Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:41:30 2013

Optimize a model with 340 rows, 11130 columns and 122340 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.25s
Presolved: 330 rows, 11120 columns, 112330 nonzeros
Variable types: 11020 continuous, 100 integer (100 binary)

Root relaxation: objective 1.997658e+04, 118 iterations, 0.01 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 19976.6957    0    6          - 19976.6957     -      -    0s
     0     0 20149.8255    0    6          - 20149.8255     -      -    0s
     0     0 20149.8255    0    6          - 20149.8255     -      -    0s
     0     2 20149.8598    0    6          - 20149.8598     -      -    1s
*   17    11              16    20158.536207 20149.8598  0.04%   6.0    1s
*   36    16              15    20158.472533 20150.3402  0.04%   4.2    1s
*   38    15              16    20158.453034 20150.3402  0.04%   4.1    1s

Cutting planes:
  Flow cover: 2

Explored 67 nodes (518 simplex iterations) in 1.96 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.015845303391e+04, best bound 2.015656522477e+04, gap 0.0094%