Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:35:09 2012 Optimize a model with 12784 rows, 18632 columns and 56440 nonzeros Presolve removed 37 rows and 5032 columns Presolve time: 0.23s Presolved: 12747 rows, 13600 columns, 51408 nonzeros Variable types: 0 continuous, 13600 integer (13600 binary) Found heuristic solution: objective 49.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 10405 iterations, 0.45 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 (10405 simplex iterations) in 0.70 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%