Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:53:53 2012 Optimize a model with 5096 rows, 10920 columns and 25792 nonzeros Presolve removed 43 rows and 4472 columns Presolve time: 0.13s Presolved: 5053 rows, 6448 columns, 21320 nonzeros Variable types: 0 continuous, 6448 integer (6448 binary) Found heuristic solution: objective 23.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 3753 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (3753 simplex iterations) in 0.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%