TSTP Solution File: SWC014-1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : SWC014-1 : TPTP v8.1.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n001.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 : Tue Sep 20 11:54:39 EDT 2022

% Result   : Unsatisfiable 0.55s 0.63s
% Output   : Proof 0.62s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   16
%            Number of leaves      :   75
% Syntax   : Number of formulae    :  166 (  36 unt;  13 typ;   0 def)
%            Number of atoms       : 1140 ( 396 equ)
%            Maximal formula atoms :   23 (   7 avg)
%            Number of connectives : 1779 ( 878   ~; 788   |;   0   &)
%                                         ( 113 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   12 (   5 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of FOOLs       :   86 (  86 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    9 (   6   >;   3   *;   0   +;   0  <<)
%            Number of predicates  :   14 (  11 usr;   2 prp; 0-5 aty)
%            Number of functors    :   10 (  10 usr;   7 con; 0-2 aty)
%            Number of variables   :  210 ( 186   !;   0   ?; 210   :)

% Comments : 
%------------------------------------------------------------------------------
tff(sk4_type,type,
    sk4: $i ).

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

tff(neq_type,type,
    neq: ( $i * $i ) > $o ).

tff(sk2_type,type,
    sk2: $i ).

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

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

tff(tl_type,type,
    tl: $i > $i ).

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

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

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

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

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

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

tff(1,plain,
    ( ( nil = sk4 )
  <=> ( sk4 = nil ) ),
    inference(commutativity,[status(thm)],]) ).

tff(2,plain,
    ( ( sk4 = nil )
  <=> ( nil = sk4 ) ),
    inference(symmetry,[status(thm)],[1]) ).

tff(3,plain,
    ( ( sk4 != nil )
  <=> ( nil != sk4 ) ),
    inference(monotonicity,[status(thm)],[2]) ).

tff(4,plain,
    ( neq(sk2,nil)
  <=> neq(sk4,nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(5,plain,
    ( neq(sk2,nil)
  <=> neq(sk2,nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(6,plain,
    ( ( neq(sk2,nil)
      | neq(sk2,nil) )
  <=> neq(sk2,nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(7,axiom,
    ( neq(sk2,nil)
    | neq(sk2,nil) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_7) ).

tff(8,plain,
    neq(sk2,nil),
    inference(modus_ponens,[status(thm)],[7,6]) ).

tff(9,plain,
    neq(sk2,nil),
    inference(modus_ponens,[status(thm)],[8,5]) ).

tff(10,plain,
    neq(sk4,nil),
    inference(modus_ponens,[status(thm)],[9,4]) ).

tff(11,plain,
    ( ssList(sk2)
  <=> ssList(sk4) ),
    inference(rewrite,[status(thm)],]) ).

tff(12,plain,
    ( ssList(sk2)
  <=> ssList(sk2) ),
    inference(rewrite,[status(thm)],]) ).

tff(13,axiom,
    ssList(sk2),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_2) ).

tff(14,plain,
    ssList(sk2),
    inference(modus_ponens,[status(thm)],[13,12]) ).

tff(15,plain,
    ssList(sk4),
    inference(modus_ponens,[status(thm)],[14,11]) ).

tff(16,plain,
    ^ [V: $i,U: $i] :
      refl(
        ( ( ~ ssList(U)
          | ~ ssList(V)
          | ( U != V )
          | ~ neq(U,V) )
      <=> ( ~ ssList(U)
          | ~ ssList(V)
          | ( U != V )
          | ~ neq(U,V) ) )),
    inference(bind,[status(th)],]) ).

tff(17,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( U != V )
        | ~ neq(U,V) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( U != V )
        | ~ neq(U,V) ) ),
    inference(quant_intro,[status(thm)],[16]) ).

tff(18,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( U != V )
        | ~ neq(U,V) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( U != V )
        | ~ neq(U,V) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(19,plain,
    ^ [V: $i,U: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ( ( U != V )
              | ~ neq(U,V)
              | ~ ssList(V) )
          <=> ( ~ ssList(V)
              | ( U != V )
              | ~ neq(U,V) ) )),
          ( ( ( U != V )
            | ~ neq(U,V)
            | ~ ssList(V)
            | ~ ssList(U) )
        <=> ( ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V)
            | ~ ssList(U) ) )),
        rewrite(
          ( ( ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V)
            | ~ ssList(U) )
        <=> ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) ) )),
        ( ( ( U != V )
          | ~ neq(U,V)
          | ~ ssList(V)
          | ~ ssList(U) )
      <=> ( ~ ssList(U)
          | ~ ssList(V)
          | ( U != V )
          | ~ neq(U,V) ) )),
    inference(bind,[status(th)],]) ).

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

tff(21,axiom,
    ! [V: $i,U: $i] :
      ( ( U != V )
      | ~ neq(U,V)
      | ~ ssList(V)
      | ~ ssList(U) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause115) ).

tff(22,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( U != V )
      | ~ neq(U,V) ),
    inference(modus_ponens,[status(thm)],[21,20]) ).

tff(23,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( U != V )
      | ~ neq(U,V) ),
    inference(modus_ponens,[status(thm)],[22,18]) ).

