Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:59:43 2012 Optimize a model with 7810 rows, 12210 columns and 35200 nonzeros Presolve removed 32 rows and 3520 columns Presolve time: 0.14s Presolved: 7778 rows, 8690 columns, 31680 nonzeros Variable types: 0 continuous, 8690 integer (8690 binary) Found heuristic solution: objective 36.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5851 iterations, 0.16 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 (5851 simplex iterations) in 0.32 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%