Add example counters.scade.

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/source/counters.scade b/tests/source/counters.scade
new file mode 100755
index 0000000..3266ec9
--- /dev/null
+++ b/tests/source/counters.scade
@@ -0,0 +1,27 @@
+
+
+const bound: int = 1000;
+
+node counters(z: bool) returns (eq_nind : bool ; probe x, probe y : int)
+var
+  b1, b2 : bool;
+  a, b : bool;
+let
+
+  a = false -> (if pre a then pre x < bound else pre x <= 0);
+  --a = false -> pre(if a then x < bound else x <= 0);
+  x = bound -> (if a then pre x + 1 else pre x - 1);
+
+  b = true -> (if pre b then pre y < bound else pre y <= 0);
+  --b = true -> pre(if b then y < bound else y <= 0);
+  y = 0 -> (if b then pre y + 1 else pre y - 1);
+
+  b1 = x=bound;
+  b2 = y=0;
+
+
+  guarantee xy : x+y = bound;
+  guarantee bb : b1 = b2;
+  guarantee rp : -bound <= (x-y) and (x-y) <= bound;
+
+tel