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276 lines
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<div class="headertitle"><div class="title">gscip_solver.h</div></div>
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<a href="gscip__solver_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright 2010-2021 Google LLC</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">// you may not use this file except in compliance with the License.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// limitations under the License.</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#ifndef OR_TOOLS_MATH_OPT_SOLVERS_GSCIP_SOLVER_H_</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#define OR_TOOLS_MATH_OPT_SOLVERS_GSCIP_SOLVER_H_</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <memory></span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <string></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> </div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include "absl/container/flat_hash_map.h"</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include "absl/container/flat_hash_set.h"</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "absl/status/status.h"</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "absl/status/statusor.h"</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include "absl/types/span.h"</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include "<a class="code" href="gscip_8h.html">ortools/gscip/gscip.h</a>"</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include "ortools/gscip/gscip.pb.h"</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include "<a class="code" href="gscip__event__handler_8h.html">ortools/gscip/gscip_event_handler.h</a>"</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include "ortools/math_opt/callback.pb.h"</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include "<a class="code" href="inverted__bounds_8h.html">ortools/math_opt/core/inverted_bounds.h</a>"</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#include "<a class="code" href="solve__interrupter_8h.html">ortools/math_opt/core/solve_interrupter.h</a>"</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#include "<a class="code" href="solver__interface_8h.html">ortools/math_opt/core/solver_interface.h</a>"</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#include "ortools/math_opt/model.pb.h"</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#include "ortools/math_opt/model_parameters.pb.h"</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#include "ortools/math_opt/model_update.pb.h"</span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="preprocessor">#include "ortools/math_opt/parameters.pb.h"</span></div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="preprocessor">#include "ortools/math_opt/result.pb.h"</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="preprocessor">#include "ortools/math_opt/sparse_containers.pb.h"</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor">#include "scip/type_cons.h"</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="preprocessor">#include "scip/type_var.h"</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research_1_1math__opt.html">math_opt</a> {</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"><a class="line" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html"> 45</a></span><span class="keyword">class </span><a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html">GScipSolver</a> : <span class="keyword">public</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solver_interface.html">SolverInterface</a> {</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">static</span> absl::StatusOr<std::unique_ptr<SolverInterface>> <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a61ac0bc6afed786de631c4a91faeb866">New</a>(</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <span class="keyword">const</span> ModelProto& <a class="code hl_variable" href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a>, <span class="keyword">const</span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_solver_interface_1_1_init_args.html">InitArgs</a>& init_args);</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> absl::StatusOr<SolveResultProto> <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a7875bc8ab28e1cf6cefc688d7b70ac7e">Solve</a>(</div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">const</span> SolveParametersProto& <a class="code hl_variable" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>,</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters,</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <a class="code hl_typedef" href="classoperations__research_1_1math__opt_1_1_solver_interface.html#aad3360b1947c772bebf3d3cfb2105a15">MessageCallback</a> message_cb,</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">const</span> CallbackRegistrationProto& callback_registration, <a class="code hl_typedef" href="classoperations__research_1_1math__opt_1_1_solver_interface.html#ab47a61ca53ae9cdf35dd4f2dfc9ecadb">Callback</a> cb,</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">SolveInterrupter</a>* interrupter) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> absl::Status <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a4dc835d3171da48778de1bbea39f8448">Update</a>(<span class="keyword">const</span> ModelUpdateProto& model_update) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a1dcbb1374e91747a2db097361b091c8b">CanUpdate</a>(<span class="keyword">const</span> ModelUpdateProto& model_update) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> </div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="comment">// Returns the merged parameters and a list of warnings for unsupported</span></div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="comment">// parameters.