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179 lines
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<a href="default__search_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 <cstddef></span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include <cstdint></span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <functional></span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <limits></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <memory></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <string></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <utility></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <vector></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "absl/container/flat_hash_set.h"</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "absl/strings/str_format.h"</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="commandlineflags_8h.html">ortools/base/commandlineflags.h</a>"</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="integral__types_8h.html">ortools/base/integral_types.h</a>"</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">ortools/base/macros.h</a>"</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</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="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="constraint__solver_8h.html">ortools/constraint_solver/constraint_solver.h</a>"</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="constraint__solveri_8h.html">ortools/constraint_solver/constraint_solveri.h</a>"</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="cached__log_8h.html">ortools/util/cached_log.h</a>"</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="string__array_8h.html">ortools/util/string_array.h</a>"</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <a class="code" href="default__search_8cc.html#acd458c8d08db2d8b1bd2dce9a4307208">ABSL_FLAG</a>(<span class="keywordtype">int</span>, cp_impact_divider, 10, <span class="stringliteral">"Divider for continuous update."</span>);</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span>{</div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// Default constants for search phase parameters.</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefaultNumberOfSplits = 100;</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefaultHeuristicPeriod = 100;</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">const</span> <span class="keywordtype">int</span> kDefaultHeuristicNumFailuresLimit = 30;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">const</span> <span class="keywordtype">bool</span> kDefaultUseLastConflict = <span class="keyword">true</span>;</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> } <span class="comment">// namespace</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="structoperations__research_1_1_default_phase_parameters.html#a0d757e1829bae7762734bce78136a139"> 47</a></span> <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a0d757e1829bae7762734bce78136a139">DefaultPhaseParameters::DefaultPhaseParameters</a>()</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  : var_selection_schema(<a class="code" href="structoperations__research_1_1_default_phase_parameters.html">DefaultPhaseParameters</a>::CHOOSE_MAX_SUM_IMPACT),</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  value_selection_schema(<a class="code" href="structoperations__research_1_1_default_phase_parameters.html">DefaultPhaseParameters</a>::SELECT_MIN_IMPACT),</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  initialization_splits(kDefaultNumberOfSplits),</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  run_all_heuristics(true),</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  heuristic_period(kDefaultHeuristicPeriod),</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  heuristic_num_failures_limit(kDefaultHeuristicNumFailuresLimit),</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  persistent_impact(true),</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  random_seed(<a class="code" href="namespaceoperations__research.html#a6daa2481a6bbd7b307647006a8752630">CpRandomSeed</a>()),</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  display_level(<a class="code" href="structoperations__research_1_1_default_phase_parameters.html">DefaultPhaseParameters</a>::NORMAL),</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  use_last_conflict(kDefaultUseLastConflict),</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  decision_builder(nullptr) {}</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">namespace </span>{</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// ----- DomainWatcher -----</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// This class follows the domains of variables and will report the log of the</span></div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">// search space of all integer variables.</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">class </span>DomainWatcher {</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  DomainWatcher(<span class="keyword">const</span> std::vector<IntVar*>& vars, <span class="keywordtype">int</span> cache_size)</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  : <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>(vars) {</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  cached_log_.Init(cache_size);</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">double</span> LogSearchSpaceSize() {</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordtype">double</span> result = 0.0;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = 0; <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> < <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>.size(); ++<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  result += cached_log_.Log2(vars_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]->Size());</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">return</span> result;</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordtype">double</span> Log2(int64_t size)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> cached_log_.Log2(size); }</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  std::vector<IntVar*> <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>;</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  CachedLog cached_log_;</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(DomainWatcher);</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> };</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">// ---------- FindVar decision visitor ---------</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keyword">class </span>FindVar : <span class="keyword">public</span> DecisionVisitor {</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">enum</span> Operation { NONE, ASSIGN, SPLIT_LOW, SPLIT_HIGH };</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  FindVar() : var_(nullptr), value_(0), operation_(NONE) {}</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  ~FindVar()<span class="keyword"> override </span>{}</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>  <span class="keywordtype">void</span> VisitSetVariableValue(IntVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>)<span class="keyword"> override </span>{</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  var_ = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>;</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  value_ = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  operation_ = ASSIGN;</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">void</span> VisitSplitVariableDomain(IntVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>,</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordtype">bool</span> start_with_lower_half)<span class="keyword"> override </span>{</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  var_ = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>;</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  value_ = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  operation_ = start_with_lower_half ? SPLIT_LOW : SPLIT_HIGH;</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">void</span> VisitScheduleOrPostpone(IntervalVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, int64_t est)<span class="keyword"> override </span>{</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  operation_ = NONE;</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  }</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> VisitTryRankFirst(SequenceVar* <span class="keyword">const</span> sequence, <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  operation_ = NONE;</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</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">virtual</span> <span class="keywordtype">void</span> VisitTryRankLast(SequenceVar* <span class="keyword">const</span> sequence, <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  operation_ = NONE;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordtype">void</span> VisitUnknownDecision()<span class="keyword"> override </span>{ operation_ = NONE; }</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>  <span class="comment">// Returns the current variable.</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  IntVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(operation_, NONE);</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">return</span> var_;</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// Returns the value of the current variable.</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>()<span class="keyword"> const </span>{</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <a class="code" href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a>(operation_, NONE);</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> value_;</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  Operation operation()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> operation_; }</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  std::string DebugString()<span class="keyword"> const override </span>{</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">return</span> <span class="stringliteral">"FindVar decision visitor"</span>;</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> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  IntVar* var_;</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  int64_t value_;</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  Operation operation_;</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</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> <span class="comment">// ----- Auxiliary decision builders to init impacts -----</span></div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment">// This class initialize impacts by scanning each value of the domain</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment">// of the variable.</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">class </span>InitVarImpacts : <span class="keyword">public</span> DecisionBuilder {</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// ----- main -----</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  InitVarImpacts()</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  : var_(nullptr),</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  update_impact_callback_(nullptr),</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  new_start_(false),</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  var_index_(0),</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  value_index_(-1),</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  update_impact_closure_([this]() { UpdateImpacts(); }),</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  updater_(update_impact_closure_) {</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(update_impact_closure_ != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  ~InitVarImpacts()<span class="keyword"> override </span>{}</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="keywordtype">void</span> UpdateImpacts() {</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">// the Min is always the value we just set.</span></div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  update_impact_callback_(var_index_, var_->Min());</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordtype">void</span> Init(IntVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, IntVarIterator* <span class="keyword">const</span> iterator, <span class="keywordtype">int</span> var_index) {</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  var_ = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <a class="code" href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a> = iterator;</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  var_index_ = var_index;</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  new_start_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  value_index_ = 0;</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  }</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span> </div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  Decision* Next(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(var_ != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(<a class="code" href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a> != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">if</span> (new_start_) {</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  active_values_.clear();</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> : InitAndGetValues(<a class="code" href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a>)) {</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  active_values_.push_back(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  }</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  new_start_ = <span class="keyword">false</span>;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  }</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">if</span> (value_index_ == active_values_.size()) {</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  updater_.var_ = var_;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  updater_.value_ = active_values_[value_index_];</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  value_index_++;</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">return</span> &updater_;</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordtype">void</span> set_update_impact_callback(std::function<<span class="keywordtype">void</span>(<span class="keywordtype">int</span>, int64_t)> <a class="code" href="gurobi__interface_8cc.html#a6627a3800ac768bb5528ef54c9cace36">callback</a>) {</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  update_impact_callback_ = std::move(<a class="code" href="gurobi__interface_8cc.html#a6627a3800ac768bb5528ef54c9cace36">callback</a>);</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="comment">// ----- helper decision -----</span></div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">class </span>AssignCallFail : <span class="keyword">public</span> Decision {</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">explicit</span> AssignCallFail(<span class="keyword">const</span> std::function<<span class="keywordtype">void</span>()>& update_impact_closure)</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  : var_(nullptr),</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  value_(0),</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  update_impact_closure_(update_impact_closure) {</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(update_impact_closure_ != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  ~AssignCallFail()<span class="keyword"> override </span>{}</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordtype">void</span> Apply(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(var_ != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  var_->SetValue(value_);</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="comment">// We call the closure on the part that cannot fail.</span></div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  update_impact_closure_();</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  solver->Fail();</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>  <span class="keywordtype">void</span> Refute(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{}</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="comment">// Public data for easy access.