> So, depending on the random seeds, your instance can be solved in 79 or > 1816 sec.s (!!) >
Looks like a black magic. I encountered this when developed a mip preprocessing. At some moment it was absolutely unclear to me to which form the original instance should be transformed. _______________________________________________ Help-glpk mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-glpk
