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Proof step 6 from proof validref-put-byteval (previous step)

fs = mkfs(class, ty0, fieldvar), ty0 = byte_type, is_bytevalue(st[r -- fs ']), st[r0 -- _type] .type ≤ ty, junkref(str, r0, st[r -- fs ', byteval(by)]) ⊦ fs ' = _type, fs ' = _length, r = jvmref, r0 = jvmref, junkref(str, r0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
is_bytevalue(st[r -- mkfs(class, byte_type, fieldvar) ']), st[r0 -- _type] .type ≤ ty, junkref(str, r0, st[r -- mkfs(class, byte_type, fieldvar) ', byteval(by)]) ⊦ mkfs(class, byte_type, fieldvar) ' = _length, r = jvmref, r0 = jvmref, junkref(str, r0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkfs(class1, byte_type, fieldvar) ' ≠ _type])]]