diff --git a/diff_tests/perf-latest.txt b/diff_tests/perf-latest.txt
index 53586097..959102ff 100644
--- a/diff_tests/perf-latest.txt
+++ b/diff_tests/perf-latest.txt
@@ -1,19 +1,19 @@
-Start testing: Feb 16 06:34 UTC
+Start testing: Feb 21 03:27 UTC
 ----------------------------------------------------------
 1158/1365 Testing: diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc
 1158/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc
 Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/dc.bc" "ir.json"
 Directory: /home/runner/work/SVF/SVF/Release-build/bin
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" start time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" start time: Feb 21 03:27 UTC
 Output:
 ----------------------------------------------------------
 Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/dc.bc
 Executing command: ./wpa -vfspta -read-json ir.json
 <end of output>
-Test time =   0.92 sec
+Test time =   0.88 sec
 ----------------------------------------------------------
 Test Passed.
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" end time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" end time: Feb 21 03:27 UTC
 "diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" time elapsed: 00:00:00
 ----------------------------------------------------------
 
@@ -21,16 +21,16 @@ Test Passed.
 1159/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc
 Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bc.bc" "ir.json"
 Directory: /home/runner/work/SVF/SVF/Release-build/bin
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" start time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" start time: Feb 21 03:27 UTC
 Output:
 ----------------------------------------------------------
 Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bc.bc
 Executing command: ./wpa -vfspta -read-json ir.json
 <end of output>
-Test time =   1.76 sec
+Test time =   1.66 sec
 ----------------------------------------------------------
 Test Passed.
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" end time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" end time: Feb 21 03:27 UTC
 "diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" time elapsed: 00:00:01
 ----------------------------------------------------------
 
@@ -38,16 +38,16 @@ Test Passed.
 1160/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc
 Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libbz2.so.bc" "ir.json"
 Directory: /home/runner/work/SVF/SVF/Release-build/bin
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" start time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" start time: Feb 21 03:27 UTC
 Output:
 ----------------------------------------------------------
 Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libbz2.so.bc
 Executing command: ./wpa -vfspta -read-json ir.json
 <end of output>
-Test time =   2.38 sec
+Test time =   2.33 sec
 ----------------------------------------------------------
 Test Passed.
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" end time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" end time: Feb 21 03:27 UTC
 "diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" time elapsed: 00:00:02
 ----------------------------------------------------------
 
@@ -55,16 +55,16 @@ Test Passed.
 1161/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc
 Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bunzip2.bc" "ir.json"
 Directory: /home/runner/work/SVF/SVF/Release-build/bin
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" start time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" start time: Feb 21 03:27 UTC
 Output:
 ----------------------------------------------------------
 Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bunzip2.bc
 Executing command: ./wpa -vfspta -read-json ir.json
 <end of output>
-Test time =   2.92 sec
+Test time =   2.84 sec
 ----------------------------------------------------------
 Test Passed.
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" end time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" end time: Feb 21 03:27 UTC
 "diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" time elapsed: 00:00:02
 ----------------------------------------------------------
 
@@ -72,17 +72,17 @@ Test Passed.
 1162/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc
 Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/htop.bc" "ir.json"
 Directory: /home/runner/work/SVF/SVF/Release-build/bin
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" start time: Feb 16 06:34 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" start time: Feb 21 03:27 UTC
 Output:
 ----------------------------------------------------------
 vcall gep idx not constantint
 Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/htop.bc
 Executing command: ./wpa -vfspta -read-json ir.json
 <end of output>
-Test time =   9.83 sec
+Test time =   9.19 sec
 ----------------------------------------------------------
 Test Passed.
-"diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" end time: Feb 16 06:35 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" end time: Feb 21 03:27 UTC
 "diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" time elapsed: 00:00:09
 ----------------------------------------------------------
 
@@ -90,34 +90,34 @@ Test Passed.
 1163/1365 Test: diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc
 Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -ander -dump-json=ir.json" "wpa -ander -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libcurl.so.bc" "ir.json"
 Directory: /home/runner/work/SVF/SVF/Release-build/bin
-"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" start time: Feb 16 06:35 UTC
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" start time: Feb 21 03:27 UTC
 Output:
 ----------------------------------------------------------
 Executing command: ./wpa -ander -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libcurl.so.bc
 Executing command: ./wpa -ander -read-json ir.json
 <end of output>
-Test time =  32.64 sec
+Test time =  30.54 sec
 ----------------------------------------------------------
 Test Passed.
-"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" end time: Feb 16 06:35 UTC
-"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" time elapsed: 00:00:32
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" end time: Feb 21 03:28 UTC
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" time elapsed: 00:00:30
 ----------------------------------------------------------
 
 1164/1365 Testing: diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc
 1164/1365 Test: diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc
 Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -ander -dump-json=ir.json" "wpa -ander -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bash.bc" "ir.json"
 Directory: /home/runner/work/SVF/SVF/Release-build/bin
-"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" start time: Feb 16 06:35 UTC
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" start time: Feb 21 03:28 UTC
 Output:
 ----------------------------------------------------------
 Executing command: ./wpa -ander -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bash.bc
 Executing command: ./wpa -ander -read-json ir.json
 <end of output>
-Test time =  40.73 sec
+Test time =  37.98 sec
 ----------------------------------------------------------
 Test Passed.
-"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" end time: Feb 16 06:36 UTC
-"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" time elapsed: 00:00:40
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" end time: Feb 21 03:28 UTC
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" time elapsed: 00:00:37
 ----------------------------------------------------------
 
