Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:06:47 2012 Optimize a model with 7005 rows, 992 columns and 21853 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 7034 rows, 990 columns, 25856 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 3.468354e+00, 6795 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 0 830 31.00000 3.46835 88.8% - 1s H 0 0 28.0000000 3.46835 87.6% - 1s 0 0 6.00000 0 131 28.00000 6.00000 78.6% - 2s H 0 0 22.0000000 6.00000 72.7% - 2s H 0 0 10.0000000 6.00000 40.0% - 2s 0 0 6.00000 0 148 10.00000 6.00000 40.0% - 2s H 0 0 9.0000000 6.00000 33.3% - 2s 0 0 6.00000 0 107 9.00000 6.00000 33.3% - 3s H 0 0 8.0000000 6.00000 25.0% - 3s 0 0 6.00000 0 117 8.00000 6.00000 25.0% - 4s 0 0 6.00000 0 114 8.00000 6.00000 25.0% - 5s 0 0 6.00000 0 120 8.00000 6.00000 25.0% - 5s 0 0 6.00000 0 136 8.00000 6.00000 25.0% - 7s 0 0 6.00000 0 127 8.00000 6.00000 25.0% - 8s 0 0 6.00000 0 121 8.00000 6.00000 25.0% - 9s 0 0 6.00000 0 112 8.00000 6.00000 25.0% - 10s H 0 0 7.0000000 6.00000 14.3% - 10s 0 0 6.00000 0 100 7.00000 6.00000 14.3% - 10s 0 0 6.00000 0 101 7.00000 6.00000 14.3% - 11s 0 0 6.00000 0 128 7.00000 6.00000 14.3% - 11s 0 0 6.00000 0 100 7.00000 6.00000 14.3% - 11s 0 0 6.00000 0 129 7.00000 6.00000 14.3% - 11s 0 0 6.00000 0 75 7.00000 6.00000 14.3% - 11s 0 0 6.00000 0 102 7.00000 6.00000 14.3% - 11s 0 0 6.00000 0 113 7.00000 6.00000 14.3% - 11s 0 0 6.00000 0 113 7.00000 6.00000 14.3% - 11s 0 2 6.00000 0 113 7.00000 6.00000 14.3% - 11s Cutting planes: Clique: 13 Zero half: 3 Explored 13 nodes (49707 simplex iterations) in 11.75 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%