diff --git a/include/DataAccessHandler.hpp b/include/DataAccessHandler.hpp
index b5c96f6..dbc3352 100644
--- a/include/DataAccessHandler.hpp
+++ b/include/DataAccessHandler.hpp
@@ -28,17 +28,17 @@ namespace spf_ie {
  * is difficult to work with for our purposes.
  */
 struct ArrayAccess {
-  ArrayAccess(int64_t id, Expr *base, std::vector<Expr *> &indexes, bool isRead)
-      : id(id), base(base), indexes(indexes), isRead(isRead) {}
+  ArrayAccess(std::string arrayName, int64_t sourceId, std::vector<Expr *> &indexes, bool isRead)
+      : arrayName(arrayName), sourceId(sourceId), indexes(indexes), isRead(isRead) {}
 
   //! Get a string representation of the array access, like A(i,j).
-  //! \param[in] potentialSubaccesses Other array accesses which may be used as indexes in this one
+  //! \param[in] potentialSubaccesses Other array accesses here, which may be used as indexes in this one
   std::string toString(const std::vector<ArrayAccess> &potentialSubaccesses) const;
 
-  //! ID of original AST array access expression
-  int64_t id;
-  //! Base array being accessed
-  Expr *base;
+  //! ID of original ArraySubscriptExpr node
+  int64_t sourceId;
+  //! Name of base (outermost) array being accessed
+  std::string arrayName;
   //! Indexes accessed in the array
   std::vector<Expr *> indexes;
   //! Whether this access is a read or not (a write)
diff --git a/src/DataAccessHandler.cpp b/src/DataAccessHandler.cpp
index f115dc6..92ba2d9 100644
--- a/src/DataAccessHandler.cpp
+++ b/src/DataAccessHandler.cpp
@@ -18,7 +18,7 @@ namespace spf_ie {
 
 std::string ArrayAccess::toString(const std::vector<ArrayAccess> &potentialSubaccesses) const {
   std::ostringstream os;
-  os << DATA_SPACE_DELIMITER << Utils::stmtToString(this->base) << DATA_SPACE_DELIMITER;
+  os << DATA_SPACE_DELIMITER << this->arrayName << DATA_SPACE_DELIMITER;
   os << "(";
   bool first = true;
   for (const auto &it: this->indexes) {
@@ -32,7 +32,7 @@ std::string ArrayAccess::toString(const std::vector<ArrayAccess> &potentialSubac
       // there is another array access used as an index for this one
       bool foundSubaccess = false;
       for (const auto &it: potentialSubaccesses) {
-        if (it.id == asArrayAccess->
+        if (it.sourceId == asArrayAccess->
             getID(*Context)
             ) {
           foundSubaccess = true;
@@ -78,7 +78,7 @@ void DataAccessHandler::addDataAccess(ArraySubscriptExpr *fullExpr,
   buildDataAccess(fullExpr, isRead, accesses);
 
   for (const auto &access: accesses) {
-    dataSpaces.emplace(Utils::stmtToString(access.base));
+    dataSpaces.emplace(access.arrayName);
     arrayAccesses.push_back(access);
   }
 }
@@ -95,7 +95,7 @@ void DataAccessHandler::buildDataAccess(
   }
 
   // construct ArrayAccess object
-  Expr *base = info.top();
+  Expr *baseAccess = info.top();
   info.pop();
   std::vector<Expr *> indexes;
   while (!info.empty()) {
@@ -109,7 +109,8 @@ void DataAccessHandler::buildDataAccess(
     info.pop();
   }
 
-  existingAccesses.emplace_back(ArrayAccess(fullExpr->getID(*Context), base, indexes, isRead));
+  existingAccesses
+      .emplace_back(ArrayAccess(Utils::stmtToString(baseAccess), fullExpr->getID(*Context), indexes, isRead));
 }
 
 int DataAccessHandler::getArrayExprInfo(ArraySubscriptExpr *fullExpr,
diff --git a/src/SPFComputationBuilder.cpp b/src/SPFComputationBuilder.cpp
index 6a1d466..9c461b8 100644
--- a/src/SPFComputationBuilder.cpp
+++ b/src/SPFComputationBuilder.cpp
@@ -57,8 +57,7 @@ SPFComputationBuilder::buildComputationFromFunction(FunctionDecl *funcDecl) {
       std::vector<std::pair<std::string, std::string>> dataReads;
       std::vector<std::pair<std::string, std::string>> dataWrites;
       for (auto &it_accesses: stmtContext.dataAccesses.arrayAccesses) {
-        std::string dataSpaceAccessed =
-            Utils::stmtToString(it_accesses.base);
+        std::string dataSpaceAccessed = it_accesses.arrayName;
         // enforce loop invariance
         if (!it_accesses.isRead) {
           for (const auto &invariantGroup: stmtContext.invariants) {
diff --git a/src/StmtContext.cpp b/src/StmtContext.cpp
index c835b30..e676a60 100644
--- a/src/StmtContext.cpp
+++ b/src/StmtContext.cpp
@@ -147,7 +147,7 @@ void StmtContext::enterFor(ForStmt *forStmt) {
     }
     for (const auto &access: accesses) {
       newInvariants.push_back(
-          Utils::stmtToString(access.base));
+          access.arrayName);
     }
     invariants.push_back(newInvariants);
   } else {