Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:56:52 2012 Optimize a model with 3517 rows, 118 columns and 7034 nonzeros Presolve removed 2485 rows and 0 columns Presolve time: 0.11s Presolved: 1032 rows, 118 columns, 7162 nonzeros Variable types: 0 continuous, 118 integer (118 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.544176e+01, 572 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.44176 0 115 7.00000 15.44176 121% - 0s H 0 0 8.0000000 15.44176 93.0% - 0s 0 0 15.02878 0 114 8.00000 15.02878 87.9% - 0s 0 0 14.92007 0 117 8.00000 14.92007 86.5% - 0s 0 0 14.90550 0 117 8.00000 14.90550 86.3% - 0s 0 0 14.90107 0 117 8.00000 14.90107 86.3% - 0s 0 0 14.89312 0 118 8.00000 14.89312 86.2% - 0s 0 0 14.89182 0 118 8.00000 14.89182 86.1% - 1s 0 0 14.89128 0 118 8.00000 14.89128 86.1% - 1s 0 0 14.88924 0 118 8.00000 14.88924 86.1% - 1s H 0 0 9.0000000 14.88924 65.4% - 1s 0 0 14.88090 0 118 9.00000 14.88090 65.3% - 1s 0 0 14.87601 0 118 9.00000 14.87601 65.3% - 1s 0 0 14.87593 0 118 9.00000 14.87593 65.3% - 2s 0 0 14.87572 0 118 9.00000 14.87572 65.3% - 2s 0 2 14.87433 0 118 9.00000 14.87433 65.3% - 2s Cutting planes: Clique: 90 Explored 444 nodes (28370 simplex iterations) in 4.46 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%