Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:54:22 2012 Optimize a model with 10428 rows, 17556 columns and 48312 nonzeros Presolve removed 35 rows and 4620 columns Presolve time: 0.18s Presolved: 10393 rows, 12936 columns, 43692 nonzeros Variable types: 0 continuous, 12936 integer (12936 binary) Found heuristic solution: objective 39.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 8206 iterations, 0.20 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 (8206 simplex iterations) in 0.41 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%