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catch and fail on an exception

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2025-12-04 09:54:48 -10:00
parent c58652bf5b
commit 9a72bbd4ba
1 changed files with 9 additions and 1 deletions
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10
src/nlsat/levelwise.cpp
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@ -12,6 +12,7 @@
#include <queue> #include <queue>
#include "math/polynomial/polynomial_cache.h" #include "math/polynomial/polynomial_cache.h"
#include "math/polynomial/polynomial.h" #include "math/polynomial/polynomial.h"
#include "util/z3_exception.h"
bool is_set(unsigned k) { return static_cast<int>(k) != -1; } bool is_set(unsigned k) { return static_cast<int>(k) != -1; }
@ -821,7 +822,14 @@ or
SASSERT(is_square_free(p.m_poly)); SASSERT(is_square_free(p.m_poly));
scoped_anum_vector roots(m_am); scoped_anum_vector roots(m_am);
SASSERT(max_var(p.m_poly) == m_level); SASSERT(max_var(p.m_poly) == m_level);
m_am.isolate_roots(p.m_poly, undef_var_assignment(sample(), m_level), roots); try {
m_am.isolate_roots(p.m_poly, undef_var_assignment(sample(), m_level), roots);
}
catch (z3_exception const& ex) {
TRACE(lws, tout << "isolate_roots failed: " << ex.what() << "\n";);
m_fail = true;
return;
}
if (roots.size() == 0) { if (roots.size() == 0) {
/* Rule 4.6. Let i ∈ N, R ⊆ Ri, s ∈ R_{i−1}, and realRoots(p(s, xi )) = ∅. /* Rule 4.6. Let i ∈ N, R ⊆ Ri, s ∈ R_{i−1}, and realRoots(p(s, xi )) = ∅.
sample(s)(R), an_del(p)(R) ⊢ sgn_inv(p)(R) */ sample(s)(R), an_del(p)(R) ⊢ sgn_inv(p)(R) */