Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:19:38 2012 Optimize a model with 6634 rows, 3906 columns and 23560 nonzeros Presolve removed 807 rows and 62 columns Presolve time: 0.13s Presolved: 5827 rows, 3844 columns, 21638 nonzeros Variable types: 0 continuous, 3844 integer (3844 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 3.000000e+00, 6079 iterations, 0.60 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% - 1s Explored 0 nodes (9557 simplex iterations) in 1.11 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%