Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:22:37 2012 Optimize a model with 8880 rows, 14520 columns and 40680 nonzeros Presolve removed 35 rows and 4200 columns Presolve time: 0.15s Presolved: 8845 rows, 10320 columns, 36480 nonzeros Variable types: 0 continuous, 10320 integer (10320 binary) Found heuristic solution: objective 36.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 9100 iterations, 0.36 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 (9100 simplex iterations) in 0.53 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%