Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:38:36 2012 Optimize a model with 383 rows, 252 columns and 1207 nonzeros Presolve time: 0.00s Presolved: 383 rows, 252 columns, 1207 nonzeros Variable types: 0 continuous, 252 integer (252 binary) Found heuristic solution: objective 94.0000000 Root relaxation: objective 0.000000e+00, 89 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 61 94.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s 0 0 0.58638 0 62 75.00000 0.58638 99.2% - 0s 0 0 1.00000 0 63 75.00000 1.00000 98.7% - 0s 0 0 1.37979 0 64 75.00000 1.37979 98.2% - 0s 0 0 1.50248 0 64 75.00000 1.50248 98.0% - 0s 0 2 1.56341 0 64 75.00000 1.56341 97.9% - 0s * 46 40 28 63.0000000 7.87518 87.5% 29.1 0s * 99 80 31 60.0000000 8.73978 85.4% 29.3 0s H 192 150 59.0000000 12.02461 79.6% 31.1 0s * 212 155 24 55.0000000 12.02461 78.1% 30.4 0s * 434 273 20 54.0000000 14.55709 73.0% 29.9 0s * 439 264 22 53.0000000 14.55709 72.5% 29.6 0s * 1175 474 32 52.0000000 17.83649 65.7% 29.9 1s 4063 1197 cutoff 27 52.00000 26.60000 48.8% 28.4 5s * 4413 1272 29 51.0000000 27.14286 46.8% 28.4 5s * 5655 1494 31 50.0000000 29.00000 42.0% 28.0 6s * 7849 1747 27 49.0000000 30.86957 37.0% 27.4 8s 9023 1822 47.00000 26 113 49.00000 31.63043 35.4% 27.5 10s 14864 1931 46.26531 23 122 49.00000 34.97222 28.6% 26.9 15s 21148 1587 43.50000 23 119 49.00000 37.47826 23.5% 26.4 20s 28335 638 cutoff 25 49.00000 41.59524 15.1% 25.8 25s Cutting planes: Gomory: 3 Explored 30058 nodes (767246 simplex iterations) in 26.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.900000000000e+01, best bound 4.900000000000e+01, gap 0.0%