re-syntax.smt2 « strings « regress0 « regress « test - cvc5.git - CVC4 is an efficient open-source automatic theorem prover for satisfiability modulo theories (SMT) problems.

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CVC4 is an efficient open-source automatic theorem prover for satisfiability modulo theories (SMT) problems.

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; COMMAND-LINE: --lang=smt2.6
; EXPECT: unsat
(set-logic ALL)
(set-info :status unsat)
(declare-fun x () String)

(assert (or (str.in_re x re.none) (not (str.in_re x re.all))))

(check-sat)

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