span>  }</div><div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  <span class="keywordflow">default</span>: {</div><div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  BoolArgumentProto* <span class="keyword">const</span> bool_or =</div><div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_bool_or();</div><div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  bool_or->add_literals(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(target_literal));</div><div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> value_literal : it.second) {</div><div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  bool_or->add_literals(value_literal);</div><div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplication(value_literal, target_literal);</div><div class="line"><a name="l00880"></a><span class="lineno"> 880</span>  }</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>  }</div><div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  }</div><div class="line"><a name="l00884"></a><span class="lineno"> 884</span> }</div><div class="line"><a name="l00885"></a><span class="lineno"> 885</span> </div><div class="line"><a name="l00886"></a><span class="lineno"> 886</span> <span class="keywordtype">void</span> ExpandAutomaton(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  AutomatonConstraintProto& <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a> = *<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_automaton();</div><div class="line"><a name="l00888"></a><span class="lineno"> 888</span> </div><div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="keywordflow">if</span> (<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars_size() == 0) {</div><div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  <span class="keyword">const</span> int64_t initial_state = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.starting_state();</div><div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t final_state : <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.final_states()) {</div><div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="keywordflow">if</span> (initial_state == final_state) {</div><div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"automaton: empty and trivially feasible"</span>);</div><div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  }</div><div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  }</div><div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  <span class="keywordflow">return</span> (<span class="keywordtype">void</span>)<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NotifyThatModelIsUnsat(</div><div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <span class="stringliteral">"automaton: empty with an initial state not in the final states."</span>);</div><div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_label_size() == 0) {</div><div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="keywordflow">return</span> (<span class="keywordtype">void</span>)<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NotifyThatModelIsUnsat(</div><div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <span class="stringliteral">"automaton: non-empty with no transition."</span>);</div><div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  }</div><div class="line"><a name="l00904"></a><span class="lineno"> 904</span> </div><div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> n = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars_size();</div><div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  <span class="keyword">const</span> std::vector<int> vars = {<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars().begin(), <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars().end()};</div><div class="line"><a name="l00907"></a><span class="lineno"> 907</span> </div><div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  <span class="comment">// Compute the set of reachable state at each time point.</span></div><div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  <span class="keyword">const</span> absl::flat_hash_set<int64_t> final_states(</div><div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  {<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.final_states().begin(), <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.final_states().end()});</div><div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  std::vector<absl::flat_hash_set<int64_t>> reachable_states(n + 1);</div><div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  reachable_states[0].insert(<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.starting_state());</div><div class="line"><a name="l00913"></a><span class="lineno"> 913</span> </div><div class="line"><a name="l00914"></a><span class="lineno"> 914</span>  <span class="comment">// Forward pass.</span></div><div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> = 0; <a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> < n; ++<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>) {</div><div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t = 0; t < <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_tail_size(); ++t) {</div><div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  <span class="keyword">const</span> int64_t <a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_tail(t);</div><div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  <span class="keyword">const</span> int64_t label = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_label(t);</div><div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  <span class="keyword">const</span> int64_t <a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_head(t);</div><div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  <span class="keywordflow">if</span> (!reachable_states[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>].contains(<a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a>)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(vars[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], label)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  <span class="keywordflow">if</span> (<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> == n - 1 && !final_states.contains(<a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a>)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  reachable_states[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1].insert(<a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a>);</div><div class="line"><a name="l00924"></a><span class="lineno"> 924</span>  }</div><div class="line"><a name="l00925"></a><span class="lineno"> 925</span>  }</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="comment">// Backward pass.</span></div><div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> = n - 1; <a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> >= 0; --<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>) {</div><div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  absl::flat_hash_set<int64_t> new_set;</div><div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> t = 0; t < <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_tail_size(); ++t) {</div><div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  <span class="keyword">const</span> int64_t <a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_tail(t);</div><div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="keyword">const</span> int64_t label = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_label(t);</div><div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <span class="keyword">const</span> int64_t <a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_head(t);</div><div class="line"><a name="l00934"></a><span class="lineno"> 934</span> </div><div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  <span class="keywordflow">if</span> (!reachable_states[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>].contains(<a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a>)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(vars[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], label)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  <span class="keywordflow">if</span> (!reachable_states[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1].contains(<a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a>)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  new_set.insert(<a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</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>  reachable_states[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>].<a class="code" href="classoperations__research_1_1sat_1_1_cp_model_proto.html#a934d9868f4bfcada979a310ea97ce987">swap</a>(new_set);</div><div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  }</div><div class="line"><a name="l00942"></a><span class="lineno"> 942</span> </div><div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  <span class="comment">// We will model at each time step the current automaton state using Boolean</span></div><div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="comment">// variables. We will have n+1 time step. At time zero, we start in the</span></div><div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  <span class="comment">// initial state, and at time n we should be in one of the final states. We</span></div><div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  <span class="comment">// don't need to create Booleans at at time when there is just one possible</span></div><div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  <span class="comment">// state (like at time zero).</span></div><div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  absl::flat_hash_map<int64_t, int> encoding;</div><div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  absl::flat_hash_map<int64_t, int> in_encoding;</div><div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  absl::flat_hash_map<int64_t, int> out_encoding;</div><div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  <span class="keywordtype">bool</span> removed_values = <span class="keyword">false</span>;</div><div class="line"><a name="l00952"></a><span class="lineno"> 952</span> </div><div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> = 0; <a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> < n; ++<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>) {</div><div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <span class="comment">// All these vector have the same size. We will use them to enforce a</span></div><div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  <span class="comment">// local table constraint representing one step of the automaton at the</span></div><div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  <span class="comment">// given time.