@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    InstructionTransfer transfer = (InstructionTransfer)o;
    return myOffset.equals(transfer.myOffset) && myVarsToFlush.equals(transfer.myVarsToFlush);
  }
@Override
  public boolean equals(Object o)