Program: 61519
Project: 61519
Buggy source:
/** 
 */
public static VarMapping mapVariables(List<CtVariable> varContext,CtElement ingredientCtElement){
  Map<VarWrapper,List<CtVariable>> varMaps=new HashMap<>();
  List<CtVariableAccess> notMappedVariables=new ArrayList<>();
  ClassLoader classLoader=VariableResolver.class.getClassLoader();
  Map<String,List<String>> clusters=cluster.readClusterFile(Paths.get(ConfigurationProperties.getProperty("String_Node_Str") + File.separator + ConfigurationProperties.getProperty("String_Node_Str")));
  List<CtVariableAccess> variablesOutOfScope=retriveVariablesOutOfContext(varContext,ingredientCtElement);
  logger.debug("String_Node_Str" + variablesOutOfScope);
  for (  CtVariableAccess wOut : variablesOutOfScope) {
    List<String> wcluster=clusters.get(wOut.getVariable().getSimpleName());
    if (wcluster == null) {
      logger.debug("String_Node_Str" + wOut);
      continue;
    }
    logger.debug("String_Node_Str" + wOut + "String_Node_Str"+ wcluster);
    boolean mapped=false;
    VarWrapper varOutWrapper=new VarWrapper(wOut);
    for (    String wordFromCluster : wcluster) {
      List<CtVariable> varExist=existVariableWithName(varContext,wordFromCluster);
      for (      CtVariable varFromCluster : varExist) {
        CtTypeReference typeref_i=varFromCluster.getType();
        try {
          if (typeref_i.isSubtypeOf(wOut.getType())) {
            List<CtVariable> vars=varMaps.get(varOutWrapper);
            if (vars == null) {
              vars=new ArrayList<>();
              varMaps.put(varOutWrapper,vars);
            }
            vars.add(varFromCluster);
            mapped=true;
          }
        }
 catch (        Exception e) {
          logger.error(e);
        }
      }
    }
    if (!mapped)     notMappedVariables.add(wOut);
  }
  VarMapping mappings=new VarMapping(varMaps,notMappedVariables);
  return mappings;
}

Fixed version (ground truth):
/** 
 */
public static VarMapping mapVariables(List<CtVariable> varContext,CtElement ingredientCtElement){
  Map<VarAccessWrapper,List<CtVariable>> varMaps=new HashMap<>();
  List<CtVariableAccess> notMappedVariables=new ArrayList<>();
  ClassLoader classLoader=VariableResolver.class.getClassLoader();
  Map<String,List<String>> clusters=cluster.readClusterFile(Paths.get(ConfigurationProperties.getProperty("String_Node_Str") + File.separator + ConfigurationProperties.getProperty("String_Node_Str")));
  List<CtVariableAccess> variablesOutOfScope=retriveVariablesOutOfContext(varContext,ingredientCtElement);
  logger.debug("String_Node_Str" + variablesOutOfScope);
  for (  CtVariableAccess wOut : variablesOutOfScope) {
    List<String> wcluster=clusters.get(wOut.getVariable().getSimpleName());
    if (wcluster == null) {
      logger.debug("String_Node_Str" + wOut);
      continue;
    }
    logger.debug("String_Node_Str" + wOut + "String_Node_Str"+ wcluster);
    boolean mapped=false;
    VarAccessWrapper varOutWrapper=new VarAccessWrapper(wOut);
    for (    String wordFromCluster : wcluster) {
      List<CtVariable> varExist=existVariableWithName(varContext,wordFromCluster);
      for (      CtVariable varFromCluster : varExist) {
        CtTypeReference typeref_i=varFromCluster.getType();
        try {
          if (typeref_i.isSubtypeOf(wOut.getType())) {
            List<CtVariable> vars=varMaps.get(varOutWrapper);
            if (vars == null) {
              vars=new ArrayList<>();
              varMaps.put(varOutWrapper,vars);
            }
            vars.add(varFromCluster);
            mapped=true;
          }
        }
 catch (        Exception e) {
          logger.error(e);
        }
      }
    }
    if (!mapped)     notMappedVariables.add(wOut);
  }
  VarMapping mappings=new VarMapping(varMaps,notMappedVariables);
  return mappings;
}