</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  IntVar* var_;</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  int64_t value_;</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keyword">const</span> std::function<void()>& update_impact_closure_;</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(AssignCallFail);</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  };</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  IntVar* var_;</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  std::function<void(<span class="keywordtype">int</span>, int64_t)> update_impact_callback_;</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordtype">bool</span> new_start_;</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  IntVarIterator* <a class="code" href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a>;</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">int</span> var_index_;</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  std::vector<int64_t> active_values_;</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordtype">int</span> value_index_;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  std::function<void()> update_impact_closure_;</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  AssignCallFail updater_;</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> };</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="comment">// This class initialize impacts by scanning at most 'split_size'</span></div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment">// intervals on the domain of the variable.</span></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="keyword">class </span>InitVarImpactsWithSplits : <span class="keyword">public</span> DecisionBuilder {</div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// ----- helper decision -----</span></div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">class </span>AssignIntervalCallFail : <span class="keyword">public</span> Decision {</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keyword">explicit</span> AssignIntervalCallFail(</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keyword">const</span> std::function<<span class="keywordtype">void</span>()>& update_impact_closure)</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  : var_(nullptr),</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <a class="code" href="default__search_8cc.html#ad71cbb5360015a4f49c6abdb18300912">value_min_</a>(0),</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <a class="code" href="default__search_8cc.html#a940303dc6f65110527ad84ac3c1d7232">value_max_</a>(0),</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  update_impact_closure_(update_impact_closure) {</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(update_impact_closure_ != <span class="keyword">nullptr</span>);</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>  ~AssignIntervalCallFail()<span class="keyword"> override </span>{}</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordtype">void</span> Apply(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(var_ != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  var_->SetRange(<a class="code" href="default__search_8cc.html#ad71cbb5360015a4f49c6abdb18300912">value_min_</a>, <a class="code" href="default__search_8cc.html#a940303dc6f65110527ad84ac3c1d7232">value_max_</a>);</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="comment">// We call the closure on the part that cannot fail.</span></div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  update_impact_closure_();</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  solver->Fail();</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  }</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordtype">void</span> Refute(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{}</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span> </div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="comment">// Public for easy access.</span></div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  IntVar* var_;</div><div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="default__search_8cc.html#ad71cbb5360015a4f49c6abdb18300912"> 272</a></span>  int64_t <a class="code" href="default__search_8cc.html#ad71cbb5360015a4f49c6abdb18300912">value_min_</a>;</div><div class="line"><a name="l00273"></a><span class="lineno"><a class="line" href="default__search_8cc.html#a940303dc6f65110527ad84ac3c1d7232"> 273</a></span>  int64_t <a class="code" href="default__search_8cc.html#a940303dc6f65110527ad84ac3c1d7232">value_max_</a>;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keyword">const</span> std::function<void()>& update_impact_closure_;</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(AssignIntervalCallFail);</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  };</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span> </div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="comment">// ----- main -----</span></div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> </div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keyword">explicit</span> InitVarImpactsWithSplits(<span class="keywordtype">int</span> split_size)</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  : var_(nullptr),</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  update_impact_callback_(nullptr),</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  new_start_(false),</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  var_index_(0),</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  min_value_(0),</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  max_value_(0),</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  split_size_(split_size),</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  split_index_(-1),</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  update_impact_closure_([this]() { UpdateImpacts(); }),</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  updater_(update_impact_closure_) {</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(update_impact_closure_ != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  }</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  ~InitVarImpactsWithSplits()<span class="keyword"> override </span>{}</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordtype">void</span> UpdateImpacts() {</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> : InitAndGetValues(<a class="code" href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a>)) {</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  update_impact_callback_(var_index_, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  }</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  }</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> </div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordtype">void</span> Init(IntVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, IntVarIterator* <span class="keyword">const</span> iterator, <span class="keywordtype">int</span> var_index) {</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  var_ = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>;</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <a class="code" href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a> = iterator;</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  var_index_ = var_index;</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  new_start_ = <span class="keyword">true</span>;</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  split_index_ = 0;</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  }</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> </div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  int64_t IntervalStart(<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)<span class="keyword"> const </span>{</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keyword">const</span> int64_t length = max_value_ - min_value_ + 1;</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">return</span> (min_value_ + length * <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> / split_size_);</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  }</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  Decision* Next(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{</div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">if</span> (new_start_) {</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  min_value_ = var_->Min();</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  max_value_ = var_->Max();</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  new_start_ = <span class="keyword">false</span>;</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  }</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">if</span> (split_index_ == split_size_) {</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  updater_.var_ = var_;</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  updater_.value_min_ = IntervalStart(split_index_);</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  split_index_++;</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordflow">if</span> (split_index_ == split_size_) {</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  updater_.value_max_ = max_value_;</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  updater_.value_max_ = IntervalStart(split_index_) - 1;</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  }</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="keywordflow">return</span> &updater_;</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  }</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span> </div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordtype">void</span> set_update_impact_callback(std::function<<span class="keywordtype">void</span>(<span class="keywordtype">int</span>, int64_t)> <a class="code" href="gurobi__interface_8cc.html#a6627a3800ac768bb5528ef54c9cace36">callback</a>) {</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  update_impact_callback_ = std::move(<a class="code" href="gurobi__interface_8cc.html#a6627a3800ac768bb5528ef54c9cace36">callback</a>);</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> </div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  IntVar* var_;</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  std::function<void(<span class="keywordtype">int</span>, int64_t)> update_impact_callback_;</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordtype">bool</span> new_start_;</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  IntVarIterator* <a class="code" href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a>;</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordtype">int</span> var_index_;</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  int64_t min_value_;</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  int64_t max_value_;</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> split_size_;</div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordtype">int</span> split_index_;</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  std::function<void()> update_impact_closure_;</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  AssignIntervalCallFail updater_;</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span> };</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> </div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="comment">// ----- ImpactRecorder</span></div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment">// This class will record the impacts of all assignment of values to</span></div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> <span class="comment">// variables. Its main output is to find the optimal pair (variable/value)</span></div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="comment">// based on default phase parameters.</span></div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="keyword">class </span>ImpactRecorder : <span class="keyword">public</span> SearchMonitor {</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00362"></a><span class="lineno"><a class="line" href="default__search_8cc.html#aba93685cfc7625455dbc4c61f87e78c8"> 362</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="default__search_8cc.html#aba93685cfc7625455dbc4c61f87e78c8">kLogCacheSize</a>;</div><div class="line"><a name="l00363"></a><span class="lineno"><a class="line" href="default__search_8cc.html#adb8d98fb250deb02563f7398be4e58f9"> 363</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#adb8d98fb250deb02563f7398be4e58f9">kPerfectImpact</a>;</div><div class="line"><a name="l00364"></a><span class="lineno"><a class="line" href="default__search_8cc.html#a89b1a79ac848480ee3ab0e701fa72e38"> 364</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#a89b1a79ac848480ee3ab0e701fa72e38">kFailureImpact</a>;</div><div class="line"><a name="l00365"></a><span class="lineno"><a class="line" href="default__search_8cc.html#ac6de7efc20e1cd7befb81b9afd77d777"> 365</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#ac6de7efc20e1cd7befb81b9afd77d777">kInitFailureImpact</a>;</div><div class="line"><a name="l00366"></a><span class="lineno"><a class="line" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890"> 366</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a>;</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span> </div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  ImpactRecorder(Solver* <span class="keyword">const</span> solver, DomainWatcher* <span class="keyword">const</span> domain_watcher,</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keyword">const</span> std::vector<IntVar*>& vars,</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382">DefaultPhaseParameters::DisplayLevel</a> display_level)</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  : SearchMonitor(solver),</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  domain_watcher_(domain_watcher),</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>(vars),</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  size_(vars.size()),</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  current_log_space_(0.0),</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  impacts_(size_),</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  original_min_(size_, 0LL),</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  domain_iterators_(new IntVarIterator*[size_]),</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  display_level_(display_level),</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  current_var_(<a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a>),</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  current_value_(0),</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  init_done_(false) {</div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size_; ++i) {</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  domain_iterators_[i] = <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i]->MakeDomainIterator(<span class="keyword">true</span>);</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  var_map_[<a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i]] = i;</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> </div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordtype">void</span> ApplyDecision(Decision* <span class="keyword">const</span> d)<span class="keyword"> override </span>{</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">if</span> (!init_done_) {</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  }</div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  d->Accept(&find_var_);</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">if</span> (find_var_.operation() == FindVar::ASSIGN &&</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <a class="code" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(var_map_, find_var_.var())) {</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  current_var_ = var_map_[find_var_.var()];</div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  current_value_ = find_var_.value();</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  current_log_space_ = domain_watcher_->LogSearchSpaceSize();</div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  current_var_ = <a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a>;</div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  current_value_ = 0;</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  }</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  }</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span> </div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keywordtype">void</span> AfterDecision(Decision* <span class="keyword">const</span> d, <span class="keywordtype">bool</span> apply)<span class="keyword"> override </span>{</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keywordflow">if</span> (init_done_ && current_var_ != <a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a>) {</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="keywordflow">if</span> (current_log_space_ > 0.0) {</div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> log_space = domain_watcher_->LogSearchSpaceSize();</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">if</span> (apply) {</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> impact = <a class="code" href="default__search_8cc.html#adb8d98fb250deb02563f7398be4e58f9">kPerfectImpact</a> - log_space / current_log_space_;</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  UpdateImpact(current_var_, current_value_, impact);</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  current_var_ = <a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a>;</div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  current_value_ = 0;</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>  current_log_space_ = log_space;</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  }</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  }</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  }</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span> </div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordtype">void</span> BeginFail()<span class="keyword"> override </span>{</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">if</span> (init_done_ && current_var_ != <a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a>) {</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  UpdateImpact(current_var_, current_value_, <a class="code" href="default__search_8cc.html#a89b1a79ac848480ee3ab0e701fa72e38">kFailureImpact</a>);</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  current_var_ = <a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a>;</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  current_value_ = 0;</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  }</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  }</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span> </div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordtype">void</span> ResetAllImpacts() {</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size_; ++i) {</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  original_min_[i] = <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i]->Min();</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="comment">// By default, we init impacts to 2.0 -> equivalent to failure.