TSTP Solution File: SWC206-1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : SWC206-1 : TPTP v8.1.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n014.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 11:56:07 EDT 2022

% Result   : Unsatisfiable 0.20s 0.46s
% Output   : Proof 0.20s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   11
%            Number of leaves      :   50
% Syntax   : Number of formulae    :  115 (  26 unt;   9 typ;   0 def)
%            Number of atoms       :  494 ( 102 equ)
%            Maximal formula atoms :   16 (   4 avg)
%            Number of connectives :  694 ( 330   ~; 307   |;   0   &)
%                                         (  57 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   4 avg)
%            Maximal term depth    :    1 (   1 avg)
%            Number of FOOLs       :   24 (  24 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    5 (   3   >;   2   *;   0   +;   0  <<)
%            Number of predicates  :   10 (   7 usr;   2 prp; 0-3 aty)
%            Number of functors    :    6 (   6 usr;   6 con; 0-0 aty)
%            Number of variables   :   93 (  83   !;   0   ?;  93   :)

% Comments : 
%------------------------------------------------------------------------------
tff(sk5_type,type,
    sk5: $i ).

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

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

tff(sk4_type,type,
    sk4: $i ).

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

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

tff(segmentP_type,type,
    segmentP: ( $i * $i ) > $o ).

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

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

tff(1,plain,
    ( ( sk5 = nil )
  <=> ( nil = sk5 ) ),
    inference(commutativity,[status(thm)],]) ).

tff(2,plain,
    ( ( sk5 != nil )
  <=> ( nil != sk5 ) ),
    inference(monotonicity,[status(thm)],[1]) ).

tff(3,plain,
    ( ( neq(sk5,nil)
      | $false )
  <=> neq(sk5,nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(4,plain,
    ( ~ $true
  <=> $false ),
    inference(rewrite,[status(thm)],]) ).

tff(5,plain,
    ( neq(sk2,nil)
  <=> neq(sk4,nil) ),
    inference(rewrite,[status(thm)],]) ).

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

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

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

tff(9,plain,
    neq(sk4,nil),
    inference(modus_ponens,[status(thm)],[8,5]) ).

tff(10,plain,
    ( neq(sk4,nil)
  <=> $true ),
    inference(iff_true,[status(thm)],[9]) ).

tff(11,plain,
    ( ~ neq(sk4,nil)
  <=> ~ $true ),
    inference(monotonicity,[status(thm)],[10]) ).

tff(12,plain,
    ( ~ neq(sk4,nil)
  <=> $false ),
    inference(transitivity,[status(thm)],[11,4]) ).

tff(13,plain,
    ( ( neq(sk5,nil)
      | ~ neq(sk4,nil) )
  <=> ( neq(sk5,nil)
      | $false ) ),
    inference(monotonicity,[status(thm)],[12]) ).

tff(14,plain,
    ( ( neq(sk5,nil)
      | ~ neq(sk4,nil) )
  <=> neq(sk5,nil) ),
    inference(transitivity,[status(thm)],[13,3]) ).

tff(15,plain,
    ( ( neq(sk5,nil)
      | ~ neq(sk4,nil) )
  <=> ( neq(sk5,nil)
      | ~ neq(sk4,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(16,axiom,
    ( neq(sk5,nil)
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_11) ).

tff(17,plain,
    ( neq(sk5,nil)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[16,15]) ).

tff(18,plain,
    ( neq(sk5,nil)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[17,15]) ).

tff(19,plain,
    ( neq(sk5,nil)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[18,15]) ).

tff(20,plain,
    ( neq(sk5,nil)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[19,15]) ).

tff(21,plain,
    ( neq(sk5,nil)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[20,15]) ).

tff(22,plain,
    ( neq(sk5,nil)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[21,15]) ).

tff(23,plain,
    neq(sk5,nil),
    inference(modus_ponens,[status(thm)],[22,14]) ).

tff(24,plain,
    ( ( ssList(sk5)
      | $false )
  <=> ssList(sk5) ),
    inference(rewrite,[status(thm)],]) ).

tff(25,plain,
    ( ( ssList(sk5)
      | ~ neq(sk4,nil) )
  <=> ( ssList(sk5)
      | $false ) ),
    inference(monotonicity,[status(thm)],[12]) ).

tff(26,plain,
    ( ( ssList(sk5)
      | ~ neq(sk4,nil) )
  <=> ssList(sk5) ),
    inference(transitivity,[status(thm)],[25,24]) ).

