Gurobi 5.0.1 (linux64) logging started Fri Nov 16 03:07:45 2012 Optimize a model with 13 rows, 56 columns and 61 nonzeros Presolve removed 6 rows and 7 columns Presolve time: 0.00s Presolved: 14 rows, 49 columns, 98 nonzeros Variable types: 0 continuous, 49 integer (49 binary) Found heuristic solution: objective 0.0000000 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 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0%