Why does epochs stop at 56 times?

[taotaotao3]

I'm building a GPU with win10 and jupyter notebook.
Even though epoch is set to 200, it stops at 56 times. Why. There is no error wording.

Epoch 56/200
1562/1562 [=======================]-46s 29ms / step-loss: 0.3580-acc: 0.9366-val_loss : 0.6319-val_acc: 0.8615
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