Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:43:58 2012 Optimize a model with 4274 rows, 9120 columns and 21468 nonzeros Presolve removed 36 rows and 3232 columns Presolve time: 0.13s Presolved: 4238 rows, 5888 columns, 18148 nonzeros Variable types: 0 continuous, 5888 integer (5888 binary) Found heuristic solution: objective 95.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.14 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%