Dear GAMS-users,

I’m trying to solve a MIP-model using CPLEX, however somehow the model becomes very slow (see attachment).

What I don’t understand is why it keeps saying “GAP 0%” while not returning an optimal solution. Does anyone have a clue why the model could be slow?

I set the following options:

OPTION OPTCA=0;

OPTION OPTCR=0;

and in the CPLEX option-file:

numericalemphasis=1

scaind=1

relaxfixedinfeas=1

mipdisplay=2

Regards,

GFA