Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:25:48 2012 Optimize a model with 4915 rows, 141 columns and 9830 nonzeros Presolve removed 3583 rows and 0 columns Presolve time: 0.18s Presolved: 1332 rows, 141 columns, 9438 nonzeros Variable types: 0 continuous, 141 integer (141 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.839264e+01, 616 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.39264 0 139 8.00000 18.39264 130% - 0s H 0 0 9.0000000 18.39264 104% - 0s 0 0 17.79514 0 141 9.00000 17.79514 97.7% - 0s 0 0 17.71409 0 141 9.00000 17.71409 96.8% - 0s 0 0 17.66515 0 141 9.00000 17.66515 96.3% - 0s 0 0 17.64047 0 141 9.00000 17.64047 96.0% - 1s 0 0 17.63436 0 141 9.00000 17.63436 95.9% - 1s 0 0 17.63055 0 141 9.00000 17.63055 95.9% - 1s 0 0 17.63014 0 141 9.00000 17.63014 95.9% - 1s 0 0 17.63007 0 141 9.00000 17.63007 95.9% - 1s H 0 0 10.0000000 17.63007 76.3% - 1s 0 2 17.62827 0 141 10.00000 17.62827 76.3% - 2s 383 173 11.19552 23 61 10.00000 15.02623 50.3% 80.2 5s H 589 136 11.0000000 13.91594 26.5% 74.1 6s Cutting planes: Clique: 94 Explored 757 nodes (52326 simplex iterations) in 6.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%