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

tff(25,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( U != V )
      | ~ neq(U,V) ),
    inference(modus_ponens,[status(thm)],[24,17]) ).

tff(26,plain,
    ( ssList(nil)
  <=> ssList(nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(27,axiom,
    ssList(nil),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause8) ).

tff(28,plain,
    ssList(nil),
    inference(modus_ponens,[status(thm)],[27,26]) ).

tff(29,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ neq(sk4,nil)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( sk4 != nil ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ neq(sk4,nil)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( sk4 != nil ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(30,plain,
    ( ( ~ ssList(sk4)
      | ~ ssList(nil)
      | ( sk4 != nil )
      | ~ neq(sk4,nil) )
  <=> ( ~ neq(sk4,nil)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( sk4 != nil ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(31,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(sk4)
      | ~ ssList(nil)
      | ( sk4 != nil )
      | ~ neq(sk4,nil) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ neq(sk4,nil)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( sk4 != nil ) ) ),
    inference(monotonicity,[status(thm)],[30]) ).

tff(32,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(sk4)
      | ~ ssList(nil)
      | ( sk4 != nil )
      | ~ neq(sk4,nil) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ neq(sk4,nil)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( sk4 != nil ) ) ),
    inference(transitivity,[status(thm)],[31,29]) ).

tff(33,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( U != V )
          | ~ neq(U,V) )
    | ~ ssList(sk4)
    | ~ ssList(nil)
    | ( sk4 != nil )
    | ~ neq(sk4,nil) ),
    inference(quant_inst,[status(thm)],]) ).

tff(34,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( U != V )
          | ~ neq(U,V) )
    | ~ neq(sk4,nil)
    | ~ ssList(nil)
    | ~ ssList(sk4)
    | ( sk4 != nil ) ),
    inference(modus_ponens,[status(thm)],[33,32]) ).

tff(35,plain,
    sk4 != nil,
    inference(unit_resolution,[status(thm)],[34,28,25,15,10]) ).

tff(36,plain,
    nil != sk4,
    inference(modus_ponens,[status(thm)],[35,3]) ).

tff(37,plain,
    ( ( ssList(sk6)
      | $false )
  <=> ssList(sk6) ),
    inference(rewrite,[status(thm)],]) ).

tff(38,plain,
    ( ~ $true
  <=> $false ),
    inference(rewrite,[status(thm)],]) ).

tff(39,plain,
    ( neq(sk4,nil)
  <=> $true ),
    inference(iff_true,[status(thm)],[10]) ).

tff(40,plain,
    ( ~ neq(sk4,nil)
  <=> ~ $true ),
    inference(monotonicity,[status(thm)],[39]) ).

tff(41,plain,
    ( ~ neq(sk4,nil)
  <=> $false ),
    inference(transitivity,[status(thm)],[40,38]) ).

tff(42,plain,
    ( ( ssList(sk6)
      | ~ neq(sk4,nil) )
  <=> ( ssList(sk6)
      | $false ) ),
    inference(monotonicity,[status(thm)],[41]) ).

tff(43,plain,
    ( ( ssList(sk6)
      | ~ neq(sk4,nil) )
  <=> ssList(sk6) ),
    inference(transitivity,[status(thm)],[42,37]) ).

tff(44,plain,
    ( ( ssList(sk6)
      | ~ neq(sk4,nil) )
  <=> ( ssList(sk6)
      | ~ neq(sk4,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(45,axiom,
    ( ssList(sk6)
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_16) ).

tff(46,plain,
    ( ssList(sk6)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[45,44]) ).

tff(47,plain,
    ssList(sk6),
    inference(modus_ponens,[status(thm)],[46,43]) ).

tff(48,plain,
    ( ( ssItem(sk5)
      | $false )
  <=> ssItem(sk5) ),
    inference(rewrite,[status(thm)],]) ).

tff(49,plain,
    ( ( ssItem(sk5)
      | ~ neq(sk4,nil) )
  <=> ( ssItem(sk5)
      | $false ) ),
    inference(monotonicity,[status(thm)],[41]) ).

tff(50,plain,
    ( ( ssItem(sk5)
      | ~ neq(sk4,nil) )
  <=> ssItem(sk5) ),
    inference(transitivity,[status(thm)],[49,48]) ).

tff(51,plain,
    ( ( ssItem(sk5)
      | ~ neq(sk4,nil) )
  <=> ( ssItem(sk5)
      | ~ neq(sk4,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(52,axiom,
    ( ssItem(sk5)
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_15) ).

tff(53,plain,
    ( ssItem(sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[52,51]) ).

tff(54,plain,
    ssItem(sk5),
    inference(modus_ponens,[status(thm)],[53,50]) ).

tff(55,plain,
    ^ [V: $i,U: $i] :
      refl(
        ( ( ~ ssItem(U)
          | ~ ssList(V)
          | ( tl(cons(U,V)) = V ) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ( tl(cons(U,V)) = V ) ) )),
    inference(bind,[status(th)],]) ).

tff(56,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( tl(cons(U,V)) = V ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( tl(cons(U,V)) = V ) ) ),
    inference(quant_intro,[status(thm)],[55]) ).

tff(57,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( tl(cons(U,V)) = V ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( tl(cons(U,V)) = V ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(58,plain,
    ^ [V: $i,U: $i] :
      rewrite(
        ( ( ~ ssItem(U)
          | ~ ssList(V)
          | ( tl(cons(U,V)) = V ) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ( tl(cons(U,V)) = V ) ) )),
    inference(bind,[status(th)],]) ).

tff(59,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( tl(cons(U,V)) = V ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( tl(cons(U,V)) = V ) ) ),
    inference(quant_intro,[status(thm)],[58]) ).

tff(60,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( tl(cons(U,V)) = V ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause96) ).

tff(61,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( tl(cons(U,V)) = V ) ),
    inference(modus_ponens,[status(thm)],[60,59]) ).

