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[SMTChecker] Implement uninterpreted functions and use it for blockhash()

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This commit is contained in:
Leonardo Alt
2018-11-15 09:12:42 +01:00
parent 92ebf66067
commit 70bb0eaf95
17 changed files with 110 additions and 27 deletions
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libsolidity/formal/SMTLib2Interface.cpp
+18 -2
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@@ -64,9 +64,12 @@ void SMTLib2Interface::pop()
m_accumulatedOutput.pop_back();
}
void SMTLib2Interface::declareFunction(string _name, Sort _domain, Sort _codomain)
void SMTLib2Interface::declareFunction(string _name, vector<Sort> const& _domain, Sort _codomain)
{
// TODO Use domain and codomain as key as well
string domain("");
for (auto const& sort: _domain)
domain += toSmtLibSort(sort) + ' ';
if (!m_functions.count(_name))
{
m_functions.insert(_name);
@@ -74,7 +77,7 @@ void SMTLib2Interface::declareFunction(string _name, Sort _domain, Sort _codomai
"(declare-fun |" +
_name +
"| (" +
(_domain == Sort::Int ? "Int" : "Bool") +
domain +
") " +
(_codomain == Sort::Int ? "Int" : "Bool") +
")"
@@ -140,6 +143,19 @@ string SMTLib2Interface::toSExpr(Expression const& _expr)
return sexpr;
}
string SMTLib2Interface::toSmtLibSort(Sort _sort)
{
switch (_sort)
{
case Sort::Int:
return "Int";
case Sort::Bool:
return "Bool";
default:
solAssert(false, "Invalid SMT sort");
}
}
void SMTLib2Interface::write(string _data)
{
solAssert(!m_accumulatedOutput.empty(), "");