Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:35:22 2013 Optimize a model with 1370 rows, 31088 columns and 1564490 nonzeros Presolve removed 30 rows and 138 columns (presolve time = 5s) ... Presolve removed 30 rows and 147 columns Presolve time: 6.36s Presolved: 1340 rows, 30941 columns, 1558197 nonzeros Variable types: 0 continuous, 30941 integer (30941 binary) Found heuristic solution: objective 16581.000000 Root relaxation: objective 1.169800e+04, 7075 iterations, 3.59 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 11698.000000 11698.0000 0.0% - 10s Explored 0 nodes (7075 simplex iterations) in 10.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.169800000000e+04, best bound 1.169800000000e+04, gap 0.0000%