Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:19:40 2012 Optimize a model with 5456 rows, 3906 columns and 20026 nonzeros Presolve removed 252 rows and 248 columns Presolve time: 0.12s Presolved: 5204 rows, 3658 columns, 19158 nonzeros Variable types: 0 continuous, 3658 integer (3658 binary) Found heuristic solution: objective 34.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 5563 iterations, 0.47 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (5563 simplex iterations) in 0.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%