inconsistency

[Mohammad Mehdi Pourhashem]

Hi everyone,

I have a model (attached file, model.smt2) whose result must be UNSAT, and boolector itself returns the correct result:

boolector model.smt2

unsat

For sake of efficiency, I am using the following tool chain, but I receive a different result (SAT).

smt2 -Boolector-> aig

aig -aigtocnf-> cnf

cnf -cadical-> result

boolector model.smt2 --beta-reduce-all -dam -dai|aigtocnf|cadical -q

s SATISFIABLE

v 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 -20 -21 -22 -23 24 -25 -26

v -27 -28 29 -30 -31 -32 -33 -34 35 -36 -37 -38 -39 40 41 -42 -43 -44 -45 -46

v 47 -48 -49 50 -51 -52 53 54 -55 -56 57 -58 -59 60 61 -62 63 -64 -65 -66 -67

v 68 69 -70 -71 -72 -73 74 75 -76 -77 -78 -79 80 81 -82 83 -84 85 86

v 0

Am I doing something wrong?

I am using:

boolector 2.4.1

aiger 1.9.9

picosat-965

lingeling-bbc-9230380-160707

cadical sc17

Thank you in advance.

Regards,

Mehdi

[Armin Biere]

Hmm, there seems indeed to be an issue with this flow. I have tried
rewrite level
2, which is less aggressive than the default 3. Then the CNF becomes
unsatisfiable.
Thanks for reporting, we will look into it.

Armin

P.S. To use rewrite level 2 use '-rwl 2'.

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[Mohammad Mehdi Pourhashem]

Thank you so much Prof. Biere.

It works perfectly.

Regards,

Mehdi