Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:01:48 2012 Optimize a model with 6272 rows, 12656 columns and 31024 nonzeros Presolve removed 35 rows and 3920 columns Presolve time: 0.14s Presolved: 6237 rows, 8736 columns, 27104 nonzeros Variable types: 0 continuous, 8736 integer (8736 binary) Found heuristic solution: objective 22.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5373 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 (5373 simplex iterations) in 0.24 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%