tff(27,plain,
    ( ( ssList(sk5)
      | ~ neq(sk4,nil) )
  <=> ( ssList(sk5)
      | ~ neq(sk4,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(28,axiom,
    ( ssList(sk5)
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_10) ).

tff(29,plain,
    ( ssList(sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[28,27]) ).

tff(30,plain,
    ssList(sk5),
    inference(modus_ponens,[status(thm)],[29,26]) ).

tff(31,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(32,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)],[31]) ).

tff(33,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(34,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(35,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)],[34]) ).

tff(36,axiom,
    ! [V: $i,U: $i] :
      ( ( U != V )
      | ~ neq(U,V)
      | ~ ssList(V)
      | ~ ssList(U) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SWC001-0.ax',clause115) ).

tff(37,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( U != V )
      | ~ neq(U,V) ),
    inference(modus_ponens,[status(thm)],[36,35]) ).

tff(38,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( U != V )
      | ~ neq(U,V) ),
    inference(modus_ponens,[status(thm)],[37,33]) ).

tff(39,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( U != V )
      | ~ neq(U,V) ),
    inference(skolemize,[status(sab)],[38]) ).

tff(40,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( U != V )
      | ~ neq(U,V) ),
    inference(modus_ponens,[status(thm)],[39,32]) ).

tff(41,plain,
    ( ssList(nil)
  <=> ssList(nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(42,axiom,
    ssList(nil),
    file('/export/starexec/sandbox/benchmark/Axioms/SWC001-0.ax',clause8) ).

tff(43,plain,
    ssList(nil),
    inference(modus_ponens,[status(thm)],[42,41]) ).

tff(44,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(nil)
      | ~ ssList(sk5)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(nil)
      | ~ ssList(sk5)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(45,plain,
    ( ( ~ ssList(sk5)
      | ~ ssList(nil)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) )
  <=> ( ~ ssList(nil)
      | ~ ssList(sk5)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(46,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(sk5)
      | ~ ssList(nil)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(nil)
      | ~ ssList(sk5)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) ) ),
    inference(monotonicity,[status(thm)],[45]) ).

tff(47,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(sk5)
      | ~ ssList(nil)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( U != V )
            | ~ neq(U,V) )
      | ~ ssList(nil)
      | ~ ssList(sk5)
      | ( sk5 != nil )
      | ~ neq(sk5,nil) ) ),
    inference(transitivity,[status(thm)],[46,44]) ).

tff(48,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( U != V )
          | ~ neq(U,V) )
    | ~ ssList(sk5)
    | ~ ssList(nil)
    | ( sk5 != nil )
    | ~ neq(sk5,nil) ),
    inference(quant_inst,[status(thm)],]) ).

tff(49,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( U != V )
          | ~ neq(U,V) )
    | ~ ssList(nil)
    | ~ ssList(sk5)
    | ( sk5 != nil )
    | ~ neq(sk5,nil) ),
    inference(modus_ponens,[status(thm)],[48,47]) ).

tff(50,plain,
    sk5 != nil,
    inference(unit_resolution,[status(thm)],[49,43,40,30,23]) ).

tff(51,plain,
    nil != sk5,
    inference(modus_ponens,[status(thm)],[50,2]) ).

tff(52,plain,
    ( ~ neq(sk1,nil)
  <=> ~ neq(sk3,nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(53,plain,
    ( ~ neq(sk1,nil)
  <=> ~ neq(sk1,nil) ),
    inference(rewrite,[status(thm)],]) ).

tff(54,axiom,
    ~ neq(sk1,nil),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_8) ).

tff(55,plain,
    ~ neq(sk1,nil),
    inference(modus_ponens,[status(thm)],[54,53]) ).

tff(56,plain,
    ~ neq(sk3,nil),
    inference(modus_ponens,[status(thm)],[55,52]) ).

tff(57,plain,
    ( ssList(sk1)
  <=> ssList(sk3) ),
    inference(rewrite,[status(thm)],]) ).

tff(58,plain,
    ( ssList(sk1)
  <=> ssList(sk1) ),
    inference(rewrite,[status(thm)],]) ).

tff(59,axiom,
    ssList(sk1),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_1) ).

tff(60,plain,
    ssList(sk1),
    inference(modus_ponens,[status(thm)],[59,58]) ).

tff(61,plain,
    ssList(sk3),
    inference(modus_ponens,[status(thm)],[60,57]) ).

