Gurobi 5.0.1 (linux64) logging started Thu Nov 29 11:04:55 2012 Optimize a model with 23102 rows, 22801 columns and 136200 nonzeros Presolve removed 150 rows and 1 columns Presolve time: 0.32s Presolved: 22952 rows, 22800 columns, 135600 nonzeros Variable types: 150 continuous, 22650 integer (22650 binary) Found heuristic solution: objective 24805.000000 Root relaxation: objective 2.576789e+03, 861 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2576.78889 0 60 24805.0000 2576.78889 89.6% - 1s 0 0 2605.24979 0 86 24805.0000 2605.24979 89.5% - 1s 0 0 2607.06195 0 59 24805.0000 2607.06195 89.5% - 2s 0 0 2607.06195 0 34 24805.0000 2607.06195 89.5% - 3s H 0 0 2637.0000000 2607.06195 1.14% - 4s 0 0 2607.06195 0 53 2637.00000 2607.06195 1.14% - 4s 0 0 2607.06236 0 88 2637.00000 2607.06236 1.14% - 4s 0 0 2607.06236 0 70 2637.00000 2607.06236 1.14% - 4s 0 0 2607.06236 0 70 2637.00000 2607.06236 1.14% - 4s 0 0 2607.06236 0 29 2637.00000 2607.06236 1.14% - 4s H 0 0 2613.0000000 2607.06236 0.23% - 4s 0 0 2607.06236 0 22 2613.00000 2607.06236 0.23% - 4s 0 2 2607.28571 0 22 2613.00000 2607.28571 0.22% - 4s H 9 7 2611.0000000 2611.00000 0.0% 1.8 4s Cutting planes: Gomory: 5 Implied bound: 1 Clique: 2 Explored 9 nodes (5520 simplex iterations) in 4.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.611000000000e+03, best bound 2.611000000000e+03, gap 0.0%