1 files changed, 36 insertions, 0 deletions
diff --git a/Test/civl/Program3.bpl b/Test/civl/Program3.bpl
new file mode 100644
index 00000000..565279e7
--- /dev/null
+++ b/Test/civl/Program3.bpl
@@ -0,0 +1,36 @@
+// RUN: %boogie -noinfer -typeEncoding:m -useArrayTheory "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+var {:layer 0,1} x:int;
+
+procedure {:yields} {:layer 1} yield_x()
+ensures {:layer 1} x >= old(x); 
+{
+    yield;
+    assert {:layer 1} x >= old(x);
+}
+
+procedure {:yields} {:layer 1} p() 
+requires {:layer 1} x >= 5; 
+ensures {:layer 1} x >= 8; 
+{ 
+    call yield_x();
+    call Incr(1); 
+    call yield_x();
+    call Incr(1); 
+    call yield_x();
+    call Incr(1); 
+    call yield_x();
+}
+
+procedure {:yields} {:layer 1} q() 
+{ 
+    yield;
+    call Incr(3); 
+    yield;
+}
+
+procedure {:yields} {:layer 0,1} Incr(val: int);
+ensures {:atomic}
+|{A:
+  x := x + val; return true;
+}|;