Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:48 2013

Optimize a model with 260 rows, 1590 columns and 6220 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.01s
Presolved: 250 rows, 1580 columns, 5710 nonzeros
Variable types: 1520 continuous, 60 integer (60 binary)

Root relaxation: objective 2.199252e+04, 136 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    6          - 21992.5209     -      -    0s
     0     0 21995.1958    0    4          - 21995.1958     -      -    0s
     0     0 21995.3211    0    7          - 21995.3211     -      -    0s
     0     0 21995.3211    0    8          - 21995.3211     -      -    0s
     0     0 21995.3211    0    7          - 21995.3211     -      -    0s
H    0     0                    23522.401153 21995.3211  6.49%     -    0s
     0     2 21996.1314    0    7 23522.4012 21996.1314  6.49%     -    0s
*   14     7              12    22155.469171 22065.7667  0.40%   5.4    0s
*   18     2               5    22134.932338 22134.8910  0.00%   4.8    0s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 19 nodes (310 simplex iterations) in 0.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.213493233821e+04, best bound 2.213489101284e+04, gap 0.0002%