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Proof step 55 from proof validval-put-any (previous step)

sk .fs = mkfs(class0, ty0, fieldvar0), validval(str, r1 -- sk, val, st), 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, val]), ( is_fskey(sk) → (is_referencevalue(val) → validref(str, val .refval, ty0, st) ∧ is_reftype(ty0)) ∧ (¬ is_referencevalue(val) → okval(val, ty0) ∧ ty0 ≠ void_type ∧ sk ≠ _length)) ∧ ( is_indexkey(sk) → ( is_referencevalue(val) → validref(str, val .refval, st[r1 -- _type] .type .type, st) ∧ r1 ≠ jvmref ∧ is_arraytype(st[r1 -- _type] .type) ∧ (val .refval = jvmref → is_reftype(st[r1 -- _type] .type .type))) ∧ (¬ is_referencevalue(val) → okval(val, st[r1 -- _type] .type .type)))

User applied rule case distinction

And obtained the following new goals

Rule argument

[CASEDARG : pos: right 4, ()]

Additional information

[[CONCRETESIMPRULES : ()]]