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Proof step 4 from proof validref-put-badclassfield (previous step)

st[r0 -- _type] .type = mkclasstype(class), st[r -- _type] .type ≤ ty, junkref(str, r, st[r0 -- fs ', val]) ⊦ fs ' = _type, r = jvmref, fs ' ∈ instfields(class), junkref(str, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ ¬ junkref(str, r, st) ∧ fs ' ≠ _type ∧ is_classtype(st[r0 -- _type] .type) ∧ ¬ fs ' ∈ instfields(st[r0 -- _type] .type .class) → ¬ junkref(str, r, st[r0 -- fs ', val])

Rule argument

[crewrite-arg: junkref-put-badclassfield , F , [val, fs, r0, st, r, str] → [val, fs, r0, st, r, str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_classtype(mkclasstype(class))], [CSIMPSEQ : ⊦ mkclasstype(class) .class = class])], [EXTRATERMS : (val, fs, r0, st, r, str)]]