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Proof step 13 from proof validref-put-refval (previous step)

is_reftype(ty1), ty ≤ ty1, validref(str, r1, ty, st), r = jvmref ∨ st[r -- _type] .type ≤ ty0 ∧ ¬ junkref(str, r, st) ⊦ validref(str, r, ty0, st[r0 -- mkfs(class, ty1, fieldvar) ', refval(r1)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ validref(str, jvmref, ty, st)
Proof step 12:
is_reftype(ty1), ty ≤ ty1, validref(str, r1, ty, st), st[r -- _type] .type ≤ ty0 ⊦ r = jvmref, validref(str, r, ty0, st[r0 -- mkfs(class, ty1, fieldvar) ', refval(r1)]), junkref(str, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]