</span></div><div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  std::vector<int64_t> in_states;</div><div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  std::vector<int64_t> transition_values;</div><div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  std::vector<int64_t> out_states;</div><div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_label_size(); ++i) {</div><div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  <span class="keyword">const</span> int64_t <a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_tail(i);</div><div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  <span class="keyword">const</span> int64_t label = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_label(i);</div><div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="keyword">const</span> int64_t <a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transition_head(i);</div><div class="line"><a name="l00964"></a><span class="lineno"> 964</span> </div><div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  <span class="keywordflow">if</span> (!reachable_states[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>].contains(<a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a>)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <span class="keywordflow">if</span> (!reachable_states[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1].contains(<a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a>)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(vars[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], label)) <span class="keywordflow">continue</span>;</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">// TODO(user): if this transition correspond to just one in-state or</span></div><div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <span class="comment">// one-out state or one variable value, we could reuse the corresponding</span></div><div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <span class="comment">// Boolean variable instead of creating a new one!</span></div><div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  in_states.push_back(<a class="code" href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a>);</div><div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  transition_values.push_back(label);</div><div class="line"><a name="l00974"></a><span class="lineno"> 974</span> </div><div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  <span class="comment">// On the last step we don't need to distinguish the output states, so</span></div><div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  <span class="comment">// we use zero.</span></div><div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  out_states.push_back(<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a> + 1 == n ? 0 : <a class="code" href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a>);</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> </div><div class="line"><a name="l00980"></a><span class="lineno"> 980</span>  std::vector<int> tuple_literals;</div><div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <span class="keywordflow">if</span> (transition_values.size() == 1) {</div><div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  tuple_literals.push_back(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateConstantVar(1));</div><div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(vars[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>],</div><div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  Domain(transition_values.front()))) {</div><div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Infeasible automaton."</span>;</div><div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  }</div><div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  in_encoding.clear();</div><div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (transition_values.size() == 2) {</div><div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> bool_var = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  tuple_literals.push_back(bool_var);</div><div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  tuple_literals.push_back(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(bool_var));</div><div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  <span class="comment">// Note that we do not need the ExactlyOneConstraint(tuple_literals)</span></div><div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  <span class="comment">// because it is already implicitly encoded since we have exactly one</span></div><div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  <span class="comment">// transition value.</span></div><div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  LinearConstraintProto* <span class="keyword">const</span> exactly_one =</div><div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_linear();</div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  exactly_one->add_domain(1);</div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  exactly_one->add_domain(1);</div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < transition_values.size(); ++i) {</div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> tuple_literal = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  tuple_literals.push_back(tuple_literal);</div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  exactly_one->add_vars(tuple_literal);</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>  exactly_one->add_coeffs(1);</div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  }</div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</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>  <span class="comment">// Fully encode vars[time].</span></div><div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>  {</div><div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>  std::vector<int64_t> s = transition_values;</div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  <a class="code" href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a>(&s);</div><div class="line"><a name="l01014"></a><span class="lineno"> 1014</span> </div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  encoding.clear();</div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(vars[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], <a class="code" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>(s),</div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  &removed_values)) {</div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Infeasible automaton."</span>;</div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  }</div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span> </div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  <span class="comment">// Fully encode the variable.</span></div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(vars[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>]).Values()) {</div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  encoding[v] = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(vars[<a class="code" href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a>], v);</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  }</div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</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>  <span class="comment">// For each possible out states, create one Boolean variable.</span></div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  {</div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  std::vector<int64_t> s = out_states;</div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  <a class="code" href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a>(&s);</div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span> </div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  out_encoding.clear();</div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  <span class="keywordflow">if</span> (s.size() == 2) {</div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</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="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  out_encoding[s.front()] = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>;</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  out_encoding[s.back()] = <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="l01038"></a><span class="lineno"> 1038</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s.size() > 2) {</div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t state : s) {</div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  out_encoding[state] = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  }</div><div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  }</div><div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  }</div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span> </div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  <span class="keywordflow">if</span> (!in_encoding.empty()) {</div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  LinkLiteralsAndValues(tuple_literals, in_states, in_encoding, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  }</div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  <span class="keywordflow">if</span> (!encoding.empty()) {</div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  LinkLiteralsAndValues(tuple_literals, transition_values, encoding,</div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  }</div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  <span class="keywordflow">if</span> (!out_encoding.empty()) {</div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  LinkLiteralsAndValues(tuple_literals, out_states, out_encoding, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  }</div><div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  in_encoding.swap(out_encoding);</div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  out_encoding.clear();</div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  }</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>  <span class="keywordflow">if</span> (removed_values) {</div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"automaton: reduced variable domains"</span>);</div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  }</div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"automaton: expanded"</span>);</div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span> }</div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span> </div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span> <span class="keywordtype">void</span> ExpandNegativeTable(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  TableConstraintProto& table = *<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_table();</div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_vars = table.vars_size();</div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_original_tuples = table.values_size() / num_vars;</div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  std::vector<std::vector<int64_t>> tuples(num_original_tuples);</div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  <span class="keywordtype">int</span> count = 0;</div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_original_tuples; ++i) {</div><div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < num_vars; ++j) {</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  tuples[i].push_back(table.values(count++));</div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  }</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  }</div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span> </div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  <span class="keywordflow">if</span> (tuples.empty()) { <span class="comment">// Early exit.