1 files changed, 68 insertions, 0 deletions
diff --git a/Test/civl/Program4.bpl b/Test/civl/Program4.bpl
new file mode 100644
index 00000000..7f2f9c44
--- /dev/null
+++ b/Test/civl/Program4.bpl
@@ -0,0 +1,68 @@
+// RUN: %boogie -noinfer -typeEncoding:m -useArrayTheory "%s" > "%t"
+// RUN: %diff "%s.expect" "%t"
+type Tid; 
+var {:layer 0,1} a:[Tid]int;
+
+procedure {:yields} {:layer 1} main() { 
+    var {:linear "tid"} tid:Tid;
+
+    yield;
+    while (true) { 
+        call tid := Allocate(); 
+	async call P(tid); 
+	yield;
+    }
+    yield;
+}
+
+procedure {:yields} {:layer 1} P({:linear "tid"} tid: Tid) 
+ensures {:layer 1} a[tid] == old(a)[tid] + 1; 
+{ 
+    var t:int;
+
+    yield;
+    assert {:layer 1} a[tid] == old(a)[tid];
+    call t := Read(tid); 
+    yield;
+    assert {:layer 1} a[tid] == t; 
+    call Write(tid, t + 1); 
+    yield;
+    assert {:layer 1} a[tid] == t + 1; 
+}
+
+procedure {:yields} {:layer 1} Allocate() returns ({:linear "tid"} tid: Tid)
+{
+    yield;
+    call tid := AllocateLow();
+    yield;
+}
+
+procedure {:yields} {:layer 0,1} Read({:linear "tid"} tid: Tid) returns (val: int);
+ensures {:atomic}
+|{A:
+  val := a[tid]; return true;
+}|;
+
+procedure {:yields} {:layer 0,1} Write({:linear "tid"} tid: Tid, val: int);
+ensures {:atomic}
+|{A:
+  a[tid] := val; return true;
+}|;
+
+procedure {:yields} {:layer 0,1} AllocateLow() returns ({:linear "tid"} tid: Tid);
+ensures {:atomic} |{ A: return true; }|;
+
+
+
+function {:builtin "MapConst"} MapConstBool(bool): [Tid]bool;
+function {:builtin "MapOr"} MapOr([Tid]bool, [Tid]bool) : [Tid]bool;
+
+function {:inline} {:linear "tid"} TidCollector(x: Tid) : [Tid]bool
+{
+  MapConstBool(false)[x := true]
+}
+function {:inline} {:linear "tid"} TidSetCollector(x: [Tid]bool) : [Tid]bool
+{
+  x
+}
+