Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:15:16 2012 Optimize a model with 11658 rows, 18090 columns and 52528 nonzeros Presolve removed 299 rows and 4154 columns Presolve time: 0.22s Presolved: 11359 rows, 13936 columns, 47704 nonzeros Variable types: 0 continuous, 13936 integer (13936 binary) Found heuristic solution: objective 46.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 15231 iterations, 1.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (15231 simplex iterations) in 1.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%