Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:10:00 2013 Optimize a model with 1650 rows, 225150 columns and 450150 nonzeros Presolve time: 0.54s Presolved: 1650 rows, 225150 columns, 450150 nonzeros Variable types: 225000 continuous, 150 integer (150 binary) Root relaxation: objective 2.829989e+05, 8094 iterations, 0.59 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 282998.926 0 7 - 282998.926 - - 1s H 0 0 304186.00000 282998.926 6.97% - 2s 0 0 283178.045 0 6 304186.000 283178.045 6.91% - 3s 0 0 283212.783 0 6 304186.000 283212.783 6.89% - 3s 0 0 283236.270 0 6 304186.000 283236.270 6.89% - 4s H 0 0 302046.00000 283236.270 6.23% - 4s 0 0 283241.277 0 6 302046.000 283241.277 6.23% - 5s H 0 0 301821.00000 283241.277 6.16% - 5s 0 0 283241.277 0 6 301821.000 283241.277 6.16% - 5s H 0 0 301619.00000 283241.277 6.09% - 5s 0 0 283242.653 0 5 301619.000 283242.653 6.09% - 6s H 0 0 301498.00000 283242.653 6.05% - 6s 0 0 283242.653 0 5 301498.000 283242.653 6.05% - 6s H 0 0 301406.00000 283242.653 6.03% - 6s 0 0 283244.474 0 4 301406.000 283244.474 6.03% - 7s H 0 0 298472.95801 283244.474 5.10% - 7s H 0 0 296659.00000 283244.474 4.52% - 7s 0 0 283245.244 0 4 296659.000 283245.244 4.52% - 7s H 0 0 296643.00000 283245.244 4.52% - 7s H 0 0 293369.00000 283245.244 3.45% - 10s 0 2 283248.848 0 4 293369.000 283248.848 3.45% - 10s H 3 3 288302.00000 283383.028 1.71% 162 11s H 5 5 285456.00000 283383.028 0.73% 150 11s H 14 12 284798.00000 283383.028 0.50% 83.3 12s H 19 16 284626.00000 283383.028 0.44% 65.9 13s H 22 16 284255.00000 283383.028 0.31% 59.3 13s H 24 16 284226.00000 283383.028 0.30% 56.0 13s * 25 15 25 284164.00000 283383.028 0.27% 54.9 13s 33 19 283993.068 6 3 284164.000 283449.646 0.25% 83.5 15s * 42 20 14 284137.00000 283449.646 0.24% 74.9 15s H 50 13 283807.00000 283505.253 0.11% 89.8 16s H 51 14 283793.00000 283505.253 0.10% 88.9 16s H 51 14 283777.00000 283505.253 0.10% 88.9 17s * 67 13 8 283776.00000 283523.447 0.09% 102 18s 76 14 283617.295 6 3 283776.000 283559.511 0.08% 112 20s * 77 4 7 283677.00000 283559.511 0.04% 112 20s Cutting planes: Implied bound: 266 Flow cover: 8 Explored 84 nodes (17931 simplex iterations) in 20.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.836770000000e+05, best bound 2.836770000000e+05, gap 0.0%