Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:28:15 2013

Optimize a model with 160 rows, 2810 columns and 28155 nonzeros
Presolve removed 5 rows and 5 columns
Presolve time: 0.09s
Presolved: 155 rows, 2805 columns, 25650 nonzeros
Variable types: 2760 continuous, 45 integer (45 binary)

Root relaxation: objective 1.704455e+04, 78 iterations, 0.00 seconds

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

     0     0 17044.5499    0    3          - 17044.5499     -      -    0s
     0     0 17044.5687    0    3          - 17044.5687     -      -    0s
     0     0 17044.6291    0    3          - 17044.6291     -      -    0s
     0     0 17085.0860    0    3          - 17085.0860     -      -    0s
     0     0 17089.9314    0    3          - 17089.9314     -      -    0s
     0     0 17089.9314    0    3          - 17089.9314     -      -    0s
     0     0 17089.9314    0    3          - 17089.9314     -      -    0s
     0     0 17089.9314    0    3          - 17089.9314     -      -    0s
     0     0 17089.9361    0    5          - 17089.9361     -      -    0s
     0     0 17089.9361    0    5          - 17089.9361     -      -    0s
     0     2 17089.9417    0    5          - 17089.9417     -      -    1s
*   14     8              13    17095.523870 17089.9930  0.03%   4.2    1s
H   27     5                    17092.785979 17089.9957  0.02%   3.3    1s
*   31     6               7    17091.445829 17089.9957  0.01%   3.1    1s

Cutting planes:
  Flow cover: 3

Explored 32 nodes (446 simplex iterations) in 1.32 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.709144582885e+04, best bound 1.708999571204e+04, gap 0.0085%