TSTP Solution File: DAT085_1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : DAT085_1 : TPTP v8.1.0. Released v6.1.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n025.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 : Fri Sep 16 14:36:40 EDT 2022

% Result   : Theorem 0.11s 0.39s
% Output   : Proof 0.17s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   18
%            Number of leaves      :   96
% Syntax   : Number of formulae    :  235 (  97 unt;   6 typ;   0 def)
%            Number of atoms       :  553 ( 467 equ)
%            Maximal formula atoms :    8 (   2 avg)
%            Number of connectives :  453 ( 159   ~; 181   |;   0   &)
%                                         (  98 <=>;  15  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    9 (   3 avg)
%            Maximal term depth    :    7 (   2 avg)
%            Number of FOOLs       :   30 (  30 fml;   0 var)
%            Number arithmetic     : 1980 (  48 atm; 664 fun;1066 num; 202 var)
%            Number of types       :    1 (   0 usr;   1 ari)
%            Number of type conns  :    8 (   5   >;   3   *;   0   +;   0  <<)
%            Number of predicates  :   10 (   5 usr;   3 prp; 0-3 aty)
%            Number of functors    :   11 (   6 usr;   4 con; 0-2 aty)
%            Number of variables   :  386 ( 342   !;   0   ?; 386   :)

% Comments : 
%------------------------------------------------------------------------------
tff(count_type,type,
    count: ( $int * list ) > $int ).

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

tff(nil_type,type,
    nil: list ).

tff(head_type,type,
    head: list > $int ).

tff(length_type,type,
    length: list > $int ).

tff(append_type,type,
    append: ( list * list ) > list ).

tff(1,plain,
    ( ( 0 = 1 )
  <=> $false ),
    inference(rewrite,[status(thm)],]) ).

tff(2,plain,
    ^ [H: $int,T: list] :
      refl(
        ( ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      <=> ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 ) )),
    inference(bind,[status(th)],]) ).

tff(3,plain,
    ( ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
  <=> ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 ) ),
    inference(quant_intro,[status(thm)],[2]) ).

tff(4,plain,
    ^ [H: $int,T: list] :
      rewrite(
        ( ( length(cons(H,T)) = $sum(1,length(T)) )
      <=> ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 ) )),
    inference(bind,[status(th)],]) ).

tff(5,plain,
    ( ! [H: $int,T: list] : ( length(cons(H,T)) = $sum(1,length(T)) )
  <=> ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 ) ),
    inference(quant_intro,[status(thm)],[4]) ).

tff(6,plain,
    ( ! [H: $int,T: list] : ( length(cons(H,T)) = $sum(1,length(T)) )
  <=> ! [H: $int,T: list] : ( length(cons(H,T)) = $sum(1,length(T)) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(7,axiom,
    ! [H: $int,T: list] : ( length(cons(H,T)) = $sum(1,length(T)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l_1) ).

tff(8,plain,
    ! [H: $int,T: list] : ( length(cons(H,T)) = $sum(1,length(T)) ),
    inference(modus_ponens,[status(thm)],[7,6]) ).

tff(9,plain,
    ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 ),
    inference(modus_ponens,[status(thm)],[8,5]) ).

tff(10,plain,
    ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 ),
    inference(skolemize,[status(sab)],[9]) ).

tff(11,plain,
    ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 ),
    inference(modus_ponens,[status(thm)],[10,3]) ).

tff(12,plain,
    ( ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1 ) )
  <=> ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(13,plain,
    ( ( $sum($product(-1,length(nil)),length(cons(0,nil))) = 1 )
  <=> ( $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(14,plain,
    $sum(length(cons(0,nil)),$product(-1,length(nil))) = $sum($product(-1,length(nil)),length(cons(0,nil))),
    inference(rewrite,[status(thm)],]) ).

tff(15,plain,
    ( ( $sum(length(cons(0,nil)),$product(-1,length(nil))) = 1 )
  <=> ( $sum($product(-1,length(nil)),length(cons(0,nil))) = 1 ) ),
    inference(monotonicity,[status(thm)],[14]) ).

tff(16,plain,
    ( ( $sum(length(cons(0,nil)),$product(-1,length(nil))) = 1 )
  <=> ( $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1 ) ),
    inference(transitivity,[status(thm)],[15,13]) ).

tff(17,plain,
    ( ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(cons(0,nil)),$product(-1,length(nil))) = 1 ) )
  <=> ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1 ) ) ),
    inference(monotonicity,[status(thm)],[16]) ).

tff(18,plain,
    ( ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(cons(0,nil)),$product(-1,length(nil))) = 1 ) )
  <=> ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1 ) ) ),
    inference(transitivity,[status(thm)],[17,12]) ).

tff(19,plain,
    ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
    | ( $sum(length(cons(0,nil)),$product(-1,length(nil))) = 1 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(20,plain,
    ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
    | ( $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1 ) ),
    inference(modus_ponens,[status(thm)],[19,18]) ).

tff(21,plain,
    $sum(length(nil),$product(-1,length(cons(0,nil)))) = -1,
    inference(unit_resolution,[status(thm)],[20,11]) ).

tff(22,plain,
    ( ( $sum(length(nil),$product(-1,length(cons(0,nil)))) != -1 )
    | $lesseq($sum(length(nil),$product(-1,length(cons(0,nil)))),-1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(23,plain,
    $lesseq($sum(length(nil),$product(-1,length(cons(0,nil)))),-1),
    inference(unit_resolution,[status(thm)],[22,21]) ).

tff(24,plain,
    ( ( $sum(length(nil),$product(-1,length(cons(0,nil)))) != -1 )
    | $greatereq($sum(length(nil),$product(-1,length(cons(0,nil)))),-1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(25,plain,
    $greatereq($sum(length(nil),$product(-1,length(cons(0,nil)))),-1),
    inference(unit_resolution,[status(thm)],[24,21]) ).

