I am trying to solve an IP with Gurobi. The model was reaching the optimal solution with smaller instances however once I increase the problem size, the solver gets stuck in Presolve. It reaches a certain point beyond which it seems to stop. It doesn't move on to root simplex or proceed with presolve.
I tried changing the parameters:
but still the same problem occurs.
I also tried to set Presolve to 0 however the problem then gets stuck in root simplex, where it also never ends. I looked through some of the posted questions (someone mentioned cycling although I am not sure if this is the case here and if so how to solve it).
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