Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:57:09 2013 Optimize a model with 2000 rows, 102100 columns and 206700 nonzeros Presolve removed 100 rows and 700 columns Presolve time: 0.28s Presolved: 1900 rows, 101400 columns, 205700 nonzeros Variable types: 101100 continuous, 300 integer (300 binary) Root relaxation: objective 8.654105e+05, 6578 iterations, 1.04 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 - - 1s H 0 0 898678.98797 865410.545 3.70% - 1s 0 0 865464.797 0 2 898678.988 865464.797 3.70% - 2s 0 0 865504.395 0 2 898678.988 865504.395 3.69% - 2s 0 0 865512.537 0 2 898678.988 865512.537 3.69% - 2s 0 0 865523.746 0 2 898678.988 865523.746 3.69% - 3s 0 0 865526.961 0 2 898678.988 865526.961 3.69% - 3s 0 0 865529.562 0 1 898678.988 865529.562 3.69% - 4s 0 0 865530.002 0 2 898678.988 865530.002 3.69% - 4s 0 0 865533.635 0 1 898678.988 865533.635 3.69% - 5s 0 0 865533.635 0 1 898678.988 865533.635 3.69% - 5s 0 0 865534.226 0 1 898678.988 865534.226 3.69% - 6s 0 0 865534.798 0 1 898678.988 865534.798 3.69% - 7s 0 0 865535.204 0 1 898678.988 865535.204 3.69% - 7s 0 0 865535.204 0 1 898678.988 865535.204 3.69% - 8s 0 2 865545.125 0 1 898678.988 865545.125 3.69% - 8s 2 4 866599.521 1 2 898678.988 866453.739 3.59% 668 10s H 27 17 869098.88645 866564.739 0.29% 107 14s 35 20 867750.550 33 1 869098.886 866564.739 0.29% 90.6 15s 61 27 867313.410 5 1 869098.886 866617.012 0.29% 82.6 20s * 180 64 67 866990.89656 866619.058 0.04% 38.1 23s H 193 42 866899.19924 866686.099 0.02% 36.5 23s * 215 12 36 866846.99594 866801.667 0.01% 33.1 24s Cutting planes: Flow cover: 18 Explored 216 nodes (15873 simplex iterations) in 24.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668469959374e+05, best bound 8.668016668193e+05, gap 0.0052%