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Proof step 6 from proof is_obj-put-equiv (previous step)

r -- _type = r1 -- sk, sk .fs = mkfs(class, ty, fieldvar), okval(st[r1 -- sk], ty), r1 -- sk ∈ st, is_fskey(sk), okval(val, ty), r1 ∈ st ⊦ ty = void_type, class+∃(str, (st[r1 -- sk, val][r -- _type]) .type .class) ∧ ¬ is_abstract((st[r1 -- sk, val][r -- _type]) .type .class) ∧ is_obj(r, st[r1 -- sk, val]) ↔ is_obj(str, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
_type .fs = mkfs(class, ty, fieldvar), r1 ∈ st, okval(val, ty), r1 -- _type ∈ st, okval(st[r1 -- _type], ty) ⊦ ty = void_type, class+∃(str, val .type .class) ∧ ¬ is_abstract(val .type .class) ∧ is_obj(r1, st[r1 -- _type, val]) ↔ is_obj(str, r1, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(_type)], [CSIMPSEQ : ⊦ (st[rk, val][rk]) = val], [CSIMPSEQ : ⊦ r -- sk = r0 -- sk0 ↔ r = r0 ∧ sk = sk0])]]