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fix #4131

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This commit is contained in:
Nikolaj Bjorner 2020-04-28 13:07:25 -07:00
parent e3f712b3cf
commit 1f9e022168
2 changed files with 2 additions and 5 deletions
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2
src/smt/diff_logic.h
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@ -264,13 +264,11 @@ class dl_graph {
public:
// An assignment is feasible if all edges are feasible.
bool is_feasible() const {
#ifdef Z3DEBUG
for (unsigned i = 0; i < m_edges.size(); ++i) {
if (!is_feasible(m_edges[i])) {
return false;
}
}
#endif
return true;
}

5
src/smt/theory_diff_logic_def.h
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@ -341,9 +341,8 @@ void theory_diff_logic<Ext>::pop_scope_eh(unsigned num_scopes) {
m_scopes.shrink(new_lvl);
unsigned num_edges = m_graph.get_num_edges();
m_graph.pop(num_scopes);
TRACE("arith", m_graph.display(tout););
SASSERT(m_graph.is_feasible());
if (true || (num_edges != m_graph.get_num_edges() && m_num_simplex_edges > 0)) {
CTRACE("arith", !m_graph.is_feasible(), m_graph.display(tout););
if (num_edges != m_graph.get_num_edges() && m_num_simplex_edges > 0) {
m_S.reset();
m_num_simplex_edges = 0;
m_objective_rows.reset();