</span></div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: empty negated constraint"</span>);</div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  }</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span> </div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  <span class="comment">// Compress tuples.</span></div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  <span class="keyword">const</span> int64_t any_value = <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>();</div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  std::vector<int64_t> domain_sizes;</div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_vars; ++i) {</div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  domain_sizes.push_back(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(table.vars(i)).Size());</div><div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>  }</div><div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a441a154d125df2eb884a44be77e2bfc0">CompressTuples</a>(domain_sizes, any_value, &tuples);</div><div class="line"><a name="l01091"></a><span class="lineno"> 1091</span> </div><div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  <span class="comment">// For each tuple, forbid the variables values to be this tuple.</span></div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  std::vector<int> clause;</div><div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& tuple : tuples) {</div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  clause.clear();</div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_vars; ++i) {</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = tuple[i];</div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> == any_value) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span> </div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</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="l01101"></a><span class="lineno"> 1101</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(table.vars(i), <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  clause.push_back(<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="l01103"></a><span class="lineno"> 1103</span>  }</div><div class="line"><a name="l01104"></a><span class="lineno"> 1104</span> </div><div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  <span class="comment">// Note: if the clause is empty, then the model is infeasible.</span></div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  BoolArgumentProto* bool_or =</div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_bool_or();</div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> lit : clause) {</div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  bool_or->add_literals(lit);</div><div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  }</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>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: expanded negated constraint"</span>);</div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span> }</div><div class="line"><a name="l01115"></a><span class="lineno"> 1115</span> </div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span> <span class="keywordtype">void</span> ExpandLinMin(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  ConstraintProto* <span class="keyword">const</span> lin_max = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints();</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->enforcement_literal_size(); ++i) {</div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  lin_max->add_enforcement_literal(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->enforcement_literal(i));</div><div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>  }</div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span> </div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  <span class="comment">// Target</span></div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a22efb1995471e34caa35927a9032f5f3">SetToNegatedLinearExpression</a>(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->lin_min().target(),</div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  lin_max->mutable_lin_max()->mutable_target());</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>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->lin_min().exprs_size(); ++i) {</div><div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  LinearExpressionProto* <span class="keyword">const</span> expr = lin_max->mutable_lin_max()->add_exprs();</div><div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a22efb1995471e34caa35927a9032f5f3">SetToNegatedLinearExpression</a>(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->lin_min().exprs(i), expr);</div><div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>  }</div><div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01131"></a><span class="lineno"> 1131</span> }</div><div class="line"><a name="l01132"></a><span class="lineno"> 1132</span> </div><div class="line"><a name="l01133"></a><span class="lineno"> 1133</span> <span class="comment">// Add the implications and clauses to link one variable of a table to the</span></div><div class="line"><a name="l01134"></a><span class="lineno"> 1134</span> <span class="comment">// literals controlling if the tuples are possible or not. The parallel vectors</span></div><div class="line"><a name="l01135"></a><span class="lineno"> 1135</span> <span class="comment">// (tuple_literals, values) contains all valid projected tuples. The</span></div><div class="line"><a name="l01136"></a><span class="lineno"> 1136</span> <span class="comment">// tuples_with_any vector provides a list of tuple_literals that will support</span></div><div class="line"><a name="l01137"></a><span class="lineno"> 1137</span> <span class="comment">// any value.</span></div><div class="line"><a name="l01138"></a><span class="lineno"> 1138</span> <span class="keywordtype">void</span> ProcessOneVariable(<span class="keyword">const</span> std::vector<int>& tuple_literals,</div><div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  <span class="keyword">const</span> std::vector<int64_t>& values, <span class="keywordtype">int</span> variable,</div><div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  <span class="keyword">const</span> std::vector<int>& tuples_with_any,</div><div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Process var("</span> << variable << <span class="stringliteral">") with domain "</span></div><div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  << <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(variable) << <span class="stringliteral">" and "</span> << values.size()</div><div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  << <span class="stringliteral">" active tuples, and "</span> << tuples_with_any.size() << <span class="stringliteral">" any tuples"</span>;</div><div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(tuple_literals.size(), values.size());</div><div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  std::vector<std::pair<int64_t, int>> pairs;</div><div class="line"><a name="l01147"></a><span class="lineno"> 1147</span> </div><div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  <span class="comment">// Collect pairs of value-literal.</span></div><div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < values.size(); ++i) {</div><div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = values[i];</div><div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(variable, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>));</div><div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  pairs.emplace_back(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, tuple_literals[i]);</div><div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  }</div><div class="line"><a name="l01154"></a><span class="lineno"> 1154</span> </div><div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  <span class="comment">// Regroup literal with the same value and add for each the clause: If all the</span></div><div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  <span class="comment">// tuples containing a value are false, then this value must be false too.</span></div><div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  std::vector<int> selected;</div><div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  std::sort(pairs.begin(), pairs.end());</div><div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < pairs.size();) {</div><div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  selected.clear();</div><div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = pairs[i].first;</div><div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  <span class="keywordflow">for</span> (; i < pairs.size() && pairs[i].first == <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>; ++i) {</div><div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  selected.push_back(pairs[i].second);</div><div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>  }</div><div class="line"><a name="l01165"></a><span class="lineno"> 1165</span> </div><div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!selected.empty() || !tuples_with_any.empty());</div><div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  <span class="keywordflow">if</span> (selected.size() == 1 && tuples_with_any.empty()) {</div><div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->InsertVarValueEncoding(selected.front(), variable, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> value_literal =</div><div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(variable, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  BoolArgumentProto* no_support =</div><div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_bool_or();</div><div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> lit : selected) {</div><div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  no_support->add_literals(lit);</div><div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplication(lit, value_literal);</div><div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  }</div><div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> lit : tuples_with_any) {</div><div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  no_support->add_literals(lit);</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> </div><div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <span class="comment">// And the "value" literal.