Gurobi 5.0.1 (linux64) logging started Fri Jan 18 08:16:30 2013 Optimize a model with 1700 rows, 75650 columns and 651700 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 1.27s Presolved: 1650 rows, 75600 columns, 601650 nonzeros Variable types: 75100 continuous, 500 integer (500 binary) Root relaxation: objective 1.959342e+05, 2699 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 - - 1s 0 0 195936.103 0 9 - 195936.103 - - 2s 0 0 195936.237 0 10 - 195936.237 - - 2s 0 0 195936.237 0 10 - 195936.237 - - 3s 0 0 195936.237 0 10 - 195936.237 - - 3s 0 0 195936.237 0 10 - 195936.237 - - 4s 0 0 195936.237 0 10 - 195936.237 - - 4s 0 0 195936.237 0 10 - 195936.237 - - 5s 0 0 195936.237 0 10 - 195936.237 - - 5s 0 2 195938.172 0 10 - 195938.172 - - 12s 20 22 197869.617 16 6 - 195961.734 - 68.9 15s 91 93 198053.159 83 1 - 195961.734 - 20.5 20s 170 172 198075.108 160 1 - 195961.734 - 12.3 25s * 200 82 190 198079.69689 195961.734 1.07% 10.7 25s * 249 24 46 196596.90814 195987.891 0.31% 11.8 27s * 281 22 28 196588.54354 196156.910 0.22% 12.7 27s * 293 12 10 196570.65000 196317.988 0.13% 13.3 28s H 367 18 196569.14379 196519.675 0.03% 13.5 29s * 378 25 44 196568.16899 196519.675 0.02% 13.2 29s Cutting planes: Flow cover: 9 Explored 384 nodes (8643 simplex iterations) in 29.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965681689930e+05, best bound 1.965524679625e+05, gap 0.0080%