Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:17 2013 Optimize a model with 160 rows, 1070 columns and 2190 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 150 rows, 1060 columns, 2150 nonzeros Variable types: 1050 continuous, 10 integer (10 binary) Root relaxation: objective 1.836170e+04, 114 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18361.7044 0 1 - 18361.7044 - - 0s 0 0 18381.2294 0 1 - 18381.2294 - - 0s 0 0 18381.2294 0 1 - 18381.2294 - - 0s 0 0 18381.2294 0 1 - 18381.2294 - - 0s 0 0 18381.2294 0 1 - 18381.2294 - - 0s H 0 0 18414.547312 18381.2294 0.18% - 0s 0 1 18412.1488 0 2 18414.5473 18412.1488 0.01% - 0s * 1 0 1 18412.148777 18412.1488 0.0% 31.0 0s Cutting planes: Gomory: 1 Flow cover: 4 Explored 2 nodes (197 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.841214877658e+04, best bound 1.841214877658e+04, gap 0.0%