</span></div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">// This will be overwritten to real impact values on valid domain</span></div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="comment">// values during the FirstRun() method.</span></div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  impacts_[i].resize(vars_[i]->Max() - vars_[i]->Min() + 1,</div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <a class="code" href="default__search_8cc.html#ac6de7efc20e1cd7befb81b9afd77d777">kInitFailureImpact</a>);</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="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < size_; ++i) {</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j < impacts_[i].size(); ++j) {</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  impacts_[i][j] = <a class="code" href="default__search_8cc.html#ac6de7efc20e1cd7befb81b9afd77d777">kInitFailureImpact</a>;</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  }</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  }</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  }</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keywordtype">void</span> UpdateImpact(<span class="keywordtype">int</span> var_index, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, <span class="keywordtype">double</span> impact) {</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keyword">const</span> int64_t value_index = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> - original_min_[var_index];</div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> current_impact = impacts_[var_index][value_index];</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> new_impact =</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  (current_impact * (absl::GetFlag(FLAGS_cp_impact_divider) - 1) +</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  impact) /</div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  absl::GetFlag(FLAGS_cp_impact_divider);</div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  impacts_[var_index][value_index] = new_impact;</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> InitImpact(<span class="keywordtype">int</span> var_index, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> log_space = domain_watcher_->LogSearchSpaceSize();</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> impact = <a class="code" href="default__search_8cc.html#adb8d98fb250deb02563f7398be4e58f9">kPerfectImpact</a> - log_space / current_log_space_;</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keyword">const</span> int64_t value_index = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> - original_min_[var_index];</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <a class="code" href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a>(var_index, size_);</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <a class="code" href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a>(value_index, impacts_[var_index].size());</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  impacts_[var_index][value_index] = impact;</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  init_count_++;</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  }</div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span> </div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="keywordtype">void</span> FirstRun(int64_t splits) {</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  Solver* <span class="keyword">const</span> s = solver();</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  current_log_space_ = domain_watcher_->LogSearchSpaceSize();</div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keywordflow">if</span> (display_level_ != <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ac157bdf0b85a40d2619cbc8bc1ae5fe2">DefaultPhaseParameters::NONE</a>) {</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">" - initial log2(SearchSpace) = "</span> << current_log_space_;</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  }</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  <span class="keyword">const</span> int64_t init_time = s->wall_time();</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  ResetAllImpacts();</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  int64_t removed_counter = 0;</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  FirstRunVariableContainers* container =</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  s->RevAlloc(<span class="keyword">new</span> FirstRunVariableContainers(<span class="keyword">this</span>, splits));</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="comment">// Loop on the variables, scan domains and initialize impacts.</span></div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> var_index = 0; var_index < size_; ++var_index) {</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  IntVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[var_index];</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="keywordflow">if</span> (<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>->Bound()) {</div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keywordflow">continue</span>;</div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  }</div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  IntVarIterator* <span class="keyword">const</span> iterator = domain_iterators_[var_index];</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  DecisionBuilder* init_decision_builder = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> no_split = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>->Size() < splits;</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keywordflow">if</span> (no_split) {</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="comment">// The domain is small enough, we scan it completely.</span></div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  container->without_split()->set_update_impact_callback(</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  container->update_impact_callback());</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  container->without_split()->Init(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, iterator, var_index);</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  init_decision_builder = container->without_split();</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="comment">// The domain is too big, we scan it in initialization_splits</span></div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="comment">// intervals.</span></div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  container->with_splits()->set_update_impact_callback(</div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  container->update_impact_callback());</div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  container->with_splits()->Init(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, iterator, var_index);</div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  init_decision_builder = container->with_splits();</div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  }</div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="comment">// Reset the number of impacts initialized.</span></div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  init_count_ = 0;</div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="comment">// Use Solve() to scan all values of one variable.</span></div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  s->Solve(init_decision_builder);</div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span> </div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="comment">// If we have not initialized all values, then they can be removed.</span></div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="comment">// As the iterator is not stable w.r.t. deletion, we need to store</span></div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  <span class="comment">// removed values in an intermediate vector.</span></div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordflow">if</span> (init_count_ != <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>->Size() && no_split) {</div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  container->ClearRemovedValues();</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> : InitAndGetValues(iterator)) {</div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keyword">const</span> int64_t value_index = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> - original_min_[var_index];</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keywordflow">if</span> (impacts_[var_index][value_index] == <a class="code" href="default__search_8cc.html#ac6de7efc20e1cd7befb81b9afd77d777">kInitFailureImpact</a>) {</div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  container->PushBackRemovedValue(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  }</div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  }</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(container->HasRemovedValues()) << <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>->DebugString();</div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  removed_counter += container->NumRemovedValues();</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> old_log = domain_watcher_->Log2(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>->Size());</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>->RemoveValues(container->removed_values());</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  current_log_space_ += domain_watcher_->Log2(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>->Size()) - old_log;</div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  }</div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  }</div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="keywordflow">if</span> (display_level_ != <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ac157bdf0b85a40d2619cbc8bc1ae5fe2">DefaultPhaseParameters::NONE</a>) {</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="keywordflow">if</span> (removed_counter) {</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">" - init done, time = "</span> << s->wall_time() - init_time</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  << <span class="stringliteral">" ms, "</span> << removed_counter</div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  << <span class="stringliteral">" values removed, log2(SearchSpace) = "</span></div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  << current_log_space_;</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">" - init done, time = "</span> << s->wall_time() - init_time</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  << <span class="stringliteral">" ms"</span>;</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  }</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  }</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  s->SaveAndSetValue(&init_done_, <span class="keyword">true</span>);</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  }</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span> </div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="comment">// This method scans the domain of one variable and returns the sum</span></div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="comment">// of the impacts of all values in its domain, along with the value</span></div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="comment">// with minimal impact.</span></div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  <span class="keywordtype">void</span> ScanVarImpacts(<span class="keywordtype">int</span> var_index, int64_t* <span class="keyword">const</span> best_impact_value,</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  <span class="keywordtype">double</span>* <span class="keyword">const</span> var_impacts,</div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a5a43af9bcd9bfec04dbc66cc1a0c1ffd">DefaultPhaseParameters::VariableSelection</a> var_select,</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a859e753eeaea8a2e9a1af1a6aa5f786f">DefaultPhaseParameters::ValueSelection</a> value_select) {</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(best_impact_value != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(var_impacts != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keywordtype">double</span> max_impact = -<a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<double>::max</a>();</div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keywordtype">double</span> min_impact = <a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<double>::max</a>();</div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="keywordtype">double</span> sum_var_impact = 0.0;</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  int64_t min_impact_value = -1;</div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  int64_t max_impact_value = -1;</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> : InitAndGetValues(domain_iterators_[var_index])) {</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keyword">const</span> int64_t value_index = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> - original_min_[var_index];</div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <a class="code" href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a>(var_index, size_);</div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <a class="code" href="base_2logging_8h.html#ab62f5ed8f2d48e29802be0cbbcd1359a">DCHECK_LT</a>(value_index, impacts_[var_index].size());</div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> current_impact = impacts_[var_index][value_index];</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  sum_var_impact += current_impact;</div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="keywordflow">if</span> (current_impact > max_impact) {</div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  max_impact = current_impact;</div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  max_impact_value = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  }</div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  <span class="keywordflow">if</span> (current_impact < min_impact) {</div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  min_impact = current_impact;</div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  min_impact_value = <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>;</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  }</div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  }</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span> </div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  <span class="keywordflow">switch</span> (var_select) {</div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keywordflow">case</span> <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a5a43af9bcd9bfec04dbc66cc1a0c1ffdae89afeba83d94a0077202576edff7d20">DefaultPhaseParameters::CHOOSE_MAX_AVERAGE_IMPACT</a>: {</div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  *var_impacts = sum_var_impact / <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[var_index]->Size();</div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  }</div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="keywordflow">case</span> <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a5a43af9bcd9bfec04dbc66cc1a0c1ffdaa674cfb9265f697b4ada735c4401aac0">DefaultPhaseParameters::CHOOSE_MAX_VALUE_IMPACT</a>: {</div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  *var_impacts = max_impact;</div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="keywordflow">break</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="keywordflow">default</span>: {</div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  *var_impacts = sum_var_impact;</div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  }</div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  }</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keywordflow">switch</span> (value_select) {</div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keywordflow">case</span> <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a859e753eeaea8a2e9a1af1a6aa5f786faee0a24529a0371855709d8b20c5531f8">DefaultPhaseParameters::SELECT_MIN_IMPACT</a>: {</div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  *best_impact_value = min_impact_value;</div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  }</div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="keywordflow">case</span> <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a859e753eeaea8a2e9a1af1a6aa5f786fa2537cfa97cf345dda1b14e7da07b60d9">DefaultPhaseParameters::SELECT_MAX_IMPACT</a>: {</div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  *best_impact_value = max_impact_value;</div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  }</div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  }</div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  }</div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span> </div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  std::string DebugString()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="stringliteral">"ImpactRecorder"</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>  <span class="keyword">private</span>:</div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="comment">// A container for the variables needed in FirstRun that is reversibly</span></div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <span class="comment">// allocable.