Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:26 2013 Optimize a model with 320 rows, 4140 columns and 8380 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.01s Presolved: 300 rows, 4120 columns, 8300 nonzeros Variable types: 4100 continuous, 20 integer (20 binary) Root relaxation: objective 4.636776e+04, 480 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46367.7551 0 2 - 46367.7551 - - 0s 0 0 46415.1176 0 2 - 46415.1176 - - 0s 0 0 46436.7988 0 2 - 46436.7988 - - 0s 0 0 46447.3809 0 2 - 46447.3809 - - 0s 0 0 46447.5032 0 2 - 46447.5032 - - 0s 0 0 46448.5804 0 2 - 46448.5804 - - 0s 0 0 46450.1169 0 2 - 46450.1169 - - 0s 0 0 46450.2371 0 2 - 46450.2371 - - 0s 0 0 46450.2807 0 2 - 46450.2807 - - 0s 0 0 46450.2807 0 2 - 46450.2807 - - 0s H 0 0 46625.049630 46450.2807 0.37% - 0s 0 0 46625.0496 0 1 46625.0496 46625.0496 0.0% - 0s Cutting planes: Flow cover: 10 Explored 1 nodes (773 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.662504962981e+04, best bound 4.662504962981e+04, gap 0.0%