Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:13:47 2013 Optimize a model with 913 rows, 68973 columns and 137863 nonzeros Presolve time: 0.11s Presolved: 913 rows, 68973 columns, 137863 nonzeros Variable types: 68890 continuous, 83 integer (83 binary) Root relaxation: objective 8.288773e+04, 2086 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 82887.7292 0 9 - 82887.7292 - - 0s H 0 0 91861.000000 82887.7292 9.77% - 0s H 0 0 86573.000000 82887.7292 4.26% - 0s 0 0 83652.6560 0 8 86573.0000 83652.6560 3.37% - 0s 0 0 83778.1820 0 6 86573.0000 83778.1820 3.23% - 0s 0 0 83799.4985 0 7 86573.0000 83799.4985 3.20% - 0s 0 0 83805.3334 0 6 86573.0000 83805.3334 3.20% - 1s 0 0 83805.4634 0 6 86573.0000 83805.4634 3.20% - 1s 0 0 83810.3576 0 6 86573.0000 83810.3576 3.19% - 1s 0 0 83812.9418 0 6 86573.0000 83812.9418 3.19% - 1s 0 0 83813.9175 0 5 86573.0000 83813.9175 3.19% - 1s 0 0 83813.9175 0 5 86573.0000 83813.9175 3.19% - 1s H 0 0 84908.000000 83813.9175 1.29% - 2s 0 0 83813.9175 0 9 84908.0000 83813.9175 1.29% - 2s 0 0 83813.9175 0 8 84908.0000 83813.9175 1.29% - 2s 0 0 83813.9175 0 7 84908.0000 83813.9175 1.29% - 2s 0 0 83813.9175 0 6 84908.0000 83813.9175 1.29% - 2s 0 0 83813.9175 0 5 84908.0000 83813.9175 1.29% - 2s 0 0 83813.9175 0 5 84908.0000 83813.9175 1.29% - 3s 0 0 83813.9175 0 5 84908.0000 83813.9175 1.29% - 3s 0 0 83813.9220 0 5 84908.0000 83813.9220 1.29% - 3s H 0 0 84361.000000 83813.9220 0.65% - 3s 0 2 83815.4816 0 5 84361.0000 83815.4816 0.65% - 3s H 9 7 84204.000000 83877.3809 0.39% 112 4s * 13 8 11 84199.000000 83877.3809 0.38% 83.5 4s 41 10 84151.7955 8 1 84199.0000 83954.7571 0.29% 75.9 5s Cutting planes: Implied bound: 177 Flow cover: 11 Explored 59 nodes (9186 simplex iterations) in 5.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.419900000000e+04, best bound 8.419900000000e+04, gap 0.0%