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Proof step 19 from proof junkref-ac (previous step)

is_indexkey((sk × val) .1), sk .fs = mkfs(class0, ty, fieldvar), ∀ r, str, class, st. r = jvmref ∨ (junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st)) ⊦ r = jvmref, junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st), ¬ is_indexkey(sk) ∧ class0 ≠ class

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 18:
sk .fs = mkfs(class0, ty, fieldvar), is_indexkey(sk), ∀ r, str, class, st. r = jvmref ∨ (junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st)) ⊦ r = jvmref, junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (sk × val) .1 = sk])]]