Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:46:37 2012 Optimize a model with 4801 rows, 9702 columns and 23616 nonzeros Presolve removed 38 rows and 3530 columns Presolve time: 0.12s Presolved: 4763 rows, 6172 columns, 19990 nonzeros Variable types: 0 continuous, 6172 integer (6172 binary) Found heuristic solution: objective 98.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.13 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%