Add implementation of setTimeout for CVC5

[superaxander]

I'm not sure if there is a specific reason why timeouts are not set for the CVC5 prover? The comment says that cvc5 does not support setting the timeout after instantiation but in my testing it works fine. (although it can sometimes exceed the timeout because it's not very strict about keeping to it) I looked through the release notes but couldn't find mention of this being a new feature.

[marcoeilers]

Thanks a lot! I have no idea why whoever wrote the code thought this wasn't supported, but it's clearly working now.

[marcoeilers]

Ah, maybe this is it: With your change (and with CVC5 version 1.3.0), if I enable resource bounds, I get the following error from CVC5:
invalid call to 'setOption' for option 'rlimit-per', solver is already fully initialized
Maybe this used to also happen for tlimit?

[superaxander]

There seems to be a very simple list of options that are allowed to be changed, I believe reproducible-resource-limit might equate to rlimit-per. https://github.com/cvc5/cvc5/blob/58cda4cdc96a9cdc0e267ba4f4ddd00bcd653a1f/src/api/cpp/cvc5.cpp#L8654-L8659

[superaxander]

Yes just tested it, changing rlimit-per to reproducible-resource-limit works. Kind of a strange and undocumented thing.

[marcoeilers]

How weird. Elsewhere that's just listed as an alias for rlimit-per. tlimit-per just doesn't seem to have an alias.
But okay, who cares, as long as it works. Thanks again for spotting and fixing this!

[marcoeilers]

Turns out there was actually a moment when tlimit-per was not on the list: cvc5/cvc5@53c2bc3