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649 lines
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<a href="cp__model__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 2010-2018 Google LLC</span></div>
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<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>
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<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>
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<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>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
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<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>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<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>
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<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>
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<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>
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<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>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "<a class="code" href="cp__model__search_8h.html">ortools/sat/cp_model_search.h</a>"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include <random></span></div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include "absl/container/flat_hash_map.h"</span></div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include "absl/strings/str_format.h"</span></div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include "<a class="code" href="cp__model__utils_8h.html">ortools/sat/cp_model_utils.h</a>"</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="sat_2util_8h.html">ortools/sat/util.h</a>"</span></div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">namespace </span>sat {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  </div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// The function responsible for implementing the chosen search strategy.</span></div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// TODO(user): expose and unit-test, it seems easy to get the order wrong, and</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// that would not change the correctness.</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_strategy.html"> 30</a></span> <span class="keyword">struct </span><a class="code" href="structoperations__research_1_1sat_1_1_strategy.html">Strategy</a> {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_strategy.html#a3af5431410dfaccc5ec8fdfb8f1d8e3e"> 31</a></span>  std::vector<IntegerVariable> <a class="code" href="structoperations__research_1_1sat_1_1_strategy.html#a3af5431410dfaccc5ec8fdfb8f1d8e3e">variables</a>;</div>
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<div class="line"><a name="l00032"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_strategy.html#a1a44912d5eeec93b48624d8c0ef80764"> 32</a></span>  DecisionStrategyProto::VariableSelectionStrategy <a class="code" href="structoperations__research_1_1sat_1_1_strategy.html#a1a44912d5eeec93b48624d8c0ef80764">var_strategy</a>;</div>
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<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_strategy.html#a3fb4ec4afb28873c4155e5a96f836d0f"> 33</a></span>  DecisionStrategyProto::DomainReductionStrategy <a class="code" href="structoperations__research_1_1sat_1_1_strategy.html#a3fb4ec4afb28873c4155e5a96f836d0f">domain_strategy</a>;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> };</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// Stores one variable and its strategy value.</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_var_value.html"> 37</a></span> <span class="keyword">struct </span><a class="code" href="structoperations__research_1_1sat_1_1_var_value.html">VarValue</a> {</div>
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<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_var_value.html#ab6516f556b715738034b30d290c40214"> 38</a></span>  IntegerVariable <a class="code" href="structoperations__research_1_1sat_1_1_var_value.html#ab6516f556b715738034b30d290c40214">var</a>;</div>
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<div class="line"><a name="l00039"></a><span class="lineno"><a class="line" href="structoperations__research_1_1sat_1_1_var_value.html#a6b21ba2a964fe375e9ddbff5d8cabca8"> 39</a></span>  IntegerValue <a class="code" href="structoperations__research_1_1sat_1_1_var_value.html#a6b21ba2a964fe375e9ddbff5d8cabca8">value</a>;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> };</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
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<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#a8eaaab6887866402ed7380fb2e6344cb"> 42</a></span> <span class="keyword">const</span> std::function<<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a>()> <a class="code" href="namespaceoperations__research_1_1sat.html#a8eaaab6887866402ed7380fb2e6344cb">ConstructSearchStrategyInternal</a>(</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">const</span> absl::flat_hash_map<<span class="keywordtype">int</span>, std::pair<int64, int64>>&</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  var_to_coeff_offset_pair,</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">const</span> std::vector<Strategy>& strategies, <a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classoperations__research_1_1sat_1_1_integer_encoder.html">IntegerEncoder</a>* <span class="keyword">const</span> integer_encoder = <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_integer_encoder.html">IntegerEncoder</a>>();</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>* <span class="keyword">const</span> integer_trail = <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>>();</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  </div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// Note that we copy strategies to keep the return function validity</span></div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// independently of the life of the passed vector.</span></div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> [integer_encoder, integer_trail, strategies, var_to_coeff_offset_pair,</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>]() {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keyword">const</span> SatParameters* <span class="keyword">const</span> <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a> = <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<SatParameters>();</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="structoperations__research_1_1sat_1_1_strategy.html">Strategy</a>& strategy : strategies) {</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  IntegerVariable candidate = <a class="code" href="namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06">kNoIntegerVariable</a>;</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  IntegerValue candidate_value = <a class="code" href="namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8">kMaxIntegerValue</a>;</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  IntegerValue candidate_lb;</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  IntegerValue candidate_ub;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  </div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// TODO(user): Improve the complexity if this becomes an issue which</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// may be the case if we do a fixed_search.</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  </div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="comment">// To store equivalent variables in randomized search.</span></div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  std::vector<VarValue> active_vars;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  </div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> IntegerVariable <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : strategy.variables) {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">if</span> (integer_trail->IsCurrentlyIgnored(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>)) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">const</span> IntegerValue lb = integer_trail->LowerBound(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keyword">const</span> IntegerValue ub = integer_trail->UpperBound(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">if</span> (lb == ub) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  IntegerValue <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>(0);</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  IntegerValue coeff(1);</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  IntegerValue offset(0);</div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (<a class="code" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(var_to_coeff_offset_pair, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value())) {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">const</span> <span class="keyword">auto</span> coeff_offset =</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="namespacegtl.html#abce27d097bc5680207b294bdad75f59f">gtl::FindOrDie</a>(var_to_coeff_offset_pair, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value());</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  coeff = coeff_offset.first;</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  offset = coeff_offset.second;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <a class="code" href="base_2logging_8h.html#ab4f56aa24c4c9cddc47a6abd2d747f9a">DCHECK_GT</a>(coeff, 0);</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  </div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// TODO(user): deal with integer overflow in case of wrongly specified</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// coeff.</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">switch</span> (strategy.var_strategy) {</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">case</span> DecisionStrategyProto::CHOOSE_FIRST:</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">case</span> DecisionStrategyProto::CHOOSE_LOWEST_MIN:</div>
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|
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> = coeff * lb + offset;</div>
|
|
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">case</span> DecisionStrategyProto::CHOOSE_HIGHEST_MAX:</div>
|
|
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> = -(coeff * ub + offset);</div>
