Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:36:32 2012 Optimize a model with 56 rows, 380 columns and 454 nonzeros Presolve removed 20 rows and 326 columns Presolve time: 0.00s Presolved: 36 rows, 54 columns, 123 nonzeros Variable types: 0 continuous, 54 integer (54 binary) Found heuristic solution: objective 15.0000000 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%