Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:25 2012 Optimize a model with 155 rows, 132 columns and 517 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 155 rows, 131 columns, 516 nonzeros Variable types: 0 continuous, 131 integer (130 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 82 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 53 28.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.55746 0 54 24.00000 0.55746 97.7% - 0s H 0 0 23.0000000 0.55746 97.6% - 0s 0 0 1.02273 0 55 23.00000 1.02273 95.6% - 0s H 0 0 22.0000000 1.02273 95.4% - 0s H 0 0 17.0000000 1.02273 94.0% - 0s H 0 0 15.0000000 1.02273 93.2% - 0s 0 0 1.02814 0 56 15.00000 1.02814 93.1% - 0s 0 0 1.02814 0 56 15.00000 1.02814 93.1% - 0s H 0 0 13.0000000 1.02814 92.1% - 0s 0 2 1.03147 0 56 13.00000 1.03147 92.1% - 0s * 16 15 11 12.0000000 3.49964 70.8% 30.6 0s * 35 22 11 11.0000000 3.57633 67.5% 23.3 0s * 62 24 9 9.0000000 4.06984 54.8% 19.4 0s Cutting planes: Gomory: 2 Zero half: 1 Mod-K: 1 Explored 133 nodes (2771 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%