A failing example of large graph in theano due to max recursion depth error

large-graphs.py

#!/usr/bin/python
import theano.tensor as T
import theano
from cgt.utils import Message
import time
import cgt

if __name__ == '__main__':	
	a = T.scalar(name='a', dtype='int64') # 
	b = T.scalar(name='b', dtype='int64')
	n = T.scalar(name='n', dtype='int64') # integer scalar
	m = T.scalar(name='m', dtype='int64') # integer scalar

	c = ((a + b)**(1/n+m)) + ((a-b)**(1/n-m))
	d = (1/a)**(a+b)
	
	for i in range(100):
		c = ((c*d) + d) / d

	with Message("compiling"):
		h2 = theano.clone(c, {a:((a+b)**(1/n+1) - (a+b)**(1/n+1))})
		f = theano.function([a,b,n,m], c) #Fails
	
	with Message("running"):
		print (f(3,4,5,6))