diff --git a/infer/src/IR/AccessPath.ml b/infer/src/IR/AccessPath.ml
index 5d65faaf2..4ad8b78d8 100644
--- a/infer/src/IR/AccessPath.ml
+++ b/infer/src/IR/AccessPath.ml
@@ -251,7 +251,7 @@ module Abs = struct
 
   let is_exact = function Exact _ -> true | Abstracted _ -> false
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     match (lhs, rhs) with
     | Abstracted _, Exact _ ->
         false
diff --git a/infer/src/IR/AccessPath.mli b/infer/src/IR/AccessPath.mli
index 1ce7eb29e..833ffd515 100644
--- a/infer/src/IR/AccessPath.mli
+++ b/infer/src/IR/AccessPath.mli
@@ -111,7 +111,7 @@ module Abs : sig
   val is_exact : t -> bool
   (** return true if [t] is an exact representation of an access path, false if it's an abstraction *)
 
-  val ( <= ) : lhs:t -> rhs:t -> bool
+  val leq : lhs:t -> rhs:t -> bool
   (** return true if \gamma(lhs) \subseteq \gamma(rhs) *)
 
   val pp : Format.formatter -> t -> unit
diff --git a/infer/src/absint/AbstractDomain.ml b/infer/src/absint/AbstractDomain.ml
index 9bc3cb33c..27b9654b4 100644
--- a/infer/src/absint/AbstractDomain.ml
+++ b/infer/src/absint/AbstractDomain.ml
@@ -23,7 +23,7 @@ exception Stop_analysis
 module type NoJoin = sig
   include PrettyPrintable.PrintableType
 
-  val ( <= ) : lhs:t -> rhs:t -> bool
+  val leq : lhs:t -> rhs:t -> bool
 end
 
 module type S = sig
@@ -37,7 +37,7 @@ end
 module Empty : S with type t = unit = struct
   type t = unit
 
-  let ( <= ) ~lhs:() ~rhs:() = true
+  let leq ~lhs:() ~rhs:() = true
 
   let join () () = ()
 
@@ -63,7 +63,7 @@ module type WithTop = sig
 end
 
 module BottomLiftedUtils = struct
-  let ( <= ) ~le ~lhs ~rhs =
+  let leq ~leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       match (lhs, rhs) with
@@ -72,7 +72,7 @@ module BottomLiftedUtils = struct
       | _, Bottom ->
           false
       | NonBottom lhs, NonBottom rhs ->
-          le ~lhs ~rhs
+          leq ~lhs ~rhs
 
 
   let map ~f astate =
@@ -96,7 +96,7 @@ module BottomLifted (Domain : S) = struct
 
   let is_bottom = function Bottom -> true | NonBottom _ -> false
 
-  let ( <= ) = BottomLiftedUtils.( <= ) ~le:Domain.( <= )
+  let leq = BottomLiftedUtils.leq ~leq:Domain.leq
 
   let join astate1 astate2 =
     if phys_equal astate1 astate2 then astate1
@@ -128,7 +128,7 @@ module BottomLifted (Domain : S) = struct
 end
 
 module TopLiftedUtils = struct
-  let ( <= ) ~le ~lhs ~rhs =
+  let leq ~leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       match (lhs, rhs) with
@@ -137,7 +137,7 @@ module TopLiftedUtils = struct
       | Top, _ ->
           false
       | NonTop lhs, NonTop rhs ->
-          le ~lhs ~rhs
+          leq ~lhs ~rhs
 
 
   let pp_top f = F.pp_print_string f SpecialChars.down_tack
@@ -152,7 +152,7 @@ module TopLifted (Domain : S) = struct
 
   let is_top = function Top -> true | _ -> false
 
-  let ( <= ) = TopLiftedUtils.( <= ) ~le:Domain.( <= )
+  let leq = TopLiftedUtils.leq ~leq:Domain.leq
 
   let join astate1 astate2 =
     if phys_equal astate1 astate2 then astate1
@@ -180,10 +180,9 @@ end
 module Pair (Domain1 : S) (Domain2 : S) = struct
   type t = Domain1.t * Domain2.t
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
-    else
-      Domain1.( <= ) ~lhs:(fst lhs) ~rhs:(fst rhs) && Domain2.( <= ) ~lhs:(snd lhs) ~rhs:(snd rhs)
+    else Domain1.leq ~lhs:(fst lhs) ~rhs:(fst rhs) && Domain2.leq ~lhs:(snd lhs) ~rhs:(snd rhs)
 
 
   let join astate1 astate2 =
@@ -218,7 +217,7 @@ module Flat (V : PrettyPrintable.PrintableEquatableType) = struct
 
   let is_top = function Top -> true | _ -> false
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     phys_equal lhs rhs
     ||
     match (lhs, rhs) with
@@ -271,18 +270,18 @@ module StackedUtils = struct
           cmp_above a1 a2
 
 
-  let ( <= ) ~le_below ~le_above ~lhs ~rhs =
+  let leq ~leq_below ~leq_above ~lhs ~rhs =
     phys_equal lhs rhs
     ||
     match (lhs, rhs) with
     | Below lhs, Below rhs ->
-        le_below ~lhs ~rhs
+        leq_below ~lhs ~rhs
     | Below _, Above _ ->
         true
     | Above _, Below _ ->
         false
     | Above lhs, Above rhs ->
-        le_above ~lhs ~rhs
+        leq_above ~lhs ~rhs
 
 
   let combine ~dir x1 x2 ~f_below ~f_above =
@@ -305,7 +304,7 @@ end
 module Stacked (Below : S) (Above : S) = struct
   type t = (Below.t, Above.t) below_above
 
-  let ( <= ) = StackedUtils.( <= ) ~le_below:Below.( <= ) ~le_above:Above.( <= )
+  let leq = StackedUtils.leq ~leq_below:Below.leq ~leq_above:Above.leq
 
   let join = StackedUtils.combine ~dir:`Increasing ~f_below:Below.join ~f_above:Above.join
 
@@ -327,7 +326,7 @@ module MinReprSet (Element : PrettyPrintable.PrintableOrderedType) = struct
 
   let is_bottom = Option.is_none
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     match (lhs, rhs) with
     | None, _ ->
         true
@@ -382,7 +381,7 @@ module FiniteSetOfPPSet (S : PrettyPrintable.PPSet) = struct
 
   let is_bottom = is_empty
 
-  let ( <= ) ~lhs ~rhs = if phys_equal lhs rhs then true else subset lhs rhs
+  let leq ~lhs ~rhs = if phys_equal lhs rhs then true else subset lhs rhs
 
   let join astate1 astate2 = if phys_equal astate1 astate2 then astate1 else union astate1 astate2
 
@@ -405,7 +404,7 @@ module InvertedSet (Element : PrettyPrintable.PrintableOrderedType) = struct
 
   let is_top = is_empty
 
-  let ( <= ) ~lhs ~rhs = if phys_equal lhs rhs then true else subset rhs lhs
+  let leq ~lhs ~rhs = if phys_equal lhs rhs then true else subset rhs lhs
 
   let join astate1 astate2 = if phys_equal astate1 astate2 then astate1 else inter astate1 astate2
 
@@ -430,12 +429,12 @@ module MapOfPPMap (M : PrettyPrintable.PPMap) (ValueDomain : S) = struct
   let is_bottom = is_empty
 
   (** true if all keys in [lhs] are in [rhs], and each lhs value <= corresponding rhs value *)
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       M.for_all
         (fun k lhs_v ->
-          try ValueDomain.( <= ) ~lhs:lhs_v ~rhs:(M.find k rhs) with Caml.Not_found -> false )
+          try ValueDomain.leq ~lhs:lhs_v ~rhs:(M.find k rhs) with Caml.Not_found -> false )
         lhs
 
 
@@ -493,10 +492,10 @@ module InvertedMap (Key : PrettyPrintable.PrintableOrderedType) (ValueDomain : S
 
   let is_top = is_empty
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
-      try for_all (fun k rhs_v -> ValueDomain.( <= ) ~lhs:(find k lhs) ~rhs:rhs_v) rhs
+      try for_all (fun k rhs_v -> ValueDomain.leq ~lhs:(find k lhs) ~rhs:rhs_v) rhs
       with Caml.Not_found -> false
 
 
@@ -637,7 +636,7 @@ struct
 
   let pp = M.pp
 
-  let ( <= ) = M.( <= )
+  let leq = M.leq
 
   let inter ~f astate1 astate2 =
     if phys_equal astate1 astate2 then astate1
@@ -692,7 +691,7 @@ struct
 
   let is_bottom = M.is_empty
 
-  let ( <= ) = M.( <= )
+  let leq = M.leq
 
   let join = M.join
 
@@ -720,7 +719,7 @@ end
 module BooleanAnd = struct
   type t = bool
 
-  let ( <= ) ~lhs ~rhs = lhs || not rhs
+  let leq ~lhs ~rhs = lhs || not rhs
 
   let join = ( && )
 
