Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:43:47 2013

Optimize a model with 400 rows, 4420 columns and 9340 nonzeros
Presolve removed 20 rows and 140 columns
Presolve time: 0.01s
Presolved: 380 rows, 4280 columns, 9140 nonzeros
Variable types: 4220 continuous, 60 integer (60 binary)

Root relaxation: objective 4.642213e+04, 426 iterations, 0.01 seconds

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

     0     0 46422.1265    0    3          - 46422.1265     -      -    0s
     0     0 46449.0913    0    3          - 46449.0913     -      -    0s
     0     0 46451.7036    0    2          - 46451.7036     -      -    0s
     0     0 46452.4225    0    3          - 46452.4225     -      -    0s
     0     0 46455.1190    0    2          - 46455.1190     -      -    0s
     0     0 46456.9764    0    2          - 46456.9764     -      -    0s
     0     0 46456.9764    0    2          - 46456.9764     -      -    0s
     0     0 46456.9764    0    2          - 46456.9764     -      -    0s
     0     0 46456.9764    0    2          - 46456.9764     -      -    0s
     0     0 46456.9764    0    2          - 46456.9764     -      -    0s
H    0     0                    46797.542467 46456.9764  0.73%     -    0s
     0     2 46465.8104    0    2 46797.5425 46465.8104  0.71%     -    0s
*   15     3               5    46739.727868 46674.7292  0.14%  34.5    0s

Cutting planes:
  Flow cover: 9

Explored 18 nodes (1279 simplex iterations) in 0.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.673972786769e+04, best bound 4.673972786769e+04, gap 0.0%