Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:42 2013 Optimize a model with 260 rows, 2360 columns and 11130 nonzeros Presolve removed 10 rows and 290 columns Presolve time: 0.01s Presolved: 250 rows, 2070 columns, 10130 nonzeros Variable types: 2010 continuous, 60 integer (60 binary) Root relaxation: objective 1.997658e+04, 130 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19976.5790 0 6 - 19976.5790 - - 0s 0 0 19979.1036 0 12 - 19979.1036 - - 0s 0 0 19979.1559 0 12 - 19979.1559 - - 0s 0 0 19992.8130 0 8 - 19992.8130 - - 0s 0 0 19992.8130 0 8 - 19992.8130 - - 0s H 0 0 20237.680152 19992.8130 1.21% - 0s 0 2 20107.3959 0 8 20237.6802 20107.3959 0.64% - 0s * 8 6 8 20158.515969 20115.5977 0.21% 9.5 0s * 17 3 8 20158.428444 20148.6651 0.05% 4.9 0s Cutting planes: Gomory: 2 Flow cover: 2 Explored 21 nodes (415 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.015842844375e+04, best bound 2.015641643502e+04, gap 0.0100%