diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/coq/Sail2_prompt.v | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/coq/Sail2_prompt.v b/lib/coq/Sail2_prompt.v index 8c0ca33c..85ca95f6 100644 --- a/lib/coq/Sail2_prompt.v +++ b/lib/coq/Sail2_prompt.v @@ -77,13 +77,14 @@ match b with | BU => undefined_bool tt end. -(* For termination of recursive functions. *) -Lemma _limit_is_limit {_limit : Z} : _limit >? 0 = true -> Zwf 0 (_limit - 1) _limit. -intros. -prepare_for_solver. +(* For termination of recursive functions. We don't name assertions, so use + the type class mechanism to find it. *) +Definition _limit_reduces {_limit} (_acc:Acc (Zwf 0) _limit) `{ArithFact (_limit >= 0)} : Acc (Zwf 0) (_limit - 1). +refine (Acc_inv _acc _). +destruct H. red. omega. -Qed. +Defined. (*val whileM : forall 'rv 'vars 'e. 'vars -> ('vars -> monad 'rv bool 'e) -> ('vars -> monad 'rv 'vars 'e) -> monad 'rv 'vars 'e |