Is there an approach that allows the TLA+ Toolbox to read the initial state from a predefined text file?

[Guo Hua]

I have multiple TLA+ specifications with the same initial state space. The initial state space was computed through a lengthy computation and would require a significant amount of time. Is there an approach that allows the TLA+ Toolbox to read the initial state from a predefined text file? This file could potentially be the output of another model checking process, thus saving time.

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Guo

[Hillel Wayne]

I don't think there's a built-in way to do this, but you could try generating the initial state as a TLC checkpoint and then use the checkpoint recovery option. I have no idea how that would behave if you try to use the checkpoint in a different spec, though.

H

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[Markus Kuppe]

You can efficiently serialize and deserialize TLA+ values with the IO(Des|S)erialize operators [1] from the CommunityModules. Less efficient serialization can be done with the help of the Json module [2].

Markus

[1] https://github.com/tlaplus/CommunityModules/blob/f070b68b02cf5b6d085797402374d85f739c167e/modules/IOUtils.tla#L9-L11
[2] https://github.com/tlaplus/CommunityModules/blob/master/modules/Json.tla