Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:40:25 2012 Optimize a model with 2772 rows, 7140 columns and 15120 nonzeros Presolve removed 35 rows and 2940 columns Presolve time: 0.09s Presolved: 2737 rows, 4200 columns, 12180 nonzeros Variable types: 0 continuous, 4200 integer (4200 binary) Found heuristic solution: objective 13.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 2652 iterations, 0.03 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 (2652 simplex iterations) in 0.12 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%