</span></div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  <span class="keyword">class </span>FirstRunVariableContainers : <span class="keyword">public</span> BaseObject {</div><div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  FirstRunVariableContainers(ImpactRecorder* impact_recorder, int64_t splits)</div><div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  : update_impact_callback_(</div><div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  [impact_recorder](int var_index, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  impact_recorder->InitImpact(var_index, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  }),</div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  removed_values_(),</div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  without_splits_(),</div><div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  with_splits_(splits) {}</div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  std::function<void(<span class="keywordtype">int</span>, int64_t)> update_impact_callback()<span class="keyword"> const </span>{</div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keywordflow">return</span> update_impact_callback_;</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>  <span class="keywordtype">void</span> PushBackRemovedValue(int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>) {</div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  removed_values_.push_back(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  }</div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordtype">bool</span> HasRemovedValues()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> !removed_values_.empty(); }</div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordtype">void</span> ClearRemovedValues() { removed_values_.clear(); }</div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordtype">size_t</span> NumRemovedValues()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> removed_values_.size(); }</div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keyword">const</span> std::vector<int64_t>& removed_values()<span class="keyword"> const </span>{</div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="keywordflow">return</span> removed_values_;</div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  }</div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  InitVarImpacts* without_split() { <span class="keywordflow">return</span> &without_splits_; }</div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  InitVarImpactsWithSplits* with_splits() { <span class="keywordflow">return</span> &with_splits_; }</div><div class="line"><a name="l00622"></a><span class="lineno"> 622</span> </div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  std::string DebugString()<span class="keyword"> const override </span>{</div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="keywordflow">return</span> <span class="stringliteral">"FirstRunVariableContainers"</span>;</div><div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  }</div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span> </div><div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <span class="keyword">const</span> std::function<void(<span class="keywordtype">int</span>, int64_t)> update_impact_callback_;</div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  std::vector<int64_t> removed_values_;</div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  InitVarImpacts without_splits_;</div><div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  InitVarImpactsWithSplits with_splits_;</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>  DomainWatcher* <span class="keyword">const</span> domain_watcher_;</div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  std::vector<IntVar*> <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>;</div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> size_;</div><div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  <span class="keywordtype">double</span> current_log_space_;</div><div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  <span class="comment">// impacts_[i][j] stores the average search space reduction when assigning</span></div><div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  <span class="comment">// original_min_[i] + j to variable i.</span></div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  std::vector<std::vector<double> > impacts_;</div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  std::vector<int64_t> original_min_;</div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  std::unique_ptr<IntVarIterator*[]> domain_iterators_;</div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  int64_t init_count_;</div><div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382">DefaultPhaseParameters::DisplayLevel</a> display_level_;</div><div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  <span class="keywordtype">int</span> current_var_;</div><div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  int64_t current_value_;</div><div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  FindVar find_var_;</div><div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  absl::flat_hash_map<const IntVar*, int> var_map_;</div><div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  <span class="keywordtype">bool</span> init_done_;</div><div class="line"><a name="l00650"></a><span class="lineno"> 650</span> </div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(ImpactRecorder);</div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span> };</div><div class="line"><a name="l00653"></a><span class="lineno"> 653</span> </div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="default__search_8cc.html#aba93685cfc7625455dbc4c61f87e78c8">ImpactRecorder::kLogCacheSize</a> = 1000;</div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#adb8d98fb250deb02563f7398be4e58f9">ImpactRecorder::kPerfectImpact</a> = 1.0;</div><div class="line"><a name="l00656"></a><span class="lineno"> 656</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#a89b1a79ac848480ee3ab0e701fa72e38">ImpactRecorder::kFailureImpact</a> = 1.0;</div><div class="line"><a name="l00657"></a><span class="lineno"> 657</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#ac6de7efc20e1cd7befb81b9afd77d777">ImpactRecorder::kInitFailureImpact</a> = 2.0;</div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span> <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">ImpactRecorder::kUninitializedVarIndex</a> = -1;</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="comment">// This structure stores 'var[index] (left?==:!=) value'.</span></div><div class="line"><a name="l00661"></a><span class="lineno"> 661</span> <span class="keyword">class </span>ChoiceInfo {</div><div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  ChoiceInfo() : value_(0), var_(nullptr), left_(false) {}</div><div class="line"><a name="l00664"></a><span class="lineno"> 664</span> </div><div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  ChoiceInfo(IntVar* <span class="keyword">const</span> <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>, <span class="keywordtype">bool</span> left)</div><div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  : value_(<a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>), var_(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>), left_(left) {}</div><div class="line"><a name="l00667"></a><span class="lineno"> 667</span> </div><div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  std::string DebugString()<span class="keyword"> const </span>{</div><div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <span class="keywordflow">return</span> absl::StrFormat(<span class="stringliteral">"%s %s %d"</span>, var_->name(), (left_ ? <span class="stringliteral">"=="</span> : <span class="stringliteral">"!="</span>),</div><div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  value_);</div><div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  }</div><div class="line"><a name="l00672"></a><span class="lineno"> 672</span> </div><div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  IntVar* <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> var_; }</div><div class="line"><a name="l00674"></a><span class="lineno"> 674</span> </div><div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  <span class="keywordtype">bool</span> left()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> left_; }</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>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> value_; }</div><div class="line"><a name="l00678"></a><span class="lineno"> 678</span> </div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keywordtype">void</span> set_left(<span class="keywordtype">bool</span> left) { left_ = left; }</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="keyword">private</span>:</div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  int64_t value_;</div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  IntVar* var_;</div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="keywordtype">bool</span> left_;</div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span> };</div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span> </div><div class="line"><a name="l00687"></a><span class="lineno"> 687</span> <span class="comment">// ---------- Heuristics ----------</span></div><div class="line"><a name="l00688"></a><span class="lineno"> 688</span> </div><div class="line"><a name="l00689"></a><span class="lineno"> 689</span> <span class="keyword">class </span>RunHeuristicsAsDives : <span class="keyword">public</span> Decision {</div><div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  RunHeuristicsAsDives(Solver* <span class="keyword">const</span> solver, <span class="keyword">const</span> std::vector<IntVar*>& vars,</div><div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382">DefaultPhaseParameters::DisplayLevel</a> level,</div><div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="keywordtype">bool</span> run_all_heuristics, <span class="keywordtype">int</span> random_seed,</div><div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="keywordtype">int</span> heuristic_period, <span class="keywordtype">int</span> heuristic_num_failures_limit)</div><div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  : heuristic_limit_(nullptr),</div><div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  display_level_(level),</div><div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  run_all_heuristics_(run_all_heuristics),</div><div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  random_(random_seed),</div><div class="line"><a name="l00699"></a><span class="lineno"> 699</span>  heuristic_period_(heuristic_period),</div><div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  heuristic_branch_count_(0),</div><div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  heuristic_runs_(0) {</div><div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  Init(solver, vars, heuristic_num_failures_limit);</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>  ~RunHeuristicsAsDives()<span class="keyword"> override </span>{ <a class="code" href="namespacegtl.html#a4ee3db0c4acaa0f277a0d7006f5ad1e6">gtl::STLDeleteElements</a>(&heuristics_); }</div><div class="line"><a name="l00706"></a><span class="lineno"> 706</span> </div><div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  <span class="keywordtype">void</span> Apply(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{</div><div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  <span class="keywordflow">if</span> (!RunAllHeuristics(solver)) {</div><div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  solver->Fail();</div><div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  }</div><div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  }</div><div class="line"><a name="l00712"></a><span class="lineno"> 712</span> </div><div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="keywordtype">void</span> Refute(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{}</div><div class="line"><a name="l00714"></a><span class="lineno"> 714</span> </div><div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keywordtype">bool</span> ShouldRun() {</div><div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keywordflow">if</span> (heuristic_period_ <= 0) {</div><div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  }</div><div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  ++heuristic_branch_count_;</div><div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="keywordflow">return</span> heuristic_branch_count_ % heuristic_period_ == 0;</div><div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  }</div><div class="line"><a name="l00722"></a><span class="lineno"> 722</span> </div><div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  <span class="keywordtype">bool</span> RunOneHeuristic(Solver* <span class="keyword">const</span> solver, <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div><div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  HeuristicWrapper* <span class="keyword">const</span> wrapper = heuristics_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>];</div><div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  heuristic_runs_++;</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>  <span class="keyword">const</span> <span class="keywordtype">bool</span> result =</div><div class="line"><a name="l00728"></a><span class="lineno"> 728</span>  solver->SolveAndCommit(wrapper->phase, heuristic_limit_);</div><div class="line"><a name="l00729"></a><span class="lineno"> 729</span>  <span class="keywordflow">if</span> (result && display_level_ != <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ac157bdf0b85a40d2619cbc8bc1ae5fe2">DefaultPhaseParameters::NONE</a>) {</div><div class="line"><a name="l00730"></a><span class="lineno"> 730</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">" --- solution found by heuristic "</span> << wrapper->name</div><div class="line"><a name="l00731"></a><span class="lineno"> 731</span>  << <span class="stringliteral">" --- "</span>;</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>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l00734"></a><span class="lineno"> 734</span>  }</div><div class="line"><a name="l00735"></a><span class="lineno"> 735</span> </div><div class="line"><a name="l00736"></a><span class="lineno"> 736</span>  <span class="keywordtype">bool</span> RunAllHeuristics(Solver* <span class="keyword">const</span> solver) {</div><div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <span class="keywordflow">if</span> (run_all_heuristics_) {</div><div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = 0; <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> < heuristics_.size(); ++<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>) {</div><div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> run = 0; run < heuristics_[<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>]->runs; ++run) {</div><div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="keywordflow">if</span> (RunOneHeuristic(solver, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)) {</div><div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  }</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>  }</div><div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <a class="code" href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a>(heuristics_.size(), 0);</div><div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = absl::Uniform<int>(random_, 0, heuristics_.size());</div><div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <span class="keywordflow">return</span> RunOneHeuristic(solver, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div><div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  }</div><div class="line"><a name="l00751"></a><span class="lineno"> 751</span>  }</div><div class="line"><a name="l00752"></a><span class="lineno"> 752</span> </div><div class="line"><a name="l00753"></a><span class="lineno"> 753</span>  <span class="keywordtype">int</span> Rand32(<span class="keywordtype">int</span> size) {</div><div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  <a class="code" href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a>(size, 0);</div><div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <span class="keywordflow">return</span> absl::Uniform<int>(random_, 0, size);</div><div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  }</div><div class="line"><a name="l00757"></a><span class="lineno"> 757</span> </div><div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="keywordtype">void</span> Init(Solver* <span class="keyword">const</span> solver, <span class="keyword">const</span> std::vector<IntVar*>& vars,</div><div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  <span class="keywordtype">int</span> heuristic_num_failures_limit) {</div><div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kRunOnce = 1;</div><div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kRunMore = 2;</div><div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> kRunALot = 3;</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>  heuristics_.push_back(<span class="keyword">new</span> HeuristicWrapper(</div><div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  solver, vars, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a51ebcb4577d6f214dc22b869c9774448">Solver::CHOOSE_MIN_SIZE_LOWEST_MIN</a>,</div><div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a26ee6f4132972f3880a16bf01faf5886">Solver::ASSIGN_MIN_VALUE</a>, <span class="stringliteral">"AssignMinValueToMinDomainSize"</span>, kRunOnce));</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>  heuristics_.push_back(<span class="keyword">new</span> HeuristicWrapper(</div><div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  solver, vars, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a67ae4822c2c057bc55386cab118bbd70">Solver::CHOOSE_MIN_SIZE_HIGHEST_MAX</a>,</div><div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a6cc67468f22769f3bdfe3032b760b8c0">Solver::ASSIGN_MAX_VALUE</a>, <span class="stringliteral">"AssignMaxValueToMinDomainSize"</span>, kRunOnce));</div><div class="line"><a name="l00771"></a><span class="lineno"> 771</span> </div><div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  heuristics_.push_back(</div><div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  <span class="keyword">new</span> HeuristicWrapper(solver, vars, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a51ebcb4577d6f214dc22b869c9774448">Solver::CHOOSE_MIN_SIZE_LOWEST_MIN</a>,</div><div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a18c9277012e856da1bf8fcdbe79b2173">Solver::ASSIGN_CENTER_VALUE</a>,</div><div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  <span class="stringliteral">"AssignCenterValueToMinDomainSize"</span>, kRunOnce));</div><div class="line"><a name="l00776"></a><span class="lineno"> 776</span> </div><div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  heuristics_.push_back(<span class="keyword">new</span> HeuristicWrapper(</div><div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  solver, vars, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a1a148a0aaaad7f56eea42df9876e7ae9">Solver::CHOOSE_FIRST_UNBOUND</a>, <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a56859813749c27c6c20f8cdfec9eb9c2">Solver::ASSIGN_RANDOM_VALUE</a>,</div><div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  <span class="stringliteral">"AssignRandomValueToFirstUnbound"</span>, kRunALot));</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>  heuristics_.push_back(<span class="keyword">new</span> HeuristicWrapper(</div><div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  solver, vars, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a0dd29a5b1114a3da001126046058304c">Solver::CHOOSE_RANDOM</a>, <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a26ee6f4132972f3880a16bf01faf5886">Solver::ASSIGN_MIN_VALUE</a>,</div><div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="stringliteral">"AssignMinValueToRandomVariable"</span>, kRunMore));</div><div class="line"><a name="l00784"></a><span class="lineno"> 784</span> </div><div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  heuristics_.push_back(<span class="keyword">new</span> HeuristicWrapper(</div><div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  solver, vars, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a0dd29a5b1114a3da001126046058304c">Solver::CHOOSE_RANDOM</a>, <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a6cc67468f22769f3bdfe3032b760b8c0">Solver::ASSIGN_MAX_VALUE</a>,</div><div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  <span class="stringliteral">"AssignMaxValueToRandomVariable"</span>, kRunMore));</div><div class="line"><a name="l00788"></a><span class="lineno"> 788</span> </div><div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  heuristics_.push_back(<span class="keyword">new</span> HeuristicWrapper(</div><div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  solver, vars, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a0dd29a5b1114a3da001126046058304c">Solver::CHOOSE_RANDOM</a>, <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a56859813749c27c6c20f8cdfec9eb9c2">Solver::ASSIGN_RANDOM_VALUE</a>,</div><div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  <span class="stringliteral">"AssignRandomValueToRandomVariable"</span>, kRunMore));</div><div class="line"><a name="l00792"></a><span class="lineno"> 792</span> </div><div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  heuristic_limit_ = solver->MakeFailuresLimit(heuristic_num_failures_limit);</div><div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  }</div><div class="line"><a name="l00795"></a><span class="lineno"> 795</span> </div><div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  <span class="keywordtype">int</span> heuristic_runs()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> heuristic_runs_; }</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>  <span class="keyword">private</span>:</div><div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  <span class="comment">// This class wraps one heuristic with extra information: name and</span></div><div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  <span class="comment">// number of runs.</span></div><div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <span class="keyword">struct </span>HeuristicWrapper {</div><div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  HeuristicWrapper(Solver* <span class="keyword">const</span> solver, <span class="keyword">const</span> std::vector<IntVar*>& vars,</div><div class="line"><a name="l00803"></a><span class="lineno"> 803</span>  <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601">Solver::IntVarStrategy</a> var_strategy,</div><div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84">Solver::IntValueStrategy</a> value_strategy,</div><div class="line"><a name="l00805"></a><span class="lineno"> 805</span>  <span class="keyword">const</span> std::string& heuristic_name, <span class="keywordtype">int</span> heuristic_runs)</div><div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  : <a class="code" href="default__search_8cc.html#ad1547dc5c5aeb23eaccef64028eaef25">phase</a>(solver->MakePhase(vars, var_strategy, value_strategy)),</div><div class="line"><a name="l00807"></a><span class="lineno"> 807</span>  <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>(heuristic_name),</div><div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  <a class="code" href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d">runs</a>(heuristic_runs) {}</div><div class="line"><a name="l00809"></a><span class="lineno"> 809</span> </div><div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  <span class="comment">// The decision builder we are going to use in this dive.</span></div><div class="line"><a name="l00811"></a><span class="lineno"><a class="line" href="default__search_8cc.html#ad1547dc5c5aeb23eaccef64028eaef25"> 811</a></span>  DecisionBuilder* <span class="keyword">const</span> <a class="code" href="default__search_8cc.html#ad1547dc5c5aeb23eaccef64028eaef25">phase</a>;</div><div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  <span class="comment">// A name for logging purposes.</span></div><div class="line"><a name="l00813"></a><span class="lineno"><a class="line" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267"> 813</a></span>  <span class="keyword">const</span> std::string <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>;</div><div class="line"><a name="l00814"></a><span class="lineno"> 814</span>  <span class="comment">// How many times we will run this particular heuristic in case the</span></div><div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="comment">// parameter run_all_heuristics is true. This is useful for random</span></div><div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  <span class="comment">// heuristics where it makes sense to run them more than once.</span></div><div class="line"><a name="l00817"></a><span class="lineno"><a class="line" href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d"> 817</a></span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d">runs</a>;</div><div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  };</div><div class="line"><a name="l00819"></a><span class="lineno"> 819</span> </div><div class="line"><a name="l00820"></a><span class="lineno"> 820</span>  std::vector<HeuristicWrapper*> heuristics_;</div><div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  SearchMonitor* heuristic_limit_;</div><div class="line"><a name="l00822"></a><span class="lineno"> 822</span>  <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382">DefaultPhaseParameters::DisplayLevel</a> display_level_;</div><div class="line"><a name="l00823"></a><span class="lineno"> 823</span>  <span class="keywordtype">bool</span> run_all_heuristics_;</div><div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  std::mt19937 random_;</div><div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> heuristic_period_;</div><div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  <span class="keywordtype">int</span> heuristic_branch_count_;</div><div class="line"><a name="l00827"></a><span class="lineno"> 827</span>  <span class="keywordtype">int</span> heuristic_runs_;</div><div class="line"><a name="l00828"></a><span class="lineno"> 828</span> };</div><div class="line"><a name="l00829"></a><span class="lineno"> 829</span> </div><div class="line"><a name="l00830"></a><span class="lineno"> 830</span> <span class="comment">// ---------- DefaultIntegerSearch ----------</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> <span class="comment">// Default phase decision builder.</span></div><div class="line"><a name="l00833"></a><span class="lineno"> 833</span> <span class="keyword">class </span>DefaultIntegerSearch : <span class="keyword">public</span> DecisionBuilder {</div><div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00835"></a><span class="lineno"><a class="line" href="default__search_8cc.html#a820ac1afde92c3c5a8f5fbd2a3664fbb"> 835</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#a820ac1afde92c3c5a8f5fbd2a3664fbb">kSmallSearchSpaceLimit</a>;</div><div class="line"><a name="l00836"></a><span class="lineno"> 836</span> </div><div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  DefaultIntegerSearch(Solver* <span class="keyword">const</span> solver, <span class="keyword">const</span> std::vector<IntVar*>& vars,</div><div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  <span class="keyword">const</span> DefaultPhaseParameters& <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>)</div><div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  : <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>(vars),</div><div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  parameters_(<a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>),</div><div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  domain_watcher_(vars, ImpactRecorder::<a class="code" href="default__search_8cc.html#aba93685cfc7625455dbc4c61f87e78c8">kLogCacheSize</a>),</div><div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  impact_recorder_(solver, &domain_watcher_, vars,</div><div class="line"><a name="l00843"></a><span class="lineno"> 843</span>  <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>.display_level),</div><div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  heuristics_(solver, <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>, parameters_.display_level,</div><div class="line"><a name="l00845"></a><span class="lineno"> 845</span>  parameters_.run_all_heuristics, parameters_.random_seed,</div><div class="line"><a name="l00846"></a><span class="lineno"> 846</span>  parameters_.heuristic_period,</div><div class="line"><a name="l00847"></a><span class="lineno"> 847</span>  parameters_.heuristic_num_failures_limit),</div><div class="line"><a name="l00848"></a><span class="lineno"> 848</span>  find_var_(),</div><div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  last_int_var_(nullptr),</div><div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  last_int_value_(0),</div><div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  last_operation_(FindVar::NONE),</div><div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  last_conflict_count_(0),</div><div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  init_done_(false) {}</div><div class="line"><a name="l00854"></a><span class="lineno"> 854</span> </div><div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  ~DefaultIntegerSearch()<span class="keyword"> override </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>  Decision* Next(Solver* <span class="keyword">const</span> solver)<span class="keyword"> override </span>{</div><div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  CheckInit(solver);</div><div class="line"><a name="l00859"></a><span class="lineno"> 859</span> </div><div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="keywordflow">if</span> (heuristics_.ShouldRun()) {</div><div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  <span class="keywordflow">return</span> &heuristics_;</div><div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  }</div><div class="line"><a name="l00863"></a><span class="lineno"> 863</span> </div><div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  Decision* <span class="keyword">const</span> decision = parameters_.decision_builder != <span class="keyword">nullptr</span></div><div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  ? parameters_.decision_builder->Next(solver)</div><div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  : ImpactNext(solver);</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="comment">// Returns early if the search tree is finished anyway.</span></div><div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  <span class="keywordflow">if</span> (decision == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  ClearLastDecision();</div><div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</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> </div><div class="line"><a name="l00874"></a><span class="lineno"> 874</span>  <span class="comment">// The main goal of last conflict is to branch on a decision</span></div><div class="line"><a name="l00875"></a><span class="lineno"> 875</span>  <span class="comment">// variable different from the one being evaluated. We need to</span></div><div class="line"><a name="l00876"></a><span class="lineno"> 876</span>  <span class="comment">// retrieve first the variable in the current decision.