@@ -736,7 +735,7 @@ module BooleanOr = struct
 
   let is_bottom astate = not astate
 
-  let ( <= ) ~lhs ~rhs = (not lhs) || rhs
+  let leq ~lhs ~rhs = (not lhs) || rhs
 
   let join = ( || )
 
@@ -763,7 +762,7 @@ module CountDomain (MaxCount : MaxCount) = struct
 
   let is_bottom = Int.equal bottom
 
-  let ( <= ) ~lhs ~rhs = lhs <= rhs
+  let leq ~lhs ~rhs = lhs <= rhs
 
   let join astate1 astate2 = Int.min top (Int.max astate1 astate2)
 
@@ -792,7 +791,7 @@ module DownwardIntDomain (MaxCount : MaxCount) = struct
 
   let is_bottom = Int.equal bottom
 
-  let ( <= ) ~lhs ~rhs = lhs >= rhs
+  let leq ~lhs ~rhs = lhs >= rhs
 
   let join astate1 astate2 = Int.min astate1 astate2
 
diff --git a/infer/src/absint/AbstractDomain.mli b/infer/src/absint/AbstractDomain.mli
index 2de4a5696..da4003043 100644
--- a/infer/src/absint/AbstractDomain.mli
+++ b/infer/src/absint/AbstractDomain.mli
@@ -26,7 +26,7 @@ exception Stop_analysis
 module type NoJoin = sig
   include PrettyPrintable.PrintableType
 
-  val ( <= ) : lhs:t -> rhs:t -> bool
+  val leq : lhs:t -> rhs:t -> bool
   (** the implication relation: [lhs <= rhs] means [lhs |- rhs] *)
 end
 
@@ -104,9 +104,9 @@ include
 end
 
 module StackedUtils : sig
-  val ( <= ) :
-       le_below:(lhs:'b -> rhs:'b -> bool)
-    -> le_above:(lhs:'a -> rhs:'a -> bool)
+  val leq :
+       leq_below:(lhs:'b -> rhs:'b -> bool)
+    -> leq_above:(lhs:'a -> rhs:'a -> bool)
     -> lhs:('b, 'a) below_above
     -> rhs:('b, 'a) below_above
     -> bool
diff --git a/infer/src/absint/AbstractInterpreter.ml b/infer/src/absint/AbstractInterpreter.ml
index b0a7c211e..dd4a11966 100644
--- a/infer/src/absint/AbstractInterpreter.ml
+++ b/infer/src/absint/AbstractInterpreter.ml
@@ -212,10 +212,10 @@ module AbstractInterpreterCommon (TransferFunctions : TransferFunctions.SIL) = s
         if
           if is_narrowing then
             (old_state.State.visit_count :> int) > Config.max_narrows
-            || Domain.( <= ) ~lhs:old_state.State.pre ~rhs:new_pre
-          else Domain.( <= ) ~lhs:new_pre ~rhs:old_state.State.pre
+            || Domain.leq ~lhs:old_state.State.pre ~rhs:new_pre
+          else Domain.leq ~lhs:new_pre ~rhs:old_state.State.pre
         then (inv_map, ReachedFixPoint)
-        else if is_narrowing && not (Domain.( <= ) ~lhs:new_pre ~rhs:old_state.State.pre) then (
+        else if is_narrowing && not (Domain.leq ~lhs:new_pre ~rhs:old_state.State.pre) then (
           L.(debug Analysis Verbose)
             "Terminate narrowing because old and new states are not comparable at %a:%a@."
             Typ.Procname.pp (Summary.get_proc_name summary) Node.pp_id node_id ;
diff --git a/infer/src/absint/TransferFunctions.ml b/infer/src/absint/TransferFunctions.ml
index 20b39f427..f0f0e5bac 100644
--- a/infer/src/absint/TransferFunctions.ml
+++ b/infer/src/absint/TransferFunctions.ml
@@ -93,7 +93,7 @@ module MakeDisjunctive (TransferFunctions : DisjReady) (DConfig : DisjunctiveCon
     let rev_filter_not_over_approximated disjuncts ~not_in =
       List.rev_filter disjuncts ~f:(fun disjunct ->
           List.exists not_in ~f:(fun disj_not_in ->
-              TransferFunctions.Domain.( <= ) ~lhs:disjunct.astate ~rhs:disj_not_in.astate )
+              TransferFunctions.Domain.leq ~lhs:disjunct.astate ~rhs:disj_not_in.astate )
           |> not )
 
 
@@ -137,7 +137,7 @@ module MakeDisjunctive (TransferFunctions : DisjReady) (DConfig : DisjunctiveCon
           false
 
 
-    let ( <= ) ~lhs ~rhs = phys_equal lhs rhs || is_trivial_subset lhs ~of_:rhs
+    let leq ~lhs ~rhs = phys_equal lhs rhs || is_trivial_subset lhs ~of_:rhs
 
     let widen ~prev ~next ~num_iters =
       let (`UnderApproximateAfterNumIterations max_iter) = DConfig.widen_policy in
@@ -145,7 +145,7 @@ module MakeDisjunctive (TransferFunctions : DisjReady) (DConfig : DisjunctiveCon
       else
         let visited_prev = set_visited true prev in
         let post = join_up_to_imply visited_prev next in
-        if ( <= ) ~lhs:post ~rhs:prev then set_visited false prev else post
+        if leq ~lhs:post ~rhs:prev then set_visited false prev else post
 
 
     let pp = Disjuncts.pp
diff --git a/infer/src/bufferoverrun/arrayBlk.ml b/infer/src/bufferoverrun/arrayBlk.ml
index 6ec345279..d0f3d3ea7 100644
--- a/infer/src/bufferoverrun/arrayBlk.ml
+++ b/infer/src/bufferoverrun/arrayBlk.ml
@@ -66,7 +66,7 @@ module ArrInfo = struct
           Top
 
 
-  let ( <= ) : lhs:t -> rhs:t -> bool =
+  let leq : lhs:t -> rhs:t -> bool =
    fun ~lhs ~rhs ->
     if phys_equal lhs rhs then true
     else
diff --git a/infer/src/bufferoverrun/bounds.ml b/infer/src/bufferoverrun/bounds.ml
index 0f208c6fb..23d600c3f 100644
--- a/infer/src/bufferoverrun/bounds.ml
+++ b/infer/src/bufferoverrun/bounds.ml
@@ -1167,7 +1167,7 @@ end
 module NonNegativeBound = struct
   type t = Bound.t * BoundTrace.t [@@deriving compare]
 
-  let ( <= ) ~lhs:(bound_lhs, _) ~rhs:(bound_rhs, _) = Bound.le bound_lhs bound_rhs
+  let leq ~lhs:(bound_lhs, _) ~rhs:(bound_rhs, _) = Bound.le bound_lhs bound_rhs
 
   let join (bound_x, trace_x) (bound_y, trace_y) =
     (Bound.overapprox_max bound_x bound_y, BoundTrace.join trace_x trace_y)
diff --git a/infer/src/bufferoverrun/bounds.mli b/infer/src/bufferoverrun/bounds.mli
index d614e971a..6c586b8e9 100644
--- a/infer/src/bufferoverrun/bounds.mli
+++ b/infer/src/bufferoverrun/bounds.mli
@@ -132,7 +132,7 @@ type ('c, 's, 't) valclass = Constant of 'c | Symbolic of 's | ValTop of 't
 module NonNegativeBound : sig
   type t [@@deriving compare]
 
-  val ( <= ) : lhs:t -> rhs:t -> bool
+  val leq : lhs:t -> rhs:t -> bool
 
   val join : t -> t -> t
 
diff --git a/infer/src/bufferoverrun/bufferOverrunDomain.ml b/infer/src/bufferoverrun/bufferOverrunDomain.ml
index 7d0eac088..36a704aac 100644
--- a/infer/src/bufferoverrun/bufferOverrunDomain.ml
+++ b/infer/src/bufferoverrun/bufferOverrunDomain.ml
@@ -33,7 +33,7 @@ end)
 module ItvUpdatedBy = struct
   type t = Addition | Multiplication | Top
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     match (lhs, rhs) with
     | Addition, _ ->
         true
@@ -47,7 +47,7 @@ module ItvUpdatedBy = struct
         true
 
