Program: 120322
Project: 120322
Buggy source:
public void transform(NodeType node){
  ElementParameterType encoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
  if (encoding != null) {
    String value=encoding.getValue();
    String componeName=node.getComponentName();
    if ("String_Node_Str".equals(componeName)) {
      ElementParameterType sybaseEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      if (sybaseEncoding == null) {
        ComponentUtilities.addNodeProperty(node,"String_Node_Str","String_Node_Str");
        sybaseEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
        changeEncodingValue(value,sybaseEncoding);
      }
    }
 else     if ("String_Node_Str".equals(componeName)) {
      changeEncodingValue(value,encoding);
    }
 else     if ("String_Node_Str".equals(componeName)) {
      ElementParameterType enableEditOracleEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      if (enableEditOracleEncoding != null) {
        String enableEditOracleEncodingValue=enableEditOracleEncoding.getValue();
        ElementParameterType oracleEnconding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
        if (oracleEnconding != null) {
          if ("String_Node_Str".equals(enableEditOracleEncodingValue)) {
            String oracleEncodingValue=oracleEnconding.getValue();
            encoding.setValue(oracleEncodingValue);
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
          }
 else {
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            changeEncodingValue(value,encoding);
          }
        }
      }
    }
 else     if ("String_Node_Str".equals(componeName)) {
      ElementParameterType enableEditOracleEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      if (enableEditOracleEncoding != null) {
        ElementParameterType oracleEnconding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
        if (oracleEnconding != null) {
          String enableEditOracleEncodingValue=enableEditOracleEncoding.getValue();
          if ("String_Node_Str".equals(enableEditOracleEncodingValue)) {
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            oracleEnconding.setField("String_Node_Str");
          }
 else {
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            oracleEnconding.setField("String_Node_Str");
            changeEncodingValue(value,oracleEnconding);
          }
        }
      }
    }
  }
}

Fixed version (ground truth):
public void transform(NodeType node){
  ElementParameterType encoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
  if (encoding != null) {
    String value=encoding.getValue();
    String componeName=node.getComponentName();
    if ("String_Node_Str".equals(componeName)) {
      ElementParameterType sybaseEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      if (sybaseEncoding == null) {
        ComponentUtilities.addNodeProperty(node,"String_Node_Str","String_Node_Str");
        sybaseEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
        changeEncodingValue(value,sybaseEncoding);
      }
    }
 else     if ("String_Node_Str".equals(componeName)) {
      changeEncodingValue(value,encoding);
    }
 else     if ("String_Node_Str".equals(componeName)) {
      ElementParameterType enableEditOracleEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      if (enableEditOracleEncoding != null) {
        String enableEditOracleEncodingValue=enableEditOracleEncoding.getValue();
        ElementParameterType oracleEnconding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
        if (oracleEnconding != null) {
          if ("String_Node_Str".equals(enableEditOracleEncodingValue)) {
            String oracleEncodingValue=oracleEnconding.getValue();
            encoding.setValue(oracleEncodingValue);
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
          }
 else {
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            changeEncodingValue(value,encoding);
          }
        }
      }
 else {
        changeEncodingValue(value,encoding);
      }
    }
 else     if ("String_Node_Str".equals(componeName)) {
      ElementParameterType enableEditOracleEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
      if (enableEditOracleEncoding != null) {
        ElementParameterType oracleEnconding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
        if (oracleEnconding != null) {
          String enableEditOracleEncodingValue=enableEditOracleEncoding.getValue();
          if ("String_Node_Str".equals(enableEditOracleEncodingValue)) {
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            oracleEnconding.setField("String_Node_Str");
          }
 else {
            ComponentUtilities.removeNodeProperty(node,"String_Node_Str");
            oracleEnconding.setField("String_Node_Str");
            changeEncodingValue(value,oracleEnconding);
          }
        }
      }
 else {
        ComponentUtilities.addNodeProperty(node,"String_Node_Str","String_Node_Str");
        enableEditOracleEncoding=ComponentUtilities.getNodeProperty(node,"String_Node_Str");
        changeEncodingValue(value,enableEditOracleEncoding);
      }
    }
  }
}