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Theorem gfts-not-01

⊦ ¬ goodfieldsandtypes(r, sks, st[r0 -- mkfs(class0, ty, fieldvar) ', val]) ∧ mkfs(class0, ty, fieldvar) ' ≠ _type ∧ oktype(val, ty, st) → ¬ goodfieldsandtypes(r, sks, st)

Type: A user defined theorem
Validity: The proof is valid.
Features: forward, localforward,
Comment:
Used by: gfts-not,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 1
Proof steps: 4
Used lemmas: gft-not-01, good-rec-01, good-rec, good-base,
Used spec theorems:
- Used simplifier rules:
  - list/storekeys/a
  - list/storekeys/c