Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:48 2013 Optimize a model with 2028 rows, 6044 columns and 16082 nonzeros Presolve removed 821 rows and 2422 columns Presolve time: 0.19s Presolved: 1207 rows, 3622 columns, 7244 nonzeros Variable types: 2421 continuous, 1201 integer (1201 binary) Root relaxation: objective 5.281733e+03, 5 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 5281.73269 0 1 - 5281.73269 - - 0s H 0 0 5327.1674700 5281.73269 0.85% - 0s H 0 0 5296.3130139 5281.73269 0.28% - 0s 0 0 5286.78415 0 3 5296.31301 5286.78415 0.18% - 0s 0 0 5286.84914 0 3 5296.31301 5286.84914 0.18% - 0s 0 0 5286.90412 0 3 5296.31301 5286.90412 0.18% - 0s 0 0 5286.95801 0 3 5296.31301 5286.95801 0.18% - 0s 0 0 5287.01088 0 3 5296.31301 5287.01088 0.18% - 0s 0 0 5287.06276 0 3 5296.31301 5287.06276 0.17% - 0s 0 0 5287.11370 0 3 5296.31301 5287.11370 0.17% - 0s 0 0 5287.16373 0 3 5296.31301 5287.16373 0.17% - 0s 0 0 5287.21290 0 3 5296.31301 5287.21290 0.17% - 0s 0 0 5287.26124 0 3 5296.31301 5287.26124 0.17% - 0s 0 0 5287.30878 0 3 5296.31301 5287.30878 0.17% - 0s 0 0 5287.35555 0 3 5296.31301 5287.35555 0.17% - 0s 0 0 5287.40158 0 3 5296.31301 5287.40158 0.17% - 0s Cutting planes: Cover: 1 Flow cover: 2 Explored 0 nodes (989 simplex iterations) in 0.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.296313013899e+03, best bound 5.296313013899e+03, gap 0.0%