Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:57 2013

Optimize a model with 480 rows, 4640 columns and 9620 nonzeros
Presolve removed 40 rows and 60 columns
Presolve time: 0.02s
Presolved: 440 rows, 4580 columns, 9160 nonzeros
Variable types: 4400 continuous, 180 integer (180 binary)

Root relaxation: objective 4.636776e+04, 593 iterations, 0.02 seconds

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

     0     0 46367.7551    0    2          - 46367.7551     -      -    0s
     0     0 46391.8244    0    2          - 46391.8244     -      -    0s
     0     0 46393.3265    0    2          - 46393.3265     -      -    0s
     0     0 46393.8994    0    2          - 46393.8994     -      -    0s
     0     0 46394.3043    0    2          - 46394.3043     -      -    0s
     0     0 46394.3043    0    2          - 46394.3043     -      -    0s
H    0     0                    46832.519780 46394.3043  0.94%     -    0s
     0     2 46411.4719    0    2 46832.5198 46411.4719  0.90%     -    0s
*    7     7               5    46652.929898 46506.0570  0.31%  16.9    0s

Cutting planes:
  Flow cover: 8

Explored 13 nodes (800 simplex iterations) in 0.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.665292989755e+04, best bound 4.665292989755e+04, gap 0.0%