Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:48:47 2012 Optimize a model with 4599 rows, 10100 columns and 23398 nonzeros Presolve removed 41 rows and 3902 columns Presolve time: 0.12s Presolved: 4558 rows, 6198 columns, 19406 nonzeros Variable types: 0 continuous, 6198 integer (6198 binary) Found heuristic solution: objective 100.0000000 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%