TailCalls.dfy(21,16): Error: this recursive call is not recognized as being tail recursive, because it is followed by non-ghost code
TailCalls.dfy(38,24): Error: sorry, tail-call optimizations are not supported for mutually recursive methods
TailCalls.dfy(43,24): Error: sorry, tail-call optimizations are not supported for mutually recursive methods
3 resolution/type errors detected in TailCalls.dfy