Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:33 2013 Optimize a model with 280 rows, 4100 columns and 8200 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.00s Presolved: 320 rows, 4120 columns, 8260 nonzeros Variable types: 4080 continuous, 40 integer (40 binary) Root relaxation: objective 4.642213e+04, 511 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46422.1265 0 6 - 46422.1265 - - 0s H 0 0 46719.242149 46422.1265 0.64% - 0s 0 0 46452.7299 0 6 46719.2421 46452.7299 0.57% - 0s 0 0 46461.1750 0 6 46719.2421 46461.1750 0.55% - 0s 0 0 46461.1750 0 6 46719.2421 46461.1750 0.55% - 0s 0 0 46461.1750 0 6 46719.2421 46461.1750 0.55% - 0s 0 0 46462.0865 0 6 46719.2421 46462.0865 0.55% - 0s 0 0 46462.5560 0 6 46719.2421 46462.5560 0.55% - 0s 0 0 46464.5871 0 6 46719.2421 46464.5871 0.55% - 0s 0 0 46466.6413 0 6 46719.2421 46466.6413 0.54% - 0s 0 0 46466.6413 0 6 46719.2421 46466.6413 0.54% - 0s 0 0 46466.7304 0 6 46719.2421 46466.7304 0.54% - 0s 0 0 46466.8320 0 6 46719.2421 46466.8320 0.54% - 0s 0 0 46467.5572 0 6 46719.2421 46467.5572 0.54% - 0s 0 0 46467.5572 0 6 46719.2421 46467.5572 0.54% - 0s 0 0 46467.5680 0 6 46719.2421 46467.5680 0.54% - 0s 0 0 46467.9314 0 6 46719.2421 46467.9314 0.54% - 0s 0 0 46467.9314 0 6 46719.2421 46467.9314 0.54% - 0s 0 0 46467.9314 0 6 46719.2421 46467.9314 0.54% - 0s 0 0 46467.9314 0 6 46719.2421 46467.9314 0.54% - 0s 0 0 46697.8119 0 2 46719.2421 46697.8119 0.05% - 0s Cutting planes: Flow cover: 1 Explored 0 nodes (1179 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.671924214897e+04, best bound 4.671924214897e+04, gap 0.0%