Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:05:34 2012 Optimize a model with 8625 rows, 13340 columns and 38755 nonzeros Presolve removed 31 rows and 3565 columns Presolve time: 0.16s Presolved: 8594 rows, 9775 columns, 35190 nonzeros Variable types: 0 continuous, 9775 integer (9775 binary) Found heuristic solution: objective 39.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5631 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 (5631 simplex iterations) in 0.27 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%