Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:37:10 2012 Optimize a model with 623 rows, 2352 columns and 3982 nonzeros Presolve removed 34 rows and 1538 columns Presolve time: 0.04s Presolved: 589 rows, 814 columns, 2420 nonzeros Variable types: 0 continuous, 814 integer (814 binary) Found heuristic solution: objective 48.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.04 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%