Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:09:31 2013 Optimize a model with 76647 rows, 75777 columns and 302847 nonzeros Presolve removed 4232 rows and 0 columns Presolve time: 0.52s Presolved: 72415 rows, 75777 columns, 294383 nonzeros Variable types: 75690 continuous, 87 integer (87 binary) Root relaxation: objective 1.136380e+05, 18741 iterations, 4.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 113638.028 0 3 - 113638.028 - - 4s H 0 0 115442.00000 113638.028 1.56% - 5s H 0 0 113828.00000 113638.028 0.17% - 5s 0 0 113641.197 0 4 113828.000 113641.197 0.16% - 6s 0 0 113641.197 0 3 113828.000 113641.197 0.16% - 8s 0 0 113641.219 0 5 113828.000 113641.219 0.16% - 9s 0 0 113641.219 0 5 113828.000 113641.219 0.16% - 9s 0 2 113673.218 0 5 113828.000 113673.218 0.14% - 11s Cutting planes: Gomory: 3 Flow cover: 4 Explored 9 nodes (25857 simplex iterations) in 12.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.138280000000e+05, best bound 1.138280000000e+05, gap 0.0%