Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:38:50 2013 Optimize a model with 2600 rows, 102300 columns and 207500 nonzeros Presolve removed 200 rows and 200 columns Presolve time: 0.43s Presolved: 2400 rows, 102100 columns, 206800 nonzeros Variable types: 101200 continuous, 900 integer (900 binary) Root relaxation: objective 9.481640e+05, 6111 iterations, 0.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 4 - 948163.962 - - 1s H 0 0 1150046.3192 948163.962 17.6% - 1s H 0 0 969046.71514 948163.962 2.15% - 1s 0 0 948317.384 0 4 969046.715 948317.384 2.14% - 1s 0 0 948359.037 0 4 969046.715 948359.037 2.13% - 1s 0 0 948373.535 0 4 969046.715 948373.535 2.13% - 2s 0 0 948373.535 0 4 969046.715 948373.535 2.13% - 2s 0 0 948373.535 0 4 969046.715 948373.535 2.13% - 2s 0 0 948379.034 0 4 969046.715 948379.034 2.13% - 2s 0 0 948379.034 0 4 969046.715 948379.034 2.13% - 3s 0 0 948379.906 0 4 969046.715 948379.906 2.13% - 3s 0 0 948380.243 0 4 969046.715 948380.243 2.13% - 3s 0 0 948380.243 0 4 969046.715 948380.243 2.13% - 4s 0 2 948380.382 0 4 969046.715 948380.382 2.13% - 4s 3 5 948601.110 3 1 969046.715 948466.315 2.12% 196 5s H 27 17 950377.30622 948466.315 0.20% 115 8s 76 19 949887.593 72 1 950377.306 948466.315 0.20% 42.4 10s 195 23 950171.189 191 1 950377.306 948466.315 0.20% 17.8 15s 293 26 cutoff 3 950377.306 948874.990 0.16% 26.2 20s 332 34 950331.200 20 1 950377.306 949459.873 0.10% 37.1 25s * 381 29 22 950276.23626 949766.965 0.05% 38.2 29s 382 30 950047.257 21 1 950276.236 949766.965 0.05% 38.2 30s Cutting planes: Flow cover: 24 Explored 462 nodes (24178 simplex iterations) in 34.81 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.502762362556e+05, best bound 9.501818943297e+05, gap 0.0099%