Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:04:42 2013 Optimize a model with 2530 rows, 529230 columns and 1058230 nonzeros Presolve time: 4.32s Presolved: 2530 rows, 529230 columns, 1058230 nonzeros Variable types: 529000 continuous, 230 integer (230 binary) Root relaxation: objective 4.265139e+05, 16228 iterations, 3.22 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 426513.919 0 5 - 426513.919 - - 8s H 0 0 442028.00000 426513.919 3.51% - 9s H 0 0 430850.00000 426513.919 1.01% - 11s 0 0 426807.608 0 4 430850.000 426807.608 0.94% - 12s 0 0 426807.608 0 5 430850.000 426807.608 0.94% - 16s 0 0 426807.608 0 4 430850.000 426807.608 0.94% - 18s 0 0 426833.587 0 5 430850.000 426833.587 0.93% - 19s 0 0 426844.257 0 4 430850.000 426844.257 0.93% - 19s 0 0 426844.388 0 4 430850.000 426844.388 0.93% - 20s 0 0 426846.343 0 4 430850.000 426846.343 0.93% - 21s 0 0 426848.601 0 5 430850.000 426848.601 0.93% - 21s 0 0 426850.799 0 3 430850.000 426850.799 0.93% - 22s 0 0 426851.447 0 4 430850.000 426851.447 0.93% - 22s 0 0 426853.765 0 3 430850.000 426853.765 0.93% - 23s 0 0 426853.795 0 3 430850.000 426853.795 0.93% - 23s 0 0 426854.459 0 3 430850.000 426854.459 0.93% - 24s 0 0 426854.459 0 3 430850.000 426854.459 0.93% - 25s 0 2 426855.042 0 3 430850.000 426855.042 0.93% - 27s H 2 2 428843.32587 426882.780 0.46% 44.0 28s H 3 3 428606.33333 426886.722 0.40% 47.7 28s 9 10 427007.613 9 2 428606.333 426988.273 0.38% 68.6 30s H 11 9 427992.00000 426988.273 0.23% 59.8 30s H 15 9 427292.00000 426988.273 0.07% 64.6 31s * 17 6 16 427106.00000 426988.273 0.03% 59.4 31s Cutting planes: Implied bound: 111 Flow cover: 6 Explored 21 nodes (29095 simplex iterations) in 31.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.271060000000e+05, best bound 4.270917799132e+05, gap 0.0033%