TSTP Solution File: SWC153-1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : SWC153-1 : TPTP v8.1.0. Released v2.4.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n005.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 11:55:40 EDT 2022

% Result   : Unsatisfiable 10.10s 6.76s
% Output   : Proof 10.10s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   17
%            Number of leaves      :   72
% Syntax   : Number of formulae    :  158 (  38 unt;  14 typ;   0 def)
%            Number of atoms       : 2376 ( 247 equ)
%            Maximal formula atoms :   39 (  16 avg)
%            Number of connectives : 4149 (2073   ~;1940   |;   0   &)
%                                         ( 136 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   20 (   8 avg)
%            Maximal term depth    :    6 (   2 avg)
%            Number of FOOLs       :  156 ( 156 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   10 (   6   >;   4   *;   0   +;   0  <<)
%            Number of predicates  :   11 (   8 usr;   2 prp; 0-3 aty)
%            Number of functors    :   10 (  10 usr;   8 con; 0-2 aty)
%            Number of variables   :  480 ( 424   !;   0   ?; 480   :)

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

tff(sk9_type,type,
    sk9: $i ).

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

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

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

tff(sk8_type,type,
    sk8: $i ).

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

tff(sk7_type,type,
    sk7: $i ).

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

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

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

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

tff(sk10_type,type,
    sk10: $i ).

tff(memberP_type,type,
    memberP: ( $i * $i ) > $o ).

tff(1,plain,
    ( leq(sk6,sk5)
  <=> leq(sk6,sk5) ),
    inference(rewrite,[status(thm)],]) ).

tff(2,axiom,
    leq(sk6,sk5),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_16) ).

tff(3,plain,
    leq(sk6,sk5),
    inference(modus_ponens,[status(thm)],[2,1]) ).

tff(4,plain,
    ( ssList(sk9)
  <=> ssList(sk9) ),
    inference(rewrite,[status(thm)],]) ).

tff(5,axiom,
    ssList(sk9),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_14) ).

tff(6,plain,
    ssList(sk9),
    inference(modus_ponens,[status(thm)],[5,4]) ).

tff(7,plain,
    ( ssList(sk8)
  <=> ssList(sk8) ),
    inference(rewrite,[status(thm)],]) ).

tff(8,axiom,
    ssList(sk8),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_13) ).

tff(9,plain,
    ssList(sk8),
    inference(modus_ponens,[status(thm)],[8,7]) ).

tff(10,plain,
    ( ssList(sk7)
  <=> ssList(sk7) ),
    inference(rewrite,[status(thm)],]) ).

tff(11,axiom,
    ssList(sk7),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_12) ).

tff(12,plain,
    ssList(sk7),
    inference(modus_ponens,[status(thm)],[11,10]) ).

tff(13,plain,
    ( ssItem(sk6)
  <=> ssItem(sk6) ),
    inference(rewrite,[status(thm)],]) ).

tff(14,axiom,
    ssItem(sk6),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_11) ).

tff(15,plain,
    ssItem(sk6),
    inference(modus_ponens,[status(thm)],[14,13]) ).

tff(16,plain,
    ( ssItem(sk5)
  <=> ssItem(sk5) ),
    inference(rewrite,[status(thm)],]) ).

tff(17,axiom,
    ssItem(sk5),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_10) ).

tff(18,plain,
    ssItem(sk5),
    inference(modus_ponens,[status(thm)],[17,16]) ).

tff(19,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,C: $i] :
      refl(
        ( ( ~ ssList(C)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ ssItem(B)
          | leq(A,B)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      <=> ( ~ ssList(C)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ ssItem(B)
          | leq(A,B)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
    inference(bind,[status(th)],]) ).

tff(20,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ ssItem(B)
        | leq(A,B)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ ssItem(B)
        | leq(A,B)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(quant_intro,[status(thm)],[19]) ).

tff(21,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,C: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          <=> ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )),
          ( ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
        <=> ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
        rewrite(
          ( ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
        <=> ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
        ( ( ~ ssList(C)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ ssItem(B)
          | leq(A,B)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
      <=> ( ~ ssList(C)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ ssItem(B)
          | leq(A,B)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
    inference(bind,[status(th)],]) ).

tff(22,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ ssItem(B)
        | leq(A,B)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ ssItem(B)
        | leq(A,B)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(quant_intro,[status(thm)],[21]) ).

