1 files changed, 28 insertions, 0 deletions
diff --git a/Test/civl/chris.bpl b/Test/civl/chris.bpl
new file mode 100644
index 00000000..d755c76d
--- /dev/null
+++ b/Test/civl/chris.bpl
@@ -0,0 +1,28 @@
+// RUN: %boogie -noinfer -typeEncoding:m -useArrayTheory "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+var{:layer 1} x:int;
+
+procedure{:yields}{:layer 2} Havoc()
+  ensures{:atomic} |{ A: return true; }|;
+{
+  yield;
+}
+
+procedure{:yields}{:layer 1} Recover()
+  ensures{:atomic} |{ A: assert x == 5; return true; }|;
+{
+  yield;
+}
+
+procedure{:yields}{:layer 3} P()
+  ensures{:atomic} |{ A: return true; }|;
+  requires{:layer 2,3} x == 5;
+  ensures {:layer 2,3} x == 5;
+{
+
+  yield; assert{:layer 2,3} x == 5;
+  call Havoc();
+  yield; assert{:layer 3} x == 5;
+  call Recover();
+  yield; assert{:layer 2,3} x == 5;
+}