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Z3---4.15.1.UNS-Prf.s

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%------------------------------------------------------------------------------
% File     : Z3---4.15.1
% Problem  : SWC239-1 : TPTP v9.0.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp
% Command  : run_E %s %d THM

% Computer : n013.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Sat Jun 21 05:30:38 AM UTC 2025

% Result   : Unsatisfiable 0.22s 0.54s
% Output   : Proof 0.22s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   12
%            Number of leaves      :   50
% Syntax   : Number of formulae    :  125 (  32 unt;   0 typ;   0 def)
%            Number of atoms       :  967 ( 209 equ)
%            Maximal formula atoms :   19 (   7 avg)
%            Number of connectives : 1558 ( 774   ~; 708   |;   0   &)
%                                         (  76 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   12 (   6 avg)
%            Maximal term depth    :    4 (   1 avg)
%            Number of FOOLs       :   58 (  58 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of predicates  :   10 (   8 usr;   1 prp; 0-3 aty)
%            Number of functors    :    7 (   7 usr;   4 con; 0-3 aty)
%            Number of variables   :  257 ( 233   !;   0   ?; 257   :)

% Comments : 
%------------------------------------------------------------------------------
tff(ssItem_type,type,
    ssItem: $i > $o ).

tff(sk5_type,type,
    sk5: ( $i * $i * $i ) > $i ).

tff(sk6_type,type,
    sk6: $i ).

tff(nil_type,type,
    nil: $i ).

tff(sk1_type,type,
    sk1: $i ).

tff(app_type,type,
    app: ( $i * $i ) > $i ).

tff(cons_type,type,
    cons: ( $i * $i ) > $i ).

tff(sk3_type,type,
    sk3: $i ).

tff(ssList_type,type,
    ssList: $i > $o ).

tff(lt_type,type,
    lt: ( $i * $i ) > $o ).

tff(leq_type,type,
    leq: ( $i * $i ) > $o ).

tff(1,plain,
    ( ( sk1 = sk3 )
  <=> ( sk1 = sk3 ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(2,axiom,
    sk1 = sk3,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_6) ).

tff(3,plain,
    sk1 = sk3,
    inference(modus_ponens,[status(thm)],[2,1]) ).

tff(4,plain,
    sk3 = sk1,
    inference(symmetry,[status(thm)],[3]) ).

tff(5,plain,
    ( ssList(sk3)
  <=> ssList(sk3) ),
    inference(rewrite,[status(thm)],[]) ).

tff(6,axiom,
    ssList(sk3),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_3) ).

tff(7,plain,
    ssList(sk3),
    inference(modus_ponens,[status(thm)],[6,5]) ).

tff(8,plain,
    ^ [U: $i] :
      refl(( ( ~ ssList(U)
          | ( app(U,nil) = U ) )
      <=> ( ~ ssList(U)
          | ( app(U,nil) = U ) ) )),
    inference(bind,[status(th)],[]) ).

tff(9,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( app(U,nil) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( app(U,nil) = U ) ) ),
    inference(quant_intro,[status(thm)],[8]) ).

tff(10,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( app(U,nil) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( app(U,nil) = U ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(11,axiom,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(U,nil) = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause73) ).

tff(12,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(U,nil) = U ) ),
    inference(modus_ponens,[status(thm)],[11,10]) ).

tff(13,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(U,nil) = U ) ),
    inference(skolemize,[status(sab)],[12]) ).

tff(14,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(U,nil) = U ) ),
    inference(modus_ponens,[status(thm)],[13,9]) ).

tff(15,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( app(U,nil) = U ) )
      | ~ ssList(sk3)
      | ( app(sk3,nil) = sk3 ) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( app(U,nil) = U ) )
      | ~ ssList(sk3)
      | ( app(sk3,nil) = sk3 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(16,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( app(U,nil) = U ) )
    | ~ ssList(sk3)
    | ( app(sk3,nil) = sk3 ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(17,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( app(U,nil) = U ) )
    | ~ ssList(sk3)
    | ( app(sk3,nil) = sk3 ) ),
    inference(modus_ponens,[status(thm)],[16,15]) ).