</span></div><div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>  no_support->add_literals(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(value_literal));</div><div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  }</div><div class="line"><a name="l01185"></a><span class="lineno"> 1185</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> </div><div class="line"><a name="l01188"></a><span class="lineno"> 1188</span> <span class="comment">// Simpler encoding for table constraints with 2 variables.</span></div><div class="line"><a name="l01189"></a><span class="lineno"> 1189</span> <span class="keywordtype">void</span> AddSizeTwoTable(</div><div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>  <span class="keyword">const</span> std::vector<int>& vars,</div><div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  <span class="keyword">const</span> std::vector<std::vector<int64_t>>& tuples,</div><div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  <span class="keyword">const</span> std::vector<absl::flat_hash_set<int64_t>>& values_per_var,</div><div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  <a class="code" href="base_2logging_8h.html#a7c0ce053b28d53aa4eaf3eb7fb71663b">CHECK_EQ</a>(vars.size(), 2);</div><div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> left_var = vars[0];</div><div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> right_var = vars[1];</div><div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(left_var).IsFixed() ||</div><div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(right_var).IsFixed()) {</div><div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  <span class="comment">// A table constraint with at most one variable not fixed is trivially</span></div><div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  <span class="comment">// enforced after domain reduction.</span></div><div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01202"></a><span class="lineno"> 1202</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>  std::map<int, std::vector<int>> left_to_right;</div><div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  std::map<int, std::vector<int>> right_to_left;</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>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& tuple : tuples) {</div><div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  <span class="keyword">const</span> int64_t left_value(tuple[0]);</div><div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  <span class="keyword">const</span> int64_t right_value(tuple[1]);</div><div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(left_var, left_value));</div><div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(right_var, right_value));</div><div class="line"><a name="l01212"></a><span class="lineno"> 1212</span> </div><div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> left_literal =</div><div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(left_var, left_value);</div><div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> right_literal =</div><div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(right_var, right_value);</div><div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  left_to_right[left_literal].push_back(right_literal);</div><div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  right_to_left[right_literal].push_back(left_literal);</div><div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  }</div><div class="line"><a name="l01220"></a><span class="lineno"> 1220</span> </div><div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  <span class="keywordtype">int</span> num_implications = 0;</div><div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  <span class="keywordtype">int</span> num_clause_added = 0;</div><div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  <span class="keywordtype">int</span> num_large_clause_added = 0;</div><div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  <span class="keyword">auto</span> add_support_constraint =</div><div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  [<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>, &num_clause_added, &num_large_clause_added, &num_implications](</div><div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  <span class="keywordtype">int</span> lit, <span class="keyword">const</span> std::vector<int>& support_literals,</div><div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="keywordtype">int</span> max_support_size) {</div><div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>  <span class="keywordflow">if</span> (support_literals.size() == max_support_size) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="keywordflow">if</span> (support_literals.size() == 1) {</div><div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->AddImplication(lit, support_literals.front());</div><div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  num_implications++;</div><div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  BoolArgumentProto* bool_or =</div><div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_bool_or();</div><div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> support_literal : support_literals) {</div><div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  bool_or->add_literals(support_literal);</div><div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  }</div><div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  bool_or->add_literals(<a class="code" href="namespaceoperations__research_1_1sat.html#ae0803b8198728cd4f6e58498d9c60091">NegatedRef</a>(lit));</div><div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  num_clause_added++;</div><div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  <span class="keywordflow">if</span> (support_literals.size() > max_support_size / 2) {</div><div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  num_large_clause_added++;</div><div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  }</div><div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  }</div><div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  };</div><div class="line"><a name="l01245"></a><span class="lineno"> 1245</span> </div><div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& it : left_to_right) {</div><div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>  add_support_constraint(it.first, it.second, values_per_var[1].size());</div><div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  }</div><div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& it : right_to_left) {</div><div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  add_support_constraint(it.first, it.second, values_per_var[0].size());</div><div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>  }</div><div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <span class="stringliteral">"Table: 2 variables, "</span> << tuples.size() << <span class="stringliteral">" tuples encoded using "</span></div><div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  << num_clause_added << <span class="stringliteral">" clauses, including "</span></div><div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  << num_large_clause_added << <span class="stringliteral">" large clauses, "</span> << num_implications</div><div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  << <span class="stringliteral">" implications"</span>;</div><div class="line"><a name="l01256"></a><span class="lineno"> 1256</span> }</div><div class="line"><a name="l01257"></a><span class="lineno"> 1257</span> </div><div class="line"><a name="l01258"></a><span class="lineno"> 1258</span> <span class="keywordtype">void</span> ExpandPositiveTable(ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  <span class="keyword">const</span> TableConstraintProto& table = <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->table();</div><div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  <span class="keyword">const</span> std::vector<int> vars(table.vars().begin(), table.vars().end());</div><div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_vars = table.vars_size();</div><div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_original_tuples = table.values_size() / num_vars;</div><div class="line"><a name="l01263"></a><span class="lineno"> 1263</span> </div><div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  <span class="comment">// Read tuples flat array and recreate the vector of tuples.</span></div><div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>  std::vector<std::vector<int64_t>> tuples(num_original_tuples);</div><div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  <span class="keywordtype">int</span> count = 0;</div><div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> tuple_index = 0; tuple_index < num_original_tuples; ++tuple_index) {</div><div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index < num_vars; ++var_index) {</div><div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  tuples[tuple_index].push_back(table.values(count++));</div><div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  }</div><div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  }</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>  <span class="comment">// Compute the set of possible values for each variable (from the table).</span></div><div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>  <span class="comment">// Remove invalid tuples along the way.