tff(62,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( tl(cons(U,V)) = V ) ),
    inference(modus_ponens,[status(thm)],[61,57]) ).

tff(63,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( tl(cons(U,V)) = V ) ),
    inference(skolemize,[status(sab)],[62]) ).

tff(64,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( tl(cons(U,V)) = V ) ),
    inference(modus_ponens,[status(thm)],[63,56]) ).

tff(65,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ( tl(cons(U,V)) = V ) )
      | ~ ssItem(sk5)
      | ~ ssList(sk6)
      | ( tl(cons(sk5,sk6)) = sk6 ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ( tl(cons(U,V)) = V ) )
      | ~ ssItem(sk5)
      | ~ ssList(sk6)
      | ( tl(cons(sk5,sk6)) = sk6 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(66,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ( tl(cons(U,V)) = V ) )
    | ~ ssItem(sk5)
    | ~ ssList(sk6)
    | ( tl(cons(sk5,sk6)) = sk6 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(67,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ( tl(cons(U,V)) = V ) )
    | ~ ssItem(sk5)
    | ~ ssList(sk6)
    | ( tl(cons(sk5,sk6)) = sk6 ) ),
    inference(modus_ponens,[status(thm)],[66,65]) ).

tff(68,plain,
    tl(cons(sk5,sk6)) = sk6,
    inference(unit_resolution,[status(thm)],[67,64,54,47]) ).

tff(69,plain,
    ^ [V: $i,U: $i] :
      refl(
        ( ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) ) )),
    inference(bind,[status(th)],]) ).

tff(70,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) ) ),
    inference(quant_intro,[status(thm)],[69]) ).

tff(71,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(72,plain,
    ^ [V: $i,U: $i] :
      rewrite(
        ( ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
      <=> ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) ) )),
    inference(bind,[status(th)],]) ).

tff(73,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ~ ssList(V)
        | ( app(cons(U,nil),V) = cons(U,V) ) ) ),
    inference(quant_intro,[status(thm)],[72]) ).

tff(74,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause120) ).

tff(75,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(modus_ponens,[status(thm)],[74,73]) ).

tff(76,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(modus_ponens,[status(thm)],[75,71]) ).

tff(77,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(skolemize,[status(sab)],[76]) ).

tff(78,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ~ ssList(V)
      | ( app(cons(U,nil),V) = cons(U,V) ) ),
    inference(modus_ponens,[status(thm)],[77,70]) ).

tff(79,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ( app(cons(U,nil),V) = cons(U,V) ) )
      | ~ ssItem(sk5)
      | ~ ssList(sk6)
      | ( app(cons(sk5,nil),sk6) = cons(sk5,sk6) ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ~ ssList(V)
            | ( app(cons(U,nil),V) = cons(U,V) ) )
      | ~ ssItem(sk5)
      | ~ ssList(sk6)
      | ( app(cons(sk5,nil),sk6) = cons(sk5,sk6) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(80,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
    | ~ ssItem(sk5)
    | ~ ssList(sk6)
    | ( app(cons(sk5,nil),sk6) = cons(sk5,sk6) ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(81,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ~ ssList(V)
          | ( app(cons(U,nil),V) = cons(U,V) ) )
    | ~ ssItem(sk5)
    | ~ ssList(sk6)
    | ( app(cons(sk5,nil),sk6) = cons(sk5,sk6) ) ),
    inference(modus_ponens,[status(thm)],[80,79]) ).

tff(82,plain,
    app(cons(sk5,nil),sk6) = cons(sk5,sk6),
    inference(unit_resolution,[status(thm)],[81,78,54,47]) ).

tff(83,plain,
    ( ( $false
      | ( cons(sk5,nil) = sk3 ) )
  <=> ( cons(sk5,nil) = sk3 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(84,plain,
    ( ( ~ neq(sk4,nil)
      | ( cons(sk5,nil) = sk3 ) )
  <=> ( $false
      | ( cons(sk5,nil) = sk3 ) ) ),
    inference(monotonicity,[status(thm)],[41]) ).

tff(85,plain,
    ( ( ~ neq(sk4,nil)
      | ( cons(sk5,nil) = sk3 ) )
  <=> ( cons(sk5,nil) = sk3 ) ),
    inference(transitivity,[status(thm)],[84,83]) ).

tff(86,plain,
    ( ( ~ neq(sk4,nil)
      | ( cons(sk5,nil) = sk3 ) )
  <=> ( ~ neq(sk4,nil)
      | ( cons(sk5,nil) = sk3 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(87,plain,
    ( ( ( cons(sk5,nil) = sk3 )
      | ~ neq(sk4,nil) )
  <=> ( ~ neq(sk4,nil)
      | ( cons(sk5,nil) = sk3 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(88,axiom,
    ( ( cons(sk5,nil) = sk3 )
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_17) ).

tff(89,plain,
    ( ~ neq(sk4,nil)
    | ( cons(sk5,nil) = sk3 ) ),
    inference(modus_ponens,[status(thm)],[88,87]) ).

tff(90,plain,
    ( ~ neq(sk4,nil)
    | ( cons(sk5,nil) = sk3 ) ),
    inference(modus_ponens,[status(thm)],[89,86]) ).

tff(91,plain,
    cons(sk5,nil) = sk3,
    inference(modus_ponens,[status(thm)],[90,85]) ).

tff(92,plain,
    app(cons(sk5,nil),sk6) = app(sk3,sk6),
    inference(monotonicity,[status(thm)],[91]) ).

