Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:36:31 2012 Optimize a model with 50 rows, 306 columns and 372 nonzeros Presolve removed 18 rows and 258 columns Presolve time: 0.00s Presolved: 32 rows, 48 columns, 109 nonzeros Variable types: 0 continuous, 48 integer (48 binary) Found heuristic solution: objective 13.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.00 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%