tff(23,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ ssItem(B)
        | leq(A,B)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ ssItem(B)
        | leq(A,B)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(24,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,C: $i] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              trans(
                monotonicity(
                  trans(
                    monotonicity(
                      trans(
                        monotonicity(
                          rewrite(
                            ( ( ~ ssItem(A)
                              | ~ ssItem(B)
                              | ~ ssList(C) )
                          <=> ( ~ ssList(C)
                              | ~ ssItem(A)
                              | ~ ssItem(B) ) )),
                          ( ( ~ ssItem(A)
                            | ~ ssItem(B)
                            | ~ ssList(C)
                            | ~ ssList(D) )
                        <=> ( ~ ssList(C)
                            | ~ ssItem(A)
                            | ~ ssItem(B)
                            | ~ ssList(D) ) )),
                        rewrite(
                          ( ( ~ ssList(C)
                            | ~ ssItem(A)
                            | ~ ssItem(B)
                            | ~ ssList(D) )
                        <=> ( ~ ssList(C)
                            | ~ ssItem(A)
                            | ~ ssList(D)
                            | ~ ssItem(B) ) )),
                        ( ( ~ ssItem(A)
                          | ~ ssItem(B)
                          | ~ ssList(C)
                          | ~ ssList(D) )
                      <=> ( ~ ssList(C)
                          | ~ ssItem(A)
                          | ~ ssList(D)
                          | ~ ssItem(B) ) )),
                      ( ( ~ ssItem(A)
                        | ~ ssItem(B)
                        | ~ ssList(C)
                        | ~ ssList(D)
                        | ~ ssList(E) )
                    <=> ( ~ ssList(C)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ~ ssItem(B)
                        | ~ ssList(E) ) )),
                    rewrite(
                      ( ( ~ ssList(C)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ~ ssItem(B)
                        | ~ ssList(E) )
                    <=> ( ~ ssList(C)
                        | ~ ssList(E)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ~ ssItem(B) ) )),
                    ( ( ~ ssItem(A)
                      | ~ ssItem(B)
                      | ~ ssList(C)
                      | ~ ssList(D)
                      | ~ ssList(E) )
                  <=> ( ~ ssList(C)
                      | ~ ssList(E)
                      | ~ ssItem(A)
                      | ~ ssList(D)
                      | ~ ssItem(B) ) )),
                  ( ( ~ ssItem(A)
                    | ~ ssItem(B)
                    | ~ ssList(C)
                    | ~ ssList(D)
                    | ~ ssList(E)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                <=> ( ~ ssList(C)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ ssItem(B)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
                rewrite(
                  ( ( ~ ssList(C)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ ssItem(B)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                <=> ( ~ ssList(C)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ ssItem(B)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
                ( ( ~ ssItem(A)
                  | ~ ssItem(B)
                  | ~ ssList(C)
                  | ~ ssList(D)
                  | ~ ssList(E)
                  | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
              <=> ( ~ ssList(C)
                  | ~ ssList(E)
                  | ~ ssItem(A)
                  | ~ ssList(D)
                  | ~ ssItem(B)
                  | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
              ( ( ~ ssItem(A)
                | ~ ssItem(B)
                | ~ ssList(C)
                | ~ ssList(D)
                | ~ ssList(E)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ leq(B,A) )
            <=> ( ~ ssList(C)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ ssItem(B)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ leq(B,A) ) )),
            rewrite(
              ( ( ~ ssList(C)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ ssItem(B)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ leq(B,A) )
            <=> ( ~ ssList(C)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ ssItem(B)
                | ~ leq(B,A)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
            ( ( ~ ssItem(A)
              | ~ ssItem(B)
              | ~ ssList(C)
              | ~ ssList(D)
              | ~ ssList(E)
              | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
              | ~ leq(B,A) )
          <=> ( ~ ssList(C)
              | ~ ssList(E)
              | ~ ssItem(A)
              | ~ ssList(D)
              | ~ ssItem(B)
              | ~ leq(B,A)
              | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
          ( ( ~ ssItem(A)
            | ~ ssItem(B)
            | ~ ssList(C)
            | ~ ssList(D)
            | ~ ssList(E)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ leq(B,A)
            | leq(A,B) )
        <=> ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | leq(A,B) ) )),
        rewrite(
          ( ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | leq(A,B) )
        <=> ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
        ( ( ~ ssItem(A)
          | ~ ssItem(B)
          | ~ ssList(C)
          | ~ ssList(D)
          | ~ ssList(E)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          | ~ leq(B,A)
          | leq(A,B) )
      <=> ( ~ ssList(C)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ ssItem(B)
          | leq(A,B)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
    inference(bind,[status(th)],]) ).

tff(25,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssItem(B)
        | ~ ssList(C)
        | ~ ssList(D)
        | ~ ssList(E)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ leq(B,A)
        | leq(A,B) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ ssItem(B)
        | leq(A,B)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) ),
    inference(quant_intro,[status(thm)],[24]) ).

tff(26,axiom,
    ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssItem(B)
      | ~ ssList(C)
      | ~ ssList(D)
      | ~ ssList(E)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
      | ~ leq(B,A)
      | leq(A,B) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_7) ).

tff(27,plain,
    ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ ssItem(B)
      | leq(A,B)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ),
    inference(modus_ponens,[status(thm)],[26,25]) ).

tff(28,plain,
    ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ ssItem(B)
      | leq(A,B)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ),
    inference(modus_ponens,[status(thm)],[27,23]) ).

tff(29,plain,
    ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ ssItem(B)
      | leq(A,B)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[28,22]) ).

tff(30,plain,
    ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ ssItem(B)
      | leq(A,B)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(skolemize,[status(sab)],[29]) ).

tff(31,plain,
    ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ ssItem(B)
      | leq(A,B)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[30,20]) ).

tff(32,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk6)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ~ leq(sk6,sk5) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk6)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ~ leq(sk6,sk5) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(33,plain,
    ( ( ~ ssList(sk7)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ ssItem(sk6)
      | leq(sk5,sk6)
      | ~ leq(sk6,sk5)
      | $false )
  <=> ( leq(sk5,sk6)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ~ leq(sk6,sk5) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(34,plain,
    ( ~ $true
  <=> $false ),
    inference(rewrite,[status(thm)],]) ).

tff(35,plain,
    ( ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) = app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) )
  <=> $true ),
    inference(rewrite,[status(thm)],]) ).

tff(36,plain,
    ( ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) )
  <=> ~ $true ),
    inference(monotonicity,[status(thm)],[35]) ).

tff(37,plain,
    ( ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) )
  <=> $false ),
    inference(transitivity,[status(thm)],[36,34]) ).

tff(38,plain,
    ( ( ~ ssList(sk7)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ ssItem(sk6)
      | leq(sk5,sk6)
      | ~ leq(sk6,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ssList(sk7)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ ssItem(sk6)
      | leq(sk5,sk6)
      | ~ leq(sk6,sk5)
      | $false ) ),
    inference(monotonicity,[status(thm)],[37]) ).

tff(39,plain,
    ( ( ~ ssList(sk7)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ ssItem(sk6)
      | leq(sk5,sk6)
      | ~ leq(sk6,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( leq(sk5,sk6)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ~ leq(sk6,sk5) ) ),
    inference(transitivity,[status(thm)],[38,33]) ).

tff(40,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ ssItem(sk6)
      | leq(sk5,sk6)
      | ~ leq(sk6,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk6)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ~ leq(sk6,sk5) ) ),
    inference(monotonicity,[status(thm)],[39]) ).

tff(41,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ ssItem(sk6)
      | leq(sk5,sk6)
      | ~ leq(sk6,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ ssItem(B)
            | leq(A,B)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk6)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ~ leq(sk6,sk5) ) ),
    inference(transitivity,[status(thm)],[40,32]) ).

tff(42,plain,
    ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ ssItem(B)
          | leq(A,B)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
    | ~ ssList(sk7)
    | ~ ssList(sk9)
    | ~ ssItem(sk5)
    | ~ ssList(sk8)
    | ~ ssItem(sk6)
    | leq(sk5,sk6)
    | ~ leq(sk6,sk5)
    | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(43,plain,
    ( ~ ! [B: $i,D: $i,A: $i,E: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ ssItem(B)
          | leq(A,B)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
    | leq(sk5,sk6)
    | ~ ssList(sk7)
    | ~ ssList(sk8)
    | ~ ssList(sk9)
    | ~ ssItem(sk5)
    | ~ ssItem(sk6)
    | ~ leq(sk6,sk5) ),
    inference(modus_ponens,[status(thm)],[42,41]) ).

tff(44,plain,
    leq(sk5,sk6),
    inference(unit_resolution,[status(thm)],[43,31,18,15,12,9,6,3]) ).