 
-  let join x y = if ( <= ) ~lhs:x ~rhs:y then y else x
+  let join x y = if leq ~lhs:x ~rhs:y then y else x
 
   let widen ~prev ~next ~num_iters:_ = join prev next
 
@@ -149,18 +149,18 @@ module Val = struct
     ; traces }
 
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
-      Itv.( <= ) ~lhs:lhs.itv ~rhs:rhs.itv
-      && ItvThresholds.( <= ) ~lhs:lhs.itv_thresholds ~rhs:rhs.itv_thresholds
-      && ItvUpdatedBy.( <= ) ~lhs:lhs.itv_updated_by ~rhs:rhs.itv_updated_by
-      && ModeledRange.( <= ) ~lhs:lhs.modeled_range ~rhs:rhs.modeled_range
-      && Relation.Sym.( <= ) ~lhs:lhs.sym ~rhs:rhs.sym
-      && PowLoc.( <= ) ~lhs:lhs.powloc ~rhs:rhs.powloc
-      && ArrayBlk.( <= ) ~lhs:lhs.arrayblk ~rhs:rhs.arrayblk
-      && Relation.Sym.( <= ) ~lhs:lhs.offset_sym ~rhs:rhs.offset_sym
-      && Relation.Sym.( <= ) ~lhs:lhs.size_sym ~rhs:rhs.size_sym
+      Itv.leq ~lhs:lhs.itv ~rhs:rhs.itv
+      && ItvThresholds.leq ~lhs:lhs.itv_thresholds ~rhs:rhs.itv_thresholds
+      && ItvUpdatedBy.leq ~lhs:lhs.itv_updated_by ~rhs:rhs.itv_updated_by
+      && ModeledRange.leq ~lhs:lhs.modeled_range ~rhs:rhs.modeled_range
+      && Relation.Sym.leq ~lhs:lhs.sym ~rhs:rhs.sym
+      && PowLoc.leq ~lhs:lhs.powloc ~rhs:rhs.powloc
+      && ArrayBlk.leq ~lhs:lhs.arrayblk ~rhs:rhs.arrayblk
+      && Relation.Sym.leq ~lhs:lhs.offset_sym ~rhs:rhs.offset_sym
+      && Relation.Sym.leq ~lhs:lhs.size_sym ~rhs:rhs.size_sym
 
 
   let widen ~prev ~next ~num_iters =
@@ -951,7 +951,7 @@ module AliasTarget = struct
         Some Top
 
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     equal lhs rhs
     ||
     match (lhs, rhs) with
@@ -1180,9 +1180,9 @@ end
 module Alias = struct
   type t = {map: AliasMap.t; ret: AliasRet.t}
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
-    else AliasMap.( <= ) ~lhs:lhs.map ~rhs:rhs.map && AliasRet.( <= ) ~lhs:lhs.ret ~rhs:rhs.ret
+    else AliasMap.leq ~lhs:lhs.map ~rhs:rhs.map && AliasRet.leq ~lhs:lhs.ret ~rhs:rhs.ret
 
 
   let join x y =
@@ -1335,14 +1335,14 @@ end
 module PruningExp = struct
   type t = Unknown | Binop of {bop: Binop.t; lhs: CoreVal.t; rhs: CoreVal.t} [@@deriving compare]
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     match (lhs, rhs) with
     | _, Unknown ->
         true
     | Unknown, _ ->
         false
     | Binop {bop= bop1; lhs= lhs1; rhs= rhs1}, Binop {bop= bop2; lhs= lhs2; rhs= rhs2} ->
-        Binop.equal bop1 bop2 && Val.( <= ) ~lhs:lhs1 ~rhs:lhs2 && Val.( <= ) ~lhs:rhs1 ~rhs:rhs2
+        Binop.equal bop1 bop2 && Val.leq ~lhs:lhs1 ~rhs:lhs2 && Val.leq ~lhs:rhs1 ~rhs:rhs2
 
 
   let join x y =
@@ -1386,7 +1386,7 @@ module PruningExp = struct
 
 
   let is_empty =
-    let le_false v = Itv.( <= ) ~lhs:(Val.get_itv v) ~rhs:Itv.zero in
+    let le_false v = Itv.leq ~lhs:(Val.get_itv v) ~rhs:Itv.zero in
     function
     | Unknown ->
         false
@@ -1420,8 +1420,8 @@ end
 module PrunedVal = struct
   type t = {v: CoreVal.t; pruning_exp: PruningExp.t} [@@deriving compare]
 
-  let ( <= ) ~lhs ~rhs =
-    Val.( <= ) ~lhs:lhs.v ~rhs:rhs.v && PruningExp.( <= ) ~lhs:lhs.pruning_exp ~rhs:rhs.pruning_exp
+  let leq ~lhs ~rhs =
+    Val.leq ~lhs:lhs.v ~rhs:rhs.v && PruningExp.leq ~lhs:lhs.pruning_exp ~rhs:rhs.pruning_exp
 
 
   let join x y = {v= Val.join x.v y.v; pruning_exp= PruningExp.join x.pruning_exp y.pruning_exp}
@@ -1523,7 +1523,7 @@ module LatestPrune = struct
         F.fprintf fmt "LatestPrune: ret(%a) %a / %a" Ident.pp v PrunePairs.pp p1 PrunePairs.pp p2
 
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       match (lhs, rhs) with
@@ -1532,29 +1532,29 @@ module LatestPrune = struct
       | Top, _ ->
           false
       | Latest p1, Latest p2 ->
-          PrunePairs.( <= ) ~lhs:p1 ~rhs:p2
+          PrunePairs.leq ~lhs:p1 ~rhs:p2
       | TrueBranch (x1, p1), TrueBranch (x2, p2)
       | FalseBranch (x1, p1), FalseBranch (x2, p2)
       | TrueBranch (x1, p1), V (x2, p2, _)
       | FalseBranch (x1, p1), V (x2, _, p2) ->
-          Pvar.equal x1 x2 && PrunePairs.( <= ) ~lhs:p1 ~rhs:p2
+          Pvar.equal x1 x2 && PrunePairs.leq ~lhs:p1 ~rhs:p2
       | V (x1, ptrue1, pfalse1), V (x2, ptrue2, pfalse2) ->
           Pvar.equal x1 x2
-          && PrunePairs.( <= ) ~lhs:ptrue1 ~rhs:ptrue2
-          && PrunePairs.( <= ) ~lhs:pfalse1 ~rhs:pfalse2
+          && PrunePairs.leq ~lhs:ptrue1 ~rhs:ptrue2
+          && PrunePairs.leq ~lhs:pfalse1 ~rhs:pfalse2
       | VRet (x1, ptrue1, pfalse1), VRet (x2, ptrue2, pfalse2) ->
           Ident.equal x1 x2
-          && PrunePairs.( <= ) ~lhs:ptrue1 ~rhs:ptrue2
-          && PrunePairs.( <= ) ~lhs:pfalse1 ~rhs:pfalse2
+          && PrunePairs.leq ~lhs:ptrue1 ~rhs:ptrue2
+          && PrunePairs.leq ~lhs:pfalse1 ~rhs:pfalse2
       | _, _ ->
           false
 
 
   let join x y =
     match (x, y) with
-    | _, _ when ( <= ) ~lhs:x ~rhs:y ->
+    | _, _ when leq ~lhs:x ~rhs:y ->
         y
-    | _, _ when ( <= ) ~lhs:y ~rhs:x ->
+    | _, _ when leq ~lhs:y ~rhs:x ->
         x
     | Latest p1, Latest p2 ->
         Latest (PrunePairs.join p1 p2)
@@ -1713,14 +1713,14 @@ module MemReach = struct
     ; oenv= GOption.GSome oenv }
 
