Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:55:38 2013 Optimize a model with 12635 rows, 12285 columns and 49035 nonzeros Presolve removed 208 rows and 0 columns Presolve time: 0.07s Presolved: 12427 rows, 12285 columns, 48619 nonzeros Variable types: 12250 continuous, 35 integer (35 binary) Root relaxation: objective 3.577065e+04, 1605 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35770.6472 0 3 - 35770.6472 - - 0s H 0 0 35874.000000 35770.6472 0.29% - 0s H 0 0 35854.000000 35770.6472 0.23% - 0s 0 0 35775.0466 0 4 35854.0000 35775.0466 0.22% - 0s 0 0 35775.8169 0 4 35854.0000 35775.8169 0.22% - 0s 0 0 35775.9794 0 3 35854.0000 35775.9794 0.22% - 0s 0 0 35776.1491 0 4 35854.0000 35776.1491 0.22% - 0s 0 0 35776.1491 0 4 35854.0000 35776.1491 0.22% - 0s 0 0 35801.4357 0 4 35854.0000 35801.4357 0.15% - 0s H 0 0 35843.000000 35801.4357 0.12% - 0s 0 0 35801.4357 0 3 35843.0000 35801.4357 0.12% - 0s 0 0 35801.5613 0 4 35843.0000 35801.5613 0.12% - 0s 0 0 35802.3055 0 4 35843.0000 35802.3055 0.11% - 0s 0 2 35807.7055 0 4 35843.0000 35807.7055 0.10% - 0s Cutting planes: Gomory: 2 Flow cover: 6 Explored 4 nodes (2595 simplex iterations) in 0.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.584300000000e+04, best bound 3.584062500000e+04, gap 0.0066%