Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:59:35 2013 Optimize a model with 11400 rows, 110200 columns and 240100 nonzeros Presolve removed 300 rows and 200 columns Presolve time: 0.82s Presolved: 11100 rows, 110000 columns, 229800 nonzeros Variable types: 105100 continuous, 4900 integer (4900 binary) Root relaxation: objective 8.654105e+05, 19662 iterations, 3.22 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 2 - 865410.545 - - 4s 0 0 865566.174 0 4 - 865566.174 - - 5s 0 0 865627.465 0 4 - 865627.465 - - 5s 0 0 865666.718 0 4 - 865666.718 - - 5s 0 0 865677.300 0 2 - 865677.300 - - 6s 0 0 865678.966 0 4 - 865678.966 - - 6s 0 0 865682.047 0 5 - 865682.047 - - 7s 0 0 865684.598 0 4 - 865684.598 - - 7s 0 0 865685.814 0 4 - 865685.814 - - 7s 0 0 865686.949 0 2 - 865686.949 - - 8s 0 0 865688.161 0 4 - 865688.161 - - 8s 0 0 865688.758 0 4 - 865688.758 - - 9s 0 0 865688.884 0 4 - 865688.884 - - 9s 0 2 865690.269 0 4 - 865690.269 - - 17s 4 6 866097.121 4 4 - 866057.315 - 187 20s 15 17 866587.726 15 1 - 866057.315 - 128 25s 29 31 866730.889 29 2 - 866057.315 - 95.2 30s 50 52 866917.721 50 1 - 866057.315 - 77.7 35s 68 70 867026.500 68 1 - 866057.315 - 71.3 40s 86 88 867106.907 86 1 - 866057.315 - 62.2 45s 107 109 867184.260 107 3 - 866057.315 - 57.7 50s 131 133 867281.455 130 2 - 866057.315 - 56.3 55s H 142 49 867761.12755 866057.315 0.20% 54.0 57s H 142 49 867750.41062 866057.315 0.20% 54.0 57s 172 58 867183.176 3 2 867750.411 866073.264 0.19% 54.9 60s H 234 42 866930.40570 866375.239 0.06% 56.6 64s H 237 43 866925.99469 866375.239 0.06% 56.0 64s 253 49 866911.507 48 1 866925.995 866375.239 0.06% 52.9 65s * 254 47 48 866914.04658 866375.239 0.06% 52.9 65s H 382 36 866849.82663 866719.020 0.02% 40.3 69s Cutting planes: Gomory: 1 Flow cover: 22 Explored 392 nodes (35894 simplex iterations) in 69.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668498266279e+05, best bound 8.667671189390e+05, gap 0.0095%