Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:07:10 2013 Optimize a model with 5400 rows, 104200 columns and 216100 nonzeros Presolve removed 300 rows and 200 columns Presolve time: 0.50s Presolved: 5100 rows, 104000 columns, 211800 nonzeros Variable types: 102100 continuous, 1900 integer (1900 binary) Root relaxation: objective 8.258498e+05, 9309 iterations, 0.97 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 839634.98396 825849.833 1.64% - 1s 0 0 825858.892 0 1 839634.984 825858.892 1.64% - 1s 0 0 825860.159 0 1 839634.984 825860.159 1.64% - 2s 0 0 825869.526 0 1 839634.984 825869.526 1.64% - 2s 0 0 825874.694 0 1 839634.984 825874.694 1.64% - 2s 0 0 825874.694 0 1 839634.984 825874.694 1.64% - 2s 0 0 825874.694 0 1 839634.984 825874.694 1.64% - 3s 0 0 825874.694 0 1 839634.984 825874.694 1.64% - 3s 0 0 825874.694 0 1 839634.984 825874.694 1.64% - 3s 0 0 825874.694 0 1 839634.984 825874.694 1.64% - 3s 0 2 825889.209 0 1 839634.984 825889.209 1.64% - 4s 2 4 825986.656 2 1 839634.984 825986.656 1.63% 120 5s * 9 3 9 826102.66657 826102.667 0.0% 72.1 6s Cutting planes: Flow cover: 9 Explored 10 nodes (10035 simplex iterations) in 6.07 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%