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Proof step 15 from proof isobj-put-samefield-03 (previous step)

is_obj(r, st), okval(val, ty) ⊦ mkfs(class, ty, fieldvar) ' = _type, r ≠ jvmref ∧ r -- _type ∈ st[r -- mkfs(class, ty, fieldvar) ', val] ∧ is_typevalue(st[r -- mkfs(class, ty, fieldvar) ', val][r -- _type]) ∧ is_classtype((st[r -- mkfs(class, ty, fieldvar) ', val][r -- _type]) .type) ∧ is_obj(r, (st[r -- mkfs(class, ty, fieldvar) ', val][r -- _type]) .type .class, st[r -- mkfs(class, ty, fieldvar) ', val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ ¬ is_obj(jvmref, st)
Proof step 3:
⊦ ¬ r -- _type ∈ st → ¬ is_obj(r, st)
Proof step 4:
⊦ ¬ is_typevalue(st[r -- _type]) → ¬ is_obj(r, st)
Proof step 5:
⊦ ¬ is_classtype(st[r -- _type] .type) → ¬ is_obj(r, st)
Proof step 14:
is_obj(r, st), okval(val, ty), is_classtype(st[r -- _type] .type), is_typevalue(st[r -- _type]), r -- _type ∈ st, r ∈ st ⊦ mkfs(class, ty, fieldvar) ' = _type, r = jvmref, is_obj(r, st[r -- _type] .type .class, st[r -- mkfs(class, ty, fieldvar) ', val])

Rule argument

[emptyarg]

Additional information

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