Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:06:10 2013 Optimize a model with 517 rows, 22137 columns and 44227 nonzeros Presolve time: 0.03s Presolved: 517 rows, 22137 columns, 44227 nonzeros Variable types: 22090 continuous, 47 integer (47 binary) Root relaxation: objective 4.991912e+04, 1001 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49919.1233 0 9 - 49919.1233 - - 0s H 0 0 52799.000000 49919.1233 5.45% - 0s 0 0 50152.0928 0 5 52799.0000 50152.0928 5.01% - 0s 0 0 50168.0171 0 6 52799.0000 50168.0171 4.98% - 0s H 0 0 52685.000000 50168.0171 4.78% - 0s 0 0 50174.1787 0 5 52685.0000 50174.1787 4.77% - 0s 0 0 50179.0448 0 5 52685.0000 50179.0448 4.76% - 0s 0 0 50179.0857 0 5 52685.0000 50179.0857 4.76% - 0s 0 0 50185.6557 0 5 52685.0000 50185.6557 4.74% - 0s H 0 0 52592.000000 50185.6557 4.58% - 0s 0 0 50185.6978 0 5 52592.0000 50185.6978 4.58% - 0s 0 0 50185.6978 0 5 52592.0000 50185.6978 4.58% - 0s 0 2 50186.3251 0 5 52592.0000 50186.3251 4.57% - 0s H 1 1 52497.566327 50186.3251 4.40% 0.0 0s H 2 2 51523.428571 50197.1813 2.57% 7.5 0s H 3 3 50575.666667 50209.5714 0.72% 5.7 0s H 4 4 50566.714286 50216.9275 0.69% 15.0 0s H 6 4 50543.403700 50216.9275 0.65% 38.5 0s H 7 4 50529.241935 50216.9275 0.62% 41.9 0s H 12 5 50300.000000 50216.9275 0.17% 29.1 0s * 14 4 11 50282.000000 50216.9275 0.13% 27.4 0s Cutting planes: Implied bound: 82 Flow cover: 7 Explored 27 nodes (1906 simplex iterations) in 0.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.028200000000e+04, best bound 5.028200000000e+04, gap 0.0%