Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:02:05 2012 Optimize a model with 7797 rows, 12882 columns and 35821 nonzeros Presolve removed 31 rows and 3503 columns Presolve time: 0.15s Presolved: 7766 rows, 9379 columns, 32318 nonzeros Variable types: 0 continuous, 9379 integer (9379 binary) Found heuristic solution: objective 38.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 6541 iterations, 0.14 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 (6541 simplex iterations) in 0.30 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%