Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:14:52 2012 Optimize a model with 3621 rows, 2652 columns and 13311 nonzeros Presolve removed 307 rows and 51 columns Presolve time: 0.08s Presolved: 3314 rows, 2601 columns, 12495 nonzeros Variable types: 0 continuous, 2601 integer (2601 binary) Found heuristic solution: objective 27.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 3349 iterations, 0.11 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 (3349 simplex iterations) in 0.19 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%