</span></div><div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  std::vector<absl::flat_hash_set<int64_t>> values_per_var(num_vars);</div><div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  <span class="keywordtype">int</span> new_size = 0;</div><div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> tuple_index = 0; tuple_index < num_original_tuples; ++tuple_index) {</div><div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  <span class="keywordtype">bool</span> keep = <span class="keyword">true</span>;</div><div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index < num_vars; ++var_index) {</div><div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = tuples[tuple_index][var_index];</div><div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(vars[var_index], <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)) {</div><div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  keep = <span class="keyword">false</span>;</div><div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  }</div><div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  }</div><div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  <span class="keywordflow">if</span> (keep) {</div><div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index < num_vars; ++var_index) {</div><div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  values_per_var[var_index].insert(tuples[tuple_index][var_index]);</div><div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>  }</div><div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  <a class="code" href="namespaceoperations__research_1_1math__opt.html#a5de89a1f6e3f80a49a0d76136d8044e2">std::swap</a>(tuples[tuple_index], tuples[new_size]);</div><div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  new_size++;</div><div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>  }</div><div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  }</div><div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>  tuples.resize(new_size);</div><div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_valid_tuples = tuples.size();</div><div class="line"><a name="l01296"></a><span class="lineno"> 1296</span> </div><div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>  <span class="keywordflow">if</span> (tuples.empty()) {</div><div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: empty"</span>);</div><div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  <span class="keywordflow">return</span> (<span class="keywordtype">void</span>)<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NotifyThatModelIsUnsat();</div><div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  }</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>  <span class="comment">// Update variable domains. It is redundant with presolve, but we could be</span></div><div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  <span class="comment">// here with presolve = false.</span></div><div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  <span class="comment">// Also counts the number of fixed variables.</span></div><div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>  <span class="keywordtype">int</span> num_fixed_variables = 0;</div><div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index < num_vars; ++var_index) {</div><div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(</div><div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>  vars[var_index],</div><div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>  <a class="code" href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">Domain::FromValues</a>({values_per_var[var_index].begin(),</div><div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>  values_per_var[var_index].end()})));</div><div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(vars[var_index]).IsFixed()) {</div><div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>  num_fixed_variables++;</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="keywordflow">if</span> (num_fixed_variables == num_vars - 1) {</div><div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: one variable not fixed"</span>);</div><div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (num_fixed_variables == num_vars) {</div><div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: all variables fixed"</span>);</div><div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  }</div><div class="line"><a name="l01325"></a><span class="lineno"> 1325</span> </div><div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>  <span class="comment">// Tables with two variables do not need tuple literals.</span></div><div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  <span class="keywordflow">if</span> (num_vars == 2) {</div><div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  AddSizeTwoTable(vars, tuples, values_per_var, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(</div><div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  <span class="stringliteral">"table: expanded positive constraint with two variables"</span>);</div><div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  }</div><div class="line"><a name="l01334"></a><span class="lineno"> 1334</span> </div><div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>  <span class="comment">// It is easier to compute this before compression, as compression will merge</span></div><div class="line"><a name="l01336"></a><span class="lineno"> 1336</span>  <span class="comment">// tuples.</span></div><div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  <span class="keywordtype">int</span> num_prefix_tuples = 0;</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>  absl::flat_hash_set<absl::Span<const int64_t>> prefixes;</div><div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::vector<int64_t>& tuple : tuples) {</div><div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  prefixes.insert(absl::MakeSpan(tuple.data(), num_vars - 1));</div><div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  }</div><div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  num_prefix_tuples = prefixes.size();</div><div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  }</div><div class="line"><a name="l01345"></a><span class="lineno"> 1345</span> </div><div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  <span class="comment">// TODO(user): reinvestigate ExploreSubsetOfVariablesAndAddNegatedTables.</span></div><div class="line"><a name="l01347"></a><span class="lineno"> 1347</span> </div><div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  <span class="comment">// Compress tuples.</span></div><div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  <span class="keyword">const</span> int64_t any_value = <a class="code" href="alldiff__cst_8cc.html#ad10edae0a852d72fb76afb1c77735045">std::numeric_limits<int64_t>::min</a>();</div><div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  std::vector<int64_t> domain_sizes;</div><div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < num_vars; ++i) {</div><div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  domain_sizes.push_back(values_per_var[i].size());</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>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_tuples_before_compression = tuples.size();</div><div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a441a154d125df2eb884a44be77e2bfc0">CompressTuples</a>(domain_sizes, any_value, &tuples);</div><div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_compressed_tuples = tuples.size();</div><div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  <span class="keywordflow">if</span> (num_compressed_tuples < num_tuples_before_compression) {</div><div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: compress tuples"</span>);</div><div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  }</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>  <span class="keywordflow">if</span> (num_compressed_tuples == 1) {</div><div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  <span class="comment">// Domains are propagated. We can remove the constraint.</span></div><div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: one tuple"</span>);</div><div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  <span class="keywordflow">return</span>;</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> </div><div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  <span class="comment">// Detect if prefix tuples are all different.</span></div><div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> prefixes_are_all_different = num_prefix_tuples == num_valid_tuples;</div><div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  <span class="keywordflow">if</span> (prefixes_are_all_different) {</div><div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(</div><div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  <span class="stringliteral">"TODO table: last value implied by previous values"</span>);</div><div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  }</div><div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  <span class="comment">// TODO(user): if 2 table constraints share the same valid prefix, the</span></div><div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  <span class="comment">// tuple literals can be reused.</span></div><div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  <span class="comment">// TODO(user): investigate different encoding for prefix tables. Maybe</span></div><div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  <span class="comment">// we can remove the need to create tuple literals.</span></div><div class="line"><a name="l01378"></a><span class="lineno"> 1378</span> </div><div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  <span class="comment">// Debug message to log the status of the expansion.</span></div><div class="line"><a name="l01380"></a><span class="lineno"> 1380</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="l01381"></a><span class="lineno"> 1381</span>  <span class="comment">// Compute the maximum number of prefix tuples.</span></div><div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  int64_t max_num_prefix_tuples = 1;</div><div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index + 1 < num_vars; ++var_index) {</div><div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  max_num_prefix_tuples =</div><div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  <a class="code" href="namespaceoperations__research.html#aa64bf49d041052c7cb3f40f7496d7534">CapProd</a>(max_num_prefix_tuples, values_per_var[var_index].size());</div><div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  }</div><div class="line"><a name="l01387"></a><span class="lineno"> 1387</span> </div><div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>  std::string <a class="code" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a> =</div><div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  absl::StrCat(<span class="stringliteral">"Table: "</span>, num_vars,</div><div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  <span class="stringliteral">" variables, original tuples = "</span>, num_original_tuples);</div><div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  <span class="keywordflow">if</span> (num_valid_tuples != num_original_tuples) {</div><div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  absl::StrAppend(&<a class="code" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", valid tuples = "</span>, num_valid_tuples);</div><div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  }</div><div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  <span class="keywordflow">if</span> (prefixes_are_all_different) {</div><div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  <span class="keywordflow">if</span> (num_prefix_tuples < max_num_prefix_tuples) {</div><div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  absl::StrAppend(&<a class="code" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", partial prefix = "</span>, num_prefix_tuples, <span class="stringliteral">"/"</span>,</div><div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  max_num_prefix_tuples);</div><div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  absl::StrAppend(&<a class="code" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", full prefix = true"</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>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  absl::StrAppend(&<a class="code" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>, <span class="stringliteral">", num prefix tuples = "</span>, num_prefix_tuples);</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> (num_compressed_tuples != num_valid_tuples) {</div><div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  absl::StrAppend(&<a class="code" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>,</div><div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>  <span class="stringliteral">", compressed tuples = "</span>, num_compressed_tuples);</div><div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  }</div><div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(2) << <a class="code" href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a>;</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="comment">// Log if we have only two tuples.