Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:59:46 2013 Optimize a model with 1800 rows, 27150 columns and 57250 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.20s Presolved: 1750 rows, 27100 columns, 56200 nonzeros Variable types: 26100 continuous, 1000 integer (1000 binary) Root relaxation: objective 1.626233e+05, 2363 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 162623.326 0 10 - 162623.326 - - 0s 0 0 162705.714 0 10 - 162705.714 - - 0s 0 0 162720.750 0 10 - 162720.750 - - 0s 0 0 162725.198 0 8 - 162725.198 - - 0s 0 0 162725.361 0 10 - 162725.361 - - 0s 0 0 162725.446 0 10 - 162725.446 - - 0s 0 0 162726.051 0 8 - 162726.051 - - 1s 0 0 162727.001 0 8 - 162727.001 - - 1s 0 0 162728.233 0 8 - 162728.233 - - 1s 0 0 162728.267 0 8 - 162728.267 - - 1s 0 0 162728.267 0 8 - 162728.267 - - 1s H 0 0 163803.75589 162728.267 0.66% - 1s 0 2 162728.267 0 8 163803.756 162728.267 0.66% - 1s H 27 5 162917.68851 162863.281 0.03% 62.4 2s Cutting planes: Implied bound: 13 Flow cover: 20 Explored 55 nodes (5337 simplex iterations) in 2.69 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.629176885125e+05, best bound 1.629021772724e+05, gap 0.0095%