tff(93,plain,
    app(sk3,sk6) = app(cons(sk5,nil),sk6),
    inference(symmetry,[status(thm)],[92]) ).

tff(94,plain,
    ( ( $false
      | ( app(sk3,sk6) = sk4 ) )
  <=> ( app(sk3,sk6) = sk4 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(95,plain,
    ( ( app(cons(sk5,nil),sk6) = sk4 )
  <=> ( app(sk3,sk6) = sk4 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(96,plain,
    ( ( ~ neq(sk4,nil)
      | ( app(cons(sk5,nil),sk6) = sk4 ) )
  <=> ( $false
      | ( app(sk3,sk6) = sk4 ) ) ),
    inference(monotonicity,[status(thm)],[41,95]) ).

tff(97,plain,
    ( ( ~ neq(sk4,nil)
      | ( app(cons(sk5,nil),sk6) = sk4 ) )
  <=> ( app(sk3,sk6) = sk4 ) ),
    inference(transitivity,[status(thm)],[96,94]) ).

tff(98,plain,
    ( ( ~ neq(sk4,nil)
      | ( app(cons(sk5,nil),sk6) = sk4 ) )
  <=> ( ~ neq(sk4,nil)
      | ( app(cons(sk5,nil),sk6) = sk4 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(99,plain,
    ( ( ( app(cons(sk5,nil),sk6) = sk4 )
      | ~ neq(sk4,nil) )
  <=> ( ~ neq(sk4,nil)
      | ( app(cons(sk5,nil),sk6) = sk4 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(100,axiom,
    ( ( app(cons(sk5,nil),sk6) = sk4 )
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_18) ).

tff(101,plain,
    ( ~ neq(sk4,nil)
    | ( app(cons(sk5,nil),sk6) = sk4 ) ),
    inference(modus_ponens,[status(thm)],[100,99]) ).

tff(102,plain,
    ( ~ neq(sk4,nil)
    | ( app(cons(sk5,nil),sk6) = sk4 ) ),
    inference(modus_ponens,[status(thm)],[101,98]) ).

tff(103,plain,
    app(sk3,sk6) = sk4,
    inference(modus_ponens,[status(thm)],[102,97]) ).

tff(104,plain,
    sk4 = app(sk3,sk6),
    inference(symmetry,[status(thm)],[103]) ).

tff(105,plain,
    sk4 = cons(sk5,sk6),
    inference(transitivity,[status(thm)],[104,93,82]) ).

tff(106,plain,
    tl(sk4) = tl(cons(sk5,sk6)),
    inference(monotonicity,[status(thm)],[105]) ).

tff(107,plain,
    tl(sk4) = sk6,
    inference(transitivity,[status(thm)],[106,68]) ).

tff(108,plain,
    ^ [B: $i,A: $i] :
      refl(
        ( ( ~ ssList(A)
          | ~ ssList(B)
          | ~ neq(nil,sk4)
          | ( app(sk3,B) != A )
          | ( tl(sk4) != B )
          | ( sk4 != A ) )
      <=> ( ~ ssList(A)
          | ~ ssList(B)
          | ~ neq(nil,sk4)
          | ( app(sk3,B) != A )
          | ( tl(sk4) != B )
          | ( sk4 != A ) ) )),
    inference(bind,[status(th)],]) ).

tff(109,plain,
    ( ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ ssList(B)
        | ~ neq(nil,sk4)
        | ( app(sk3,B) != A )
        | ( tl(sk4) != B )
        | ( sk4 != A ) )
  <=> ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ ssList(B)
        | ~ neq(nil,sk4)
        | ( app(sk3,B) != A )
        | ( tl(sk4) != B )
        | ( sk4 != A ) ) ),
    inference(quant_intro,[status(thm)],[108]) ).

tff(110,plain,
    ^ [B: $i,A: $i] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              iff_true(
                mp(
                  mp(
                    mp(
                      asserted(
                        ( neq(sk2,nil)
                        | neq(sk2,nil) )),
                      rewrite(
                        ( ( neq(sk2,nil)
                          | neq(sk2,nil) )
                      <=> neq(sk2,nil) )),
                      neq(sk2,nil)),
                    rewrite(
                      ( neq(sk2,nil)
                    <=> neq(sk2,nil) )),
                    neq(sk2,nil)),
                  rewrite(
                    ( neq(sk2,nil)
                  <=> neq(sk4,nil) )),
                  neq(sk4,nil)),
                ( neq(sk4,nil)
              <=> $true )),
              ( ~ neq(sk4,nil)
            <=> ~ $true )),
            rewrite(
              ( ~ $true
            <=> $false )),
            ( ~ neq(sk4,nil)
          <=> $false )),
          ( ( ~ ssList(A)
            | ~ neq(sk4,nil)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
        <=> ( ~ ssList(A)
            | $false
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) ) )),
        rewrite(
          ( ( ~ ssList(A)
            | $false
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
        <=> ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) ) )),
        ( ( ~ ssList(A)
          | ~ neq(sk4,nil)
          | ~ ssList(B)
          | ~ neq(nil,sk4)
          | ( app(sk3,B) != A )
          | ( tl(sk4) != B )
          | ( sk4 != A ) )
      <=> ( ~ ssList(A)
          | ~ ssList(B)
          | ~ neq(nil,sk4)
          | ( app(sk3,B) != A )
          | ( tl(sk4) != B )
          | ( sk4 != A ) ) )),
    inference(bind,[status(th)],]) ).

tff(111,plain,
    ( ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ neq(sk4,nil)
        | ~ ssList(B)
        | ~ neq(nil,sk4)
        | ( app(sk3,B) != A )
        | ( tl(sk4) != B )
        | ( sk4 != A ) )
  <=> ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ ssList(B)
        | ~ neq(nil,sk4)
        | ( app(sk3,B) != A )
        | ( tl(sk4) != B )
        | ( sk4 != A ) ) ),
    inference(quant_intro,[status(thm)],[110]) ).

tff(112,plain,
    ^ [B: $i,A: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ~ neq(nil,sk2)
          <=> ~ neq(nil,sk4) )),
          rewrite(
            ( ( app(sk1,B) != A )
          <=> ( app(sk3,B) != A ) )),
          rewrite(
            ( ( tl(sk2) != B )
          <=> ( tl(sk4) != B ) )),
          rewrite(
            ( ( sk2 != A )
          <=> ( sk4 != A ) )),
          ( ( ~ ssList(A)
            | ~ neq(sk4,nil)
            | ~ ssList(B)
            | ~ neq(nil,sk2)
            | ( app(sk1,B) != A )
            | ( tl(sk2) != B )
            | ( sk2 != A ) )
        <=> ( ~ ssList(A)
            | ~ neq(sk4,nil)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) ) )),
        rewrite(
          ( ( ~ ssList(A)
            | ~ neq(sk4,nil)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
        <=> ( ~ ssList(A)
            | ~ neq(sk4,nil)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) ) )),
        ( ( ~ ssList(A)
          | ~ neq(sk4,nil)
          | ~ ssList(B)
          | ~ neq(nil,sk2)
          | ( app(sk1,B) != A )
          | ( tl(sk2) != B )
          | ( sk2 != A ) )
      <=> ( ~ ssList(A)
          | ~ neq(sk4,nil)
          | ~ ssList(B)
          | ~ neq(nil,sk4)
          | ( app(sk3,B) != A )
          | ( tl(sk4) != B )
          | ( sk4 != A ) ) )),
    inference(bind,[status(th)],]) ).

tff(113,plain,
    ( ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ neq(sk4,nil)
        | ~ ssList(B)
        | ~ neq(nil,sk2)
        | ( app(sk1,B) != A )
        | ( tl(sk2) != B )
        | ( sk2 != A ) )
  <=> ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ neq(sk4,nil)
        | ~ ssList(B)
        | ~ neq(nil,sk4)
        | ( app(sk3,B) != A )
        | ( tl(sk4) != B )
        | ( sk4 != A ) ) ),
    inference(quant_intro,[status(thm)],[112]) ).

tff(114,plain,
    ( ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ neq(sk4,nil)
        | ~ ssList(B)
        | ~ neq(nil,sk2)
        | ( app(sk1,B) != A )
        | ( tl(sk2) != B )
        | ( sk2 != A ) )
  <=> ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ neq(sk4,nil)
        | ~ ssList(B)
        | ~ neq(nil,sk2)
        | ( app(sk1,B) != A )
        | ( tl(sk2) != B )
        | ( sk2 != A ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(115,plain,
    ^ [B: $i,A: $i] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              trans(
                monotonicity(
                  trans(
                    monotonicity(
                      rewrite(
                        ( ( ~ ssList(A)
                          | ( sk2 != A )
                          | ~ ssList(B) )
                      <=> ( ~ ssList(A)
                          | ~ ssList(B)
                          | ( sk2 != A ) ) )),
                      ( ( ~ ssList(A)
                        | ( sk2 != A )
                        | ~ ssList(B)
                        | ( tl(sk2) != B ) )
                    <=> ( ~ ssList(A)
                        | ~ ssList(B)
                        | ( sk2 != A )
                        | ( tl(sk2) != B ) ) )),
                    rewrite(
                      ( ( ~ ssList(A)
                        | ~ ssList(B)
                        | ( sk2 != A )
                        | ( tl(sk2) != B ) )
                    <=> ( ~ ssList(A)
                        | ~ ssList(B)
                        | ( tl(sk2) != B )
                        | ( sk2 != A ) ) )),
                    ( ( ~ ssList(A)
                      | ( sk2 != A )
                      | ~ ssList(B)
                      | ( tl(sk2) != B ) )
                  <=> ( ~ ssList(A)
                      | ~ ssList(B)
                      | ( tl(sk2) != B )
                      | ( sk2 != A ) ) )),
                  ( ( ~ ssList(A)
                    | ( sk2 != A )
                    | ~ ssList(B)
                    | ( tl(sk2) != B )
                    | ( app(sk1,B) != A ) )
                <=> ( ~ ssList(A)
                    | ~ ssList(B)
                    | ( tl(sk2) != B )
                    | ( sk2 != A )
                    | ( app(sk1,B) != A ) ) )),
                rewrite(
                  ( ( ~ ssList(A)
                    | ~ ssList(B)
                    | ( tl(sk2) != B )
                    | ( sk2 != A )
                    | ( app(sk1,B) != A ) )
                <=> ( ~ ssList(A)
                    | ~ ssList(B)
                    | ( app(sk1,B) != A )
                    | ( tl(sk2) != B )
                    | ( sk2 != A ) ) )),
                ( ( ~ ssList(A)
                  | ( sk2 != A )
                  | ~ ssList(B)
                  | ( tl(sk2) != B )
                  | ( app(sk1,B) != A ) )
              <=> ( ~ ssList(A)
                  | ~ ssList(B)
                  | ( app(sk1,B) != A )
                  | ( tl(sk2) != B )
                  | ( sk2 != A ) ) )),
              ( ( ~ ssList(A)
                | ( sk2 != A )
                | ~ ssList(B)
                | ( tl(sk2) != B )
                | ( app(sk1,B) != A )
                | ~ neq(nil,sk2) )
            <=> ( ~ ssList(A)
                | ~ ssList(B)
                | ( app(sk1,B) != A )
                | ( tl(sk2) != B )
                | ( sk2 != A )
                | ~ neq(nil,sk2) ) )),
            rewrite(
              ( ( ~ ssList(A)
                | ~ ssList(B)
                | ( app(sk1,B) != A )
                | ( tl(sk2) != B )
                | ( sk2 != A )
                | ~ neq(nil,sk2) )
            <=> ( ~ ssList(A)
                | ~ ssList(B)
                | ~ neq(nil,sk2)
                | ( app(sk1,B) != A )
                | ( tl(sk2) != B )
                | ( sk2 != A ) ) )),
            ( ( ~ ssList(A)
              | ( sk2 != A )
              | ~ ssList(B)
              | ( tl(sk2) != B )
              | ( app(sk1,B) != A )
              | ~ neq(nil,sk2) )
          <=> ( ~ ssList(A)
              | ~ ssList(B)
              | ~ neq(nil,sk2)
              | ( app(sk1,B) != A )
              | ( tl(sk2) != B )
              | ( sk2 != A ) ) )),
          ( ( ~ ssList(A)
            | ( sk2 != A )
            | ~ ssList(B)
            | ( tl(sk2) != B )
            | ( app(sk1,B) != A )
            | ~ neq(nil,sk2)
            | ~ neq(sk4,nil) )
        <=> ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk2)
            | ( app(sk1,B) != A )
            | ( tl(sk2) != B )
            | ( sk2 != A )
            | ~ neq(sk4,nil) ) )),
        rewrite(
          ( ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk2)
            | ( app(sk1,B) != A )
            | ( tl(sk2) != B )
            | ( sk2 != A )
            | ~ neq(sk4,nil) )
        <=> ( ~ ssList(A)
            | ~ neq(sk4,nil)
            | ~ ssList(B)
            | ~ neq(nil,sk2)
            | ( app(sk1,B) != A )
            | ( tl(sk2) != B )
            | ( sk2 != A ) ) )),
        ( ( ~ ssList(A)
          | ( sk2 != A )
          | ~ ssList(B)
          | ( tl(sk2) != B )
          | ( app(sk1,B) != A )
          | ~ neq(nil,sk2)
          | ~ neq(sk4,nil) )
      <=> ( ~ ssList(A)
          | ~ neq(sk4,nil)
          | ~ ssList(B)
          | ~ neq(nil,sk2)
          | ( app(sk1,B) != A )
          | ( tl(sk2) != B )
          | ( sk2 != A ) ) )),
    inference(bind,[status(th)],]) ).

tff(116,plain,
    ( ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ( sk2 != A )
        | ~ ssList(B)
        | ( tl(sk2) != B )
        | ( app(sk1,B) != A )
        | ~ neq(nil,sk2)
        | ~ neq(sk4,nil) )
  <=> ! [B: $i,A: $i] :
        ( ~ ssList(A)
        | ~ neq(sk4,nil)
        | ~ ssList(B)
        | ~ neq(nil,sk2)
        | ( app(sk1,B) != A )
        | ( tl(sk2) != B )
        | ( sk2 != A ) ) ),
    inference(quant_intro,[status(thm)],[115]) ).

tff(117,axiom,
    ! [B: $i,A: $i] :
      ( ~ ssList(A)
      | ( sk2 != A )
      | ~ ssList(B)
      | ( tl(sk2) != B )
      | ( app(sk1,B) != A )
      | ~ neq(nil,sk2)
      | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',co1_14) ).

tff(118,plain,
    ! [B: $i,A: $i] :
      ( ~ ssList(A)
      | ~ neq(sk4,nil)
      | ~ ssList(B)
      | ~ neq(nil,sk2)
      | ( app(sk1,B) != A )
      | ( tl(sk2) != B )
      | ( sk2 != A ) ),
    inference(modus_ponens,[status(thm)],[117,116]) ).

tff(119,plain,
    ! [B: $i,A: $i] :
      ( ~ ssList(A)
      | ~ neq(sk4,nil)
      | ~ ssList(B)
      | ~ neq(nil,sk2)
      | ( app(sk1,B) != A )
      | ( tl(sk2) != B )
      | ( sk2 != A ) ),
    inference(modus_ponens,[status(thm)],[118,114]) ).

tff(120,plain,
    ! [B: $i,A: $i] :
      ( ~ ssList(A)
      | ~ neq(sk4,nil)
      | ~ ssList(B)
      | ~ neq(nil,sk4)
      | ( app(sk3,B) != A )
      | ( tl(sk4) != B )
      | ( sk4 != A ) ),
    inference(modus_ponens,[status(thm)],[119,113]) ).

tff(121,plain,
    ! [B: $i,A: $i] :
      ( ~ ssList(A)
      | ~ ssList(B)
      | ~ neq(nil,sk4)
      | ( app(sk3,B) != A )
      | ( tl(sk4) != B )
      | ( sk4 != A ) ),
    inference(modus_ponens,[status(thm)],[120,111]) ).

tff(122,plain,
    ! [B: $i,A: $i] :
      ( ~ ssList(A)
      | ~ ssList(B)
      | ~ neq(nil,sk4)
      | ( app(sk3,B) != A )
      | ( tl(sk4) != B )
      | ( sk4 != A ) ),
    inference(skolemize,[status(sab)],[121]) ).