</span></div><div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  <span class="keywordflow">if</span> (num_compressed_tuples == 2) {</div><div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"TODO table: two tuples"</span>);</div><div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  }</div><div class="line"><a name="l01415"></a><span class="lineno"> 1415</span> </div><div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  <span class="comment">// Create one Boolean variable per tuple to indicate if it can still be</span></div><div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  <span class="comment">// selected or not. Note that we don't enforce exactly one tuple to be</span></div><div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  <span class="comment">// selected as this is costly.</span></div><div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  std::vector<int> tuple_literals(num_compressed_tuples);</div><div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  BoolArgumentProto* exactly_one =</div><div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_exactly_one();</div><div class="line"><a name="l01422"></a><span class="lineno"> 1422</span> </div><div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index < num_compressed_tuples; ++var_index) {</div><div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  tuple_literals[var_index] = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NewBoolVar();</div><div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  exactly_one->add_literals(tuple_literals[var_index]);</div><div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  }</div><div class="line"><a name="l01427"></a><span class="lineno"> 1427</span> </div><div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  std::vector<int> active_tuple_literals;</div><div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  std::vector<int64_t> active_values;</div><div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  std::vector<int> any_tuple_literals;</div><div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index < num_vars; ++var_index) {</div><div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>  <span class="keywordflow">if</span> (values_per_var[var_index].size() == 1) <span class="keywordflow">continue</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>  active_tuple_literals.clear();</div><div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  active_values.clear();</div><div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>  any_tuple_literals.clear();</div><div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> tuple_index = 0; tuple_index < tuple_literals.size();</div><div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>  ++tuple_index) {</div><div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  <span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = tuples[tuple_index][var_index];</div><div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> tuple_literal = tuple_literals[tuple_index];</div><div class="line"><a name="l01441"></a><span class="lineno"> 1441</span> </div><div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> == any_value) {</div><div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  any_tuple_literals.push_back(tuple_literal);</div><div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>  active_tuple_literals.push_back(tuple_literal);</div><div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  active_values.push_back(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>  }</div><div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>  }</div><div class="line"><a name="l01449"></a><span class="lineno"> 1449</span> </div><div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>  <span class="keywordflow">if</span> (!active_tuple_literals.empty()) {</div><div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>  ProcessOneVariable(active_tuple_literals, active_values, vars[var_index],</div><div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>  any_tuple_literals, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</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>  }</div><div class="line"><a name="l01455"></a><span class="lineno"> 1455</span> </div><div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"table: expanded positive constraint"</span>);</div><div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01458"></a><span class="lineno"> 1458</span> }</div><div class="line"><a name="l01459"></a><span class="lineno"> 1459</span> </div><div class="line"><a name="l01460"></a><span class="lineno"> 1460</span> <span class="keywordtype">void</span> ExpandAllDiff(<span class="keywordtype">bool</span> expand_non_permutations, ConstraintProto* <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>,</div><div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>  PresolveContext* <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>) {</div><div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>  AllDifferentConstraintProto& <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a> = *<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->mutable_all_diff();</div><div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>  <span class="keywordflow">if</span> (<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars_size() <= 2) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01464"></a><span class="lineno"> 1464</span> </div><div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_vars = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars_size();</div><div class="line"><a name="l01466"></a><span class="lineno"> 1466</span> </div><div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>  Domain union_of_domains = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars(0));</div><div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < num_vars; ++i) {</div><div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  union_of_domains =</div><div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>  union_of_domains.UnionWith(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(<a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars(i)));</div><div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  }</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>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_a_permutation = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars_size() == union_of_domains.Size();</div><div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> has_small_domains =</div><div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>  (union_of_domains.Size() <= 2 * <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars_size()) ||</div><div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>  (union_of_domains.Size() <= 32);</div><div class="line"><a name="l01477"></a><span class="lineno"> 1477</span> </div><div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>  <span class="keywordflow">if</span> (!is_a_permutation && !has_small_domains && !expand_non_permutations) {</div><div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>  }</div><div class="line"><a name="l01481"></a><span class="lineno"> 1481</span> </div><div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>  <span class="comment">// Collect all possible variables that can take each value, and add one linear</span></div><div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>  <span class="comment">// equation per value stating that this value can be assigned at most once, or</span></div><div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>  <span class="comment">// exactly once in case of permutation.</span></div><div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t v : union_of_domains.Values()) {</div><div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>  <span class="comment">// Collect references which domain contains v.</span></div><div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>  std::vector<int> possible_refs;</div><div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>  <span class="keywordtype">int</span> fixed_variable_count = 0;</div><div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.vars()) {</div><div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(ref, v)) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>  possible_refs.push_back(ref);</div><div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(ref).IsFixed()) {</div><div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>  fixed_variable_count++;</div><div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  }</div><div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>  }</div><div class="line"><a name="l01496"></a><span class="lineno"> 1496</span> </div><div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>  <span class="keywordflow">if</span> (fixed_variable_count > 1) {</div><div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  <span class="comment">// Violates the definition of AllDifferent.</span></div><div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  <span class="keywordflow">return</span> (<span class="keywordtype">void</span>)<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NotifyThatModelIsUnsat();</div><div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (fixed_variable_count == 1) {</div><div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  <span class="comment">// Remove values from other domains.