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[tlaplus] tlaps example



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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