Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:43:08 2012 Optimize a model with 4463 rows, 8742 columns and 21667 nonzeros Presolve removed 37 rows and 3257 columns Presolve time: 0.13s Presolved: 4426 rows, 5485 columns, 18316 nonzeros Variable types: 0 continuous, 5485 integer (5485 binary) Found heuristic solution: objective 93.0000000 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%