Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:13:58 2013

Optimize a model with 20140 rows, 21020 columns and 82010 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.28s
Presolved: 20110 rows, 21000 columns, 61980 nonzeros
Variable types: 11010 continuous, 9990 integer (9990 binary)

Root relaxation: objective 2.207062e+04, 7605 iterations, 0.31 seconds

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

     0     0 22070.6191    0    1          - 22070.6191     -      -    0s
     0     0 22237.3867    0    1          - 22237.3867     -      -    0s
     0     0 22264.3126    0    1          - 22264.3126     -      -    0s
     0     0 22265.1459    0    1          - 22265.1459     -      -    1s
     0     0 22265.1459    0    1          - 22265.1459     -      -    1s
     0     0 22265.2414    0    2          - 22265.2414     -      -    1s
     0     0 22269.2431    0    2          - 22269.2431     -      -    1s
     0     0 22269.4328    0    2          - 22269.4328     -      -    1s
     0     0 22272.2117    0    2          - 22272.2117     -      -    1s
     0     0 22272.5159    0    2          - 22272.5159     -      -    1s
     0     0 22273.0289    0    2          - 22273.0289     -      -    1s
     0     2 22273.2481    0    2          - 22273.2481     -      -    4s
    40    42 22286.6726   40    1          - 22286.6726     -    1.5    5s
H  211   211                    22386.546209 22287.0082  0.44%  27.5    9s
H  211   211                    22386.482200 22287.0082  0.44%  27.5    9s
*  214   211             205    22386.417669 22287.0082  0.44%  28.2    9s
*  216   211             206    22386.352656 22287.0082  0.44%  29.0    9s
*  218   210             207    22386.323234 22287.0082  0.44%  29.8    9s
   235   224 22333.8950   18    2 22386.3232 22287.3699  0.44%  31.6   10s
H  319   132                    22334.794262 22287.3699  0.21%  23.9   11s
*  337   130             120    22334.688886 22287.3699  0.21%  23.9   12s
*  375   145              21    22334.297269 22288.0922  0.21%  27.5   12s
*  376   142              21    22334.184884 22288.0922  0.21%  27.4   12s
H  380   116                    22333.165780 22288.1146  0.20%  28.1   12s

Cutting planes:
  Gomory: 1
  Flow cover: 9

Explored 494 nodes (35536 simplex iterations) in 15.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.233316578010e+04, best bound 2.233098574139e+04, gap 0.0098%