Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:49:40 2012 Optimize a model with 5610 rows, 10506 columns and 26928 nonzeros Presolve removed 34 rows and 3468 columns Presolve time: 0.14s Presolved: 5576 rows, 7038 columns, 23460 nonzeros Variable types: 0 continuous, 7038 integer (7038 binary) Found heuristic solution: objective 28.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5222 iterations, 0.14 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 (5222 simplex iterations) in 0.30 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%