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fix #4154

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This commit is contained in:
Nikolaj Bjorner 2020-04-28 13:17:00 -07:00
parent 1f9e022168
commit 1dc8b597b4
1 changed files with 7 additions and 3 deletions
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6
src/smt/theory_dense_diff_logic_def.h
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@ -797,7 +797,7 @@ namespace smt {
template<typename Ext> template<typename Ext>
void theory_dense_diff_logic<Ext>::fix_zero() { void theory_dense_diff_logic<Ext>::fix_zero() {
int num_vars = get_num_vars(); int num_vars = get_num_vars();
for (int v = 0; v < num_vars; ++v) { for (int v = 0; v < num_vars && v < (int)m_assignment.size(); ++v) {
enode * n = get_enode(v); enode * n = get_enode(v);
if (m_autil.is_zero(n->get_owner()) && !m_assignment[v].is_zero()) { if (m_autil.is_zero(n->get_owner()) && !m_assignment[v].is_zero()) {
numeral val = m_assignment[v]; numeral val = m_assignment[v];
@ -823,14 +823,18 @@ namespace smt {
void theory_dense_diff_logic<Ext>::init_model(model_generator & m) { void theory_dense_diff_logic<Ext>::init_model(model_generator & m) {
m_factory = alloc(arith_factory, get_manager()); m_factory = alloc(arith_factory, get_manager());
m.register_factory(m_factory); m.register_factory(m_factory);
if (!m_assignment.empty()) {
fix_zero(); fix_zero();
compute_epsilon(); compute_epsilon();
} }
}
template<typename Ext> template<typename Ext>
model_value_proc * theory_dense_diff_logic<Ext>::mk_value(enode * n, model_generator & mg) { model_value_proc * theory_dense_diff_logic<Ext>::mk_value(enode * n, model_generator & mg) {
theory_var v = n->get_th_var(get_id()); theory_var v = n->get_th_var(get_id());
SASSERT(v != null_theory_var); SASSERT(v != null_theory_var);
if (v >= (int)m_assignment.size())
return alloc(expr_wrapper_proc, m_factory->mk_num_value(rational::zero(), is_int(v)));
numeral const & val = m_assignment[v]; numeral const & val = m_assignment[v];
rational num = val.get_rational().to_rational() + m_epsilon * val.get_infinitesimal().to_rational(); rational num = val.get_rational().to_rational() + m_epsilon * val.get_infinitesimal().to_rational();
return alloc(expr_wrapper_proc, m_factory->mk_num_value(num, is_int(v))); return alloc(expr_wrapper_proc, m_factory->mk_num_value(num, is_int(v)));