BtorExp* boolector_propt::boolector_literal(literalt l)
{
BtorExp *literal_l;
std::string literal_s;
if(l==const_literal(false))
return boolector_false(boolector_ctx);
else if(l==const_literal(true))
return boolector_true(boolector_ctx);
literal_l = convert_literal(l.var_no());
if(l.sign())
return boolector_not(boolector_ctx, literal_l);
return literal_l;
}
literalt cvc_convt::convert(const exprt &expr)
{
//out << "%% E: " << expr << std::endl;
if(expr.type().id()!=ID_bool)
{
std::string msg="cvc_convt::convert got "
"non-boolean expression: ";
msg+=expr.pretty();
throw msg;
}
// Three special cases in which we don't need to generate
// a handle.
if(expr.is_true())
return const_literal(true);
else if(expr.is_false())
return const_literal(false);
else if(expr.id()==ID_literal)
return to_literal_expr(expr).get_literal();
// Generate new handle
literalt l(no_boolean_variables, false);
no_boolean_variables++;
find_symbols(expr);
// define new handle
out << "ASSERT ";
convert_literal(l);
out << " <=> (";
convert_expr(expr);
out << ");" << std::endl << std::endl;
return l;
}