|
|
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">case</span> DecisionStrategyProto::CHOOSE_MIN_DOMAIN_SIZE:</div>
|
|
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// TODO(user): Evaluate an exact domain computation.</span></div>
|
|
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> = coeff * (ub - lb + 1);</div>
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|
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">case</span> DecisionStrategyProto::CHOOSE_MAX_DOMAIN_SIZE:</div>
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|
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// TODO(user): Evaluate an exact domain computation.</span></div>
|
|
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> = -coeff * (ub - lb + 1);</div>
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|
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">default</span>:</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#acdd38e3c9f22f127d7776920e3079eda">FATAL</a>) << <span class="stringliteral">"Unknown VariableSelectionStrategy "</span></div>
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|
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  << strategy.var_strategy;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (<a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> < candidate_value) {</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  candidate = <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>;</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  candidate_lb = lb;</div>
|
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  candidate_ub = ub;</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  candidate_value = <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>;</div>
|
|
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div>
|
|
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (strategy.var_strategy == DecisionStrategyProto::CHOOSE_FIRST &&</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  !<a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>->randomize_search()) {</div>
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|
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">break</span>;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (<a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>->randomize_search()) {</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">if</span> (active_vars.empty() ||</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a> <= candidate_value +</div>
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|
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>->search_randomization_tolerance()) {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  active_vars.push_back({<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>, <a class="code" href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a>});</div>
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|
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</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>
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|
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">if</span> (candidate == <a class="code" href="namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06">kNoIntegerVariable</a>) <span class="keywordflow">continue</span>;</div>
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|
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span> (<a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>->randomize_search()) {</div>
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|
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <a class="code" href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a>(!active_vars.empty());</div>
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|
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">const</span> IntegerValue threshold(</div>
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|
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  candidate_value + <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>->search_randomization_tolerance());</div>
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|
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">auto</span> is_above_tolerance = [threshold](<span class="keyword">const</span> <a class="code" href="structoperations__research_1_1sat_1_1_var_value.html">VarValue</a>& entry) {</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> entry.value > threshold;</div>
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|
<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">// Remove all values above tolerance.</span></div>
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|
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  active_vars.erase(std::remove_if(active_vars.begin(), active_vars.end(),</div>
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|
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  is_above_tolerance),</div>
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|
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  active_vars.end());</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> winner =</div>
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|
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  std::uniform_int_distribution<int>(0, active_vars.size() - 1)(</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  *<a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_model_random_generator.html">ModelRandomGenerator</a>>());</div>
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|
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  candidate = active_vars[winner].var;</div>
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|
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  candidate_lb = integer_trail->LowerBound(candidate);</div>
|
|
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  candidate_ub = integer_trail->UpperBound(candidate);</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>  <a class="code" href="structoperations__research_1_1sat_1_1_integer_literal.html">IntegerLiteral</a> <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>;</div>
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|
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">switch</span> (strategy.domain_strategy) {</div>
|
|
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">case</span> DecisionStrategyProto::SELECT_MIN_VALUE:</div>
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|
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">IntegerLiteral::LowerOrEqual</a>(candidate, candidate_lb);</div>
|
|
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">case</span> DecisionStrategyProto::SELECT_MAX_VALUE:</div>
|
|
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="structoperations__research_1_1sat_1_1_integer_literal.html#a6c233aafac25ea66d69de93a83c9be63">IntegerLiteral::GreaterOrEqual</a>(candidate, candidate_ub);</div>
|
|
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">case</span> DecisionStrategyProto::SELECT_LOWER_HALF:</div>
|
|
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">IntegerLiteral::LowerOrEqual</a>(</div>
|
|
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  candidate, candidate_lb + (candidate_ub - candidate_lb) / 2);</div>
|
|
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">case</span> DecisionStrategyProto::SELECT_UPPER_HALF:</div>
|
|
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="structoperations__research_1_1sat_1_1_integer_literal.html#a6c233aafac25ea66d69de93a83c9be63">IntegerLiteral::GreaterOrEqual</a>(</div>
|
|
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  candidate, candidate_ub - (candidate_ub - candidate_lb) / 2);</div>
|
|
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">case</span> DecisionStrategyProto::SELECT_MEDIAN_VALUE:</div>
|
|
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">// TODO(user): Implement the correct method.</span></div>
|
|
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a> = <a class="code" href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">IntegerLiteral::LowerOrEqual</a>(candidate, candidate_lb);</div>
|
|
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">break</span>;</div>
|
|
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">default</span>:</div>
|
|
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#acdd38e3c9f22f127d7776920e3079eda">FATAL</a>) << <span class="stringliteral">"Unknown DomainReductionStrategy "</span></div>
|
|
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  << strategy.domain_strategy;</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>  <span class="keywordflow">return</span> <a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a>(<a class="code" href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a>);</div>
|
|
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  }</div>
|
|
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> <a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a>();</div>
|
|
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  };</div>
|
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<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> }</div>
|
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<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
|
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<div class="line"><a name="l00173"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#aef9a9e314dd32a66b7540b0ae367eb4f"> 173</a></span> std::function<<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a>()> <a class="code" href="namespaceoperations__research_1_1sat.html#aef9a9e314dd32a66b7540b0ae367eb4f">ConstructSearchStrategy</a>(</div>
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|
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">const</span> CpModelProto& cp_model_proto,</div>
|
|
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keyword">const</span> std::vector<IntegerVariable>& variable_mapping,</div>
|
|
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  IntegerVariable objective_var, <a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
|
|
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="comment">// Default strategy is to instantiate the IntegerVariable in order.</span></div>
|
|
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  std::function<<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a>()> default_search_strategy = <span class="keyword">nullptr</span>;</div>
|
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<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> instantiate_all_variables =</div>