tff(18,plain,
    app(sk3,nil) = sk3,
    inference(unit_resolution,[status(thm)],[17,14,7]) ).

tff(19,plain,
    ^ [U: $i] :
      refl(( ( ~ ssList(U)
          | ( app(nil,U) = U ) )
      <=> ( ~ ssList(U)
          | ( app(nil,U) = U ) ) )),
    inference(bind,[status(th)],[]) ).

tff(20,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) ) ),
    inference(quant_intro,[status(thm)],[19]) ).

tff(21,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( app(nil,U) = U ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(22,axiom,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause74) ).

tff(23,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    inference(modus_ponens,[status(thm)],[22,21]) ).

tff(24,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    inference(skolemize,[status(sab)],[23]) ).

tff(25,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( app(nil,U) = U ) ),
    inference(modus_ponens,[status(thm)],[24,20]) ).

tff(26,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( app(nil,U) = U ) )
      | ~ ssList(sk3)
      | ( app(nil,sk3) = sk3 ) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( app(nil,U) = U ) )
      | ~ ssList(sk3)
      | ( app(nil,sk3) = sk3 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(27,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( app(nil,U) = U ) )
    | ~ ssList(sk3)
    | ( app(nil,sk3) = sk3 ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(28,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( app(nil,U) = U ) )
    | ~ ssList(sk3)
    | ( app(nil,sk3) = sk3 ) ),
    inference(modus_ponens,[status(thm)],[27,26]) ).

tff(29,plain,
    app(nil,sk3) = sk3,
    inference(unit_resolution,[status(thm)],[28,25,7]) ).

tff(30,plain,
    ( ( nil = sk1 )
  <=> ( nil = sk3 ) ),
    inference(monotonicity,[status(thm)],[3]) ).

tff(31,plain,
    ( ( nil != sk1 )
  <=> ( nil != sk3 ) ),
    inference(monotonicity,[status(thm)],[30]) ).

tff(32,plain,
    ( ( nil != sk1 )
  <=> ( nil != sk1 ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(33,axiom,
    nil != sk1,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_7) ).

tff(34,plain,
    nil != sk1,
    inference(modus_ponens,[status(thm)],[33,32]) ).

tff(35,plain,
    nil != sk3,
    inference(modus_ponens,[status(thm)],[34,31]) ).

tff(36,plain,
    ( ( ( cons(sk6,nil) = sk3 )
      | ( nil = sk3 ) )
  <=> ( ( cons(sk6,nil) = sk3 )
      | ( nil = sk3 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(37,axiom,
    ( ( cons(sk6,nil) = sk3 )
    | ( nil = sk3 ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_18) ).

tff(38,plain,
    ( ( cons(sk6,nil) = sk3 )
    | ( nil = sk3 ) ),
    inference(modus_ponens,[status(thm)],[37,36]) ).

tff(39,plain,
    ( ( cons(sk6,nil) = sk3 )
    | ( nil = sk3 ) ),
    inference(modus_ponens,[status(thm)],[38,36]) ).

tff(40,plain,
    ( ( cons(sk6,nil) = sk3 )
    | ( nil = sk3 ) ),
    inference(modus_ponens,[status(thm)],[39,36]) ).

tff(41,plain,
    ( ( cons(sk6,nil) = sk3 )
    | ( nil = sk3 ) ),
    inference(modus_ponens,[status(thm)],[40,36]) ).

tff(42,plain,
    ( ( cons(sk6,nil) = sk3 )
    | ( nil = sk3 ) ),
    inference(modus_ponens,[status(thm)],[41,36]) ).

tff(43,plain,
    cons(sk6,nil) = sk3,
    inference(unit_resolution,[status(thm)],[42,35]) ).

tff(44,plain,
    app(nil,cons(sk6,nil)) = app(nil,sk3),
    inference(monotonicity,[status(thm)],[43]) ).