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
-      StackLocs.( <= ) ~lhs:lhs.stack_locs ~rhs:rhs.stack_locs
-      && MemPure.( <= ) ~lhs:lhs.mem_pure ~rhs:rhs.mem_pure
-      && Alias.( <= ) ~lhs:lhs.alias ~rhs:rhs.alias
-      && LatestPrune.( <= ) ~lhs:lhs.latest_prune ~rhs:rhs.latest_prune
-      && Relation.( <= ) ~lhs:lhs.relation ~rhs:rhs.relation
+      StackLocs.leq ~lhs:lhs.stack_locs ~rhs:rhs.stack_locs
+      && MemPure.leq ~lhs:lhs.mem_pure ~rhs:rhs.mem_pure
+      && Alias.leq ~lhs:lhs.alias ~rhs:rhs.alias
+      && LatestPrune.leq ~lhs:lhs.latest_prune ~rhs:rhs.latest_prune
+      && Relation.leq ~lhs:lhs.relation ~rhs:rhs.relation
 
 
   let widen ~prev ~next ~num_iters =
@@ -2113,7 +2113,7 @@ module Mem = struct
 
   let is_exc_raised = function ExcRaised -> true | _ -> false
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       match (lhs, rhs) with
@@ -2126,7 +2126,7 @@ module Mem = struct
       | _, ExcRaised ->
           false
       | NonBottom lhs, NonBottom rhs ->
-          MemReach.( <= ) ~lhs ~rhs
+          MemReach.leq ~lhs ~rhs
 
 
   let join x y =
diff --git a/infer/src/bufferoverrun/bufferOverrunDomainRelation.ml b/infer/src/bufferoverrun/bufferOverrunDomainRelation.ml
index a59a0463c..6ead94fb0 100644
--- a/infer/src/bufferoverrun/bufferOverrunDomainRelation.ml
+++ b/infer/src/bufferoverrun/bufferOverrunDomainRelation.ml
@@ -126,7 +126,7 @@ module NoRelation = struct
 
     let f3_false _ _ _ = false
 
-    let ( <= ) ~lhs:() ~rhs:() = true
+    let leq ~lhs:() ~rhs:() = true
 
     let join = f2
 
@@ -980,7 +980,7 @@ module Make (Manager : Manager_S) = struct
 
     let pp fmt x = Abstract1.print fmt x
 
-    let ( <= ) ~lhs ~rhs = sync_env_lift (Abstract1.is_leq man) lhs rhs
+    let leq ~lhs ~rhs = sync_env_lift (Abstract1.is_leq man) lhs rhs
 
     let sat_tcons tcons x =
       let tcons = Constraints.remove_strict_ineq_tcons1 tcons in
@@ -1213,7 +1213,7 @@ module Make (Manager : Manager_S) = struct
       let ge_than_lhs pack_id rhs =
         match PackMap.find pack_id lhs with
         | lhs ->
-            Val.( <= ) ~lhs ~rhs
+            Val.leq ~lhs ~rhs
         | exception Caml.Not_found ->
             Val.is_top rhs
       in
@@ -1247,7 +1247,7 @@ module Make (Manager : Manager_S) = struct
       PackMap.merge widen_opt prev next
 
 
-    let ( <= ) ~lhs ~rhs =
+    let leq ~lhs ~rhs =
       let _, packs_lhs, packs_rhs = sync_pack lhs rhs in
       le_synced_packs ~lhs:packs_lhs ~rhs:packs_rhs
 
diff --git a/infer/src/bufferoverrun/bufferOverrunSemantics.ml b/infer/src/bufferoverrun/bufferOverrunSemantics.ml
index 57d880d98..7a1a99cd7 100644
--- a/infer/src/bufferoverrun/bufferOverrunSemantics.ml
+++ b/infer/src/bufferoverrun/bufferOverrunSemantics.ml
@@ -729,7 +729,7 @@ module Prune = struct
   let is_unreachable_constant : Typ.IntegerWidths.t -> Exp.t -> Mem.t -> bool =
    fun integer_type_widths e m ->
     let v = eval integer_type_widths e m in
-    Itv.( <= ) ~lhs:(Val.get_itv v) ~rhs:(Itv.of_int 0)
+    Itv.leq ~lhs:(Val.get_itv v) ~rhs:(Itv.of_int 0)
     && PowLoc.is_bot (Val.get_pow_loc v)
     && ArrayBlk.is_bot (Val.get_array_blk v)
 
diff --git a/infer/src/bufferoverrun/bufferOverrunUtils.ml b/infer/src/bufferoverrun/bufferOverrunUtils.ml
index ae66e1109..63495a510 100644
--- a/infer/src/bufferoverrun/bufferOverrunUtils.ml
+++ b/infer/src/bufferoverrun/bufferOverrunUtils.ml
@@ -226,7 +226,7 @@ module Exec = struct
     let set_c_strlen1 allocsite arrinfo acc =
       let loc = Loc.of_allocsite allocsite in
       let idx = Dom.Val.of_itv ~traces (ArrayBlk.ArrInfo.offsetof arrinfo) in
-      if Itv.( <= ) ~lhs:Itv.zero ~rhs:src_itv then Dom.Mem.set_first_idx_of_null loc idx acc
+      if Itv.leq ~lhs:Itv.zero ~rhs:src_itv then Dom.Mem.set_first_idx_of_null loc idx acc
       else Dom.Mem.unset_first_idx_of_null loc idx acc
     in
     ArrayBlk.fold set_c_strlen1 (Dom.Val.get_array_blk tgt) mem
diff --git a/infer/src/bufferoverrun/ints.ml b/infer/src/bufferoverrun/ints.ml
index efae6a0f8..d5a965a92 100644
--- a/infer/src/bufferoverrun/ints.ml
+++ b/infer/src/bufferoverrun/ints.ml
@@ -73,7 +73,7 @@ module NonNegativeInt = struct
 
   let to_int_exn = Z.to_int
 
-  let ( <= ) ~lhs ~rhs = lhs <= rhs
+  let leq ~lhs ~rhs = lhs <= rhs
 
   let succ = Z.succ
 
diff --git a/infer/src/bufferoverrun/ints.mli b/infer/src/bufferoverrun/ints.mli
index ed348de04..14d9a0c3f 100644
--- a/infer/src/bufferoverrun/ints.mli
+++ b/infer/src/bufferoverrun/ints.mli
@@ -63,7 +63,7 @@ module NonNegativeInt : sig
 
   val is_one : t -> bool
 
-  val ( <= ) : lhs:t -> rhs:t -> bool
+  val leq : lhs:t -> rhs:t -> bool
 
   val succ : t -> t
 
diff --git a/infer/src/bufferoverrun/itv.ml b/infer/src/bufferoverrun/itv.ml
index 6980abaa6..a6e024c5e 100644
--- a/infer/src/bufferoverrun/itv.ml
+++ b/infer/src/bufferoverrun/itv.ml
@@ -53,7 +53,7 @@ module ItvPure = struct
 
   let exists_str ~f (l, u) = Bound.exists_str ~f l || Bound.exists_str ~f u
 
-  let ( <= ) : lhs:t -> rhs:t -> bool =
+  let leq : lhs:t -> rhs:t -> bool =
    fun ~lhs:(l1, u1) ~rhs:(l2, u2) -> Bound.le l2 l1 && Bound.le u1 u2
 
 
@@ -545,9 +545,9 @@ let of_int_lit : IntLit.t -> t = fun n -> of_big_int (IntLit.to_big_int n)
 
 let is_false : t -> bool = function NonBottom x -> ItvPure.is_false x | Bottom -> false
 
-let le : lhs:t -> rhs:t -> bool = ( <= )
+let le : lhs:t -> rhs:t -> bool = leq
 
-let eq : t -> t -> bool = fun x y -> ( <= ) ~lhs:x ~rhs:y && ( <= ) ~lhs:y ~rhs:x
+let eq : t -> t -> bool = fun x y -> leq ~lhs:x ~rhs:y && leq ~lhs:y ~rhs:x
 
 let range loop_head : t -> ItvRange.t = function
   | Bottom ->
diff --git a/infer/src/bufferoverrun/itv.mli b/infer/src/bufferoverrun/itv.mli
index 3165d4604..f6c9c8986 100644
--- a/infer/src/bufferoverrun/itv.mli
+++ b/infer/src/bufferoverrun/itv.mli
@@ -57,7 +57,7 @@ module ItvPure : sig
 
   val is_le_mone : t -> bool
 
-  val ( <= ) : lhs:t -> rhs:t -> bool
+  val leq : lhs:t -> rhs:t -> bool
 
   val have_similar_bounds : t -> t -> bool
 
diff --git a/infer/src/bufferoverrun/polynomials.ml b/infer/src/bufferoverrun/polynomials.ml
index 062c3aa66..cca90a6a9 100644
--- a/infer/src/bufferoverrun/polynomials.ml
+++ b/infer/src/bufferoverrun/polynomials.ml
@@ -292,13 +292,12 @@ module MakePolynomial (S : NonNegativeSymbolWithDegreeKind) = struct
 
 
   (* assumes symbols are not comparable *)
-  let rec ( <= ) : lhs:t -> rhs:t -> bool =
+  let rec leq : lhs:t -> rhs:t -> bool =
    fun ~lhs ~rhs ->
     phys_equal lhs rhs
-    || NonNegativeInt.( <= ) ~lhs:lhs.const ~rhs:rhs.const
-       && M.le ~le_elt:( <= ) lhs.terms rhs.terms
+    || (NonNegativeInt.leq ~lhs:lhs.const ~rhs:rhs.const && M.le ~le_elt:leq lhs.terms rhs.terms)
     || Option.exists (int_ub lhs) ~f:(fun lhs_ub ->
-           NonNegativeInt.( <= ) ~lhs:lhs_ub ~rhs:(int_lb rhs) )
+           NonNegativeInt.leq ~lhs:lhs_ub ~rhs:(int_lb rhs) )
 
 
   let rec xcompare ~lhs ~rhs =
@@ -317,7 +316,7 @@ module MakePolynomial (S : NonNegativeSymbolWithDegreeKind) = struct
             let p' = mask_min_max_constant p in
             M.update (S.mask_min_max_constant s)
               (function
-                | None -> Some p' | Some p -> if ( <= ) ~lhs:p ~rhs:p' then Some p' else Some p )
+                | None -> Some p' | Some p -> if leq ~lhs:p ~rhs:p' then Some p' else Some p )
               acc )
           terms M.empty }
 
