NO

Problem 1: 

(VAR v_NonEmpty:S N:S X:S XS:S)
(RULES
after(0,XS:S) -> XS:S
after(s(N:S),cons(X:S)) -> after(N:S,XS:S)
from(X:S) -> cons(X:S)
)

Problem 1: 

Extra Variables Processor:
-> Rules:
 after(0,XS:S) -> XS:S
 after(s(N:S),cons(X:S)) -> after(N:S,XS:S)
 from(X:S) -> cons(X:S)
-> The system has extra variables.

The problem is infinite.