Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:52:19 2012 Optimize a model with 747 rows, 166 columns and 1494 nonzeros Presolve removed 176 rows and 0 columns Presolve time: 0.00s Presolved: 571 rows, 166 columns, 1265 nonzeros Variable types: 0 continuous, 166 integer (166 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 6.650000e+01, 282 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 66.50000 0 129 49.00000 66.50000 35.7% - 0s 0 0 65.51463 0 165 49.00000 65.51463 33.7% - 0s 0 0 64.44130 0 163 49.00000 64.44130 31.5% - 0s H 0 0 50.0000000 64.44130 28.9% - 0s 0 0 63.77348 0 162 50.00000 63.77348 27.5% - 0s 0 0 63.05268 0 166 50.00000 63.05268 26.1% - 0s 0 0 62.56572 0 166 50.00000 62.56572 25.1% - 0s 0 0 62.40591 0 165 50.00000 62.40591 24.8% - 0s 0 0 62.30027 0 165 50.00000 62.30027 24.6% - 0s 0 0 62.19792 0 166 50.00000 62.19792 24.4% - 0s 0 0 62.11758 0 166 50.00000 62.11758 24.2% - 0s 0 0 62.00960 0 165 50.00000 62.00960 24.0% - 0s 0 0 61.97078 0 165 50.00000 61.97078 23.9% - 0s 0 0 61.97078 0 165 50.00000 61.97078 23.9% - 0s H 0 0 52.0000000 61.97078 19.2% - 0s 0 2 61.97035 0 165 52.00000 61.97035 19.2% - 0s * 16 16 12 53.0000000 61.81580 16.6% 63.9 0s 613 264 58.84615 9 163 53.00000 59.22222 11.7% 41.3 5s 3390 1165 54.57143 31 113 53.00000 57.50000 8.49% 33.6 10s H 5010 1124 54.0000000 56.96887 5.50% 30.4 11s Cutting planes: Gomory: 3 Zero half: 71 Explored 7576 nodes (207361 simplex iterations) in 13.98 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.400000000000e+01, best bound 5.400000000000e+01, gap 0.0%