tff(45,plain,
    app(nil,cons(sk6,nil)) = sk3,
    inference(transitivity,[status(thm)],[44,29]) ).

tff(46,plain,
    app(app(nil,cons(sk6,nil)),nil) = app(sk3,nil),
    inference(monotonicity,[status(thm)],[45]) ).

tff(47,plain,
    app(app(nil,cons(sk6,nil)),nil) = sk1,
    inference(transitivity,[status(thm)],[46,18,4]) ).

tff(48,plain,
    ( ( ssItem(sk6)
      | ( nil = sk3 ) )
  <=> ( ssItem(sk6)
      | ( nil = sk3 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(49,axiom,
    ( ssItem(sk6)
    | ( nil = sk3 ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_14) ).

tff(50,plain,
    ( ssItem(sk6)
    | ( nil = sk3 ) ),
    inference(modus_ponens,[status(thm)],[49,48]) ).

tff(51,plain,
    ssItem(sk6),
    inference(unit_resolution,[status(thm)],[50,35]) ).

tff(52,plain,
    ^ [B: $i,A: $i,C: $i] :
      refl(( ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
    inference(bind,[status(th)],[]) ).

tff(53,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) ) ),
    inference(quant_intro,[status(thm)],[52]) ).

tff(54,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(55,plain,
    ^ [B: $i,A: $i,C: $i] :
      trans(monotonicity(trans(monotonicity(rewrite(( ( ~ ssItem(A)
                  | ~ ssList(B)
                  | ~ ssList(C) )
              <=> ( ~ ssList(C)
                  | ~ ssItem(A)
                  | ~ ssList(B) ) )),
              ( ( ~ ssItem(A)
                | ~ ssList(B)
                | ~ ssList(C)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            rewrite(( ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            ( ( ~ ssItem(A)
              | ~ ssList(B)
              | ~ ssList(C)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) )
          <=> ( ~ ssList(C)
              | ~ ssItem(A)
              | ~ ssList(B)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
          ( ( ~ ssItem(A)
            | ~ ssList(B)
            | ~ ssList(C)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ssItem(sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ssItem(sk5(C,B,A)) ) )),
        rewrite(( ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ssItem(sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
        ( ( ~ ssItem(A)
          | ~ ssList(B)
          | ~ ssList(C)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ssItem(sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
    inference(bind,[status(th)],[]) ).

tff(56,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssList(B)
        | ~ ssList(C)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ssItem(sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ssItem(sk5(C,B,A))
        | ( app(app(B,cons(A,nil)),C) != sk1 ) ) ),
    inference(quant_intro,[status(thm)],[55]) ).

tff(57,axiom,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssList(B)
      | ~ ssList(C)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | ssItem(sk5(C,B,A)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_8) ).

tff(58,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(modus_ponens,[status(thm)],[57,56]) ).

tff(59,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(modus_ponens,[status(thm)],[58,54]) ).

tff(60,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(skolemize,[status(sab)],[59]) ).

tff(61,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ssItem(sk5(C,B,A))
      | ( app(app(B,cons(A,nil)),C) != sk1 ) ),
    inference(modus_ponens,[status(thm)],[60,53]) ).

tff(62,plain,
    ( ssList(nil)
  <=> ssList(nil) ),
    inference(rewrite,[status(thm)],[]) ).

tff(63,axiom,
    ssList(nil),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause8) ).

tff(64,plain,
    ssList(nil),
    inference(modus_ponens,[status(thm)],[63,62]) ).

tff(65,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ssItem(sk5(nil,nil,sk6)) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ssItem(sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(66,plain,
    ( ( ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ssItem(sk5(nil,nil,sk6))
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 ) )
  <=> ( ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ssItem(sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(67,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ssItem(sk5(nil,nil,sk6))
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 ) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ssItem(sk5(nil,nil,sk6)) ) ),
    inference(monotonicity,[status(thm)],[66]) ).