tff(26,plain,
    ( ( length(nil) = 0 )
  <=> ( length(nil) = 0 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(27,axiom,
    length(nil) = 0,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l) ).

tff(28,plain,
    length(nil) = 0,
    inference(modus_ponens,[status(thm)],[27,26]) ).

tff(29,plain,
    ( ( length(nil) != 0 )
    | $lesseq(length(nil),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(30,plain,
    $lesseq(length(nil),0),
    inference(unit_resolution,[status(thm)],[29,28]) ).

tff(31,plain,
    ( ( length(nil) != 0 )
    | $greatereq(length(nil),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(32,plain,
    $greatereq(length(nil),0),
    inference(unit_resolution,[status(thm)],[31,28]) ).

tff(33,plain,
    ^ [K: $int,L: list] :
      refl(
        ( ( $sum(K,$product(-1,head(cons(K,L)))) = 0 )
      <=> ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ) )),
    inference(bind,[status(th)],]) ).

tff(34,plain,
    ( ! [K: $int,L: list] : ( $sum(K,$product(-1,head(cons(K,L)))) = 0 )
  <=> ! [K: $int,L: list] : ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ) ),
    inference(quant_intro,[status(thm)],[33]) ).

tff(35,plain,
    ^ [K: $int,L: list] :
      trans(
        monotonicity(rewrite($sum(head(cons(K,L)),$product(-1,K)) = $sum($product(-1,K),head(cons(K,L)))),
          ( ( $sum(head(cons(K,L)),$product(-1,K)) = 0 )
        <=> ( $sum($product(-1,K),head(cons(K,L))) = 0 ) )),
        rewrite(
          ( ( $sum($product(-1,K),head(cons(K,L))) = 0 )
        <=> ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ) )),
        ( ( $sum(head(cons(K,L)),$product(-1,K)) = 0 )
      <=> ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ) )),
    inference(bind,[status(th)],]) ).

tff(36,plain,
    ( ! [K: $int,L: list] : ( $sum(head(cons(K,L)),$product(-1,K)) = 0 )
  <=> ! [K: $int,L: list] : ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ) ),
    inference(quant_intro,[status(thm)],[35]) ).

tff(37,plain,
    ^ [K: $int,L: list] :
      rewrite(
        ( ( head(cons(K,L)) = K )
      <=> ( $sum(head(cons(K,L)),$product(-1,K)) = 0 ) )),
    inference(bind,[status(th)],]) ).

tff(38,plain,
    ( ! [K: $int,L: list] : ( head(cons(K,L)) = K )
  <=> ! [K: $int,L: list] : ( $sum(head(cons(K,L)),$product(-1,K)) = 0 ) ),
    inference(quant_intro,[status(thm)],[37]) ).

tff(39,plain,
    ( ! [K: $int,L: list] : ( head(cons(K,L)) = K )
  <=> ! [K: $int,L: list] : ( head(cons(K,L)) = K ) ),
    inference(rewrite,[status(thm)],]) ).

tff(40,axiom,
    ! [K: $int,L: list] : ( head(cons(K,L)) = K ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l1) ).

tff(41,plain,
    ! [K: $int,L: list] : ( head(cons(K,L)) = K ),
    inference(modus_ponens,[status(thm)],[40,39]) ).

tff(42,plain,
    ! [K: $int,L: list] : ( $sum(head(cons(K,L)),$product(-1,K)) = 0 ),
    inference(modus_ponens,[status(thm)],[41,38]) ).

tff(43,plain,
    ! [K: $int,L: list] : ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ),
    inference(modus_ponens,[status(thm)],[42,36]) ).

tff(44,plain,
    ! [K: $int,L: list] : ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ),
    inference(skolemize,[status(sab)],[43]) ).

tff(45,plain,
    ! [K: $int,L: list] : ( $sum(K,$product(-1,head(cons(K,L)))) = 0 ),
    inference(modus_ponens,[status(thm)],[44,34]) ).

tff(46,plain,
    ( ~ ! [K: $int,L: list] : ( $sum(K,$product(-1,head(cons(K,L)))) = 0 )
    | ( $sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))) = 0 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(47,plain,
    $sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))) = 0,
    inference(unit_resolution,[status(thm)],[46,45]) ).

tff(48,plain,
    ( ( $sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))) != 0 )
    | $lesseq($sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(49,plain,
    $lesseq($sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))),0),
    inference(unit_resolution,[status(thm)],[48,47]) ).

tff(50,plain,
    ( ( $sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))) != 0 )
    | $greatereq($sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(51,plain,
    $greatereq($sum(length(cons(0,nil)),$product(-1,head(cons(length(cons(0,nil)),nil)))),0),
    inference(unit_resolution,[status(thm)],[50,47]) ).

tff(52,plain,
    head(cons(length(cons(0,nil)),nil)) = 1,
    inference(theory_lemma,[status(thm)],[51,49,32,30,25,23]) ).

tff(53,plain,
    length(cons(0,nil)) = head(cons(length(cons(0,nil)),nil)),
    inference(theory_lemma,[status(thm)],[51,49,32,30,25,23,32,30,25,23]) ).

tff(54,plain,
    ^ [K: $int,H: $int,T: list] :
      refl(
        ( ( ( $sum(H,$product(-1,K)) != 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      <=> ( ( $sum(H,$product(-1,K)) != 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ) )),
    inference(bind,[status(th)],]) ).

tff(55,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( $sum(H,$product(-1,K)) != 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( $sum(H,$product(-1,K)) != 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ) ),
    inference(quant_intro,[status(thm)],[54]) ).

