Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:55:48 2012 Optimize a model with 5512 rows, 11342 columns and 27454 nonzeros Presolve removed 41 rows and 4346 columns Presolve time: 0.14s Presolved: 5471 rows, 6996 columns, 23108 nonzeros Variable types: 0 continuous, 6996 integer (6996 binary) Found heuristic solution: objective 27.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4801 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (4801 simplex iterations) in 0.23 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%