tff(68,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ssItem(sk5(nil,nil,sk6))
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 ) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ssItem(sk5(C,B,A))
            | ( app(app(B,cons(A,nil)),C) != sk1 ) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ssItem(sk5(nil,nil,sk6)) ) ),
    inference(transitivity,[status(thm)],[67,65]) ).

tff(69,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) )
    | ~ ssList(nil)
    | ~ ssItem(sk6)
    | ~ ssList(nil)
    | ssItem(sk5(nil,nil,sk6))
    | ( app(app(nil,cons(sk6,nil)),nil) != sk1 ) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(70,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ssItem(sk5(C,B,A))
          | ( app(app(B,cons(A,nil)),C) != sk1 ) )
    | ~ ssList(nil)
    | ~ ssItem(sk6)
    | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | ssItem(sk5(nil,nil,sk6)) ),
    inference(modus_ponens,[status(thm)],[69,68]) ).

tff(71,plain,
    ( ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | ssItem(sk5(nil,nil,sk6)) ),
    inference(unit_resolution,[status(thm)],[70,64,61,51]) ).

tff(72,plain,
    ssItem(sk5(nil,nil,sk6)),
    inference(unit_resolution,[status(thm)],[71,47]) ).

tff(73,plain,
    ^ [B: $i,A: $i,C: $i] :
      refl(( ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | lt(A,sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | lt(A,sk5(C,B,A)) ) )),
    inference(bind,[status(th)],[]) ).

tff(74,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | lt(A,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | lt(A,sk5(C,B,A)) ) ),
    inference(quant_intro,[status(thm)],[73]) ).

tff(75,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | lt(A,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | lt(A,sk5(C,B,A)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(76,plain,
    ^ [B: $i,A: $i,C: $i] :
      trans(monotonicity(trans(monotonicity(rewrite(( ( ~ ssItem(A)
                  | ~ ssList(B)
                  | ~ ssList(C) )
              <=> ( ~ ssList(C)
                  | ~ ssItem(A)
                  | ~ ssList(B) ) )),
              ( ( ~ ssItem(A)
                | ~ ssList(B)
                | ~ ssList(C)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            rewrite(( ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            ( ( ~ ssItem(A)
              | ~ ssList(B)
              | ~ ssList(C)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) )
          <=> ( ~ ssList(C)
              | ~ ssItem(A)
              | ~ ssList(B)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
          ( ( ~ ssItem(A)
            | ~ ssList(B)
            | ~ ssList(C)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) ) )),
        rewrite(( ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) ) )),
        ( ( ~ ssItem(A)
          | ~ ssList(B)
          | ~ ssList(C)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | lt(A,sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | lt(A,sk5(C,B,A)) ) )),
    inference(bind,[status(th)],[]) ).

tff(77,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssList(B)
        | ~ ssList(C)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | lt(A,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | lt(A,sk5(C,B,A)) ) ),
    inference(quant_intro,[status(thm)],[76]) ).

tff(78,axiom,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssList(B)
      | ~ ssList(C)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | lt(A,sk5(C,B,A)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_11) ).

tff(79,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | lt(A,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[78,77]) ).

tff(80,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | lt(A,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[79,75]) ).

tff(81,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | lt(A,sk5(C,B,A)) ),
    inference(skolemize,[status(sab)],[80]) ).

tff(82,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | lt(A,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[81,74]) ).

tff(83,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(84,plain,
    ( ( ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(85,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(monotonicity,[status(thm)],[84]) ).

tff(86,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | lt(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(transitivity,[status(thm)],[85,83]) ).

tff(87,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | lt(A,sk5(C,B,A)) )
    | ~ ssList(nil)
    | ~ ssItem(sk6)
    | ~ ssList(nil)
    | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | lt(sk6,sk5(nil,nil,sk6)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(88,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | lt(A,sk5(C,B,A)) )
    | ~ ssList(nil)
    | ~ ssItem(sk6)
    | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | lt(sk6,sk5(nil,nil,sk6)) ),
    inference(modus_ponens,[status(thm)],[87,86]) ).

