Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:25:14 2013 Optimize a model with 781 rows, 50481 columns and 100891 nonzeros Presolve time: 0.07s Presolved: 781 rows, 50481 columns, 100891 nonzeros Variable types: 50410 continuous, 71 integer (71 binary) Root relaxation: objective 8.038518e+04, 1889 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 80385.1845 0 13 - 80385.1845 - - 0s H 0 0 86459.000000 80385.1845 7.03% - 0s 0 0 80586.6057 0 5 86459.0000 80586.6057 6.79% - 0s H 0 0 84295.160753 80586.6057 4.40% - 0s H 0 0 83973.000000 80586.6057 4.03% - 0s H 0 0 80843.000000 80586.6057 0.32% - 0s 0 0 80607.4751 0 6 80843.0000 80607.4751 0.29% - 0s 0 0 80611.7498 0 6 80843.0000 80611.7498 0.29% - 0s 0 0 80615.5915 0 6 80843.0000 80615.5915 0.28% - 0s 0 0 80617.7406 0 6 80843.0000 80617.7406 0.28% - 0s 0 0 80619.0519 0 6 80843.0000 80619.0519 0.28% - 0s 0 0 80622.4711 0 5 80843.0000 80622.4711 0.27% - 0s 0 0 80626.5725 0 6 80843.0000 80626.5725 0.27% - 0s 0 0 80626.7086 0 3 80843.0000 80626.7086 0.27% - 0s 0 0 80626.7356 0 3 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 13 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 5 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 6 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 4 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 7 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 6 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 7 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 3 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 4 80843.0000 80626.7356 0.27% - 1s 0 0 80626.7356 0 3 80843.0000 80626.7356 0.27% - 2s 0 0 80626.7356 0 3 80843.0000 80626.7356 0.27% - 2s 0 2 80630.4819 0 3 80843.0000 80630.4819 0.26% - 2s H 14 6 80799.293103 80703.7931 0.12% 41.9 2s * 18 6 8 80747.000000 80706.0065 0.05% 35.0 2s * 24 3 6 80721.000000 80712.2334 0.01% 30.0 2s Cutting planes: Implied bound: 100 Flow cover: 13 Explored 27 nodes (4939 simplex iterations) in 2.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.072100000000e+04, best bound 8.071908245333e+04, gap 0.0024%