Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:07:44 2012 Optimize a model with 2640 rows, 506 columns and 8338 nonzeros Presolve removed 1666 rows and 0 columns Presolve time: 0.04s Presolved: 974 rows, 506 columns, 5690 nonzeros Variable types: 0 continuous, 506 integer (506 binary) Found heuristic solution: objective 16.0000000 Root relaxation: objective 6.000000e+00, 2102 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 6.00000 0 16 16.00000 6.00000 62.5% - 0s H 0 0 7.0000000 6.00000 14.3% - 0s H 0 0 6.0000000 6.00000 0.0% - 0s Explored 0 nodes (2990 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%