issue6635-rre.smt2 « strings « regress1 « 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: --strings-exp --re-elim --re-elim-agg
; EXPECT: unsat
(set-logic ALL)
(declare-fun a () String)
(assert (str.in_re (str.replace_re a (re.++ (str.to_re "A") (re.union (str.to_re "") (str.to_re (str.from_code (str.len a))))) "AB") (re.+ (str.to_re "A"))))
(check-sat)

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