Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:07:10 2012 Optimize a model with 7067 rows, 992 columns and 22039 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 7096 rows, 990 columns, 25806 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 3.468354e+00, 6844 iterations, 0.46 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.46835 0 846 31.00000 3.46835 88.8% - 1s H 0 0 29.0000000 3.46835 88.0% - 1s 0 0 6.00000 0 131 29.00000 6.00000 79.3% - 2s H 0 0 25.0000000 6.00000 76.0% - 2s H 0 0 9.0000000 6.00000 33.3% - 2s 0 0 6.00000 0 136 9.00000 6.00000 33.3% - 2s H 0 0 8.0000000 6.00000 25.0% - 2s H 0 0 7.0000000 6.00000 14.3% - 2s 0 0 6.00000 0 91 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 131 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 147 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 123 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 133 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 95 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 122 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 126 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 95 7.00000 6.00000 14.3% - 3s 0 2 6.00000 0 95 7.00000 6.00000 14.3% - 3s Cutting planes: Gomory: 1 Clique: 24 Zero half: 14 Explored 17 nodes (24012 simplex iterations) in 3.71 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%