Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:35:41 2013 Optimize a model with 36720 rows, 36120 columns and 144120 nonzeros Presolve removed 60 rows and 0 columns Presolve time: 0.16s Presolved: 36660 rows, 36120 columns, 144060 nonzeros Variable types: 36060 continuous, 60 integer (60 binary) Warning: Markowitz tolerance tightened to 0.03125 Root relaxation: objective 5.609984e+04, 6267 iterations, 3.73 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 56099.8358 0 52 - 56099.8358 - - 4s H 0 0 80715.000000 56099.8358 30.5% - 5s 0 0 69654.6429 0 8 80715.0000 69654.6429 13.7% - 8s H 0 0 77524.549836 69654.6429 10.2% - 8s H 0 0 74358.000000 69654.6429 6.33% - 8s 0 0 69915.5394 0 2 74358.0000 69915.5394 5.97% - 9s H 0 0 71042.615152 69915.5394 1.59% - 9s H 0 0 70698.000000 69915.5394 1.11% - 9s H 0 0 70142.000000 69915.5394 0.32% - 9s 0 2 69918.5097 0 2 70142.0000 69918.5097 0.32% - 9s 1 3 69976.9114 1 2 70142.0000 69976.9114 0.24% 93.0 10s * 6 4 4 70134.000000 70085.6729 0.07% 269 10s * 10 0 2 70125.000000 70125.0000 0.0% 208 10s Cutting planes: Implied bound: 53 Explored 11 nodes (12140 simplex iterations) in 10.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.012500000000e+04, best bound 7.012500000000e+04, gap 0.0%