tff(56,plain,
    ^ [K: $int,H: $int,T: list] :
      rewrite(
        ( ( ( $sum(K,$product(-1,H)) != 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      <=> ( ( $sum(H,$product(-1,K)) != 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ) )),
    inference(bind,[status(th)],]) ).

tff(57,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( $sum(K,$product(-1,H)) != 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( $sum(H,$product(-1,K)) != 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ) ),
    inference(quant_intro,[status(thm)],[56]) ).

tff(58,plain,
    ^ [K: $int,H: $int,T: list] :
      rewrite(
        ( ( ( K != H )
          | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) )
      <=> ( ( $sum(K,$product(-1,H)) != 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ) )),
    inference(bind,[status(th)],]) ).

tff(59,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( K != H )
        | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( $sum(K,$product(-1,H)) != 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ) ),
    inference(quant_intro,[status(thm)],[58]) ).

tff(60,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( K != H )
        | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( K != H )
        | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(61,plain,
    ( ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K != H )
        | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( K != H )
        | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ) ),
    inference(elim_unused_vars,[status(thm)],]) ).

tff(62,plain,
    ^ [K: $int,H: $int,T: list,N: $int] :
      trans(
        monotonicity(
          rewrite(
            ( ( count(K,cons(H,T)) = $sum(count(K,T),1) )
          <=> ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) )),
          ( ( ( K = H )
           => ( count(K,cons(H,T)) = $sum(count(K,T),1) ) )
        <=> ( ( K = H )
           => ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ) )),
        rewrite(
          ( ( ( K = H )
           => ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) )
        <=> ( ( K != H )
            | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ) )),
        ( ( ( K = H )
         => ( count(K,cons(H,T)) = $sum(count(K,T),1) ) )
      <=> ( ( K != H )
          | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ) )),
    inference(bind,[status(th)],]) ).

tff(63,plain,
    ( ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K = H )
       => ( count(K,cons(H,T)) = $sum(count(K,T),1) ) )
  <=> ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K != H )
        | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ) ),
    inference(quant_intro,[status(thm)],[62]) ).

tff(64,plain,
    ( ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K = H )
       => ( count(K,cons(H,T)) = $sum(count(K,T),1) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( K != H )
        | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ) ),
    inference(transitivity,[status(thm)],[63,61]) ).

tff(65,axiom,
    ! [K: $int,H: $int,T: list,N: $int] :
      ( ( K = H )
     => ( count(K,cons(H,T)) = $sum(count(K,T),1) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',a_4) ).

tff(66,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( K != H )
      | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ),
    inference(modus_ponens,[status(thm)],[65,64]) ).

tff(67,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( K != H )
      | ( count(K,cons(H,T)) = $sum(1,count(K,T)) ) ),
    inference(modus_ponens,[status(thm)],[66,60]) ).

tff(68,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(K,$product(-1,H)) != 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ),
    inference(modus_ponens,[status(thm)],[67,59]) ).

tff(69,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(H,$product(-1,K)) != 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ),
    inference(modus_ponens,[status(thm)],[68,57]) ).

tff(70,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(H,$product(-1,K)) != 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ),
    inference(skolemize,[status(sab)],[69]) ).

tff(71,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(H,$product(-1,K)) != 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) ),
    inference(modus_ponens,[status(thm)],[70,55]) ).

tff(72,plain,
    ( ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) != 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) )
  <=> ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) != 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(73,plain,
    ( ( $false
      | ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(74,plain,
    ( ( $sum($product(-1,count(0,nil)),count(0,cons(0,nil))) = 1 )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(75,plain,
    $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = $sum($product(-1,count(0,nil)),count(0,cons(0,nil))),
    inference(rewrite,[status(thm)],]) ).

tff(76,plain,
    ( ( $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = 1 )
  <=> ( $sum($product(-1,count(0,nil)),count(0,cons(0,nil))) = 1 ) ),
    inference(monotonicity,[status(thm)],[75]) ).

tff(77,plain,
    ( ( $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = 1 )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ),
    inference(transitivity,[status(thm)],[76,74]) ).

tff(78,plain,
    ( ~ $true
  <=> $false ),
    inference(rewrite,[status(thm)],]) ).

tff(79,plain,
    ( ( 0 = 0 )
  <=> $true ),
    inference(rewrite,[status(thm)],]) ).

tff(80,plain,
    $sum(0,0) = 0,
    inference(rewrite,[status(thm)],]) ).

tff(81,plain,
    $product(-1,0) = 0,
    inference(rewrite,[status(thm)],]) ).

tff(82,plain,
    $sum(0,$product(-1,0)) = $sum(0,0),
    inference(monotonicity,[status(thm)],[81]) ).

tff(83,plain,
    $sum(0,$product(-1,0)) = 0,
    inference(transitivity,[status(thm)],[82,80]) ).

tff(84,plain,
    ( ( $sum(0,$product(-1,0)) = 0 )
  <=> ( 0 = 0 ) ),
    inference(monotonicity,[status(thm)],[83]) ).

tff(85,plain,
    ( ( $sum(0,$product(-1,0)) = 0 )
  <=> $true ),
    inference(transitivity,[status(thm)],[84,79]) ).

tff(86,plain,
    ( ( $sum(0,$product(-1,0)) != 0 )
  <=> ~ $true ),
    inference(monotonicity,[status(thm)],[85]) ).

tff(87,plain,
    ( ( $sum(0,$product(-1,0)) != 0 )
  <=> $false ),
    inference(transitivity,[status(thm)],[86,78]) ).

tff(88,plain,
    ( ( ( $sum(0,$product(-1,0)) != 0 )
      | ( $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = 1 ) )
  <=> ( $false
      | ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ) ),
    inference(monotonicity,[status(thm)],[87,77]) ).