@@ -499,9 +498,9 @@ module NonNegativePolynomial = struct
   type degree_with_term =
     (Degree.t * NonNegativeNonTopPolynomial.t, TopTraces.t) AbstractDomain.Types.below_above
 
-  let ( <= ) =
-    AbstractDomain.StackedUtils.( <= ) ~le_below:NonNegativeNonTopPolynomial.( <= )
-      ~le_above:TopTraces.( <= )
+  let leq =
+    AbstractDomain.StackedUtils.leq ~leq_below:NonNegativeNonTopPolynomial.leq
+      ~leq_above:TopTraces.leq
 
 
   let pp ~hum =
diff --git a/infer/src/bufferoverrun/polynomials.mli b/infer/src/bufferoverrun/polynomials.mli
index d0cfa9c09..3f96fa6e8 100644
--- a/infer/src/bufferoverrun/polynomials.mli
+++ b/infer/src/bufferoverrun/polynomials.mli
@@ -41,7 +41,7 @@ module NonNegativePolynomial : sig
 
   val pp_hum : Format.formatter -> t -> unit
 
-  val ( <= ) : lhs:t -> rhs:t -> bool
+  val leq : lhs:t -> rhs:t -> bool
 
   val top : t
 
diff --git a/infer/src/checkers/Bindings.ml b/infer/src/checkers/Bindings.ml
index 0e0c0982f..045a2bb51 100644
--- a/infer/src/checkers/Bindings.ml
+++ b/infer/src/checkers/Bindings.ml
@@ -100,7 +100,7 @@ let pp f {resolve; reverse} =
     Reverse.pp reverse
 
 
-let ( <= ) ~lhs ~rhs = IdAccessPathMapDomain.( <= ) ~lhs:lhs.resolve ~rhs:rhs.resolve
+let leq ~lhs ~rhs = IdAccessPathMapDomain.leq ~lhs:lhs.resolve ~rhs:rhs.resolve
 
 let join bindings1 bindings2 =
   if phys_equal bindings1 bindings2 then bindings1
diff --git a/infer/src/checkers/IdAccessPathMapDomain.ml b/infer/src/checkers/IdAccessPathMapDomain.ml
index f410c5056..dc468ba6a 100644
--- a/infer/src/checkers/IdAccessPathMapDomain.ml
+++ b/infer/src/checkers/IdAccessPathMapDomain.ml
@@ -32,7 +32,7 @@ let check_invariant ap1 ap2 = function
           HilExp.AccessExpression.pp ap2
 
 
-let ( <= ) ~lhs ~rhs =
+let leq ~lhs ~rhs =
   if phys_equal lhs rhs then true
   else
     IdMap.for_all
diff --git a/infer/src/checkers/Trace.ml b/infer/src/checkers/Trace.ml
index 879484d0a..2808d7d69 100644
--- a/infer/src/checkers/Trace.ml
+++ b/infer/src/checkers/Trace.ml
@@ -162,12 +162,12 @@ module Make (Spec : Spec) = struct
 
     type t = {known: Known.t; footprint: Footprint.t; sanitizers: Sanitizers.t}
 
-    let ( <= ) ~lhs ~rhs =
+    let leq ~lhs ~rhs =
       if phys_equal lhs rhs then true
       else
-        Known.( <= ) ~lhs:lhs.known ~rhs:rhs.known
-        && Footprint.( <= ) ~lhs:lhs.footprint ~rhs:rhs.footprint
-        && Sanitizers.( <= ) ~lhs:lhs.sanitizers ~rhs:rhs.sanitizers
+        Known.leq ~lhs:lhs.known ~rhs:rhs.known
+        && Footprint.leq ~lhs:lhs.footprint ~rhs:rhs.footprint
+        && Sanitizers.leq ~lhs:lhs.sanitizers ~rhs:rhs.sanitizers
 
 
     let join astate1 astate2 =
@@ -546,9 +546,9 @@ module Make (Spec : Spec) = struct
     {sources; sinks; passthroughs}
 
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     phys_equal lhs rhs
-    || Sources.( <= ) ~lhs:lhs.sources ~rhs:rhs.sources
+    || Sources.leq ~lhs:lhs.sources ~rhs:rhs.sources
        && Sinks.subset lhs.sinks rhs.sinks
        && Passthroughs.subset lhs.passthroughs rhs.passthroughs
 
diff --git a/infer/src/checkers/accessPathDomains.ml b/infer/src/checkers/accessPathDomains.ml
index 6a947d6c8..dc1d658a2 100644
--- a/infer/src/checkers/accessPathDomains.ml
+++ b/infer/src/checkers/accessPathDomains.ml
@@ -24,9 +24,8 @@ module Set = struct
     APSet.filter
       (fun lhs ->
         not
-          (APSet.exists
-             (fun rhs -> (not (phys_equal lhs rhs)) && AccessPath.Abs.( <= ) ~lhs ~rhs)
-             aps) )
+          (APSet.exists (fun rhs -> (not (phys_equal lhs rhs)) && AccessPath.Abs.leq ~lhs ~rhs) aps)
+        )
       aps
 
 
@@ -35,18 +34,17 @@ module Set = struct
   let of_list = APSet.of_list
 
   let mem ap aps =
-    APSet.mem ap aps
-    || APSet.exists (fun other_ap -> AccessPath.Abs.( <= ) ~lhs:ap ~rhs:other_ap) aps
+    APSet.mem ap aps || APSet.exists (fun other_ap -> AccessPath.Abs.leq ~lhs:ap ~rhs:other_ap) aps
 
 
   let mem_fuzzy ap aps =
     let has_overlap ap1 ap2 =
-      AccessPath.Abs.( <= ) ~lhs:ap1 ~rhs:ap2 || AccessPath.Abs.( <= ) ~lhs:ap2 ~rhs:ap1
+      AccessPath.Abs.leq ~lhs:ap1 ~rhs:ap2 || AccessPath.Abs.leq ~lhs:ap2 ~rhs:ap1
     in
     APSet.mem ap aps || APSet.exists (has_overlap ap) aps
 
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       let rhs_contains lhs_ap = mem lhs_ap rhs in
diff --git a/infer/src/checkers/accessTree.ml b/infer/src/checkers/accessTree.ml
index 7788cdb7e..cd433b468 100644
--- a/infer/src/checkers/accessTree.ml
+++ b/infer/src/checkers/accessTree.ml
@@ -176,7 +176,7 @@ module Make (TraceDomain : AbstractDomain.WithBottom) (Config : Config) = struct
   let rec access_tree_lteq ((lhs_trace, lhs_tree) as lhs) ((rhs_trace, rhs_tree) as rhs) =
     if phys_equal lhs rhs then true
     else
-      TraceDomain.( <= ) ~lhs:lhs_trace ~rhs:rhs_trace
+      TraceDomain.leq ~lhs:lhs_trace ~rhs:rhs_trace
       &&
       match (lhs_tree, rhs_tree) with
       | Subtree lhs_subtree, Subtree rhs_subtree ->
@@ -193,7 +193,7 @@ module Make (TraceDomain : AbstractDomain.WithBottom) (Config : Config) = struct
           false
 