</span></div><div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : possible_refs) {</div><div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(ref).IsFixed()) <span class="keywordflow">continue</span>;</div><div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  <span class="keywordflow">if</span> (!<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->IntersectDomainWith(ref, Domain(v).Complement())) {</div><div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  <a class="code" href="base_2logging_8h.html#afcaa7cadd41741bb855c2ada1d2ef927">VLOG</a>(1) << <span class="stringliteral">"Empty domain for a variable in ExpandAllDiff()"</span>;</div><div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>  <span class="keywordflow">return</span>;</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"> 1509</span>  }</div><div class="line"><a name="l01510"></a><span class="lineno"> 1510</span> </div><div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  LinearConstraintProto* at_most_or_equal_one =</div><div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->add_constraints()->mutable_linear();</div><div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  <span class="keywordtype">int</span> lb = is_a_permutation ? 1 : 0;</div><div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>  <span class="keywordtype">int</span> ub = 1;</div><div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : possible_refs) {</div><div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  <a class="code" href="base_2logging_8h.html#ae17f8119c108cf3070bad3449c7e0006">DCHECK</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainContains(ref, v));</div><div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  <a class="code" href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(ref).Size(), 1);</div><div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> encoding = <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->GetOrCreateVarValueEncoding(ref, v);</div><div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>  <span class="keywordflow">if</span> (<a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(encoding)) {</div><div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  at_most_or_equal_one->add_vars(encoding);</div><div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  at_most_or_equal_one->add_coeffs(1);</div><div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>  at_most_or_equal_one->add_vars(<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(encoding));</div><div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  at_most_or_equal_one->add_coeffs(-1);</div><div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  lb--;</div><div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>  ub--;</div><div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  }</div><div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  }</div><div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  at_most_or_equal_one->add_domain(lb);</div><div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  at_most_or_equal_one->add_domain(ub);</div><div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  }</div><div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  <span class="keywordflow">if</span> (is_a_permutation) {</div><div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"alldiff: permutation expanded"</span>);</div><div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateRuleStats(<span class="stringliteral">"alldiff: expanded"</span>);</div><div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  }</div><div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->Clear();</div><div class="line"><a name="l01538"></a><span class="lineno"> 1538</span> }</div><div class="line"><a name="l01539"></a><span class="lineno"> 1539</span> </div><div class="line"><a name="l01540"></a><span class="lineno"> 1540</span> } <span class="comment">// namespace</span></div><div class="line"><a name="l01541"></a><span class="lineno"> 1541</span> </div><div class="line"><a name="l01542"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a4d700795b2500705ef3031ec994fe472"> 1542</a></span> <span class="keywordtype">void</span> <a class="code" href="namespaceoperations__research_1_1sat.html#a4d700795b2500705ef3031ec994fe472">ExpandCpModel</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>) {</div><div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->params().disable_constraint_expansion()) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->ModelIsUnsat()) <span class="keywordflow">return</span>;</div><div class="line"><a name="l01545"></a><span class="lineno"> 1545</span> </div><div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  <span class="comment">// None of the function here need to be run twice. This is because we never</span></div><div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  <span class="comment">// create constraint that need to be expanded during presolve.</span></div><div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->ModelIsExpanded()) <span class="keywordflow">return</span>;</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="comment">// Make sure all domains are initialized.</span></div><div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->InitializeNewDomains();</div><div class="line"><a name="l01552"></a><span class="lineno"> 1552</span> </div><div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  <span class="comment">// Clear the precedence cache.</span></div><div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->ClearPrecedenceCache();</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>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->constraints_size(); ++i) {</div><div class="line"><a name="l01557"></a><span class="lineno"> 1557</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="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->mutable_constraints(i);</div><div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  <span class="keywordtype">bool</span> skip = <span class="keyword">false</span>;</div><div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  <span class="keywordflow">switch</span> (<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->constraint_case()) {</div><div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kReservoir:</div><div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->params().expand_reservoir_constraints()) {</div><div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  ExpandReservoir(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</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>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kIntMod:</div><div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  ExpandIntMod(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kIntDiv:</div><div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  ExpandIntDiv(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kIntProd:</div><div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  ExpandIntProd(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kLinMin:</div><div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>  ExpandLinMin(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kElement:</div><div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->params().expand_element_constraints()) {</div><div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>  ExpandElement(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</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="keywordflow">break</span>;</div><div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kInverse:</div><div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>  ExpandInverse(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kAutomaton:</div><div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->params().expand_automaton_constraints()) {</div><div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>  ExpandAutomaton(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</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">break</span>;</div><div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kTable:</div><div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->table().negated()) {</div><div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>  ExpandNegativeTable(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->params().expand_table_constraints()) {</div><div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>  ExpandPositiveTable(<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>, <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>  }</div><div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>  <span class="keywordflow">case</span> ConstraintProto::ConstraintCase::kAllDiff:</div><div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>  ExpandAllDiff(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->params().expand_alldiff_constraints(), <a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>,</div><div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>);</div><div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>  <span class="keywordflow">default</span>:</div><div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>  skip = <span class="keyword">true</span>;</div><div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>  }</div><div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>  <span class="keywordflow">if</span> (skip) <span class="keywordflow">continue</span>; <span class="comment">// Nothing was done for this constraint.</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>  <span class="comment">// Update variable-constraint graph.</span></div><div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateNewConstraintsVariableUsage();</div><div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>->constraint_case() == <a class="code" href="classoperations__research_1_1sat_1_1_constraint_proto.html#ada030f50fcddb646af448ac7c5705e35a7af079189afb65e704861b8cdfb301f4">ConstraintProto::CONSTRAINT_NOT_SET</a>) {</div><div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->UpdateConstraintVariableUsage(i);</div><div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>  }</div><div class="line"><a name="l01612"></a><span class="lineno"> 1612</span> </div><div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>  <span class="comment">// Early exit if the model is unsat.