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Proof step 14 from proof is_obj-put-equiv (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
r1 ∈ st, okval(val, ty), r1 -- mkfs(class, ty, fieldvar) ' ∈ st, okval(st[r1 -- mkfs(class, ty, fieldvar) '], ty) ⊦ class+∃(str, st[r1 -- _type] .type .class) ∧ ¬ is_abstract(st[r1 -- _type] .type .class) ∧ is_obj(r1, st[r1 -- mkfs(class, ty, fieldvar) ', val]) ↔ is_obj(str, r1, st), ty = void_type

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(fs ')], [CSIMPSEQ : ⊦ ty ≠ void_type → mkfs(class, ty, fieldvar) ' ≠ _type])]]