tff(89,plain,
    ( ( ( $sum(0,$product(-1,0)) != 0 )
      | ( $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = 1 ) )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ),
    inference(transitivity,[status(thm)],[88,73]) ).

tff(90,plain,
    ( ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) != 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      | ( $sum(0,$product(-1,0)) != 0 )
      | ( $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = 1 ) )
  <=> ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) != 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ) ),
    inference(monotonicity,[status(thm)],[89]) ).

tff(91,plain,
    ( ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) != 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      | ( $sum(0,$product(-1,0)) != 0 )
      | ( $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = 1 ) )
  <=> ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) != 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ) ),
    inference(transitivity,[status(thm)],[90,72]) ).

tff(92,plain,
    ( ~ ! [K: $int,H: $int,T: list] :
          ( ( $sum(H,$product(-1,K)) != 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
    | ( $sum(0,$product(-1,0)) != 0 )
    | ( $sum(count(0,cons(0,nil)),$product(-1,count(0,nil))) = 1 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(93,plain,
    ( ~ ! [K: $int,H: $int,T: list] :
          ( ( $sum(H,$product(-1,K)) != 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 1 ) )
    | ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1 ) ),
    inference(modus_ponens,[status(thm)],[92,91]) ).

tff(94,plain,
    $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) = -1,
    inference(unit_resolution,[status(thm)],[93,71]) ).

tff(95,plain,
    ( ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) != -1 )
    | $lesseq($sum(count(0,nil),$product(-1,count(0,cons(0,nil)))),-1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(96,plain,
    $lesseq($sum(count(0,nil),$product(-1,count(0,cons(0,nil)))),-1),
    inference(unit_resolution,[status(thm)],[95,94]) ).

tff(97,plain,
    ( ( $sum(count(0,nil),$product(-1,count(0,cons(0,nil)))) != -1 )
    | $greatereq($sum(count(0,nil),$product(-1,count(0,cons(0,nil)))),-1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(98,plain,
    $greatereq($sum(count(0,nil),$product(-1,count(0,cons(0,nil)))),-1),
    inference(unit_resolution,[status(thm)],[97,94]) ).

tff(99,plain,
    ^ [K: $int] :
      refl(
        ( ( count(K,nil) = 0 )
      <=> ( count(K,nil) = 0 ) )),
    inference(bind,[status(th)],]) ).

tff(100,plain,
    ( ! [K: $int] : ( count(K,nil) = 0 )
  <=> ! [K: $int] : ( count(K,nil) = 0 ) ),
    inference(quant_intro,[status(thm)],[99]) ).

tff(101,plain,
    ( ! [K: $int] : ( count(K,nil) = 0 )
  <=> ! [K: $int] : ( count(K,nil) = 0 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(102,axiom,
    ! [K: $int] : ( count(K,nil) = 0 ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',a) ).

tff(103,plain,
    ! [K: $int] : ( count(K,nil) = 0 ),
    inference(modus_ponens,[status(thm)],[102,101]) ).

tff(104,plain,
    ! [K: $int] : ( count(K,nil) = 0 ),
    inference(skolemize,[status(sab)],[103]) ).

tff(105,plain,
    ! [K: $int] : ( count(K,nil) = 0 ),
    inference(modus_ponens,[status(thm)],[104,100]) ).

tff(106,plain,
    ( ~ ! [K: $int] : ( count(K,nil) = 0 )
    | ( count(0,nil) = 0 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(107,plain,
    count(0,nil) = 0,
    inference(unit_resolution,[status(thm)],[106,105]) ).

tff(108,plain,
    ( ( count(0,nil) != 0 )
    | $lesseq(count(0,nil),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(109,plain,
    $lesseq(count(0,nil),0),
    inference(unit_resolution,[status(thm)],[108,107]) ).

tff(110,plain,
    ( ( count(0,nil) != 0 )
    | $greatereq(count(0,nil),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(111,plain,
    $greatereq(count(0,nil),0),
    inference(unit_resolution,[status(thm)],[110,107]) ).

tff(112,plain,
    length(cons(0,nil)) = count(0,cons(0,nil)),
    inference(theory_lemma,[status(thm)],[111,109,98,96,32,30,25,23]) ).

tff(113,plain,
    count(0,cons(0,nil)) = length(cons(0,nil)),
    inference(symmetry,[status(thm)],[112]) ).

tff(114,plain,
    count(0,cons(0,nil)) = 1,
    inference(transitivity,[status(thm)],[113,53,52]) ).

tff(115,plain,
    ^ [L: list] :
      refl(
        ( ( append(nil,L) = L )
      <=> ( append(nil,L) = L ) )),
    inference(bind,[status(th)],]) ).

tff(116,plain,
    ( ! [L: list] : ( append(nil,L) = L )
  <=> ! [L: list] : ( append(nil,L) = L ) ),
    inference(quant_intro,[status(thm)],[115]) ).

tff(117,plain,
    ( ! [L: list] : ( append(nil,L) = L )
  <=> ! [L: list] : ( append(nil,L) = L ) ),
    inference(rewrite,[status(thm)],]) ).

tff(118,axiom,
    ! [L: list] : ( append(nil,L) = L ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',l_6) ).

tff(119,plain,
    ! [L: list] : ( append(nil,L) = L ),
    inference(modus_ponens,[status(thm)],[118,117]) ).

tff(120,plain,
    ! [L: list] : ( append(nil,L) = L ),
    inference(skolemize,[status(sab)],[119]) ).

tff(121,plain,
    ! [L: list] : ( append(nil,L) = L ),
    inference(modus_ponens,[status(thm)],[120,116]) ).