tff(62,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(63,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)],[62]) ).

tff(64,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(65,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(66,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)],[65]) ).

tff(67,axiom,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | neq(V,U)
      | ( V = U ) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SWC001-0.ax',clause100) ).

tff(68,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(modus_ponens,[status(thm)],[67,66]) ).

tff(69,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(modus_ponens,[status(thm)],[68,64]) ).

tff(70,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(skolemize,[status(sab)],[69]) ).

tff(71,plain,
    ! [V: $i,U: $i] :
      ( ~ ssList(U)
      | ~ ssList(V)
      | ( V = U )
      | neq(V,U) ),
    inference(modus_ponens,[status(thm)],[70,63]) ).

tff(72,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | ~ ssList(nil)
      | ~ ssList(sk3)
      | ( sk3 = nil )
      | neq(sk3,nil) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssList(U)
            | ~ ssList(V)
            | ( V = U )
            | neq(V,U) )
      | ~ ssList(nil)
      | ~ ssList(sk3)
      | ( sk3 = nil )
      | neq(sk3,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(73,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( V = U )
          | neq(V,U) )
    | ~ ssList(nil)
    | ~ ssList(sk3)
    | ( sk3 = nil )
    | neq(sk3,nil) ),
    inference(quant_inst,[status(thm)],]) ).

tff(74,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssList(U)
          | ~ ssList(V)
          | ( V = U )
          | neq(V,U) )
    | ~ ssList(nil)
    | ~ ssList(sk3)
    | ( sk3 = nil )
    | neq(sk3,nil) ),
    inference(modus_ponens,[status(thm)],[73,72]) ).

tff(75,plain,
    sk3 = nil,
    inference(unit_resolution,[status(thm)],[74,43,71,61,56]) ).

tff(76,plain,
    nil = sk3,
    inference(symmetry,[status(thm)],[75]) ).

tff(77,plain,
    ( segmentP(nil,sk5)
  <=> segmentP(sk3,sk5) ),
    inference(monotonicity,[status(thm)],[76]) ).

tff(78,plain,
    ( segmentP(sk3,sk5)
  <=> segmentP(nil,sk5) ),
    inference(symmetry,[status(thm)],[77]) ).

tff(79,plain,
    ( ( segmentP(sk3,sk5)
      | $false )
  <=> segmentP(sk3,sk5) ),
    inference(rewrite,[status(thm)],]) ).

tff(80,plain,
    ( ( segmentP(sk3,sk5)
      | ~ neq(sk4,nil) )
  <=> ( segmentP(sk3,sk5)
      | $false ) ),
    inference(monotonicity,[status(thm)],[12]) ).

tff(81,plain,
    ( ( segmentP(sk3,sk5)
      | ~ neq(sk4,nil) )
  <=> segmentP(sk3,sk5) ),
    inference(transitivity,[status(thm)],[80,79]) ).

tff(82,plain,
    ( ( segmentP(sk3,sk5)
      | ~ neq(sk4,nil) )
  <=> ( segmentP(sk3,sk5)
      | ~ neq(sk4,nil) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(83,axiom,
    ( segmentP(sk3,sk5)
    | ~ neq(sk4,nil) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_13) ).

tff(84,plain,
    ( segmentP(sk3,sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[83,82]) ).

tff(85,plain,
    ( segmentP(sk3,sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[84,82]) ).

tff(86,plain,
    ( segmentP(sk3,sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[85,82]) ).

tff(87,plain,
    ( segmentP(sk3,sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[86,82]) ).

tff(88,plain,
    ( segmentP(sk3,sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[87,82]) ).

tff(89,plain,
    ( segmentP(sk3,sk5)
    | ~ neq(sk4,nil) ),
    inference(modus_ponens,[status(thm)],[88,82]) ).

tff(90,plain,
    segmentP(sk3,sk5),
    inference(modus_ponens,[status(thm)],[89,81]) ).

tff(91,plain,
    segmentP(nil,sk5),
    inference(modus_ponens,[status(thm)],[90,78]) ).

tff(92,plain,
    ^ [U: $i] :
      refl(
        ( ( ~ ssList(U)
          | ( nil = U )
          | ~ segmentP(nil,U) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ~ segmentP(nil,U) ) )),
    inference(bind,[status(th)],]) ).

tff(93,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ segmentP(nil,U) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ segmentP(nil,U) ) ),
    inference(quant_intro,[status(thm)],[92]) ).

