Why does a infeasible problem show that the program status is optimal ?

Question

I found there is a strange phenomenon that the progress window shows a infeasible problem with optimal status, just like this:

So, I want to know the program is infeasible or not and the reason caused this. Besides, the program window shows the best solution is na but I found the objective value in math inspector is non-null.

Marcel Hunting · Answer

Hi ​@denghaiying. To check whether the model is infeasible you can use the MarketDA_MP.ProgramStatus suffix.It seems you are doing sensitivity calculations; the propertyRightHandSideRange must be active for some of the constraints. Is also the propertyShadowPriceRange active for some of the constraints, or the propertyValueRange for some of the variables?The progress window looks strange but this might have been fixed in newer AIMMS versions. It seems you are using an old AIMMS version because the CPLEX version (12.6) is old.

Reply

Sign up

Login to the community

Scanning file for viruses.

This file cannot be downloaded