Program: 72775
Project: 72775
Buggy source:
private String[] _handleInmodeExpression(String expression,String value,State state){
  String inmodeExpression="String_Node_Str";
  if (expression.contains("String_Node_Str")) {
    String before=expression.substring(0,expression.indexOf("String_Node_Str"));
    String after=expression.substring(expression.indexOf("String_Node_Str") + 10);
    before=before.trim();
    after=after.trim();
    while (before.endsWith("String_Node_Str")) {
      before.substring(0,before.length() - 1).trim();
      if (before.endsWith("String_Node_Str")) {
        int index=SCRTableHelper.indexOfMatchingOpenBracket(before,before.length());
        if (!inmodeExpression.equals("String_Node_Str")) {
          inmodeExpression=inmodeExpression + "String_Node_Str";
        }
        inmodeExpression=inmodeExpression + "String_Node_Str" + before.substring(index);
        before=before.substring(0,index - 1).trim();
      }
    }
    while (after.startsWith("String_Node_Str")) {
      after=after.substring(1).trim();
      if (after.startsWith("String_Node_Str")) {
        int index=SCRTableHelper.indexOfMatchingCloseBracket(after,0);
        if (!inmodeExpression.equals("String_Node_Str")) {
          inmodeExpression=inmodeExpression + "String_Node_Str";
        }
        inmodeExpression=inmodeExpression + "String_Node_Str" + after.substring(0,index);
        after=after.substring(index + 1).trim();
      }
    }
    if (!inmodeExpression.equals("String_Node_Str")) {
      inmodeExpression=inmodeExpression + "String_Node_Str" + value;
    }
    expression=before + after;
  }
  return new String[]{expression,inmodeExpression};
}

Fixed version (ground truth):
private String[] _handleInmodeExpression(String expression,String value,State state){
  StringBuffer inmodeExpression=new StringBuffer();
  if (expression.contains("String_Node_Str")) {
    String before=expression.substring(0,expression.indexOf("String_Node_Str"));
    String after=expression.substring(expression.indexOf("String_Node_Str") + 10);
    before=before.trim();
    after=after.trim();
    while (before.endsWith("String_Node_Str")) {
      before=before.substring(0,before.length() - 1).trim();
      if (before.endsWith("String_Node_Str")) {
        int index=SCRTableHelper.indexOfMatchingOpenBracket(before,before.length());
        if (!inmodeExpression.equals("String_Node_Str")) {
          inmodeExpression=inmodeExpression.append("String_Node_Str");
        }
        inmodeExpression=inmodeExpression.append("String_Node_Str" + before.substring(index));
        before=before.substring(0,index - 1).trim();
      }
    }
    while (after.startsWith("String_Node_Str")) {
      after=after.substring(1).trim();
      if (after.startsWith("String_Node_Str")) {
        int index=SCRTableHelper.indexOfMatchingCloseBracket(after,0);
        if (!inmodeExpression.equals("String_Node_Str")) {
          inmodeExpression=inmodeExpression.append("String_Node_Str");
        }
        inmodeExpression=inmodeExpression.append("String_Node_Str" + after.substring(0,index));
        after=after.substring(index + 1).trim();
      }
    }
    if (!inmodeExpression.equals("String_Node_Str")) {
      inmodeExpression=inmodeExpression.append("String_Node_Str" + value);
    }
    expression=before + after;
  }
  return new String[]{expression,inmodeExpression.toString()};
}