Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:50:28 2012 Optimize a model with 399 rows, 264 columns and 1259 nonzeros Presolve time: 0.00s Presolved: 399 rows, 264 columns, 1259 nonzeros Variable types: 0 continuous, 264 integer (264 binary) Found heuristic solution: objective 90.0000000 Root relaxation: objective 0.000000e+00, 97 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 65 90.00000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s 0 0 0.53942 0 67 82.00000 0.53942 99.3% - 0s 0 0 0.74038 0 67 82.00000 0.74038 99.1% - 0s 0 0 0.75096 0 67 82.00000 0.75096 99.1% - 0s 0 0 0.75777 0 73 82.00000 0.75777 99.1% - 0s 0 0 0.75945 0 67 82.00000 0.75945 99.1% - 0s 0 0 0.76061 0 68 82.00000 0.76061 99.1% - 0s 0 0 0.76061 0 68 82.00000 0.76061 99.1% - 0s H 0 0 67.0000000 0.76061 98.9% - 0s H 0 0 66.0000000 0.76061 98.8% - 0s 0 2 0.82031 0 68 66.00000 0.82031 98.8% - 0s H 40 40 59.0000000 3.30038 94.4% 30.9 0s * 52 45 31 57.0000000 3.30038 94.2% 25.5 0s * 208 152 22 56.0000000 7.96528 85.8% 26.7 0s * 369 274 22 55.0000000 12.72642 76.9% 26.4 0s * 378 270 23 54.0000000 12.72642 76.4% 26.0 0s * 814 437 32 50.0000000 16.43750 67.1% 27.0 1s * 1240 413 31 49.0000000 23.18591 52.7% 26.3 1s * 1663 371 28 48.0000000 27.17928 43.4% 25.5 2s * 2716 492 27 47.0000000 30.18750 35.8% 24.2 3s 4454 548 42.41176 23 126 47.00000 33.38462 29.0% 23.1 5s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 3 Explored 9168 nodes (191598 simplex iterations) in 8.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%