Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:43:18 2012 Optimize a model with 4605 rows, 8930 columns and 22276 nonzeros Presolve removed 30 rows and 2634 columns Presolve time: 0.13s Presolved: 4575 rows, 6296 columns, 19546 nonzeros Variable types: 0 continuous, 6296 integer (6296 binary) Found heuristic solution: objective 94.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.14 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%