tff(123,plain,
    ! [B: $i,A: $i] :
      ( ~ ssList(A)
      | ~ ssList(B)
      | ~ neq(nil,sk4)
      | ( app(sk3,B) != A )
      | ( tl(sk4) != B )
      | ( sk4 != A ) ),
    inference(modus_ponens,[status(thm)],[122,109]) ).

tff(124,plain,
    ( ( ~ ! [B: $i,A: $i] :
            ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
      | ~ neq(nil,sk4)
      | ~ ssList(sk6)
      | ~ ssList(sk4)
      | ( tl(sk4) != sk6 )
      | ( app(sk3,sk6) != sk4 ) )
  <=> ( ~ ! [B: $i,A: $i] :
            ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
      | ~ neq(nil,sk4)
      | ~ ssList(sk6)
      | ~ ssList(sk4)
      | ( tl(sk4) != sk6 )
      | ( app(sk3,sk6) != sk4 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(125,plain,
    ( ( ~ ssList(sk4)
      | ~ ssList(sk6)
      | ~ neq(nil,sk4)
      | ( app(sk3,sk6) != sk4 )
      | ( tl(sk4) != sk6 )
      | $false )
  <=> ( ~ neq(nil,sk4)
      | ~ ssList(sk6)
      | ~ ssList(sk4)
      | ( tl(sk4) != sk6 )
      | ( app(sk3,sk6) != sk4 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(126,plain,
    ( ( sk4 = sk4 )
  <=> $true ),
    inference(rewrite,[status(thm)],]) ).

tff(127,plain,
    ( ( sk4 != sk4 )
  <=> ~ $true ),
    inference(monotonicity,[status(thm)],[126]) ).

tff(128,plain,
    ( ( sk4 != sk4 )
  <=> $false ),
    inference(transitivity,[status(thm)],[127,38]) ).

tff(129,plain,
    ( ( ~ ssList(sk4)
      | ~ ssList(sk6)
      | ~ neq(nil,sk4)
      | ( app(sk3,sk6) != sk4 )
      | ( tl(sk4) != sk6 )
      | ( sk4 != sk4 ) )
  <=> ( ~ ssList(sk4)
      | ~ ssList(sk6)
      | ~ neq(nil,sk4)
      | ( app(sk3,sk6) != sk4 )
      | ( tl(sk4) != sk6 )
      | $false ) ),
    inference(monotonicity,[status(thm)],[128]) ).

tff(130,plain,
    ( ( ~ ssList(sk4)
      | ~ ssList(sk6)
      | ~ neq(nil,sk4)
      | ( app(sk3,sk6) != sk4 )
      | ( tl(sk4) != sk6 )
      | ( sk4 != sk4 ) )
  <=> ( ~ neq(nil,sk4)
      | ~ ssList(sk6)
      | ~ ssList(sk4)
      | ( tl(sk4) != sk6 )
      | ( app(sk3,sk6) != sk4 ) ) ),
    inference(transitivity,[status(thm)],[129,125]) ).

tff(131,plain,
    ( ( ~ ! [B: $i,A: $i] :
            ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
      | ~ ssList(sk4)
      | ~ ssList(sk6)
      | ~ neq(nil,sk4)
      | ( app(sk3,sk6) != sk4 )
      | ( tl(sk4) != sk6 )
      | ( sk4 != sk4 ) )
  <=> ( ~ ! [B: $i,A: $i] :
            ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
      | ~ neq(nil,sk4)
      | ~ ssList(sk6)
      | ~ ssList(sk4)
      | ( tl(sk4) != sk6 )
      | ( app(sk3,sk6) != sk4 ) ) ),
    inference(monotonicity,[status(thm)],[130]) ).

tff(132,plain,
    ( ( ~ ! [B: $i,A: $i] :
            ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
      | ~ ssList(sk4)
      | ~ ssList(sk6)
      | ~ neq(nil,sk4)
      | ( app(sk3,sk6) != sk4 )
      | ( tl(sk4) != sk6 )
      | ( sk4 != sk4 ) )
  <=> ( ~ ! [B: $i,A: $i] :
            ( ~ ssList(A)
            | ~ ssList(B)
            | ~ neq(nil,sk4)
            | ( app(sk3,B) != A )
            | ( tl(sk4) != B )
            | ( sk4 != A ) )
      | ~ neq(nil,sk4)
      | ~ ssList(sk6)
      | ~ ssList(sk4)
      | ( tl(sk4) != sk6 )
      | ( app(sk3,sk6) != sk4 ) ) ),
    inference(transitivity,[status(thm)],[131,124]) ).

tff(133,plain,
    ( ~ ! [B: $i,A: $i] :
          ( ~ ssList(A)
          | ~ ssList(B)
          | ~ neq(nil,sk4)
          | ( app(sk3,B) != A )
          | ( tl(sk4) != B )
          | ( sk4 != A ) )
    | ~ ssList(sk4)
    | ~ ssList(sk6)
    | ~ neq(nil,sk4)
    | ( app(sk3,sk6) != sk4 )
    | ( tl(sk4) != sk6 )
    | ( sk4 != sk4 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(134,plain,
    ( ~ ! [B: $i,A: $i] :
          ( ~ ssList(A)
          | ~ ssList(B)
          | ~ neq(nil,sk4)
          | ( app(sk3,B) != A )
          | ( tl(sk4) != B )
          | ( sk4 != A ) )
    | ~ neq(nil,sk4)
    | ~ ssList(sk6)
    | ~ ssList(sk4)
    | ( tl(sk4) != sk6 )
    | ( app(sk3,sk6) != sk4 ) ),
    inference(modus_ponens,[status(thm)],[133,132]) ).