tff(45,plain,
    ^ [V: $i,U: $i] :
      refl(
        ( ( ~ ssItem(U)
          | ( V = U )
          | ~ ssItem(V)
          | ~ leq(U,V)
          | ~ leq(V,U) )
      <=> ( ~ ssItem(U)
          | ( V = U )
          | ~ ssItem(V)
          | ~ leq(U,V)
          | ~ leq(V,U) ) )),
    inference(bind,[status(th)],]) ).

tff(46,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ( V = U )
        | ~ ssItem(V)
        | ~ leq(U,V)
        | ~ leq(V,U) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ( V = U )
        | ~ ssItem(V)
        | ~ leq(U,V)
        | ~ leq(V,U) ) ),
    inference(quant_intro,[status(thm)],[45]) ).

tff(47,plain,
    ( ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ( V = U )
        | ~ ssItem(V)
        | ~ leq(U,V)
        | ~ leq(V,U) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ( V = U )
        | ~ ssItem(V)
        | ~ leq(U,V)
        | ~ leq(V,U) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(48,plain,
    ^ [V: $i,U: $i] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              rewrite(
                ( ( ~ leq(U,V)
                  | ~ leq(V,U)
                  | ~ ssItem(U) )
              <=> ( ~ ssItem(U)
                  | ~ leq(U,V)
                  | ~ leq(V,U) ) )),
              ( ( ~ leq(U,V)
                | ~ leq(V,U)
                | ~ ssItem(U)
                | ~ ssItem(V) )
            <=> ( ~ ssItem(U)
                | ~ leq(U,V)
                | ~ leq(V,U)
                | ~ ssItem(V) ) )),
            rewrite(
              ( ( ~ ssItem(U)
                | ~ leq(U,V)
                | ~ leq(V,U)
                | ~ ssItem(V) )
            <=> ( ~ ssItem(U)
                | ~ ssItem(V)
                | ~ leq(U,V)
                | ~ leq(V,U) ) )),
            ( ( ~ leq(U,V)
              | ~ leq(V,U)
              | ~ ssItem(U)
              | ~ ssItem(V) )
          <=> ( ~ ssItem(U)
              | ~ ssItem(V)
              | ~ leq(U,V)
              | ~ leq(V,U) ) )),
          ( ( ~ leq(U,V)
            | ~ leq(V,U)
            | ~ ssItem(U)
            | ~ ssItem(V)
            | ( V = U ) )
        <=> ( ~ ssItem(U)
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U)
            | ( V = U ) ) )),
        rewrite(
          ( ( ~ ssItem(U)
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U)
            | ( V = U ) )
        <=> ( ~ ssItem(U)
            | ( V = U )
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U) ) )),
        ( ( ~ leq(U,V)
          | ~ leq(V,U)
          | ~ ssItem(U)
          | ~ ssItem(V)
          | ( V = U ) )
      <=> ( ~ ssItem(U)
          | ( V = U )
          | ~ ssItem(V)
          | ~ leq(U,V)
          | ~ leq(V,U) ) )),
    inference(bind,[status(th)],]) ).

tff(49,plain,
    ( ! [V: $i,U: $i] :
        ( ~ leq(U,V)
        | ~ leq(V,U)
        | ~ ssItem(U)
        | ~ ssItem(V)
        | ( V = U ) )
  <=> ! [V: $i,U: $i] :
        ( ~ ssItem(U)
        | ( V = U )
        | ~ ssItem(V)
        | ~ leq(U,V)
        | ~ leq(V,U) ) ),
    inference(quant_intro,[status(thm)],[48]) ).

tff(50,axiom,
    ! [V: $i,U: $i] :
      ( ~ leq(U,V)
      | ~ leq(V,U)
      | ~ ssItem(U)
      | ~ ssItem(V)
      | ( V = U ) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SWC001-0.ax',clause130) ).

tff(51,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ( V = U )
      | ~ ssItem(V)
      | ~ leq(U,V)
      | ~ leq(V,U) ),
    inference(modus_ponens,[status(thm)],[50,49]) ).

tff(52,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ( V = U )
      | ~ ssItem(V)
      | ~ leq(U,V)
      | ~ leq(V,U) ),
    inference(modus_ponens,[status(thm)],[51,47]) ).

tff(53,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ( V = U )
      | ~ ssItem(V)
      | ~ leq(U,V)
      | ~ leq(V,U) ),
    inference(skolemize,[status(sab)],[52]) ).

tff(54,plain,
    ! [V: $i,U: $i] :
      ( ~ ssItem(U)
      | ( V = U )
      | ~ ssItem(V)
      | ~ leq(U,V)
      | ~ leq(V,U) ),
    inference(modus_ponens,[status(thm)],[53,46]) ).

tff(55,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ( V = U )
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U) )
      | ~ leq(sk5,sk6)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ( sk6 = sk5 )
      | ~ leq(sk6,sk5) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ( V = U )
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U) )
      | ~ leq(sk5,sk6)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ( sk6 = sk5 )
      | ~ leq(sk6,sk5) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(56,plain,
    ( ( ~ ssItem(sk5)
      | ( sk6 = sk5 )
      | ~ ssItem(sk6)
      | ~ leq(sk5,sk6)
      | ~ leq(sk6,sk5) )
  <=> ( ~ leq(sk5,sk6)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ( sk6 = sk5 )
      | ~ leq(sk6,sk5) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(57,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ( V = U )
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U) )
      | ~ ssItem(sk5)
      | ( sk6 = sk5 )
      | ~ ssItem(sk6)
      | ~ leq(sk5,sk6)
      | ~ leq(sk6,sk5) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ( V = U )
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U) )
      | ~ leq(sk5,sk6)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ( sk6 = sk5 )
      | ~ leq(sk6,sk5) ) ),
    inference(monotonicity,[status(thm)],[56]) ).

tff(58,plain,
    ( ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ( V = U )
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U) )
      | ~ ssItem(sk5)
      | ( sk6 = sk5 )
      | ~ ssItem(sk6)
      | ~ leq(sk5,sk6)
      | ~ leq(sk6,sk5) )
  <=> ( ~ ! [V: $i,U: $i] :
            ( ~ ssItem(U)
            | ( V = U )
            | ~ ssItem(V)
            | ~ leq(U,V)
            | ~ leq(V,U) )
      | ~ leq(sk5,sk6)
      | ~ ssItem(sk5)
      | ~ ssItem(sk6)
      | ( sk6 = sk5 )
      | ~ leq(sk6,sk5) ) ),
    inference(transitivity,[status(thm)],[57,55]) ).

tff(59,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ( V = U )
          | ~ ssItem(V)
          | ~ leq(U,V)
          | ~ leq(V,U) )
    | ~ ssItem(sk5)
    | ( sk6 = sk5 )
    | ~ ssItem(sk6)
    | ~ leq(sk5,sk6)
    | ~ leq(sk6,sk5) ),
    inference(quant_inst,[status(thm)],]) ).

