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proof format

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-06-06 07:18:33 -07:00
parent ea365de820
commit b629960afb
8 changed files with 144 additions and 62 deletions
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46
src/sat/sat_drat.cpp
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@ -921,14 +921,19 @@ namespace sat {
case hint_type::bound_h:
ous << "bound ";
break;
case hint_type::cut_h:
ous << "cut ";
case hint_type::implied_eq_h:
ous << "implied_eq ";
break;
default:
UNREACHABLE();
break;
}
for (auto const& [q, l] : m_literals)
ous << rational(q) << " * " << l << " ";
for (auto const& [q, a, b] : m_eqs)
ous << rational(q) << " = " << a << " " << b << " ";
for (auto const& [a, b] : m_eqs)
ous << " = " << a << " " << b << " ";
for (auto const& [a, b] : m_diseqs)
ous << " != " << a << " " << b << " ";
return ous.str();
}
@ -954,9 +959,9 @@ namespace sat {
s += 5;
return true;
}
if (0 == strncmp(s, "cut", 3)) {
h.m_ty = hint_type::cut_h;
s += 3;
if (0 == strncmp(s, "implied_eq", 10)) {
h.m_ty = hint_type::implied_eq_h;
s += 10;
return true;
}
return false;
@ -982,6 +987,24 @@ namespace sat {
return sat::literal(r.get_unsigned(), false);
};
auto parse_coeff_literal = [&]() {
if (*s == '=') {
++s;
ws();
unsigned a = parse_coeff().get_unsigned();
ws();
unsigned b = parse_coeff().get_unsigned();
h.m_eqs.push_back(std::make_pair(a, b));
return true;
}
if (*s == '!' && *(s + 1) == '=') {
s += 2;
ws();
unsigned a = parse_coeff().get_unsigned();
ws();
unsigned b = parse_coeff().get_unsigned();
h.m_diseqs.push_back(std::make_pair(a, b));
return true;
}
rational coeff = parse_coeff();
ws();
if (*s == '*') {
@ -991,15 +1014,6 @@ namespace sat {
h.m_literals.push_back(std::make_pair(coeff, lit));
return true;
}
if (*s == '=') {
++s;
ws();
unsigned a = parse_coeff().get_unsigned();
ws();
unsigned b = parse_coeff().get_unsigned();
h.m_eqs.push_back(std::make_tuple(coeff, a, b));
return true;
}
return false;
};