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Proof step 7 from proof is_obj-put (conclusion)

⊦ is_obj(str, r, st) ∧ oktype(val, ty, st) ∧ ty ≠ void_type → is_obj(str, r, st[r1 -- mkfs(class, ty, fieldvar) ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 1:
⊦ is_obj(str, r, st) ↔ class+∃(str, st[r -- _type] .type .class) ∧ ¬ is_abstract(st[r -- _type] .type .class) ∧ is_obj(r, st)
Proof step 6:
class+∃(str, st[r -- _type] .type .class), is_obj(r, st), okval(val, ty) ⊦ ty = void_type, is_obj(str, r, st[r1 -- mkfs(class, ty, fieldvar) ', val]), is_abstract(st[r -- _type] .type .class)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ oktype(val, ty, st) ↔ okval(val, ty)])]]