Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:54:14 2013 Optimize a model with 1700 rows, 128000 columns and 1351050 nonzeros Presolve removed 50 rows and 2450 columns Presolve time: 4.20s Presolved: 1650 rows, 125550 columns, 1251050 nonzeros Variable types: 125050 continuous, 500 integer (500 binary) Root relaxation: objective 2.208160e+05, 2865 iterations, 0.34 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 32 - 220815.985 - - 5s 0 0 220818.136 0 32 - 220818.136 - - 7s 0 0 220818.862 0 32 - 220818.862 - - 7s 0 0 220818.920 0 31 - 220818.920 - - 8s 0 0 220819.208 0 32 - 220819.208 - - 8s 0 0 220819.284 0 31 - 220819.284 - - 9s 0 0 220819.480 0 32 - 220819.480 - - 10s 0 0 220819.621 0 31 - 220819.621 - - 10s 0 0 220819.647 0 31 - 220819.647 - - 11s 0 0 220819.703 0 30 - 220819.703 - - 12s 0 0 220819.714 0 32 - 220819.714 - - 12s 0 0 220819.714 0 32 - 220819.714 - - 15s 0 2 220819.923 0 32 - 220819.923 - - 34s 12 14 221110.497 11 14 - 220829.684 - 59.0 35s 69 71 221531.186 53 11 - 220829.684 - 20.6 40s * 137 85 118 221550.88099 220829.684 0.33% 11.5 42s 185 114 221505.943 40 8 221550.881 220867.460 0.31% 11.8 45s 259 128 221386.280 23 15 221550.881 220988.166 0.25% 13.5 50s * 353 145 112 221501.95292 220988.166 0.23% 11.1 52s * 382 78 36 221476.99883 221026.241 0.20% 11.2 54s 396 78 221357.058 21 8 221476.999 221054.933 0.19% 11.4 55s 534 101 221368.188 7 7 221476.999 221188.029 0.13% 13.9 60s 601 115 221456.240 24 32 221476.999 221207.393 0.12% 13.8 68s 603 116 221408.662 29 24 221476.999 221207.393 0.12% 13.8 70s 610 121 221471.230 29 24 221476.999 221207.393 0.12% 13.6 76s 618 122 221308.941 20 8 221476.999 221308.941 0.08% 23.8 80s Cutting planes: Flow cover: 11 Explored 647 nodes (19511 simplex iterations) in 83.49 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214769988341e+05, best bound 2.214763437974e+05, gap 0.0003%