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Drodi---4.1.1.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : Drodi---4.1.1
% Problem  : SEU208+2 : TPTP v9.3.1. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p

% Computer : n007.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Thu Sep 24 02:19:40 PM UTC 2026

% Result   : Theorem 0.25s 0.74s
% Output   : CNFRefutation 0.25s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   13
%            Number of leaves      :   93
% Syntax   : Number of formulae    :  377 (  56 unt;  58 def)
%            Number of atoms       : 1124 ( 199 equ)
%            Maximal formula atoms :   16 (   2 avg)
%            Number of connectives : 1269 ( 522   ~; 539   |; 108   &)
%                                         (  79 <=>;  20  =>;   0  <=;   1 <~>)
%            Maximal formula depth :   14 (   4 avg)
%            Maximal term depth    :    5 (   1 avg)
%            Number of predicates  :   64 (  62 usr;  59 prp; 0-2 aty)
%            Number of functors    :   32 (  32 usr;   7 con; 0-4 aty)
%            Number of variables   :  455 ( 411   !;  44   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ! [A,B] :
      ( in(A,B)
     => ~ in(B,A) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f5,axiom,
    ! [A,B] : set_union2(A,B) = set_union2(B,A),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f9,axiom,
    ! [A] :
      ( relation(A)
     => ! [B,C] :
          ( relation(C)
         => ( C = relation_dom_restriction(A,B)
          <=> ! [D,E] :
                ( in(ordered_pair(D,E),C)
              <=> ( in(ordered_pair(D,E),A)
                  & in(D,B) ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f10,axiom,
    ! [A,B] :
      ( relation(B)
     => ! [C] :
          ( relation(C)
         => ( C = relation_rng_restriction(A,B)
          <=> ! [D,E] :
                ( in(ordered_pair(D,E),C)
              <=> ( in(ordered_pair(D,E),B)
                  & in(E,A) ) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f12,axiom,
    ! [A] :
      ( relation(A)
     => ! [B,C] :
          ( C = relation_inverse_image(A,B)
        <=> ! [D] :
              ( in(D,C)
            <=> ? [E] :
                  ( in(E,B)
                  & in(ordered_pair(D,E),A) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f15,axiom,
    ! [A,B] :
      ( B = singleton(A)
    <=> ! [C] :
          ( in(C,B)
        <=> C = A ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f16,axiom,
    ! [A] :
      ( A = empty_set
    <=> ! [B] : ~ in(B,A) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f30,axiom,
    ! [A] :
      ( relation(A)
     => ! [B] :
          ( B = relation_rng(A)
        <=> ! [C] :
              ( in(C,B)
            <=> ? [D] : in(ordered_pair(D,C),A) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f54,axiom,
    ! [A] :
      ( relation(A)
     => relation(relation_inverse(A)) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f59,axiom,
    ! [A] : relation(identity_relation(A)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f71,axiom,
    empty(empty_set),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f78,axiom,
    ( relation(empty_set)
    & empty(empty_set) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f81,axiom,
    ! [A] :
      ( ( relation(A)
        & ~ empty(A) )
     => ~ empty(relation_rng(A)) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f82,axiom,
    ! [A] :
      ( empty(A)
     => ( relation(relation_dom(A))
        & empty(relation_dom(A)) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f83,axiom,
    ! [A] :
      ( empty(A)
     => ( relation(relation_rng(A))
        & empty(relation_rng(A)) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f86,axiom,
    ! [A,B] : set_intersection2(A,A) = A,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f88,axiom,
    ! [A] :
      ( relation(A)
     => relation_inverse(relation_inverse(A)) = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f91,lemma,
    ! [A] : singleton(A) != empty_set,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f103,axiom,
    ? [A] :
      ( relation(A)
      & empty(A) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f106,axiom,
    ? [A] :
      ( relation(A)
      & ~ empty(A) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f131,conjecture,
    ! [A,B,C] :
      ( relation(C)
     => ( in(A,relation_inverse_image(C,B))
      <=> ? [D] :
            ( in(D,B)
            & in(ordered_pair(A,D),C)
            & in(D,relation_rng(C)) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f132,negated_conjecture,
    ~ ! [A,B,C] :
        ( relation(C)
       => ( in(A,relation_inverse_image(C,B))
        <=> ? [D] :
              ( in(D,B)
              & in(ordered_pair(A,D),C)
              & in(D,relation_rng(C)) ) ) ),
    inference(negated_conjecture,[status(cth)],[f131]) ).