</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">static</span> absl::StatusOr<GScipParameters> <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a97470e4fa956b2722e897e7199fb00f3">MergeParameters</a>(</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">const</span> SolveParametersProto& solve_parameters);</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="comment">// Event handler that it used to call SCIPinterruptSolve() is a safe manner.</span></div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="comment">// At the start of SCIPsolve(), SCIP resets `userinterrupt` to false. It does</span></div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// the same in SCIPpresolve(), which is called at the beginning of SCIPsolve()</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="comment">// but also at the beginning of each restart. the `userinterrupt` can also be</span></div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="comment">// reset when the transformed problem is freed when the parameter</span></div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// "misc/resetstat" is used. On top of that, it is not possible to call</span></div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="comment">// SCIPinterruptSolve() in SCIP_STAGE_INITSOLVE stage; which occurs in the</span></div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="comment">// middle of the solve and at restarts.</span></div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// If this was no enough, SCIPinterruptSolve() calls SCIPcheckStage() which is</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="comment">// not thread-safe.</span></div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// As a consequence, although it is possible to call SCIPinterruptSolve() from</span></div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="comment">// another thread, it is unreliable at best. Here we take a safer approach: we</span></div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// call it only from the Exec() of an even handler. This solves all thread</span></div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// safety issues and, if we have been careful, also ensures we don't call it</span></div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// in the wrong stage. This also solves the issue the multiple resets of the</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="comment">// `userinterrupt` flag since each time we are called after the interrupter</span></div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <span class="comment">// has been triggered, we simply call SCIPinterruptSolve() until SCIP finally</span></div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> <span class="comment">// listens.</span></div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <span class="keyword">struct </span>InterruptEventHandler : <span class="keyword">public</span> <a class="code hl_class" href="classoperations__research_1_1_g_scip_event_handler.html">GScipEventHandler</a> {</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> InterruptEventHandler();</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> SCIP_RETCODE Init(<a class="code hl_class" href="classoperations__research_1_1_g_scip.html">GScip</a>* gscip) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> SCIP_RETCODE Execute(<a class="code hl_class" href="classoperations__research_1_1_g_scip_event_handler_context.html">GScipEventHandlerContext</a>) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> </div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="comment">// Calls SCIPinterruptSolve() if the interrupter is set and triggered and</span></div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="comment">// SCIP is in a valid stage for that.</span></div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> SCIP_RETCODE TryCallInterruptIfNeeded(<a class="code hl_class" href="classoperations__research_1_1_g_scip.html">GScip</a>* gscip);</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <span class="comment">// This will be set before SCIPsolve() is called and reset after the end of</span></div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="comment">// the call. It may be null when the user does not provide an interrupter;</span></div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="comment">// in that case we don't register any event.</span></div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">SolveInterrupter</a>* interrupter = <span class="keyword">nullptr</span>;</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> };</div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> </div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="keyword">explicit</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html">GScipSolver</a>(std::unique_ptr<GScip> gscip);</div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// Adds the new variables.</span></div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> absl::Status AddVariables(<span class="keyword">const</span> VariablesProto& variables,</div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keyword">const</span> absl::flat_hash_map<int64_t, double>&</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> linear_objective_coefficients);</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> </div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <span class="comment">// Update existing variables' parameters.</span></div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> absl::Status UpdateVariables(<span class="keyword">const</span> VariableUpdatesProto& variable_updates);</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="comment">// Adds the new linear constraints.