Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:04:12 2012 Optimize a model with 6270 rows, 13110 columns and 31464 nonzeros Presolve removed 40 rows and 4560 columns Presolve time: 0.15s Presolved: 6230 rows, 8550 columns, 26904 nonzeros Variable types: 0 continuous, 8550 integer (8550 binary) Found heuristic solution: objective 23.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5374 iterations, 0.08 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 (5374 simplex iterations) in 0.25 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%