Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:17:27 2012 Optimize a model with 4670 rows, 136 columns and 9340 nonzeros Presolve removed 3355 rows and 0 columns Presolve time: 0.18s Presolved: 1315 rows, 136 columns, 9397 nonzeros Variable types: 0 continuous, 136 integer (136 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.745399e+01, 673 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.45399 0 133 7.00000 17.45399 149% - 0s H 0 0 8.0000000 17.45399 118% - 0s 0 0 16.85108 0 136 8.00000 16.85108 111% - 0s 0 0 16.69806 0 134 8.00000 16.69806 109% - 0s H 0 0 9.0000000 16.69806 85.5% - 0s 0 0 16.66447 0 134 9.00000 16.66447 85.2% - 0s 0 0 16.63693 0 135 9.00000 16.63693 84.9% - 1s 0 0 16.61746 0 135 9.00000 16.61746 84.6% - 1s 0 0 16.61136 0 135 9.00000 16.61136 84.6% - 1s 0 0 16.60949 0 135 9.00000 16.60949 84.5% - 1s 0 0 16.60907 0 135 9.00000 16.60907 84.5% - 1s 0 0 16.60891 0 135 9.00000 16.60891 84.5% - 2s 0 2 16.60594 0 135 9.00000 16.60594 84.5% - 2s 381 219 11.87366 19 60 9.00000 15.01568 66.8% 74.0 5s H 570 197 10.0000000 13.59328 35.9% 69.3 6s Cutting planes: Clique: 161 Explored 818 nodes (53632 simplex iterations) in 7.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%