Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:45:35 2012 Optimize a model with 4753 rows, 9506 columns and 23377 nonzeros Presolve removed 426 rows and 3686 columns Presolve time: 0.13s Presolved: 4327 rows, 5820 columns, 18721 nonzeros Variable types: 0 continuous, 5820 integer (5820 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 3.000000e+00, 4961 iterations, 0.11 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 (6057 simplex iterations) in 0.28 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%