CPLEX 20.1.0.0: presolve=0 mipdisplay=2 iisfind=1 timelimit=3600 cutpass = -1 Clique table members: 1562. MIP emphasis: balance optimality and feasibility. MIP search method: dynamic search. Parallel mode: deterministic, using up to 8 threads. Root relaxation solution time = 169.80 sec. (135866.75 ticks) Nodes Cuts/ Node Left Objective IInf Best Integer Best Bound ItCnt Gap 0 0 infeasible 315936 Root node processing (before b&c): Real time = 169.84 sec. (135885.48 ticks) Parallel b&c, 8 threads: Real time = 0.00 sec. (0.00 ticks) Sync time (average) = 0.00 sec. Wait time (average) = 0.00 sec. ------------ Total (root+branch&cut) = 169.84 sec. (135885.48 ticks) Problem is feasible; no conflict available. CPLEX 20.1.0.0: integer infeasible. 315936 MIP simplex iterations 0 branch-and-bound nodes Surprise values mc = 0, nc = 0 from CPXrefineconflict. Return 1719 from CPXgetconflict. No basis.