Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:59 2013

Optimize a model with 400 rows, 4220 columns and 8760 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.01s
Presolved: 380 rows, 4200 columns, 8640 nonzeros
Variable types: 4140 continuous, 60 integer (60 binary)

Root relaxation: objective 3.894400e+04, 495 iterations, 0.02 seconds

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

     0     0 38944.0027    0    4          - 38944.0027     -      -    0s
     0     0 39019.7945    0    4          - 39019.7945     -      -    0s
     0     0 39023.3863    0    5          - 39023.3863     -      -    0s
     0     0 39042.0368    0    4          - 39042.0368     -      -    0s
     0     0 39047.6217    0    4          - 39047.6217     -      -    0s
     0     0 39047.6217    0    4          - 39047.6217     -      -    0s
     0     0 39047.6217    0    4          - 39047.6217     -      -    0s
     0     0 39047.6217    0    4          - 39047.6217     -      -    0s
H    0     0                    39243.200957 39047.6217  0.50%     -    0s
     0     1 39207.7362    0    2 39243.2010 39207.7362  0.09%     -    0s

Cutting planes:
  Flow cover: 10

Explored 3 nodes (866 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.924320095727e+04, best bound 3.924320095727e+04, gap 0.0%