Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:32:53 2012 Optimize a model with 8945 rows, 5112 columns and 31593 nonzeros Presolve removed 1141 rows and 215 columns Presolve time: 0.34s Presolved: 7804 rows, 4897 columns, 28462 nonzeros Variable types: 0 continuous, 4897 integer (4897 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 3.000000e+00, 6616 iterations, 0.89 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% - 3s Explored 0 nodes (23373 simplex iterations) in 3.90 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%