tff(89,plain,
    ( ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | lt(sk6,sk5(nil,nil,sk6)) ),
    inference(unit_resolution,[status(thm)],[88,64,82,51]) ).

tff(90,plain,
    lt(sk6,sk5(nil,nil,sk6)),
    inference(unit_resolution,[status(thm)],[89,47]) ).

tff(91,plain,
    ^ [B: $i,A: $i,C: $i] :
      refl(( ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ~ leq(A,sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ~ leq(A,sk5(C,B,A)) ) )),
    inference(bind,[status(th)],[]) ).

tff(92,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ~ leq(A,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ~ leq(A,sk5(C,B,A)) ) ),
    inference(quant_intro,[status(thm)],[91]) ).

tff(93,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ~ leq(A,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ~ leq(A,sk5(C,B,A)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(94,plain,
    ^ [B: $i,A: $i,C: $i] :
      trans(monotonicity(trans(monotonicity(rewrite(( ( ~ ssItem(A)
                  | ~ ssList(B)
                  | ~ ssList(C) )
              <=> ( ~ ssList(C)
                  | ~ ssItem(A)
                  | ~ ssList(B) ) )),
              ( ( ~ ssItem(A)
                | ~ ssList(B)
                | ~ ssList(C)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            rewrite(( ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) )
            <=> ( ~ ssList(C)
                | ~ ssItem(A)
                | ~ ssList(B)
                | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
            ( ( ~ ssItem(A)
              | ~ ssList(B)
              | ~ ssList(C)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) )
          <=> ( ~ ssList(C)
              | ~ ssItem(A)
              | ~ ssList(B)
              | ( app(app(B,cons(A,nil)),C) != sk1 ) ) )),
          ( ( ~ ssItem(A)
            | ~ ssList(B)
            | ~ ssList(C)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) ) )),
        rewrite(( ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
        <=> ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) ) )),
        ( ( ~ ssItem(A)
          | ~ ssList(B)
          | ~ ssList(C)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ~ leq(A,sk5(C,B,A)) )
      <=> ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ~ leq(A,sk5(C,B,A)) ) )),
    inference(bind,[status(th)],[]) ).

tff(95,plain,
    ( ! [B: $i,A: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssList(B)
        | ~ ssList(C)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ~ leq(A,sk5(C,B,A)) )
  <=> ! [B: $i,A: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(A)
        | ~ ssList(B)
        | ( app(app(B,cons(A,nil)),C) != sk1 )
        | ~ leq(A,sk5(C,B,A)) ) ),
    inference(quant_intro,[status(thm)],[94]) ).

tff(96,axiom,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssList(B)
      | ~ ssList(C)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | ~ leq(A,sk5(C,B,A)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_12) ).

tff(97,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | ~ leq(A,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[96,95]) ).

tff(98,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | ~ leq(A,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[97,93]) ).

tff(99,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | ~ leq(A,sk5(C,B,A)) ),
    inference(skolemize,[status(sab)],[98]) ).

tff(100,plain,
    ! [B: $i,A: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(A)
      | ~ ssList(B)
      | ( app(app(B,cons(A,nil)),C) != sk1 )
      | ~ leq(A,sk5(C,B,A)) ),
    inference(modus_ponens,[status(thm)],[99,92]) ).

tff(101,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(102,plain,
    ( ( ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(103,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) ) ),
    inference(monotonicity,[status(thm)],[102]) ).

tff(104,plain,
    ( ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ~ ssList(nil)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [B: $i,A: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(A)
            | ~ ssList(B)
            | ( app(app(B,cons(A,nil)),C) != sk1 )
            | ~ leq(A,sk5(C,B,A)) )
      | ~ ssList(nil)
      | ~ ssItem(sk6)
      | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
      | ~ leq(sk6,sk5(nil,nil,sk6)) ) ),
    inference(transitivity,[status(thm)],[103,101]) ).

