| value(t2 _ C0[S _ t _ t0 _ t1]), ∀ t, t0, t1. ¬ value(C0[S _ t _ t0 _ t1]) ⊦ |
⊦ t1 ≠ K ∧ t1 ≠ S → (value(t1 _ t2) ↔ ¬ ¬ (ap(t1) ∧ t1 .1 = S ∧ value(t2) ∧ value(t1 .2)))
¬ (t2 ≠ K ∧ t2 ≠ S), value(t2 _ C0[S _ t _ t0 _ t1]), ∀ t, t0, t1. ¬ value(C0[S _ t _ t0 _ t1]) ⊦
t2 ≠ K ∧ t2 ≠ S, ap(t2) ∧ t2 .1 = S ∧ value(C0[S _ t _ t0 _ t1]) ∧ value(t2 .2), ∀ t, t0, t1. ¬ value(C0[S _ t _ t0 _ t1]) ⊦
[[CONCRETESIMPRULES : ()], [EXTRATERMS : (C0[S _ t _ t0 _ t1], t2)]]