Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:17:05 2012 Optimize a model with 355 rows, 236 columns and 1121 nonzeros Presolve time: 0.00s Presolved: 355 rows, 236 columns, 1121 nonzeros Variable types: 0 continuous, 236 integer (236 binary) Found heuristic solution: objective 79.0000000 Root relaxation: objective 0.000000e+00, 101 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 59 79.00000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s 0 0 0.75000 0 61 71.00000 0.75000 98.9% - 0s H 0 0 67.0000000 0.75000 98.9% - 0s 0 0 0.81356 0 61 67.00000 0.81356 98.8% - 0s 0 0 0.85169 0 61 67.00000 0.85169 98.7% - 0s H 0 0 65.0000000 0.85169 98.7% - 0s 0 0 0.87712 0 61 65.00000 0.87712 98.7% - 0s 0 0 0.89831 0 65 65.00000 0.89831 98.6% - 0s 0 0 0.90254 0 61 65.00000 0.90254 98.6% - 0s 0 0 0.94881 0 63 65.00000 0.94881 98.5% - 0s 0 0 0.97881 0 61 65.00000 0.97881 98.5% - 0s 0 0 0.97881 0 61 65.00000 0.97881 98.5% - 0s 0 0 0.97881 0 61 65.00000 0.97881 98.5% - 0s 0 2 0.98077 0 61 65.00000 0.98077 98.5% - 0s * 41 41 27 59.0000000 4.22917 92.8% 27.6 0s * 44 38 29 58.0000000 4.22917 92.7% 26.1 0s * 122 87 25 50.0000000 7.62500 84.8% 24.1 0s * 183 132 20 48.0000000 7.63438 84.1% 25.3 0s * 244 177 21 47.0000000 10.76038 77.1% 25.7 0s * 876 368 24 46.0000000 16.60000 63.9% 25.3 1s * 991 328 22 44.0000000 18.66667 57.6% 25.5 1s * 3382 525 26 43.0000000 29.09804 32.3% 25.0 3s 5731 468 35.80000 18 114 43.00000 33.02273 23.2% 23.9 5s Explored 8255 nodes (189963 simplex iterations) in 6.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%