Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:22:45 2012 Optimize a model with 6534 rows, 4422 columns and 23760 nonzeros Presolve removed 399 rows and 198 columns Presolve time: 0.13s Presolved: 6135 rows, 4224 columns, 22572 nonzeros Variable types: 0 continuous, 4224 integer (4224 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 3.000000e+00, 6111 iterations, 0.36 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 (7828 simplex iterations) in 0.64 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%