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49 lines
1.4 KiB
Python
49 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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# Aina Niemetz, Gereon Kremer, 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) 2009-2025 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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tm = cvc5.TermManager()
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slv = cvc5.Solver(tm)
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slv.setLogic("QF_NRAT")
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real = tm.getRealSort()
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# Variables
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x = tm.mkConst(real, "x")
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y = tm.mkConst(real, "y")
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# Helper terms
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two = tm.mkReal(2)
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pi = tm.mkPi()
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twopi = tm.mkTerm(Kind.MULT, two, pi)
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ysq = tm.mkTerm(Kind.MULT, y, y)
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sinx = tm.mkTerm(Kind.SINE, x)
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# Formulas
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x_gt_pi = tm.mkTerm(Kind.GT, x, pi)
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x_lt_tpi = tm.mkTerm(Kind.LT, x, twopi)
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ysq_lt_sinx = tm.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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