1 files changed, 0 insertions, 72 deletions
diff --git a/Chalice/tests/examples/CopyLessMessagePassing.chalice b/Chalice/tests/examples/CopyLessMessagePassing.chalice
deleted file mode 100644
index 3a9b80e0..00000000
--- a/Chalice/tests/examples/CopyLessMessagePassing.chalice
+++ /dev/null
@@ -1,72 +0,0 @@
-// program inspired by "Proving Copyless Message Passing" (Villard, Lozes and Calcagno, APLAS 2009)
-
-// msg tag indicates what the type of the message
-// channel is freed by Getter when it completes
-
-// todo: accept ack message before sending the next one (requires sending negative credit!)
-
-channel C(msg: bool, n: Node) where n!= null && acc(n.next) && acc(n.mu) && (msg ==> credit(this, 1)) && (!msg ==> acc(this.mu, 50));
-
-class Node {
-  var next: Node;
-  
-  function length(): int
-    requires this.list;
-  {
-    unfolding this.list in 1 + (next == null ? 0 : next.length())
-  }
-  
-  predicate list {
-    acc(next) && acc(mu) && (next != null ==> next.list)
-  }
-}
-
-class Program {
-  method Putter(e: C, x0: Node) 
-    requires e!= null && acc(e.mu, 50) && (x0 != null ==> x0.list) && (x0 != null ==> credit(e, - 1));
-  {
-    var x: Node := x0;
-    var t: Node;
-    
-    while(x != null) 
-      invariant (x != null ==> x.list) && (x!=null ==> acc(e.mu, 50)) && (x != null ==> credit(e, - 1));
-    {
-      unfold x.list;
-      t := x.next;
-      if(t != null) {
-        send e(true, x);
-      } else {
-        send e(false, x);
-      }
-      x := t;
-    }
-  }  
-  
-  method Getter(f: C) 
-    requires f!= null && credit(f, 1) && acc(f.mu, 50) && waitlevel << f.mu;
-  {
-    var x: Node := null;
-    var msg: bool := true;
-    while(msg)
-      invariant acc(f.mu, 50) && waitlevel << f.mu && (msg ==> credit(f, 1)) && (!msg ==> acc(f.mu, 50));
-    {
-      receive msg, x := f;
-      if(msg) {
-        free x;
-      }
-    }
-    free f; // close the channel
-  } 
-
-  method Main(x: Node)
-    requires x != null;
-    requires x.list;
-  {
-    var e := new C;
-    fork Putter(e, x);
-    fork Getter(e);
-  }  
-}
-
-
-