Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:21 2013

Optimize a model with 240 rows, 1710 columns and 5310 nonzeros
Presolve removed 10 rows and 250 columns
Presolve time: 0.01s
Presolved: 230 rows, 1460 columns, 4910 nonzeros
Variable types: 1410 continuous, 50 integer (50 binary)

Root relaxation: objective 1.997658e+04, 140 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    6          - 19976.5790     -      -    0s
     0     0 19985.3449    0   10          - 19985.3449     -      -    0s
     0     0 19986.4660    0   10          - 19986.4660     -      -    0s
     0     0 19986.4982    0   10          - 19986.4982     -      -    0s
     0     0 19986.4982    0   10          - 19986.4982     -      -    0s
H    0     0                    20481.170766 19986.4982  2.42%     -    0s
     0     2 19995.7379    0   10 20481.1708 19995.7379  2.37%     -    0s
*    8     6               7    20163.990598 20058.6141  0.52%  10.5    0s
*   11     3               6    20160.951892 20058.6141  0.51%   7.9    0s
*   19     3               6    20158.174631 20126.8034  0.16%   5.4    0s

Cutting planes:
  Gomory: 2
  Flow cover: 4

Explored 23 nodes (381 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.015817463139e+04, best bound 2.015817463139e+04, gap 0.0%