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Proof step 135 from proof validval-put-any (previous step)

sk .fs = mkfs(class, ty, fieldvar), validval(str, rk, val, st), (is_fskey(sk) → validval(str, val0, sk .fs .type, st) ∧ sk .fs .type ≠ void_type ∧ sk ≠ _length) ∧ (is_indexkey(sk) → validval(str, val0, st[r -- _type] .type .type, st)), is_indexkey(sk) ⊦ r -- _type = rk, okval(val0, st[r -- _type] .type .type) ∧ (is_referencevalue(val0) → validrefval(str, val0, st[r -- _type] .type .type, st[rk, val]))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 134:
sk .fs = mkfs(class, ty, fieldvar), validval(str, rk, val, st), is_indexkey(sk), validval(str, val0, st[r -- _type] .type .type, st) ⊦ r -- _type = rk, okval(val0, st[r -- _type] .type .type) ∧ (is_referencevalue(val0) → validrefval(str, val0, st[r -- _type] .type .type, st[rk, val]))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_indexkey(sk) → ¬ is_fskey(sk)], [CSIMPSEQ : ⊦ ¬ is_indexkey(sk) ↔ is_fskey(sk)], [CSIMPSEQ : ⊦ ¬ is_fskey(sk) ↔ is_indexkey(sk)])]]