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fix #2779

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This commit is contained in:
Nikolaj Bjorner 2019-12-03 14:49:58 +01:00
parent 7f61d08496
commit eec153bb57
4 changed files with 22 additions and 4 deletions
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18
src/smt/diff_logic.h
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@ -915,6 +915,24 @@ public:
// so the graph is disconnected.
// assumption: the current assignment is feasible.
//
void set_to_zero(unsigned n, dl_var const* vs) {
for (unsigned i = 0; i < n; ++i) {
dl_var v = vs[i];
if (!m_assignment[v].is_zero()) {
set_to_zero(v);
for (unsigned j = 0; j < n; ++j) {
dl_var w = vs[j];
if (!m_assignment[w].is_zero()) {
enable_edge(add_edge(v, w, numeral(0), explanation()));
enable_edge(add_edge(w, v, numeral(0), explanation()));
SASSERT(is_feasible());
}
}
return;
}
}
}
void set_to_zero(dl_var v, dl_var w) {
if (!m_assignment[v].is_zero()) {
set_to_zero(v);