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enforce arithmetic normalization

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-08-26 10:41:25 -07:00
parent 0d5cfe9292
commit 82a937d1af
5 changed files with 27 additions and 12 deletions
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17
src/ast/rewriter/poly_rewriter_def.h
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@ -704,8 +704,10 @@ br_status poly_rewriter<Config>::cancel_monomials(expr * lhs, expr * rhs, bool m
}
}
if (move && num_coeffs == 0 && is_numeral(rhs))
if (move && num_coeffs == 0 && is_numeral(rhs)) {
TRACE("mk_le_bug", tout << "no coeffs\n";);
return BR_FAILED;
}
for (unsigned i = 0; i < rhs_sz; i++) {
expr * arg = rhs_monomials[i];
@ -723,15 +725,21 @@ br_status poly_rewriter<Config>::cancel_monomials(expr * lhs, expr * rhs, bool m
}
normalize(c);
TRACE("mk_le_bug", tout << c << "\n";);
if (!has_multiple && num_coeffs <= 1) {
if (move) {
if (is_numeral(rhs))
if (is_numeral(rhs)) {
TRACE("mk_le_bug", tout << "rhs is numeral\n";);
return BR_FAILED;
}
}
else {
if (num_coeffs == 0 || is_numeral(rhs))
if (num_coeffs == 0 || is_numeral(rhs)) {
TRACE("mk_le_bug", tout << "rhs is numeral or no coeffs\n";);
return BR_FAILED;
}
}
}
@ -847,6 +855,7 @@ br_status poly_rewriter<Config>::cancel_monomials(expr * lhs, expr * rhs, bool m
new_lhs_monomials[0] = insert_c_lhs ? mk_numeral(c) : NULL;
lhs_result = mk_add_app(new_lhs_monomials.size() - lhs_offset, new_lhs_monomials.c_ptr() + lhs_offset);
rhs_result = mk_add_app(new_rhs_monomials.size() - rhs_offset, new_rhs_monomials.c_ptr() + rhs_offset);
TRACE("mk_le_bug", tout << lhs_result << " " << rhs_result << "\n";);
return BR_DONE;
}