Gurobi 5.0.1 (linux64) logging started Mon Nov 19 12:41:03 2012 Optimize a model with 8143 rows, 181 columns and 16286 nonzeros Presolve removed 5915 rows and 0 columns Presolve time: 0.38s Presolved: 2228 rows, 181 columns, 16623 nonzeros Variable types: 0 continuous, 181 integer (181 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 2.167107e+01, 1010 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 21.67107 0 179 8.00000 21.67107 171% - 0s H 0 0 9.0000000 21.67107 141% - 0s 0 0 21.00655 0 180 9.00000 21.00655 133% - 0s 0 0 20.89585 0 179 9.00000 20.89585 132% - 1s 0 0 20.75080 0 179 9.00000 20.75080 131% - 1s 0 0 20.72291 0 179 9.00000 20.72291 130% - 1s 0 0 20.71202 0 180 9.00000 20.71202 130% - 1s 0 0 20.69703 0 180 9.00000 20.69703 130% - 2s 0 0 20.69445 0 180 9.00000 20.69445 130% - 2s H 0 0 10.0000000 20.69445 107% - 2s 0 0 20.65808 0 181 10.00000 20.65808 107% - 2s 0 0 20.65089 0 181 10.00000 20.65089 107% - 2s 0 0 20.63460 0 181 10.00000 20.63460 106% - 3s 0 0 20.62400 0 179 10.00000 20.62400 106% - 3s 0 0 20.61898 0 180 10.00000 20.61898 106% - 3s 0 0 20.61655 0 180 10.00000 20.61655 106% - 3s 0 0 20.61609 0 180 10.00000 20.61609 106% - 4s 0 0 20.61601 0 180 10.00000 20.61601 106% - 4s 0 0 20.61587 0 180 10.00000 20.61587 106% - 4s 0 2 20.61315 0 180 10.00000 20.61315 106% - 5s 254 214 16.61853 5 91 10.00000 19.98249 100% 110 10s 521 386 11.23909 22 44 10.00000 19.00327 90.0% 97.2 15s H 600 386 11.0000000 18.74232 70.4% 95.1 19s 601 387 14.97505 15 180 11.00000 18.74232 70.4% 95.0 20s 608 392 14.88519 58 180 11.00000 18.74232 70.4% 93.9 25s 615 396 14.34824 18 181 11.00000 18.74232 70.4% 92.8 30s 620 402 18.74232 15 179 11.00000 18.74232 70.4% 98.0 35s 672 436 17.78617 41 148 11.00000 17.82075 62.0% 136 40s 816 458 13.34852 19 53 11.00000 16.99210 54.5% 153 45s 1204 492 12.41149 20 48 11.00000 15.93462 44.9% 123 50s 1454 484 cutoff 30 11.00000 15.66762 42.4% 112 55s 1605 473 13.60889 43 67 11.00000 15.45295 40.5% 108 60s 1944 488 12.61459 34 50 11.00000 15.18930 38.1% 98.9 65s 2266 518 12.49124 31 43 11.00000 14.70564 33.7% 94.4 70s 2552 488 12.16886 46 40 11.00000 14.12971 28.5% 92.0 75s 3007 390 cutoff 39 11.00000 13.25282 20.5% 86.4 80s Cutting planes: Gomory: 7 Clique: 78 Zero half: 1 Explored 3563 nodes (277660 simplex iterations) in 82.86 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%