diff --git a/testdata/parser/positive/18.pdl b/testdata/parser/positive/18.pdl
deleted file mode 100644
index 1427b45e186abd5cfb8437eb09e37c4402695a75..0000000000000000000000000000000000000000
--- a/testdata/parser/positive/18.pdl
+++ /dev/null
@@ -1,42 +0,0 @@
-#version 100
-
-import std.reo;
-
-composite main() {}
-
-primitive main1(in a, out c) {
-	int x = 0;
-	int y = 0;
-	msg z = null;
-	msg w = null;
-	x = 1;
-	y = 1;
-	while (true) {
-		sync {
-			if (x > 0 && fires(a)) {
-				z = get(a);
-				x--;
-			}
-			if (w != null && fires(c)) {
-				put(c, w);
-				w = null;
-				y++;
-			}
-		}
-		sync {
-			assert !fires(a) && !fires(c);
-			if (z != null && y > 0) {
-				w = z;
-				z = null;
-				y--;
-				x++;
-			}
-		}
-	}
-}
-
-composite main2(in a, out c) {
-	channel xo -> xi;
-	new fifo(a, xo, null);
-	new fifo(xi, c, null);
-}