Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:43:55 2012 Optimize a model with 5415 rows, 9120 columns and 24985 nonzeros Presolve removed 21 rows and 1995 columns Presolve time: 0.13s Presolved: 5394 rows, 7125 columns, 22990 nonzeros Variable types: 0 continuous, 7125 integer (7125 binary) Found heuristic solution: objective 26.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4450 iterations, 0.07 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 (4450 simplex iterations) in 0.21 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%