turn off execution explcitly when testing parser

Makefile

@@ -12,7 +12,7 @@ all : main
 	cc $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) $(LDLIBS) -o $@ $<
 
 test : main
-	./main -xvv test.txt
+	./main -vv test.txt
 
 demo : main
 	for i in demofiles/*.c; do echo $$i; ./main -x < $$i;  done