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fixes to intblast encoding and more arithmetic rewriters

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-12-17 18:15:51 -08:00
parent bb99f44214
commit 2f2bf749b9
3 changed files with 46 additions and 17 deletions
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10
src/sat/smt/intblast_solver.cpp
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@ -37,7 +37,6 @@ namespace intblast {
euf::theory_var solver::mk_var(euf::enode* n) {
auto r = euf::th_euf_solver::mk_var(n);
ctx.attach_th_var(n, this, r);
TRACE("bv", tout << "mk-var: v" << r << " " << ctx.bpp(n) << "\n";);
return r;
}
@ -98,7 +97,7 @@ namespace intblast {
ensure_translated(y);
m_args.reset();
m_args.push_back(a.mk_sub(translated(x), translated(y)));
set_translated(e, m.mk_eq(umod(x, 0), a.mk_int(0)));
set_translated(e, m.mk_eq(umod(x, 0), a.mk_int(0)));
}
m_preds.push_back(e);
ctx.push(push_back_vector(m_preds));
@ -148,7 +147,7 @@ namespace intblast {
auto a = expr2literal(e);
auto b = mk_literal(r);
ctx.mark_relevant(b);
// verbose_stream() << "add-predicate-axiom: " << mk_pp(e, m) << " == " << r << "\n";
TRACE("intblast", tout << "add-predicate-axiom: " << mk_bounded_pp(e, m) << " \n" << r << "\n");
add_equiv(a, b);
}
return true;
@ -606,9 +605,10 @@ namespace intblast {
unsigned lo, hi;
expr* old_arg;
VERIFY(bv.is_extract(e, lo, hi, old_arg));
r = arg(0);
if (lo > 0)
r = a.mk_idiv(r, a.mk_int(rational::power_of_two(lo)));
r = a.mk_idiv(umod(old_arg, 0), a.mk_int(rational::power_of_two(lo)));
else
r = arg(0);
break;
}
case OP_BV_NUM: {