Program: 119595
Project: 119595
Buggy source:
@SuppressWarnings("String_Node_Str") @Override public void execute(){
  if (connectionList != null && connectionList.size() != 0) {
    curConn=connectionList.get(0);
    listNm=(List<IConnection>)curConn.getSource().getOutgoingConnections(curConn.getLineStyle());
    outputs=(List<Connection>)curConn.getSource().getOutgoingConnections();
    connIndex=outputs.indexOf(curConn);
    deactiveNum=0;
    object=outputs.get(connIndex);
    if (listNm.size() > 1) {
      for (int i=0; i < listNm.size(); i++) {
        if (!listNm.get(i).isActivate()) {
          deactiveNum=deactiveNum + 1;
        }
      }
      outputs.remove(curConn);
      if (value) {
        outputs.add(outputs.size() - deactiveNum,(Connection)object);
      }
 else {
        outputs.add(curConn);
      }
      curConn.updateAllId();
    }
  }
  if (nodeList != null && nodeList.size() > 0) {
    List<Connection> connIn=null;
    List<Connection> allConn=null;
    connIn=(List<Connection>)nodeList.get(0).getIncomingConnections();
    if (nodeList.get(0).getIncomingConnections() != null && nodeList.get(0).getIncomingConnections().size() > 0) {
      allConn=(List<Connection>)nodeList.get(0).getIncomingConnections().get(0).getSource().getOutgoingConnections();
      if (allConn.containsAll(connIn)) {
        if (connIn != null && connIn.size() >= 1) {
          for (int i=0; i < connIn.size(); i++) {
            Connection con=connIn.get(i);
            allConn.remove(con);
            allConn.add(con);
          }
        }
      }
      allConn.get(0).updateAllId();
    }
  }
  Process process;
  if (nodeList.size() > 0) {
    process=(Process)nodeList.get(0).getProcess();
  }
 else {
    process=(Process)curConn.getSource().getProcess();
  }
  process.setActivate(false);
  for (  Connection connection : connectionList) {
    connection.setPropertyValue(EParameterName.ACTIVATE.getName(),value);
  }
  for (  Node node : nodeList) {
    if (isSameSchemaInputOutput(node)) {
      node.setPropertyValue(EParameterName.DUMMY.getName(),!value);
    }
    node.setPropertyValue(EParameterName.ACTIVATE.getName(),value);
  }
  dummyMiddleElement(false);
  process.setActivate(true);
  process.checkStartNodes();
  process.checkProcess();
  refreshPropertyView();
}

Fixed version (ground truth):
@SuppressWarnings("String_Node_Str") @Override public void execute(){
  if (connectionList != null && connectionList.size() != 0) {
    curConn=connectionList.get(0);
    listNm=(List<IConnection>)curConn.getSource().getOutgoingConnections(curConn.getLineStyle());
    outputs=(List<Connection>)curConn.getSource().getOutgoingConnections();
    connIndex=outputs.indexOf(curConn);
    deactiveNum=0;
    object=outputs.get(connIndex);
    if (listNm.size() > 1) {
      for (int i=0; i < listNm.size(); i++) {
        if (!listNm.get(i).isActivate()) {
          deactiveNum=deactiveNum + 1;
        }
      }
      outputs.remove(curConn);
      if (value) {
        outputs.add(outputs.size() - deactiveNum,(Connection)object);
      }
 else {
        outputs.add(curConn);
      }
      curConn.updateAllId();
    }
  }
  if (nodeList != null && nodeList.size() > 0) {
    List<Connection> connIn=null;
    List<Connection> allConn=null;
    connIn=(List<Connection>)nodeList.get(0).getIncomingConnections();
    if (nodeList.get(0).getIncomingConnections() != null && nodeList.get(0).getIncomingConnections().size() > 0) {
      allConn=(List<Connection>)nodeList.get(0).getIncomingConnections().get(0).getSource().getOutgoingConnections();
      if (allConn.containsAll(connIn)) {
        if (connIn != null && connIn.size() >= 1) {
          for (int i=0; i < connIn.size(); i++) {
            Connection con=connIn.get(i);
            allConn.remove(con);
            allConn.add(con);
          }
        }
      }
      allConn.get(0).updateAllId();
    }
  }
  Process process;
  if (nodeList.size() > 0) {
    process=(Process)nodeList.get(0).getProcess();
  }
 else {
    process=(Process)curConn.getSource().getProcess();
  }
  process.setActivate(false);
  for (  Connection connection : connectionList) {
    connection.setPropertyValue(EParameterName.ACTIVATE.getName(),value);
  }
  List uniqueNameList=new ArrayList();
  for (  Node node : nodeList) {
    uniqueNameList.add(node.getUniqueName());
    if (isSameSchemaInputOutput(node)) {
      node.setPropertyValue(EParameterName.DUMMY.getName(),!value);
    }
    node.setPropertyValue(EParameterName.ACTIVATE.getName(),value);
  }
  dummyMiddleElement(false);
  if (!value) {
    List<? extends INode> graphicalNodes=process.getGraphicalNodes();
    for (    INode node : graphicalNodes) {
      List<? extends IElementParameter> elementParameters=node.getElementParameters();
      for (      IElementParameter param : elementParameters) {
        EParameterFieldType fieldType=param.getFieldType();
        if (EParameterFieldType.COMPONENT_LIST == fieldType) {
          Object value=param.getValue();
          if (uniqueNameList.contains(value)) {
            param.setValue("String_Node_Str");
            node.setPropertyValue(EParameterName.UPDATE_COMPONENTS.getName(),Boolean.TRUE);
            String key=node.getUniqueName() + "String_Node_Str" + param.getName();
            componentListChanged.put(key,value);
          }
        }
      }
    }
  }
  process.setActivate(true);
  process.checkStartNodes();
  process.checkProcess();
  refreshPropertyView();
}