Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:07:06 2012 Optimize a model with 1899 rows, 420 columns and 6018 nonzeros Presolve removed 1062 rows and 2 columns Presolve time: 0.05s Presolved: 857 rows, 418 columns, 4554 nonzeros Variable types: 0 continuous, 418 integer (418 binary) Found heuristic solution: objective 20.0000000 Root relaxation: objective 5.000000e+00, 1634 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5.00000 0 52 20.00000 5.00000 75.0% - 0s H 0 0 10.0000000 5.00000 50.0% - 0s H 0 0 8.0000000 5.00000 37.5% - 0s H 0 0 7.0000000 5.00000 28.6% - 0s 0 0 5.00000 0 63 7.00000 5.00000 28.6% - 0s 0 0 5.00000 0 29 7.00000 5.00000 28.6% - 0s H 0 0 6.0000000 5.00000 16.7% - 0s 0 0 5.00000 0 62 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 63 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 71 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 54 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 47 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 59 6.00000 5.00000 16.7% - 0s 0 0 5.00000 0 44 6.00000 5.00000 16.7% - 0s 0 2 5.00000 0 44 6.00000 5.00000 16.7% - 1s Cutting planes: Gomory: 1 Clique: 2 Zero half: 2 Explored 14 nodes (19210 simplex iterations) in 1.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%