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Proof step 24 from proof ac-in-09 (previous step)

¬ is_indexkey(fv .1), ∀ r, class1, st. r = jvmref ∨ (r ∈ addclass(class1, fis0, st) ↔ r ∈ st) ⊦ r = jvmref, r ∈ addclass(class1, fv ' + fis0, st) ↔ r ∈ st

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 23:
is_fskey(fv .1), ∀ r, class1, st. r = jvmref ∨ (r ∈ addclass(class1, fis0, st) ↔ r ∈ st) ⊦ r = jvmref, r ∈ addclass(class1, fv ' + fis0, st) ↔ r ∈ st

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_indexkey(sk) ↔ is_fskey(sk)])]]