3RiverResearcher

Dear Riley,thanks for asking! Gurobi finds an incumbent solution in the Master Problem The Benders Subproblem is solved in the MIPSOL callback An optimality cut is generated because the theta estim...

Can I get any feedback on that request? I notice this problem especially on 2 instances. It seems that gurobi adds the cut and immediately forgets that this solution exists.

Btw, when I fix the solution to the first cut for the instances where Gurobi does not find any incumbent solution, then it “finds” the solution, but just after two cut loops. This seems a bit weird...

Dear Gurobi staff, I deleted my post, because I found the error.I thought I had some redundant dual multiplier, which I removed. This was indeed not redundant :DSo please ignore my requests. Have a...

Hi Ryuta,   thank you very much for your reply! I did not know about the return Value of cbUseSolution. Indeed, if I provide the partial solution I will get the improved objective, if it is the "fu...

I noticed one flaw in my approach: The models were run on two different threads, but not in a thread safe way. So I added one distinct gp.Env() to each thread. If I only set a partial solution of x...