I have implemented a Bender's decomposition for a constrained network flow but the LP solver (Gurobi) warns me of the ill-conditioning of the slave dual LP. As you can see below, the coefficients seem well behaved but I still get warnings like the one highlighted. I have already tried different values for classic parameters like NumericFocus and MarkowitzTol but without success. One such LP that displays this problem can be found here.
Matrix range [3e-01, 9e+02] Objective range [1e-02, 9e+02] Bounds range [0e+00, 0e+00] RHS range [1e+01, 2e+02]
Warning: very big Kappa = 2.97774e+13, try parameter NumericFocus