Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:19:56 2012 Optimize a model with 4740 rows, 138 columns and 9480 nonzeros Presolve removed 3446 rows and 0 columns Presolve time: 0.17s Presolved: 1294 rows, 138 columns, 9191 nonzeros Variable types: 0 continuous, 138 integer (138 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.803145e+01, 671 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.03145 0 131 8.00000 18.03145 125% - 0s 0 0 17.32649 0 136 8.00000 17.32649 117% - 0s H 0 0 9.0000000 17.32649 92.5% - 0s 0 0 17.20654 0 138 9.00000 17.20654 91.2% - 0s 0 0 17.16591 0 137 9.00000 17.16591 90.7% - 0s 0 0 17.12851 0 137 9.00000 17.12851 90.3% - 1s 0 0 17.10314 0 138 9.00000 17.10314 90.0% - 1s 0 0 17.09309 0 136 9.00000 17.09309 89.9% - 1s 0 0 17.06808 0 137 9.00000 17.06808 89.6% - 1s 0 0 17.05513 0 137 9.00000 17.05513 89.5% - 1s 0 0 17.05346 0 138 9.00000 17.05346 89.5% - 2s 0 0 17.05234 0 137 9.00000 17.05234 89.5% - 2s 0 0 17.05230 0 138 9.00000 17.05230 89.5% - 2s 0 0 17.05214 0 138 9.00000 17.05214 89.5% - 2s 0 2 17.05050 0 138 9.00000 17.05050 89.5% - 3s 336 210 12.83078 13 71 9.00000 15.56875 73.0% 69.9 5s H 446 195 10.0000000 15.17158 51.7% 66.7 5s Cutting planes: Clique: 183 Explored 857 nodes (58363 simplex iterations) in 8.23 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%