Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:09:15 2013 Optimize a model with 10070 rows, 10260 columns and 40505 nonzeros Presolve removed 15 rows and 10 columns Presolve time: 0.24s Presolved: 10055 rows, 10250 columns, 30490 nonzeros Variable types: 5255 continuous, 4995 integer (4995 binary) Root relaxation: objective 1.174557e+04, 3788 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11745.5748 0 1 - 11745.5748 - - 0s 0 0 11770.8641 0 2 - 11770.8641 - - 0s 0 0 11774.0600 0 3 - 11774.0600 - - 0s H 0 0 11792.404669 11774.0600 0.16% - 0s H 0 0 11779.404669 11774.0600 0.05% - 0s 0 0 11774.0600 0 1 11779.4047 11774.0600 0.05% - 0s 0 0 11774.0600 0 2 11779.4047 11774.0600 0.05% - 0s 0 0 11774.0645 0 3 11779.4047 11774.0645 0.05% - 0s 0 0 11774.0690 0 2 11779.4047 11774.0690 0.05% - 0s 0 2 11774.0702 0 2 11779.4047 11774.0702 0.05% - 0s Cutting planes: Flow cover: 3 Explored 107 nodes (4373 simplex iterations) in 0.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.177940466895e+04, best bound 1.177940466895e+04, gap 0.0%