</span></div><div class="line"><a name="l00877"></a><span class="lineno"> 877</span>  decision->Accept(&find_var_);</div><div class="line"><a name="l00878"></a><span class="lineno"> 878</span>  IntVar* <span class="keyword">const</span> decision_var =</div><div class="line"><a name="l00879"></a><span class="lineno"> 879</span>  find_var_.operation() != FindVar::NONE ? find_var_.var() : <span class="keyword">nullptr</span>;</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>  <span class="comment">// We will hijack the search heuristics if</span></div><div class="line"><a name="l00882"></a><span class="lineno"> 882</span>  <span class="comment">// - we use last conflict</span></div><div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <span class="comment">// - we have stored the last decision from the search heuristics</span></div><div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  <span class="comment">// - the variable stored is different from the variable of the current</span></div><div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  <span class="comment">// decision</span></div><div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="comment">// - this variable is not bound already</span></div><div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  <span class="comment">// Furthermore, each case will also verify that the stored decision is</span></div><div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  <span class="comment">// compatible with the current domain variable.</span></div><div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  <span class="keywordflow">if</span> (parameters_.use_last_conflict && last_int_var_ != <span class="keyword">nullptr</span> &&</div><div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  !last_int_var_->Bound() &&</div><div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  (decision_var == <span class="keyword">nullptr</span> || decision_var != last_int_var_)) {</div><div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  <span class="keywordflow">switch</span> (last_operation_) {</div><div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="keywordflow">case</span> FindVar::ASSIGN: {</div><div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="keywordflow">if</span> (last_int_var_->Contains(last_int_value_)) {</div><div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  Decision* <span class="keyword">const</span> assign =</div><div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  solver->MakeAssignVariableValue(last_int_var_, last_int_value_);</div><div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  ClearLastDecision();</div><div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  last_conflict_count_++;</div><div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <span class="keywordflow">return</span> assign;</div><div class="line"><a name="l00900"></a><span class="lineno"> 900</span>  }</div><div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  }</div><div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  <span class="keywordflow">case</span> FindVar::SPLIT_LOW: {</div><div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  <span class="keywordflow">if</span> (last_int_var_->Max() > last_int_value_ &&</div><div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  last_int_var_->Min() <= last_int_value_) {</div><div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  Decision* <span class="keyword">const</span> split = solver->MakeVariableLessOrEqualValue(</div><div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  last_int_var_, last_int_value_);</div><div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  ClearLastDecision();</div><div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  last_conflict_count_++;</div><div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <span class="keywordflow">return</span> split;</div><div class="line"><a name="l00911"></a><span class="lineno"> 911</span>  }</div><div class="line"><a name="l00912"></a><span class="lineno"> 912</span>  <span class="keywordflow">break</span>;</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="keywordflow">case</span> FindVar::SPLIT_HIGH: {</div><div class="line"><a name="l00915"></a><span class="lineno"> 915</span>  <span class="keywordflow">if</span> (last_int_var_->Min() < last_int_value_ &&</div><div class="line"><a name="l00916"></a><span class="lineno"> 916</span>  last_int_var_->Max() >= last_int_value_) {</div><div class="line"><a name="l00917"></a><span class="lineno"> 917</span>  Decision* <span class="keyword">const</span> split = solver->MakeVariableGreaterOrEqualValue(</div><div class="line"><a name="l00918"></a><span class="lineno"> 918</span>  last_int_var_, last_int_value_);</div><div class="line"><a name="l00919"></a><span class="lineno"> 919</span>  ClearLastDecision();</div><div class="line"><a name="l00920"></a><span class="lineno"> 920</span>  last_conflict_count_++;</div><div class="line"><a name="l00921"></a><span class="lineno"> 921</span>  <span class="keywordflow">return</span> split;</div><div class="line"><a name="l00922"></a><span class="lineno"> 922</span>  }</div><div class="line"><a name="l00923"></a><span class="lineno"> 923</span>  <span class="keywordflow">break</span>;</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>  <span class="keywordflow">default</span>: {</div><div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  <span class="keywordflow">break</span>;</div><div class="line"><a name="l00927"></a><span class="lineno"> 927</span>  }</div><div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  }</div><div class="line"><a name="l00929"></a><span class="lineno"> 929</span>  }</div><div class="line"><a name="l00930"></a><span class="lineno"> 930</span> </div><div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  <span class="keywordflow">if</span> (parameters_.use_last_conflict) {</div><div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="comment">// Store the last decision to replay it upon failure.</span></div><div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  decision->Accept(&find_var_);</div><div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  <span class="keywordflow">if</span> (find_var_.operation() != FindVar::NONE) {</div><div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  last_int_var_ = find_var_.var();</div><div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  last_int_value_ = find_var_.value();</div><div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  last_operation_ = find_var_.operation();</div><div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  }</div><div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  }</div><div class="line"><a name="l00940"></a><span class="lineno"> 940</span> </div><div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  <span class="keywordflow">return</span> decision;</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> </div><div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="keywordtype">void</span> ClearLastDecision() {</div><div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  last_int_var_ = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  last_int_value_ = 0;</div><div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  last_operation_ = FindVar::NONE;</div><div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  }</div><div class="line"><a name="l00949"></a><span class="lineno"> 949</span> </div><div class="line"><a name="l00950"></a><span class="lineno"> 950</span>  <span class="keywordtype">void</span> AppendMonitors(Solver* <span class="keyword">const</span> solver,</div><div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  std::vector<SearchMonitor*>* <span class="keyword">const</span> extras)<span class="keyword"> override </span>{</div><div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(solver != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(extras != <span class="keyword">nullptr</span>);</div><div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  <span class="keywordflow">if</span> (parameters_.decision_builder == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00955"></a><span class="lineno"> 955</span>  extras->push_back(&impact_recorder_);</div><div class="line"><a name="l00956"></a><span class="lineno"> 956</span>  }</div><div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  }</div><div class="line"><a name="l00958"></a><span class="lineno"> 958</span> </div><div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <span class="keywordtype">void</span> Accept(ModelVisitor* <span class="keyword">const</span> visitor)<span class="keyword"> const override </span>{</div><div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  visitor->BeginVisitExtension(<a class="code" href="classoperations__research_1_1_model_visitor.html#ab2689eae50e311de930f43660cd27034">ModelVisitor::kVariableGroupExtension</a>);</div><div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  visitor->VisitIntegerVariableArrayArgument(<a class="code" href="classoperations__research_1_1_model_visitor.html#aa9175e7f7c9d2598d26293435ecd89ce">ModelVisitor::kVarsArgument</a>,</div><div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  vars_);</div><div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  visitor->EndVisitExtension(<a class="code" href="classoperations__research_1_1_model_visitor.html#ab2689eae50e311de930f43660cd27034">ModelVisitor::kVariableGroupExtension</a>);</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> </div><div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  std::string DebugString()<span class="keyword"> const override </span>{</div><div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  std::string out = <span class="stringliteral">"DefaultIntegerSearch("</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="keywordflow">if</span> (parameters_.decision_builder == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  out.append(<span class="stringliteral">"Impact Based Search, "</span>);</div><div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  out.append(parameters_.decision_builder->DebugString());</div><div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  out.append(<span class="stringliteral">", "</span>);</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>  out.append(<a class="code" href="namespaceoperations__research.html#a9be76edcbd5ccb982d92c8d90421a73c">JoinDebugStringPtr</a>(vars_, <span class="stringliteral">", "</span>));</div><div class="line"><a name="l00976"></a><span class="lineno"> 976</span>  out.append(<span class="stringliteral">")"</span>);</div><div class="line"><a name="l00977"></a><span class="lineno"> 977</span>  <span class="keywordflow">return</span> out;</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::string StatString()<span class="keyword"> const </span>{</div><div class="line"><a name="l00981"></a><span class="lineno"> 981</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> <a class="code" href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d">runs</a> = heuristics_.heuristic_runs();</div><div class="line"><a name="l00982"></a><span class="lineno"> 982</span>  std::string result;</div><div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  <span class="keywordflow">if</span> (<a class="code" href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d">runs</a> > 0) {</div><div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  <span class="keywordflow">if</span> (!result.empty()) {</div><div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  result.append(<span class="stringliteral">", "</span>);</div><div class="line"><a name="l00986"></a><span class="lineno"> 986</span>  }</div><div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  <span class="keywordflow">if</span> (<a class="code" href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d">runs</a> == 1) {</div><div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  result.append(<span class="stringliteral">"1 heuristic run"</span>);</div><div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  absl::StrAppendFormat(&result, <span class="stringliteral">"%d heuristic runs"</span>, <a class="code" href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d">runs</a>);</div><div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  }</div><div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  }</div><div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  <span class="keywordflow">if</span> (last_conflict_count_ > 0) {</div><div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  <span class="keywordflow">if</span> (!result.empty()) {</div><div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  result.append(<span class="stringliteral">", "</span>);</div><div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  }</div><div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  <span class="keywordflow">if</span> (last_conflict_count_ == 1) {</div><div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  result.append(<span class="stringliteral">"1 last conflict hint"</span>);</div><div class="line"><a name="l00999"></a><span class="lineno"> 999</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  absl::StrAppendFormat(&result, <span class="stringliteral">"%d last conflict hints"</span>,</div><div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>  last_conflict_count_);</div><div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>  }</div><div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>  }</div><div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>  }</div><div class="line"><a name="l01006"></a><span class="lineno"> 1006</span> </div><div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>  <span class="keywordtype">void</span> CheckInit(Solver* <span class="keyword">const</span> solver) {</div><div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>  <span class="keywordflow">if</span> (init_done_) {</div><div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>  <span class="keywordflow">return</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>  <span class="keywordflow">if</span> (parameters_.decision_builder == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  <span class="comment">// Decide if we are doing impacts, no if one variable is too big.</span></div><div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>.size(); ++i) {</div><div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  <span class="keywordflow">if</span> (vars_[i]->Max() - <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i]->Min() > 0xFFFFFF) {</div><div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <span class="keywordflow">if</span> (parameters_.display_level == <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ace3e26676763569084c86b8c3b67d601">DefaultPhaseParameters::VERBOSE</a>) {</div><div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Domains are too large, switching to simple "</span></div><div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  << <span class="stringliteral">"heuristics"</span>;</div><div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  }</div><div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  solver->SaveValue(</div><div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  reinterpret_cast<void**>(&parameters_.decision_builder));</div><div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  parameters_.decision_builder =</div><div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  solver->MakePhase(vars_, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a51ebcb4577d6f214dc22b869c9774448">Solver::CHOOSE_MIN_SIZE_LOWEST_MIN</a>,</div><div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a26ee6f4132972f3880a16bf01faf5886">Solver::ASSIGN_MIN_VALUE</a>);</div><div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  solver->SaveAndSetValue(&init_done_, <span class="keyword">true</span>);</div><div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  <span class="keywordflow">return</span>;</div><div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  }</div><div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  }</div><div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <span class="comment">// No if the search space is too small.