</span></div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> absl::Status AddLinearConstraints(</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keyword">const</span> LinearConstraintsProto& linear_constraints,</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">const</span> SparseDoubleMatrixProto& linear_constraint_matrix);</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> </div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="comment">// Updates the existing constraints and the coefficients of the existing</span></div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="comment">// variables of these constraints.</span></div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> absl::Status UpdateLinearConstraints(</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keyword">const</span> LinearConstraintUpdatesProto linear_constraint_updates,</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> <span class="keyword">const</span> SparseDoubleMatrixProto& linear_constraint_matrix,</div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> std::optional<int64_t> first_new_var_id,</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> std::optional<int64_t> first_new_cstr_id);</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> </div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> absl::flat_hash_set<SCIP_VAR*> LookupAllVariables(</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> absl::Span<const int64_t> <a class="code hl_variable" href="gscip__solver_8cc.html#a461bf2761c1dc652a0671e5e135b763a">variable_ids</a>);</div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> absl::StatusOr<SolveResultProto> CreateSolveResultProto(</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <a class="code hl_struct" href="structoperations__research_1_1_g_scip_result.html">GScipResult</a> gscip_result,</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters,</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> std::optional<double> cutoff);</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="comment">// Returns the ids of variables and linear constraints with inverted bounds.</span></div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_inverted_bounds.html">InvertedBounds</a> ListInvertedBounds() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> </div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keyword">const</span> std::unique_ptr<GScip> gscip_;</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> InterruptEventHandler interrupt_event_handler_;</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> absl::flat_hash_map<int64_t, SCIP_VAR*> variables_;</div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> absl::flat_hash_map<int64_t, SCIP_CONS*> linear_constraints_;</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span>};</div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> </div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span>} <span class="comment">// namespace math_opt</span></div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span>} <span class="comment">// namespace operations_research</span></div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> </div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span><span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_MATH_OPT_SOLVERS_GSCIP_SOLVER_H_</span></div>
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<div class="ttc" id="aclassoperations__research_1_1_g_scip_event_handler_context_html"><div class="ttname"><a href="classoperations__research_1_1_g_scip_event_handler_context.html">operations_research::GScipEventHandlerContext</a></div><div class="ttdef"><b>Definition:</b> <a href="gscip__event__handler_8h_source.html#l00044">gscip_event_handler.h:44</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_g_scip_event_handler_html"><div class="ttname"><a href="classoperations__research_1_1_g_scip_event_handler.html">operations_research::GScipEventHandler</a></div><div class="ttdef"><b>Definition:</b> <a href="gscip__event__handler_8h_source.html#l00090">gscip_event_handler.h:90</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_g_scip_html"><div class="ttname"><a href="classoperations__research_1_1_g_scip.html">operations_research::GScip</a></div><div class="ttdef"><b>Definition:</b> <a href="gscip_8h_source.html#l00127">gscip.h:127</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_g_scip_solver_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html">operations_research::math_opt::GScipSolver</a></div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8h_source.html#l00045">gscip_solver.h:45</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_g_scip_solver_html_a1dcbb1374e91747a2db097361b091c8b"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a1dcbb1374e91747a2db097361b091c8b">operations_research::math_opt::GScipSolver::CanUpdate</a></div><div class="ttdeci">bool CanUpdate(const ModelUpdateProto &model_update) override</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00904">gscip_solver.cc:904</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_g_scip_solver_html_a4dc835d3171da48778de1bbea39f8448"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a4dc835d3171da48778de1bbea39f8448">operations_research::math_opt::GScipSolver::Update</a></div><div class="ttdeci">absl::Status Update(const ModelUpdateProto &model_update) override</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00915">gscip_solver.cc:915</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_g_scip_solver_html_a61ac0bc6afed786de631c4a91faeb866"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a61ac0bc6afed786de631c4a91faeb866">operations_research::math_opt::GScipSolver::New</a></div><div class="ttdeci">static absl::StatusOr< std::unique_ptr< SolverInterface > > New(const ModelProto &model, const InitArgs &init_args)</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00777">gscip_solver.cc:777</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_g_scip_solver_html_a7875bc8ab28e1cf6cefc688d7b70ac7e"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a7875bc8ab28e1cf6cefc688d7b70ac7e">operations_research::math_opt::GScipSolver::Solve</a></div><div