Program: 29044
Project: 29044
Buggy source:
@Override protected void init(ExpressionExecutor[] attributeExpressionExecutors,ExecutionPlanContext executionPlanContext){
  this.expiredEventChunk=new ComplexEventChunk<StreamEvent>();
  if (attributeExpressionExecutors.length <= 2 && attributeExpressionExecutors.length <= 4) {
    if ((attributeExpressionExecutors[0] instanceof ConstantExpressionExecutor)) {
      throw new ExecutionPlanValidationException("String_Node_Str");
    }
    if (attributeExpressionExecutors[0].getReturnType() != Attribute.Type.LONG) {
      throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[0].getReturnType());
    }
    timestampExpressionExecutor=attributeExpressionExecutors[0];
    if (attributeExpressionExecutors[1].getReturnType() == Attribute.Type.INT) {
      timeToKeep=(Integer)((ConstantExpressionExecutor)attributeExpressionExecutors[1]).getValue();
    }
 else     if (attributeExpressionExecutors[1].getReturnType() == Attribute.Type.LONG) {
      timeToKeep=(Long)((ConstantExpressionExecutor)attributeExpressionExecutors[1]).getValue();
    }
 else {
      throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[1].getReturnType());
    }
    if (attributeExpressionExecutors.length <= 3) {
      isStartTimeEnabled=true;
      if (attributeExpressionExecutors[2].getReturnType() == Attribute.Type.INT) {
        startTime=Integer.parseInt(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[2]).getValue()));
      }
 else       if (attributeExpressionExecutors[2].getReturnType() == Attribute.Type.LONG) {
        startTime=Long.parseLong(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[2]).getValue()));
      }
 else {
        throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[2].getReturnType());
      }
    }
    if (attributeExpressionExecutors.length == 4) {
      if (attributeExpressionExecutors[3].getReturnType() == Attribute.Type.INT) {
        schedulerTimeout=Integer.parseInt(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[3]).getValue()));
      }
 else       if (attributeExpressionExecutors[3].getReturnType() == Attribute.Type.LONG) {
        schedulerTimeout=Long.parseLong(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[3]).getValue()));
      }
 else {
        throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[3].getReturnType());
      }
    }
  }
 else {
    throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors.length + "String_Node_Str");
  }
}

Fixed version (ground truth):
@Override protected void init(ExpressionExecutor[] attributeExpressionExecutors,ExecutionPlanContext executionPlanContext){
  this.expiredEventChunk=new ComplexEventChunk<StreamEvent>();
  if (attributeExpressionExecutors.length >= 2 && attributeExpressionExecutors.length <= 4) {
    if ((attributeExpressionExecutors[0] instanceof ConstantExpressionExecutor)) {
      throw new ExecutionPlanValidationException("String_Node_Str");
    }
    if (attributeExpressionExecutors[0].getReturnType() != Attribute.Type.LONG) {
      throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[0].getReturnType());
    }
    timestampExpressionExecutor=attributeExpressionExecutors[0];
    if (attributeExpressionExecutors[1].getReturnType() == Attribute.Type.INT) {
      timeToKeep=(Integer)((ConstantExpressionExecutor)attributeExpressionExecutors[1]).getValue();
    }
 else     if (attributeExpressionExecutors[1].getReturnType() == Attribute.Type.LONG) {
      timeToKeep=(Long)((ConstantExpressionExecutor)attributeExpressionExecutors[1]).getValue();
    }
 else {
      throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[1].getReturnType());
    }
    if (attributeExpressionExecutors.length == 3) {
      isStartTimeEnabled=true;
      if (attributeExpressionExecutors[2].getReturnType() == Attribute.Type.INT) {
        startTime=Integer.parseInt(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[2]).getValue()));
      }
 else       if (attributeExpressionExecutors[2].getReturnType() == Attribute.Type.LONG) {
        startTime=Long.parseLong(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[2]).getValue()));
      }
 else {
        throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[2].getReturnType());
      }
    }
    if (attributeExpressionExecutors.length == 4) {
      if (attributeExpressionExecutors[3].getReturnType() == Attribute.Type.INT) {
        schedulerTimeout=Integer.parseInt(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[3]).getValue()));
      }
 else       if (attributeExpressionExecutors[3].getReturnType() == Attribute.Type.LONG) {
        schedulerTimeout=Long.parseLong(String.valueOf(((ConstantExpressionExecutor)attributeExpressionExecutors[3]).getValue()));
      }
 else {
        throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors[3].getReturnType());
      }
    }
  }
 else {
    throw new ExecutionPlanValidationException("String_Node_Str" + attributeExpressionExecutors.length + "String_Node_Str");
  }
}