#fixed code
                                private void informSubVersions(ParserRuleContext ctx, String name, int maxSubStrings) {
        String text = getSourceText(ctx);
        if (text==null) {
            return;
        }
        inform(ctx, name, text, false);

        int startOffsetPrevious = 0;
        int count = 1;
        char[] chars = text.toCharArray();
        String firstVersions;
        while((firstVersions = VersionSplitter.getFirstVersions(text, count))!=null) {
            inform(ctx, ctx, name + "#" + count, firstVersions, true);
            inform(ctx, ctx, name + "%" + count, firstVersions.substring(startOffsetPrevious), true);
            count++;
            if (count > maxSubStrings) {
                return;
            }
            startOffsetPrevious = VersionSplitter.findNextVersionStart(chars, firstVersions.length());
        }
    }
#vulnerable code 
                                private void informSubVersions(ParserRuleContext ctx, String name, int maxSubStrings) {
        String text = getSourceText(ctx);
        inform(ctx, name, text, false);

        int startOffsetPrevious = 0;
        int count = 1;
        char[] chars = text.toCharArray();
        String firstVersions;
        while((firstVersions = VersionSplitter.getFirstVersions(text, count))!=null) {
            inform(ctx, ctx, name + "#" + count, firstVersions, true);
            inform(ctx, ctx, name + "%" + count, firstVersions.substring(startOffsetPrevious), true);
            count++;
            if (count > maxSubStrings) {
                return;
            }
            startOffsetPrevious = VersionSplitter.findNextVersionStart(chars, firstVersions.length());
        }
    } 
                            #location 7 
                            #vulnerability type NULL_DEREFERENCE