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Proof step 31 from proof isobj-addobj-04 (previous step)

fis .keys = instfields(class), validfieldinits(fis, st), sk ∈ instfields(class) ⊦ r = jvmref, is_fskey(sk) ∧ r -- sk ∈ addobj(r, class, fis, st) ∧ okval(addobj(r, class, fis, st)[r -- sk], sk .fs .type)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
⊦ r -- sk ∈ addobj(r, class, fis, st) ↔ ¬ ¬ (sk ∈ fis ∨ sk = _type ∨ r -- sk ∈ st)
Proof step 30:
fis .keys = instfields(class), validfieldinits(fis, st), sk ∈ instfields(class) ⊦ r = jvmref, ¬ is_indexkey(sk) ∧ (sk ∈ fis ∨ sk = _type ∨ r -- sk ∈ st) ∧ okval(addobj(r, class, fis, st)[r -- sk], sk .fs .type)

Rule argument

[emptyarg]

Additional information

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