Generative RNNG: "Unexecuted actions remain but final state reached!"

Hi,

I try to run the generative RNNG on the PTB. And I deleted line 33571 of the training data (I have the same sentence on that line), which is mentioned in README.md. Then I follow the step:

python get_unkified_terminals.py -p train_gen.oracle > train-terms.txt

./wcluster --text ../rnng/train-terms.txt --c 140 //get clusters-train-berk-mine.txt

nohup build/nt-parser/nt-parser-gen --cnn-mem 2048 -x -T train_gen.oracle -d dev_gen.oracle -t --clusters clusters-train-berk-mine.txt --input_dim 256 --lstm_input_dim 256 --hidden_dim 256 -D 0.3 > log_gen.txt

But at update 11, I get the error message
>Unexecuted actions remain but final state reached!

The detailed log file is attached.
[log_gen.txt](https://github.com/clab/rnng/files/2133386/log_gen.txt)

Any help will be appreciated!

(BTW, I am able to run the discriminative model.)