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module M
type vertex
predicate edge vertex vertex
inductive path vertex vertex =
| path_nil : forall v. path v v
| path_cons : forall u v w. path u v -> edge v w -> path u w
coinductive copath vertex vertex =
| copath_nil : forall v. copath v v
| copath_cons : forall u v w. copath u v -> edge v w -> copath u w
end
module N
type vertex
predicate edge vertex vertex
inductive path vertex vertex =
| path_nil : forall v. path v v
| path_cons : forall u v w. path u v -> edge v w -> path u w
coinductive copath vertex vertex =
| copath_nil : forall v. copath v v
| copath_cons : forall u v w. copath u v -> edge v w -> copath u w
clone M with
type vertex,
predicate edge,
predicate path,
predicate copath
end
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