Stream: Archive Mirror: Isabelle Users Mailing List

Topic: [isabelle] Error in automaton example


view this post on Zulip Email Gateway (Aug 18 2022 at 09:38):

From: Gabriele Pozzani <gabriele.pozzani@gmail.com>
Dear all,
I have opened and analyzed the Cockpit example about IOA but when Isabelle
reaches automaton Al_before_Ack it stops with the follow error

*** Type unification failed
*** Type error in application: Incompatible operand type


*** Operator:
*** (action_case
*** (l(a::event).
*** (True OR
*** ((APonR_incl'::bool) =
*** (if (a = PonR) then True else (APonR_incl::bool)))))) ::
*** (event => bool) => (event => bool) => event action => bool
*** Operand: (l(a::?'a). False) :: ?'a => bool


*** The error(s) above occurred in axiom "Al_before_Ack_trans_def"
*** At command "automaton".

I don't understand where is the problem.
The type unification is internal to this automaton or with the previous
automata?

Similar errors occur with other examples and with a my theory.

Can anyone help me?

Thanks in advance for the help.

Gabriele

view this post on Zulip Email Gateway (Aug 18 2022 at 09:38):

From: Makarius <makarius@sketis.net>
I cannot reproduce this problem. It works for me as follows:

* Start Isabelle2005 with the IOA image

* Issue the following ML code from src/HOLCF/IOA/Modelcheck/ROOT.ML:

ML {*
use "../../../HOL/Modelcheck/mucke_oracle.ML";
with_path "../../../HOL/Modelcheck" time_use_thy "MuIOAOracle";
*}

* Visit src/HOLCF/IOA/Modelcheck/Cockpit.thy and assert the whole
buffer.

Makarius


Last updated: Nov 21 2024 at 12:39 UTC