Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:35:20 2013 Optimize a model with 2400 rows, 102800 columns and 215900 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.45s Presolved: 2300 rows, 102700 columns, 213800 nonzeros Variable types: 102200 continuous, 500 integer (500 binary) Root relaxation: objective 8.258498e+05, 6588 iterations, 0.93 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 825849.833 0 3 - 825849.833 - - 1s H 0 0 839634.98396 825849.833 1.64% - 1s 0 0 825858.892 0 3 839634.984 825858.892 1.64% - 2s 0 0 825858.892 0 3 839634.984 825858.892 1.64% - 2s 0 0 825867.417 0 3 839634.984 825867.417 1.64% - 3s 0 0 825870.952 0 3 839634.984 825870.952 1.64% - 3s 0 0 825873.126 0 5 839634.984 825873.126 1.64% - 3s 0 0 825873.126 0 5 839634.984 825873.126 1.64% - 4s 0 0 825873.126 0 5 839634.984 825873.126 1.64% - 4s 0 0 825876.833 0 3 839634.984 825876.833 1.64% - 5s 0 0 825876.833 0 3 839634.984 825876.833 1.64% - 5s 0 0 825876.833 0 3 839634.984 825876.833 1.64% - 5s 0 0 825877.495 0 3 839634.984 825877.495 1.64% - 6s 0 0 825877.495 0 3 839634.984 825877.495 1.64% - 6s 0 0 825877.495 0 3 839634.984 825877.495 1.64% - 7s 0 2 825889.195 0 3 839634.984 825889.195 1.64% - 8s * 5 3 5 826102.66657 825989.224 0.01% 64.4 9s Cutting planes: Flow cover: 10 Explored 8 nodes (9058 simplex iterations) in 9.69 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%