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e08ec8dc9e
This PR translates the strings and sequences examples from the base python API to the pythonic API.
47 lines
1.4 KiB
Python
47 lines
1.4 KiB
Python
#!/usr/bin/env python
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###############################################################################
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# Top contributors (to current version):
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# Yoni Zohar
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#
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# This file is part of the cvc5 project.
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#
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# Copyright (c) 2009-2024 by the authors listed in the file AUTHORS
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# in the top-level source directory and their institutional affiliations.
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# All rights reserved. See the file COPYING in the top-level source
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# directory for licensing information.
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# ############################################################################
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#
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# A simple demonstration of the solving capabilities of the cvc5 strings solver. A simple translation of the base python API
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# example.
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##
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from cvc5.pythonic import *
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if __name__ == "__main__":
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x = Const("x", SeqSort(IntSort()))
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y = Const("y", SeqSort(IntSort()))
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# Empty sequence
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empty = Empty(SeqSort(IntSort()))
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# Sequence concatenation: x.y.empty
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concat = Concat( x, y, empty)
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# Sequence length: |x.y.empty|
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concat_len = Length(concat)
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# |x.y.empty| > 1
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formula1 = (concat_len > 1)
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# Sequence unit: seq(1)
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unit = Unit(IntVal(1))
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# x = seq(1)
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formula2 = (x == unit)
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# Make a query
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q = And(formula1, formula2)
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# Check satisfiability
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s = Solver()
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result = s.check([q])
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assert result == sat
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m = s.model()
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print("x = {}".format(m[x]))
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print("y = {}".format(m[y]))
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