Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:58 2013 Optimize a model with 400 rows, 4220 columns and 8760 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.01s Presolved: 380 rows, 4200 columns, 8640 nonzeros Variable types: 4140 continuous, 60 integer (60 binary) Root relaxation: objective 3.860476e+04, 441 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38604.7615 0 6 - 38604.7615 - - 0s 0 0 38670.9691 0 6 - 38670.9691 - - 0s 0 0 38689.1181 0 6 - 38689.1181 - - 0s 0 0 38690.1814 0 6 - 38690.1814 - - 0s 0 0 38694.0168 0 6 - 38694.0168 - - 0s 0 0 38694.6854 0 6 - 38694.6854 - - 0s 0 0 38696.0429 0 6 - 38696.0429 - - 0s 0 0 38697.5865 0 6 - 38697.5865 - - 0s 0 0 38703.5087 0 6 - 38703.5087 - - 0s 0 0 38705.2006 0 6 - 38705.2006 - - 0s 0 0 38707.7009 0 6 - 38707.7009 - - 0s 0 0 38708.6313 0 6 - 38708.6313 - - 0s 0 0 38709.0616 0 6 - 38709.0616 - - 0s 0 0 38709.9080 0 6 - 38709.9080 - - 0s 0 0 38710.1596 0 6 - 38710.1596 - - 0s 0 0 38711.9409 0 6 - 38711.9409 - - 0s 0 0 38712.3405 0 6 - 38712.3405 - - 0s 0 0 38712.8032 0 6 - 38712.8032 - - 0s 0 0 38712.8032 0 6 - 38712.8032 - - 0s H 0 0 39501.628636 38712.8032 2.00% - 0s 0 2 38713.4477 0 6 39501.6286 38713.4477 2.00% - 0s * 8 3 7 38858.752096 38843.0621 0.04% 25.0 0s Cutting planes: Flow cover: 15 Explored 11 nodes (1086 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.885875209612e+04, best bound 3.885622699251e+04, gap 0.0065%