WARNING:tensorflow:5 out of the last 5 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.
WARNING:tensorflow:6 out of the last 6 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.
WARNING:tensorflow:7 out of the last 7 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.
WARNING:tensorflow:8 out of the last 8 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.
WARNING:tensorflow:9 out of the last 9 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.
WARNING:tensorflow:10 out of the last 10 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.
WARNING:tensorflow:11 out of the last 11 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.
WARNING:tensorflow:11 out of the last 11 calls to <function Model.make_train_function.<locals>.train_function at 0x7f627418ac80> triggered tf.function retracing. Tracing is expensive and the excessive number of tracings is likely due to passing python objects instead of tensors. Also, tf.function has experimental_relax_shapes=True option that relaxes argument shapes that can avoid unnecessary retracing. Please refer to https://www.tensorflow.org/tutorials/customization/performance#python_or_tensor_args and https://www.tensorflow.org/api_docs/python/tf/function for more details.

train.py:84: UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.
  plt.pause(0.01)
Segmentation fault (core dumped)

=========EPISODE # 16 ==========
100%|########################################9| 499/500 [00:53<00:00,  8.67it/s]Episode#16, steps:499, rewards:-311.104067
100%|########################################9| 499/500 [00:53<00:00,  9.28it/s]
=========EPISODE # 17 ==========
100%|########################################8| 498/500 [00:51<00:00, 10.16it/s]Episode#17, steps:499, rewards:-211.220928
100%|########################################9| 499/500 [00:51<00:00,  9.67it/s]
=========EPISODE # 18 ==========
100%|########################################8| 498/500 [00:55<00:00,  9.79it/s]Episode#18, steps:499, rewards:-243.705719
100%|########################################9| 499/500 [00:56<00:00,  8.90it/s]
=========EPISODE # 19 ==========
100%|########################################9| 499/500 [00:55<00:00,  7.42it/s]Episode#19, steps:499, rewards:-332.657685
100%|########################################9| 499/500 [00:56<00:00,  8.90it/s]
=========EPISODE # 20 ==========
100%|########################################9| 499/500 [00:55<00:00,  9.19it/s]Episode#20, steps:499, rewards:-231.899928