Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:18:15 2012 Optimize a model with 4725 rows, 137 columns and 9450 nonzeros Presolve removed 3396 rows and 0 columns Presolve time: 0.17s Presolved: 1329 rows, 137 columns, 9455 nonzeros Variable types: 0 continuous, 137 integer (137 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.768754e+01, 624 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.68754 0 136 6.00000 17.68754 195% - 0s H 0 0 8.0000000 17.68754 121% - 0s 0 0 17.25430 0 136 8.00000 17.25430 116% - 0s H 0 0 9.0000000 17.25430 91.7% - 0s 0 0 17.07950 0 137 9.00000 17.07950 89.8% - 0s 0 0 16.93155 0 136 9.00000 16.93155 88.1% - 0s 0 0 16.87265 0 135 9.00000 16.87265 87.5% - 1s H 0 0 10.0000000 16.87265 68.7% - 1s 0 0 16.80878 0 136 10.00000 16.80878 68.1% - 1s 0 0 16.77474 0 136 10.00000 16.77474 67.7% - 1s 0 0 16.75757 0 137 10.00000 16.75757 67.6% - 1s 0 0 16.74886 0 137 10.00000 16.74886 67.5% - 1s 0 0 16.74655 0 137 10.00000 16.74655 67.5% - 2s 0 0 16.74512 0 137 10.00000 16.74512 67.5% - 2s 0 0 16.74435 0 137 10.00000 16.74435 67.4% - 2s 0 0 16.73040 0 137 10.00000 16.73040 67.3% - 2s 0 0 16.72562 0 137 10.00000 16.72562 67.3% - 2s 0 0 16.72355 0 136 10.00000 16.72355 67.2% - 3s 0 0 16.72330 0 137 10.00000 16.72330 67.2% - 3s 0 0 16.72327 0 137 10.00000 16.72327 67.2% - 3s 0 2 16.72301 0 137 10.00000 16.72301 67.2% - 3s 110 80 12.47494 8 66 10.00000 16.22547 62.3% 106 5s Cutting planes: Clique: 150 Explored 543 nodes (45760 simplex iterations) in 7.86 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%