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Proof step 14 from proof validref-addobj (previous step)

newref(r1, st), validref(str, r, ty1, st) ⊦ r1 = jvmref, validref(str, r, ty1, addobj(r1, class, fis, st))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ validref(str, r, ty, st) ↔ r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st)
Proof step 13:
newref(r1, st), r = jvmref ∨ st[r -- _type] .type ≤ ty1 ∧ ¬ junkref(str, r, st) ⊦ r1 = jvmref, validref(str, r, ty1, addobj(r1, class, fis, st))

Rule argument

[crewrite-arg: validref-def, F, [st, ty, r, str] → [st, ty1, r, str]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty1, r, str)]]