Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:53:52 2012 Optimize a model with 5200 rows, 10920 columns and 26104 nonzeros Presolve removed 245 rows and 3848 columns Presolve time: 0.14s Presolved: 4955 rows, 7072 columns, 21736 nonzeros Variable types: 0 continuous, 7072 integer (7072 binary) Found heuristic solution: objective 21.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 6978 iterations, 0.18 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 (6978 simplex iterations) in 0.34 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%