Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:52 2013 Optimize a model with 1320 rows, 6060 columns and 15100 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.08s Presolved: 1300 rows, 6040 columns, 14080 nonzeros Variable types: 5040 continuous, 1000 integer (1000 binary) Root relaxation: objective 3.709539e+04, 450 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37095.3933 0 8 - 37095.3933 - - 0s 0 0 37135.1957 0 6 - 37135.1957 - - 0s 0 0 37135.2902 0 6 - 37135.2902 - - 0s 0 0 37138.9558 0 6 - 37138.9558 - - 0s 0 0 37141.0301 0 6 - 37141.0301 - - 0s 0 0 37141.1536 0 8 - 37141.1536 - - 0s 0 0 37145.1364 0 6 - 37145.1364 - - 0s 0 0 37145.4245 0 9 - 37145.4245 - - 0s 0 0 37145.4374 0 9 - 37145.4374 - - 0s 0 0 37145.4374 0 9 - 37145.4374 - - 0s H 0 0 37317.359708 37145.4374 0.46% - 0s 0 2 37145.8276 0 7 37317.3597 37145.8276 0.46% - 0s H 27 2 37262.755139 37247.0609 0.04% 8.6 0s * 41 6 33 37254.115825 37253.2339 0.00% 8.3 0s Cutting planes: Implied bound: 26 Flow cover: 4 Explored 42 nodes (1151 simplex iterations) in 0.48 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.725411582528e+04, best bound 3.725323393584e+04, gap 0.0024%