Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:26:50 2012 Optimize a model with 417 rows, 237 columns and 1277 nonzeros Presolve time: 0.00s Presolved: 417 rows, 237 columns, 1277 nonzeros Variable types: 0 continuous, 237 integer (237 binary) Found heuristic solution: objective 113.0000000 Found heuristic solution: objective 100.0000000 Root relaxation: objective 0.000000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 29 100.00000 0.00000 100% - 0s H 0 0 94.0000000 0.00000 100% - 0s 0 0 0.77073 0 47 94.00000 0.77073 99.2% - 0s H 0 0 91.0000000 0.77073 99.2% - 0s 0 0 0.81281 0 31 91.00000 0.81281 99.1% - 0s 0 0 0.83744 0 31 91.00000 0.83744 99.1% - 0s 0 0 0.86207 0 31 91.00000 0.86207 99.1% - 0s 0 0 0.86207 0 31 91.00000 0.86207 99.1% - 0s 0 0 0.86207 0 31 91.00000 0.86207 99.1% - 0s 0 0 0.86207 0 31 91.00000 0.86207 99.1% - 0s 0 2 0.98214 0 31 91.00000 0.98214 98.9% - 0s * 34 25 18 90.0000000 9.57143 89.4% 37.0 0s * 243 148 19 89.0000000 23.73469 73.3% 36.4 0s * 1306 366 37 88.0000000 41.40000 53.0% 30.7 1s * 1307 349 36 87.0000000 41.40000 52.4% 30.7 1s * 3907 922 32 85.0000000 54.19048 36.2% 26.7 3s H 4202 932 83.0000000 54.95000 33.8% 26.4 4s 5128 1050 68.05263 25 125 83.00000 57.60000 30.6% 26.2 5s H 5324 1054 82.0000000 58.00000 29.3% 26.1 5s * 5806 1082 34 81.0000000 58.65000 27.6% 25.9 5s 11737 1005 79.82353 27 129 81.00000 66.00000 18.5% 24.5 10s Cutting planes: Gomory: 1 Mod-K: 4 Explored 16786 nodes (391115 simplex iterations) in 12.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.100000000000e+01, best bound 8.100000000000e+01, gap 0.0%