Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:57:05 2012 Optimize a model with 3459 rows, 119 columns and 6918 nonzeros Presolve removed 2463 rows and 0 columns Presolve time: 0.13s Presolved: 996 rows, 119 columns, 7091 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.618512e+01, 633 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.18512 0 114 7.00000 16.18512 131% - 0s H 0 0 8.0000000 16.18512 102% - 0s 0 0 15.68383 0 118 8.00000 15.68383 96.0% - 0s H 0 0 9.0000000 15.68383 74.3% - 0s 0 0 15.62327 0 118 9.00000 15.62327 73.6% - 0s 0 0 15.59993 0 118 9.00000 15.59993 73.3% - 0s 0 0 15.58296 0 118 9.00000 15.58296 73.1% - 0s 0 0 15.54242 0 119 9.00000 15.54242 72.7% - 0s 0 0 15.53036 0 119 9.00000 15.53036 72.6% - 1s 0 0 15.52796 0 119 9.00000 15.52796 72.5% - 1s 0 0 15.52652 0 119 9.00000 15.52652 72.5% - 1s 0 0 15.52510 0 119 9.00000 15.52510 72.5% - 1s 0 2 15.52374 0 119 9.00000 15.52374 72.5% - 2s * 425 85 7 10.0000000 12.84811 28.5% 58.3 3s Cutting planes: Clique: 90 Explored 541 nodes (30275 simplex iterations) in 3.93 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%