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Proof step 20 from proof junkref-put-refval-01 (previous step)

¬ (¬ junkrefs(str, r ' + refs0, st[r -- _type] .type, st) ∧ r0 ≠ jvmref ∧ is_reftype(st[r0 -- _type] .type .type)), is_arraytype(st[r0 -- _type] .type), mkarraytype(ty) ≤ st[r0 -- _type] .type, junkrefs(str, r ' + refs0, st[r -- _type] .type, st[r0 -- i ', refval(jvmref)]), is_reftype(ty) ⊦ r0 = jvmref, junkref(str, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 17:
⊦ ¬ junkref(str, r, st) → (junkrefs(str, r ' + refs0, st[r -- _type] .type, st) ↔ false)
Proof step 19:
is_arraytype(st[r0 -- _type] .type), mkarraytype(ty) ≤ st[r0 -- _type] .type, junkrefs(str, r ' + refs0, st[r -- _type] .type, st[r0 -- i ', refval(jvmref)]), is_reftype(ty) ⊦ r0 = jvmref, junkref(str, r, st), is_reftype(st[r0 -- _type] .type .type)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1])]]