Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:40:05 2012 Optimize a model with 3077 rows, 6642 columns and 15469 nonzeros Presolve removed 35 rows and 2675 columns Presolve time: 0.11s Presolved: 3042 rows, 3967 columns, 12720 nonzeros Variable types: 0 continuous, 3967 integer (3967 binary) Found heuristic solution: objective 81.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.12 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%