Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:36:24 2012 Optimize a model with 10209 rows, 15252 columns and 45387 nonzeros Presolve removed 281 rows and 4305 columns Presolve time: 0.18s Presolved: 9928 rows, 10947 columns, 40467 nonzeros Variable types: 0 continuous, 10947 integer (10947 binary) Found heuristic solution: objective 33.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 10487 iterations, 0.37 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 (10487 simplex iterations) in 0.58 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%