|
|
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<SatParameters>()->instantiate_all_variables();</div>
|
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<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>  <span class="keywordflow">if</span> (instantiate_all_variables) {</div>
|
|
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  std::vector<IntegerVariable> decisions;</div>
|
|
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> IntegerVariable <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> : variable_mapping) {</div>
|
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<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">if</span> (<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> == <a class="code" href="namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06">kNoIntegerVariable</a>) <span class="keywordflow">continue</span>;</div>
|
|
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div>
|
|
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// Make sure we try to fix the objective to its lowest value first.</span></div>
|
|
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">if</span> (<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> == <a class="code" href="namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22">NegationOf</a>(objective_var)) {</div>
|
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<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  decisions.push_back(objective_var);</div>
|
|
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  } <span class="keywordflow">else</span> {</div>
|
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<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  decisions.push_back(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>);</div>
|
|
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div>
|
|
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  }</div>
|
|
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  default_search_strategy =</div>
|
|
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a0b08971dbb223f77e7fc9c41a77fdc7b">FirstUnassignedVarAtItsMinHeuristic</a>(decisions, <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
|
|
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  }</div>
|
|
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  </div>
|
|
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  std::vector<Strategy> strategies;</div>
|
|
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  absl::flat_hash_map<int, std::pair<int64, int64>> var_to_coeff_offset_pair;</div>
|
|
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> DecisionStrategyProto& <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a> : cp_model_proto.search_strategy()) {</div>
|
|
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  strategies.push_back(<a class="code" href="structoperations__research_1_1sat_1_1_strategy.html">Strategy</a>());</div>
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|
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <a class="code" href="structoperations__research_1_1sat_1_1_strategy.html">Strategy</a>& strategy = strategies.back();</div>
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<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.variables()) {</div>
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<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  strategy.<a class="code" href="structoperations__research_1_1sat_1_1_strategy.html#a3af5431410dfaccc5ec8fdfb8f1d8e3e">variables</a>.push_back(</div>
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<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref) ? variable_mapping[ref]</div>
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<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  : <a class="code" href="namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22">NegationOf</a>(variable_mapping[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)]));</div>
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<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div>
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<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  strategy.<a class="code" href="structoperations__research_1_1sat_1_1_strategy.html#a1a44912d5eeec93b48624d8c0ef80764">var_strategy</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.variable_selection_strategy();</div>
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<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  strategy.<a class="code" href="structoperations__research_1_1sat_1_1_strategy.html#a3fb4ec4afb28873c4155e5a96f836d0f">domain_strategy</a> = <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.domain_reduction_strategy();</div>
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<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keyword">auto</span>& transform : <a class="code" href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a>.transformations()) {</div>
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<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> ref = transform.var();</div>
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<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keyword">const</span> IntegerVariable <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> =</div>
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<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <a class="code" href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">RefIsPositive</a>(ref) ? variable_mapping[ref]</div>
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<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  : <a class="code" href="namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22">NegationOf</a>(variable_mapping[<a class="code" href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">PositiveRef</a>(ref)]);</div>
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<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">if</span> (!<a class="code" href="namespacegtl.html#aae28e97bd1fa93cb0032642550da7455">gtl::ContainsKey</a>(var_to_coeff_offset_pair, <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value())) {</div>
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<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  var_to_coeff_offset_pair[<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>.value()] = {transform.positive_coeff(),</div>
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<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  transform.offset()};</div>
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<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div>
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<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div>
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<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  }</div>
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<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">if</span> (instantiate_all_variables) {</div>
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<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#abcf8d0c663710a1e395489e62de487b1">SequentialSearch</a>({<a class="code" href="namespaceoperations__research_1_1sat.html#a8eaaab6887866402ed7380fb2e6344cb">ConstructSearchStrategyInternal</a>(</div>
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<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  var_to_coeff_offset_pair, strategies, <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>),</div>
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<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  default_search_strategy});</div>
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<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1sat.html#a8eaaab6887866402ed7380fb2e6344cb">ConstructSearchStrategyInternal</a>(var_to_coeff_offset_pair, strategies,</div>
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<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>);</div>
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<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</div>
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<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> }</div>
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<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  </div>
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<div class="line"><a name="l00231"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#afb3c98e67e212632d35259e550235d0a"> 231</a></span> std::function<<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a>()> <a class="code" href="namespaceoperations__research_1_1sat.html#afb3c98e67e212632d35259e550235d0a">InstrumentSearchStrategy</a>(</div>
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<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">const</span> CpModelProto& cp_model_proto,</div>
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<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keyword">const</span> std::vector<IntegerVariable>& variable_mapping,</div>
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<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keyword">const</span> std::function<<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a>()>& instrumented_strategy,</div>
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<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <a class="code" href="classoperations__research_1_1sat_1_1_model.html">Model</a>* <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>) {</div>
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<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  std::vector<int> ref_to_display;</div>
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<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < cp_model_proto.variables_size(); ++i) {</div>
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<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">if</span> (variable_mapping[i] == <a class="code" href="namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06">kNoIntegerVariable</a>) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span> (cp_model_proto.variables(i).name().empty()) <span class="keywordflow">continue</span>;</div>
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<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  ref_to_display.push_back(i);</div>
