Gurobi 5.0.1 (linux64) logging started Sat Dec 8 10:29:19 2012 Optimize a model with 1095 rows, 1080 columns and 3549 nonzeros Presolve removed 105 rows and 61 columns Presolve time: 0.01s Presolved: 990 rows, 1019 columns, 3305 nonzeros Variable types: 676 continuous, 343 integer (343 binary) Root relaxation: objective 8.908406e+04, 499 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 89084.0590 0 166 - 89084.0590 - - 0s H 0 0 179697.00000 89084.0590 50.4% - 0s 0 0 110257.255 0 38 179697.000 110257.255 38.6% - 0s H 0 0 122905.00000 110257.255 10.3% - 0s 0 0 111052.952 0 27 122905.000 111052.952 9.64% - 0s 0 0 111302.860 0 22 122905.000 111302.860 9.44% - 0s 0 0 111417.875 0 19 122905.000 111417.875 9.35% - 0s 0 0 111437.444 0 16 122905.000 111437.444 9.33% - 0s 0 0 111437.984 0 14 122905.000 111437.984 9.33% - 0s 0 0 111438.612 0 13 122905.000 111438.612 9.33% - 0s 0 0 111438.653 0 13 122905.000 111438.653 9.33% - 0s 0 2 111439.802 0 13 122905.000 111439.802 9.33% - 0s H 27 27 112273.00000 111450.668 0.73% 8.4 0s * 47 44 39 112130.00000 111450.668 0.61% 7.8 1s * 109 86 53 112053.00000 111452.198 0.54% 7.4 2s 238 181 111664.808 20 19 112053.000 111484.182 0.51% 8.7 5s H 251 132 111781.00000 111484.182 0.27% 8.5 5s 487 291 111717.541 24 9 111781.000 111505.440 0.25% 8.2 10s H 550 241 111708.00000 111513.816 0.17% 8.1 11s H 700 295 111694.00000 111523.321 0.15% 8.1 14s 703 297 111555.268 7 53 111694.000 111523.321 0.15% 8.1 15s 894 329 111666.955 44 5 111694.000 111523.321 0.15% 8.7 20s * 1032 275 42 111668.00000 111558.185 0.10% 8.1 22s 1128 260 111661.997 30 4 111668.000 111570.943 0.09% 7.9 25s 1358 166 cutoff 21 111668.000 111609.538 0.05% 7.5 30s Cutting planes: Gomory: 3 Flow cover: 13 Flow path: 6 Explored 1539 nodes (11712 simplex iterations) in 33.86 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.116679999999e+05, best bound 1.116570796843e+05, gap 0.0098%