Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:36 2013

Optimize a model with 275 rows, 6275 columns and 12525 nonzeros
Presolve time: 0.01s
Presolved: 275 rows, 6275 columns, 12525 nonzeros
Variable types: 6250 continuous, 25 integer (25 binary)

Root relaxation: objective 2.163819e+04, 344 iterations, 0.00 seconds

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

     0     0 21638.1879    0    5          - 21638.1879     -      -    0s
H    0     0                    22077.000000 21638.1879  1.99%     -    0s
H    0     0                    21921.000000 21638.1879  1.29%     -    0s
     0     0 21827.2080    0    2 21921.0000 21827.2080  0.43%     -    0s
     0     0 21827.4183    0    3 21921.0000 21827.4183  0.43%     -    0s
     0     0 21828.7664    0    3 21921.0000 21828.7664  0.42%     -    0s
     0     0 21830.3148    0    3 21921.0000 21830.3148  0.41%     -    0s
     0     0 21830.3148    0    3 21921.0000 21830.3148  0.41%     -    0s
     0     2 21833.9101    0    3 21921.0000 21833.9101  0.40%     -    0s
*    5     4               4    21886.000000 21884.4964  0.01%  19.4    0s

Cutting planes:
  Implied bound: 43
  Flow cover: 2

Explored 6 nodes (529 simplex iterations) in 0.12 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.188600000000e+04, best bound 2.188449641577e+04, gap 0.0069%