search

coin-or / Cbc.old

This is a mirror of the subversion repository on COIN-OR
https://projects.coin-or.org/Cbc
Other
88 stars 30 forks source link

[Trac #132] Problem with Cbc and DiveLineSearch Heuristic #73

Open s-c-e opened 5 years ago

s-c-e commented 5 years ago

image

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