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fix #3018

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-02-15 21:37:56 -10:00
parent 1d3e9fb76c
commit 839d6fd5be
1 changed files with 3 additions and 2 deletions
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5
src/math/subpaving/subpaving_t_def.h
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@ -81,7 +81,8 @@ public:
// Return the next variable to branch.
var operator()(typename context_t<C>::node * n) override {
typename context_t<C>::numeral_manager & nm = this->ctx()->nm();
SASSERT(this->ctx()->num_vars() > 0);
if (this->ctx()->num_vars() == 0)
return null_var;
var x = this->ctx()->splitting_var(n);
if (x == null_var)
x = 0;
@ -823,7 +824,7 @@ void context_t<C>::add_clause_core(unsigned sz, ineq * const * atoms, bool lemma
if (watch) {
for (unsigned i = 0; i < sz; i++) {
var x = c->m_atoms[i]->x();
if (i == 0 || x != c->m_atoms[i-1]->x())
if (x != null_var && (i == 0 || x != c->m_atoms[i-1]->x()))
m_wlist[x].push_back(watched(c));
}
}