Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:42:00 2013 Optimize a model with 520 rows, 5180 columns and 16440 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.02s Presolved: 500 rows, 5160 columns, 15420 nonzeros Variable types: 5040 continuous, 120 integer (120 binary) Root relaxation: objective 3.860476e+04, 574 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 38604.7615 0 9 - 38604.7615 - - 0s 0 0 38618.5423 0 9 - 38618.5423 - - 0s 0 0 38618.6392 0 9 - 38618.6392 - - 0s 0 0 38618.6392 0 9 - 38618.6392 - - 0s H 0 0 40993.186963 38618.6392 5.79% - 0s 0 2 38618.6392 0 9 40993.1870 38618.6392 5.79% - 0s * 11 7 11 38861.052123 38827.5186 0.09% 16.9 0s Cutting planes: Flow cover: 3 Explored 28 nodes (1038 simplex iterations) in 0.32 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.886105212265e+04, best bound 3.885878577968e+04, gap 0.0058%