Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:03:17 2012 Optimize a model with 11970 rows, 17822 columns and 53200 nonzeros Presolve removed 299 rows and 4389 columns Presolve time: 0.23s Presolved: 11671 rows, 13433 columns, 48146 nonzeros Variable types: 0 continuous, 13433 integer (13433 binary) Found heuristic solution: objective 42.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 14590 iterations, 0.85 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% - 1s Explored 0 nodes (14590 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%