Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:15:21 2012 Optimize a model with 4564 rows, 135 columns and 9128 nonzeros Presolve removed 3270 rows and 0 columns Presolve time: 0.17s Presolved: 1294 rows, 135 columns, 9169 nonzeros Variable types: 0 continuous, 135 integer (135 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.742231e+01, 598 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.42231 0 135 7.00000 17.42231 149% - 0s H 0 0 8.0000000 17.42231 118% - 0s 0 0 17.07370 0 135 8.00000 17.07370 113% - 0s 0 0 16.97845 0 135 8.00000 16.97845 112% - 0s 0 0 16.94086 0 135 8.00000 16.94086 112% - 0s H 0 0 9.0000000 16.94086 88.2% - 0s 0 0 16.92002 0 135 9.00000 16.92002 88.0% - 1s 0 0 16.90269 0 135 9.00000 16.90269 87.8% - 1s 0 0 16.90256 0 135 9.00000 16.90256 87.8% - 1s 0 2 16.90108 0 135 9.00000 16.90108 87.8% - 2s 527 251 10.01532 32 48 9.00000 13.72328 52.5% 70.9 5s 609 271 13.45457 14 134 9.00000 13.45457 49.5% 68.4 10s * 1165 204 18 10.0000000 12.76898 27.7% 72.7 14s 1276 162 11.29348 37 56 10.00000 12.32973 23.3% 70.3 15s Cutting planes: Clique: 32 Explored 1512 nodes (97655 simplex iterations) in 15.62 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%