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34 lines
478 B
Text
34 lines
478 B
Text
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; expect: unsat
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(set-logic QF_UFDT)
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(declare-datatypes
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((foo 0))
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(((A) (B) (C))))
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(declare-datatypes
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((tup 0))
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(((mk_tup (x foo) (y foo)))))
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(declare-datatypes
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((bar 0))
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(((mk_bar (b1 tup) (b2 Bool)))))
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(declare-fun x0 () bar)
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(declare-fun f (bar) bar)
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(assert
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(= (f x0)
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(mk_bar (b1 x0) (not (b2 x0)))))
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(assert
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(let ((x1 (f x0)))
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(= (f x1)
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(mk_bar (b1 x1) (not (b2 x1))))))
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; the goal: f(f(x0))=x0
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(assert (not (= x0 (f (f x0)))))
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(check-sat)
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