Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:10:11 2013 Optimize a model with 145320 rows, 144120 columns and 576120 nonzeros Presolve removed 7397 rows and 0 columns Presolve time: 1.23s Presolved: 137923 rows, 144120 columns, 561326 nonzeros Variable types: 144000 continuous, 120 integer (120 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20024 1.2650513e+05 5.605054e+04 0.000000e+00 5s 31471 1.8507657e+05 1.556176e+04 0.000000e+00 10s 38725 1.9509628e+05 0.000000e+00 0.000000e+00 14s Root relaxation: objective 1.950963e+05, 38725 iterations, 14.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195096.279 0 3 - 195096.279 - - 15s H 0 0 197381.00000 195096.279 1.16% - 16s 0 0 195097.149 0 4 197381.000 195097.149 1.16% - 17s 0 0 195097.149 0 3 197381.000 195097.149 1.16% - 39s 0 0 195097.149 0 4 197381.000 195097.149 1.16% - 40s 0 0 195097.149 0 4 197381.000 195097.149 1.16% - 41s 0 2 195099.503 0 4 197381.000 195099.503 1.16% - 48s 2 5 195265.899 1 3 197381.000 195210.377 1.10% 662 50s H 4 4 196344.65004 195216.071 0.57% 396 51s H 8 6 195399.66667 195302.625 0.05% 360 52s H 9 3 195376.00000 195302.625 0.04% 324 53s H 11 3 195370.60000 195302.625 0.03% 266 53s * 12 2 10 195342.00000 195302.625 0.02% 259 53s Cutting planes: Gomory: 1 Flow cover: 3 Explored 15 nodes (62541 simplex iterations) in 53.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.953420000000e+05, best bound 1.953420000000e+05, gap 0.0%