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Proof step 2 from proof okbytearray-put-field-01 (previous step)

⊦ str = `*Array*', str = `java.lang.Object', okbytearray(r, st[r0 -- mkfs(str .class, ty, fieldvar) ', val]) ↔ okbytearray(r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ fs ' ≠ _length ∧ fs ' ≠ _type → (okbytearray(r, st[r0 -- fs ', val]) ↔ okbytearray(r, st))

Rule argument

[crewrite-arg: okbytearray-put-field , F , [val, fs, r0, st, r] → [val, mkfs(str .class, ty, fieldvar), r0, st, r] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ mkfs(class1, ty, fieldvar) ' = _length → class1 = `*Array*' .class ∧ ty = int_type ∧ fieldvar = `length' .field], [CSIMPSEQ : ⊦ stringvar .class = stringvar0 .class ↔ stringvar = stringvar0], [CSIMPFORWARD : ⊦ _type = mkfs(class1, ty, fieldvar) ' → class1 = `java.lang.Object' .class ∧ ty = void_type ∧ fieldvar = `type' .field])], [EXTRATERMS : (val, mkfs(str .class, ty, fieldvar), r0, st, r)]]