Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:35 2013 Optimize a model with 1140 rows, 2020 columns and 6010 nonzeros Presolve removed 30 rows and 20 columns Presolve time: 0.04s Presolved: 1110 rows, 2000 columns, 4980 nonzeros Variable types: 1510 continuous, 490 integer (490 binary) Root relaxation: objective 2.387367e+04, 513 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23873.6700 0 1 - 23873.6700 - - 0s 0 0 23950.4249 0 3 - 23950.4249 - - 0s H 0 0 23950.714296 23950.4249 0.00% - 0s Cutting planes: Gomory: 1 Flow cover: 2 Explored 0 nodes (563 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.395071429558e+04, best bound 2.395042492242e+04, gap 0.0012%