Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:57 2013

Optimize a model with 400 rows, 4220 columns and 8760 nonzeros
Presolve removed 20 rows and 20 columns
Presolve time: 0.02s
Presolved: 380 rows, 4200 columns, 8640 nonzeros
Variable types: 4140 continuous, 60 integer (60 binary)

Root relaxation: objective 4.370285e+04, 629 iterations, 0.01 seconds

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

     0     0 43702.8549    0    4          - 43702.8549     -      -    0s
     0     0 43723.5780    0    2          - 43723.5780     -      -    0s
     0     0 43725.7873    0    2          - 43725.7873     -      -    0s
     0     0 43725.7873    0    2          - 43725.7873     -      -    0s
     0     0 43725.7873    0    2          - 43725.7873     -      -    0s
     0     0 43725.8106    0    2          - 43725.8106     -      -    0s
     0     0 43725.8106    0    2          - 43725.8106     -      -    0s
H    0     0                    44033.613407 43725.8106  0.70%     -    0s
     0     2 43729.6678    0    2 44033.6134 43729.6678  0.69%     -    0s
*    5     3               5    44000.669969 43847.1529  0.35%  25.0    0s
*   19     2               5    43899.817028 43896.3252  0.01%  17.4    0s

Cutting planes:
  Flow cover: 6

Explored 20 nodes (1218 simplex iterations) in 0.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.389981702769e+04, best bound 4.389632523006e+04, gap 0.0080%