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fix #2821

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-12-27 12:16:28 -08:00
parent 1d77e3e19f
commit dd07d21f6c
2 changed files with 7 additions and 2 deletions
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5
src/ast/expr2polynomial.cpp
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@ -181,13 +181,16 @@ struct expr2polynomial::imp {
case OP_POWER: { case OP_POWER: {
rational k; rational k;
SASSERT(t->get_num_args() == 2); SASSERT(t->get_num_args() == 2);
if (!m_autil.is_numeral(t->get_arg(1), k) || !k.is_int() || !k.is_unsigned()) { if (!m_autil.is_numeral(t->get_arg(1), k) || !k.is_unsigned()) {
if (m_use_var_idxs) if (m_use_var_idxs)
throw_not_polynomial(); throw_not_polynomial();
else else
store_var_poly(t); store_var_poly(t);
return true; return true;
} }
if (k.is_zero()) {
throw_not_polynomial();
}
push_frame(t); push_frame(t);
return false; return false;
} }

2
src/tactic/arith/probe_arith.cpp
View file

@ -500,6 +500,8 @@ struct is_non_nira_functor {
case OP_POWER: case OP_POWER:
if (m_linear) if (m_linear)
throw_found(n); throw_found(n);
if (!u.is_numeral(n->get_arg(0), r) || !r.is_unsigned() || r.is_zero())
throw_found(n);
return; return;
case OP_IRRATIONAL_ALGEBRAIC_NUM: case OP_IRRATIONAL_ALGEBRAIC_NUM:
if (m_linear || !m_real) if (m_linear || !m_real)