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Theorem forward-lem

fwsim(IOAut(cstart, cstep, cext), IOAut(astart, astep, aext), r), exec*(IOAut(cstart, cstep, cext))(csl, cal) ⊦ ∃ asl, aal. r(asl.last, csl.last) ∧ exec*(IOAut(astart, astep, aext))(asl, aal) ∧ aext !(aal) = cext !(cal)

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: forward-implies-leqrefine,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 12
Used lemmas:
Used spec theorems:
- IOrefine-conds/fw-frag
- IOrefine-conds/proofobls-forwardsim
Used simplifier rules: