Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:08:48 2013 Optimize a model with 60137 rows, 59367 columns and 237237 nonzeros Presolve removed 3286 rows and 0 columns Presolve time: 0.38s Presolved: 56851 rows, 59367 columns, 230665 nonzeros Variable types: 59290 continuous, 77 integer (77 binary) Root relaxation: objective 8.814663e+04, 11739 iterations, 2.27 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 88146.6325 0 2 - 88146.6325 - - 2s H 0 0 88167.000000 88146.6325 0.02% - 2s 0 0 cutoff 0 88167.0000 88167.0000 0.0% - 3s Explored 0 nodes (11849 simplex iterations) in 3.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.816700000000e+04, best bound 8.816700000000e+04, gap 0.0%