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Add arith.nl.nra_check_assignment_max_fail parameter

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Replace hardcoded failure threshold with configurable parameter (default 10).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Lev Nachmanson 2026-03-12 16:38:06 -10:00
parent 6c27140bc9
commit 7c9f930ef1
2 changed files with 2 additions and 1 deletions
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2
src/math/lp/nla_core.cpp
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@ -1330,7 +1330,7 @@ lbool core::check(unsigned level) {
return l_false;
}
if (no_effect() && params().arith_nl_nra_check_assignment() && m_check_assignment_fail_cnt < 10) {
if (no_effect() && params().arith_nl_nra_check_assignment() && m_check_assignment_fail_cnt < params().arith_nl_nra_check_assignment_max_fail()) {
scoped_limits sl(m_reslim);
sl.push_child(&m_nra_lim);
ret = m_nra.check_assignment();

1
src/params/smt_params_helper.pyg
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@ -61,6 +61,7 @@ def_module_params(module_name='smt',
('arith.nl', BOOL, True, '(incomplete) nonlinear arithmetic support based on Groebner basis and interval propagation, relevant only if smt.arith.solver=2'),
('arith.nl.nra', BOOL, True, 'call nra_solver when incremental linearization does not produce a lemma, this option is ignored when arith.nl=false, relevant only if smt.arith.solver=6'),
('arith.nl.nra_check_assignment', BOOL, True, 'call check_assignment in nra_solver to verify current assignment against nlsat constraints'),
('arith.nl.nra_check_assignment_max_fail', UINT, 10, 'maximum consecutive check_assignment failures before disabling it'),
('arith.nl.branching', BOOL, True, 'branching on integer variables in non linear clusters'),
('arith.nl.expensive_patching', BOOL, False, 'use the expensive of monomials'),
('arith.nl.rounds', UINT, 1024, 'threshold for number of (nested) final checks for non linear arithmetic, relevant only if smt.arith.solver=2'),