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<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  }</div>
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<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  std::sort(ref_to_display.begin(), ref_to_display.end(), [&](<span class="keywordtype">int</span> i, <span class="keywordtype">int</span> j) {</div>
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<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  return cp_model_proto.variables(i).name() <</div>
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<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  cp_model_proto.variables(j).name();</div>
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<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  });</div>
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<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  </div>
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<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  std::vector<std::pair<int64, int64>> old_domains(variable_mapping.size());</div>
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<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">return</span> [instrumented_strategy, <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>, variable_mapping, cp_model_proto,</div>
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<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  old_domains, ref_to_display]() <span class="keyword">mutable</span> {</div>
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<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">BooleanOrIntegerLiteral</a> decision = instrumented_strategy();</div>
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<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">if</span> (!decision.<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html#ae26b73bbf70dc88433be39df364ca7c1">HasValue</a>()) <span class="keywordflow">return</span> decision;</div>
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<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  </div>
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<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">if</span> (decision.<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html#a3c6f3ae96a90c7fcef34dd0f1ce0297e">boolean_literal_index</a> != <a class="code" href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">kNoLiteralIndex</a>) {</div>
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<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a> l = <a class="code" href="classoperations__research_1_1sat_1_1_literal.html">Literal</a>(decision.<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html#a3c6f3ae96a90c7fcef34dd0f1ce0297e">boolean_literal_index</a>);</div>
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<div class="line"><a name="l00255"></a><span class="lineno"> 255</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">"Boolean decision "</span> << l;</div>
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<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <a class="code" href="structoperations__research_1_1sat_1_1_integer_literal.html">IntegerLiteral</a> i_lit :</div>
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<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Get<<a class="code" href="classoperations__research_1_1sat_1_1_integer_encoder.html">IntegerEncoder</a>>()-><a class="code" href="classoperations__research_1_1sat_1_1_integer_encoder.html#a0d782ddea6e94b7dfbb612f1a64c2f7b">GetAllIntegerLiterals</a>(l)) {</div>
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<div class="line"><a name="l00258"></a><span class="lineno"> 258</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">" - associated with "</span> << i_lit;</div>
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<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  }</div>
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<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  } <span class="keywordflow">else</span> {</div>
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<div class="line"><a name="l00261"></a><span class="lineno"> 261</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">"Integer decision "</span> << decision.<a class="code" href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html#aee356429e37f0750e38ee17ae1464a00">integer_literal</a>;</div>
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<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  }</div>
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<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> level = <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->Get<<a class="code" href="classoperations__research_1_1sat_1_1_trail.html">Trail</a>>()->CurrentDecisionLevel();</div>
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<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  std::string to_display =</div>
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<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  absl::StrCat(<span class="stringliteral">"Diff since last call, level="</span>, level, <span class="stringliteral">"\n"</span>);</div>
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<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <a class="code" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>* integer_trail = <a class="code" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>->GetOrCreate<<a class="code" href="classoperations__research_1_1sat_1_1_integer_trail.html">IntegerTrail</a>>();</div>
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<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> <span class="keywordtype">int</span> ref : ref_to_display) {</div>
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<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keyword">const</span> IntegerVariable <a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a> = variable_mapping[ref];</div>
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<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keyword">const</span> std::pair<int64, int64> new_domain(</div>
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<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  integer_trail-><a class="code" href="classoperations__research_1_1sat_1_1_integer_trail.html#ab857cd2aead68952d9fe92a8ad8d3ac9">LowerBound</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).value(),</div>
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<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  integer_trail-><a class="code" href="classoperations__research_1_1sat_1_1_integer_trail.html#a8b6d5a25e6ad3d28a85b1924471e2cac">UpperBound</a>(<a class="code" href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a>).value());</div>
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<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">if</span> (new_domain != old_domains[ref]) {</div>
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<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  absl::StrAppend(&to_display, cp_model_proto.variables(ref).name(), <span class="stringliteral">" ["</span>,</div>
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<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  old_domains[ref].first, <span class="stringliteral">","</span>, old_domains[ref].second,</div>
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<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="stringliteral">"] -> ["</span>, new_domain.first, <span class="stringliteral">","</span>, new_domain.second,</div>
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<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="stringliteral">"]\n"</span>);</div>
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<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  old_domains[ref] = new_domain;</div>
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<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  }</div>
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<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  }</div>
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<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <a class="code" href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a>(<a class="code" href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a>) << to_display;</div>
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<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordflow">return</span> decision;</div>
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<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  };</div>
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<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> }</div>
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<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  </div>
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<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment">// Note: in flatzinc setting, we know we always have a fixed search defined.</span></div>
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<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment">// Things to try:</span></div>
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<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment">// - Specialize for purely boolean problems</span></div>
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<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment">// - Disable linearization_level options for non linear problems</span></div>
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<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment">// - Fast restart in randomized search</span></div>
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<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> <span class="comment">// - Different propatation levels for scheduling constraints</span></div>
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<div class="line"><a name="l00292"></a><span class="lineno"><a class="line" href="namespaceoperations__research_1_1sat.html#accb8be601562b35adeea0682f3ea560c"> 292</a></span> std::vector<SatParameters> <a class="code" href="namespaceoperations__research_1_1sat.html#accb8be601562b35adeea0682f3ea560c">GetDiverseSetOfParameters</a>(</div>
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<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keyword">const</span> SatParameters& base_params, <span class="keyword">const</span> CpModelProto& cp_model,</div>
