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Proof step 75 from proof validrefs-put-badclassfield-01 (previous step)

is_classtype(st[r0 -- _type] .type), validrefs(str, refs, ty, st) ⊦ fs ' = _type, refs = [], junkref(str, refs .first, st), fs ' ∈ instfields(st[r0 -- _type] .type .class), dups(refs .butlast), validrefs(str, refs, ty, st[r0 -- fs ', val])

User applied rule structural induction

And obtained the following new goals

Proof step 74:
∀ st, r0, str, ty, fs, val. is_classtype(st[r0 -- _type] .type) ∧ validrefs(str, acc, ty, st) → fs ' = _type ∨ acc = [] ∨ junkref(str, acc .first, st) ∨ fs ' ∈ instfields(st[r0 -- _type] .type .class) ∨ dups(acc .butlast) ∨ validrefs(str, acc, ty, st[r0 -- fs ', val]), is_classtype(st[r0 -- _type] .type), validrefs(str, r + acc, ty, st) ⊦ fs ' = _type, r + acc = [], junkref(str, (r + acc) .first, st), fs ' ∈ instfields(st[r0 -- _type] .type .class), dups((r + acc) .butlast), validrefs(str, r + acc, ty, st[r0 -- fs ', val])

Rule argument

[VARWITHVARSEQSARG : refs, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : references generated by [], +;])]]