Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:45 2013

Optimize a model with 220 rows, 1380 columns and 3490 nonzeros
Presolve removed 10 rows and 130 columns
Presolve time: 0.00s
Presolved: 210 rows, 1250 columns, 3290 nonzeros
Variable types: 1210 continuous, 40 integer (40 binary)

Root relaxation: objective 1.997658e+04, 124 iterations, 0.00 seconds

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

     0     0 19976.5790    0    4          - 19976.5790     -      -    0s
     0     0 19991.6271    0    8          - 19991.6271     -      -    0s
     0     0 19993.5295    0    8          - 19993.5295     -      -    0s
     0     0 19993.7255    0    8          - 19993.7255     -      -    0s
     0     0 19993.7255    0    8          - 19993.7255     -      -    0s
H    0     0                    20438.593638 19993.7255  2.18%     -    0s
     0     2 20004.7380    0    8 20438.5936 20004.7380  2.12%     -    0s
*    5     5               5    20160.594832 20073.6106  0.43%   9.8    0s
*   10     0               4    20157.611196 20157.6112   0.0%   7.2    0s

Cutting planes:
  Gomory: 2
  Flow cover: 4

Explored 11 nodes (283 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.015761119649e+04, best bound 2.015761119649e+04, gap 0.0%