Gurobi 5.0.1 (linux64) logging started Fri Nov 30 03:36:17 2012 Optimize a model with 101122 rows, 100489 columns and 601664 nonzeros Presolve removed 316 rows and 1 columns Presolve time: 2.43s Presolved: 100806 rows, 100488 columns, 600400 nonzeros Variable types: 316 continuous, 100172 integer (100172 binary) Root relaxation: objective 6.915020e+05, 3691 iterations, 1.35 seconds Total elapsed time = 11.04s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 691502.000 0 12 - 691502.000 - - 14s H 0 0 751827.00000 691502.000 8.02% - 14s H 0 0 691503.00000 691502.000 0.00% - 16s Explored 0 nodes (9733 simplex iterations) in 16.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.915030000000e+05, best bound 6.915020000000e+05, gap 0.0001%