Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:39 2013 Optimize a model with 451 rows, 16851 columns and 33661 nonzeros Presolve time: 0.02s Presolved: 451 rows, 16851 columns, 33661 nonzeros Variable types: 16810 continuous, 41 integer (41 binary) Root relaxation: objective 4.373044e+04, 721 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 43730.4355 0 7 - 43730.4355 - - 0s H 0 0 45037.000000 43730.4355 2.90% - 0s 0 0 44027.1709 0 5 45037.0000 44027.1709 2.24% - 0s H 0 0 45032.497174 44027.1709 2.23% - 0s H 0 0 44851.000000 44027.1709 1.84% - 0s 0 0 44038.6828 0 4 44851.0000 44038.6828 1.81% - 0s H 0 0 44807.000000 44038.6828 1.71% - 0s 0 0 44050.0366 0 5 44807.0000 44050.0366 1.69% - 0s H 0 0 44481.000000 44050.0366 0.97% - 0s 0 0 44060.1285 0 5 44481.0000 44060.1285 0.95% - 0s 0 0 44062.6398 0 6 44481.0000 44062.6398 0.94% - 0s 0 0 44063.3889 0 6 44481.0000 44063.3889 0.94% - 0s 0 0 44063.6854 0 4 44481.0000 44063.6854 0.94% - 0s 0 0 44063.8497 0 6 44481.0000 44063.8497 0.94% - 0s H 0 0 44281.000000 44063.8497 0.49% - 0s 0 0 44063.8497 0 7 44281.0000 44063.8497 0.49% - 0s 0 0 44099.8716 0 4 44281.0000 44099.8716 0.41% - 0s 0 0 44103.9428 0 5 44281.0000 44103.9428 0.40% - 0s 0 0 44108.5846 0 5 44281.0000 44108.5846 0.39% - 0s 0 0 44111.1836 0 6 44281.0000 44111.1836 0.38% - 0s 0 0 44112.6605 0 6 44281.0000 44112.6605 0.38% - 0s 0 0 44112.9949 0 4 44281.0000 44112.9949 0.38% - 0s 0 0 44113.1593 0 6 44281.0000 44113.1593 0.38% - 0s H 0 0 44166.000000 44113.1593 0.12% - 0s 0 0 44115.9018 0 5 44166.0000 44115.9018 0.11% - 0s 0 0 44116.2132 0 5 44166.0000 44116.2132 0.11% - 0s 0 0 44116.3303 0 5 44166.0000 44116.3303 0.11% - 0s 0 0 44149.5942 0 2 44166.0000 44149.5942 0.04% - 0s 0 0 44150.6839 0 2 44166.0000 44150.6839 0.03% - 0s 0 0 44164.5517 0 1 44166.0000 44164.5517 0.00% - 0s Cutting planes: Implied bound: 55 Flow cover: 2 Explored 0 nodes (1861 simplex iterations) in 0.73 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.416600000000e+04, best bound 4.416455172414e+04, gap 0.0033%