Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:14:43 2012 Optimize a model with 3150 rows, 2550 columns and 11800 nonzeros Presolve removed 303 rows and 150 columns Presolve time: 0.07s Presolved: 2847 rows, 2400 columns, 10900 nonzeros Variable types: 0 continuous, 2400 integer (2400 binary) Found heuristic solution: objective 32.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 2828 iterations, 0.07 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 (2828 simplex iterations) in 0.15 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%