Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:44:03 2012 Optimize a model with 5664 rows, 9312 columns and 25920 nonzeros Presolve removed 30 rows and 2880 columns Presolve time: 0.14s Presolved: 5634 rows, 6432 columns, 23040 nonzeros Variable types: 0 continuous, 6432 integer (6432 binary) Found heuristic solution: objective 27.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4491 iterations, 0.10 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 (4491 simplex iterations) in 0.25 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%