Gurobi 5.0.1 (linux64) logging started Fri Jan 18 03:05:09 2013 Optimize a model with 5700 rows, 40100 columns and 90050 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.31s Presolved: 5600 rows, 39950 columns, 79900 nonzeros Variable types: 35000 continuous, 4950 integer (4950 binary) Root relaxation: objective 1.715514e+05, 3737 iterations, 0.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 171551.420 0 2 - 171551.420 - - 0s 0 0 171553.825 0 1 - 171553.825 - - 0s 0 0 171553.825 0 1 - 171553.825 - - 1s H 0 0 171605.66201 171553.825 0.03% - 1s 0 2 171564.828 0 1 171605.662 171564.828 0.02% - 1s * 7 2 7 171584.76124 171584.761 0.0% 5.9 1s Cutting planes: Gomory: 1 Flow cover: 1 Explored 8 nodes (5205 simplex iterations) in 1.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.715847612416e+05, best bound 1.715847612416e+05, gap 0.0%