Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:23:09 2012 Optimize a model with 4874 rows, 139 columns and 9748 nonzeros Presolve removed 3504 rows and 0 columns Presolve time: 0.18s Presolved: 1370 rows, 139 columns, 9824 nonzeros Variable types: 0 continuous, 139 integer (139 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.795803e+01, 618 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.95803 0 136 6.00000 17.95803 199% - 0s H 0 0 9.0000000 17.95803 100% - 0s 0 0 17.23629 0 138 9.00000 17.23629 91.5% - 0s 0 0 17.16585 0 138 9.00000 17.16585 90.7% - 0s 0 0 17.11266 0 139 9.00000 17.11266 90.1% - 0s H 0 0 10.0000000 17.11266 71.1% - 0s 0 0 17.08478 0 137 10.00000 17.08478 70.8% - 1s 0 0 17.03700 0 139 10.00000 17.03700 70.4% - 1s 0 0 16.99210 0 138 10.00000 16.99210 69.9% - 1s 0 0 16.96809 0 139 10.00000 16.96809 69.7% - 1s 0 0 16.94996 0 139 10.00000 16.94996 69.5% - 1s 0 0 16.94645 0 139 10.00000 16.94645 69.5% - 2s 0 0 16.94514 0 139 10.00000 16.94514 69.5% - 2s 0 0 16.94339 0 139 10.00000 16.94339 69.4% - 2s 0 0 16.94298 0 139 10.00000 16.94298 69.4% - 2s 0 2 16.94210 0 139 10.00000 16.94210 69.4% - 3s 226 133 13.07347 11 71 10.00000 15.51098 55.1% 94.5 5s Cutting planes: Clique: 201 Explored 639 nodes (52341 simplex iterations) in 7.63 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%