Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:15:14 2012 Optimize a model with 11524 rows, 18090 columns and 52126 nonzeros Presolve removed 311 rows and 5762 columns Presolve time: 0.22s Presolved: 11213 rows, 12328 columns, 45694 nonzeros Variable types: 0 continuous, 12328 integer (12328 binary) Found heuristic solution: objective 42.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 12508 iterations, 0.77 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 (12508 simplex iterations) in 1.02 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%