diff --git a/src/PrivateAnalyzer/private_arrays_search.cpp b/src/PrivateAnalyzer/private_arrays_search.cpp
index 857eb80..f7d75d0 100644
--- a/src/PrivateAnalyzer/private_arrays_search.cpp
+++ b/src/PrivateAnalyzer/private_arrays_search.cpp
@@ -72,8 +72,7 @@ static void Collapse(Region* region)
         for (auto& [arrayName, arrayRanges] : byBlock->array_use)
             useUnion[arrayName] = useUnion[arrayName].Union(byBlock->array_use[arrayName]);
 
-    for (auto& [arrayName, arrayRanges] : useUnion)
-        region->array_priv[arrayName] = useUnion[arrayName].Diff(region->array_use[arrayName]);
+    region->array_priv = region->array_use;
     
     for (Region* prevBlock : region->getHeader()->getPrevRegions()) 
         prevBlock->replaceInNextRegions(region, region->getHeader());
@@ -153,19 +152,6 @@ static void SolveDataFlow(Region* DFG)
     Collapse(DFG);
 }
 
-/*unsigned long long CalculateLength(const AccessingSet& array)
-{
-    if (array.GetElements().empty())
-        return 0;
-
-    unsigned long long result = 1;
-    for (const auto& range : array.GetElements()) 
-        for (const auto& dim : range)
-            result *= (dim.step * dim.tripCount);
-
-    return result;
-}*/
-
 static void AddPrivateArraysToLoop(LoopGraph* loop, const ArrayAccessingIndexes& privates, set<SgStatement*>& insertedPrivates)
 {
     SgStatement* spfStat = new SgStatement(SPF_ANALYSIS_DIR);