Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:11:41 2013 Optimize a model with 47056 rows, 46376 columns and 185096 nonzeros Presolve removed 68 rows and 0 columns Presolve time: 0.21s Presolved: 46988 rows, 46376 columns, 185028 nonzeros Variable types: 46308 continuous, 68 integer (68 binary) Root relaxation: objective 6.261892e+04, 6356 iterations, 3.70 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 62618.9162 0 50 - 62618.9162 - - 4s H 0 0 95150.000000 62618.9162 34.2% - 6s 0 0 77196.8948 0 11 95150.0000 77196.8948 18.9% - 11s H 0 0 88340.377531 77196.8948 12.6% - 11s H 0 0 84486.000000 77196.8948 8.63% - 11s 0 0 79520.8962 0 9 84486.0000 79520.8962 5.88% - 13s 0 0 79835.2700 0 4 84486.0000 79835.2700 5.50% - 13s H 0 0 83839.864728 79835.2700 4.78% - 13s H 0 0 82374.000000 79835.2700 3.08% - 13s H 0 0 81329.000000 79835.2700 1.84% - 14s 0 2 79835.9122 0 4 81329.0000 79835.9122 1.84% - 15s H 3 3 80771.068982 80010.3130 0.94% 320 15s * 5 5 4 80055.000000 80010.7781 0.06% 226 15s Cutting planes: Gomory: 1 Implied bound: 61 Explored 10 nodes (13780 simplex iterations) in 15.76 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.005500000000e+04, best bound 8.005500000000e+04, gap 0.0%