Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:54:23 2012 Optimize a model with 3188 rows, 114 columns and 6376 nonzeros Presolve removed 2259 rows and 0 columns Presolve time: 0.09s Presolved: 929 rows, 114 columns, 6226 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.586561e+01, 441 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.86561 0 110 7.00000 15.86561 127% - 0s 0 0 15.36399 0 113 7.00000 15.36399 119% - 0s H 0 0 8.0000000 15.36399 92.0% - 0s 0 0 15.21910 0 109 8.00000 15.21910 90.2% - 0s 0 0 15.18496 0 111 8.00000 15.18496 89.8% - 0s H 0 0 9.0000000 15.18496 68.7% - 0s 0 0 15.10392 0 113 9.00000 15.10392 67.8% - 0s 0 0 15.08433 0 113 9.00000 15.08433 67.6% - 0s 0 0 15.04974 0 114 9.00000 15.04974 67.2% - 1s 0 0 15.04124 0 114 9.00000 15.04124 67.1% - 1s 0 0 15.03979 0 114 9.00000 15.03979 67.1% - 1s 0 0 15.03824 0 114 9.00000 15.03824 67.1% - 1s 0 0 15.03817 0 114 9.00000 15.03817 67.1% - 1s 0 2 15.03720 0 114 9.00000 15.03720 67.1% - 1s Cutting planes: Clique: 110 Explored 506 nodes (28750 simplex iterations) in 3.49 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%