Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:41:04 2012 Optimize a model with 4262 rows, 7656 columns and 20008 nonzeros Presolve removed 26 rows and 2090 columns Presolve time: 0.12s Presolved: 4236 rows, 5566 columns, 17822 nonzeros Variable types: 0 continuous, 5566 integer (5566 binary) Found heuristic solution: objective 87.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.13 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%