Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:13:14 2012 Optimize a model with 4530 rows, 134 columns and 9060 nonzeros Presolve removed 3329 rows and 0 columns Presolve time: 0.16s Presolved: 1201 rows, 134 columns, 8655 nonzeros Variable types: 0 continuous, 134 integer (134 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.739188e+01, 542 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.39188 0 128 8.00000 17.39188 117% - 0s 0 0 16.85710 0 134 8.00000 16.85710 111% - 0s 0 0 16.66633 0 133 8.00000 16.66633 108% - 0s 0 0 16.61689 0 133 8.00000 16.61689 108% - 0s 0 0 16.57978 0 133 8.00000 16.57978 107% - 0s 0 0 16.56485 0 132 8.00000 16.56485 107% - 1s H 0 0 9.0000000 16.56485 84.1% - 1s 0 0 16.54713 0 133 9.00000 16.54713 83.9% - 1s 0 0 16.54387 0 133 9.00000 16.54387 83.8% - 1s 0 0 16.54130 0 133 9.00000 16.54130 83.8% - 1s 0 0 16.53723 0 132 9.00000 16.53723 83.7% - 1s 0 0 16.53151 0 134 9.00000 16.53151 83.7% - 2s 0 0 16.53124 0 134 9.00000 16.53124 83.7% - 2s 0 0 16.52900 0 133 9.00000 16.52900 83.7% - 2s 0 0 16.52816 0 134 9.00000 16.52816 83.6% - 2s 0 0 16.51447 0 134 9.00000 16.51447 83.5% - 2s 0 0 16.49893 0 134 9.00000 16.49893 83.3% - 2s 0 0 16.49638 0 134 9.00000 16.49638 83.3% - 3s 0 0 16.49274 0 133 9.00000 16.49274 83.3% - 3s 0 0 16.49202 0 134 9.00000 16.49202 83.2% - 3s 0 0 16.49056 0 134 9.00000 16.49056 83.2% - 3s 0 2 16.48745 0 134 9.00000 16.48745 83.2% - 4s 134 102 12.23772 7 65 9.00000 15.96901 77.4% 80.2 5s H 437 157 10.0000000 13.99435 39.9% 66.4 6s Cutting planes: Clique: 181 Explored 763 nodes (47147 simplex iterations) in 8.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%