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Proof step 4 from proof junkref-put-other-fieldclass (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

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

Rule argument

[crewrite-arg: nopathex-badclassfield , F , [str, r, st, fs, r0] → [str, r, st, fs, r0] ]

Additional information

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