tff(60,plain,
    ( ~ ! [V: $i,U: $i] :
          ( ~ ssItem(U)
          | ( V = U )
          | ~ ssItem(V)
          | ~ leq(U,V)
          | ~ leq(V,U) )
    | ~ leq(sk5,sk6)
    | ~ ssItem(sk5)
    | ~ ssItem(sk6)
    | ( sk6 = sk5 )
    | ~ leq(sk6,sk5) ),
    inference(modus_ponens,[status(thm)],[59,58]) ).

tff(61,plain,
    ( ~ leq(sk5,sk6)
    | ( sk6 = sk5 ) ),
    inference(unit_resolution,[status(thm)],[60,54,18,15,3]) ).

tff(62,plain,
    sk6 = sk5,
    inference(unit_resolution,[status(thm)],[61,44]) ).

tff(63,plain,
    cons(sk6,nil) = cons(sk5,nil),
    inference(monotonicity,[status(thm)],[62]) ).

tff(64,plain,
    cons(sk5,nil) = cons(sk6,nil),
    inference(symmetry,[status(thm)],[63]) ).

tff(65,plain,
    app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)) = app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),
    inference(monotonicity,[status(thm)],[64]) ).

tff(66,plain,
    app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) = app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9),
    inference(monotonicity,[status(thm)],[65]) ).

tff(67,plain,
    ^ [U: $i] :
      refl(
        ( ( ~ ssItem(U)
          | leq(U,U) )
      <=> ( ~ ssItem(U)
          | leq(U,U) ) )),
    inference(bind,[status(th)],]) ).

tff(68,plain,
    ( ! [U: $i] :
        ( ~ ssItem(U)
        | leq(U,U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | leq(U,U) ) ),
    inference(quant_intro,[status(thm)],[67]) ).

tff(69,plain,
    ( ! [U: $i] :
        ( ~ ssItem(U)
        | leq(U,U) )
  <=> ! [U: $i] :
        ( ~ ssItem(U)
        | leq(U,U) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(70,axiom,
    ! [U: $i] :
      ( ~ ssItem(U)
      | leq(U,U) ),
    file('/export/starexec/sandbox/benchmark/Axioms/SWC001-0.ax',clause62) ).

tff(71,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | leq(U,U) ),
    inference(modus_ponens,[status(thm)],[70,69]) ).

tff(72,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | leq(U,U) ),
    inference(skolemize,[status(sab)],[71]) ).

tff(73,plain,
    ! [U: $i] :
      ( ~ ssItem(U)
      | leq(U,U) ),
    inference(modus_ponens,[status(thm)],[72,68]) ).

tff(74,plain,
    ( ( ~ ! [U: $i] :
            ( ~ ssItem(U)
            | leq(U,U) )
      | ~ ssItem(sk5)
      | leq(sk5,sk5) )
  <=> ( ~ ! [U: $i] :
            ( ~ ssItem(U)
            | leq(U,U) )
      | ~ ssItem(sk5)
      | leq(sk5,sk5) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(75,plain,
    ( ~ ! [U: $i] :
          ( ~ ssItem(U)
          | leq(U,U) )
    | ~ ssItem(sk5)
    | leq(sk5,sk5) ),
    inference(quant_inst,[status(thm)],]) ).

tff(76,plain,
    ( ~ ! [U: $i] :
          ( ~ ssItem(U)
          | leq(U,U) )
    | ~ ssItem(sk5)
    | leq(sk5,sk5) ),
    inference(modus_ponens,[status(thm)],[75,74]) ).

tff(77,plain,
    leq(sk5,sk5),
    inference(unit_resolution,[status(thm)],[76,73,18]) ).

tff(78,plain,
    sk5 = sk6,
    inference(symmetry,[status(thm)],[62]) ).

tff(79,plain,
    ( leq(sk10,sk5)
  <=> leq(sk10,sk6) ),
    inference(monotonicity,[status(thm)],[78]) ).

tff(80,plain,
    ( ( ~ leq(sk5,sk6)
      | memberP(sk8,sk10) )
  <=> ( ~ leq(sk5,sk6)
      | memberP(sk8,sk10) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(81,plain,
    ( ( memberP(sk8,sk10)
      | ~ leq(sk5,sk6) )
  <=> ( ~ leq(sk5,sk6)
      | memberP(sk8,sk10) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(82,axiom,
    ( memberP(sk8,sk10)
    | ~ leq(sk5,sk6) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_18) ).

tff(83,plain,
    ( ~ leq(sk5,sk6)
    | memberP(sk8,sk10) ),
    inference(modus_ponens,[status(thm)],[82,81]) ).

tff(84,plain,
    ( ~ leq(sk5,sk6)
    | memberP(sk8,sk10) ),
    inference(modus_ponens,[status(thm)],[83,80]) ).

tff(85,plain,
    memberP(sk8,sk10),
    inference(unit_resolution,[status(thm)],[84,44]) ).

tff(86,plain,
    ( ( ssItem(sk10)
      | ~ leq(sk5,sk6) )
  <=> ( ssItem(sk10)
      | ~ leq(sk5,sk6) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(87,axiom,
    ( ssItem(sk10)
    | ~ leq(sk5,sk6) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_17) ).

tff(88,plain,
    ( ssItem(sk10)
    | ~ leq(sk5,sk6) ),
    inference(modus_ponens,[status(thm)],[87,86]) ).

tff(89,plain,
    ssItem(sk10),
    inference(unit_resolution,[status(thm)],[88,44]) ).

tff(90,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      refl(
        ( ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | leq(F,B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      <=> ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | leq(F,B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
    inference(bind,[status(th)],]) ).

tff(91,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ~ ssItem(B)
        | leq(F,B)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ~ ssItem(B)
        | leq(F,B)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(quant_intro,[status(thm)],[90]) ).

tff(92,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          <=> ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )),
          ( ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B)
            | leq(F,B) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) )
            | ~ ssItem(B)
            | leq(F,B) ) )),
        rewrite(
          ( ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) )
            | ~ ssItem(B)
            | leq(F,B) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | leq(F,B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
        ( ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          | ~ ssItem(B)
          | leq(F,B) )
      <=> ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | leq(F,B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
    inference(bind,[status(th)],]) ).

tff(93,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B)
        | leq(F,B) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ~ ssItem(B)
        | leq(F,B)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(quant_intro,[status(thm)],[92]) ).

