Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:45:35 2012 Optimize a model with 5044 rows, 9506 columns and 24250 nonzeros Presolve removed 37 rows and 3589 columns Presolve time: 0.13s Presolved: 5007 rows, 5917 columns, 20661 nonzeros Variable types: 0 continuous, 5917 integer (5917 binary) Found heuristic solution: objective 27.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4734 iterations, 0.15 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 (4734 simplex iterations) in 0.29 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%