Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:40:39 2012 Optimize a model with 10790 rows, 17030 columns and 48880 nonzeros Presolve removed 35 rows and 4550 columns Presolve time: 0.18s Presolved: 10755 rows, 12480 columns, 44330 nonzeros Variable types: 0 continuous, 12480 integer (12480 binary) Found heuristic solution: objective 44.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 8763 iterations, 0.25 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 (8763 simplex iterations) in 0.46 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%