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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-05-06 18:53:05 -07:00
parent 1d724de915
commit a1ded7f1ec
1 changed files with 6 additions and 7 deletions
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13
src/math/polysat/fixplex_def.h
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@ -738,7 +738,7 @@ namespace polysat {
if (is_free(v)) {
if (free_v != null_var)
return;
if (c != 1 && c + 1 != 1)
if (c != 1 && c + 1 != 0)
return;
free_v = v;
free_c = c;
@ -768,27 +768,26 @@ namespace polysat {
}
for (auto const& e : M.row_entries(r)) {
var_t v = e.var();
SASSERT(!is_free(v));
numeral const& c = e.coeff();
numeral lo_other = lo_sum - lo(v) * c;
numeral hi_other = hi_sum - (hi(v) - 1) * c;
numeral hi_other = hi_sum - (hi(v) - 1) * c - 1;
//
// compute [lo_other,hi_other[ as range of
// other variables.
//
numeral lo1 = 1 - hi_other;
numeral hi1 = 1 - lo_other;
if (lo(v) < lo1) {
if (lo(v) < lo1)
new_bound(r, v, lo1, hi(v));
}
if (hi(v) > hi1) {
if (hi(v) > hi1)
new_bound(r, v, lo(v), hi1);
}
}
}
template<typename Ext>
void fixplex<Ext>::new_bound(row const& r, var_t x, numeral const& l, numeral const& h) {
IF_VERBOSE(0, verbose_stream() << "new-bound v" << x << " [" << l << "," << h << "[\n");
}
template<typename Ext>