-End testing: Feb 16 06:36 UTC
+End testing: Feb 21 03:28 UTC
diff --git a/diff_tests/perf_history/perf-2024-02-21T03:28:42.txt b/diff_tests/perf_history/perf-2024-02-21T03:28:42.txt
new file mode 100644
index 00000000..959102ff
--- /dev/null
+++ b/diff_tests/perf_history/perf-2024-02-21T03:28:42.txt
@@ -0,0 +1,123 @@
+Start testing: Feb 21 03:27 UTC
+----------------------------------------------------------
+1158/1365 Testing: diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc
+1158/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc
+Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/dc.bc" "ir.json"
+Directory: /home/runner/work/SVF/SVF/Release-build/bin
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" start time: Feb 21 03:27 UTC
+Output:
+----------------------------------------------------------
+Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/dc.bc
+Executing command: ./wpa -vfspta -read-json ir.json
+<end of output>
+Test time =   0.88 sec
+----------------------------------------------------------
+Test Passed.
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" end time: Feb 21 03:27 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/dc.bc" time elapsed: 00:00:00
+----------------------------------------------------------
+
+1159/1365 Testing: diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc
+1159/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc
+Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bc.bc" "ir.json"
+Directory: /home/runner/work/SVF/SVF/Release-build/bin
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" start time: Feb 21 03:27 UTC
+Output:
+----------------------------------------------------------
+Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bc.bc
+Executing command: ./wpa -vfspta -read-json ir.json
+<end of output>
+Test time =   1.66 sec
+----------------------------------------------------------
+Test Passed.
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" end time: Feb 21 03:27 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bc.bc" time elapsed: 00:00:01
+----------------------------------------------------------
+
+1160/1365 Testing: diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc
+1160/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc
+Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libbz2.so.bc" "ir.json"
+Directory: /home/runner/work/SVF/SVF/Release-build/bin
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" start time: Feb 21 03:27 UTC
+Output:
+----------------------------------------------------------
+Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libbz2.so.bc
+Executing command: ./wpa -vfspta -read-json ir.json
+<end of output>
+Test time =   2.33 sec
+----------------------------------------------------------
+Test Passed.
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" end time: Feb 21 03:27 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/libbz2.so.bc" time elapsed: 00:00:02
+----------------------------------------------------------
+
+1161/1365 Testing: diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc
+1161/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc
+Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bunzip2.bc" "ir.json"
+Directory: /home/runner/work/SVF/SVF/Release-build/bin
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" start time: Feb 21 03:27 UTC
+Output:
+----------------------------------------------------------
+Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bunzip2.bc
+Executing command: ./wpa -vfspta -read-json ir.json
+<end of output>
+Test time =   2.84 sec
+----------------------------------------------------------
+Test Passed.
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" end time: Feb 21 03:27 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/bunzip2.bc" time elapsed: 00:00:02
+----------------------------------------------------------
+
+1162/1365 Testing: diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc
+1162/1365 Test: diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc
+Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -vfspta -dump-vfg -dump-json=ir.json" "wpa -vfspta -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/htop.bc" "ir.json"
+Directory: /home/runner/work/SVF/SVF/Release-build/bin
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" start time: Feb 21 03:27 UTC
+Output:
+----------------------------------------------------------
+vcall gep idx not constantint
+Executing command: ./wpa -vfspta -dump-vfg -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/htop.bc
+Executing command: ./wpa -vfspta -read-json ir.json
+<end of output>
+Test time =   9.19 sec
+----------------------------------------------------------
+Test Passed.
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" end time: Feb 21 03:27 UTC
+"diff-perf-cruxbc-small/test_cases_bc/crux-bc/htop.bc" time elapsed: 00:00:09
+----------------------------------------------------------
+
+1163/1365 Testing: diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc
+1163/1365 Test: diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc
+Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -ander -dump-json=ir.json" "wpa -ander -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libcurl.so.bc" "ir.json"
+Directory: /home/runner/work/SVF/SVF/Release-build/bin
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" start time: Feb 21 03:27 UTC
+Output:
+----------------------------------------------------------
+Executing command: ./wpa -ander -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/libcurl.so.bc
+Executing command: ./wpa -ander -read-json ir.json
+<end of output>
+Test time =  30.54 sec
+----------------------------------------------------------
+Test Passed.
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" end time: Feb 21 03:28 UTC
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/libcurl.so.bc" time elapsed: 00:00:30
+----------------------------------------------------------
+
+1164/1365 Testing: diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc
+1164/1365 Test: diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc
+Command: "/home/runner/work/SVF/SVF/Test-Suite/diff_tests/difftest.py" "wpa -ander -dump-json=ir.json" "wpa -ander -read-json" "/home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bash.bc" "ir.json"
+Directory: /home/runner/work/SVF/SVF/Release-build/bin
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" start time: Feb 21 03:28 UTC
+Output:
+----------------------------------------------------------
+Executing command: ./wpa -ander -dump-json=ir.json /home/runner/work/SVF/SVF/Test-Suite/test_cases_bc/crux-bc/bash.bc
+Executing command: ./wpa -ander -read-json ir.json
+<end of output>
+Test time =  37.98 sec
+----------------------------------------------------------
+Test Passed.
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" end time: Feb 21 03:28 UTC
+"diff-perf-cruxbc-big/test_cases_bc/crux-bc/bash.bc" time elapsed: 00:00:37
+----------------------------------------------------------
+
+End testing: Feb 21 03:28 UTC