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

class+∃(str, st[r -- _type] .type .class), is_obj(r, st), r -- mkfs(class, ty, fieldvar) ' ∈ st, okval(st[r -- mkfs(class, ty, fieldvar) '], ty), okval(val, ty), r ∈ st ⊦ mkfs(class, ty, fieldvar) ' = _type, class+∃(str, (st[r -- mkfs(class, ty, fieldvar) ', val][r -- _type]) .type .class) ∧ ¬ is_abstract((st[r -- mkfs(class, ty, fieldvar) ', val][r -- _type]) .type .class) ∧ is_obj(r, st[r -- mkfs(class, ty, fieldvar) ', val]), is_abstract(st[r -- _type] .type .class)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
class+∃(str, st[r -- _type] .type .class), is_obj(r, st), r -- mkfs(class, ty, fieldvar) ' ∈ st, okval(st[r -- mkfs(class, ty, fieldvar) '], ty), okval(val, ty), r ∈ st ⊦ mkfs(class, ty, fieldvar) ' = _type, is_abstract(st[r -- _type] .type .class), is_obj(r, st[r -- mkfs(class, ty, fieldvar) ', val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ sk ≠ sk0 → (st[r -- sk, val][r0 -- sk0]) = st[r0 -- sk0]])]]