Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:11:25 2013 Optimize a model with 47056 rows, 46376 columns and 185096 nonzeros Presolve removed 68 rows and 0 columns Presolve time: 0.21s Presolved: 46988 rows, 46376 columns, 185028 nonzeros Variable types: 46308 continuous, 68 integer (68 binary) Root relaxation: objective 5.739594e+04, 5824 iterations, 3.37 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 57395.9350 0 51 - 57395.9350 - - 3s H 0 0 82980.000000 57395.9350 30.8% - 5s 0 0 70263.8323 0 15 82980.0000 70263.8323 15.3% - 10s H 0 0 76566.000000 70263.8323 8.23% - 11s 0 0 71481.7868 0 6 76566.0000 71481.7868 6.64% - 12s H 0 0 74757.085735 71481.7868 4.38% - 12s H 0 0 73795.000000 71481.7868 3.13% - 12s H 0 0 73670.000000 71481.7868 2.97% - 12s 0 0 71613.8230 0 4 73670.0000 71613.8230 2.79% - 12s H 0 0 73022.000000 71613.8230 1.93% - 12s 0 0 71648.8331 0 3 73022.0000 71648.8331 1.88% - 13s H 0 0 72694.000000 71648.8331 1.44% - 13s 0 2 71658.9706 0 3 72694.0000 71658.9706 1.42% - 14s H 1 1 71844.205882 71658.9706 0.26% 0.0 14s H 4 2 71764.949045 71677.4397 0.12% 116 14s H 5 2 71725.347518 71687.2199 0.05% 117 14s H 6 2 71723.500000 71692.9091 0.04% 99.3 14s * 7 2 6 71705.000000 71692.9091 0.02% 87.7 14s Cutting planes: Implied bound: 64 Explored 10 nodes (13319 simplex iterations) in 14.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.170500000000e+04, best bound 7.170500000000e+04, gap 0.0%