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fixes to githup issue #133 and stackoverflow reported bug on assertion violation in poly_simplifier_plugin

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2015-06-21 13:49:15 -07:00
parent 6f0d76a62e
commit 4675643271
2 changed files with 11 additions and 3 deletions
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10
src/ast/simplifier/poly_simplifier_plugin.cpp
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@ -69,14 +69,20 @@ expr * poly_simplifier_plugin::mk_mul(unsigned num_args, expr * const * args) {
}
expr * poly_simplifier_plugin::mk_mul(numeral const & c, expr * body) {
numeral c_prime;
numeral c_prime, d;
c_prime = norm(c);
if (c_prime.is_zero())
return 0;
if (body == 0)
return mk_numeral(c_prime);
if (c_prime.is_one())
return body;
return body;
if (is_numeral(body, d)) {
c_prime = norm(c_prime*d);
if (c_prime.is_zero())
return 0;
return mk_numeral(c_prime);
}
set_curr_sort(body);
expr * args[2] = { mk_numeral(c_prime), body };
return mk_mul(2, args);