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Proof step 28 from proof junkref-ac (previous step)

sk = fs ', is_fskey(sk), ∀ r, str, class, st. r = jvmref ∨ (junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st)) ⊦ fs .class = class, junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st), r = jvmref

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 27:
∀ r, str, class, st. r = jvmref ∨ (junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st)) ⊦ fs .class = class, junkref(str, r, addclass(class, fis0, st)) ↔ junkref(str, r, st), r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(fs ')])]]