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<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> num_workers) {</div>
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<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// Defines a set of named strategies so it is easier to read in one place</span></div>
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<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="comment">// the one that are used. See below.</span></div>
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<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  std::map<std::string, SatParameters> strategies;</div>
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<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  </div>
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<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">// Lp variations only.</span></div>
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<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  {</div>
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<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  SatParameters new_params = base_params;</div>
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<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  new_params.set_linearization_level(0);</div>
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<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  strategies[<span class="stringliteral">"no_lp"</span>] = new_params;</div>
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<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  new_params.set_linearization_level(1);</div>
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<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  strategies[<span class="stringliteral">"default_lp"</span>] = new_params;</div>
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<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  new_params.set_linearization_level(2);</div>
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<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  new_params.set_add_lp_constraints_lazily(<span class="keyword">false</span>);</div>
|
|
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  strategies[<span class="stringliteral">"max_lp"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  }</div>
|
|
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  </div>
|
|
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="comment">// Core. Note that we disable the lp here because it is faster on the minizinc</span></div>
|
|
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="comment">// benchmark.</span></div>
|
|
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="comment">// TODO(user): Do more experiments, the LP with core could be useful, but we</span></div>
|
|
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="comment">// probably need to incorporate the newly created integer variables from the</span></div>
|
|
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="comment">// core algorithm into the LP.</span></div>
|
|
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  {</div>
|
|
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  SatParameters new_params = base_params;</div>
|
|
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  new_params.set_search_branching(SatParameters::AUTOMATIC_SEARCH);</div>
|
|
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  new_params.set_optimize_with_core(<span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  new_params.set_linearization_level(0);</div>
|
|
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  strategies[<span class="stringliteral">"core"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  }</div>
|
|
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  </div>
|
|
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="comment">// It can be interesting to try core and lp.</span></div>
|
|
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  {</div>
|
|
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  SatParameters new_params = base_params;</div>
|
|
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  new_params.set_search_branching(SatParameters::AUTOMATIC_SEARCH);</div>
|
|
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  new_params.set_optimize_with_core(<span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  new_params.set_linearization_level(1);</div>
|
|
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  strategies[<span class="stringliteral">"core_default_lp"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  }</div>
|
|
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  </div>
|
|
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  {</div>
|
|
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  SatParameters new_params = base_params;</div>
|
|
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  new_params.set_search_branching(SatParameters::AUTOMATIC_SEARCH);</div>
|
|
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  new_params.set_optimize_with_core(<span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  new_params.set_linearization_level(2);</div>
|
|
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  strategies[<span class="stringliteral">"core_max_lp"</span>] = new_params;</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>  </div>
|
|
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  {</div>
|
|
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  SatParameters new_params = base_params;</div>
|
|
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  new_params.set_search_branching(SatParameters::AUTOMATIC_SEARCH);</div>
|
|
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  new_params.set_use_probing_search(<span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  strategies[<span class="stringliteral">"probing"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  }</div>
|
|
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  </div>
|
|
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="comment">// Search variation.</span></div>
|
|
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  {</div>
|
|
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  SatParameters new_params = base_params;</div>
|
|
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  new_params.set_search_branching(SatParameters::AUTOMATIC_SEARCH);</div>
|
|
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  strategies[<span class="stringliteral">"auto"</span>] = new_params;</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>  new_params.set_search_branching(SatParameters::FIXED_SEARCH);</div>
|
|
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  strategies[<span class="stringliteral">"fixed"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  </div>
|
|
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  new_params.set_search_branching(</div>
|
|
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  SatParameters::PORTFOLIO_WITH_QUICK_RESTART_SEARCH);</div>
|
|
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  strategies[<span class="stringliteral">"quick_restart"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  </div>
|
|
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  new_params.set_search_branching(</div>
|
|
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  SatParameters::PORTFOLIO_WITH_QUICK_RESTART_SEARCH);</div>
|
|
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  new_params.set_linearization_level(0);</div>
|
|
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  strategies[<span class="stringliteral">"quick_restart_no_lp"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  </div>
|
|
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="comment">// We force the max lp here too.</span></div>
|
|
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  new_params.set_linearization_level(2);</div>
|
|
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  new_params.set_search_branching(SatParameters::LP_SEARCH);</div>
|
|
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  strategies[<span class="stringliteral">"reduced_costs"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  </div>
|
|
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="comment">// For this one, we force other param too.</span></div>
|
|
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  new_params.set_linearization_level(2);</div>
|
|
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  new_params.set_search_branching(SatParameters::PSEUDO_COST_SEARCH);</div>
|
|
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  new_params.set_exploit_best_solution(<span class="keyword">true</span>);</div>
|
|
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  strategies[<span class="stringliteral">"pseudo_costs"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  }</div>
|
|
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  </div>
|
|
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="comment">// Less encoding.</span></div>
|
|
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  {</div>
|
|
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  SatParameters new_params = base_params;</div>
|
|
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  new_params.set_boolean_encoding_level(0);</div>
|
|
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  strategies[<span class="stringliteral">"less_encoding"</span>] = new_params;</div>
|
|
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  }</div>
|
|
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  </div>
|
|
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="comment">// Our current set of strategies</span></div>
|
|
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="comment">//</span></div>
|
|
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="comment">// TODO(user, fdid): Avoid launching two strategies if they are the same,</span></div>
|
|
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">// like if there is no lp, or everything is already linearized at level 1.</span></div>
|
|
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  std::vector<std::string> names;</div>
|
|
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span> (base_params.reduce_memory_usage_in_interleave_mode() &&</div>
|
|
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  base_params.interleave_search()) {</div>
|
|
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="comment">// Low memory mode for interleaved search in single thread.</span></div>
|
|
