Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:51:24 2012 Optimize a model with 385 rows, 275 columns and 1235 nonzeros Presolve time: 0.00s Presolved: 385 rows, 275 columns, 1235 nonzeros Variable types: 0 continuous, 275 integer (275 binary) Found heuristic solution: objective 82.0000000 Root relaxation: objective 0.000000e+00, 115 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 83 82.00000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.71687 0 85 76.00000 0.71687 99.1% - 0s H 0 0 72.0000000 0.71687 99.0% - 0s 0 0 0.73733 0 85 72.00000 0.73733 99.0% - 0s H 0 0 68.0000000 0.73733 98.9% - 0s 0 0 0.74328 0 85 68.00000 0.74328 98.9% - 0s 0 0 0.74328 0 85 68.00000 0.74328 98.9% - 0s H 0 0 60.0000000 0.74328 98.8% - 0s H 0 0 59.0000000 0.74328 98.7% - 0s 0 2 0.76667 0 85 59.00000 0.76667 98.7% - 0s * 45 45 24 50.0000000 3.07634 93.8% 27.8 0s H 54 48 49.0000000 3.26547 93.3% 29.9 0s * 86 66 27 45.0000000 3.26547 92.7% 27.2 0s * 129 91 23 44.0000000 6.92222 84.3% 26.8 0s * 176 127 18 43.0000000 6.97412 83.8% 28.2 0s * 316 204 17 42.0000000 11.35613 73.0% 27.5 0s * 380 221 18 41.0000000 11.71185 71.4% 26.1 0s * 2245 556 38 40.0000000 22.87500 42.8% 25.0 2s * 3694 714 37 39.0000000 25.87097 33.7% 24.2 3s 4881 738 32.23077 24 128 39.00000 27.84615 28.6% 23.8 5s * 6137 647 29 38.0000000 29.40000 22.6% 23.4 5s Explored 8994 nodes (201331 simplex iterations) in 8.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%