Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:43:16 2012 Optimize a model with 4794 rows, 8930 columns and 22936 nonzeros Presolve removed 29 rows and 2726 columns Presolve time: 0.12s Presolved: 4765 rows, 6204 columns, 20210 nonzeros Variable types: 0 continuous, 6204 integer (6204 binary) Found heuristic solution: objective 29.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4029 iterations, 0.07 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 (4029 simplex iterations) in 0.20 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%