Input generation Instance generation Optimization Welcome to the CBC MILP Solver Version: devel Build Date: Nov 15 2020 Starting solution of the Linear programming relaxation problem using Primal Simplex Coin0506I Presolve 90001 (-299) rows, 178802 (-299) columns and 536107 (-598) elements Clp0030I 13 infeas 3936.1919, obj 0.73453941 - mu 111.08889, its 52, 82471 interior Clp0030I 23 infeas 336.48