Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:25:40 2012 Optimize a model with 8211 rows, 4830 columns and 29187 nonzeros Presolve removed 830 rows and 138 columns Presolve time: 0.15s Presolved: 7381 rows, 4692 columns, 27117 nonzeros Variable types: 0 continuous, 4692 integer (4692 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 3.000000e+00, 8717 iterations, 1.06 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 (15667 simplex iterations) in 1.89 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%