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">if</span> (cp_model.has_objective()) {</div>
|
|
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  names.push_back(<span class="stringliteral">"default_lp"</span>);</div>
|
|
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  names.push_back(!cp_model.search_strategy().empty() ? <span class="stringliteral">"fixed"</span></div>
|
|
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  : <span class="stringliteral">"pseudo_costs"</span>);</div>
|
|
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  names.push_back(cp_model.objective().vars_size() > 1 ? <span class="stringliteral">"core"</span> : <span class="stringliteral">"no_lp"</span>);</div>
|
|
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  names.push_back(<span class="stringliteral">"max_lp"</span>);</div>
|
|
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  names.push_back(<span class="stringliteral">"default_lp"</span>);</div>
|
|
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  names.push_back(cp_model.search_strategy_size() > 0 ? <span class="stringliteral">"fixed"</span> : <span class="stringliteral">"no_lp"</span>);</div>
|
|
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  names.push_back(<span class="stringliteral">"less_encoding"</span>);</div>
|
|
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  names.push_back(<span class="stringliteral">"max_lp"</span>);</div>
|
|
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  names.push_back(<span class="stringliteral">"quick_restart"</span>);</div>
|
|
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  }</div>
|
|
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (cp_model.has_objective()) {</div>
|
|
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  names.push_back(<span class="stringliteral">"default_lp"</span>);</div>
|
|
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  names.push_back(!cp_model.search_strategy().empty() ? <span class="stringliteral">"fixed"</span></div>
|
|
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  : <span class="stringliteral">"reduced_costs"</span>);</div>
|
|
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  names.push_back(<span class="stringliteral">"pseudo_costs"</span>);</div>
|
|
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  names.push_back(<span class="stringliteral">"no_lp"</span>);</div>
|
|
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  names.push_back(<span class="stringliteral">"max_lp"</span>);</div>
|
|
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordflow">if</span> (cp_model.objective().vars_size() > 1) names.push_back(<span class="stringliteral">"core"</span>);</div>
|
|
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="comment">// TODO(user): Experiment with core and LP.</span></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>  <span class="comment">// Only add this strategy if we have enough worker left for LNS.</span></div>
|
|
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordflow">if</span> (num_workers > 8 || base_params.interleave_search()) {</div>
|
|
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  names.push_back(<span class="stringliteral">"quick_restart"</span>);</div>
|
|
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  }</div>
|
|
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">if</span> (num_workers > 10) {</div>
|
|
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  names.push_back(<span class="stringliteral">"quick_restart_no_lp"</span>);</div>
|
|
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  }</div>
|
|
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  } <span class="keywordflow">else</span> {</div>
|
|
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  names.push_back(<span class="stringliteral">"default_lp"</span>);</div>
|
|
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="keywordflow">if</span> (cp_model.search_strategy_size() > 0) names.push_back(<span class="stringliteral">"fixed"</span>);</div>
|
|
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  names.push_back(<span class="stringliteral">"less_encoding"</span>);</div>
|
|
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  names.push_back(<span class="stringliteral">"no_lp"</span>);</div>
|
|
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  names.push_back(<span class="stringliteral">"max_lp"</span>);</div>
|
|
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  names.push_back(<span class="stringliteral">"quick_restart"</span>);</div>
|
|
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="keywordflow">if</span> (num_workers > 10) {</div>
|
|
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  names.push_back(<span class="stringliteral">"quick_restart_no_lp"</span>);</div>
|
|
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  }</div>
|
|
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  }</div>
|
|
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordflow">if</span> (num_workers > 12) {</div>
|
|
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  names.push_back(<span class="stringliteral">"probing"</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>  </div>
|
|
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="comment">// Creates the diverse set of parameters with names and seed. We remove the</span></div>
|
|
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="comment">// last ones if needed below.</span></div>
|
|
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  std::vector<SatParameters> result;</div>
|
|
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> std::string& <a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a> : names) {</div>
|
|
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  SatParameters new_params = strategies.at(<a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>);</div>
|
|
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  new_params.set_name(<a class="code" href="default__search_8cc.html#ac673bc430bdc3fdaa09f7becf98ef267">name</a>);</div>
|
|
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  new_params.set_random_seed(result.size() + 1);</div>
|
|
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  result.push_back(new_params);</div>
|
|
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  }</div>
|
|
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  </div>
|
|
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="comment">// If there is no objective, we complete with randomized fixed search.</span></div>
|
|
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="comment">// If there is an objective, the extra workers will use LNS.</span></div>
|
|
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">if</span> (!cp_model.has_objective()) {</div>
|
|
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  <span class="keywordtype">int</span> target = num_workers;</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>  <span class="comment">// If strategies that do not require a full worker are present, leave one</span></div>
|
|
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <span class="comment">// worker for them.</span></div>
|
|
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  <span class="keywordflow">if</span> (!base_params.interleave_search() &&</div>
|
|
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  (base_params.use_rins_lns() || base_params.use_relaxation_lns() ||</div>
|
|
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  base_params.use_feasibility_pump())) {</div>
|
|
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  target = <a class="code" href="alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a">std::max</a>(1, num_workers - 1);</div>
|
|
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  }</div>
|
|
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  </div>
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<div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  <span class="keywordtype">int</span> <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a> = 1;</div>
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<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">while</span> (result.size() < target) {</div>
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<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="comment">// TODO(user): This doesn't make sense if there is no fixed search.</span></div>
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<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  SatParameters new_params = base_params;</div>
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<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  new_params.set_search_branching(SatParameters::FIXED_SEARCH);</div>
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<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  new_params.set_randomize_search(<span class="keyword">true</span>);</div>
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<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  new_params.set_search_randomization_tolerance(<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>);</div>
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<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  new_params.set_random_seed(result.size() + 1);</div>
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<div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  new_params.set_name(absl::StrCat(<span class="stringliteral">"random_"</span>, <a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>));</div>
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<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  result.push_back(new_params);</div>
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<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  ++<a class="code" href="pack_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>;</div>
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<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  }</div>
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<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  }</div>
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<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  </div>
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<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  <span class="comment">// If we are not in interleave search, we cannot run more strategies than</span></div>
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<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  <span class="comment">// the number of worker.</span></div>