tff(94,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B)
        | leq(F,B) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B)
        | leq(F,B) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(95,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              trans(
                monotonicity(
                  trans(
                    monotonicity(
                      trans(
                        monotonicity(
                          trans(
                            monotonicity(
                              trans(
                                monotonicity(
                                  rewrite(
                                    ( ( ~ ssItem(A)
                                      | ~ ssItem(B)
                                      | ~ ssList(C) )
                                  <=> ( ~ ssList(C)
                                      | ~ ssItem(A)
                                      | ~ ssItem(B) ) )),
                                  ( ( ~ ssItem(A)
                                    | ~ ssItem(B)
                                    | ~ ssList(C)
                                    | ~ ssList(D) )
                                <=> ( ~ ssList(C)
                                    | ~ ssItem(A)
                                    | ~ ssItem(B)
                                    | ~ ssList(D) ) )),
                                rewrite(
                                  ( ( ~ ssList(C)
                                    | ~ ssItem(A)
                                    | ~ ssItem(B)
                                    | ~ ssList(D) )
                                <=> ( ~ ssList(C)
                                    | ~ ssItem(A)
                                    | ~ ssList(D)
                                    | ~ ssItem(B) ) )),
                                ( ( ~ ssItem(A)
                                  | ~ ssItem(B)
                                  | ~ ssList(C)
                                  | ~ ssList(D) )
                              <=> ( ~ ssList(C)
                                  | ~ ssItem(A)
                                  | ~ ssList(D)
                                  | ~ ssItem(B) ) )),
                              ( ( ~ ssItem(A)
                                | ~ ssItem(B)
                                | ~ ssList(C)
                                | ~ ssList(D)
                                | ~ ssList(E) )
                            <=> ( ~ ssList(C)
                                | ~ ssItem(A)
                                | ~ ssList(D)
                                | ~ ssItem(B)
                                | ~ ssList(E) ) )),
                            rewrite(
                              ( ( ~ ssList(C)
                                | ~ ssItem(A)
                                | ~ ssList(D)
                                | ~ ssItem(B)
                                | ~ ssList(E) )
                            <=> ( ~ ssList(C)
                                | ~ ssList(E)
                                | ~ ssItem(A)
                                | ~ ssList(D)
                                | ~ ssItem(B) ) )),
                            ( ( ~ ssItem(A)
                              | ~ ssItem(B)
                              | ~ ssList(C)
                              | ~ ssList(D)
                              | ~ ssList(E) )
                          <=> ( ~ ssList(C)
                              | ~ ssList(E)
                              | ~ ssItem(A)
                              | ~ ssList(D)
                              | ~ ssItem(B) ) )),
                          ( ( ~ ssItem(A)
                            | ~ ssItem(B)
                            | ~ ssList(C)
                            | ~ ssList(D)
                            | ~ ssList(E)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                        <=> ( ~ ssList(C)
                            | ~ ssList(E)
                            | ~ ssItem(A)
                            | ~ ssList(D)
                            | ~ ssItem(B)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
                        rewrite(
                          ( ( ~ ssList(C)
                            | ~ ssList(E)
                            | ~ ssItem(A)
                            | ~ ssList(D)
                            | ~ ssItem(B)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                        <=> ( ~ ssList(C)
                            | ~ ssList(E)
                            | ~ ssItem(A)
                            | ~ ssList(D)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                            | ~ ssItem(B) ) )),
                        ( ( ~ ssItem(A)
                          | ~ ssItem(B)
                          | ~ ssList(C)
                          | ~ ssList(D)
                          | ~ ssList(E)
                          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                      <=> ( ~ ssList(C)
                          | ~ ssList(E)
                          | ~ ssItem(A)
                          | ~ ssList(D)
                          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                          | ~ ssItem(B) ) )),
                      ( ( ~ ssItem(A)
                        | ~ ssItem(B)
                        | ~ ssList(C)
                        | ~ ssList(D)
                        | ~ ssList(E)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ leq(B,A) )
                    <=> ( ~ ssList(C)
                        | ~ ssList(E)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ ssItem(B)
                        | ~ leq(B,A) ) )),
                    rewrite(
                      ( ( ~ ssList(C)
                        | ~ ssList(E)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ ssItem(B)
                        | ~ leq(B,A) )
                    <=> ( ~ ssList(C)
                        | ~ ssList(E)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ~ leq(B,A)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ ssItem(B) ) )),
                    ( ( ~ ssItem(A)
                      | ~ ssItem(B)
                      | ~ ssList(C)
                      | ~ ssList(D)
                      | ~ ssList(E)
                      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                      | ~ leq(B,A) )
                  <=> ( ~ ssList(C)
                      | ~ ssList(E)
                      | ~ ssItem(A)
                      | ~ ssList(D)
                      | ~ leq(B,A)
                      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                      | ~ ssItem(B) ) )),
                  ( ( ~ ssItem(A)
                    | ~ ssItem(B)
                    | ~ ssList(C)
                    | ~ ssList(D)
                    | ~ ssList(E)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ leq(B,A)
                    | ~ ssItem(F) )
                <=> ( ~ ssList(C)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ leq(B,A)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ ssItem(B)
                    | ~ ssItem(F) ) )),
                rewrite(
                  ( ( ~ ssList(C)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ leq(B,A)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ ssItem(B)
                    | ~ ssItem(F) )
                <=> ( ~ ssList(C)
                    | ~ ssItem(F)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ leq(B,A)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ ssItem(B) ) )),
                ( ( ~ ssItem(A)
                  | ~ ssItem(B)
                  | ~ ssList(C)
                  | ~ ssList(D)
                  | ~ ssList(E)
                  | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                  | ~ leq(B,A)
                  | ~ ssItem(F) )
              <=> ( ~ ssList(C)
                  | ~ ssItem(F)
                  | ~ ssList(E)
                  | ~ ssItem(A)
                  | ~ ssList(D)
                  | ~ leq(B,A)
                  | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                  | ~ ssItem(B) ) )),
              ( ( ~ ssItem(A)
                | ~ ssItem(B)
                | ~ ssList(C)
                | ~ ssList(D)
                | ~ ssList(E)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ leq(B,A)
                | ~ ssItem(F)
                | ~ memberP(D,F) )
            <=> ( ~ ssList(C)
                | ~ ssItem(F)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ leq(B,A)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ ssItem(B)
                | ~ memberP(D,F) ) )),
            rewrite(
              ( ( ~ ssList(C)
                | ~ ssItem(F)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ leq(B,A)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ ssItem(B)
                | ~ memberP(D,F) )
            <=> ( ~ ssList(C)
                | ~ ssItem(F)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ memberP(D,F)
                | ~ leq(B,A)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ ssItem(B) ) )),
            ( ( ~ ssItem(A)
              | ~ ssItem(B)
              | ~ ssList(C)
              | ~ ssList(D)
              | ~ ssList(E)
              | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
              | ~ leq(B,A)
              | ~ ssItem(F)
              | ~ memberP(D,F) )
          <=> ( ~ ssList(C)
              | ~ ssItem(F)
              | ~ ssList(E)
              | ~ ssItem(A)
              | ~ ssList(D)
              | ~ memberP(D,F)
              | ~ leq(B,A)
              | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
              | ~ ssItem(B) ) )),
          ( ( ~ ssItem(A)
            | ~ ssItem(B)
            | ~ ssList(C)
            | ~ ssList(D)
            | ~ ssList(E)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ leq(B,A)
            | ~ ssItem(F)
            | ~ memberP(D,F)
            | leq(F,B) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B)
            | leq(F,B) ) )),
        rewrite(
          ( ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B)
            | leq(F,B) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B)
            | leq(F,B) ) )),
        ( ( ~ ssItem(A)
          | ~ ssItem(B)
          | ~ ssList(C)
          | ~ ssList(D)
          | ~ ssList(E)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          | ~ leq(B,A)
          | ~ ssItem(F)
          | ~ memberP(D,F)
          | leq(F,B) )
      <=> ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          | ~ ssItem(B)
          | leq(F,B) ) )),
    inference(bind,[status(th)],]) ).

