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add empty/full regular languages, escape sequence fixes, check cancellation inside simplifier

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-01-13 20:13:17 +01:00
parent 57e1d4dc1f
commit e0215400e2
5 changed files with 91 additions and 29 deletions
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10
src/ast/simplifier/simplifier.cpp
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@ -127,11 +127,11 @@ bool simplifier::get_subst(expr * n, expr_ref & r, proof_ref & p) {
return false;
}
void simplifier::reduce_core(expr * n) {
if (!is_cached(n)) {
void simplifier::reduce_core(expr * n1) {
if (!is_cached(n1)) {
// We do not assume m_todo is empty... So, we store the current size of the todo-stack.
unsigned sz = m_todo.size();
m_todo.push_back(n);
m_todo.push_back(n1);
while (m_todo.size() != sz) {
expr * n = m_todo.back();
if (is_cached(n))
@ -142,6 +142,10 @@ void simplifier::reduce_core(expr * n) {
m_todo.pop_back();
reduce1(n);
}
if (m.canceled()) {
cache_result(n1, n1, 0);
break;
}
}
}
}