Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:49 2013 Optimize a model with 260 rows, 1590 columns and 6220 nonzeros Presolve removed 10 rows and 10 columns Presolve time: 0.01s Presolved: 250 rows, 1580 columns, 5710 nonzeros Variable types: 1520 continuous, 60 integer (60 binary) Root relaxation: objective 2.387367e+04, 220 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23873.6700 0 3 - 23873.6700 - - 0s 0 0 23875.0773 0 4 - 23875.0773 - - 0s 0 0 23948.5361 0 3 - 23948.5361 - - 0s 0 0 23948.5361 0 3 - 23948.5361 - - 0s H 0 0 24406.908860 23948.5361 1.88% - 0s 0 2 23948.6255 0 3 24406.9089 23948.6255 1.88% - 0s * 5 5 4 23950.714296 23948.6255 0.01% 12.0 0s Cutting planes: Flow cover: 1 Explored 6 nodes (444 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 2.394862553870e+04, gap 0.0087%