Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:32:32 2013 Optimize a model with 792 rows, 51912 columns and 103752 nonzeros Presolve time: 0.07s Presolved: 792 rows, 51912 columns, 103752 nonzeros Variable types: 51840 continuous, 72 integer (72 binary) Root relaxation: objective 7.900850e+04, 2027 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 79008.4979 0 5 - 79008.4979 - - 0s H 0 0 79833.000000 79008.4979 1.03% - 0s H 0 0 79225.000000 79008.4979 0.27% - 0s 0 0 79105.2281 0 3 79225.0000 79105.2281 0.15% - 0s 0 0 79105.2281 0 5 79225.0000 79105.2281 0.15% - 0s 0 0 79105.2281 0 3 79225.0000 79105.2281 0.15% - 0s 0 0 79110.5068 0 3 79225.0000 79110.5068 0.14% - 0s 0 0 79113.3684 0 3 79225.0000 79113.3684 0.14% - 0s 0 0 79115.0781 0 3 79225.0000 79115.0781 0.14% - 0s 0 0 79115.6569 0 3 79225.0000 79115.6569 0.14% - 0s 0 0 79115.6569 0 3 79225.0000 79115.6569 0.14% - 0s 0 0 79133.0816 0 4 79225.0000 79133.0816 0.12% - 0s 0 0 79137.3333 0 2 79225.0000 79137.3333 0.11% - 1s 0 2 79139.6667 0 2 79225.0000 79139.6667 0.11% - 1s Cutting planes: Implied bound: 30 Flow cover: 3 Explored 5 nodes (3872 simplex iterations) in 1.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.922500000000e+04, best bound 7.922500000000e+04, gap 0.0%