</span></div><div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <span class="keywordflow">if</span> (domain_watcher_.LogSearchSpaceSize() < <a class="code" href="default__search_8cc.html#a820ac1afde92c3c5a8f5fbd2a3664fbb">kSmallSearchSpaceLimit</a>) {</div><div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  <span class="keywordflow">if</span> (parameters_.display_level == <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ace3e26676763569084c86b8c3b67d601">DefaultPhaseParameters::VERBOSE</a>) {</div><div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Search space is too small, switching to simple "</span></div><div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  << <span class="stringliteral">"heuristics"</span>;</div><div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  }</div><div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  solver->SaveValue(</div><div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  reinterpret_cast<void**>(&parameters_.decision_builder));</div><div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  parameters_.decision_builder = solver->MakePhase(</div><div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>  vars_, <a class="code" href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a1a148a0aaaad7f56eea42df9876e7ae9">Solver::CHOOSE_FIRST_UNBOUND</a>, <a class="code" href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a26ee6f4132972f3880a16bf01faf5886">Solver::ASSIGN_MIN_VALUE</a>);</div><div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  solver->SaveAndSetValue(&init_done_, <span class="keyword">true</span>);</div><div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>  <span class="keywordflow">return</span>;</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>  <span class="keywordflow">if</span> (parameters_.display_level != <a class="code" href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ac157bdf0b85a40d2619cbc8bc1ae5fe2">DefaultPhaseParameters::NONE</a>) {</div><div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << <span class="stringliteral">"Init impact based search phase on "</span> << <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>.size()</div><div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  << <span class="stringliteral">" variables, initialization splits = "</span></div><div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  << parameters_.initialization_splits</div><div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  << <span class="stringliteral">", heuristic_period = "</span> << parameters_.heuristic_period</div><div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  << <span class="stringliteral">", run_all_heuristics = "</span></div><div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  << parameters_.run_all_heuristics;</div><div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  }</div><div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  <span class="comment">// Init the impacts.</span></div><div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  impact_recorder_.FirstRun(parameters_.initialization_splits);</div><div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  }</div><div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  <span class="keywordflow">if</span> (parameters_.persistent_impact) {</div><div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  init_done_ = <span class="keyword">true</span>;</div><div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  solver->SaveAndSetValue(&init_done_, <span class="keyword">true</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>  }</div><div class="line"><a name="l01060"></a><span class="lineno"> 1060</span> </div><div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <span class="comment">// This method will do an exhaustive scan of all domains of all</span></div><div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  <span class="comment">// variables to select the variable with the maximal sum of impacts</span></div><div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  <span class="comment">// per value in its domain, and then select the value with the</span></div><div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  <span class="comment">// minimal impact.</span></div><div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  Decision* ImpactNext(Solver* <span class="keyword">const</span> solver) {</div><div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  IntVar* <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <span class="keyword">nullptr</span>;</div><div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  int64_t <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = 0;</div><div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  <span class="keywordtype">double</span> best_var_impact = -<a class="code" href="alldiff__cst_8cc.html#a26e6db9bcc64b584051ecc28171ed11f">std::numeric_limits<double>::max</a>();</div><div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>.size(); ++i) {</div><div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  <span class="keywordflow">if</span> (!vars_[i]->Bound()) {</div><div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  int64_t current_value = 0;</div><div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  <span class="keywordtype">double</span> current_var_impact = 0.0;</div><div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  impact_recorder_.ScanVarImpacts(i, &current_value, &current_var_impact,</div><div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  parameters_.var_selection_schema,</div><div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  parameters_.value_selection_schema);</div><div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <span class="keywordflow">if</span> (current_var_impact > best_var_impact) {</div><div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>[i];</div><div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a> = current_value;</div><div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  best_var_impact = current_var_impact;</div><div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  }</div><div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  }</div><div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>  }</div><div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  <span class="keywordflow">if</span> (<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> == <span class="keyword">nullptr</span>) {</div><div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div><div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>  <span class="keywordflow">return</span> solver->MakeAssignVariableValue(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="demon__profiler_8cc.html#ac072af30c4ffbc834bb4c681f6ecb514">value</a>);</div><div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>  }</div><div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>  }</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>  <span class="comment">// ----- data members -----</span></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>  std::vector<IntVar*> <a class="code" href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a>;</div><div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  DefaultPhaseParameters parameters_;</div><div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  DomainWatcher domain_watcher_;</div><div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>  ImpactRecorder impact_recorder_;</div><div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  RunHeuristicsAsDives heuristics_;</div><div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>  FindVar find_var_;</div><div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>  IntVar* last_int_var_;</div><div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>  int64_t last_int_value_;</div><div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>  FindVar::Operation last_operation_;</div><div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>  <span class="keywordtype">int</span> last_conflict_count_;</div><div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>  <span class="keywordtype">bool</span> init_done_;</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="keyword">const</span> <span class="keywordtype">double</span> <a class="code" href="default__search_8cc.html#a820ac1afde92c3c5a8f5fbd2a3664fbb">DefaultIntegerSearch::kSmallSearchSpaceLimit</a> = 10.0;</div><div class="line"><a name="l01106"></a><span class="lineno"> 1106</span> } <span class="comment">// namespace</span></div><div class="line"><a name="l01107"></a><span class="lineno"> 1107</span> </div><div class="line"><a name="l01108"></a><span class="lineno"> 1108</span> <span class="comment">// ---------- API ----------</span></div><div class="line"><a name="l01109"></a><span class="lineno"> 1109</span> </div><div class="line"><a name="l01110"></a><span class="lineno"><a class="line" href="namespaceoperations__research.html#a733a158778811d96006bf3a550933c19"> 1110</a></span> std::string <a class="code" href="namespaceoperations__research.html#a733a158778811d96006bf3a550933c19">DefaultPhaseStatString</a>(<a class="code" href="classoperations__research_1_1_decision_builder.html">DecisionBuilder</a>* db) {</div><div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  DefaultIntegerSearch* <span class="keyword">const</span> dis = dynamic_cast<DefaultIntegerSearch*>(db);</div><div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  <span class="keywordflow">return</span> dis != <span class="keyword">nullptr</span> ? dis->StatString() : <span class="stringliteral">""</span>;</div><div class="line"><a name="l01113"></a><span class="lineno"> 1113</span> }</div><div class="line"><a name="l01114"></a><span class="lineno"> 1114</span> </div><div class="line"><a name="l01115"></a><span class="lineno"><a class="line" href="classoperations__research_1_1_solver.html#ae83f4bd46d24db9dd2177e84cae8da6d"> 1115</a></span> <a class="code" href="classoperations__research_1_1_decision_builder.html">DecisionBuilder</a>* <a class="code" href="classoperations__research_1_1_solver.html#ae83f4bd46d24db9dd2177e84cae8da6d">Solver::MakeDefaultPhase</a>(<span class="keyword">const</span> std::vector<IntVar*>& vars) {</div><div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  <a class="code" href="structoperations__research_1_1_default_phase_parameters.html">DefaultPhaseParameters</a> <a class="code" href="classoperations__research_1_1_solver.html#a2a0b93a70f0d588f157ade7909c42eff">parameters</a>;</div><div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1_solver.html#ae83f4bd46d24db9dd2177e84cae8da6d">MakeDefaultPhase</a>(vars, <a class="code" href="classoperations__research_1_1_solver.html#a2a0b93a70f0d588f157ade7909c42eff">parameters</a>);</div><div class="line"><a name="l01118"></a><span class="lineno"> 1118</span> }</div><div class="line"><a name="l01119"></a><span class="lineno"> 1119</span> </div><div class="line"><a name="l01120"></a><span class="lineno"><a class="line" href="classoperations__research_1_1_solver.html#aff916492777aed8cc81ce92767cd461a"> 1120</a></span> <a class="code" href="classoperations__research_1_1_decision_builder.html">DecisionBuilder</a>* <a class="code" href="classoperations__research_1_1_solver.html#ae83f4bd46d24db9dd2177e84cae8da6d">Solver::MakeDefaultPhase</a>(</div><div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>  <span class="keyword">const</span> std::vector<IntVar*>& vars,</div><div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1_default_phase_parameters.html">DefaultPhaseParameters</a>& <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>) {</div><div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  <span class="keywordflow">return</span> <a class="code" href="classoperations__research_1_1_solver.html#ab741cb25dd32d1cbe02fbfb36337d9bb">RevAlloc</a>(<span class="keyword">new</span> DefaultIntegerSearch(<span class="keyword">this</span>, vars, <a class="code" href="classoperations__research_1_1_solver.html#a2a0b93a70f0d588f157ade7909c42eff">parameters</a>));</div><div class="line"><a name="l01124"></a><span class="lineno"> 1124</span> }</div><div class="line"><a name="l01125"></a><span class="lineno"> 1125</span> } <span class="comment">// namespace operations_research</span></div><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="default__search_8cc_html_ad1547dc5c5aeb23eaccef64028eaef25"><div class="ttname"><a href="default__search_8cc.html#ad1547dc5c5aeb23eaccef64028eaef25">phase</a></div><div class="ttdeci">DecisionBuilder *const phase</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00811">default_search.cc:811</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_a45c5a2dd0d47110ef5b00408854d8d84a26ee6f4132972f3880a16bf01faf5886"><div class="ttname"><a href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a26ee6f4132972f3880a16bf01faf5886">operations_research::Solver::ASSIGN_MIN_VALUE</a></div><div class="ttdoc">Selects the min value of the selected variable.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00353">constraint_solver.h:353</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_a45c5a2dd0d47110ef5b00408854d8d84a18c9277012e856da1bf8fcdbe79b2173"><div class="ttname"><a href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a18c9277012e856da1bf8fcdbe79b2173">operations_research::Solver::ASSIGN_CENTER_VALUE</a></div><div class="ttdoc">Selects the first possible value which is the closest to the center of the domain of the selected var...</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00364">constraint_solver.h:364</a></div></div>
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<div class="ttc" id="namespaceoperations__research_html_a733a158778811d96006bf3a550933c19"><div class="ttname"><a href="namespaceoperations__research.html#a733a158778811d96006bf3a550933c19">operations_research::DefaultPhaseStatString</a></div><div class="ttdeci">std::string DefaultPhaseStatString(DecisionBuilder *db)</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l01110">default_search.cc:1110</a></div></div>
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<div class="ttc" id="expressions_8cc_html_afeb77fb46384728a22a40acd40b28b0c"><div class="ttname"><a href="expressions_8cc.html#afeb77fb46384728a22a40acd40b28b0c">iterator_</a></div><div class="ttdeci">IntVarIterator *const iterator_</div><div class="ttdef"><b>Definition:</b> <a href="expressions_8cc_source.html#l02189">expressions.cc:2189</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="namespaceoperations__research_html_a6daa2481a6bbd7b307647006a8752630"><div class="ttname"><a href="namespaceoperations__research.html#a6daa2481a6bbd7b307647006a8752630">operations_research::CpRandomSeed</a></div><div class="ttdeci">int64_t CpRandomSeed()</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00158">constraint_solver.h:158</a></div></div>
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<div class="ttc" id="constraint__solver_8h_html"><div class="ttname"><a href="constraint__solver_8h.html">constraint_solver.h</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a5a43af9bcd9bfec04dbc66cc1a0c1ffd"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a5a43af9bcd9bfec04dbc66cc1a0c1ffd">operations_research::DefaultPhaseParameters::VariableSelection</a></div><div class="ttdeci">VariableSelection</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00169">constraint_solver.h:169</a></div></div>
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<div class="ttc" id="default__search_8cc_html_ac673bc430bdc3fdaa09f7becf98ef267"><div class="ttname"><a href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a></div><div class="ttdeci">const std::string name</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00813">default_search.cc:813</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a36703c0bee7e0f1e68f64e0bb9307382ac157bdf0b85a40d2619cbc8bc1ae5fe2"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ac157bdf0b85a40d2619cbc8bc1ae5fe2">operations_research::DefaultPhaseParameters::NONE</a></div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00180">constraint_solver.h:180</a></div></div>
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<div class="ttc" id="default__search_8cc_html_ad71cbb5360015a4f49c6abdb18300912"><div class="ttname"><a href="default__search_8cc.html#ad71cbb5360015a4f49c6abdb18300912">value_min_</a></div><div class="ttdeci">int64_t value_min_</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00272">default_search.cc:272</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a859e753eeaea8a2e9a1af1a6aa5f786f"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a859e753eeaea8a2e9a1af1a6aa5f786f">operations_research::DefaultPhaseParameters::ValueSelection</a></div><div class="ttdeci">ValueSelection</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00175">constraint_solver.h:175</a></div></div>
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<div class="ttc" id="gurobi__interface_8cc_html_a6627a3800ac768bb5528ef54c9cace36"><div class="ttname"><a href="gurobi__interface_8cc.html#a6627a3800ac768bb5528ef54c9cace36">callback</a></div><div class="ttdeci">MPCallback * callback</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__interface_8cc_source.html#l00514">gurobi_interface.cc:514</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a5a43af9bcd9bfec04dbc66cc1a0c1ffdae89afeba83d94a0077202576edff7d20"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a5a43af9bcd9bfec04dbc66cc1a0c1ffdae89afeba83d94a0077202576edff7d20">operations_research::DefaultPhaseParameters::CHOOSE_MAX_AVERAGE_IMPACT</a></div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00171">constraint_solver.h:171</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a36703c0bee7e0f1e68f64e0bb9307382"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382">operations_research::DefaultPhaseParameters::DisplayLevel</a></div><div class="ttdeci">DisplayLevel</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00180">constraint_solver.h:180</a></div></div>
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<div class="ttc" id="base_2logging_8h_html_accad43a85d781d53381cd53a9894b6ae"><div class="ttname"><a href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a></div><div class="ttdeci">#define LOG(severity)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00416">base/logging.h:416</a></div></div>