</span></div><div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>  <span class="keywordflow">if</span> (<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->ModelIsUnsat()) {</div><div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>  <a class="code" href="util_2logging_8h.html#a5f67b653dd99ddbe5e3367e3b4b7b532">SOLVER_LOG</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->logger(), <span class="stringliteral">"UNSAT after expansion of "</span>,</div><div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>  <a class="code" href="namespaceoperations__research.html#a87d7aa58897e0042898d1c2207deda18">ProtobufShortDebugString</a>(*<a class="code" href="demon__profiler_8cc.html#a05da18ca9c7b657a4a6ea24e07c9b695">ct</a>));</div><div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>  }</div><div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>  }</div><div class="line"><a name="l01620"></a><span class="lineno"> 1620</span> </div><div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>  <span class="comment">// The precedence cache can become invalid during presolve as it does not</span></div><div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>  <span class="comment">// handle variable substitution. It is safer just to clear it at the end</span></div><div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>  <span class="comment">// of the expansion phase.</span></div><div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->ClearPrecedenceCache();</div><div class="line"><a name="l01625"></a><span class="lineno"> 1625</span> </div><div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>  <span class="comment">// Make sure the context is consistent.</span></div><div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->InitializeNewDomains();</div><div class="line"><a name="l01628"></a><span class="lineno"> 1628</span> </div><div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>  <span class="comment">// Update any changed domain from the context.</span></div><div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->variables_size(); ++i) {</div><div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a901c19b12842f8af153e588a689a90b5">FillDomainInProto</a>(<a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->DomainOf(i),</div><div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->working_model->mutable_variables(i));</div><div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>  }</div><div class="line"><a name="l01634"></a><span class="lineno"> 1634</span> </div><div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>  <a class="code" href="gurobi__interface_8cc.html#a5f287b83a753915ae862fed64f8640a6">context</a>->NotifyThatModelIsExpanded();</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="comment">// namespace sat</span></div><div class="line"><a name="l01639"></a><span class="lineno"> 1639</span> } <span class="comment">// namespace operations_research</span></div><div class="ttc" id="routing__flow_8cc_html_afca32f65388659a4b0956496169488b4"><div class="ttname"><a href="routing__flow_8cc.html#afca32f65388659a4b0956496169488b4">head</a></div><div class="ttdeci">int64_t head</div><div class="ttdef"><b>Definition:</b> <a href="routing__flow_8cc_source.html#l00150">routing_flow.cc:150</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="namespaceoperations__research_html_a4a43d435871f16c321861fa5de32df82"><div class="ttname"><a href="namespaceoperations__research.html#a4a43d435871f16c321861fa5de32df82">operations_research::CapSub</a></div><div class="ttdeci">int64_t CapSub(int64_t x, int64_t y)</div><div class="ttdef"><b>Definition:</b> <a href="saturated__arithmetic_8h_source.html#l00156">saturated_arithmetic.h:156</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="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="stl__util_8h_html"><div class="ttname"><a href="stl__util_8h.html">stl_util.h</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="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="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="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="hash_8h_html"><div class="ttname"><a href="hash_8h.html">hash.h</a></div></div>
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<div class="ttc" id="namespacegtl_html_a288a1dc92da5d3ad62d4bc4cec9e8b1d"><div class="ttname"><a href="namespacegtl.html#a288a1dc92da5d3ad62d4bc4cec9e8b1d">gtl::STLSortAndRemoveDuplicates</a></div><div class="ttdeci">void STLSortAndRemoveDuplicates(T *v, const LessFunc &less_func)</div><div class="ttdef"><b>Definition:</b> <a href="stl__util_8h_source.html#l00058">stl_util.h:58</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_ab4f56aa24c4c9cddc47a6abd2d747f9a"><div class="ttname"><a href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a></div><div class="ttdeci">#define DCHECK_GT(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00891">base/logging.h:891</a></div></div>
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<div class="ttc" id="routing__flow_8cc_html_a64e7efc5529154ba56903e75f5300990"><div class="ttname"><a href="routing__flow_8cc.html#a64e7efc5529154ba56903e75f5300990">tail</a></div><div class="ttdeci">int64_t tail</div><div class="ttdef"><b>Definition:</b> <a href="routing__flow_8cc_source.html#l00149">routing_flow.cc:149</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="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="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="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_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_ac2d88de67793063ad5f5e923ffd1c0eb"><div class="ttname"><a href="classoperations__research_1_1_domain.html#ac2d88de67793063ad5f5e923ffd1c0eb">operations_research::Domain::FromValues</a></div><div class="ttdeci">static Domain FromValues(std::vector< int64_t > values)</div><div class="ttdoc">Creates a domain from the union of an unsorted list of integer values.</div><div class="ttdef"><b>Definition:</b> <a href="sorted__interval__list_8cc_source.html#l00138">sorted_interval_list.cc:138</a></div></div>
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<div class="ttc" id="sorted__interval__list_8h_html"><div class="ttname"><a href="sorted__interval__list_8h.html">sorted_interval_list.h</a></div></div>
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<div class="ttc" id="namespaceoperations__research_1_1sat_html_a4d700795b2500705ef3031ec994fe472"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a4d700795b2500705ef3031ec994fe472">operations_research::sat::ExpandCpModel</a></div><div class="ttdeci">void ExpandCpModel(PresolveContext *context)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__expand_8cc_source.html#l01542">cp_model_expand.cc:1542</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="resource_8cc_html_a29fb0dd9484d890b12b280c41c150e20"><div class="ttname"><a href="resource_8cc.html#a29fb0dd9484d890b12b280c41c150e20">demand</a></div><div class="ttdeci">int64_t demand</div><div class="ttdef"><b>Definition:</b> <a href="resource_8cc_source.html#l00125">resource.cc:125</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="cp__model__utils_8h_html"><div class="ttname"><a href="cp__model__utils_8h.html">cp_model_utils.h</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="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="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="trace_8cc_html_a36bd74109f547f7f8198faf5a12d2879"><div class="ttname"><a href="trace_8cc.html#a36bd74109f547f7f8198faf5a12d2879">message</a></div><div class="ttdeci">std::string message</div><div class="ttdef"><b>Definition:</b> <a href="trace_8cc_source.html#l00398">trace.cc:398</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="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="classoperations__research_1_1sat_1_1_cp_model_proto_html_a934d9868f4bfcada979a310ea97ce987"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_cp_model_proto.html#a934d9868f4bfcada979a310ea97ce987">operations_research::sat::CpModelProto::swap</a></div><div class="ttdeci">friend void swap(CpModelProto &a, CpModelProto &b)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l06021">cp_model.pb.h:6021</a></div></div>
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<div class="ttc" id="sat_2util_8h_html"><div class="ttname"><a href="sat_2util_8h.html">util.h</a></div></div>
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<div class="ttc" id="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="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_constraint_proto_html_ada030f50fcddb646af448ac7c5705e35a7af079189afb65e704861b8cdfb301f4"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_constraint_proto.html#ada030f50fcddb646af448ac7c5705e35a7af079189afb65e704861b8cdfb301f4">operations_research::sat::ConstraintProto::CONSTRAINT_NOT_SET</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model_8pb_8h_source.html#l03931">cp_model.pb.h:3931</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"><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="namespaceoperations__research_html_a87d7aa58897e0042898d1c2207deda18"><div class="ttname"><a href="namespaceoperations__research.html#a87d7aa58897e0042898d1c2207deda18">operations_research::ProtobufShortDebugString</a></div><div class="ttdeci">std::string ProtobufShortDebugString(const P &message)</div><div class="ttdef"><b>Definition:</b> <a href="port_2proto__utils_8h_source.html#l00037">port/proto_utils.h:37</a></div></div>
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<div class="ttc" id="cp__model_8pb_8h_html"><div class="ttname"><a href="cp__model_8pb_8h.html">cp_model.pb.h</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="resource_8cc_html_aee52de7b225665566aa47246b9d6b8fa"><div class="ttname"><a href="resource_8cc.html#aee52de7b225665566aa47246b9d6b8fa">time</a></div><div class="ttdeci">int64_t time</div><div class="ttdef"><b>Definition:</b> <a href="resource_8cc_source.html#l01691">resource.cc:1691</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="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="namespaceoperations__research_1_1sat_html_a441a154d125df2eb884a44be77e2bfc0"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a441a154d125df2eb884a44be77e2bfc0">operations_research::sat::CompressTuples</a></div><div class="ttdeci">void CompressTuples(absl::Span< const int64_t > domain_sizes, int64_t any_value, std::vector< std::vector< int64_t >> *tuples)</div><div class="ttdef"><b>Definition:</b> <a href="sat_2util_8cc_source.html#l00113">sat/util.cc:113</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="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="cp__model__expand_8h_html"><div class="ttname"><a href="cp__model__expand_8h.html">cp_model_expand.h</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="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="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="namespaceoperations__research_1_1sat_html_a22efb1995471e34caa35927a9032f5f3"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a22efb1995471e34caa35927a9032f5f3">operations_research::sat::SetToNegatedLinearExpression</a></div><div class="ttdeci">void SetToNegatedLinearExpression(const LinearExpressionProto &input_expr, LinearExpressionProto *output_negated_expr)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8cc_source.html#l00034">cp_model_utils.cc:34</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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