Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:09:58 2012 Optimize a model with 321 rows, 552 columns and 1401 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.01s Presolved: 342 rows, 550 columns, 1902 nonzeros Variable types: 0 continuous, 550 integer (550 binary) Found heuristic solution: objective 23.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 0 iterations, 0.00 seconds Explored 0 nodes (0 simplex iterations) in 0.01 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%