Re: [tlaplus] tlaps example

[Stephan Merz]

Hello,

for me this theorem goes through (with OBVIOUS), using the current distribution:

tlapm --version
1.4.5 (build 33809)

I'm afraid there must be a problem with your installation.

Stephan

On 27 Apr 2020, at 14:56, Alex Tim <alex.t...@gmail.com> wrote:

Hello

I'm reading simple examples on tlaps

https://sriramsami.com/tlaps/

the author said

that the theorem

THEOREM Transitive == 
    ASSUME 
        NEW X \in Nat,
        NEW Y \in Nat,
        NEW Z \in Nat,
        X > Y,
        Y > Z
        PROVE X > Z + 1


can be proved automatically with 
PROOF OBVIOUS

but it fails for me. Should i explicitly use a nonstandard solver i.e. CVC4?

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[Alex Tim]

Thanks, Stephan for your replies.

But ... Interesting obligations window shows all solvers used. No?

by the way... i've updated my ide to 1.7.0

понедельник, 27 апреля 2020 г., 16:00:18 UTC+3 пользователь Stephan Merz написал:

Hello,

for me this theorem goes through (with OBVIOUS), using the current distribution:

tlapm --version
1.4.5 (build 33809)

I'm afraid there must be a problem with your installation.

Stephan

On 27 Apr 2020, at 14:56, Alex Tim <alex....@gmail.com> wrote:

Hello

I'm reading simple examples on tlaps

https://sriramsami.com/tlaps/

the author said

that the theorem

THEOREM Transitive == 
    ASSUME 
        NEW X \in Nat,
        NEW Y \in Nat,
        NEW Z \in Nat,
        X > Y,
        Y > Z
        PROVE X > Z + 1


can be proved automatically with 
PROOF OBVIOUS

but it fails for me. Should i explicitly use a nonstandard solver i.e. CVC4?

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