tff(105,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ~ leq(A,sk5(C,B,A)) )
    | ~ ssList(nil)
    | ~ ssItem(sk6)
    | ~ ssList(nil)
    | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | ~ leq(sk6,sk5(nil,nil,sk6)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(106,plain,
    ( ~ ! [B: $i,A: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(A)
          | ~ ssList(B)
          | ( app(app(B,cons(A,nil)),C) != sk1 )
          | ~ leq(A,sk5(C,B,A)) )
    | ~ ssList(nil)
    | ~ ssItem(sk6)
    | ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | ~ leq(sk6,sk5(nil,nil,sk6)) ),
    inference(modus_ponens,[status(thm)],[105,104]) ).

tff(107,plain,
    ( ( app(app(nil,cons(sk6,nil)),nil) != sk1 )
    | ~ leq(sk6,sk5(nil,nil,sk6)) ),
    inference(unit_resolution,[status(thm)],[106,64,100,51]) ).

tff(108,plain,
    ~ leq(sk6,sk5(nil,nil,sk6)),
    inference(unit_resolution,[status(thm)],[107,47]) ).

tff(109,plain,
    ^ [V: $i,U: $i] :
      refl(( ( ~ ssItem(U)
          | ~ ssItem(V)
          | leq(U,V)
          | ~ lt(U,V) )
      <=> ( ~ ssItem(U)
          | ~ ssItem(V)
          | leq(U,V)
          | ~ lt(U,V) ) )),
    inference(bind,[status(th)],[]) ).

tff(110,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssItem(V)
        | leq(U,V)
        | ~ lt(U,V) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssItem(V)
        | leq(U,V)
        | ~ lt(U,V) ) ),
    inference(quant_intro,[status(thm)],[109]) ).

tff(111,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssItem(V)
        | leq(U,V)
        | ~ lt(U,V) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssItem(V)
        | leq(U,V)
        | ~ lt(U,V) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(112,plain,
    ^ [V: $i,U: $i] :
      trans(monotonicity(trans(monotonicity(rewrite(( ( ~ lt(U,V)
                  | ~ ssItem(V) )
              <=> ( ~ ssItem(V)
                  | ~ lt(U,V) ) )),
              ( ( ~ lt(U,V)
                | ~ ssItem(V)
                | ~ ssItem(U) )
            <=> ( ~ ssItem(V)
                | ~ lt(U,V)
                | ~ ssItem(U) ) )),
            rewrite(( ( ~ ssItem(V)
                | ~ lt(U,V)
                | ~ ssItem(U) )
            <=> ( ~ ssItem(U)
                | ~ ssItem(V)
                | ~ lt(U,V) ) )),
            ( ( ~ lt(U,V)
              | ~ ssItem(V)
              | ~ ssItem(U) )
          <=> ( ~ ssItem(U)
              | ~ ssItem(V)
              | ~ lt(U,V) ) )),
          ( ( ~ lt(U,V)
            | ~ ssItem(V)
            | ~ ssItem(U)
            | leq(U,V) )
        <=> ( ~ ssItem(U)
            | ~ ssItem(V)
            | ~ lt(U,V)
            | leq(U,V) ) )),
        rewrite(( ( ~ ssItem(U)
            | ~ ssItem(V)
            | ~ lt(U,V)
            | leq(U,V) )
        <=> ( ~ ssItem(U)
            | ~ ssItem(V)
            | leq(U,V)
            | ~ lt(U,V) ) )),
        ( ( ~ lt(U,V)
          | ~ ssItem(V)
          | ~ ssItem(U)
          | leq(U,V) )
      <=> ( ~ ssItem(U)
          | ~ ssItem(V)
          | leq(U,V)
          | ~ lt(U,V) ) )),
    inference(bind,[status(th)],[]) ).

tff(113,plain,
    ( ! [V: $i,U: $i] :
        ( ~ lt(U,V)
        | ~ ssItem(V)
        | ~ ssItem(U)
        | leq(U,V) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssItem(V)
        | leq(U,V)
        | ~ lt(U,V) ) ),
    inference(quant_intro,[status(thm)],[112]) ).

