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

Optimize a model with 380 rows, 4340 columns and 8820 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.02s
Presolved: 340 rows, 4280 columns, 8560 nonzeros
Variable types: 4200 continuous, 80 integer (80 binary)

Root relaxation: objective 4.642213e+04, 492 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 46452.2732    0    3          - 46452.2732     -      -    0s
     0     0 46454.1135    0    3          - 46454.1135     -      -    0s
     0     0 46455.5430    0    3          - 46455.5430     -      -    0s
     0     0 46456.3926    0    2          - 46456.3926     -      -    0s
     0     0 46456.4547    0    3          - 46456.4547     -      -    0s
     0     0 46456.4864    0    3          - 46456.4864     -      -    0s
     0     0 46456.4864    0    3          - 46456.4864     -      -    0s
     0     0 46456.4864    0    3          - 46456.4864     -      -    0s
H    0     0                    46797.542467 46456.4864  0.73%     -    0s
     0     2 46462.6091    0    3 46797.5425 46462.6091  0.72%     -    0s
*   12     4               5    46739.727868 46644.2517  0.20%  24.1    0s

Cutting planes:
  Flow cover: 8

Explored 17 nodes (1112 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%