Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:37:21 2012 Optimize a model with 572 rows, 2756 columns and 4264 nonzeros Presolve removed 34 rows and 1768 columns Presolve time: 0.02s Presolved: 538 rows, 988 columns, 2496 nonzeros Variable types: 0 continuous, 988 integer (988 binary) Found heuristic solution: objective 5.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 500 iterations, 0.00 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 (500 simplex iterations) in 0.02 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%