Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:58:04 2012 Optimize a model with 7668 rows, 11772 columns and 34344 nonzeros Presolve removed 27 rows and 2916 columns Presolve time: 0.14s Presolved: 7641 rows, 8856 columns, 31428 nonzeros Variable types: 0 continuous, 8856 integer (8856 binary) Found heuristic solution: objective 35.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 7071 iterations, 0.24 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 (7071 simplex iterations) in 0.40 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%