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smul no overflow

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-02-16 18:55:07 +02:00
parent 89d6f1c191
commit 8c9835bca6
24 changed files with 376 additions and 63 deletions
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12
src/sat/smt/bv_polysat.cpp
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@ -57,6 +57,8 @@ namespace bv {
case OP_SGT: polysat_le<true, false, true>(a); break;
case OP_BUMUL_NO_OVFL: polysat_umul_noovfl(a); break;
case OP_BSMUL_NO_OVFL: polysat_smul_noovfl(a); break;
case OP_BUDIV_I: polysat_div_rem_i(a, true); break;
case OP_BUREM_I: polysat_div_rem_i(a, false); break;
@ -74,7 +76,6 @@ namespace bv {
case OP_BSDIV:
case OP_BSREM:
case OP_BSMOD:
case OP_BSMUL_NO_OVFL:
case OP_BSMUL_NO_UDFL:
case OP_BSDIV_I:
case OP_BSREM_I:
@ -110,6 +111,15 @@ namespace bv {
a->m_sc = sc;
}
void solver::polysat_smul_noovfl(app* e) {
auto p = expr2pdd(e->get_arg(0));
auto q = expr2pdd(e->get_arg(1));
auto sc = ~m_polysat.smul_ovfl(p, q);
sat::literal lit = expr2literal(e);
atom* a = mk_atom(lit.var());
a->m_sc = sc;
}
void solver::polysat_div_rem_i(app* e, bool is_div) {
auto p = expr2pdd(e->get_arg(0));
auto q = expr2pdd(e->get_arg(1));

1
src/sat/smt/bv_solver.h
View file

@ -281,6 +281,7 @@ namespace bv {
void polysat_num(app* a);
void polysat_mkbv(app* a);
void polysat_umul_noovfl(app* e);
void polysat_smul_noovfl(app* e);
void polysat_div_rem_i(app* e, bool is_div);
void polysat_div_rem(app* e, bool is_div);
void polysat_bit2bool(atom* a, expr* e, unsigned idx);