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-rw-r--r--libsolidity/formal/SMTChecker.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/libsolidity/formal/SMTChecker.cpp b/libsolidity/formal/SMTChecker.cpp
index e2a51267..c992fd61 100644
--- a/libsolidity/formal/SMTChecker.cpp
+++ b/libsolidity/formal/SMTChecker.cpp
@@ -752,6 +752,7 @@ void SMTChecker::mergeVariables(vector<VariableDeclaration const*> const& _varia
set<VariableDeclaration const*> uniqueVars(_variables.begin(), _variables.end());
for (auto const* decl: uniqueVars)
{
+ solAssert(_countersEndTrue.count(decl) && _countersEndFalse.count(decl), "");
int trueCounter = _countersEndTrue.at(decl).index();
int falseCounter = _countersEndFalse.at(decl).index();
solAssert(trueCounter != falseCounter, "");