Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:14:08 2013 Optimize a model with 913 rows, 68973 columns and 137863 nonzeros Presolve time: 0.10s Presolved: 913 rows, 68973 columns, 137863 nonzeros Variable types: 68890 continuous, 83 integer (83 binary) Root relaxation: objective 1.006769e+05, 2844 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 100676.861 0 3 - 100676.861 - - 0s H 0 0 102908.00000 100676.861 2.17% - 0s H 0 0 101219.00000 100676.861 0.54% - 0s 0 0 100798.511 0 2 101219.000 100798.511 0.42% - 0s 0 0 100798.511 0 3 101219.000 100798.511 0.42% - 0s 0 0 100798.511 0 2 101219.000 100798.511 0.42% - 1s 0 0 100807.220 0 3 101219.000 100807.220 0.41% - 1s 0 0 100811.027 0 2 101219.000 100811.027 0.40% - 1s 0 0 100817.540 0 4 101219.000 100817.540 0.40% - 1s 0 0 100817.601 0 3 101219.000 100817.601 0.40% - 1s 0 0 100817.601 0 3 101219.000 100817.601 0.40% - 1s 0 0 100817.601 0 3 101219.000 100817.601 0.40% - 1s 0 2 100830.299 0 3 101219.000 100830.299 0.38% - 1s H 6 4 101218.00000 100920.517 0.29% 42.2 1s H 8 6 101152.00000 100920.517 0.23% 40.1 1s H 12 6 101106.00000 100920.517 0.18% 38.3 2s * 13 7 10 101072.00000 100920.517 0.15% 36.9 2s * 19 5 10 101043.00000 100980.509 0.06% 33.6 2s * 20 4 10 101029.00000 100980.509 0.05% 32.0 2s Cutting planes: Implied bound: 69 Flow cover: 6 Explored 24 nodes (6681 simplex iterations) in 2.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.010290000000e+05, best bound 1.010209310345e+05, gap 0.0080%