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Proof step 10 from proof validref-not-junkrefs (previous step)

r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st), junkrefs(str, r ' + refs, ty, st) ⊦

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
⊦ ¬ junkrefs(str, jvmref ' + refs, ty, st)
Proof step 9:
junkrefs(str, r ' + refs, ty, st), st[r -- _type] .type ≤ ty ⊦ r = jvmref, junkref(str, r, st)

Rule argument

[emptyarg]

Additional information

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