[Cbc-tickets] [COIN-OR Branch-and-Cut MIP Solver] #132: Problem with Cbc and DiveLineSearch Heuristic

[COIN-OR Branch-and-Cut MIP Solver]

#132: Problem with Cbc and DiveLineSearch Heuristic
--------------------+-----------------
Reporter:  ycollet  |      Owner:  tkr
    Type:  defect   |     Status:  new
Priority:  major    |  Component:  Cbc
 Version:  2.7      |   Keywords:
--------------------+-----------------
 Hello,

 I met a problem with the divelinesearch heuristic.
 I  use the last version of CBC (2.8.3). The problem has been met under
 windows 32 + 64 and linux 64.

 I added the heuristic like this:

 CbcHeuristicDiveLineSearch HeuristicDiveLineSearch;

 HeuristicDiveLineSearch.setModel(pModel_l);
 myCbcModel->addHeuristic(&HeuristicDiveLineSearch);

 Here is the gdb log:

 #0  0x000000000128f9ba in
 CbcHeuristicDiveLineSearch::selectVariableToBranch (this=0x1c929e0,
 solver=0x1cb3a28, newSolution=0x1cb3450, bestColumn=@0x7fffffff9d6c: -1,
     bestRound=@0x7fffffff9d70: -1) at /home/crystal/rmdev
 /MoteurRiskManager-
 cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcHeuristicDiveLineSearch.cpp:85
 #1  0x0000000001289d6e in CbcHeuristicDive::solution (this=0x1c929e0,
 solutionValue=@0x7fffffffa0b0: 1.0000000000000001e+50,
 numberNodes=@0x7fffffffa020: -1,
     numberCuts=@0x7fffffffa01c: 0, cuts=0x0, nodes=@0x7fffffffa030: 0x0,
 newSolution=0x1cb3450)
     at /home/crystal/rmdev/MoteurRiskManager-
 cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcHeuristicDive.cpp:314
 #2  0x000000000128c277 in CbcHeuristicDive::solution (this=0x1c929e0,
 solutionValue=@0x7fffffffa0b0: 1.0000000000000001e+50,
 betterSolution=0x1cb3120)
     at /home/crystal/rmdev/MoteurRiskManager-
 cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcHeuristicDive.cpp:902
 #3  0x000000000131f576 in CbcModel::doHeuristicsAtRoot (this=0x1aa93e0,
 deleteHeuristicsAfterwards=0)
     at /home/crystal/rmdev/MoteurRiskManager-
 cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcModel.cpp:14322
 #4  0x00000000012ef99f in CbcModel::branchAndBound (this=0x1aa93e0,
 doStatistics=0)
     at /home/crystal/rmdev/MoteurRiskManager-
 cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcModel.cpp:2617
 #5  0x0000000001276799 in OsiCbcSolverInterface::branchAndBound
 (this=0x1a9d400)

 Best regards,

 YC

-- 
Ticket URL: <https://projects.coin-or.org/Cbc/ticket/132>
COIN-OR Branch-and-Cut MIP Solver <http://projects.coin-or.org/Cbc>
An LP-based branch-and-cut MIP solver.