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       BaseMap.for_all
diff --git a/infer/src/checkers/cost.ml b/infer/src/checkers/cost.ml
index 9e2a6683a..1ebbb128f 100644
--- a/infer/src/checkers/cost.ml
+++ b/infer/src/checkers/cost.ml
@@ -315,7 +315,7 @@ module ControlFlowCost = struct
       let f sum =
         let cost_of_sum = Sum.cost ~of_item sum in
         let new_cost = BasicCost.min_default_left t.cost cost_of_sum in
-        if not (BasicCost.( <= ) ~lhs:t.cost ~rhs:new_cost) then (
+        if not (BasicCost.leq ~lhs:t.cost ~rhs:new_cost) then (
           on_improve sum cost_of_sum new_cost ;
           t.cost <- new_cost )
       in
@@ -325,7 +325,7 @@ module ControlFlowCost = struct
     let improve_cost_with t cost' =
       let old_cost = t.cost in
       let new_cost = BasicCost.min_default_left old_cost cost' in
-      if not (BasicCost.( <= ) ~lhs:old_cost ~rhs:new_cost) then (
+      if not (BasicCost.leq ~lhs:old_cost ~rhs:new_cost) then (
         t.cost <- new_cost ;
         Some old_cost )
       else None
@@ -652,7 +652,7 @@ module WorstCaseCost = struct
      subsequent 'don't know's.  Instead, we report Top cost only at
      the top level per function.  *)
   let should_report_cost cost ~threshold =
-    (not (BasicCost.is_top cost)) && not (BasicCost.( <= ) ~lhs:cost ~rhs:threshold)
+    (not (BasicCost.is_top cost)) && not (BasicCost.leq ~lhs:cost ~rhs:threshold)
 
 
   let exec_node tenv {costs; reports} extras instr_node =
diff --git a/infer/src/checkers/uninitDomain.ml b/infer/src/checkers/uninitDomain.ml
index 2d6ae9f0f..52df4a24e 100644
--- a/infer/src/checkers/uninitDomain.ml
+++ b/infer/src/checkers/uninitDomain.ml
@@ -100,7 +100,7 @@ module Record
 struct
   type t = {maybe_uninit_vars: Domain1.t; aliased_vars: Domain2.t; prepost: Domain3.t prepost}
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     if phys_equal lhs rhs then true
     else
       let {maybe_uninit_vars= lhs_uv; aliased_vars= lhs_av; prepost= {pre= lhs_pre; post= lhs_post}}
@@ -111,10 +111,10 @@ struct
           =
         rhs
       in
-      Domain1.( <= ) ~lhs:lhs_uv ~rhs:rhs_uv
-      && Domain2.( <= ) ~lhs:lhs_av ~rhs:rhs_av
-      && Domain3.( <= ) ~lhs:lhs_pre ~rhs:rhs_pre
-      && Domain3.( <= ) ~lhs:lhs_post ~rhs:rhs_post
+      Domain1.leq ~lhs:lhs_uv ~rhs:rhs_uv
+      && Domain2.leq ~lhs:lhs_av ~rhs:rhs_av
+      && Domain3.leq ~lhs:lhs_pre ~rhs:rhs_pre
+      && Domain3.leq ~lhs:lhs_post ~rhs:rhs_post
 
 
   let join astate1 astate2 =
diff --git a/infer/src/concurrency/RacerDDomain.ml b/infer/src/concurrency/RacerDDomain.ml
index f9d6f4bcf..54be60197 100644
--- a/infer/src/concurrency/RacerDDomain.ml
+++ b/infer/src/concurrency/RacerDDomain.ml
@@ -187,7 +187,7 @@ module ThreadsDomain = struct
   let bottom = NoThread
 
   (* NoThread < AnyThreadButSelf < Any *)
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     phys_equal lhs rhs
     ||
     match (lhs, rhs) with
@@ -319,7 +319,7 @@ module OwnershipAbstractValue = struct
 
   let make_owned_if formal_index = OwnedIf (IntSet.singleton formal_index)
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     phys_equal lhs rhs
     ||
     match (lhs, rhs) with
@@ -518,13 +518,13 @@ let is_bottom {threads; locks; accesses; ownership; attribute_map} =
   && AttributeMapDomain.is_empty attribute_map
 
 
-let ( <= ) ~lhs ~rhs =
+let leq ~lhs ~rhs =
   if phys_equal lhs rhs then true
   else
-    ThreadsDomain.( <= ) ~lhs:lhs.threads ~rhs:rhs.threads
-    && LocksDomain.( <= ) ~lhs:lhs.locks ~rhs:rhs.locks
-    && AccessDomain.( <= ) ~lhs:lhs.accesses ~rhs:rhs.accesses
-    && AttributeMapDomain.( <= ) ~lhs:lhs.attribute_map ~rhs:rhs.attribute_map
+    ThreadsDomain.leq ~lhs:lhs.threads ~rhs:rhs.threads
+    && LocksDomain.leq ~lhs:lhs.locks ~rhs:rhs.locks
+    && AccessDomain.leq ~lhs:lhs.accesses ~rhs:rhs.accesses
+    && AttributeMapDomain.leq ~lhs:lhs.attribute_map ~rhs:rhs.attribute_map
 
 
 let join astate1 astate2 =
diff --git a/infer/src/concurrency/starvationDomain.ml b/infer/src/concurrency/starvationDomain.ml
index 056bef0c5..b5870b320 100644
--- a/infer/src/concurrency/starvationDomain.ml
+++ b/infer/src/concurrency/starvationDomain.ml
@@ -22,7 +22,7 @@ module ThreadDomain = struct
     match (st1, st2) with AnyThread, _ | _, AnyThread -> AnyThread | _, _ -> UIThread
 
 
-  let ( <= ) ~lhs ~rhs = match (lhs, rhs) with AnyThread, UIThread -> false | _, _ -> true
+  let leq ~lhs ~rhs = match (lhs, rhs) with AnyThread, UIThread -> false | _, _ -> true
 
   let widen ~prev ~next ~num_iters:_ = join prev next
 
@@ -191,7 +191,7 @@ end = struct
     {map; acquisitions}
 
 
-  let ( <= ) ~lhs ~rhs = Map.( <= ) ~lhs:lhs.map ~rhs:rhs.map
+  let leq ~lhs ~rhs = Map.leq ~lhs:lhs.map ~rhs:rhs.map
 
   let top = {map= Map.top; acquisitions= Acquisitions.empty}
 
@@ -444,11 +444,11 @@ let join lhs rhs =
 
 let widen ~prev ~next ~num_iters:_ = join prev next
 
-let ( <= ) ~lhs ~rhs =
-  GuardToLockMap.( <= ) ~lhs:lhs.guard_map ~rhs:rhs.guard_map
-  && LockState.( <= ) ~lhs:lhs.lock_state ~rhs:rhs.lock_state
-  && CriticalPairs.( <= ) ~lhs:lhs.critical_pairs ~rhs:rhs.critical_pairs
-  && ThreadDomain.( <= ) ~lhs:lhs.thread ~rhs:rhs.thread
+let leq ~lhs ~rhs =
+  GuardToLockMap.leq ~lhs:lhs.guard_map ~rhs:rhs.guard_map
+  && LockState.leq ~lhs:lhs.lock_state ~rhs:rhs.lock_state
+  && CriticalPairs.leq ~lhs:lhs.critical_pairs ~rhs:rhs.critical_pairs
+  && ThreadDomain.leq ~lhs:lhs.thread ~rhs:rhs.thread
 
 
 let add_critical_pair tenv_opt lock_state event thread ~loc acc =
diff --git a/infer/src/labs/00_dummy_checker/ResourceLeakDomain.ml b/infer/src/labs/00_dummy_checker/ResourceLeakDomain.ml
index d9108510f..43cad302b 100644
--- a/infer/src/labs/00_dummy_checker/ResourceLeakDomain.ml
+++ b/infer/src/labs/00_dummy_checker/ResourceLeakDomain.ml
@@ -10,7 +10,7 @@ module F = Format
 
 type t = unit
 
-let ( <= ) ~lhs:_ ~rhs:_ = assert false
+let leq ~lhs:_ ~rhs:_ = assert false
 
 let join _a _b = assert false
 
diff --git a/infer/src/labs/01_integer_domain/ResourceLeakDomain.ml b/infer/src/labs/01_integer_domain/ResourceLeakDomain.ml
index 675257c37..400b7f300 100644
--- a/infer/src/labs/01_integer_domain/ResourceLeakDomain.ml
+++ b/infer/src/labs/01_integer_domain/ResourceLeakDomain.ml
@@ -10,7 +10,7 @@ module F = Format
 
 type t = int
 
-let ( <= ) ~lhs ~rhs = lhs <= rhs
+let leq ~lhs ~rhs = lhs <= rhs
 
 let join _a _b = assert false
 
diff --git a/infer/src/labs/02_domain_join/ResourceLeakDomain.ml b/infer/src/labs/02_domain_join/ResourceLeakDomain.ml
index 98c0c3f10..3828e29da 100644
--- a/infer/src/labs/02_domain_join/ResourceLeakDomain.ml
+++ b/infer/src/labs/02_domain_join/ResourceLeakDomain.ml
@@ -10,7 +10,7 @@ module F = Format
 
 type t = int
 
-let ( <= ) ~lhs ~rhs = lhs <= rhs
+let leq ~lhs ~rhs = lhs <= rhs
 
 let join a b = max a b
 
diff --git a/infer/src/labs/03_domain_top/ResourceLeakDomain.ml b/infer/src/labs/03_domain_top/ResourceLeakDomain.ml
index c86c01c48..c259dc4d3 100644
--- a/infer/src/labs/03_domain_top/ResourceLeakDomain.ml
+++ b/infer/src/labs/03_domain_top/ResourceLeakDomain.ml
@@ -11,7 +11,7 @@ module F = Format
 module FiniteBounds = struct
   type t = int
 
