Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:39:34 2012 Optimize a model with 2964 rows, 6162 columns and 14742 nonzeros Presolve removed 26 rows and 2028 columns Presolve time: 0.09s Presolved: 2938 rows, 4134 columns, 12714 nonzeros Variable types: 0 continuous, 4134 integer (4134 binary) Found heuristic solution: objective 20.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 2497 iterations, 0.02 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 (2497 simplex iterations) in 0.12 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%