Gurobi 5.0.1 (linux64) logging started Mon Nov 19 10:39:58 2012 Optimize a model with 7377 rows, 172 columns and 14754 nonzeros Presolve removed 5317 rows and 0 columns Presolve time: 0.34s Presolved: 2060 rows, 172 columns, 15294 nonzeros Variable types: 0 continuous, 172 integer (172 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 2.098016e+01, 840 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 20.98016 0 172 7.00000 20.98016 200% - 0s H 0 0 8.0000000 20.98016 162% - 0s 0 0 20.38929 0 171 8.00000 20.38929 155% - 0s H 0 0 9.0000000 20.38929 127% - 0s 0 0 20.28618 0 171 9.00000 20.28618 125% - 1s 0 0 20.23027 0 171 9.00000 20.23027 125% - 1s 0 0 20.21354 0 171 9.00000 20.21354 125% - 1s 0 0 20.19762 0 172 9.00000 20.19762 124% - 1s 0 0 20.17581 0 172 9.00000 20.17581 124% - 2s 0 0 20.16421 0 172 9.00000 20.16421 124% - 2s 0 0 20.16232 0 172 9.00000 20.16232 124% - 2s 0 0 20.16009 0 172 9.00000 20.16009 124% - 2s 0 0 20.15976 0 172 9.00000 20.15976 124% - 2s 0 0 20.15963 0 172 9.00000 20.15963 124% - 3s 0 0 20.15963 0 172 9.00000 20.15963 124% - 3s 0 2 20.15928 0 172 9.00000 20.15928 124% - 4s 27 29 17.07471 27 144 9.00000 20.15767 124% 153 5s H 189 150 10.0000000 19.82949 98.3% 107 6s 424 310 15.38982 11 91 10.00000 18.82327 88.2% 98.0 10s 601 430 13.29450 23 172 10.00000 18.26764 82.7% 94.0 16s 609 437 18.26764 11 170 10.00000 18.26764 82.7% 94.9 20s 654 467 14.42952 33 78 10.00000 17.80081 78.0% 127 25s 836 500 12.51318 19 49 10.00000 15.62163 56.2% 145 30s 1400 593 12.59574 13 41 10.00000 15.21832 52.2% 108 35s 1729 611 12.07162 15 45 10.00000 14.95072 49.5% 95.7 40s 2006 630 11.91750 21 45 10.00000 14.69371 46.9% 88.9 45s 2544 756 12.14828 32 42 10.00000 14.25565 42.6% 80.0 50s 3157 857 12.80799 33 61 10.00000 13.67560 36.8% 74.2 55s 3643 858 11.06399 37 40 10.00000 13.14001 31.4% 71.9 60s * 3685 405 18 11.0000000 13.01113 18.3% 71.7 60s Cutting planes: Clique: 57 Explored 4209 nodes (275732 simplex iterations) in 62.70 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%