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Proof step 17 from proof junkref-put-refval (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 16:
is_reftype(ty0), ty ≤ ty0, junkrefs (str, refs, (st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)][refs .first -- _type]) .type, st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)]), r1 = jvmref ∨ st[r1 -- _type] .type ≤ ty ∧ ¬ junkref(str, r1, st) ⊦ refs = [], junkref(str, refs .first, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]