Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:09:40 2013

Optimize a model with 8280 rows, 12040 columns and 40020 nonzeros
Presolve removed 60 rows and 40 columns
Presolve time: 0.17s
Presolved: 8220 rows, 12000 columns, 31960 nonzeros
Variable types: 8020 continuous, 3980 integer (3980 binary)

Root relaxation: objective 3.573401e+04, 2868 iterations, 0.06 seconds

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

     0     0 35734.0139    0    3          - 35734.0139     -      -    0s
     0     0 35842.1681    0    5          - 35842.1681     -      -    0s
     0     0 35847.1649    0    5          - 35847.1649     -      -    0s
     0     0 35858.7710    0    5          - 35858.7710     -      -    0s
     0     0 35861.4445    0    5          - 35861.4445     -      -    0s
     0     0 35861.8897    0    5          - 35861.8897     -      -    0s
     0     0 35861.8897    0    5          - 35861.8897     -      -    0s
     0     2 35863.2267    0    5          - 35863.2267     -      -    1s
*  204   138             194    36187.001685 35878.4945  0.85%   9.9    4s
   375   292 36182.0422  157    1 36187.0017 35909.2750  0.77%  18.5    5s
H  386   296                    36183.111452 35909.2750  0.76%  21.1    5s
*  389   290             163    36183.105191 35909.2750  0.76%  21.7    5s
*  390   289             162    36183.090146 35909.2750  0.76%  21.8    5s
*  391   288             161    36183.066723 35909.2750  0.76%  21.9    5s
   710   372 36091.9755   13    6 36183.0667 36077.4237  0.29%  17.3   10s
H  854   418                    36173.472242 36077.4237  0.27%  25.0   12s
  1226   472     cutoff  112      36173.4722 36086.7835  0.24%  26.4   15s
  2752   895     cutoff   81      36173.4722 36112.1490  0.17%  21.0   20s
  3930  1027 36172.0580   82    1 36173.4722 36123.7709  0.14%  23.3   25s
  4939   977 36132.4786   90    1 36173.4722 36132.4786  0.11%  25.8   30s
  5878   789     cutoff   83      36173.4722 36141.2644  0.09%  28.9   35s
  6674   516 36158.7462   85    1 36173.4722 36150.2452  0.06%  31.1   40s

Cutting planes:
  Gomory: 8
  Flow cover: 19

Explored 7519 nodes (247715 simplex iterations) in 45.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.617347224193e+04, best bound 3.617020808224e+04, gap 0.0090%