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Fix for detecting infeasible models in glpk.

tempestpy_adaptions
Tim Quatmann 5 years ago
parent
293fec426e
commit
c977a1f5fa
1 changed files with 2 additions and 1 deletions
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  1. 3
      src/storm/solver/GlpkLpSolver.cpp

3
src/storm/solver/GlpkLpSolver.cpp
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@ -261,6 +261,7 @@ namespace storm {
// Invoke mip solving // Invoke mip solving
error = glp_intopt(this->lp, parameters); error = glp_intopt(this->lp, parameters);
int status = glp_mip_status(this->lp);
delete parameters; delete parameters;
// mipgap.first has been set to the achieved mipgap (either within the callback function or because it has been set to this->maxMILPGap) // mipgap.first has been set to the achieved mipgap (either within the callback function or because it has been set to this->maxMILPGap)
@ -268,7 +269,7 @@ namespace storm {
// In case the error is caused by an infeasible problem, we do not want to view this as an error and // In case the error is caused by an infeasible problem, we do not want to view this as an error and
// reset the error code. // reset the error code.
if (error == GLP_ENOPFS) {
if (error == GLP_ENOPFS || status == GLP_NOFEAS) {
this->isInfeasibleFlag = true; this->isInfeasibleFlag = true;
error = 0; error = 0;
} else if (error == GLP_ENODFS) { } else if (error == GLP_ENODFS) {

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