tff(96,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssItem(B)
        | ~ ssList(C)
        | ~ ssList(D)
        | ~ ssList(E)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ leq(B,A)
        | ~ ssItem(F)
        | ~ memberP(D,F)
        | leq(F,B) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B)
        | leq(F,B) ) ),
    inference(quant_intro,[status(thm)],[95]) ).

tff(97,axiom,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssItem(B)
      | ~ ssList(C)
      | ~ ssList(D)
      | ~ ssList(E)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
      | ~ leq(B,A)
      | ~ ssItem(F)
      | ~ memberP(D,F)
      | leq(F,B) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_9) ).

tff(98,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
      | ~ ssItem(B)
      | leq(F,B) ),
    inference(modus_ponens,[status(thm)],[97,96]) ).

tff(99,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
      | ~ ssItem(B)
      | leq(F,B) ),
    inference(modus_ponens,[status(thm)],[98,94]) ).

tff(100,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ~ ssItem(B)
      | leq(F,B)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[99,93]) ).

tff(101,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ~ ssItem(B)
      | leq(F,B)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(skolemize,[status(sab)],[100]) ).

tff(102,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ~ ssItem(B)
      | leq(F,B)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[101,91]) ).

tff(103,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | leq(F,B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | leq(F,B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(104,plain,
    ( ( ~ ssList(sk7)
      | ~ ssItem(sk10)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ~ ssItem(sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(105,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | leq(F,B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssItem(sk10)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ~ ssItem(sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | leq(F,B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(monotonicity,[status(thm)],[104]) ).

tff(106,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | leq(F,B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssItem(sk10)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ~ ssItem(sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | leq(F,B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | leq(sk10,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(transitivity,[status(thm)],[105,103]) ).

tff(107,plain,
    ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | leq(F,B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
    | ~ ssList(sk7)
    | ~ ssItem(sk10)
    | ~ ssList(sk9)
    | ~ ssItem(sk5)
    | ~ ssList(sk8)
    | ~ memberP(sk8,sk10)
    | ~ leq(sk5,sk5)
    | ~ ssItem(sk5)
    | leq(sk10,sk5)
    | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(108,plain,
    ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | leq(F,B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
    | ~ ssList(sk7)
    | ~ ssList(sk8)
    | ~ ssList(sk9)
    | ~ ssItem(sk5)
    | ~ ssItem(sk10)
    | ~ memberP(sk8,sk10)
    | ~ leq(sk5,sk5)
    | leq(sk10,sk5)
    | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[107,106]) ).

tff(109,plain,
    ( leq(sk10,sk5)
    | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(unit_resolution,[status(thm)],[108,102,18,12,9,6,89,85,77]) ).

tff(110,plain,
    leq(sk10,sk5),
    inference(unit_resolution,[status(thm)],[109,66]) ).

tff(111,plain,
    leq(sk10,sk6),
    inference(modus_ponens,[status(thm)],[110,79]) ).

tff(112,plain,
    ( ( ~ leq(sk5,sk6)
      | ~ leq(sk5,sk10)
      | ~ leq(sk10,sk6) )
  <=> ( ~ leq(sk5,sk6)
      | ~ leq(sk5,sk10)
      | ~ leq(sk10,sk6) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(113,plain,
    ( ( ~ leq(sk10,sk6)
      | ~ leq(sk5,sk10)
      | ~ leq(sk5,sk6) )
  <=> ( ~ leq(sk5,sk6)
      | ~ leq(sk5,sk10)
      | ~ leq(sk10,sk6) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(114,axiom,
    ( ~ leq(sk10,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk5,sk6) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_19) ).

tff(115,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[114,113]) ).

tff(116,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[115,112]) ).

tff(117,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[116,112]) ).

tff(118,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[117,112]) ).

tff(119,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[118,112]) ).

tff(120,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[119,112]) ).

tff(121,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[120,112]) ).

tff(122,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[121,112]) ).

tff(123,plain,
    ( ~ leq(sk5,sk6)
    | ~ leq(sk5,sk10)
    | ~ leq(sk10,sk6) ),
    inference(modus_ponens,[status(thm)],[122,112]) ).

tff(124,plain,
    ~ leq(sk5,sk10),
    inference(unit_resolution,[status(thm)],[123,111,44]) ).

tff(125,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      refl(
        ( ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | leq(A,F)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      <=> ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | leq(A,F)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
    inference(bind,[status(th)],]) ).

tff(126,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | leq(A,F)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ~ ssItem(B)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | leq(A,F)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ~ ssItem(B)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(quant_intro,[status(thm)],[125]) ).

tff(127,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          <=> ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )),
          ( ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) )
            | ~ ssItem(B) ) )),
        rewrite(
          ( ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) )
            | ~ ssItem(B) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
        ( ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | leq(A,F)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          | ~ ssItem(B) )
      <=> ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | leq(A,F)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) )),
    inference(bind,[status(th)],]) ).

tff(128,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | leq(A,F)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | leq(A,F)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ~ ssItem(B)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(quant_intro,[status(thm)],[127]) ).