tff(122,plain,
    ( ~ ! [L: list] : ( append(nil,L) = L )
    | ( append(nil,nil) = nil ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(123,plain,
    append(nil,nil) = nil,
    inference(unit_resolution,[status(thm)],[122,121]) ).

tff(124,plain,
    nil = append(nil,nil),
    inference(symmetry,[status(thm)],[123]) ).

tff(125,plain,
    cons(0,nil) = cons(0,append(nil,nil)),
    inference(monotonicity,[status(thm)],[124]) ).

tff(126,plain,
    cons(0,append(nil,nil)) = cons(0,nil),
    inference(symmetry,[status(thm)],[125]) ).

tff(127,plain,
    ( ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1 ) )
  <=> ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(128,plain,
    ( ( $sum($product(-1,length(nil)),length(cons(-1,nil))) = 1 )
  <=> ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(129,plain,
    $sum(length(cons(-1,nil)),$product(-1,length(nil))) = $sum($product(-1,length(nil)),length(cons(-1,nil))),
    inference(rewrite,[status(thm)],]) ).

tff(130,plain,
    ( ( $sum(length(cons(-1,nil)),$product(-1,length(nil))) = 1 )
  <=> ( $sum($product(-1,length(nil)),length(cons(-1,nil))) = 1 ) ),
    inference(monotonicity,[status(thm)],[129]) ).

tff(131,plain,
    ( ( $sum(length(cons(-1,nil)),$product(-1,length(nil))) = 1 )
  <=> ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1 ) ),
    inference(transitivity,[status(thm)],[130,128]) ).

tff(132,plain,
    ( ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(cons(-1,nil)),$product(-1,length(nil))) = 1 ) )
  <=> ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1 ) ) ),
    inference(monotonicity,[status(thm)],[131]) ).

tff(133,plain,
    ( ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(cons(-1,nil)),$product(-1,length(nil))) = 1 ) )
  <=> ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
      | ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1 ) ) ),
    inference(transitivity,[status(thm)],[132,127]) ).

tff(134,plain,
    ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
    | ( $sum(length(cons(-1,nil)),$product(-1,length(nil))) = 1 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(135,plain,
    ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
    | ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1 ) ),
    inference(modus_ponens,[status(thm)],[134,133]) ).

tff(136,plain,
    $sum(length(nil),$product(-1,length(cons(-1,nil)))) = -1,
    inference(unit_resolution,[status(thm)],[135,11]) ).

tff(137,plain,
    ( ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) != -1 )
    | $lesseq($sum(length(nil),$product(-1,length(cons(-1,nil)))),-1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(138,plain,
    $lesseq($sum(length(nil),$product(-1,length(cons(-1,nil)))),-1),
    inference(unit_resolution,[status(thm)],[137,136]) ).

tff(139,plain,
    length(append(nil,nil)) = length(nil),
    inference(monotonicity,[status(thm)],[123]) ).

tff(140,plain,
    length(nil) = length(append(nil,nil)),
    inference(symmetry,[status(thm)],[139]) ).

tff(141,plain,
    ( ( length(nil) != length(append(nil,nil)) )
    | $greatereq($sum(length(nil),$product(-1,length(append(nil,nil)))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(142,plain,
    $greatereq($sum(length(nil),$product(-1,length(append(nil,nil)))),0),
    inference(unit_resolution,[status(thm)],[141,140]) ).

tff(143,plain,
    ( ~ ! [H: $int,T: list] : ( $sum(length(cons(H,T)),$product(-1,length(T))) = 1 )
    | ( $sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))) = 1 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(144,plain,
    $sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))) = 1,
    inference(unit_resolution,[status(thm)],[143,11]) ).

tff(145,plain,
    ( ( $sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))) != 1 )
    | $lesseq($sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))),1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(146,plain,
    $lesseq($sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))),1),
    inference(unit_resolution,[status(thm)],[145,144]) ).

tff(147,plain,
    ( $greatereq($sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))),0)
    | ~ $lesseq($sum(length(nil),$product(-1,length(cons(-1,nil)))),-1)
    | ~ $greatereq($sum(length(nil),$product(-1,length(append(nil,nil)))),0)
    | ~ $lesseq($sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))),1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(148,plain,
    $greatereq($sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))),0),
    inference(unit_resolution,[status(thm)],[147,146,142,138]) ).

tff(149,plain,
    ( ( $sum(length(nil),$product(-1,length(cons(-1,nil)))) != -1 )
    | $greatereq($sum(length(nil),$product(-1,length(cons(-1,nil)))),-1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(150,plain,
    $greatereq($sum(length(nil),$product(-1,length(cons(-1,nil)))),-1),
    inference(unit_resolution,[status(thm)],[149,136]) ).

tff(151,plain,
    ( ( length(nil) != length(append(nil,nil)) )
    | $lesseq($sum(length(nil),$product(-1,length(append(nil,nil)))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(152,plain,
    $lesseq($sum(length(nil),$product(-1,length(append(nil,nil)))),0),
    inference(unit_resolution,[status(thm)],[151,140]) ).

tff(153,plain,
    ( ( $sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))) != 1 )
    | $greatereq($sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))),1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(154,plain,
    $greatereq($sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))),1),
    inference(unit_resolution,[status(thm)],[153,144]) ).

tff(155,plain,
    ( $lesseq($sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))),0)
    | ~ $greatereq($sum(length(nil),$product(-1,length(cons(-1,nil)))),-1)
    | ~ $lesseq($sum(length(nil),$product(-1,length(append(nil,nil)))),0)
    | ~ $greatereq($sum(length(cons(0,append(nil,nil))),$product(-1,length(append(nil,nil)))),1) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(156,plain,
    $lesseq($sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))),0),
    inference(unit_resolution,[status(thm)],[155,154,152,150]) ).

