[Cbc-tickets] [COIN-OR Branch-and-Cut MIP Solver] #133: Problem with Cbc and PseudoCost Heuristic
COIN-OR Branch-and-Cut MIP Solver
coin-trac at coin-or.org
Thu Aug 8 03:21:16 EDT 2013
#133: Problem with Cbc and PseudoCost Heuristic
--------------------+-----------------
Reporter: ycollet | Owner: tkr
Type: defect | Status: new
Priority: major | Component: Cbc
Version: 2.7 | Keywords:
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Hello,
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 PseudoCost heuristic like this:
CbcHeuristicDivePseudoCost HeuristicDivePseudoCost;
HeuristicDivePseudoCost.setModel(pModel_l);
mcCbcModel->addHeuristic(&HeuristicDivePseudoCost);
Then, I started the resolution using the Osi layer of CBC.
Here is the gdb log:
#0 0x000000000129002c in
CbcHeuristicDivePseudoCost::selectVariableToBranch (this=0x1c8bd20,
solver=0x1cb3b38, newSolution=0x1cb3560, bestColumn=@0x7fffffff9d6c: -1,
bestRound=@0x7fffffff9d70: -1) at /home/crystal/rmdev
/MoteurRiskManager-
cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcHeuristicDivePseudoCost.cpp:90
#1 0x0000000001289d6e in CbcHeuristicDive::solution (this=0x1c8bd20,
solutionValue=@0x7fffffffa0b0: 1.0000000000000001e+50,
numberNodes=@0x7fffffffa020: -1,
numberCuts=@0x7fffffffa01c: 0, cuts=0x0, nodes=@0x7fffffffa030: 0x0,
newSolution=0x1cb3560)
at /home/crystal/rmdev/MoteurRiskManager-
cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcHeuristicDive.cpp:314
#2 0x000000000128c277 in CbcHeuristicDive::solution (this=0x1c8bd20,
solutionValue=@0x7fffffffa0b0: 1.0000000000000001e+50,
betterSolution=0x1cb3230)
at /home/crystal/rmdev/MoteurRiskManager-
cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/CbcHeuristicDive.cpp:902
#3 0x000000000131f576 in CbcModel::doHeuristicsAtRoot (this=0x1bb0be0,
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=0x1bb0be0,
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=0x1ba2220)
at /home/crystal/rmdev/MoteurRiskManager-
cmake/build_tmp/Dependencies/Cbc/src/EP_Cbc/Cbc/src/OsiCbc/OsiCbcSolverInterface.cpp:787
Best regards,
YC
--
Ticket URL: <https://projects.coin-or.org/Cbc/ticket/133>
COIN-OR Branch-and-Cut MIP Solver <http://projects.coin-or.org/Cbc>
An LP-based branch-and-cut MIP solver.
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