Hi Ramana,

Thanks for fixing the issue. I have rebuilt HOL with 672f27ee9 included, now 
previous error in file "Test.art" around line 37270 has disappeared, but we got 
the next issue round line 99993:

FATAL ERROR: opentheory failed:
in Article.fromTextFile:
error in file "Test.art" around line 99993:
thm
13076
ref
…
Rule.alpha: not alpha-equivalent

Full logs are in attach.

Regards,

Chun Tian

Attachment: Test.ot.art
Description: Binary data

> Il giorno 29 apr 2017, alle ore 01:02, Ramana Kumar 
> <ramana.ku...@cl.cam.ac.uk> ha scritto:
> 
> Hi Chun,
> 
> Try with the latest update to HOL (672f27ee9), which I think may fix the 
> problem in HOL's OpenTheory Logging module.
> 
> Cheers,
> Ramana
> 
> On 28 April 2017 at 19:22, Chun Tian (binghe) <binghe.l...@gmail.com> wrote:
> Hi,
> 
> I see you have already consulted in OpenTheory mailing list and Joe Hurd has 
> suggested to use the development version of OpenTheory. Now I see this error:
> 
> Test.ot.art                                                             
> FAILED!
>                                                              ('@temp 
> @ind_typeTest0list'
>                                                                 a1))))))
>                                           ('@temp @ind_typeTest0list'
>                                              a1'))))
>                                ('@temp @ind_typeTest0list' a1')))) <=>
>                   HOL4.Test.@temp @ind_typeTest7 (abs r) = r)) in
>       P (HOL4.min. P)
>  different constants at path 10110 subterms: HOL4.min.@ vs HOL4.min.
>  different constants: HOL4.min.@ vs HOL4.min.
>  different constant names
> 
> I'm sorry for not understanding things at this level, only wondering: is this 
> indicating a bug in HOL's OpenTheory module?
> 
> Regards,
> 
> Chun
> 
> 
> 
> 
> On 26 April 2017 at 03:57, Ramana Kumar <ramana.ku...@cl.cam.ac.uk> wrote:
> Thanks Chun Tian,
> 
> I can reproduce the issue.
> 
> I tried finding out which theorems were causing the failure. They're rather 
> ugly (I will paste at the end of this email), but they look like valid inputs 
> to the "trans" function to me. It could be something to do with the fact that 
> some of the constants have been deleted, but I don't know why this would make 
> a difference to OpenTheory, which never deletes anything.
> 
> So maybe we should ask on the OpenTheory mailing list and supply the Test.art 
> file?

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