tff(114,axiom,
    ! [V: $i,U: $i] :
      ( ~ lt(U,V)
      | ~ ssItem(V)
      | ~ ssItem(U)
      | leq(U,V) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause103) ).

tff(115,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssItem(V)
      | leq(U,V)
      | ~ lt(U,V) ),
    inference(modus_ponens,[status(thm)],[114,113]) ).

tff(116,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssItem(V)
      | leq(U,V)
      | ~ lt(U,V) ),
    inference(modus_ponens,[status(thm)],[115,111]) ).

tff(117,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssItem(V)
      | leq(U,V)
      | ~ lt(U,V) ),
    inference(skolemize,[status(sab)],[116]) ).

tff(118,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssItem(V)
      | leq(U,V)
      | ~ lt(U,V) ),
    inference(modus_ponens,[status(thm)],[117,110]) ).

tff(119,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssItem(V)
            | leq(U,V)
            | ~ lt(U,V) )
      | ~ ssItem(sk6)
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ ssItem(sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssItem(V)
            | leq(U,V)
            | ~ lt(U,V) )
      | ~ ssItem(sk6)
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ ssItem(sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(120,plain,
    ( ( ~ ssItem(sk6)
      | ~ ssItem(sk5(nil,nil,sk6))
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ssItem(sk6)
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ ssItem(sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(121,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssItem(V)
            | leq(U,V)
            | ~ lt(U,V) )
      | ~ ssItem(sk6)
      | ~ ssItem(sk5(nil,nil,sk6))
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssItem(V)
            | leq(U,V)
            | ~ lt(U,V) )
      | ~ ssItem(sk6)
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ ssItem(sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(monotonicity,[status(thm)],[120]) ).

tff(122,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssItem(V)
            | leq(U,V)
            | ~ lt(U,V) )
      | ~ ssItem(sk6)
      | ~ ssItem(sk5(nil,nil,sk6))
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssItem(V)
            | leq(U,V)
            | ~ lt(U,V) )
      | ~ ssItem(sk6)
      | leq(sk6,sk5(nil,nil,sk6))
      | ~ ssItem(sk5(nil,nil,sk6))
      | ~ lt(sk6,sk5(nil,nil,sk6)) ) ),
    inference(transitivity,[status(thm)],[121,119]) ).

tff(123,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssItem(V)
          | leq(U,V)
          | ~ lt(U,V) )
    | ~ ssItem(sk6)
    | ~ ssItem(sk5(nil,nil,sk6))
    | leq(sk6,sk5(nil,nil,sk6))
    | ~ lt(sk6,sk5(nil,nil,sk6)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(124,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssItem(V)
          | leq(U,V)
          | ~ lt(U,V) )
    | ~ ssItem(sk6)
    | leq(sk6,sk5(nil,nil,sk6))
    | ~ ssItem(sk5(nil,nil,sk6))
    | ~ lt(sk6,sk5(nil,nil,sk6)) ),
    inference(modus_ponens,[status(thm)],[123,122]) ).

tff(125,plain,
    $false,
    inference(unit_resolution,[status(thm)],[124,118,51,108,90,72]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.08/0.14  % Problem    : SWC239-1 : TPTP v9.0.0. Released v2.4.0.
% 0.08/0.14  % Command    : run_E %s %d THM
% 0.13/0.35  % Computer : n013.cluster.edu
% 0.13/0.35  % Model    : x86_64 x86_64
% 0.13/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35  % Memory   : 8042.1875MB
% 0.13/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35  % CPULimit   : 300
% 0.13/0.35  % WCLimit    : 300
% 0.13/0.35  % DateTime   : Fri Jun 20 08:42:23 EDT 2025
% 0.13/0.35  % CPUTime    : 
% 0.22/0.54  % SZS status Unsatisfiable
% 0.22/0.54  % SZS output start Proof
% See solution above
% 0.22/0.56  % E exiting
%------------------------------------------------------------------------------