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Proof step 15 from proof junkref-put-refval (previous step)

refs = r + refs0, is_reftype(ty0), ty ≤ ty0, junkrefs(str, refs, (st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)][r -- _type]) .type, st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)]), r1 = jvmref ∨ st[r1 -- _type] .type ≤ ty ∧ ¬ junkref(str, r1, st) ⊦ refs = [], junkref(str, r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 14:
is_reftype(ty0), ty ≤ ty0, junkrefs(str, r ' + refs0, (st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)][r -- _type]) .type, st[r0 -- mkfs(class, ty0, fieldvar) ', refval(r1)]), r1 = jvmref ∨ st[r1 -- _type] .type ≤ ty ∧ ¬ junkref(str, r1, st) ⊦ junkref(str, r, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' + refs ≠ []], [CSIMPSEQ : ⊦ r + refs = r ' + refs])]]