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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-08-27 12:55:55 -07:00
commit f76815a009
4 changed files with 8 additions and 10 deletions
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6
src/ast/rewriter/arith_rewriter.cpp
View file

@ -681,8 +681,6 @@ br_status arith_rewriter::mk_div_core(expr * arg1, expr * arg2, expr_ref & resul
SASSERT(!is_int);
if (v2.is_zero()) {
return BR_FAILED;
//result = m_util.mk_div0(arg1);
//return BR_REWRITE1;
}
else if (m_util.is_numeral(arg1, v1, is_int)) {
result = m_util.mk_numeral(v1/v2, false);
@ -735,10 +733,6 @@ br_status arith_rewriter::mk_idiv_core(expr * arg1, expr * arg2, expr_ref & resu
result = m_util.mk_numeral(div(v1, v2), is_int);
return BR_DONE;
}
if (m_util.is_numeral(arg2, v2, is_int) && v2.is_zero()) {
//result = m_util.mk_idiv0(arg1);
//return BR_REWRITE1;
}
return BR_FAILED;
}

2
src/ast/simplifier/arith_simplifier_plugin.cpp
View file

@ -405,8 +405,6 @@ bool arith_simplifier_plugin::reduce(func_decl * f, unsigned num_args, expr * co
case OP_POWER: return false;
case OP_ABS: SASSERT(num_args == 1); mk_abs(args[0], result); break;
case OP_IRRATIONAL_ALGEBRAIC_NUM: return false;
case OP_DIV_0: return false;
case OP_IDIV_0: return false;
default:
return false;
}

3
src/smt/theory_arith_core.h
View file

@ -407,7 +407,8 @@ namespace smt {
template<typename Ext>
theory_var theory_arith<Ext>::internalize_idiv(app * n) {
found_underspecified_op(n);
rational r;
if (!m_util.is_numeral(n->get_arg(1), r) || r.is_zero()) found_underspecified_op(n);
theory_var s = mk_binary_op(n);
context & ctx = get_context();
app * mod = m_util.mk_mod(n->get_arg(0), n->get_arg(1));

7
src/smt/theory_lra.cpp
View file

@ -377,7 +377,12 @@ namespace smt {
}
else if (is_app(n) && a.get_family_id() == to_app(n)->get_family_id()) {
app* t = to_app(n);
found_not_handled(n);
if (a.is_div(n, n1, n2) && is_numeral(n2, r)) {
// skip
}
else {
found_not_handled(n);
}
internalize_args(t);
mk_enode(t);
theory_var v = mk_var(n);