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Proof step 44 from proof validval-put-any (previous step)

st[r1 -- _type] .type .type = void_type, sk .fs = mkfs(class0, ty0, fieldvar0), ∃ i. sk = i ', is_reftype(ty), validref(str, r0, ty, st), r ≠ r1 ∨ _type ≠ sk ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, validref(str, r0, ty, st[r1 -- sk, refval(jvmref)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 43:
st[r1 -- _type] .type .type = void_type, i ' .fs = mkfs(class0, ty0, fieldvar0), is_reftype(ty), validref(str, r0, ty, st) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, validref(str, r0, ty, st[r1 -- i ', refval(jvmref)])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ _type ≠ i '])]]