tff(135,plain,
    ( ~ neq(nil,sk4)
    | ( tl(sk4) != sk6 ) ),
    inference(unit_resolution,[status(thm)],[134,15,123,47,103]) ).

tff(136,plain,
    ~ neq(nil,sk4),
    inference(unit_resolution,[status(thm)],[135,107]) ).

tff(137,plain,
    ^ [V: $i,U: $i] :
      refl(
        ( ( ~ ssList(U)
          | ~ ssList(V)
          | ( V = U )
          | neq(V,U) )
      <=> ( ~ ssList(U)
          | ~ ssList(V)
          | ( V = U )
          | neq(V,U) ) )),
    inference(bind,[status(th)],]) ).

tff(138,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( V = U )
        | neq(V,U) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( V = U )
        | neq(V,U) ) ),
    inference(quant_intro,[status(thm)],[137]) ).

tff(139,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( V = U )
        | neq(V,U) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( V = U )
        | neq(V,U) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(140,plain,
    ^ [V: $i,U: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ( ~ ssList(U)
              | ~ ssList(V)
              | neq(V,U) )
          <=> ( ~ ssList(U)
              | ~ ssList(V)
              | neq(V,U) ) )),
          ( ( ~ ssList(U)
            | ~ ssList(V)
            | neq(V,U)
            | ( V = U ) )
        <=> ( ~ ssList(U)
            | ~ ssList(V)
            | neq(V,U)
            | ( V = U ) ) )),
        rewrite(
          ( ( ~ ssList(U)
            | ~ ssList(V)
            | neq(V,U)
            | ( V = U ) )
        <=> ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) ) )),
        ( ( ~ ssList(U)
          | ~ ssList(V)
          | neq(V,U)
          | ( V = U ) )
      <=> ( ~ ssList(U)
          | ~ ssList(V)
          | ( V = U )
          | neq(V,U) ) )),
    inference(bind,[status(th)],]) ).

tff(141,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | neq(V,U)
        | ( V = U ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssList(U)
        | ~ ssList(V)
        | ( V = U )
        | neq(V,U) ) ),
    inference(quant_intro,[status(thm)],[140]) ).

tff(142,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | neq(V,U)
      | ( V = U ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SWC001-0.ax',clause100) ).

tff(143,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(modus_ponens,[status(thm)],[142,141]) ).

tff(144,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(modus_ponens,[status(thm)],[143,139]) ).

tff(145,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(skolemize,[status(sab)],[144]) ).

tff(146,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(modus_ponens,[status(thm)],[145,138]) ).

tff(147,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | neq(nil,sk4)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( nil = sk4 ) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | neq(nil,sk4)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( nil = sk4 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(148,plain,
    ( ( ~ ssList(sk4)
      | ~ ssList(nil)
      | ( nil = sk4 )
      | neq(nil,sk4) )
  <=> ( neq(nil,sk4)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( nil = sk4 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(149,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | ~ ssList(sk4)
      | ~ ssList(nil)
      | ( nil = sk4 )
      | neq(nil,sk4) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | neq(nil,sk4)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( nil = sk4 ) ) ),
    inference(monotonicity,[status(thm)],[148]) ).

tff(150,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | ~ ssList(sk4)
      | ~ ssList(nil)
      | ( nil = sk4 )
      | neq(nil,sk4) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | neq(nil,sk4)
      | ~ ssList(nil)
      | ~ ssList(sk4)
      | ( nil = sk4 ) ) ),
    inference(transitivity,[status(thm)],[149,147]) ).

tff(151,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( V = U )
          | neq(V,U) )
    | ~ ssList(sk4)
    | ~ ssList(nil)
    | ( nil = sk4 )
    | neq(nil,sk4) ),
    inference(quant_inst,[status(thm)],]) ).

tff(152,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( V = U )
          | neq(V,U) )
    | neq(nil,sk4)
    | ~ ssList(nil)
    | ~ ssList(sk4)
    | ( nil = sk4 ) ),
    inference(modus_ponens,[status(thm)],[151,150]) ).

tff(153,plain,
    $false,
    inference(unit_resolution,[status(thm)],[152,28,146,15,136,36]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.12/0.12  % Problem  : SWC014-1 : TPTP v8.1.0. Released v2.4.0.
% 0.12/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.13/0.34  % Computer : n001.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 300
% 0.13/0.34  % DateTime : Sat Sep  3 21:01:56 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 0.13/0.35  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.13/0.35  Usage: tptp [options] [-file:]file
% 0.13/0.35    -h, -?       prints this message.
% 0.13/0.35    -smt2        print SMT-LIB2 benchmark.
% 0.13/0.35    -m, -model   generate model.
% 0.13/0.35    -p, -proof   generate proof.
% 0.13/0.35    -c, -core    generate unsat core of named formulas.
% 0.13/0.35    -st, -statistics display statistics.
% 0.13/0.35    -t:timeout   set timeout (in second).
% 0.13/0.35    -smt2status  display status in smt2 format instead of SZS.
% 0.13/0.35    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.13/0.35    -<param>:<value> configuration parameter and value.
% 0.13/0.35    -o:<output-file> file to place output in.
% 0.55/0.63  % SZS status Unsatisfiable
% 0.55/0.63  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------