SMV: range types are enum types

The range types x..y are syntactic sugar for the explicit enumeration {x, ..., y}.

Author: kroening

regression/smv/range-type/range_is_enum1.desc

@@ -0,0 +1,9 @@
+KNOWNBUG
+range_is_enum1.smv
+
+^EXIT=0$
+^SIGNAL=0$
+--
+^warning: ignoring
+--
+Conversion from range to enum not supported.

regression/smv/range-type/range_is_enum1.smv

@@ -0,0 +1,10 @@
+MODULE main
+
+-- range types are syntactic sugar for enumeration types
+VAR x: 0..6;
+VAR y: {0, 1, 2, 3, 4, 5, 6};
+VAR z: 0..6;
+
+ASSIGN x := y;
+ASSIGN y := z;
+