tff(129,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | leq(A,F)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | leq(A,F)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(130,plain,
    ^ [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              trans(
                monotonicity(
                  trans(
                    monotonicity(
                      trans(
                        monotonicity(
                          trans(
                            monotonicity(
                              trans(
                                monotonicity(
                                  rewrite(
                                    ( ( ~ ssItem(A)
                                      | ~ ssItem(B)
                                      | ~ ssList(C) )
                                  <=> ( ~ ssList(C)
                                      | ~ ssItem(A)
                                      | ~ ssItem(B) ) )),
                                  ( ( ~ ssItem(A)
                                    | ~ ssItem(B)
                                    | ~ ssList(C)
                                    | ~ ssList(D) )
                                <=> ( ~ ssList(C)
                                    | ~ ssItem(A)
                                    | ~ ssItem(B)
                                    | ~ ssList(D) ) )),
                                rewrite(
                                  ( ( ~ ssList(C)
                                    | ~ ssItem(A)
                                    | ~ ssItem(B)
                                    | ~ ssList(D) )
                                <=> ( ~ ssList(C)
                                    | ~ ssItem(A)
                                    | ~ ssList(D)
                                    | ~ ssItem(B) ) )),
                                ( ( ~ ssItem(A)
                                  | ~ ssItem(B)
                                  | ~ ssList(C)
                                  | ~ ssList(D) )
                              <=> ( ~ ssList(C)
                                  | ~ ssItem(A)
                                  | ~ ssList(D)
                                  | ~ ssItem(B) ) )),
                              ( ( ~ ssItem(A)
                                | ~ ssItem(B)
                                | ~ ssList(C)
                                | ~ ssList(D)
                                | ~ ssList(E) )
                            <=> ( ~ ssList(C)
                                | ~ ssItem(A)
                                | ~ ssList(D)
                                | ~ ssItem(B)
                                | ~ ssList(E) ) )),
                            rewrite(
                              ( ( ~ ssList(C)
                                | ~ ssItem(A)
                                | ~ ssList(D)
                                | ~ ssItem(B)
                                | ~ ssList(E) )
                            <=> ( ~ ssList(C)
                                | ~ ssList(E)
                                | ~ ssItem(A)
                                | ~ ssList(D)
                                | ~ ssItem(B) ) )),
                            ( ( ~ ssItem(A)
                              | ~ ssItem(B)
                              | ~ ssList(C)
                              | ~ ssList(D)
                              | ~ ssList(E) )
                          <=> ( ~ ssList(C)
                              | ~ ssList(E)
                              | ~ ssItem(A)
                              | ~ ssList(D)
                              | ~ ssItem(B) ) )),
                          ( ( ~ ssItem(A)
                            | ~ ssItem(B)
                            | ~ ssList(C)
                            | ~ ssList(D)
                            | ~ ssList(E)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                        <=> ( ~ ssList(C)
                            | ~ ssList(E)
                            | ~ ssItem(A)
                            | ~ ssList(D)
                            | ~ ssItem(B)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) ) )),
                        rewrite(
                          ( ( ~ ssList(C)
                            | ~ ssList(E)
                            | ~ ssItem(A)
                            | ~ ssList(D)
                            | ~ ssItem(B)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                        <=> ( ~ ssList(C)
                            | ~ ssList(E)
                            | ~ ssItem(A)
                            | ~ ssList(D)
                            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                            | ~ ssItem(B) ) )),
                        ( ( ~ ssItem(A)
                          | ~ ssItem(B)
                          | ~ ssList(C)
                          | ~ ssList(D)
                          | ~ ssList(E)
                          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 ) )
                      <=> ( ~ ssList(C)
                          | ~ ssList(E)
                          | ~ ssItem(A)
                          | ~ ssList(D)
                          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                          | ~ ssItem(B) ) )),
                      ( ( ~ ssItem(A)
                        | ~ ssItem(B)
                        | ~ ssList(C)
                        | ~ ssList(D)
                        | ~ ssList(E)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ leq(B,A) )
                    <=> ( ~ ssList(C)
                        | ~ ssList(E)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ ssItem(B)
                        | ~ leq(B,A) ) )),
                    rewrite(
                      ( ( ~ ssList(C)
                        | ~ ssList(E)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ ssItem(B)
                        | ~ leq(B,A) )
                    <=> ( ~ ssList(C)
                        | ~ ssList(E)
                        | ~ ssItem(A)
                        | ~ ssList(D)
                        | ~ leq(B,A)
                        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                        | ~ ssItem(B) ) )),
                    ( ( ~ ssItem(A)
                      | ~ ssItem(B)
                      | ~ ssList(C)
                      | ~ ssList(D)
                      | ~ ssList(E)
                      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                      | ~ leq(B,A) )
                  <=> ( ~ ssList(C)
                      | ~ ssList(E)
                      | ~ ssItem(A)
                      | ~ ssList(D)
                      | ~ leq(B,A)
                      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                      | ~ ssItem(B) ) )),
                  ( ( ~ ssItem(A)
                    | ~ ssItem(B)
                    | ~ ssList(C)
                    | ~ ssList(D)
                    | ~ ssList(E)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ leq(B,A)
                    | ~ ssItem(F) )
                <=> ( ~ ssList(C)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ leq(B,A)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ ssItem(B)
                    | ~ ssItem(F) ) )),
                rewrite(
                  ( ( ~ ssList(C)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ leq(B,A)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ ssItem(B)
                    | ~ ssItem(F) )
                <=> ( ~ ssList(C)
                    | ~ ssItem(F)
                    | ~ ssList(E)
                    | ~ ssItem(A)
                    | ~ ssList(D)
                    | ~ leq(B,A)
                    | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                    | ~ ssItem(B) ) )),
                ( ( ~ ssItem(A)
                  | ~ ssItem(B)
                  | ~ ssList(C)
                  | ~ ssList(D)
                  | ~ ssList(E)
                  | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                  | ~ leq(B,A)
                  | ~ ssItem(F) )
              <=> ( ~ ssList(C)
                  | ~ ssItem(F)
                  | ~ ssList(E)
                  | ~ ssItem(A)
                  | ~ ssList(D)
                  | ~ leq(B,A)
                  | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                  | ~ ssItem(B) ) )),
              ( ( ~ ssItem(A)
                | ~ ssItem(B)
                | ~ ssList(C)
                | ~ ssList(D)
                | ~ ssList(E)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ leq(B,A)
                | ~ ssItem(F)
                | ~ memberP(D,F) )
            <=> ( ~ ssList(C)
                | ~ ssItem(F)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ leq(B,A)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ ssItem(B)
                | ~ memberP(D,F) ) )),
            rewrite(
              ( ( ~ ssList(C)
                | ~ ssItem(F)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ leq(B,A)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ ssItem(B)
                | ~ memberP(D,F) )
            <=> ( ~ ssList(C)
                | ~ ssItem(F)
                | ~ ssList(E)
                | ~ ssItem(A)
                | ~ ssList(D)
                | ~ memberP(D,F)
                | ~ leq(B,A)
                | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
                | ~ ssItem(B) ) )),
            ( ( ~ ssItem(A)
              | ~ ssItem(B)
              | ~ ssList(C)
              | ~ ssList(D)
              | ~ ssList(E)
              | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
              | ~ leq(B,A)
              | ~ ssItem(F)
              | ~ memberP(D,F) )
          <=> ( ~ ssList(C)
              | ~ ssItem(F)
              | ~ ssList(E)
              | ~ ssItem(A)
              | ~ ssList(D)
              | ~ memberP(D,F)
              | ~ leq(B,A)
              | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
              | ~ ssItem(B) ) )),
          ( ( ~ ssItem(A)
            | ~ ssItem(B)
            | ~ ssList(C)
            | ~ ssList(D)
            | ~ ssList(E)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ leq(B,A)
            | ~ ssItem(F)
            | ~ memberP(D,F)
            | leq(A,F) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B)
            | leq(A,F) ) )),
        rewrite(
          ( ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B)
            | leq(A,F) )
        <=> ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
            | ~ ssItem(B) ) )),
        ( ( ~ ssItem(A)
          | ~ ssItem(B)
          | ~ ssList(C)
          | ~ ssList(D)
          | ~ ssList(E)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          | ~ leq(B,A)
          | ~ ssItem(F)
          | ~ memberP(D,F)
          | leq(A,F) )
      <=> ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | leq(A,F)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
          | ~ ssItem(B) ) )),
    inference(bind,[status(th)],]) ).

