| t2 .1 = S, value(t2 .2), value(C0[S _ t _ t0 _ t1]), ap(t2), ∀ t, t0, t1. ¬ value(C0[S _ t _ t0 _ t1]) ⊦ t2 = K, t2 = S |
t2 = t3 _ t4, t3 = S, value(t4), value(C0[S _ t _ t0 _ t1]), ap(t2), ∀ t, t0, t1. ¬ value(C0[S _ t _ t0 _ t1]) ⊦ t2 = K, t2 = S
[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ ap(t) → ( t0 = t .1 ∧ t1 = t .2 ↔ t = t0 _ t1)])], [EXTRATERMS : (t2, t3, t4)]]