Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:04:46 2012 Optimize a model with 9144 rows, 16256 columns and 43180 nonzeros Presolve removed 297 rows and 5461 columns Presolve time: 0.18s Presolved: 8847 rows, 10795 columns, 37084 nonzeros Variable types: 0 continuous, 10795 integer (10795 binary) Found heuristic solution: objective 36.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 10224 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 3.00000 2.00000 33.3% - 0s Explored 0 nodes (10224 simplex iterations) in 0.57 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%