tff(131,plain,
    ( ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssItem(A)
        | ~ ssItem(B)
        | ~ ssList(C)
        | ~ ssList(D)
        | ~ ssList(E)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ leq(B,A)
        | ~ ssItem(F)
        | ~ memberP(D,F)
        | leq(A,F) )
  <=> ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
        ( ~ ssList(C)
        | ~ ssItem(F)
        | ~ ssList(E)
        | ~ ssItem(A)
        | ~ ssList(D)
        | leq(A,F)
        | ~ memberP(D,F)
        | ~ leq(B,A)
        | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
        | ~ ssItem(B) ) ),
    inference(quant_intro,[status(thm)],[130]) ).

tff(132,axiom,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssItem(A)
      | ~ ssItem(B)
      | ~ ssList(C)
      | ~ ssList(D)
      | ~ ssList(E)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
      | ~ leq(B,A)
      | ~ ssItem(F)
      | ~ memberP(D,F)
      | leq(A,F) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',co1_8) ).

tff(133,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | leq(A,F)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
      | ~ ssItem(B) ),
    inference(modus_ponens,[status(thm)],[132,131]) ).

tff(134,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | leq(A,F)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != sk3 )
      | ~ ssItem(B) ),
    inference(modus_ponens,[status(thm)],[133,129]) ).

tff(135,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | leq(A,F)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ~ ssItem(B)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[134,128]) ).

tff(136,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | leq(A,F)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ~ ssItem(B)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(skolemize,[status(sab)],[135]) ).

tff(137,plain,
    ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
      ( ~ ssList(C)
      | ~ ssItem(F)
      | ~ ssList(E)
      | ~ ssItem(A)
      | ~ ssList(D)
      | leq(A,F)
      | ~ memberP(D,F)
      | ~ leq(B,A)
      | ~ ssItem(B)
      | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[136,126]) ).

tff(138,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk10)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk10)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(139,plain,
    ( ( ~ ssList(sk7)
      | ~ ssItem(sk10)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | leq(sk5,sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ~ ssItem(sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( leq(sk5,sk10)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(140,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssItem(sk10)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | leq(sk5,sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ~ ssItem(sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk10)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(monotonicity,[status(thm)],[139]) ).

tff(141,plain,
    ( ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | ~ ssList(sk7)
      | ~ ssItem(sk10)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssList(sk8)
      | leq(sk5,sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ~ ssItem(sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
  <=> ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
            ( ~ ssList(C)
            | ~ ssItem(F)
            | ~ ssList(E)
            | ~ ssItem(A)
            | ~ ssList(D)
            | leq(A,F)
            | ~ memberP(D,F)
            | ~ leq(B,A)
            | ~ ssItem(B)
            | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
      | leq(sk5,sk10)
      | ~ ssList(sk7)
      | ~ ssList(sk8)
      | ~ ssList(sk9)
      | ~ ssItem(sk5)
      | ~ ssItem(sk10)
      | ~ memberP(sk8,sk10)
      | ~ leq(sk5,sk5)
      | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ) ),
    inference(transitivity,[status(thm)],[140,138]) ).

tff(142,plain,
    ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | leq(A,F)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
    | ~ ssList(sk7)
    | ~ ssItem(sk10)
    | ~ ssList(sk9)
    | ~ ssItem(sk5)
    | ~ ssList(sk8)
    | leq(sk5,sk10)
    | ~ memberP(sk8,sk10)
    | ~ leq(sk5,sk5)
    | ~ ssItem(sk5)
    | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(143,plain,
    ( ~ ! [B: $i,D: $i,A: $i,E: $i,F: $i,C: $i] :
          ( ~ ssList(C)
          | ~ ssItem(F)
          | ~ ssList(E)
          | ~ ssItem(A)
          | ~ ssList(D)
          | leq(A,F)
          | ~ memberP(D,F)
          | ~ leq(B,A)
          | ~ ssItem(B)
          | ( app(app(app(app(C,cons(A,nil)),D),cons(B,nil)),E) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) )
    | leq(sk5,sk10)
    | ~ ssList(sk7)
    | ~ ssList(sk8)
    | ~ ssList(sk9)
    | ~ ssItem(sk5)
    | ~ ssItem(sk10)
    | ~ memberP(sk8,sk10)
    | ~ leq(sk5,sk5)
    | ( app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk5,nil)),sk9) != app(app(app(app(sk7,cons(sk5,nil)),sk8),cons(sk6,nil)),sk9) ) ),
    inference(modus_ponens,[status(thm)],[142,141]) ).

tff(144,plain,
    $false,
    inference(unit_resolution,[status(thm)],[143,137,18,12,9,6,89,85,124,77,66]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SWC153-1 : TPTP v8.1.0. Released v2.4.0.
% 0.07/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.13/0.34  % Computer : n005.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 21:54:18 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.
% 10.10/6.76  % SZS status Unsatisfiable
% 10.10/6.76  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------