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partial fix to model generation bug for non-linear constraints: avoid epsilon refinment for non-shared variables

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-08-07 20:39:20 +09:00
parent e17af8a5de
commit 3d995648ee
3 changed files with 11 additions and 5 deletions
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12
src/smt/theory_arith_nl.h
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@ -654,6 +654,7 @@ namespace smt {
}
return get_value(v, computed_epsilon) == val;
}
/**
\brief Return true if for every monomial x_1 * ... * x_n,
@ -2309,8 +2310,9 @@ namespace smt {
if (m_nl_monomials.empty())
return FC_DONE;
if (check_monomial_assignments())
if (check_monomial_assignments()) {
return FC_DONE;
}
if (!m_params.m_nl_arith)
return FC_GIVEUP;
@ -2338,9 +2340,10 @@ namespace smt {
if (!max_min_nl_vars())
return FC_CONTINUE;
if (check_monomial_assignments())
if (check_monomial_assignments()) {
return m_liberal_final_check || !m_changed_assignment ? FC_DONE : FC_CONTINUE;
}
svector<theory_var> vars;
get_non_linear_cluster(vars);
@ -2391,8 +2394,9 @@ namespace smt {
}
while (m_nl_strategy_idx != old_idx);
if (check_monomial_assignments())
if (check_monomial_assignments()) {
return m_liberal_final_check || !m_changed_assignment ? FC_DONE : FC_CONTINUE;
}
TRACE("non_linear", display(tout););