Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:54:03 2012 Optimize a model with 5528 rows, 149 columns and 11056 nonzeros Presolve removed 3967 rows and 0 columns Presolve time: 0.22s Presolved: 1561 rows, 149 columns, 11286 nonzeros Variable types: 0 continuous, 149 integer (149 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.865726e+01, 639 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.65726 0 142 7.00000 18.65726 167% - 0s H 0 0 8.0000000 18.65726 133% - 0s 0 0 18.15198 0 149 8.00000 18.15198 127% - 0s 0 0 17.97641 0 147 8.00000 17.97641 125% - 0s 0 0 17.91230 0 149 8.00000 17.91230 124% - 1s 0 0 17.87019 0 149 8.00000 17.87019 123% - 1s 0 0 17.86665 0 149 8.00000 17.86665 123% - 1s 0 0 17.86232 0 149 8.00000 17.86232 123% - 1s H 0 0 9.0000000 17.86232 98.5% - 1s 0 0 17.85439 0 149 9.00000 17.85439 98.4% - 1s 0 0 17.84819 0 148 9.00000 17.84819 98.3% - 2s 0 0 17.83861 0 149 9.00000 17.83861 98.2% - 2s 0 0 17.83159 0 149 9.00000 17.83159 98.1% - 2s 0 0 17.83013 0 149 9.00000 17.83013 98.1% - 2s 0 0 17.82830 0 149 9.00000 17.82830 98.1% - 2s H 0 0 10.0000000 17.82830 78.3% - 2s 0 0 17.82811 0 149 10.00000 17.82811 78.3% - 3s 0 2 17.82440 0 149 10.00000 17.82440 78.2% - 3s 140 110 14.59666 4 78 10.00000 17.29466 72.9% 89.7 5s 601 306 11.42857 6 149 10.00000 14.66525 46.7% 80.5 12s 615 317 14.66525 13 145 10.00000 14.66525 46.7% 83.2 15s 1106 338 11.85284 18 45 10.00000 13.98564 39.9% 89.8 20s 1602 285 12.21364 32 65 10.00000 12.99953 30.0% 77.1 25s Cutting planes: Clique: 57 Explored 2240 nodes (147402 simplex iterations) in 29.69 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%