Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:27:27 2013 Optimize a model with 6600 rows, 110300 columns and 235500 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 1.08s Presolved: 6500 rows, 110200 columns, 230400 nonzeros Variable types: 105200 continuous, 5000 integer (5000 binary) Root relaxation: objective 7.543716e+05, 8577 iterations, 2.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 754371.571 0 8 - 754371.571 - - 4s 0 0 754453.904 0 6 - 754453.904 - - 7s 0 0 754472.922 0 8 - 754472.922 - - 7s 0 0 754476.323 0 8 - 754476.323 - - 8s 0 0 754477.468 0 8 - 754477.468 - - 8s 0 0 754477.468 0 8 - 754477.468 - - 9s 0 0 754477.468 0 8 - 754477.468 - - 10s 0 0 754477.468 0 8 - 754477.468 - - 11s 0 0 754477.468 0 8 - 754477.468 - - 11s 0 0 754477.805 0 8 - 754477.805 - - 12s 0 0 754479.832 0 8 - 754479.832 - - 13s 0 0 754479.968 0 8 - 754479.968 - - 13s 0 0 754480.729 0 8 - 754480.729 - - 14s 0 0 754480.796 0 8 - 754480.796 - - 15s 0 0 754481.143 0 8 - 754481.143 - - 16s 0 0 754481.194 0 8 - 754481.194 - - 17s 0 0 754481.395 0 8 - 754481.395 - - 17s 0 0 754481.429 0 8 - 754481.429 - - 18s 0 0 754481.543 0 8 - 754481.543 - - 19s 0 0 754481.543 0 8 - 754481.543 - - 21s H 0 0 757599.71403 754481.543 0.41% - 23s 0 2 754481.543 0 8 757599.714 754481.543 0.41% - 26s 4 6 754772.256 2 6 757599.714 754769.728 0.37% 476 30s 10 11 756235.555 5 4 757599.714 754769.728 0.37% 404 37s 16 14 756896.907 8 2 757599.714 754769.728 0.37% 290 40s 25 14 755324.842 13 2 757599.714 754769.728 0.37% 216 45s 41 16 755440.647 28 2 757599.714 754769.728 0.37% 142 50s 58 16 755481.552 43 4 757599.714 754769.728 0.37% 112 55s 79 16 755516.768 58 2 757599.714 754769.728 0.37% 96.8 60s 98 16 755615.600 74 2 757599.714 754769.728 0.37% 84.7 65s 114 16 755749.029 88 2 757599.714 754769.728 0.37% 76.8 70s * 122 16 94 756224.67995 754769.728 0.19% 72.5 71s 140 13 755932.216 109 2 756224.680 754769.728 0.19% 65.3 75s 161 13 756055.624 130 2 756224.680 754769.728 0.19% 58.8 80s 179 13 756152.915 148 2 756224.680 754769.728 0.19% 54.4 85s 207 15 755096.581 8 2 756224.680 754769.728 0.19% 52.3 90s * 236 14 29 755729.74415 754769.728 0.13% 47.4 94s 240 14 755652.994 33 2 755729.744 754769.728 0.13% 46.6 95s H 244 13 755705.05910 754769.728 0.12% 45.9 95s 274 14 755674.530 67 2 755705.059 754769.728 0.12% 41.1 100s * 287 15 79 755679.58081 754769.728 0.12% 39.4 101s 305 10 755202.770 4 2 755679.581 755202.770 0.06% 44.1 105s Cutting planes: Implied bound: 46 Flow cover: 28 Explored 346 nodes (30810 simplex iterations) in 108.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.556795808113e+05, best bound 7.556447027981e+05, gap 0.0046%