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<div class="ttc" id="constraint__solveri_8h_html"><div class="ttname"><a href="constraint__solveri_8h.html">constraint_solveri.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_ab7ab23bc58ea40dc03a5418ddbce7601a0dd29a5b1114a3da001126046058304c"><div class="ttname"><a href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a0dd29a5b1114a3da001126046058304c">operations_research::Solver::CHOOSE_RANDOM</a></div><div class="ttdoc">Randomly select one of the remaining unbound variables.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00277">constraint_solver.h:277</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a5a43af9bcd9bfec04dbc66cc1a0c1ffdaa674cfb9265f697b4ada735c4401aac0"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a5a43af9bcd9bfec04dbc66cc1a0c1ffdaa674cfb9265f697b4ada735c4401aac0">operations_research::DefaultPhaseParameters::CHOOSE_MAX_VALUE_IMPACT</a></div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00172">constraint_solver.h:172</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="default__search_8cc_html_aba93685cfc7625455dbc4c61f87e78c8"><div class="ttname"><a href="default__search_8cc.html#aba93685cfc7625455dbc4c61f87e78c8">kLogCacheSize</a></div><div class="ttdeci">static const int kLogCacheSize</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00362">default_search.cc:362</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a859e753eeaea8a2e9a1af1a6aa5f786faee0a24529a0371855709d8b20c5531f8"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a859e753eeaea8a2e9a1af1a6aa5f786faee0a24529a0371855709d8b20c5531f8">operations_research::DefaultPhaseParameters::SELECT_MIN_IMPACT</a></div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00176">constraint_solver.h:176</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_decision_builder_html"><div class="ttname"><a href="classoperations__research_1_1_decision_builder.html">operations_research::DecisionBuilder</a></div><div class="ttdoc">A DecisionBuilder is responsible for creating the search tree.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l03270">constraint_solver.h:3270</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_ab7ab23bc58ea40dc03a5418ddbce7601a51ebcb4577d6f214dc22b869c9774448"><div class="ttname"><a href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a51ebcb4577d6f214dc22b869c9774448">operations_research::Solver::CHOOSE_MIN_SIZE_LOWEST_MIN</a></div><div class="ttdoc">Among unbound variables, select the variable with the smallest size, i.e., the smallest number of pos...</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00285">constraint_solver.h:285</a></div></div>
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<div class="ttc" id="default__search_8cc_html_adb8d98fb250deb02563f7398be4e58f9"><div class="ttname"><a href="default__search_8cc.html#adb8d98fb250deb02563f7398be4e58f9">kPerfectImpact</a></div><div class="ttdeci">static const double kPerfectImpact</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00363">default_search.cc:363</a></div></div>
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<div class="ttc" id="integral__types_8h_html"><div class="ttname"><a href="integral__types_8h.html">integral_types.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_a2a0b93a70f0d588f157ade7909c42eff"><div class="ttname"><a href="classoperations__research_1_1_solver.html#a2a0b93a70f0d588f157ade7909c42eff">operations_research::Solver::parameters</a></div><div class="ttdeci">ConstraintSolverParameters parameters() const</div><div class="ttdoc">Stored Parameters.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00761">constraint_solver.h:761</a></div></div>
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<div class="ttc" id="macros_8h_html"><div class="ttname"><a href="macros_8h.html">macros.h</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="default__search_8cc_html_a89b1a79ac848480ee3ab0e701fa72e38"><div class="ttname"><a href="default__search_8cc.html#a89b1a79ac848480ee3ab0e701fa72e38">kFailureImpact</a></div><div class="ttdeci">static const double kFailureImpact</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00364">default_search.cc:364</a></div></div>
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<div class="ttc" id="default__search_8cc_html_a29f7ae4ecca887a7b2778dfdce83700d"><div class="ttname"><a href="default__search_8cc.html#a29f7ae4ecca887a7b2778dfdce83700d">runs</a></div><div class="ttdeci">const int runs</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00817">default_search.cc:817</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_ab7ab23bc58ea40dc03a5418ddbce7601a67ae4822c2c057bc55386cab118bbd70"><div class="ttname"><a href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a67ae4822c2c057bc55386cab118bbd70">operations_research::Solver::CHOOSE_MIN_SIZE_HIGHEST_MAX</a></div><div class="ttdoc">Among unbound variables, select the variable with the smallest size, i.e., the smallest number of pos...</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00309">constraint_solver.h:309</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_model_visitor_html_ab2689eae50e311de930f43660cd27034"><div class="ttname"><a href="classoperations__research_1_1_model_visitor.html#ab2689eae50e311de930f43660cd27034">operations_research::ModelVisitor::kVariableGroupExtension</a></div><div class="ttdeci">static const char kVariableGroupExtension[]</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l03432">constraint_solver.h:3432</a></div></div>
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<div class="ttc" id="default__search_8cc_html_a940303dc6f65110527ad84ac3c1d7232"><div class="ttname"><a href="default__search_8cc.html#a940303dc6f65110527ad84ac3c1d7232">value_max_</a></div><div class="ttdeci">int64_t value_max_</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00273">default_search.cc:273</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_ae83f4bd46d24db9dd2177e84cae8da6d"><div class="ttname"><a href="classoperations__research_1_1_solver.html#ae83f4bd46d24db9dd2177e84cae8da6d">operations_research::Solver::MakeDefaultPhase</a></div><div class="ttdeci">DecisionBuilder * MakeDefaultPhase(const std::vector< IntVar * > &vars)</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l01115">default_search.cc:1115</a></div></div>
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<div class="ttc" id="namespacegtl_html_aae28e97bd1fa93cb0032642550da7455"><div class="ttname"><a href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a></div><div class="ttdeci">bool ContainsKey(const Collection &collection, const Key &key)</div><div class="ttdef"><b>Definition:</b> <a href="map__util_8h_source.html#l00200">map_util.h:200</a></div></div>
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<div class="ttc" id="namespacegtl_html_a4ee3db0c4acaa0f277a0d7006f5ad1e6"><div class="ttname"><a href="namespacegtl.html#a4ee3db0c4acaa0f277a0d7006f5ad1e6">gtl::STLDeleteElements</a></div><div class="ttdeci">void STLDeleteElements(T *container)</div><div class="ttdef"><b>Definition:</b> <a href="stl__util_8h_source.html#l00372">stl_util.h:372</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a859e753eeaea8a2e9a1af1a6aa5f786fa2537cfa97cf345dda1b14e7da07b60d9"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a859e753eeaea8a2e9a1af1a6aa5f786fa2537cfa97cf345dda1b14e7da07b60d9">operations_research::DefaultPhaseParameters::SELECT_MAX_IMPACT</a></div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00177">constraint_solver.h:177</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_a45c5a2dd0d47110ef5b00408854d8d84a6cc67468f22769f3bdfe3032b760b8c0"><div class="ttname"><a href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a6cc67468f22769f3bdfe3032b760b8c0">operations_research::Solver::ASSIGN_MAX_VALUE</a></div><div class="ttdoc">Selects the max value of the selected variable.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00356">constraint_solver.h:356</a></div></div>
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<div class="ttc" id="pack_8cc_html_a750b5d744c39a06bfb13e6eb010e35d0"><div class="ttname"><a href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a></div><div class="ttdeci">int index</div><div class="ttdef"><b>Definition:</b> <a href="pack_8cc_source.html#l00509">pack.cc:509</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_a45c5a2dd0d47110ef5b00408854d8d84"><div class="ttname"><a href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84">operations_research::Solver::IntValueStrategy</a></div><div class="ttdeci">IntValueStrategy</div><div class="ttdoc">This enum describes the strategy used to select the next variable value to set.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00345">constraint_solver.h:345</a></div></div>
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<div class="ttc" id="default__search_8cc_html_acd458c8d08db2d8b1bd2dce9a4307208"><div class="ttname"><a href="default__search_8cc.html#acd458c8d08db2d8b1bd2dce9a4307208">ABSL_FLAG</a></div><div class="ttdeci">ABSL_FLAG(int, cp_impact_divider, 10, "Divider for continuous update.")</div></div>
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<div class="ttc" id="classoperations__research_1_1_model_visitor_html_aa9175e7f7c9d2598d26293435ecd89ce"><div class="ttname"><a href="classoperations__research_1_1_model_visitor.html#aa9175e7f7c9d2598d26293435ecd89ce">operations_research::ModelVisitor::kVarsArgument</a></div><div class="ttdeci">static const char kVarsArgument[]</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l03496">constraint_solver.h:3496</a></div></div>
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<div class="ttc" id="alldiff__cst_8cc_html_a151248525a9e07eb3e6e60ea1c4995eb"><div class="ttname"><a href="alldiff__cst_8cc.html#a151248525a9e07eb3e6e60ea1c4995eb">vars_</a></div><div class="ttdeci">const std::vector< IntVar * > vars_</div><div class="ttdef"><b>Definition:</b> <a href="alldiff__cst_8cc_source.html#l00044">alldiff_cst.cc:44</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_ab7ab23bc58ea40dc03a5418ddbce7601"><div class="ttname"><a href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601">operations_research::Solver::IntVarStrategy</a></div><div class="ttdeci">IntVarStrategy</div><div class="ttdoc">This enum describes the strategy used to select the next branching variable at each node during the s...</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00264">constraint_solver.h:264</a></div></div>
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<div class="ttc" id="cached__log_8h_html"><div class="ttname"><a href="cached__log_8h.html">cached_log.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_ab741cb25dd32d1cbe02fbfb36337d9bb"><div class="ttname"><a href="classoperations__research_1_1_solver.html#ab741cb25dd32d1cbe02fbfb36337d9bb">operations_research::Solver::RevAlloc</a></div><div class="ttdeci">T * RevAlloc(T *object)</div><div class="ttdoc">Registers the given object as being reversible.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00789">constraint_solver.h:789</a></div></div>
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<div class="ttc" id="base_2logging_8h_html"><div class="ttname"><a href="base_2logging_8h.html">logging.h</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_ab7ab23bc58ea40dc03a5418ddbce7601a1a148a0aaaad7f56eea42df9876e7ae9"><div class="ttname"><a href="classoperations__research_1_1_solver.html#ab7ab23bc58ea40dc03a5418ddbce7601a1a148a0aaaad7f56eea42df9876e7ae9">operations_research::Solver::CHOOSE_FIRST_UNBOUND</a></div><div class="ttdoc">Select the first unbound variable.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00274">constraint_solver.h:274</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a36703c0bee7e0f1e68f64e0bb9307382ace3e26676763569084c86b8c3b67d601"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a36703c0bee7e0f1e68f64e0bb9307382ace3e26676763569084c86b8c3b67d601">operations_research::DefaultPhaseParameters::VERBOSE</a></div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00180">constraint_solver.h:180</a></div></div>
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<div class="ttc" id="default__search_8cc_html_ac6de7efc20e1cd7befb81b9afd77d777"><div class="ttname"><a href="default__search_8cc.html#ac6de7efc20e1cd7befb81b9afd77d777">kInitFailureImpact</a></div><div class="ttdeci">static const double kInitFailureImpact</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00365">default_search.cc:365</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="commandlineflags_8h_html"><div class="ttname"><a href="commandlineflags_8h.html">commandlineflags.h</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html_a0d757e1829bae7762734bce78136a139"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html#a0d757e1829bae7762734bce78136a139">operations_research::DefaultPhaseParameters::DefaultPhaseParameters</a></div><div class="ttdeci">DefaultPhaseParameters()</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00047">default_search.cc:47</a></div></div>
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<div class="ttc" id="namespaceoperations__research_html_a9be76edcbd5ccb982d92c8d90421a73c"><div class="ttname"><a href="namespaceoperations__research.html#a9be76edcbd5ccb982d92c8d90421a73c">operations_research::JoinDebugStringPtr</a></div><div class="ttdeci">std::string JoinDebugStringPtr(const std::vector< T > &v, const std::string &separator)</div><div class="ttdef"><b>Definition:</b> <a href="string__array_8h_source.html#l00045">string_array.h:45</a></div></div>
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<div class="ttc" id="default__search_8cc_html_a894bdc68b09577c1504d2439c29c0890"><div class="ttname"><a href="default__search_8cc.html#a894bdc68b09577c1504d2439c29c0890">kUninitializedVarIndex</a></div><div class="ttdeci">static const int kUninitializedVarIndex</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00366">default_search.cc:366</a></div></div>
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<div class="ttc" id="cp__model__fz__solver_8cc_html_a10a1eab179b472c030bdc2a2efef7219"><div class="ttname"><a href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a></div><div class="ttdeci">SatParameters parameters</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__fz__solver_8cc_source.html#l00116">cp_model_fz_solver.cc:116</a></div></div>
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<div class="ttc" id="classoperations__research_1_1_solver_html_a45c5a2dd0d47110ef5b00408854d8d84a56859813749c27c6c20f8cdfec9eb9c2"><div class="ttname"><a href="classoperations__research_1_1_solver.html#a45c5a2dd0d47110ef5b00408854d8d84a56859813749c27c6c20f8cdfec9eb9c2">operations_research::Solver::ASSIGN_RANDOM_VALUE</a></div><div class="ttdoc">Selects randomly one of the possible values of the selected variable.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00359">constraint_solver.h:359</a></div></div>
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<div class="ttc" id="string__array_8h_html"><div class="ttname"><a href="string__array_8h.html">string_array.h</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="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="base_2logging_8h_html_ab25e01a2942b821d66371fc68d53f2eb"><div class="ttname"><a href="base_2logging_8h.html#ab25e01a2942b821d66371fc68d53f2eb">CHECK_NE</a></div><div class="ttdeci">#define CHECK_NE(val1, val2)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00699">base/logging.h:699</a></div></div>
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<div class="ttc" id="default__search_8cc_html_a820ac1afde92c3c5a8f5fbd2a3664fbb"><div class="ttname"><a href="default__search_8cc.html#a820ac1afde92c3c5a8f5fbd2a3664fbb">kSmallSearchSpaceLimit</a></div><div class="ttdeci">static const double kSmallSearchSpaceLimit</div><div class="ttdef"><b>Definition:</b> <a href="default__search_8cc_source.html#l00835">default_search.cc:835</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="macros_8h_html_af8df3547bfde53a5acb93e2607b0034a"><div class="ttname"><a href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a></div><div class="ttdeci">#define DISALLOW_COPY_AND_ASSIGN(TypeName)</div><div class="ttdef"><b>Definition:</b> <a href="macros_8h_source.html#l00029">macros.h:29</a></div></div>
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<div class="ttc" id="structoperations__research_1_1_default_phase_parameters_html"><div class="ttname"><a href="structoperations__research_1_1_default_phase_parameters.html">operations_research::DefaultPhaseParameters</a></div><div class="ttdoc">This struct holds all parameters for the default search.</div><div class="ttdef"><b>Definition:</b> <a href="constraint__solver_8h_source.html#l00167">constraint_solver.h:167</a></div></div>
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<div class="ttc" id="log__severity_8h_html_ab4a2cbab234914b320b7fae11b6e8cb9"><div class="ttname"><a href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a></div><div class="ttdeci">const int INFO</div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00031">log_severity.h:31</a></div></div>
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