Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:46:28 2013 Optimize a model with 20320 rows, 44060 columns and 148100 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.42s Presolved: 20300 rows, 44040 columns, 128080 nonzeros Variable types: 24040 continuous, 20000 integer (20000 binary) Root relaxation: objective 4.013975e+04, 477 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40139.7487 0 4 - 40139.7487 - - 2s 0 0 40142.3681 0 4 - 40142.3681 - - 2s 0 0 40143.3232 0 4 - 40143.3232 - - 2s 0 0 40144.3853 0 4 - 40144.3853 - - 2s 0 0 40145.3937 0 6 - 40145.3937 - - 2s 0 0 40145.5239 0 8 - 40145.5239 - - 2s 0 0 40146.0078 0 4 - 40146.0078 - - 3s 0 0 40146.0855 0 5 - 40146.0855 - - 3s 0 0 40146.5189 0 6 - 40146.5189 - - 3s 0 0 40146.5702 0 9 - 40146.5702 - - 3s 0 0 40146.9794 0 9 - 40146.9794 - - 3s 0 0 40146.9977 0 11 - 40146.9977 - - 3s 0 0 40147.0526 0 5 - 40147.0526 - - 4s 0 0 40147.2901 0 4 - 40147.2901 - - 4s 0 0 40147.4366 0 9 - 40147.4366 - - 4s 0 0 40147.6325 0 5 - 40147.6325 - - 4s 0 0 40147.7734 0 10 - 40147.7734 - - 4s 0 0 40147.7799 0 5 - 40147.7799 - - 4s 0 0 40147.8403 0 8 - 40147.8403 - - 5s 0 0 40147.9115 0 6 - 40147.9115 - - 5s 0 0 40147.9153 0 10 - 40147.9153 - - 5s 0 0 40148.1065 0 9 - 40148.1065 - - 5s 0 0 40148.1795 0 11 - 40148.1795 - - 5s 0 0 40148.2043 0 6 - 40148.2043 - - 5s 0 0 40148.2631 0 14 - 40148.2631 - - 6s 0 0 40148.3429 0 6 - 40148.3429 - - 6s 0 0 40148.4102 0 9 - 40148.4102 - - 6s 0 0 40148.4182 0 11 - 40148.4182 - - 6s 0 0 40148.5168 0 10 - 40148.5168 - - 7s 0 0 40148.5403 0 6 - 40148.5403 - - 7s 0 0 40148.5675 0 14 - 40148.5675 - - 7s 0 0 40148.5850 0 6 - 40148.5850 - - 7s 0 0 40148.5936 0 13 - 40148.5936 - - 7s 0 0 40148.6889 0 8 - 40148.6889 - - 8s 0 0 40148.6978 0 11 - 40148.6978 - - 8s 0 0 40148.7177 0 7 - 40148.7177 - - 8s 0 0 40148.7330 0 14 - 40148.7330 - - 8s 0 0 40148.7625 0 6 - 40148.7625 - - 8s 0 0 40148.7639 0 15 - 40148.7639 - - 9s 0 0 40148.7639 0 15 - 40148.7639 - - 9s H 0 0 40266.507330 40148.7639 0.29% - 11s 0 1 40148.9049 0 9 40266.5073 40148.9049 0.29% - 12s * 41 6 21 40195.186210 40195.1862 0.0% 9.6 14s Cutting planes: Gomory: 2 Implied bound: 52 Flow cover: 5 Explored 42 nodes (2693 simplex iterations) in 14.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.019518621046e+04, best bound 4.019518621046e+04, gap 0.0%