Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:41:01 2012 Optimize a model with 10912 rows, 15500 columns and 47740 nonzeros Presolve removed 26 rows and 3224 columns Presolve time: 0.18s Presolved: 10886 rows, 12276 columns, 44516 nonzeros Variable types: 0 continuous, 12276 integer (12276 binary) Found heuristic solution: objective 37.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 12428 iterations, 0.99 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% - 1s Explored 0 nodes (12428 simplex iterations) in 1.20 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%