Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:01:11 2013 Optimize a model with 902 rows, 67322 columns and 134562 nonzeros Presolve time: 0.10s Presolved: 902 rows, 67322 columns, 134562 nonzeros Variable types: 67240 continuous, 82 integer (82 binary) Root relaxation: objective 8.556292e+04, 2328 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 85562.9227 0 8 - 85562.9227 - - 0s H 0 0 93397.000000 85562.9227 8.39% - 0s 0 0 85786.1830 0 8 93397.0000 85786.1830 8.15% - 0s H 0 0 92009.000000 85786.1830 6.76% - 0s 0 0 85828.0695 0 7 92009.0000 85828.0695 6.72% - 0s H 0 0 91698.000000 85828.0695 6.40% - 0s 0 0 85846.1753 0 6 91698.0000 85846.1753 6.38% - 0s H 0 0 89832.504457 85846.1753 4.44% - 0s H 0 0 88840.000000 85846.1753 3.37% - 0s 0 0 85849.8390 0 5 88840.0000 85849.8390 3.37% - 0s H 0 0 88748.000000 85849.8390 3.27% - 0s 0 0 85849.8390 0 5 88748.0000 85849.8390 3.27% - 1s H 0 0 88724.000000 85849.8390 3.24% - 1s 0 0 85849.8390 0 5 88724.0000 85849.8390 3.24% - 1s 0 0 85849.8390 0 5 88724.0000 85849.8390 3.24% - 1s H 0 0 87345.000000 85849.8390 1.71% - 1s 0 0 85849.8390 0 8 87345.0000 85849.8390 1.71% - 1s 0 0 85849.8390 0 8 87345.0000 85849.8390 1.71% - 2s 0 0 85849.8390 0 8 87345.0000 85849.8390 1.71% - 2s 0 0 85849.8390 0 6 87345.0000 85849.8390 1.71% - 2s 0 0 85849.8390 0 5 87345.0000 85849.8390 1.71% - 2s 0 0 85849.8390 0 5 87345.0000 85849.8390 1.71% - 2s 0 0 85849.8390 0 5 87345.0000 85849.8390 1.71% - 2s 0 0 85849.8390 0 5 87345.0000 85849.8390 1.71% - 2s 0 2 85877.3036 0 5 87345.0000 85877.3036 1.68% - 3s H 4 4 86890.071134 86099.0099 0.91% 63.0 3s H 8 7 86655.000000 86099.0099 0.64% 79.1 3s H 10 7 86542.000000 86099.0099 0.51% 70.1 3s H 12 8 86385.000000 86099.0099 0.33% 62.8 3s * 14 7 12 86333.000000 86099.0099 0.27% 60.9 3s * 19 5 7 86311.000000 86135.2947 0.20% 51.2 3s * 41 2 9 86309.000000 86266.4500 0.05% 57.0 4s Cutting planes: Implied bound: 157 Flow cover: 8 Explored 44 nodes (7745 simplex iterations) in 4.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.630900000000e+04, best bound 8.630900000000e+04, gap 0.0%