tff(157,plain,
    ( ( $sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))) = 0 )
    | ~ $lesseq($sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))),0)
    | ~ $greatereq($sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(158,plain,
    $sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))) = 0,
    inference(unit_resolution,[status(thm)],[157,156,148]) ).

tff(159,plain,
    ^ [L1: list,L2: list] :
      refl(
        ( ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
          | ( L1 = L2 ) )
      <=> ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
          | ( L1 = L2 ) ) )),
    inference(bind,[status(th)],]) ).

tff(160,plain,
    ( ! [L1: list,L2: list] :
        ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
        | ( L1 = L2 ) )
  <=> ! [L1: list,L2: list] :
        ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
        | ( L1 = L2 ) ) ),
    inference(quant_intro,[status(thm)],[159]) ).

tff(161,plain,
    ^ [L1: list,L2: list] :
      rewrite(
        ( ( ( $sum(length(L1),$product(-1,length(L2))) != 0 )
          | ( L1 = L2 ) )
      <=> ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
          | ( L1 = L2 ) ) )),
    inference(bind,[status(th)],]) ).

tff(162,plain,
    ( ! [L1: list,L2: list] :
        ( ( $sum(length(L1),$product(-1,length(L2))) != 0 )
        | ( L1 = L2 ) )
  <=> ! [L1: list,L2: list] :
        ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
        | ( L1 = L2 ) ) ),
    inference(quant_intro,[status(thm)],[161]) ).

tff(163,plain,
    ^ [L1: list,L2: list] :
      rewrite(
        ( ( ( length(L1) != length(L2) )
          | ( L1 = L2 ) )
      <=> ( ( $sum(length(L1),$product(-1,length(L2))) != 0 )
          | ( L1 = L2 ) ) )),
    inference(bind,[status(th)],]) ).

tff(164,plain,
    ( ! [L1: list,L2: list] :
        ( ( length(L1) != length(L2) )
        | ( L1 = L2 ) )
  <=> ! [L1: list,L2: list] :
        ( ( $sum(length(L1),$product(-1,length(L2))) != 0 )
        | ( L1 = L2 ) ) ),
    inference(quant_intro,[status(thm)],[163]) ).

tff(165,plain,
    ( ! [L1: list,L2: list] :
        ( ( length(L1) != length(L2) )
        | ( L1 = L2 ) )
  <=> ! [L1: list,L2: list] :
        ( ( length(L1) != length(L2) )
        | ( L1 = L2 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(166,plain,
    ( ~ ~ ! [L1: list,L2: list] :
            ( ( length(L1) != length(L2) )
            | ( L1 = L2 ) )
  <=> ! [L1: list,L2: list] :
        ( ( length(L1) != length(L2) )
        | ( L1 = L2 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(167,plain,
    ( ~ ! [L1: list,L2: list] :
          ( ( length(L1) = length(L2) )
         => ( L1 = L2 ) )
  <=> ~ ! [L1: list,L2: list] :
          ( ( length(L1) != length(L2) )
          | ( L1 = L2 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(168,plain,
    ( ~ ~ ! [L1: list,L2: list] :
            ( ( length(L1) = length(L2) )
           => ( L1 = L2 ) )
  <=> ~ ~ ! [L1: list,L2: list] :
            ( ( length(L1) != length(L2) )
            | ( L1 = L2 ) ) ),
    inference(monotonicity,[status(thm)],[167]) ).

tff(169,plain,
    ( ~ ~ ! [L1: list,L2: list] :
            ( ( length(L1) = length(L2) )
           => ( L1 = L2 ) )
  <=> ! [L1: list,L2: list] :
        ( ( length(L1) != length(L2) )
        | ( L1 = L2 ) ) ),
    inference(transitivity,[status(thm)],[168,166]) ).

tff(170,axiom,
    ~ ~ ! [L1: list,L2: list] :
          ( ( length(L1) = length(L2) )
         => ( L1 = L2 ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',c) ).

tff(171,plain,
    ! [L1: list,L2: list] :
      ( ( length(L1) != length(L2) )
      | ( L1 = L2 ) ),
    inference(modus_ponens,[status(thm)],[170,169]) ).

tff(172,plain,
    ! [L1: list,L2: list] :
      ( ( length(L1) != length(L2) )
      | ( L1 = L2 ) ),
    inference(modus_ponens,[status(thm)],[171,165]) ).

tff(173,plain,
    ! [L1: list,L2: list] :
      ( ( $sum(length(L1),$product(-1,length(L2))) != 0 )
      | ( L1 = L2 ) ),
    inference(modus_ponens,[status(thm)],[172,164]) ).

tff(174,plain,
    ! [L1: list,L2: list] :
      ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
      | ( L1 = L2 ) ),
    inference(modus_ponens,[status(thm)],[173,162]) ).

tff(175,plain,
    ! [L1: list,L2: list] :
      ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
      | ( L1 = L2 ) ),
    inference(skolemize,[status(sab)],[174]) ).

tff(176,plain,
    ! [L1: list,L2: list] :
      ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
      | ( L1 = L2 ) ),
    inference(modus_ponens,[status(thm)],[175,160]) ).

tff(177,plain,
    ( ( ~ ! [L1: list,L2: list] :
            ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
            | ( L1 = L2 ) )
      | ( $sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))) != 0 )
      | ( cons(0,append(nil,nil)) = cons(-1,nil) ) )
  <=> ( ~ ! [L1: list,L2: list] :
            ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
            | ( L1 = L2 ) )
      | ( $sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))) != 0 )
      | ( cons(0,append(nil,nil)) = cons(-1,nil) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(178,plain,
    ( ~ ! [L1: list,L2: list] :
          ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
          | ( L1 = L2 ) )
    | ( $sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))) != 0 )
    | ( cons(0,append(nil,nil)) = cons(-1,nil) ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(179,plain,
    ( ~ ! [L1: list,L2: list] :
          ( ( $sum(length(L2),$product(-1,length(L1))) != 0 )
          | ( L1 = L2 ) )
    | ( $sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))) != 0 )
    | ( cons(0,append(nil,nil)) = cons(-1,nil) ) ),
    inference(modus_ponens,[status(thm)],[178,177]) ).

