Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:29 2012 Optimize a model with 1519 rows, 79 columns and 3038 nonzeros Presolve removed 1075 rows and 0 columns Presolve time: 0.04s Presolved: 444 rows, 79 columns, 2735 nonzeros Variable types: 0 continuous, 79 integer (79 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.239761e+01, 307 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 12.39761 0 76 7.00000 12.39761 77.1% - 0s H 0 0 8.0000000 12.39761 55.0% - 0s 0 0 12.08364 0 78 8.00000 12.08364 51.0% - 0s 0 0 12.01204 0 78 8.00000 12.01204 50.2% - 0s 0 0 11.99092 0 79 8.00000 11.99092 49.9% - 0s 0 0 11.94401 0 78 8.00000 11.94401 49.3% - 0s 0 0 11.93337 0 79 8.00000 11.93337 49.2% - 0s 0 0 11.92127 0 78 8.00000 11.92127 49.0% - 0s 0 0 11.91575 0 78 8.00000 11.91575 48.9% - 0s 0 0 11.90640 0 79 8.00000 11.90640 48.8% - 0s 0 0 11.90237 0 79 8.00000 11.90237 48.8% - 0s 0 0 11.89827 0 79 8.00000 11.89827 48.7% - 0s 0 0 11.89600 0 79 8.00000 11.89600 48.7% - 0s 0 0 11.88009 0 78 8.00000 11.88009 48.5% - 0s 0 0 11.87456 0 78 8.00000 11.87456 48.4% - 0s 0 0 11.87450 0 78 8.00000 11.87450 48.4% - 0s 0 0 11.87449 0 78 8.00000 11.87449 48.4% - 0s 0 2 11.87449 0 78 8.00000 11.87449 48.4% - 0s * 103 1 4 9.0000000 10.01569 11.3% 39.6 0s Cutting planes: Clique: 41 Zero half: 5 Explored 105 nodes (4868 simplex iterations) in 0.73 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%