Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:55:55 2013

Optimize a model with 44286 rows, 43626 columns and 174306 nonzeros
Presolve removed 2382 rows and 0 columns
Presolve time: 0.26s
Presolved: 41904 rows, 43626 columns, 169542 nonzeros
Variable types: 43560 continuous, 66 integer (66 binary)

Root relaxation: objective 7.958749e+04, 10653 iterations, 1.81 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0 79587.4857    0    2          - 79587.4857     -      -    2s
H    0     0                    80459.000000 79587.4857  1.08%     -    2s
H    0     0                    79920.000000 79587.4857  0.42%     -    2s
     0     0 79590.2002    0    3 79920.0000 79590.2002  0.41%     -    2s
     0     0 79590.2002    0    3 79920.0000 79590.2002  0.41%     -    2s
     0     2 79591.5602    0    3 79920.0000 79591.5602  0.41%     -    4s
     4     3 79865.2022    3    2 79920.0000 79777.9841  0.18%   340    5s
*    6     1               4    79871.000000 79859.5243  0.01%   264    5s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 8 nodes (12334 simplex iterations) in 5.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.987100000000e+04, best bound 7.987100000000e+04, gap 0.0%