Program: 93515
Project: 93515
Buggy source:
private BasicDBList filterMissingOptionalAndNullNullableConditions(BasicDBList conditions,DBObject content){
  Set<String> nullPaths=new HashSet<>();
  BasicDBList ret=new BasicDBList();
  conditions.stream().forEach((  Object condition) -> {
    if (condition instanceof BasicDBObject) {
      Boolean nullable=false;
      Object _nullable=((BasicDBObject)condition).get("String_Node_Str");
      if (_nullable != null && _nullable instanceof Boolean) {
        nullable=(Boolean)_nullable;
      }
      Boolean optional=false;
      Object _optional=((BasicDBObject)condition).get("String_Node_Str");
      if (_optional != null && _optional instanceof Boolean) {
        optional=(Boolean)_optional;
      }
      if (nullable) {
        Object _path=((BasicDBObject)condition).get("String_Node_Str");
        if (_path != null && _path instanceof String) {
          String path=(String)_path;
          List<Optional<Object>> props;
          try {
            props=JsonUtils.getPropsFromPath(content,path);
            if (props != null && props.stream().allMatch((            Optional<Object> prop) -> {
              return prop != null && !prop.isPresent();
            }
)) {
              nullPaths.add(path);
            }
          }
 catch (          IllegalArgumentException ex) {
            nullPaths.add(path);
          }
        }
      }
      if (optional) {
        Object _path=((BasicDBObject)condition).get("String_Node_Str");
        if (_path != null && _path instanceof String) {
          String path=(String)_path;
          List<Optional<Object>> props;
          try {
            props=JsonUtils.getPropsFromPath(content,path);
            if (props == null || props.stream().allMatch((            Optional<Object> prop) -> {
              return prop == null;
            }
)) {
              nullPaths.add(path);
            }
          }
 catch (          IllegalArgumentException ex) {
            nullPaths.add(path);
          }
        }
      }
    }
  }
);
  conditions.stream().forEach(condition -> {
    if (condition instanceof BasicDBObject) {
      Object _path=((BasicDBObject)condition).get("String_Node_Str");
      if (_path != null && _path instanceof String) {
        String path=(String)_path;
        boolean hasNullParent=nullPaths.stream().anyMatch(nullPath -> {
          return JsonUtils.isAncestorPath(nullPath,path);
        }
);
        if (!hasNullParent) {
          ret.add(condition);
        }
      }
    }
  }
);
  return ret;
}

Fixed version (ground truth):
private BasicDBList filterMissingOptionalAndNullNullableConditions(BasicDBList conditions,DBObject content,boolean patching){
  Set<String> nullPaths=new HashSet<>();
  BasicDBList ret=new BasicDBList();
  conditions.stream().forEach((  Object condition) -> {
    if (condition instanceof BasicDBObject) {
      Boolean nullable=false;
      Object _nullable=((BasicDBObject)condition).get("String_Node_Str");
      if (_nullable != null && _nullable instanceof Boolean) {
        nullable=(Boolean)_nullable;
      }
      Boolean optional=false;
      Object _optional=((BasicDBObject)condition).get("String_Node_Str");
      if (_optional != null && _optional instanceof Boolean) {
        optional=(Boolean)_optional;
      }
      if (nullable) {
        Object _path=((BasicDBObject)condition).get("String_Node_Str");
        if (_path != null && _path instanceof String) {
          String path=(String)_path;
          List<Optional<Object>> props;
          try {
            props=JsonUtils.getPropsFromPath(content,path);
            if (props != null && props.stream().allMatch((            Optional<Object> prop) -> {
              return prop != null && !prop.isPresent();
            }
)) {
              nullPaths.add(path);
            }
          }
 catch (          IllegalArgumentException ex) {
            nullPaths.add(path);
          }
        }
      }
      if (optional || patching) {
        Object _path=((BasicDBObject)condition).get("String_Node_Str");
        if (_path != null && _path instanceof String) {
          String path=(String)_path;
          List<Optional<Object>> props;
          try {
            props=JsonUtils.getPropsFromPath(content,path);
            if (props == null || props.stream().allMatch((            Optional<Object> prop) -> {
              return prop == null;
            }
)) {
              nullPaths.add(path);
            }
          }
 catch (          IllegalArgumentException ex) {
            nullPaths.add(path);
          }
        }
      }
    }
  }
);
  conditions.stream().forEach(condition -> {
    if (condition instanceof BasicDBObject) {
      Object _path=((BasicDBObject)condition).get("String_Node_Str");
      if (_path != null && _path instanceof String) {
        String path=(String)_path;
        boolean hasNullParent=nullPaths.stream().anyMatch(nullPath -> {
          return JsonUtils.isAncestorPath(nullPath,path);
        }
);
        if (!hasNullParent) {
          ret.add(condition);
        }
      }
    }
  }
);
  return ret;
}