Program: 67506
Project: 67506
Buggy source:
public static boolean isEqualOSDataSetDesign(IBaseDataSetDesign dataSetDesign,IBaseDataSetDesign dataSetDesign2){
  if (dataSetDesign instanceof IOdaDataSetDesign && dataSetDesign2 instanceof IOdaDataSetDesign) {
    IOdaDataSetDesign dataSet=(IOdaDataSetDesign)dataSetDesign;
    IOdaDataSetDesign dataSet2=(IOdaDataSetDesign)dataSetDesign2;
    if (ComparatorUtil.isEqualString(dataSet.getQueryText(),dataSet2.getQueryText()) == false || ComparatorUtil.isEqualString(dataSet.getExtensionID(),dataSet2.getExtensionID()) == false || ComparatorUtil.isEqualString(dataSet.getPrimaryResultSetName(),dataSet2.getPrimaryResultSetName()) == false || ComparatorUtil.isEqualProps(dataSet.getPublicProperties(),dataSet2.getPublicProperties()) == false || ComparatorUtil.isEqualProps(dataSet.getPrivateProperties(),dataSet2.getPrivateProperties()) == false)     return false;
    return true;
  }
 else   if (dataSetDesign instanceof IScriptDataSetDesign && dataSetDesign2 instanceof IScriptDataSetDesign) {
    IScriptDataSetDesign dataSet=(IScriptDataSetDesign)dataSetDesign;
    IScriptDataSetDesign dataSet2=(IScriptDataSetDesign)dataSetDesign2;
    if (ComparatorUtil.isEqualString(dataSet.getOpenScript(),dataSet2.getOpenScript()) == false || ComparatorUtil.isEqualString(dataSet.getFetchScript(),dataSet2.getFetchScript()) == false || ComparatorUtil.isEqualString(dataSet.getCloseScript(),dataSet2.getCloseScript()) == false || ComparatorUtil.isEqualString(dataSet.getDescribeScript(),dataSet2.getDescribeScript()) == false)     return false;
    return true;
  }
 else   if (dataSetDesign instanceof IJointDataSetDesign && dataSetDesign2 instanceof IJointDataSetDesign) {
    IJointDataSetDesign design1=(IJointDataSetDesign)dataSetDesign;
    IJointDataSetDesign design2=(IJointDataSetDesign)dataSetDesign2;
    if (ComparatorUtil.isEqualString(design1.getLeftDataSetDesignName(),design2.getLeftDataSetDesignName()) == false || ComparatorUtil.isEqualString(design1.getRightDataSetDesignName(),design2.getRightDataSetDesignName()) == false || design1.getJoinType() != design2.getJoinType() || ComparatorUtil.isEqualJointCondition(design1.getJoinConditions(),design2.getJoinConditions()) == false)     return false;
    return true;
  }
 else {
    return false;
  }
}

Fixed version (ground truth):
public static boolean isEqualOSDataSetDesign(IBaseDataSetDesign dataSetDesign,IBaseDataSetDesign dataSetDesign2){
  if (dataSetDesign instanceof IOdaDataSetDesign && dataSetDesign2 instanceof IOdaDataSetDesign) {
    IOdaDataSetDesign dataSet=(IOdaDataSetDesign)dataSetDesign;
    IOdaDataSetDesign dataSet2=(IOdaDataSetDesign)dataSetDesign2;
    if (ComparatorUtil.isEqualString(dataSet.getQueryText(),dataSet2.getQueryText()) == false || ComparatorUtil.isEqualString(dataSet.getExtensionID(),dataSet2.getExtensionID()) == false || ComparatorUtil.isEqualString(dataSet.getPrimaryResultSetName(),dataSet2.getPrimaryResultSetName()) == false || ComparatorUtil.isEqualProps(dataSet.getPublicProperties(),dataSet2.getPublicProperties()) == false || ComparatorUtil.isEqualProps(dataSet.getPrivateProperties(),dataSet2.getPrivateProperties()) == false)     return false;
    return true;
  }
 else   if (dataSetDesign instanceof IScriptDataSetDesign && dataSetDesign2 instanceof IScriptDataSetDesign) {
    IScriptDataSetDesign dataSet=(IScriptDataSetDesign)dataSetDesign;
    IScriptDataSetDesign dataSet2=(IScriptDataSetDesign)dataSetDesign2;
    if (ComparatorUtil.isEqualString(dataSet.getOpenScript(),dataSet2.getOpenScript()) == false || ComparatorUtil.isEqualString(dataSet.getFetchScript(),dataSet2.getFetchScript()) == false || ComparatorUtil.isEqualString(dataSet.getCloseScript(),dataSet2.getCloseScript()) == false || ComparatorUtil.isEqualString(dataSet.getDescribeScript(),dataSet2.getDescribeScript()) == false)     return false;
    return true;
  }
 else   if (dataSetDesign instanceof IJointDataSetDesign && dataSetDesign2 instanceof IJointDataSetDesign) {
    IJointDataSetDesign design1=(IJointDataSetDesign)dataSetDesign;
    IJointDataSetDesign design2=(IJointDataSetDesign)dataSetDesign2;
    if (ComparatorUtil.isEqualString(design1.getLeftDataSetDesignName(),design2.getLeftDataSetDesignName()) == false || ComparatorUtil.isEqualString(design1.getLeftDataSetDesignQulifiedName(),design2.getLeftDataSetDesignQulifiedName()) == false || ComparatorUtil.isEqualString(design1.getRightDataSetDesignName(),design2.getRightDataSetDesignName()) == false || ComparatorUtil.isEqualString(design1.getRightDataSetDesignQulifiedName(),design2.getRightDataSetDesignQulifiedName()) == false || design1.getJoinType() != design2.getJoinType() || ComparatorUtil.isEqualJointCondition(design1.getJoinConditions(),design2.getJoinConditions()) == false)     return false;
    return true;
  }
 else {
    return false;
  }
}