Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:15:47 2012 Optimize a model with 4536 rows, 2970 columns and 16362 nonzeros Presolve removed 324 rows and 0 columns Presolve time: 0.10s Presolved: 4212 rows, 2970 columns, 15552 nonzeros Variable types: 0 continuous, 2970 integer (2970 binary) Found heuristic solution: objective 31.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 3634 iterations, 0.16 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (3634 simplex iterations) in 0.27 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%