tff(180,plain,
    ( ( $sum(length(cons(-1,nil)),$product(-1,length(cons(0,append(nil,nil))))) != 0 )
    | ( cons(0,append(nil,nil)) = cons(-1,nil) ) ),
    inference(unit_resolution,[status(thm)],[179,176]) ).

tff(181,plain,
    cons(0,append(nil,nil)) = cons(-1,nil),
    inference(unit_resolution,[status(thm)],[180,158]) ).

tff(182,plain,
    cons(-1,nil) = cons(0,append(nil,nil)),
    inference(symmetry,[status(thm)],[181]) ).

tff(183,plain,
    cons(-1,nil) = cons(0,nil),
    inference(transitivity,[status(thm)],[182,126]) ).

tff(184,plain,
    count(0,cons(-1,nil)) = count(0,cons(0,nil)),
    inference(monotonicity,[status(thm)],[183]) ).

tff(185,plain,
    ^ [K: $int,H: $int,T: list] :
      refl(
        ( ( ( $sum(H,$product(-1,K)) = 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      <=> ( ( $sum(H,$product(-1,K)) = 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ) )),
    inference(bind,[status(th)],]) ).

tff(186,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( $sum(H,$product(-1,K)) = 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( $sum(H,$product(-1,K)) = 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ) ),
    inference(quant_intro,[status(thm)],[185]) ).

tff(187,plain,
    ^ [K: $int,H: $int,T: list] :
      rewrite(
        ( ( ( $sum(K,$product(-1,H)) = 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      <=> ( ( $sum(H,$product(-1,K)) = 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ) )),
    inference(bind,[status(th)],]) ).

tff(188,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( $sum(K,$product(-1,H)) = 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( $sum(H,$product(-1,K)) = 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ) ),
    inference(quant_intro,[status(thm)],[187]) ).

tff(189,plain,
    ^ [K: $int,H: $int,T: list] :
      rewrite(
        ( ( ( K = H )
          | ( count(K,cons(H,T)) = count(K,T) ) )
      <=> ( ( $sum(K,$product(-1,H)) = 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ) )),
    inference(bind,[status(th)],]) ).

tff(190,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( K = H )
        | ( count(K,cons(H,T)) = count(K,T) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( $sum(K,$product(-1,H)) = 0 )
        | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ) ),
    inference(quant_intro,[status(thm)],[189]) ).

tff(191,plain,
    ( ! [K: $int,H: $int,T: list] :
        ( ( K = H )
        | ( count(K,cons(H,T)) = count(K,T) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( K = H )
        | ( count(K,cons(H,T)) = count(K,T) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(192,plain,
    ( ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K = H )
        | ( count(K,cons(H,T)) = count(K,T) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( K = H )
        | ( count(K,cons(H,T)) = count(K,T) ) ) ),
    inference(elim_unused_vars,[status(thm)],]) ).

tff(193,plain,
    ^ [K: $int,H: $int,T: list,N: $int] :
      rewrite(
        ( ( ( K != H )
         => ( count(K,cons(H,T)) = count(K,T) ) )
      <=> ( ( K = H )
          | ( count(K,cons(H,T)) = count(K,T) ) ) )),
    inference(bind,[status(th)],]) ).

tff(194,plain,
    ( ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K != H )
       => ( count(K,cons(H,T)) = count(K,T) ) )
  <=> ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K = H )
        | ( count(K,cons(H,T)) = count(K,T) ) ) ),
    inference(quant_intro,[status(thm)],[193]) ).

tff(195,plain,
    ( ! [K: $int,H: $int,T: list,N: $int] :
        ( ( K != H )
       => ( count(K,cons(H,T)) = count(K,T) ) )
  <=> ! [K: $int,H: $int,T: list] :
        ( ( K = H )
        | ( count(K,cons(H,T)) = count(K,T) ) ) ),
    inference(transitivity,[status(thm)],[194,192]) ).

tff(196,axiom,
    ! [K: $int,H: $int,T: list,N: $int] :
      ( ( K != H )
     => ( count(K,cons(H,T)) = count(K,T) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',a_3) ).

tff(197,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( K = H )
      | ( count(K,cons(H,T)) = count(K,T) ) ),
    inference(modus_ponens,[status(thm)],[196,195]) ).

tff(198,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( K = H )
      | ( count(K,cons(H,T)) = count(K,T) ) ),
    inference(modus_ponens,[status(thm)],[197,191]) ).

tff(199,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(K,$product(-1,H)) = 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ),
    inference(modus_ponens,[status(thm)],[198,190]) ).

tff(200,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(H,$product(-1,K)) = 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ),
    inference(modus_ponens,[status(thm)],[199,188]) ).

tff(201,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(H,$product(-1,K)) = 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ),
    inference(skolemize,[status(sab)],[200]) ).

tff(202,plain,
    ! [K: $int,H: $int,T: list] :
      ( ( $sum(H,$product(-1,K)) = 0 )
      | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) ),
    inference(modus_ponens,[status(thm)],[201,186]) ).

