Gurobi 5.0.1 (linux64) logging started Wed Apr 24 05:09:16 2013 Optimize a model with 76647 rows, 75777 columns and 302847 nonzeros Presolve removed 4584 rows and 0 columns Presolve time: 0.52s Presolved: 72063 rows, 75777 columns, 293679 nonzeros Variable types: 75690 continuous, 87 integer (87 binary) Root relaxation: objective 1.127881e+05, 17265 iterations, 3.87 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 112788.136 0 2 - 112788.136 - - 4s H 0 0 114014.00000 112788.136 1.08% - 4s H 0 0 113098.00000 112788.136 0.27% - 5s 0 0 112789.989 0 4 113098.000 112789.989 0.27% - 5s 0 0 112789.989 0 2 113098.000 112789.989 0.27% - 8s 0 0 112789.989 0 4 113098.000 112789.989 0.27% - 8s 0 0 112790.097 0 2 113098.000 112790.097 0.27% - 8s 0 0 112790.194 0 4 113098.000 112790.194 0.27% - 8s 0 0 112790.320 0 4 113098.000 112790.320 0.27% - 9s 0 0 112790.587 0 3 113098.000 112790.587 0.27% - 9s 0 2 112790.640 0 3 113098.000 112790.640 0.27% - 10s * 21 2 5 113078.00000 113065.429 0.01% 84.3 12s Cutting planes: Gomory: 1 Flow cover: 8 Explored 24 nodes (25664 simplex iterations) in 12.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.130780000000e+05, best bound 1.130780000000e+05, gap 0.0%