Erase balances when delegatecall is seen

libsolidity/formal/SMTEncoder.cpp

@@ -2281,6 +2281,13 @@ void SMTEncoder::resetStorageVariables()
 	});
 }
 
+void SMTEncoder::resetBalances()
+{
+	// TODO this should be changed to `balances` only
+	// when `state` gets more members.
+	state().newState();
+}
+
 void SMTEncoder::resetReferences(VariableDeclaration const& _varDecl)
 {
 	m_context.resetVariables([&](VariableDeclaration const& _var) {