1 files changed, 49 insertions, 0 deletions
diff --git a/Test/civl/perm.bpl b/Test/civl/perm.bpl
new file mode 100644
index 00000000..5d6e0d21
--- /dev/null
+++ b/Test/civl/perm.bpl
@@ -0,0 +1,49 @@
+// RUN: %boogie -noinfer -typeEncoding:m -useArrayTheory "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+var {:layer 0,1} x: int;
+function {:builtin "MapConst"} ch_mapconstbool(x: bool) : [int]bool;
+
+function {:builtin "MapOr"} ch_mapunion(x: [int]bool, y: [int]bool) : [int]bool;
+
+function {:inline} {:linear "Perm"} SetCollectorPerm(x: [int]bool) : [int]bool
+{
+  x
+}
+
+procedure {:yields} {:layer 1} mainE({:linear_in "Perm"} permVar_in: [int]bool)
+   requires {:layer 1} permVar_in == ch_mapconstbool(true);
+   requires {:layer 1} x == 0;
+{
+    var {:linear "Perm"} permVar_out: [int]bool;
+
+    permVar_out := permVar_in;
+
+    yield;
+    assert {:layer 1} x == 0;
+    assert {:layer 1} permVar_out == ch_mapconstbool(true);
+
+    async call foo(permVar_out);
+    yield;
+}
+
+procedure {:yields} {:layer 1} foo({:linear_in "Perm"} permVar_in: [int]bool) 
+  requires {:layer 1} permVar_in != ch_mapconstbool(false);
+  requires {:layer 1} permVar_in[1];
+  requires {:layer 1} x == 0;
+{
+  var {:linear "Perm"} permVar_out: [int]bool;
+  permVar_out := permVar_in;
+  
+  yield;
+  assert {:layer 1} permVar_out[1];
+  assert {:layer 1} x == 0;
+
+  call Incr();
+
+  yield;
+  assert {:layer 1} permVar_out[1];
+  assert {:layer 1} x == 1;
+}
+
+procedure {:yields} {:layer 0,1} Incr();
+ensures {:atomic} |{A: x := x + 1; return true; }|;
+\ No newline at end of file