> > This may happen when infeasibility is detected by the mip preprocessor > > (not by the mip solver), which _erroneously_ does not change the mip > > solution status, so it remains undefined. In any case, if you see on the > > terminal something like follows: > > > > Preprocessing... > > PROBLEM HAS NO PRIMAL FEASIBLE SOLUTION > > > > it means that no integer feasible solution exists. > > > I'm using GLPK with the third party library pulp. Does it means that my > third party library should scan the stdout in addition to the solution > file in order to determine the true status of the solution? >
No way. This is a glpk bug; it will be fixed in a next release. _______________________________________________ Bug-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-glpk
