mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-12 12:08:18 +00:00
Code Activity

build fixes

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-10-14 13:45:42 -07:00
parent 47f1c86f93
commit a39d4adf5b
1 changed files with 3 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/math/lp/monomial_bounds.cpp
View file

@ -143,7 +143,6 @@ namespace nla {
return propagate_value(range, v); return propagate_value(range, v);
rational r; rational r;
if (should_propagate_upper(range, v, p)) { // v.upper^p > range.upper if (should_propagate_upper(range, v, p)) { // v.upper^p > range.upper
SASSERT(c().has_upper_bound(v));
lp::explanation ex; lp::explanation ex;
dep.get_upper_dep(range, ex); dep.get_upper_dep(range, ex);
// p even, range.upper < 0, v^p >= 0 -> infeasible // p even, range.upper < 0, v^p >= 0 -> infeasible
@ -154,16 +153,16 @@ namespace nla {
return true; return true;
} }
// v.upper < 0, but v^p > range.upper -> infeasible. // v.upper < 0, but v^p > range.upper -> infeasible.
if (p % 2 == 0 && c().get_upper_bound(v) < 0) { if (p % 2 == 0 && c().has_upper_bound(v) && c().get_upper_bound(v) < 0) {
++c().lra.settings().stats().m_nla_propagate_bounds; ++c().lra.settings().stats().m_nla_propagate_bounds;
new_lemma lemma(c(), "range requires a non-negative upper bound"); new_lemma lemma(c(), "range requires a non-negative upper bound");
lemma &= ex; lemma &= ex;
lemma.explain_existing_upper_bound(v); lemma.explain_existing_upper_bound(v);
return true; return true;
} }
SASSERT(p % 2 == 1 || c().get_upper_bound(v) >= 0);
if (rational(dep.upper(range)).root(p, r)) { if (rational(dep.upper(range)).root(p, r) && (p % 2 == 1 || c().has_upper_bound(v))) {
SASSERT(p % 2 == 1 || c().get_upper_bound(v) >= 0);
// v = -2, [-4,-3]^3 < v^3 -> add bound v <= -3 // v = -2, [-4,-3]^3 < v^3 -> add bound v <= -3
// v = -2, [-1,+1]^2 < v^2 -> add bound v >= -1 // v = -2, [-1,+1]^2 < v^2 -> add bound v >= -1
++c().lra.settings().stats().m_nla_propagate_bounds; ++c().lra.settings().stats().m_nla_propagate_bounds;