Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:34:08 2013 Optimize a model with 660 rows, 36060 columns and 72060 nonzeros Presolve time: 0.05s Presolved: 660 rows, 36060 columns, 72060 nonzeros Variable types: 36000 continuous, 60 integer (60 binary) Root relaxation: objective 6.959074e+04, 1515 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 69590.7354 0 5 - 69590.7354 - - 0s H 0 0 70491.000000 69590.7354 1.28% - 0s H 0 0 70359.000000 69590.7354 1.09% - 0s 0 0 69873.9484 0 4 70359.0000 69873.9484 0.69% - 0s 0 0 69911.9442 0 3 70359.0000 69911.9442 0.64% - 0s 0 0 69914.8936 0 3 70359.0000 69914.8936 0.63% - 0s 0 0 69914.9504 0 3 70359.0000 69914.9504 0.63% - 0s 0 0 69915.4745 0 3 70359.0000 69915.4745 0.63% - 0s 0 0 69915.7050 0 3 70359.0000 69915.7050 0.63% - 0s 0 0 69915.8308 0 2 70359.0000 69915.8308 0.63% - 0s H 0 0 70142.000000 69915.8308 0.32% - 0s 0 0 69915.8308 0 5 70142.0000 69915.8308 0.32% - 0s 0 0 69915.8308 0 3 70142.0000 69915.8308 0.32% - 0s 0 0 69915.8308 0 3 70142.0000 69915.8308 0.32% - 0s 0 0 69915.8308 0 3 70142.0000 69915.8308 0.32% - 1s 0 0 69915.8308 0 3 70142.0000 69915.8308 0.32% - 1s 0 0 69915.8308 0 3 70142.0000 69915.8308 0.32% - 1s 0 0 69915.8308 0 3 70142.0000 69915.8308 0.32% - 1s 0 0 69915.8308 0 3 70142.0000 69915.8308 0.32% - 1s 0 2 69917.7879 0 3 70142.0000 69917.7879 0.32% - 1s * 6 3 5 70134.000000 69980.5108 0.22% 75.7 1s * 9 1 2 70125.000000 70114.2771 0.02% 70.9 1s Cutting planes: Implied bound: 58 Flow cover: 6 Explored 11 nodes (4212 simplex iterations) in 1.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.012500000000e+04, best bound 7.012500000000e+04, gap 0.0%