tff(94,plain,
    ( ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ segmentP(nil,U) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ segmentP(nil,U) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(95,plain,
    ^ [U: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ( ~ segmentP(nil,U)
              | ~ ssList(U) )
          <=> ( ~ ssList(U)
              | ~ segmentP(nil,U) ) )),
          ( ( ~ segmentP(nil,U)
            | ~ ssList(U)
            | ( nil = U ) )
        <=> ( ~ ssList(U)
            | ~ segmentP(nil,U)
            | ( nil = U ) ) )),
        rewrite(
          ( ( ~ ssList(U)
            | ~ segmentP(nil,U)
            | ( nil = U ) )
        <=> ( ~ ssList(U)
            | ( nil = U )
            | ~ segmentP(nil,U) ) )),
        ( ( ~ segmentP(nil,U)
          | ~ ssList(U)
          | ( nil = U ) )
      <=> ( ~ ssList(U)
          | ( nil = U )
          | ~ segmentP(nil,U) ) )),
    inference(bind,[status(th)],]) ).

tff(96,plain,
    ( ! [U: $i] :
        ( ~ segmentP(nil,U)
        | ~ ssList(U)
        | ( nil = U ) )
  <=> ! [U: $i] :
        ( ~ ssList(U)
        | ( nil = U )
        | ~ segmentP(nil,U) ) ),
    inference(quant_intro,[status(thm)],[95]) ).

tff(97,axiom,
    ! [U: $i] :
      ( ~ segmentP(nil,U)
      | ~ ssList(U)
      | ( nil = U ) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SWC001-0.ax',clause80) ).

tff(98,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ segmentP(nil,U) ),
    inference(modus_ponens,[status(thm)],[97,96]) ).

tff(99,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ segmentP(nil,U) ),
    inference(modus_ponens,[status(thm)],[98,94]) ).

tff(100,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ segmentP(nil,U) ),
    inference(skolemize,[status(sab)],[99]) ).

tff(101,plain,
    ! [U: $i] :
      ( ~ ssList(U)
      | ( nil = U )
      | ~ segmentP(nil,U) ),
    inference(modus_ponens,[status(thm)],[100,93]) ).

tff(102,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ segmentP(nil,U) )
      | ~ ssList(sk5)
      | ( nil = sk5 )
      | ~ segmentP(nil,sk5) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssList(U)
            | ( nil = U )
            | ~ segmentP(nil,U) )
      | ~ ssList(sk5)
      | ( nil = sk5 )
      | ~ segmentP(nil,sk5) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(103,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ~ segmentP(nil,U) )
    | ~ ssList(sk5)
    | ( nil = sk5 )
    | ~ segmentP(nil,sk5) ),
    inference(quant_inst,[status(thm)],]) ).

tff(104,plain,
    ( ~ ! [U: $i] :
          ( ~ ssList(U)
          | ( nil = U )
          | ~ segmentP(nil,U) )
    | ~ ssList(sk5)
    | ( nil = sk5 )
    | ~ segmentP(nil,sk5) ),
    inference(modus_ponens,[status(thm)],[103,102]) ).

tff(105,plain,
    ( ( nil = sk5 )
    | ~ segmentP(nil,sk5) ),
    inference(unit_resolution,[status(thm)],[104,101,30]) ).

tff(106,plain,
    $false,
    inference(unit_resolution,[status(thm)],[105,91,51]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : SWC206-1 : TPTP v8.1.0. Released v2.4.0.
% 0.03/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.13/0.34  % Computer : n014.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 22:38:00 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.13/0.34  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.13/0.34  Usage: tptp [options] [-file:]file
% 0.13/0.34    -h, -?       prints this message.
% 0.13/0.34    -smt2        print SMT-LIB2 benchmark.
% 0.13/0.34    -m, -model   generate model.
% 0.13/0.34    -p, -proof   generate proof.
% 0.13/0.34    -c, -core    generate unsat core of named formulas.
% 0.13/0.34    -st, -statistics display statistics.
% 0.13/0.34    -t:timeout   set timeout (in second).
% 0.13/0.34    -smt2status  display status in smt2 format instead of SZS.
% 0.13/0.34    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.13/0.34    -<param>:<value> configuration parameter and value.
% 0.13/0.34    -o:<output-file> file to place output in.
% 0.20/0.46  % SZS status Unsatisfiable
% 0.20/0.46  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------