Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:13:25 2012 Optimize a model with 27 rows, 55 columns and 120 nonzeros Presolve removed 9 rows and 35 columns Presolve time: 0.00s Presolved: 18 rows, 20 columns, 54 nonzeros Variable types: 0 continuous, 20 integer (20 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%