Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:02 2013 Optimize a model with 23568 rows, 23088 columns and 92208 nonzeros Presolve removed 1400 rows and 0 columns Presolve time: 0.13s Presolved: 22168 rows, 23088 columns, 89408 nonzeros Variable types: 23040 continuous, 48 integer (48 binary) Root relaxation: objective 5.615200e+04, 4021 iterations, 0.32 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 56152.000000 56152.0000 0.0% - 0s Explored 0 nodes (4021 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.615200000000e+04, best bound 5.615200000000e+04, gap 0.0%