Add test to check for no incremental status when no properties to check

Author: Thomas Kiley

regression/cbmc-incr-oneloop/no-asserts/test.c

@@ -0,0 +1,7 @@
+int main() {
+	for(int i = 0; i < 10; ++i) {
+
+	}
+	// nothing to check
+	return 0;
+}

regression/cbmc-incr-oneloop/no-asserts/test.desc

@@ -0,0 +1,11 @@
+CORE
+test.c
+--incremental-loop main.0
+activate-multi-line-match
+^EXIT=0$
+^SIGNAL=0$
+VERIFICATION SUCCESSFUL
+--
+Incremental status
+--
+Verify no incremental status updates when no properties to check