Program: 17011
Project: 17011
Buggy source:
protected IJstType getKnownType(final VjoValidationCtx ctx,final IJstType targetType,IJstType unknownType){
  if (targetType == null || unknownType == null) {
    return VjoConstants.ARBITARY;
  }
  if (unknownType instanceof JstParamType) {
    return VjoConstants.ARBITARY;
  }
  if (unknownType instanceof IJstRefType) {
    unknownType=((IJstRefType)unknownType).getReferencedNode();
  }
  if (unknownType instanceof JstArray) {
    return unknownType;
  }
  if (unknownType instanceof IJstOType && unknownType.getParentNode() != null) {
    unknownType=unknownType.getParentNode().getOwnerType();
  }
  final JstPackage jstPackage=unknownType.getPackage();
  if (jstPackage != null) {
    if (jstPackage.getGroupName().length() > 0) {
      return VjoConstants.ARBITARY;
    }
  }
  final IJstType typeSpacedUnknownType=ctx.getTypeSpaceType(unknownType);
  final JstPackage unknownPackage=typeSpacedUnknownType.getPackage();
  if (unknownPackage != null) {
    final String unknownGroupName=unknownPackage.getGroupName();
    if (LibManager.JAVA_PRIMITIVE_LIB_NAME.equals(unknownGroupName) || LibManager.JS_NATIVE_GLOBAL_LIB_NAME.equals(unknownGroupName) || LibManager.JS_NATIVE_LIB_NAME.equals(unknownGroupName)|| LibManager.VJO_BASE_LIB_NAME.equals(unknownGroupName)|| LibManager.VJO_JAVA_LIB_NAME.equals(unknownGroupName)) {
      return typeSpacedUnknownType;
    }
  }
  if ("String_Node_Str".equals(typeSpacedUnknownType.getSimpleName())) {
    return typeSpacedUnknownType;
  }
  if (unknownType != null && unknownType instanceof JstObjectLiteralType) {
    return unknownType;
  }
  final String unknownTypeName=unknownPackage != null && "String_Node_Str".equals(unknownPackage.getName()) ? unknownType.getSimpleName() : unknownType.getName();
  for (  IJstType depType : ctx.getDependencyVerifier(targetType).getDirectDependenciesFilteredByGroup(targetType)) {
    if (depType == null || depType.getSimpleName() == null) {
      continue;
    }
 else     if (depType.getName().equals(unknownTypeName)) {
      return depType;
    }
 else     if (depType.getSimpleName().equals(unknownTypeName)) {
      return depType;
    }
  }
  List<JstParamType> paramTypeList=targetType.getParamTypes();
  if (paramTypeList != null && !paramTypeList.isEmpty()) {
    for (    JstParamType paramType : paramTypeList) {
      if (paramType.getSimpleName().equals(unknownTypeName))       return paramType;
    }
  }
  return null;
}

Fixed version (ground truth):
protected IJstType getKnownType(final VjoValidationCtx ctx,final IJstType targetType,IJstType unknownType){
  if (targetType == null || unknownType == null) {
    return VjoConstants.ARBITARY;
  }
  if (unknownType instanceof JstParamType) {
    return VjoConstants.ARBITARY;
  }
  if (unknownType instanceof IJstRefType) {
    unknownType=((IJstRefType)unknownType).getReferencedNode();
  }
  if (unknownType instanceof JstArray) {
    return unknownType;
  }
  final JstPackage jstPackage=unknownType.getPackage();
  if (jstPackage != null) {
    if (jstPackage.getGroupName().length() > 0) {
      return VjoConstants.ARBITARY;
    }
  }
  final IJstType typeSpacedUnknownType=ctx.getTypeSpaceType(unknownType);
  final JstPackage unknownPackage=typeSpacedUnknownType.getPackage();
  if (unknownPackage != null) {
    final String unknownGroupName=unknownPackage.getGroupName();
    if (LibManager.JAVA_PRIMITIVE_LIB_NAME.equals(unknownGroupName) || LibManager.JS_NATIVE_GLOBAL_LIB_NAME.equals(unknownGroupName) || LibManager.JS_NATIVE_LIB_NAME.equals(unknownGroupName)|| LibManager.VJO_BASE_LIB_NAME.equals(unknownGroupName)|| LibManager.VJO_JAVA_LIB_NAME.equals(unknownGroupName)) {
      return typeSpacedUnknownType;
    }
  }
  if ("String_Node_Str".equals(typeSpacedUnknownType.getSimpleName())) {
    return typeSpacedUnknownType;
  }
  if (unknownType != null && unknownType instanceof JstObjectLiteralType) {
    return unknownType;
  }
  final String unknownTypeName=unknownPackage != null && "String_Node_Str".equals(unknownPackage.getName()) ? unknownType.getSimpleName() : unknownType.getName();
  for (  IJstType depType : ctx.getDependencyVerifier(targetType).getDirectDependenciesFilteredByGroup(targetType)) {
    if (depType == null || depType.getSimpleName() == null) {
      continue;
    }
 else     if (depType.getName().equals(unknownTypeName)) {
      return depType;
    }
 else     if (depType.getSimpleName().equals(unknownTypeName)) {
      return depType;
    }
  }
  List<JstParamType> paramTypeList=targetType.getParamTypes();
  if (paramTypeList != null && !paramTypeList.isEmpty()) {
    for (    JstParamType paramType : paramTypeList) {
      if (paramType.getSimpleName().equals(unknownTypeName))       return paramType;
    }
  }
  return null;
}