Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:26:38 2013 Optimize a model with 1600 rows, 100800 columns and 201700 nonzeros Presolve removed 200 rows and 300 columns Presolve time: 0.50s Presolved: 1400 rows, 100500 columns, 201000 nonzeros Variable types: 100400 continuous, 100 integer (100 binary) Root relaxation: objective 8.258498e+05, 5352 iterations, 0.77 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 825849.833 0 1 - 825849.833 - - 1s H 0 0 827466.93672 825849.833 0.20% - 1s 0 0 825858.892 0 1 827466.937 825858.892 0.19% - 2s 0 0 825858.892 0 1 827466.937 825858.892 0.19% - 2s 0 0 825861.803 0 1 827466.937 825861.803 0.19% - 2s 0 0 825873.100 0 1 827466.937 825873.100 0.19% - 3s 0 0 825873.149 0 1 827466.937 825873.149 0.19% - 3s 0 0 825873.149 0 1 827466.937 825873.149 0.19% - 3s 0 0 825873.149 0 1 827466.937 825873.149 0.19% - 4s 0 0 825873.625 0 1 827466.937 825873.625 0.19% - 4s 0 0 825873.625 0 1 827466.937 825873.625 0.19% - 4s 0 0 825873.625 0 1 827466.937 825873.625 0.19% - 5s 0 0 825873.625 0 1 827466.937 825873.625 0.19% - 5s 0 0 825875.763 0 1 827466.937 825875.763 0.19% - 5s 0 0 825875.882 0 1 827466.937 825875.882 0.19% - 6s 0 0 825875.882 0 1 827466.937 825875.882 0.19% - 6s 0 2 825889.195 0 1 827466.937 825889.195 0.19% - 7s * 4 3 4 826102.66657 826102.667 0.0% 75.8 7s Cutting planes: Flow cover: 10 Explored 5 nodes (6402 simplex iterations) in 7.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.261026665679e+05, best bound 8.261026665679e+05, gap 0.0%