Gurobi 5.0.1 (linux64) logging started Mon Nov 19 11:16:16 2012 Optimize a model with 7633 rows, 175 columns and 15266 nonzeros Presolve removed 5561 rows and 0 columns Presolve time: 0.36s Presolved: 2072 rows, 175 columns, 15626 nonzeros Variable types: 0 continuous, 175 integer (175 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 2.095994e+01, 921 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 20.95994 0 174 7.00000 20.95994 199% - 0s H 0 0 9.0000000 20.95994 133% - 0s H 0 0 10.0000000 20.95994 110% - 0s 0 0 20.59450 0 175 10.00000 20.59450 106% - 0s 0 0 20.45025 0 175 10.00000 20.45025 105% - 1s 0 0 20.41113 0 174 10.00000 20.41113 104% - 1s 0 0 20.35914 0 174 10.00000 20.35914 104% - 1s 0 0 20.30800 0 174 10.00000 20.30800 103% - 1s 0 0 20.29058 0 174 10.00000 20.29058 103% - 2s 0 0 20.28431 0 175 10.00000 20.28431 103% - 2s 0 0 20.27676 0 175 10.00000 20.27676 103% - 2s 0 0 20.26676 0 175 10.00000 20.26676 103% - 2s 0 0 20.25962 0 175 10.00000 20.25962 103% - 3s 0 0 20.25472 0 175 10.00000 20.25472 103% - 3s 0 0 20.25350 0 175 10.00000 20.25350 103% - 3s 0 0 20.25308 0 175 10.00000 20.25308 103% - 3s 0 0 20.25304 0 175 10.00000 20.25304 103% - 3s 0 2 20.25251 0 175 10.00000 20.25251 103% - 5s H 216 160 11.0000000 19.77579 79.8% 101 8s 356 240 14.65347 12 83 11.00000 19.25561 75.1% 103 10s 601 369 14.45461 18 175 11.00000 18.15588 65.1% 97.3 18s 610 375 12.02839 32 175 11.00000 18.15588 65.1% 95.9 20s 634 393 14.88085 26 85 11.00000 18.15588 65.1% 119 25s 718 443 cutoff 68 11.00000 16.67327 51.6% 153 30s 1300 483 14.65008 27 79 11.00000 15.42732 40.2% 115 35s 1521 449 12.14695 38 62 11.00000 15.13975 37.6% 108 40s 1725 405 cutoff 32 11.00000 14.87856 35.3% 103 45s 1870 411 13.85441 38 71 11.00000 14.65253 33.2% 100 50s 2103 327 13.49587 43 67 11.00000 13.70085 24.6% 98.0 55s 2616 181 12.61450 59 67 11.00000 12.79622 16.3% 86.7 60s Cutting planes: Clique: 64 Explored 2880 nodes (234308 simplex iterations) in 61.82 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%