Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:49:42 2012 Optimize a model with 6528 rows, 10506 columns and 29682 nonzeros Presolve removed 30 rows and 3060 columns Presolve time: 0.14s Presolved: 6498 rows, 7446 columns, 26622 nonzeros Variable types: 0 continuous, 7446 integer (7446 binary) Found heuristic solution: objective 35.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5835 iterations, 0.17 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 (5835 simplex iterations) in 0.32 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%