Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:21:54 2012 Optimize a model with 5915 rows, 4290 columns and 21775 nonzeros Presolve removed 523 rows and 195 columns Presolve time: 0.13s Presolved: 5392 rows, 4095 columns, 20280 nonzeros Variable types: 0 continuous, 4095 integer (4095 binary) Found heuristic solution: objective 34.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 5632 iterations, 0.24 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (5632 simplex iterations) in 0.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%