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add option to control epsilon #7791

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#7791 reports on using model values during lex optimization that break soft constraints.
This is an artifact of using optimization where optimal values can be arbitrarily close to a rational.
In a way it is by design, but we give the user now an option to control the starting point for epsilon when converting infinitesimals into rationals.
This commit is contained in:
Nikolaj Bjorner 2025-08-17 16:47:23 -07:00
parent d8bf0e047f
commit c75b8ec752
7 changed files with 14 additions and 4 deletions
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src/params/theory_arith_params.cpp
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@ -41,6 +41,8 @@ void theory_arith_params::updt_params(params_ref const & _p) {
m_nl_arith_propagate_linear_monomials = p.arith_nl_propagate_linear_monomials();
m_nl_arith_optimize_bounds = p.arith_nl_optimize_bounds();
m_nl_arith_cross_nested = p.arith_nl_cross_nested();
auto eps = p.arith_epsilon();
m_arith_epsilon = rational(std::max(1, (int)(100000*eps)), 100000);
arith_rewriter_params ap(_p);
m_arith_eq2ineq = ap.eq2ineq();
@ -99,4 +101,5 @@ void theory_arith_params::display(std::ostream & out) const {
DISPLAY_PARAM(m_nl_arith_cross_nested);
DISPLAY_PARAM(m_arith_validate);
DISPLAY_PARAM(m_arith_dump_lemmas);
DISPLAY_PARAM(m_arith_epsilon);
}