diff --git a/infer/src/absint/AbstractInterpreter.ml b/infer/src/absint/AbstractInterpreter.ml
index e46d46183..a2949b285 100644
--- a/infer/src/absint/AbstractInterpreter.ml
+++ b/infer/src/absint/AbstractInterpreter.ml
@@ -108,9 +108,16 @@ module AbstractInterpreterCommon (TransferFunctions : TransferFunctions.SIL) = s
     let underlying_node = Node.underlying_node node in
     NodePrinter.start_session ~pp_name underlying_node ;
     let left, right, result = match op with `Join lrr | `Widen (_, lrr) -> lrr in
+    let pp_right f =
+      if phys_equal right left then F.pp_print_string f "= LEFT" else Domain.pp f right
+    in
+    let pp_result f =
+      if phys_equal result left then F.pp_print_string f "= LEFT"
+      else if phys_equal result right then F.pp_print_string f "= RIGHT"
+      else Domain.pp f result
+    in
     L.d_strln
-      ( Format.asprintf "LEFT: %a@.RIGHT: %a@.RESULT: %a@." Domain.pp left Domain.pp right
-          Domain.pp result
+      ( Format.asprintf "LEFT: %a@.RIGHT: %t@.RESULT: %t@." Domain.pp left pp_right pp_result
       |> Escape.escape_xml ) ;
     NodePrinter.finish_session underlying_node
 
@@ -143,9 +150,13 @@ module AbstractInterpreterCommon (TransferFunctions : TransferFunctions.SIL) = s
       in
       if Config.write_html && debug <> DefaultNoExecInstr_UseFromLowerHilAbstractInterpreterOnly
       then (
+        let pp_post f =
+          if phys_equal astate_post pre then F.pp_print_string f "= PRE"
+          else Domain.pp f astate_post
+        in
         L.d_strln
-          ( Format.asprintf "@[PRE: %a@]@\n@[INSTRS: %a@]@[POST: %a@]@." Domain.pp pre
-              (Instrs.pp Pp.text) instrs Domain.pp astate_post
+          ( Format.asprintf "@[PRE: %a@]@\n@[INSTRS: %a@]@[POST: %t@]@." Domain.pp pre
+              (Instrs.pp Pp.text) instrs pp_post
           |> Escape.escape_xml ) ;
         NodePrinter.finish_session (Node.underlying_node node) ) ;
       InvariantMap.add node_id {State.pre; post= astate_post; visit_count} inv_map
diff --git a/infer/src/absint/LowerHil.ml b/infer/src/absint/LowerHil.ml
index b2c87820d..62065517c 100644
--- a/infer/src/absint/LowerHil.ml
+++ b/infer/src/absint/LowerHil.ml
@@ -33,9 +33,13 @@ struct
     if Config.write_html then (
       let underyling_node = CFG.Node.underlying_node node in
       NodePrinter.start_session ~pp_name:(pp_session_name node) underyling_node ;
+      let pp_post f =
+        if phys_equal post pre then Format.pp_print_string f "= PRE"
+        else TransferFunctions.Domain.pp f post
+      in
       L.d_strln
-        ( Format.asprintf "PRE: %a@.INSTR: %a@.POST: %a@." TransferFunctions.Domain.pp pre
-            HilInstr.pp hil_instr TransferFunctions.Domain.pp post
+        ( Format.asprintf "PRE: %a@.INSTR: %a@.POST: %t@." TransferFunctions.Domain.pp pre
+            HilInstr.pp hil_instr pp_post
         |> Escape.escape_xml ) ;
       NodePrinter.finish_session underyling_node )