Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:03:50 2013

Optimize a model with 2140 rows, 7020 columns and 18010 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.20s
Presolved: 2120 rows, 6990 columns, 13980 nonzeros
Variable types: 5000 continuous, 1990 integer (1990 binary)

Root relaxation: objective 2.199252e+04, 102 iterations, 0.00 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     -      -    0s
     0     0 21994.0405    0    4          - 21994.0405     -      -    0s
     0     0 21994.0674    0    4          - 21994.0674     -      -    0s
     0     0 21994.0674    0    4          - 21994.0674     -      -    0s
     0     2 21994.5728    0    4          - 21994.5728     -      -    0s
*  210   129             201    22282.669282 22065.7166  0.97%   1.9    1s
*  215   126             202    22282.224943 22065.7166  0.97%   1.9    1s
*  287   188              60    22278.483798 22065.9302  0.95%   1.9    1s
*  290   183              61    22277.899481 22065.9302  0.95%   1.9    1s
H  347   229                    22268.963936 22066.1329  0.91%   1.9    1s
H  374   235                    22263.107971 22066.3246  0.88%   2.3    1s
*  678   429              49    22136.671011 22066.6745  0.32%   4.1    2s
H  688   398                    22136.466242 22066.6745  0.32%   4.0    3s
*  714   369              49    22134.957138 22066.6745  0.31%   4.0    3s

Cutting planes:
  Gomory: 2
  Flow cover: 4

Explored 1411 nodes (5207 simplex iterations) in 3.83 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.213495713844e+04, best bound 2.213299519973e+04, gap 0.0089%