(0) Obligation:
Clauses:
num(0).
num(X) :- ','(no(zero(0)), ','(p(X, Y), num(Y))).
p(0, 0).
p(s(X), X).
zero(0).
no(X) :- ','(X, ','(!, failure(a))).
no(X1).
failure(b).
Query: num(g)
(1) PrologDeterminacyProcessorProof (EQUIVALENT transformation)
The root node satisfies the determinacy criterion.
(2) YES