Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:45:39 2012 Optimize a model with 4849 rows, 9506 columns and 23569 nonzeros Presolve removed 428 rows and 3688 columns Presolve time: 0.12s Presolved: 4421 rows, 5818 columns, 18821 nonzeros Variable types: 0 continuous, 5818 integer (5818 binary) Found heuristic solution: objective 97.0000000 Root relaxation: objective 3.000000e+00, 3024 iterations, 0.07 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% - 0s Explored 0 nodes (8005 simplex iterations) in 0.63 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%