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Proof step 62 from proof kappa-TOPRED (previous step)

〈TOPRED(t; tn): n 〉 tn = tn1, 〈TOPRED(t; tn)〉 tn = tn0, tn0 ≠ tn1 ⊦

Heuristic weak unfold applied rule call left

And obtained the following new goals

Proof step 1:
⊦
Proof step 61:
〈tn0 := tn〉〈if n = 0 then abort else if ap(t) ∧ ap(t .1) ∧ t .1 .1 = K ∧ value(t .1 .2) ∧ value(t .2) then tn0 := some(t .1 .2) else if ap(t) ∧ ap(t .1) ∧ ap(t .1 .1) ∧ t .1 .1 .1 = S then let v1 = t .1 .1 .2, v2 = t .1 .2, v3 = t .2 in if value(v1) ∧ value(v2) ∧ value(v3) then tn0 := some(v1 _ v3 _ (v2 _ v3)) else tn0 := none else tn0 := none〉 tn0 = tn1, 〈TOPRED(t; tn)〉 tn = tn0, tn0 ≠ tn1 ⊦

Rule argument

[fmapos-arg: pos: left 1]

Additional information

[[CONCRETESIMPRULES : ()]]