-  let ( <= ) ~lhs ~rhs = lhs <= rhs
+  let leq ~lhs ~rhs = lhs <= rhs
 
   let join a b = max a b
 
diff --git a/infer/src/labs/04_interprocedural/ResourceLeakDomain.ml b/infer/src/labs/04_interprocedural/ResourceLeakDomain.ml
index 47047aa4b..4ebf10fe3 100644
--- a/infer/src/labs/04_interprocedural/ResourceLeakDomain.ml
+++ b/infer/src/labs/04_interprocedural/ResourceLeakDomain.ml
@@ -11,7 +11,7 @@ module F = Format
 module FiniteBounds = struct
   type t = int
 
-  let ( <= ) ~lhs ~rhs = lhs <= rhs
+  let leq ~lhs ~rhs = lhs <= rhs
 
   let join a b = max a b
 
diff --git a/infer/src/labs/05_access_paths_interprocedural/ResourceLeakDomain.ml b/infer/src/labs/05_access_paths_interprocedural/ResourceLeakDomain.ml
index 5bd5bc011..f133d3cff 100644
--- a/infer/src/labs/05_access_paths_interprocedural/ResourceLeakDomain.ml
+++ b/infer/src/labs/05_access_paths_interprocedural/ResourceLeakDomain.ml
@@ -11,7 +11,7 @@ module F = Format
 module FiniteBounds = struct
   type t = int
 
-  let ( <= ) ~lhs ~rhs = lhs <= rhs
+  let leq ~lhs ~rhs = lhs <= rhs
 
   let join a b = max a b
 
diff --git a/infer/src/labs/ResourceLeakDomain.ml b/infer/src/labs/ResourceLeakDomain.ml
index d9108510f..43cad302b 100644
--- a/infer/src/labs/ResourceLeakDomain.ml
+++ b/infer/src/labs/ResourceLeakDomain.ml
@@ -10,7 +10,7 @@ module F = Format
 
 type t = unit
 
-let ( <= ) ~lhs:_ ~rhs:_ = assert false
+let leq ~lhs:_ ~rhs:_ = assert false
 
 let join _a _b = assert false
 
diff --git a/infer/src/nullsafe/NullabilitySuggest.ml b/infer/src/nullsafe/NullabilitySuggest.ml
index c76c9fa9e..c1e7a3a3d 100644
--- a/infer/src/nullsafe/NullabilitySuggest.ml
+++ b/infer/src/nullsafe/NullabilitySuggest.ml
@@ -16,11 +16,11 @@ module UseDefChain = struct
     | NullDefAssign of (Location.t * AccessPath.t)
   [@@deriving compare]
 
-  let ( <= ) ~lhs ~rhs = compare lhs rhs <= 0
+  let leq ~lhs ~rhs = compare lhs rhs <= 0
 
   (* Keep only one chain in join/widen as we are going to report only one
    * trace to the user eventually. *)
-  let join lhs rhs = if ( <= ) ~lhs ~rhs then rhs else lhs
+  let join lhs rhs = if leq ~lhs ~rhs then rhs else lhs
 
   let widen ~prev ~next ~num_iters:_ = join prev next
 
diff --git a/infer/src/pulse/PulseAbductiveDomain.ml b/infer/src/pulse/PulseAbductiveDomain.ml
index 182e875f0..6bd3a1a70 100644
--- a/infer/src/pulse/PulseAbductiveDomain.ml
+++ b/infer/src/pulse/PulseAbductiveDomain.ml
@@ -61,7 +61,7 @@ module InvertedDomain : BaseDomain = struct
   let pp = BaseDomain.pp
 
   (** inverted lattice *)
-  let ( <= ) ~lhs ~rhs = BaseDomain.( <= ) ~rhs:lhs ~lhs:rhs
+  let leq ~lhs ~rhs = BaseDomain.leq ~rhs:lhs ~lhs:rhs
 end
 
 (** biabduction-style pre/post state *)
@@ -71,7 +71,7 @@ type t =
 
 let pp f {post; pre} = F.fprintf f "@[<v>%a@;PRE=[%a]@]" Domain.pp post InvertedDomain.pp pre
 
-let ( <= ) ~lhs ~rhs =
+let leq ~lhs ~rhs =
   match
     BaseDomain.isograph_map BaseDomain.empty_mapping
       ~lhs:(rhs.pre :> BaseDomain.t)
diff --git a/infer/src/pulse/PulseBaseDomain.ml b/infer/src/pulse/PulseBaseDomain.ml
index 92ae35dd2..57dbfafaf 100644
--- a/infer/src/pulse/PulseBaseDomain.ml
+++ b/infer/src/pulse/PulseBaseDomain.ml
@@ -168,7 +168,7 @@ module GraphComparison = struct
     match isograph_map ~lhs ~rhs mapping with IsomorphicUpTo _ -> true | NotIsomorphic -> false
 end
 
-let ( <= ) ~lhs ~rhs =
+let leq ~lhs ~rhs =
   phys_equal lhs rhs || GraphComparison.is_isograph ~lhs ~rhs GraphComparison.empty_mapping
 
 
diff --git a/infer/src/unit/TraceTests.ml b/infer/src/unit/TraceTests.ml
index 335d961ce..46ed4a14a 100644
--- a/infer/src/unit/TraceTests.ml
+++ b/infer/src/unit/TraceTests.ml
@@ -82,7 +82,7 @@ module MockTrace = Trace.Make (struct
     else None
 end)
 
-let trace_equal t1 t2 = MockTrace.( <= ) ~lhs:t1 ~rhs:t2 && MockTrace.( <= ) ~lhs:t2 ~rhs:t1
+let trace_equal t1 t2 = MockTrace.leq ~lhs:t1 ~rhs:t2 && MockTrace.leq ~lhs:t2 ~rhs:t1
 
 let source_equal s source = MockSource.equal s source
 
diff --git a/infer/src/unit/abstractInterpreterTests.ml b/infer/src/unit/abstractInterpreterTests.ml
index 5dd58881a..adcb7cd1f 100644
--- a/infer/src/unit/abstractInterpreterTests.ml
+++ b/infer/src/unit/abstractInterpreterTests.ml
@@ -22,7 +22,7 @@ module PathCountDomain = struct
 
