Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:40:43 2012 Optimize a model with 9471 rows, 15252 columns and 43173 nonzeros Presolve removed 35 rows and 4305 columns Presolve time: 0.16s Presolved: 9436 rows, 10947 columns, 38868 nonzeros Variable types: 0 continuous, 10947 integer (10947 binary) Found heuristic solution: objective 39.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 6099 iterations, 0.10 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 (6099 simplex iterations) in 0.29 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%