Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:54:59 2012 Optimize a model with 5670 rows, 11130 columns and 27720 nonzeros Presolve removed 37 rows and 3885 columns Presolve time: 0.14s Presolved: 5633 rows, 7245 columns, 23835 nonzeros Variable types: 0 continuous, 7245 integer (7245 binary) Found heuristic solution: objective 28.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 4416 iterations, 0.07 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 (4416 simplex iterations) in 0.23 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%