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Proof step 70 from proof validval-put-any (previous step)

sk = fs ', fs = mkfs(class, ty, fieldvar), validval(str, rk, val, st), validval(str, r -- sk, val0, st), is_fskey(sk) ⊦ r -- _type = rk, validval(str, val0, ty, st[rk, val]) ∧ ty ≠ void_type ∧ sk ≠ _length

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 69:
validval(str, rk, val, st), validval(str, r -- mkfs(class, ty, fieldvar) ', val0, st) ⊦ r -- _type = rk, validval(str, val0, ty, st[rk, val]) ∧ ty ≠ void_type ∧ mkfs(class, ty, fieldvar) ' ≠ _length

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_fskey(fs ')])]]