Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:16:19 2013 Optimize a model with 140 rows, 1050 columns and 2100 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.00s Presolved: 160 rows, 1060 columns, 2130 nonzeros Variable types: 1040 continuous, 20 integer (20 binary) Root relaxation: objective 1.836170e+04, 112 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 2 - 18361.7044 - - 0s H 0 0 18414.547312 18361.7044 0.29% - 0s 0 0 18381.2294 0 2 18414.5473 18381.2294 0.18% - 0s 0 0 18381.2294 0 2 18414.5473 18381.2294 0.18% - 0s 0 0 18383.0668 0 2 18414.5473 18383.0668 0.17% - 0s 0 0 18383.5988 0 2 18414.5473 18383.5988 0.17% - 0s 0 0 18393.6150 0 6 18414.5473 18393.6150 0.11% - 0s * 0 0 0 18412.148777 18412.1488 0.0% - 0s Cutting planes: Flow cover: 1 Explored 0 nodes (208 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%