Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:51 2012 Optimize a model with 1208 rows, 69 columns and 2416 nonzeros Presolve removed 867 rows and 0 columns Presolve time: 0.02s Presolved: 341 rows, 69 columns, 2136 nonzeros Variable types: 0 continuous, 69 integer (69 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.090879e+01, 171 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.90879 0 58 7.00000 10.90879 55.8% - 0s 0 0 10.41011 0 66 7.00000 10.41011 48.7% - 0s 0 0 10.40051 0 67 7.00000 10.40051 48.6% - 0s 0 0 10.36373 0 66 7.00000 10.36373 48.1% - 0s 0 0 10.32850 0 68 7.00000 10.32850 47.5% - 0s 0 0 10.32193 0 69 7.00000 10.32193 47.5% - 0s 0 0 10.27965 0 68 7.00000 10.27965 46.9% - 0s 0 0 10.26862 0 68 7.00000 10.26862 46.7% - 0s 0 0 10.26484 0 69 7.00000 10.26484 46.6% - 0s 0 0 10.26234 0 69 7.00000 10.26234 46.6% - 0s 0 0 10.26116 0 69 7.00000 10.26116 46.6% - 0s 0 2 10.25176 0 69 7.00000 10.25176 46.5% - 0s Cutting planes: Clique: 50 Zero half: 2 Explored 67 nodes (2912 simplex iterations) in 0.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%