Bugfix: in detection of whether there is room for DRA DD vars before row/col.

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@758 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/prism/LTLModelChecker.java

@@ -146,7 +146,7 @@ public class LTLModelChecker
 		// and whether there is room to put them before rather than after the existing vars  
 		n = (int) Math.ceil(PrismUtils.log2(dra.size()));
 		before = true;
-		if (allDDRowVars.getMinVarIndex() - ((NondetModel) model).getAllDDNondetVars().getMaxVarIndex() < 2 * n) {
+		if ((allDDRowVars.getMinVarIndex() - ((NondetModel) model).getAllDDNondetVars().getMaxVarIndex()) - 1 < 2 * n) {
 			before = false;
 		}