Gurobi 5.0.1 (linux64) logging started Fri Nov 16 19:20:38 2012 Optimize a model with 11647 rows, 16512 columns and 50814 nonzeros Presolve removed 29 rows and 3458 columns Presolve time: 0.24s Presolved: 11618 rows, 13054 columns, 47176 nonzeros Variable types: 0 continuous, 13054 integer (13054 binary) Found heuristic solution: objective 128.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 186 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 34 3.00000 2.00000 33.3% - 0s Explored 0 nodes (323 simplex iterations) in 0.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%