tff(203,plain,
    ( ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) = 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) )
  <=> ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) = 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(204,plain,
    ( ( $false
      | ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(205,plain,
    ( ( $sum($product(-1,count(0,nil)),count(0,cons(-1,nil))) = 0 )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(206,plain,
    $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = $sum($product(-1,count(0,nil)),count(0,cons(-1,nil))),
    inference(rewrite,[status(thm)],]) ).

tff(207,plain,
    ( ( $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = 0 )
  <=> ( $sum($product(-1,count(0,nil)),count(0,cons(-1,nil))) = 0 ) ),
    inference(monotonicity,[status(thm)],[206]) ).

tff(208,plain,
    ( ( $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = 0 )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ),
    inference(transitivity,[status(thm)],[207,205]) ).

tff(209,plain,
    ( ( -1 = 0 )
  <=> $false ),
    inference(rewrite,[status(thm)],]) ).

tff(210,plain,
    $sum(-1,0) = -1,
    inference(rewrite,[status(thm)],]) ).

tff(211,plain,
    $sum(-1,$product(-1,0)) = $sum(-1,0),
    inference(monotonicity,[status(thm)],[81]) ).

tff(212,plain,
    $sum(-1,$product(-1,0)) = -1,
    inference(transitivity,[status(thm)],[211,210]) ).

tff(213,plain,
    ( ( $sum(-1,$product(-1,0)) = 0 )
  <=> ( -1 = 0 ) ),
    inference(monotonicity,[status(thm)],[212]) ).

tff(214,plain,
    ( ( $sum(-1,$product(-1,0)) = 0 )
  <=> $false ),
    inference(transitivity,[status(thm)],[213,209]) ).

tff(215,plain,
    ( ( ( $sum(-1,$product(-1,0)) = 0 )
      | ( $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = 0 ) )
  <=> ( $false
      | ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ) ),
    inference(monotonicity,[status(thm)],[214,208]) ).

tff(216,plain,
    ( ( ( $sum(-1,$product(-1,0)) = 0 )
      | ( $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = 0 ) )
  <=> ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ),
    inference(transitivity,[status(thm)],[215,204]) ).

tff(217,plain,
    ( ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) = 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      | ( $sum(-1,$product(-1,0)) = 0 )
      | ( $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = 0 ) )
  <=> ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) = 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ) ),
    inference(monotonicity,[status(thm)],[216]) ).

tff(218,plain,
    ( ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) = 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      | ( $sum(-1,$product(-1,0)) = 0 )
      | ( $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = 0 ) )
  <=> ( ~ ! [K: $int,H: $int,T: list] :
            ( ( $sum(H,$product(-1,K)) = 0 )
            | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
      | ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ) ),
    inference(transitivity,[status(thm)],[217,203]) ).

tff(219,plain,
    ( ~ ! [K: $int,H: $int,T: list] :
          ( ( $sum(H,$product(-1,K)) = 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
    | ( $sum(-1,$product(-1,0)) = 0 )
    | ( $sum(count(0,cons(-1,nil)),$product(-1,count(0,nil))) = 0 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(220,plain,
    ( ~ ! [K: $int,H: $int,T: list] :
          ( ( $sum(H,$product(-1,K)) = 0 )
          | ( $sum(count(K,cons(H,T)),$product(-1,count(K,T))) = 0 ) )
    | ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0 ) ),
    inference(modus_ponens,[status(thm)],[219,218]) ).

tff(221,plain,
    $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) = 0,
    inference(unit_resolution,[status(thm)],[220,202]) ).

tff(222,plain,
    ( ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) != 0 )
    | $lesseq($sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(223,plain,
    $lesseq($sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))),0),
    inference(unit_resolution,[status(thm)],[222,221]) ).

tff(224,plain,
    ( ( $sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))) != 0 )
    | $greatereq($sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(225,plain,
    $greatereq($sum(count(0,nil),$product(-1,count(0,cons(-1,nil)))),0),
    inference(unit_resolution,[status(thm)],[224,221]) ).

tff(226,plain,
    count(0,cons(-1,nil)) = 0,
    inference(theory_lemma,[status(thm)],[111,109,225,223]) ).

tff(227,plain,
    0 = count(0,cons(-1,nil)),
    inference(symmetry,[status(thm)],[226]) ).

tff(228,plain,
    0 = 1,
    inference(transitivity,[status(thm)],[227,184,114]) ).

tff(229,plain,
    $false,
    inference(modus_ponens,[status(thm)],[228,1]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.10/0.11  % Problem  : DAT085_1 : TPTP v8.1.0. Released v6.1.0.
% 0.10/0.11  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.11/0.32  % Computer : n025.cluster.edu
% 0.11/0.32  % Model    : x86_64 x86_64
% 0.11/0.32  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.32  % Memory   : 8042.1875MB
% 0.11/0.32  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.11/0.32  % CPULimit : 300
% 0.11/0.32  % WCLimit  : 300
% 0.11/0.32  % DateTime : Wed Aug 31 01:59:30 EDT 2022
% 0.11/0.32  % CPUTime  : 
% 0.11/0.32  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.11/0.32  Usage: tptp [options] [-file:]file
% 0.11/0.32    -h, -?       prints this message.
% 0.11/0.32    -smt2        print SMT-LIB2 benchmark.
% 0.11/0.32    -m, -model   generate model.
% 0.11/0.32    -p, -proof   generate proof.
% 0.11/0.32    -c, -core    generate unsat core of named formulas.
% 0.11/0.32    -st, -statistics display statistics.
% 0.11/0.32    -t:timeout   set timeout (in second).
% 0.11/0.32    -smt2status  display status in smt2 format instead of SZS.
% 0.11/0.32    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.11/0.32    -<param>:<value> configuration parameter and value.
% 0.11/0.32    -o:<output-file> file to place output in.
% 0.11/0.39  % SZS status Theorem
% 0.11/0.39  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------