Gurobi 5.0.1 (linux64) logging started Sat Dec 8 02:35:19 2012 Optimize a model with 285 rows, 270 columns and 888 nonzeros Presolve removed 21 rows and 12 columns Presolve time: 0.00s Presolved: 264 rows, 258 columns, 840 nonzeros Variable types: 171 continuous, 87 integer (87 binary) Root relaxation: objective 2.407466e+04, 137 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 24074.6578 0 49 - 24074.6578 - - 0s 0 0 28835.0529 0 15 - 28835.0529 - - 0s 0 0 28899.4234 0 15 - 28899.4234 - - 0s 0 0 28997.6371 0 22 - 28997.6371 - - 0s 0 0 29017.0890 0 18 - 29017.0890 - - 0s 0 0 29023.2317 0 14 - 29023.2317 - - 0s H 0 0 29469.000000 29023.2317 1.51% - 0s 0 2 29026.7873 0 14 29469.0000 29026.7873 1.50% - 0s * 27 22 27 29465.000000 29026.7873 1.49% 2.7 0s Cutting planes: Gomory: 13 Cover: 3 Flow cover: 48 Flow path: 28 Explored 468 nodes (2272 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.946500000000e+04, best bound 2.946500000000e+04, gap 0.0%