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Proof step 24 from proof validstatfields-addclass-other (previous step)

sk .fs = mkfs(class1, ty, fieldvar), sk ∈ statfields(class0), ∀ sk. sk ∈ statfields(class0) → validstatfield(str, sk, st) ⊦ class = `java.lang.Object' .class, class = class0, validstatfield(str, sk, addclass(class, fis, st)), ¬ is_indexkey(sk) ∧ class1 ≠ class

User applied rule cut formula

And obtained the following new goals

Proof step 20:
is_indexkey(sk), sk .fs = mkfs(class1, ty, fieldvar), sk ∈ statfields(class0), ∀ sk. sk ∈ statfields(class0) → validstatfield(str, sk, st) ⊦ class = `java.lang.Object' .class, class = class0, validstatfield(str, sk, addclass(class, fis, st)), ¬ is_indexkey(sk) ∧ class1 ≠ class
Proof step 23:
sk .fs = mkfs(class1, ty, fieldvar), sk ∈ statfields(class0), ∀ sk. sk ∈ statfields(class0) → validstatfield(str, sk, st) ⊦ is_indexkey(sk), class = `java.lang.Object' .class, class = class0, validstatfield(str, sk, addclass(class, fis, st)), ¬ is_indexkey(sk) ∧ class1 ≠ class

Rule argument

[fma-arg: is_indexkey(sk)]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRAFMAS : (is_indexkey(sk))]]