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more aggressive term tightening

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2025-03-14 16:38:37 -10:00 • committed by Lev Nachmanson
parent 50418fa170
commit 0a3c118701
3 changed files with 96 additions and 45 deletions
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25
src/math/lp/lar_solver.cpp
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@ -2547,7 +2547,30 @@ namespace lp {
}
return out;
}
std::string lar_solver::get_bounds_string(unsigned j) const {
mpq lb, ub;
bool is_strict_lower = false, is_strict_upper = false;
u_dependency* dep = nullptr;
bool has_lower = has_lower_bound(j, dep, lb, is_strict_lower);
bool has_upper = has_upper_bound(j, dep, ub, is_strict_upper);
std::ostringstream oss;
if (!has_lower && !has_upper) {
oss << "(-oo, oo)";
}
else if (has_lower && !has_upper) {
oss << (is_strict_lower ? "(" : "[") << lb << ", oo)";
}
else if (!has_lower && has_upper) {
oss << "(-oo, " << ub << (is_strict_upper ? ")" : "]");
}
else { // has both bounds
oss << (is_strict_lower ? "(" : "[") << lb << ", " << ub << (is_strict_upper ? ")" : "]");
}
return oss.str();
}
// Helper function to format constants in SMT2 format
std::string format_smt2_constant(const mpq& val) {
if (val.is_neg()) {