JsonRpcError bug report

[hjorthjort]

I'm getting a DecidePredicateUnknown followed by a (possibly) related failure.

Bug report available at https://github.com/runtimeverification/mev-searcher/issues/64

[palinatolmach]

The bug report is here: uniswap-frontrun.zip

[geo2a]

This PR to pyk (that depends on another PR to hs-backend-booster) may make these failures a little more discoverable. Just leaving this here to track.

[hjorthjort]

@geo2a which PR?

[geo2a]

Sorry, I was talking about this PR: runtimeverification/pyk#744