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<div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="comment">// TODO(user): consider using LNS if we use a small number of workers.</span></div>
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<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keywordflow">if</span> (!base_params.interleave_search() && result.size() > num_workers) {</div>
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<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  result.resize(num_workers);</div>
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<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  }</div>
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<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  </div>
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<div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordflow">return</span> result;</div>
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<div class="line"><a name="l00485"></a><span class="lineno"> 485</span> }</div>
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<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  </div>
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<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> } <span class="comment">// namespace sat</span></div>
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<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> } <span class="comment">// namespace operations_research</span></div>
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<div class="ttc" id="aalldiff__cst_8cc_html_a9d0c202d5fdd62f4fa2c613339ff168a"><div class="ttname"><a href="alldiff__cst_8cc.html#a9d0c202d5fdd62f4fa2c613339ff168a">max</a></div><div class="ttdeci">int64 max</div><div class="ttdef"><b>Definition:</b> <a href="alldiff__cst_8cc_source.html#l00139">alldiff_cst.cc:139</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_a3e1cfef60e774a81f30eaddf26a3a274"><div class="ttname"><a href="base_2logging_8h.html#a3e1cfef60e774a81f30eaddf26a3a274">CHECK</a></div><div class="ttdeci">#define CHECK(condition)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00495">base/logging.h:495</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_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#l00890">base/logging.h:890</a></div></div>
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<div class="ttc" id="abase_2logging_8h_html_accad43a85d781d53381cd53a9894b6ae"><div class="ttname"><a href="base_2logging_8h.html#accad43a85d781d53381cd53a9894b6ae">LOG</a></div><div class="ttdeci">#define LOG(severity)</div><div class="ttdef"><b>Definition:</b> <a href="base_2logging_8h_source.html#l00420">base/logging.h:420</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_encoder_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_encoder.html">operations_research::sat::IntegerEncoder</a></div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00276">integer.h:276</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_encoder_html_a0d782ddea6e94b7dfbb612f1a64c2f7b"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_encoder.html#a0d782ddea6e94b7dfbb612f1a64c2f7b">operations_research::sat::IntegerEncoder::GetAllIntegerLiterals</a></div><div class="ttdeci">const InlinedIntegerLiteralVector & GetAllIntegerLiterals(Literal lit) const</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00400">integer.h:400</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html">operations_research::sat::IntegerTrail</a></div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00540">integer.h:540</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html_a8b6d5a25e6ad3d28a85b1924471e2cac"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html#a8b6d5a25e6ad3d28a85b1924471e2cac">operations_research::sat::IntegerTrail::UpperBound</a></div><div class="ttdeci">IntegerValue UpperBound(IntegerVariable i) const</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01304">integer.h:1304</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_integer_trail_html_ab857cd2aead68952d9fe92a8ad8d3ac9"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_integer_trail.html#ab857cd2aead68952d9fe92a8ad8d3ac9">operations_research::sat::IntegerTrail::LowerBound</a></div><div class="ttdeci">IntegerValue LowerBound(IntegerVariable i) const</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01300">integer.h:1300</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_literal_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_literal.html">operations_research::sat::Literal</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00064">sat_base.h:64</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_model_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_model.html">operations_research::sat::Model</a></div><div class="ttdoc">Class that owns everything related to a particular optimization model.</div><div class="ttdef"><b>Definition:</b> <a href="sat_2model_8h_source.html#l00038">sat/model.h:38</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_model_random_generator_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_model_random_generator.html">operations_research::sat::ModelRandomGenerator</a></div><div class="ttdef"><b>Definition:</b> <a href="sat_2util_8h_source.html#l00039">sat/util.h:39</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1sat_1_1_trail_html"><div class="ttname"><a href="classoperations__research_1_1sat_1_1_trail.html">operations_research::sat::Trail</a></div><div class="ttdef"><b>Definition:</b> <a href="sat__base_8h_source.html#l00233">sat_base.h:233</a></div></div>
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<div class="ttc" id="acp__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#l00108">cp_model_fz_solver.cc:108</a></div></div>
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<div class="ttc" id="acp__model__fz__solver_8cc_html_aed003f5eb5197bc586b7ef2c36a63da2"><div class="ttname"><a href="cp__model__fz__solver_8cc.html#aed003f5eb5197bc586b7ef2c36a63da2">proto</a></div><div class="ttdeci">CpModelProto proto</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__fz__solver_8cc_source.html#l00107">cp_model_fz_solver.cc:107</a></div></div>
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<div class="ttc" id="acp__model__search_8h_html"><div class="ttname"><a href="cp__model__search_8h.html">cp_model_search.h</a></div></div>
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<div class="ttc" id="acp__model__utils_8h_html"><div class="ttname"><a href="cp__model__utils_8h.html">cp_model_utils.h</a></div></div>
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<div class="ttc" id="adefault__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#l00808">default_search.cc:808</a></div></div>
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<div class="ttc" id="ademon__profiler_8cc_html_a21edc7ca4cc5802c8779d68556bc09cf"><div class="ttname"><a href="demon__profiler_8cc.html#a21edc7ca4cc5802c8779d68556bc09cf">value</a></div><div class="ttdeci">int64 value</div><div class="ttdef"><b>Definition:</b> <a href="demon__profiler_8cc_source.html#l00043">demon_profiler.cc:43</a></div></div>
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<div class="ttc" id="aexpr__array_8cc_html_a472a99923cbe11ae7b5a5d157d9ad465"><div class="ttname"><a href="expr__array_8cc.html#a472a99923cbe11ae7b5a5d157d9ad465">var</a></div><div class="ttdeci">IntVar * var</div><div class="ttdef"><b>Definition:</b> <a href="expr__array_8cc_source.html#l01858">expr_array.cc:1858</a></div></div>
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<div class="ttc" id="agurobi__interface_8cc_html_a0728f23c9a47655d38e0bf1a2f200bcf"><div class="ttname"><a href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a></div><div class="ttdeci">GRBmodel * model</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__interface_8cc_source.html#l00272">gurobi_interface.cc:272</a></div></div>
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<div class="ttc" id="alog__severity_8h_html_ab4a2cbab234914b320b7fae11b6e8cb9"><div class="ttname"><a href="log__severity_8h.html#ab4a2cbab234914b320b7fae11b6e8cb9">INFO</a></div><div class="ttdeci">const int INFO</div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00031">log_severity.h:31</a></div></div>
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<div class="ttc" id="alog__severity_8h_html_acdd38e3c9f22f127d7776920e3079eda"><div class="ttname"><a href="log__severity_8h.html#acdd38e3c9f22f127d7776920e3079eda">FATAL</a></div><div class="ttdeci">const int FATAL</div><div class="ttdef"><b>Definition:</b> <a href="log__severity_8h_source.html#l00032">log_severity.h:32</a></div></div>
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<div class="ttc" id="anamespacegtl_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#l00170">map_util.h:170</a></div></div>
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<div class="ttc" id="anamespacegtl_html_abce27d097bc5680207b294bdad75f59f"><div class="ttname"><a href="namespacegtl.html#abce27d097bc5680207b294bdad75f59f">gtl::FindOrDie</a></div><div class="ttdeci">const Collection::value_type::second_type & FindOrDie(const Collection &collection, const typename Collection::value_type::first_type &key)</div><div class="ttdef"><b>Definition:</b> <a href="map__util_8h_source.html#l00176">map_util.h:176</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a0b08971dbb223f77e7fc9c41a77fdc7b"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a0b08971dbb223f77e7fc9c41a77fdc7b">operations_research::sat::FirstUnassignedVarAtItsMinHeuristic</a></div><div class="ttdeci">std::function< BooleanOrIntegerLiteral()> FirstUnassignedVarAtItsMinHeuristic(const std::vector< IntegerVariable > &vars, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8cc_source.html#l00153">integer_search.cc:153</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a1227e67513602591fb959e35c9de66e8"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a1227e67513602591fb959e35c9de66e8">operations_research::sat::kMaxIntegerValue</a></div><div class="ttdeci">constexpr IntegerValue kMaxIntegerValue(std::numeric_limits< IntegerValue::ValueType >::max() - 1)</div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a217338425de4389014563f1f24331713"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a217338425de4389014563f1f24331713">operations_research::sat::RefIsPositive</a></div><div class="ttdeci">bool