Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:11:26 2012 Optimize a model with 1677 rows, 1560 columns and 6435 nonzeros Presolve removed 81 rows and 117 columns Presolve time: 0.03s Presolved: 1596 rows, 1443 columns, 6123 nonzeros Variable types: 0 continuous, 1443 integer (1443 binary) Found heuristic solution: objective 16.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: cutoff, 1597 iterations, 0.04 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 (1597 simplex iterations) in 0.07 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%