Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:25:18 2013 Optimize a model with 781 rows, 50481 columns and 100891 nonzeros Presolve time: 0.07s Presolved: 781 rows, 50481 columns, 100891 nonzeros Variable types: 50410 continuous, 71 integer (71 binary) Root relaxation: objective 8.243084e+04, 2047 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 82430.8414 0 11 - 82430.8414 - - 0s H 0 0 87891.000000 82430.8414 6.21% - 0s H 0 0 83930.000000 82430.8414 1.79% - 0s 0 0 83034.0225 0 9 83930.0000 83034.0225 1.07% - 0s 0 0 83175.2111 0 8 83930.0000 83175.2111 0.90% - 0s 0 0 83224.2824 0 5 83930.0000 83224.2824 0.84% - 0s 0 0 83233.3372 0 8 83930.0000 83233.3372 0.83% - 0s 0 0 83240.1579 0 7 83930.0000 83240.1579 0.82% - 0s 0 0 83242.2825 0 7 83930.0000 83242.2825 0.82% - 0s 0 0 83242.2825 0 11 83930.0000 83242.2825 0.82% - 1s 0 0 83242.2825 0 7 83930.0000 83242.2825 0.82% - 1s 0 0 83242.2825 0 9 83930.0000 83242.2825 0.82% - 1s 0 0 83242.2825 0 5 83930.0000 83242.2825 0.82% - 1s 0 0 83242.2825 0 8 83930.0000 83242.2825 0.82% - 1s 0 0 83242.2825 0 7 83930.0000 83242.2825 0.82% - 1s 0 0 83242.2825 0 7 83930.0000 83242.2825 0.82% - 1s 0 0 83242.2825 0 7 83930.0000 83242.2825 0.82% - 1s 0 2 83278.2291 0 7 83930.0000 83278.2291 0.78% - 2s * 9 6 7 83632.000000 83407.9588 0.27% 63.6 2s Cutting planes: Implied bound: 182 Flow cover: 8 Explored 21 nodes (5868 simplex iterations) in 2.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.363200000000e+04, best bound 8.363200000000e+04, gap 0.0%