8000 solver returns undecipherable output · Issue #481 · LeventErkok/sbv · GitHub
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LeventErkok opened this issue Aug 22, 2019 · 0 comments
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solver returns undecipherable output #481

LeventErkok opened this issue Aug 22, 2019 · 0 comments
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@LeventErkok
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Received via email from Joshua Moerman.

import Data.SBV
import Data.SBV.Set
import Data.SBV.Tuple

problem = do
    let x = tuple (empty :: SSet Bool, empty :: SSet Bool)
    y <- exists_
    return $ x ./= y

We get:

*** Data.SBV.interpretSet: Unable to process solver output.
***
*** Kind    : {SBool}
*** Received: EApp [ECon "_",ECon "as-array",ECon "k!1"]
*** Reason  : Expected a set value, but couldn't decipher the solver output.
***
*** This is either a bug or something SBV currently does not support.
*** Please report this as a feature request!

Because z3 is producing weird output. Filed here: Z3Prover/z3#2517
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