class="ttdeci">absl::StatusOr< SolveResultProto > Solve(const SolveParametersProto &parameters, const ModelSolveParametersProto &model_parameters, MessageCallback message_cb, const CallbackRegistrationProto &callback_registration, Callback cb, SolveInterrupter *interrupter) override</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00801">gscip_solver.cc:801</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_g_scip_solver_html_a97470e4fa956b2722e897e7199fb00f3"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_g_scip_solver.html#a97470e4fa956b2722e897e7199fb00f3">operations_research::math_opt::GScipSolver::MergeParameters</a></div><div class="ttdeci">static absl::StatusOr< GScipParameters > MergeParameters(const SolveParametersProto &solve_parameters)</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00413">gscip_solver.cc:413</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solve_interrupter_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">operations_research::math_opt::SolveInterrupter</a></div><div class="ttdef"><b>Definition:</b> <a href="solve__interrupter_8h_source.html#l00039">solve_interrupter.h:39</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solver_interface_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solver_interface.html">operations_research::math_opt::SolverInterface</a></div><div class="ttdef"><b>Definition:</b> <a href="solver__interface_8h_source.html#l00059">solver_interface.h:59</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solver_interface_html_aad3360b1947c772bebf3d3cfb2105a15"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solver_interface.html#aad3360b1947c772bebf3d3cfb2105a15">operations_research::math_opt::SolverInterface::MessageCallback</a></div><div class="ttdeci">std::function< void(const std::vector< std::string > &)> MessageCallback</div><div class="ttdef"><b>Definition:</b> <a href="solver__interface_8h_source.html#l00075">solver_interface.h:75</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solver_interface_html_ab47a61ca53ae9cdf35dd4f2dfc9ecadb"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solver_interface.html#ab47a61ca53ae9cdf35dd4f2dfc9ecadb">operations_research::math_opt::SolverInterface::Callback</a></div><div class="ttdeci">std::function< absl::StatusOr< CallbackResultProto >(const CallbackDataProto &)> Callback</div><div class="ttdef"><b>Definition:</b> <a href="solver__interface_8h_source.html#l00083">solver_interface.h:84</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#l00119">cp_model_fz_solver.cc:119</a></div></div>
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<div class="ttc" id="agscip_8h_html"><div class="ttname"><a href="gscip_8h.html">gscip.h</a></div></div>
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<div class="ttc" id="agscip__event__handler_8h_html"><div class="ttname"><a href="gscip__event__handler_8h.html">gscip_event_handler.h</a></div></div>
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<div class="ttc" id="agscip__solver_8cc_html_a461bf2761c1dc652a0671e5e135b763a"><div class="ttname"><a href="gscip__solver_8cc.html#a461bf2761c1dc652a0671e5e135b763a">variable_ids</a></div><div class="ttdeci">absl::Span< const int64_t > variable_ids</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00139">gscip_solver.cc:139</a></div></div>
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<div class="ttc" id="agurobi__interface_8cc_html_a0728f23c9a47655d38e0bf1a2f200bcf"><div class="ttname"><a href="gurobi__interface_8cc.html#a0728f23c9a47655d38e0bf1a2f200bcf">model</a></div><div class="ttdeci">GRBmodel * model</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__interface_8cc_source.html#l00274">gurobi_interface.cc:274</a></div></div>
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<div class="ttc" id="ainverted__bounds_8h_html"><div class="ttname"><a href="inverted__bounds_8h.html">inverted_bounds.h</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html">operations_research::math_opt</a></div><div class="ttdef"><b>Definition:</b> <a href="arrow__operator__proxy_8h_source.html#l00020">arrow_operator_proxy.h:20</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_html"><div class="ttname"><a href="namespaceoperations__research.html">operations_research</a></div><div class="ttdoc">Collection of objects used to extend the Constraint Solver library.</div><div class="ttdef"><b>Definition:</b> <a href="dense__doubly__linked__list_8h_source.html#l00021">dense_doubly_linked_list.h:21</a></div></div>
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<div class="ttc" id="asolve__interrupter_8h_html"><div class="ttname"><a href="solve__interrupter_8h.html">solve_interrupter.h</a></div></div>
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<div class="ttc" id="asolver__interface_8h_html"><div class="ttname"><a href="solver__interface_8h.html">solver_interface.h</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1_g_scip_result_html"><div class="ttname"><a href="structoperations__research_1_1_g_scip_result.html">operations_research::GScipResult</a></div><div class="ttdef"><b>Definition:</b> <a href="gscip_8h_source.html#l00078">gscip.h:78</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_inverted_bounds_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_inverted_bounds.html">operations_research::math_opt::InvertedBounds</a></div><div class="ttdef"><b>Definition:</b> <a href="inverted__bounds_8h_source.html#l00032">inverted_bounds.h:32</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1math__opt_1_1_solver_interface_1_1_init_args_html"><div class="ttname"><a href="structoperations__research_1_1math__opt_1_1_solver_interface_1_1_init_args.html">operations_research::math_opt::SolverInterface::InitArgs</a></div><div class="ttdef"><b>Definition:</b> <a href="solver__interface_8h_source.html#l00062">solver_interface.h:62</a></div></div>
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