Gurobi 5.0.1 (linux64) logging started Mon Dec 10 23:30:35 2012 Optimize a model with 2190 rows, 2160 columns and 7159 nonzeros Presolve removed 98 rows and 61 columns Presolve time: 0.02s Presolved: 2092 rows, 2099 columns, 6921 nonzeros Variable types: 1401 continuous, 698 integer (698 binary) Root relaxation: objective 2.009073e+05, 1048 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 200907.285 0 344 - 200907.285 - - 0s H 0 0 320228.00000 200907.285 37.3% - 0s 0 0 245645.787 0 104 320228.000 245645.787 23.3% - 0s 0 0 247098.318 0 61 320228.000 247098.318 22.8% - 0s 0 0 247377.291 0 38 320228.000 247377.291 22.7% - 0s 0 0 247382.375 0 32 320228.000 247382.375 22.7% - 0s 0 0 247383.666 0 31 320228.000 247383.666 22.7% - 0s 0 0 247384.409 0 33 320228.000 247384.409 22.7% - 0s 0 2 247397.975 0 33 320228.000 247397.975 22.7% - 0s H 97 77 249175.00000 247431.474 0.70% 4.5 0s H 600 245 248282.00000 247481.403 0.32% 4.6 0s 2663 977 248077.098 56 15 248282.000 248031.094 0.10% 5.3 5s * 8014 3886 107 248271.00000 248075.811 0.08% 4.0 8s H 8250 2645 248216.00000 248076.449 0.06% 4.0 8s 10996 3908 248129.249 67 15 248216.000 248091.809 0.05% 3.8 10s 19196 6698 248188.187 77 13 248216.000 248115.849 0.04% 3.6 15s 27189 9067 248136.228 62 15 248216.000 248130.763 0.03% 3.5 20s 35403 11104 248158.018 66 14 248216.000 248141.890 0.03% 3.5 25s 40804 12160 cutoff 43 248216.000 248148.535 0.03% 3.4 30s 48048 13004 248175.494 51 19 248216.000 248156.779 0.02% 3.4 35s 55559 13423 248176.306 69 17 248216.000 248163.911 0.02% 3.4 40s 62787 13277 248188.382 53 19 248216.000 248171.031 0.02% 3.4 45s 69753 12582 248199.360 49 16 248216.000 248177.858 0.02% 3.4 50s 76315 11256 cutoff 90 248216.000 248184.592 0.01% 3.4 55s Cutting planes: Gomory: 37 Cover: 9 Flow cover: 169 Flow path: 157 Zero half: 1 Explored 82422 nodes (280949 simplex iterations) in 59.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.482160000000e+05, best bound 2.481911795401e+05, gap 0.0100%