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Corner-case fix for smt::solver::pop_core

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This commit is contained in:
Christoph M. Wintersteiger 2017-01-12 12:49:26 +00:00
parent 650ea7b9cc
commit 2458db30cf
1 changed files with 13 additions and 10 deletions
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23
src/smt/smt_solver.cpp
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@ -113,16 +113,19 @@ namespace smt {
}
virtual void pop_core(unsigned n) {
unsigned lvl = m_scopes.size();
SASSERT(n <= lvl);
unsigned new_lvl = lvl - n;
unsigned old_sz = m_scopes[new_lvl];
for (unsigned i = m_assumptions.size() - 1; i >= old_sz; i--) {
expr * key = m_assumptions[i].get();
SASSERT(m_name2assertion.contains(key));
expr * value = m_name2assertion.find(key);
m.dec_ref(value);
m_name2assertion.erase(key);
unsigned cur_sz = m_assumptions.size();
if (n > 0 && cur_sz > 0) {
unsigned lvl = m_scopes.size();
SASSERT(n <= lvl);
unsigned new_lvl = lvl - n;
unsigned old_sz = m_scopes[new_lvl];
for (unsigned i = cur_sz - 1; i >= old_sz; i--) {
expr * key = m_assumptions[i].get();
SASSERT(m_name2assertion.contains(key));
expr * value = m_name2assertion.find(key);
m.dec_ref(value);
m_name2assertion.erase(key);
}
}
m_context.pop(n);
}