Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:23:26 2013 Optimize a model with 1870 rows, 289170 columns and 578170 nonzeros Presolve time: 0.80s Presolved: 1870 rows, 289170 columns, 578170 nonzeros Variable types: 289000 continuous, 170 integer (170 binary) Root relaxation: objective 3.511706e+05, 8424 iterations, 0.72 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 351170.613 0 8 - 351170.613 - - 1s H 0 0 380446.00000 351170.613 7.70% - 2s H 0 0 355793.00000 351170.613 1.30% - 3s 0 0 351628.891 0 7 355793.000 351628.891 1.17% - 4s 0 0 351628.891 0 8 355793.000 351628.891 1.17% - 6s 0 0 351633.926 0 7 355793.000 351633.926 1.17% - 7s 0 0 351706.134 0 7 355793.000 351706.134 1.15% - 7s 0 0 351724.986 0 6 355793.000 351724.986 1.14% - 8s 0 0 351733.264 0 6 355793.000 351733.264 1.14% - 8s 0 0 351733.264 0 6 355793.000 351733.264 1.14% - 9s 0 0 351734.331 0 6 355793.000 351734.331 1.14% - 9s 0 0 351734.335 0 6 355793.000 351734.335 1.14% - 10s 0 2 351757.558 0 6 355793.000 351757.558 1.13% - 12s H 9 9 352466.00000 351916.838 0.16% 91.2 13s H 11 11 352456.00000 351916.838 0.15% 86.1 14s H 12 12 352294.00000 351916.838 0.11% 83.7 14s * 16 12 15 352185.00000 351916.838 0.08% 67.6 14s 19 12 351969.857 7 1 352185.000 351931.210 0.07% 63.8 15s * 42 5 7 352095.00000 352021.068 0.02% 94.3 17s Cutting planes: Implied bound: 257 Flow cover: 7 Explored 47 nodes (21216 simplex iterations) in 17.92 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.520950000000e+05, best bound 3.520950000000e+05, gap 0.0%