Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:17 2013

Optimize a model with 540 rows, 1420 columns and 3610 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.01s
Presolved: 510 rows, 1400 columns, 3180 nonzeros
Variable types: 1210 continuous, 190 integer (190 binary)

Root relaxation: objective 2.207062e+04, 279 iterations, 0.00 seconds

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

     0     0 22070.6191    0    1          - 22070.6191     -      -    0s
     0     0 22237.3867    0    1          - 22237.3867     -      -    0s
     0     0 22261.3497    0    1          - 22261.3497     -      -    0s
     0     0 22266.5534    0    1          - 22266.5534     -      -    0s
     0     0 22266.5534    0    1          - 22266.5534     -      -    0s
     0     0 22266.5534    0    1          - 22266.5534     -      -    0s
     0     0 22266.5534    0    1          - 22266.5534     -      -    0s
H    0     0                    22970.544763 22266.5534  3.06%     -    0s
H    0     0                    22772.258980 22266.5534  2.22%     -    0s
     0     2 22284.7990    0    1 22772.2590 22284.7990  2.14%     -    0s
*   12     7              10    22369.054386 22328.2754  0.18%   8.3    0s
*   13     5              10    22368.021327 22328.2754  0.18%   7.8    0s
*   16     1               2    22336.209791 22328.2907  0.04%   8.3    0s
*   17     0               2    22332.970758 22332.9708   0.0%   8.0    0s

Cutting planes:
  Gomory: 1
  Flow cover: 4

Explored 18 nodes (490 simplex iterations) in 0.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.233297075756e+04, best bound 2.233297075756e+04, gap 0.0%