Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:15:36 2012 Optimize a model with 4541 rows, 136 columns and 9082 nonzeros Presolve removed 3245 rows and 0 columns Presolve time: 0.17s Presolved: 1296 rows, 136 columns, 9118 nonzeros Variable types: 0 continuous, 136 integer (136 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.785328e+01, 641 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.85328 0 133 7.00000 17.85328 155% - 0s H 0 0 9.0000000 17.85328 98.4% - 0s 0 0 17.29916 0 135 9.00000 17.29916 92.2% - 0s 0 0 17.14329 0 134 9.00000 17.14329 90.5% - 0s 0 0 17.07495 0 135 9.00000 17.07495 89.7% - 0s 0 0 17.04639 0 135 9.00000 17.04639 89.4% - 0s 0 0 17.02971 0 135 9.00000 17.02971 89.2% - 1s 0 0 17.01569 0 135 9.00000 17.01569 89.1% - 1s 0 0 17.01311 0 135 9.00000 17.01311 89.0% - 1s 0 0 17.01182 0 135 9.00000 17.01182 89.0% - 1s 0 2 17.00843 0 135 9.00000 17.00843 89.0% - 2s H 297 156 10.0000000 15.60097 56.0% 77.5 4s 413 172 11.40912 23 54 10.00000 14.41179 44.1% 80.2 5s Cutting planes: Clique: 153 Explored 776 nodes (55982 simplex iterations) in 6.76 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%