Hi, I have exactly the same problem. I am using API and I do not set any time limit. If I add a break point after glp_simplex(lp, NULL); I can see OPTIMAL SOLUTION FOUND in the command line window. However, the output file shows "Status: INTEGER UNDEFINED" and everything takes 0. What should I do?
Thanks a lot. Andrew Makhorin wrote: > >> I am trying to solve a problem with GLPK 4. 36. As I run it with >> GPLSol with timeout of 900 seconds, it prints out the line "OPTIMAL >> SOLUTION FOUND" after some time in the log file and then "Integer >> Optimization Begins" > > The message "OPTIMAL SOLUTION FOUND" means that the solver found an > optimal solution to LP relaxation, not to MIP. > >> After time out when the output file is generated. It shows >> "Status: INTEGER UNDEFINED" > >> What is the meaning of this ? > > This means that the solver did not find any integer feasible solution > for 900 secs. > >> Should I consider that it is able to solve my prolbem ? > > Try to increase the time limit. > > > > _______________________________________________ > Help-glpk mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/help-glpk > > -- View this message in context: http://www.nabble.com/Re%3A-Status-%3A-Integer-Undefined-%3A-what-does-it-mean.-tp21991580p22809698.html Sent from the Gnu - GLPK - Help mailing list archive at Nabble.com. _______________________________________________ Help-glpk mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-glpk
