Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:26:16 2012 Optimize a model with 9107 rows, 4830 columns and 31807 nonzeros Presolve removed 624 rows and 71 columns Presolve time: 0.35s Presolved: 8483 rows, 4759 columns, 29974 nonzeros Variable types: 0 continuous, 4759 integer (4759 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 3.000000e+00, 5328 iterations, 0.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 2s Explored 0 nodes (15445 simplex iterations) in 2.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%