proper support for "isabelle update -D DIR": avoid accidental exclusion of select_dirs (amending e5dafe9e120f);
theory README_Simple imports Main
begin
section \<open>UNITY: Examples Involving Single Programs\<close>
text \<open>
The directory presents verification examples that do not involve program
composition. They are mostly taken from Misra's 1994 papers on ``New
UNITY'':
\<^item> common meeting time (\<^file>\<open>Common.thy\<close>)
\<^item> the token ring (\<^file>\<open>Token.thy\<close>)
\<^item> the communication network (\<^file>\<open>Network.thy\<close>)
\<^item> the lift controller (a standard benchmark) (\<^file>\<open>Lift.thy\<close>)
\<^item> a mutual exclusion algorithm (\<^file>\<open>Mutex.thy\<close>)
\<^item> \<open>n\<close>-process deadlock (\<^file>\<open>Deadlock.thy\<close>)
\<^item> unordered channel (\<^file>\<open>Channel.thy\<close>)
\<^item> reachability in directed graphs (section 6.4 of the book)
(\<^file>\<open>Reach.thy\<close> and \<^file>\<open>Reachability.thy\<close>>
\<close>
end