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Proof step 99 from proof validval-put-any (previous step)

sk .fs = mkfs(class, ty, fieldvar), i ' .fs = mkfs(class0, ty0, fieldvar0), validref(str, r0, st[r -- _type] .type .type, st), okval(refval(r0), st[r -- _type] .type .type), is_indexkey(sk), okval(refval(r2), st[r1 -- _type] .type .type), validref(str, r2, st[r1 -- _type] .type .type, st) ⊦ is_arraytype(st[r1 -- _type] .type), validref(str, r0, st[r -- _type] .type .type, st[r1 -- i ', refval(r2)])

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 98:
⊦ validref(str, r, ty, st) ∧ ¬ is_array(str, r0, st) → validref(str, r, ty, st[r0 -- i ', val])

Rule argument

[crewrite-arg: validref-put-badarrayindex , F , [val, i, r0, st, ty, r, str] → [refval(r2), i, r1, st, st[r -- _type] .type .type, r0, str] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ is_arraytype (st[r -- _type] .type) → ¬ is_array(str, r, st)])], [EXTRATERMS : (refval(r2), i, r1, st, st[r -- _type] .type .type, r0, str)]]