Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:12:56 2013 Optimize a model with 696 rows, 256 columns and 2176 nonzeros Presolve removed 193 rows and 132 columns Presolve time: 0.00s Presolved: 503 rows, 124 columns, 1624 nonzeros Variable types: 9 continuous, 115 integer (115 binary) Found heuristic solution: objective 4149.0000000 Root relaxation: objective 2.918696e+03, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2918.69565 0 4 4149.00000 2918.69565 29.7% - 0s 0 0 2918.97346 0 11 4149.00000 2918.97346 29.6% - 0s H 0 0 2949.0000000 2918.97346 1.02% - 0s H 0 0 2933.0000000 2918.97346 0.48% - 0s 0 0 2919.74993 0 17 2933.00000 2919.74993 0.45% - 0s 0 0 2919.74993 0 4 2933.00000 2919.74993 0.45% - 0s 0 0 2919.74993 0 11 2933.00000 2919.74993 0.45% - 0s H 0 0 2927.0000000 2919.74993 0.25% - 0s 0 0 2919.74993 0 16 2927.00000 2919.74993 0.25% - 0s 0 0 2920.23364 0 19 2927.00000 2920.23364 0.23% - 0s 0 0 2921.23882 0 18 2927.00000 2921.23882 0.20% - 0s 0 0 2922.12071 0 19 2927.00000 2922.12071 0.17% - 0s 0 0 2922.57111 0 16 2927.00000 2922.57111 0.15% - 0s 0 0 2922.80013 0 18 2927.00000 2922.80013 0.14% - 0s 0 0 2923.07017 0 15 2927.00000 2923.07017 0.13% - 0s 0 0 2923.07729 0 18 2927.00000 2923.07729 0.13% - 0s 0 0 2923.07729 0 16 2927.00000 2923.07729 0.13% - 0s H 0 0 2925.0000000 2923.07729 0.07% - 0s 0 2 2923.83333 0 4 2925.00000 2923.83333 0.04% - 0s Cutting planes: MIR: 14 Explored 3 nodes (224 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.925000000000e+03, best bound 2.925000000000e+03, gap 0.0%