RefIsPositive(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00034">cp_model_utils.h:34</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a2dbcb7017d468a17bdb30252af5c6c31"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a2dbcb7017d468a17bdb30252af5c6c31">operations_research::sat::kNoLiteralIndex</a></div><div class="ttdeci">const LiteralIndex kNoLiteralIndex(-1)</div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a5bd8c44473618b7eafd33ba978db2f06"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a5bd8c44473618b7eafd33ba978db2f06">operations_research::sat::kNoIntegerVariable</a></div><div class="ttdeci">const IntegerVariable kNoIntegerVariable(-1)</div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_a8eaaab6887866402ed7380fb2e6344cb"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#a8eaaab6887866402ed7380fb2e6344cb">operations_research::sat::ConstructSearchStrategyInternal</a></div><div class="ttdeci">const std::function< BooleanOrIntegerLiteral()> ConstructSearchStrategyInternal(const absl::flat_hash_map< int, std::pair< int64, int64 >> &var_to_coeff_offset_pair, const std::vector< Strategy > &strategies, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00042">cp_model_search.cc:42</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_aae43e784db06c0974ce59ebbe8dd2b22"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#aae43e784db06c0974ce59ebbe8dd2b22">operations_research::sat::NegationOf</a></div><div class="ttdeci">std::vector< IntegerVariable > NegationOf(const std::vector< IntegerVariable > &vars)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8cc_source.html#l00027">integer.cc:27</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_abcf8d0c663710a1e395489e62de487b1"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#abcf8d0c663710a1e395489e62de487b1">operations_research::sat::SequentialSearch</a></div><div class="ttdeci">std::function< BooleanOrIntegerLiteral()> SequentialSearch(std::vector< std::function< BooleanOrIntegerLiteral()>> heuristics)</div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8cc_source.html#l00188">integer_search.cc:188</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_accb8be601562b35adeea0682f3ea560c"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#accb8be601562b35adeea0682f3ea560c">operations_research::sat::GetDiverseSetOfParameters</a></div><div class="ttdeci">std::vector< SatParameters > GetDiverseSetOfParameters(const SatParameters &base_params, const CpModelProto &cp_model, const int num_workers)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00292">cp_model_search.cc:292</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_acdbc8ad33149d45a6e6fcd8b72fd68ed"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#acdbc8ad33149d45a6e6fcd8b72fd68ed">operations_research::sat::PositiveRef</a></div><div class="ttdeci">int PositiveRef(int ref)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__utils_8h_source.html#l00033">cp_model_utils.h:33</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_aef9a9e314dd32a66b7540b0ae367eb4f"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#aef9a9e314dd32a66b7540b0ae367eb4f">operations_research::sat::ConstructSearchStrategy</a></div><div class="ttdeci">std::function< BooleanOrIntegerLiteral()> ConstructSearchStrategy(const CpModelProto &cp_model_proto, const std::vector< IntegerVariable > &variable_mapping, IntegerVariable objective_var, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00173">cp_model_search.cc:173</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1sat_html_afb3c98e67e212632d35259e550235d0a"><div class="ttname"><a href="namespaceoperations__research_1_1sat.html#afb3c98e67e212632d35259e550235d0a">operations_research::sat::InstrumentSearchStrategy</a></div><div class="ttdeci">std::function< BooleanOrIntegerLiteral()> InstrumentSearchStrategy(const CpModelProto &cp_model_proto, const std::vector< IntegerVariable > &variable_mapping, const std::function< BooleanOrIntegerLiteral()> &instrumented_strategy, Model *model)</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00231">cp_model_search.cc:231</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_html"><div class="ttname"><a href="namespaceoperations__research.html">operations_research</a></div><div class="ttdoc">The vehicle routing library lets one model and solve generic vehicle routing problems ranging from th...</div><div class="ttdef"><b>Definition:</b> <a href="dense__doubly__linked__list_8h_source.html#l00021">dense_doubly_linked_list.h:21</a></div></div>
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<div class="ttc" id="aoptimization_8cc_html_af63dcc00f2023fdf498e0829e6fb8a6b"><div class="ttname"><a href="optimization_8cc.html#af63dcc00f2023fdf498e0829e6fb8a6b">literal</a></div><div class="ttdeci">Literal literal</div><div class="ttdef"><b>Definition:</b> <a href="optimization_8cc_source.html#l00084">optimization.cc:84</a></div></div>
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<div class="ttc" id="apack_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#l00508">pack.cc:508</a></div></div>
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<div class="ttc" id="asat_2util_8h_html"><div class="ttname"><a href="sat_2util_8h.html">util.h</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_boolean_or_integer_literal_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html">operations_research::sat::BooleanOrIntegerLiteral</a></div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8h_source.html#l00039">integer_search.h:39</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_boolean_or_integer_literal_html_a3c6f3ae96a90c7fcef34dd0f1ce0297e"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html#a3c6f3ae96a90c7fcef34dd0f1ce0297e">operations_research::sat::BooleanOrIntegerLiteral::boolean_literal_index</a></div><div class="ttdeci">LiteralIndex boolean_literal_index</div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8h_source.html#l00051">integer_search.h:51</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_boolean_or_integer_literal_html_ae26b73bbf70dc88433be39df364ca7c1"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html#ae26b73bbf70dc88433be39df364ca7c1">operations_research::sat::BooleanOrIntegerLiteral::HasValue</a></div><div class="ttdeci">bool HasValue() const</div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8h_source.html#l00046">integer_search.h:46</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_boolean_or_integer_literal_html_aee356429e37f0750e38ee17ae1464a00"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_boolean_or_integer_literal.html#aee356429e37f0750e38ee17ae1464a00">operations_research::sat::BooleanOrIntegerLiteral::integer_literal</a></div><div class="ttdeci">IntegerLiteral integer_literal</div><div class="ttdef"><b>Definition:</b> <a href="integer__search_8h_source.html#l00052">integer_search.h:52</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_integer_literal_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_integer_literal.html">operations_research::sat::IntegerLiteral</a></div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l00153">integer.h:153</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_integer_literal_html_a3e2eb445631727dd4abf1d5343f16b2f"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_integer_literal.html#a3e2eb445631727dd4abf1d5343f16b2f">operations_research::sat::IntegerLiteral::LowerOrEqual</a></div><div class="ttdeci">static IntegerLiteral LowerOrEqual(IntegerVariable i, IntegerValue bound)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01270">integer.h:1270</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_integer_literal_html_a6c233aafac25ea66d69de93a83c9be63"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_integer_literal.html#a6c233aafac25ea66d69de93a83c9be63">operations_research::sat::IntegerLiteral::GreaterOrEqual</a></div><div class="ttdeci">static IntegerLiteral GreaterOrEqual(IntegerVariable i, IntegerValue bound)</div><div class="ttdef"><b>Definition:</b> <a href="integer_8h_source.html#l01264">integer.h:1264</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_strategy_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_strategy.html">operations_research::sat::Strategy</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00030">cp_model_search.cc:30</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_strategy_html_a1a44912d5eeec93b48624d8c0ef80764"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_strategy.html#a1a44912d5eeec93b48624d8c0ef80764">operations_research::sat::Strategy::var_strategy</a></div><div class="ttdeci">DecisionStrategyProto::VariableSelectionStrategy var_strategy</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00032">cp_model_search.cc:32</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_strategy_html_a3af5431410dfaccc5ec8fdfb8f1d8e3e"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_strategy.html#a3af5431410dfaccc5ec8fdfb8f1d8e3e">operations_research::sat::Strategy::variables</a></div><div class="ttdeci">std::vector< IntegerVariable > variables</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00031">cp_model_search.cc:31</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_strategy_html_a3fb4ec4afb28873c4155e5a96f836d0f"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_strategy.html#a3fb4ec4afb28873c4155e5a96f836d0f">operations_research::sat::Strategy::domain_strategy</a></div><div class="ttdeci">DecisionStrategyProto::DomainReductionStrategy domain_strategy</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00033">cp_model_search.cc:33</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_var_value_html"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_var_value.html">operations_research::sat::VarValue</a></div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00037">cp_model_search.cc:37</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_var_value_html_a6b21ba2a964fe375e9ddbff5d8cabca8"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_var_value.html#a6b21ba2a964fe375e9ddbff5d8cabca8">operations_research::sat::VarValue::value</a></div><div class="ttdeci">IntegerValue value</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00039">cp_model_search.cc:39</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1sat_1_1_var_value_html_ab6516f556b715738034b30d290c40214"><div class="ttname"><a href="structoperations__research_1_1sat_1_1_var_value.html#ab6516f556b715738034b30d290c40214">operations_research::sat::VarValue::var</a></div><div class="ttdeci">IntegerVariable var</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__search_8cc_source.html#l00038">cp_model_search.cc:38</a></div></div>
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