Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:13:42 2013

Optimize a model with 20140 rows, 21020 columns and 82010 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.49s
Presolved: 20110 rows, 21000 columns, 61980 nonzeros
Variable types: 11010 continuous, 9990 integer (9990 binary)

Root relaxation: objective 2.199252e+04, 6954 iterations, 0.44 seconds

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

     0     0 21992.5209    0    2          - 21992.5209     -      -    1s
     0     0 22059.8181    0    2          - 22059.8181     -      -    1s
H    0     0                    22135.360869 22059.8181  0.34%     -    3s
     0     0 22071.4154    0    4 22135.3609 22071.4154  0.29%     -    3s
     0     0 22071.4154    0    2 22135.3609 22071.4154  0.29%     -    3s
     0     0 22071.4154    0    2 22135.3609 22071.4154  0.29%     -    3s
     0     0 22071.8868    0    4 22135.3609 22071.8868  0.29%     -    3s
     0     2 22071.8908    0    4 22135.3609 22071.8908  0.29%     -    3s
   161   162 22123.1362  160    1 22135.3609 22072.7127  0.28%   3.5    5s
H  186   185                    22134.958856 22072.7127  0.28%   3.3    5s

Cutting planes:
  Gomory: 2
  Flow cover: 5

Explored 903 nodes (26199 simplex iterations) in 9.31 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.213495885614e+04, best bound 2.213342696749e+04, gap 0.0069%