Explicit engine: better error reporting of some unsupported properties.

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@3207 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/explicit/ProbModelChecker.java

@@ -154,7 +154,9 @@ public class ProbModelChecker extends StateModelChecker
 		}
 
 		// Check for unhandled cases
-		// TODO
+		if (expr.getReward() != null)
+			throw new PrismException("Explicit engine does not yet handle bounded R operators");
+		// More? TODO
 
 		// For nondeterministic models, determine whether min or max rewards needed
 		if (modelType.nondeterministic()) {