Gurobi 5.0.1 (linux64) logging started Fri Jan 18 06:06:55 2013 Optimize a model with 1600 rows, 50600 columns and 326550 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.57s Presolved: 1550 rows, 50550 columns, 301500 nonzeros Variable types: 50100 continuous, 450 integer (450 binary) Root relaxation: objective 1.959342e+05, 2995 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 9 - 195934.242 - - 0s 0 0 195937.965 0 9 - 195937.965 - - 1s 0 0 195938.230 0 10 - 195938.230 - - 1s 0 0 195938.230 0 10 - 195938.230 - - 1s 0 0 195938.230 0 10 - 195938.230 - - 2s 0 0 195938.230 0 10 - 195938.230 - - 2s 0 0 195938.230 0 10 - 195938.230 - - 2s 0 0 195938.230 0 10 - 195938.230 - - 3s 0 0 195938.230 0 10 - 195938.230 - - 3s 0 2 195942.107 0 10 - 195942.107 - - 8s 11 13 197682.201 10 6 - 195963.555 - 88.6 10s 104 106 198058.290 96 1 - 195963.555 - 16.7 15s * 181 63 171 198076.59826 195963.555 1.07% 10.7 18s H 213 18 196603.33047 195988.762 0.31% 12.6 18s * 228 25 43 196598.31629 195988.762 0.31% 12.0 19s * 230 24 44 196597.98768 195988.762 0.31% 11.9 19s * 262 26 29 196588.54354 196112.640 0.24% 12.9 19s 281 31 196588.041 16 3 196588.544 196157.399 0.22% 13.2 20s * 294 17 10 196570.65000 196318.483 0.13% 13.9 20s * 374 27 42 196567.52654 196519.675 0.02% 13.9 21s * 375 25 42 196565.98733 196519.675 0.02% 13.9 21s Cutting planes: Flow cover: 8 Explored 393 nodes (9225 simplex iterations) in 21.58 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965659873340e+05, best bound 1.965480650863e+05, gap 0.0091%