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48 lines
1.3 KiB
Python
48 lines
1.3 KiB
Python
#!/usr/bin/env python
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###############################################################################
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# Top contributors (to current version):
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# Gereon Kremer, Aina Niemetz, Alex Ozdemir
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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) 2009-2022 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 transcendental extension.
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##
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import cvc5
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from cvc5 import Kind
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if __name__ == "__main__":
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slv = cvc5.Solver()
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slv.setLogic("QF_NRAT")
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real = slv.getRealSort()
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# Variables
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x = slv.mkConst(real, "x")
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y = slv.mkConst(real, "y")
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# Helper terms
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two = slv.mkReal(2)
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pi = slv.mkPi()
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twopi = slv.mkTerm(Kind.MULT, two, pi)
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ysq = slv.mkTerm(Kind.MULT, y, y)
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sinx = slv.mkTerm(Kind.SINE, x)
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# Formulas
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x_gt_pi = slv.mkTerm(Kind.GT, x, pi)
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x_lt_tpi = slv.mkTerm(Kind.LT, x, twopi)
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ysq_lt_sinx = slv.mkTerm(Kind.LT, ysq, sinx)
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slv.assertFormula(x_gt_pi)
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slv.assertFormula(x_lt_tpi)
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slv.assertFormula(ysq_lt_sinx)
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print("cvc5 should report UNSAT")
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print("Result from cvc5 is:", slv.checkSat())
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