   let initial = make_path_count 1
 
-  let ( <= ) ~lhs ~rhs =
+  let leq ~lhs ~rhs =
     match (lhs, rhs) with
     | PathCount c1, PathCount c2 ->
         c1 <= c2
diff --git a/infer/src/unit/accessPathTests.ml b/infer/src/unit/accessPathTests.ml
index 994bdab45..96f379638 100644
--- a/infer/src/unit/accessPathTests.ml
+++ b/infer/src/unit/accessPathTests.ml
@@ -117,10 +117,10 @@ let tests =
       assert_bool "extract" (AccessPath.equal (AccessPath.Abs.extract xF_exact) xF) ;
       assert_bool "is_exact" (AccessPath.Abs.is_exact x_exact) ;
       assert_bool "not is_exact" (not (AccessPath.Abs.is_exact x_abstract)) ;
-      assert_bool "(<=)1" (AccessPath.Abs.( <= ) ~lhs:x_exact ~rhs:x_abstract) ;
-      assert_bool "(<=)2" (AccessPath.Abs.( <= ) ~lhs:xF_exact ~rhs:x_abstract) ;
-      assert_bool "not (<=)1" (not (AccessPath.Abs.( <= ) ~lhs:x_abstract ~rhs:x_exact)) ;
-      assert_bool "not (<=)2" (not (AccessPath.Abs.( <= ) ~lhs:x_abstract ~rhs:xF_exact))
+      assert_bool "(<=)1" (AccessPath.Abs.leq ~lhs:x_exact ~rhs:x_abstract) ;
+      assert_bool "(<=)2" (AccessPath.Abs.leq ~lhs:xF_exact ~rhs:x_abstract) ;
+      assert_bool "not (<=)1" (not (AccessPath.Abs.leq ~lhs:x_abstract ~rhs:x_exact)) ;
+      assert_bool "not (<=)2" (not (AccessPath.Abs.leq ~lhs:x_abstract ~rhs:xF_exact))
     in
     "abstraction" >:: abstraction_test_
   in
@@ -151,11 +151,11 @@ let tests =
       (* [mem_fuzzy] should behave the same as [mem] except in this case *)
       assert_bool "mem_fuzzy_not_fully_contained"
         (AccessPathDomains.Set.mem_fuzzy yF_abstract aps3) ;
-      assert_bool "<= on same is true" (AccessPathDomains.Set.( <= ) ~lhs:aps1 ~rhs:aps1) ;
-      assert_bool "aps1 <= aps2" (AccessPathDomains.Set.( <= ) ~lhs:aps1 ~rhs:aps2) ;
-      assert_bool "aps2 <= aps1" (AccessPathDomains.Set.( <= ) ~lhs:aps2 ~rhs:aps1) ;
-      assert_bool "aps1 <= aps3" (AccessPathDomains.Set.( <= ) ~lhs:aps1 ~rhs:aps3) ;
-      assert_bool "not aps3 <= aps1" (not (AccessPathDomains.Set.( <= ) ~lhs:aps3 ~rhs:aps1)) ;
+      assert_bool "<= on same is true" (AccessPathDomains.Set.leq ~lhs:aps1 ~rhs:aps1) ;
+      assert_bool "aps1 <= aps2" (AccessPathDomains.Set.leq ~lhs:aps1 ~rhs:aps2) ;
+      assert_bool "aps2 <= aps1" (AccessPathDomains.Set.leq ~lhs:aps2 ~rhs:aps1) ;
+      assert_bool "aps1 <= aps3" (AccessPathDomains.Set.leq ~lhs:aps1 ~rhs:aps3) ;
+      assert_bool "not aps3 <= aps1" (not (AccessPathDomains.Set.leq ~lhs:aps3 ~rhs:aps1)) ;
       assert_eq (AccessPathDomains.Set.join aps1 aps1) "{ x*, x }" ;
       assert_eq (AccessPathDomains.Set.join aps1 aps2) "{ x*, x, x.f }" ;
       assert_eq (AccessPathDomains.Set.join aps1 aps3) "{ x*, x, x.f, y.f }" ;
diff --git a/infer/src/unit/accessTreeTests.ml b/infer/src/unit/accessTreeTests.ml
index 7fd621aec..baccf3c60 100644
--- a/infer/src/unit/accessTreeTests.ml
+++ b/infer/src/unit/accessTreeTests.ml
@@ -295,25 +295,25 @@ let tests =
   let lteq_test =
     let lteq_test_ _ =
       (* regular tree tests *)
-      assert_bool "<= equal;" (Domain.( <= ) ~lhs:tree ~rhs:tree) ;
-      assert_bool "<= bases" (Domain.( <= ) ~lhs:x_base_tree ~rhs:x_y_base_tree) ;
-      assert_bool "<= regular1" (Domain.( <= ) ~lhs:x_base_tree ~rhs:xFG_tree) ;
-      assert_bool "<= regular2" (Domain.( <= ) ~lhs:xFG_tree ~rhs:tree) ;
-      assert_bool "<= regular3" (Domain.( <= ) ~lhs:y_base_tree ~rhs:tree) ;
-      assert_bool "<= bases negative1" (not (Domain.( <= ) ~lhs:x_y_base_tree ~rhs:x_base_tree)) ;
-      assert_bool "<= bases negative2" (not (Domain.( <= ) ~lhs:x_base_tree ~rhs:y_base_tree)) ;
-      assert_bool "<= negative1" (not (Domain.( <= ) ~lhs:xFG_tree ~rhs:y_base_tree)) ;
-      assert_bool "<= negative2" (not (Domain.( <= ) ~lhs:tree ~rhs:xFG_tree)) ;
+      assert_bool "<= equal;" (Domain.leq ~lhs:tree ~rhs:tree) ;
+      assert_bool "<= bases" (Domain.leq ~lhs:x_base_tree ~rhs:x_y_base_tree) ;
+      assert_bool "<= regular1" (Domain.leq ~lhs:x_base_tree ~rhs:xFG_tree) ;
+      assert_bool "<= regular2" (Domain.leq ~lhs:xFG_tree ~rhs:tree) ;
+      assert_bool "<= regular3" (Domain.leq ~lhs:y_base_tree ~rhs:tree) ;
+      assert_bool "<= bases negative1" (not (Domain.leq ~lhs:x_y_base_tree ~rhs:x_base_tree)) ;
+      assert_bool "<= bases negative2" (not (Domain.leq ~lhs:x_base_tree ~rhs:y_base_tree)) ;
+      assert_bool "<= negative1" (not (Domain.leq ~lhs:xFG_tree ~rhs:y_base_tree)) ;
+      assert_bool "<= negative2" (not (Domain.leq ~lhs:tree ~rhs:xFG_tree)) ;
       (* star tree tests *)
-      assert_bool "<= star lhs equal" (Domain.( <= ) ~lhs:x_star_tree ~rhs:x_star_tree) ;
-      assert_bool "<= star rhs1" (Domain.( <= ) ~lhs:x_base_tree ~rhs:x_star_tree) ;
-      assert_bool "<= star rhs2" (Domain.( <= ) ~lhs:xFG_tree ~rhs:x_star_tree) ;
-      assert_bool "<= star rhs3" (Domain.( <= ) ~lhs:y_base_tree ~rhs:yF_star_tree) ;
-      assert_bool "<= star rhs4" (Domain.( <= ) ~lhs:yF_star_tree ~rhs:tree) ;
-      assert_bool "<= star lhs negative1" (not (Domain.( <= ) ~lhs:x_star_tree ~rhs:x_base_tree)) ;
-      assert_bool "<= star lhs negative2" (not (Domain.( <= ) ~lhs:x_star_tree ~rhs:xFG_tree)) ;
-      assert_bool "<= star lhs negative3" (not (Domain.( <= ) ~lhs:yF_star_tree ~rhs:y_base_tree)) ;
-      assert_bool "<= star lhs negative4" (not (Domain.( <= ) ~lhs:tree ~rhs:yF_star_tree)) ;
+      assert_bool "<= star lhs equal" (Domain.leq ~lhs:x_star_tree ~rhs:x_star_tree) ;
+      assert_bool "<= star rhs1" (Domain.leq ~lhs:x_base_tree ~rhs:x_star_tree) ;
+      assert_bool "<= star rhs2" (Domain.leq ~lhs:xFG_tree ~rhs:x_star_tree) ;
+      assert_bool "<= star rhs3" (Domain.leq ~lhs:y_base_tree ~rhs:yF_star_tree) ;
+      assert_bool "<= star rhs4" (Domain.leq ~lhs:yF_star_tree ~rhs:tree) ;
+      assert_bool "<= star lhs negative1" (not (Domain.leq ~lhs:x_star_tree ~rhs:x_base_tree)) ;
+      assert_bool "<= star lhs negative2" (not (Domain.leq ~lhs:x_star_tree ~rhs:xFG_tree)) ;
+      assert_bool "<= star lhs negative3" (not (Domain.leq ~lhs:yF_star_tree ~rhs:y_base_tree)) ;
+      assert_bool "<= star lhs negative4" (not (Domain.leq ~lhs:tree ~rhs:yF_star_tree)) ;
       (* <= tree but not <= trace tests *)
       (* same as x_base_tree, but with a trace higher in the traces lattice *)
       let x_base_tree_higher_trace =
@@ -323,14 +323,13 @@ let tests =
       let x_star_tree_diff_trace =
         Domain.BaseMap.singleton x_base (Domain.make_starred_leaf y_trace)
       in
-      assert_bool "(x, {}) <= (x, {y})"
-        (Domain.( <= ) ~lhs:x_base_tree ~rhs:x_base_tree_higher_trace) ;
+      assert_bool "(x, {}) <= (x, {y})" (Domain.leq ~lhs:x_base_tree ~rhs:x_base_tree_higher_trace) ;
       assert_bool "(x, {y}) not <= (x, {})"
-        (not (Domain.( <= ) ~lhs:x_base_tree_higher_trace ~rhs:x_base_tree)) ;
+        (not (Domain.leq ~lhs:x_base_tree_higher_trace ~rhs:x_base_tree)) ;
       assert_bool "(x*, {y})* not <= (x*, {x})"
-        (not (Domain.( <= ) ~lhs:x_star_tree_diff_trace ~rhs:x_star_tree)) ;
+        (not (Domain.leq ~lhs:x_star_tree_diff_trace ~rhs:x_star_tree)) ;
       assert_bool "(x*, {x})* not <= (x*, {y})"
-        (not (Domain.( <= ) ~lhs:x_star_tree ~rhs:x_star_tree_diff_trace))
+        (not (Domain.leq ~lhs:x_star_tree ~rhs:x_star_tree_diff_trace))
     in
     "lteq" >:: lteq_test_
   in