Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:15:18 2012 Optimize a model with 4264 rows, 2756 columns and 15340 nonzeros Presolve removed 522 rows and 104 columns Presolve time: 0.09s Presolved: 3742 rows, 2652 columns, 13936 nonzeros Variable types: 0 continuous, 2652 integer (2652 binary) Found heuristic solution: objective 26.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 3539 iterations, 0.18 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 (3539 simplex iterations) in 0.28 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%