fof(f133,lemma,
    ! [A,B] : subset(set_intersection2(A,B),A),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f135,axiom,
    ! [A] : set_union2(A,empty_set) = A,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f138,lemma,
    powerset(empty_set) = singleton(empty_set),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f141,lemma,
    ! [A] :
      ( relation(A)
     => ! [B] :
          ( relation(B)
         => ( subset(A,B)
           => ( subset(relation_rng(A),relation_rng(B))
              & subset(relation_dom(A),relation_dom(B)) ) ) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f144,axiom,
    ! [A] : set_intersection2(A,empty_set) = empty_set,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f147,lemma,
    ! [A] : subset(empty_set,A),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f151,lemma,
    ! [A,B] : subset(set_difference(A,B),A),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f174,axiom,
    ! [A] : set_difference(empty_set,A) = empty_set,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f181,lemma,
    ( relation_rng(empty_set) = empty_set
    & relation_dom(empty_set) = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f184,lemma,
    ! [A] :
      ( relation(A)
     => ( ( relation_rng(A) = empty_set
          | relation_dom(A) = empty_set )
       => A = empty_set ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f188,axiom,
    ! [A] :
      ( empty(A)
     => A = empty_set ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f190,lemma,
    ! [A] :
      ( relation_rng(identity_relation(A)) = A
      & relation_dom(identity_relation(A)) = A ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f192,axiom,
    ! [A,B] :
      ~ ( empty(B)
        & in(A,B) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f193,lemma,
    ! [A,B] : subset(A,set_union2(A,B)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f207,plain,
    ! [A,B] :
      ( ~ in(B,A)
      | ~ in(A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f1]) ).

fof(f208,plain,
    ! [X0,X1] :
      ( ~ in(X1,X0)
      | ~ in(X0,X1) ),
    inference(cnf_transformation,[status(thm)],[f207]) ).

fof(f214,plain,
    ! [X0,X1] : set_union2(X0,X1) = set_union2(X1,X0),
    inference(cnf_transformation,[status(thm)],[f5]) ).

fof(f231,plain,
    ! [A] :
      ( ! [B,C] :
          ( ( C = relation_dom_restriction(A,B)
          <=> ! [D,E] :
                ( in(ordered_pair(D,E),C)
              <=> ( in(ordered_pair(D,E),A)
                  & in(D,B) ) ) )
          | ~ relation(C) )
      | ~ relation(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f9]) ).

fof(f232,plain,
    ! [A] :
      ( ! [B,C] :
          ( ( ( ? [D,E] :
                  ( ( ( in(ordered_pair(D,E),A)
                      & in(D,B) )
                    | in(ordered_pair(D,E),C) )
                  & ( ~ in(ordered_pair(D,E),A)
                    | ~ in(D,B)
                    | ~ in(ordered_pair(D,E),C) ) )
              | C = relation_dom_restriction(A,B) )
            & ( ! [D,E] :
                  ( ( ~ in(ordered_pair(D,E),A)
                    | ~ in(D,B)
                    | in(ordered_pair(D,E),C) )
                  & ( ( in(ordered_pair(D,E),A)
                      & in(D,B) )
                    | ~ in(ordered_pair(D,E),C) ) )
              | C != relation_dom_restriction(A,B) ) )
          | ~ relation(C) )
      | ~ relation(A) ),
    inference(NNF_transformation,[status(thm)],[f231]) ).

fof(f233,plain,
    ! [A] :
      ( ! [C] :
          ( ( ! [B] :
                ( ? [D,E] :
                    ( ( ( in(ordered_pair(D,E),A)
                        & in(D,B) )
                      | in(ordered_pair(D,E),C) )
                    & ( ~ in(ordered_pair(D,E),A)
                      | ~ in(D,B)
                      | ~ in(ordered_pair(D,E),C) ) )
                | C = relation_dom_restriction(A,B) )
            & ! [B] :
                ( ( ! [D,E] :
                      ( ~ in(ordered_pair(D,E),A)
                      | ~ in(D,B)
                      | in(ordered_pair(D,E),C) )
                  & ! [D,E] :
                      ( ( in(ordered_pair(D,E),A)
                        & in(D,B) )
                      | ~ in(ordered_pair(D,E),C) ) )
                | C != relation_dom_restriction(A,B) ) )
          | ~ relation(C) )
      | ~ relation(A) ),
    inference(miniscoping,[status(thm)],[f232]) ).

fof(f234,plain,
    ! [A] :
      ( ! [C] :
          ( ( ! [B] :
                ( ( ( ( in(ordered_pair(sK2_skl(B,C,A),sK3_skl(B,C,A)),A)
                      & in(sK2_skl(B,C,A),B) )
                    | in(ordered_pair(sK2_skl(B,C,A),sK3_skl(B,C,A)),C) )
                  & ( ~ in(ordered_pair(sK2_skl(B,C,A),sK3_skl(B,C,A)),A)
                    | ~ in(sK2_skl(B,C,A),B)
                    | ~ in(ordered_pair(sK2_skl(B,C,A),sK3_skl(B,C,A)),C) ) )
                | C = relation_dom_restriction(A,B) )
            & ! [B] :
                ( ( ! [D,E] :
                      ( ~ in(ordered_pair(D,E),A)
                      | ~ in(D,B)
                      | in(ordered_pair(D,E),C) )
                  & ! [D,E] :
                      ( ( in(ordered_pair(D,E),A)
                        & in(D,B) )
                      | ~ in(ordered_pair(D,E),C) ) )
                | C != relation_dom_restriction(A,B) ) )
          | ~ relation(C) )
      | ~ relation(A) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK2_skl,sK3_skl]),skolemize(D,sK2_skl(B,C,A)),skolemize(E,sK3_skl(B,C,A))],[f233]) ).

fof(f238,plain,
    ! [X0,X1,X2] :
      ( ~ in(ordered_pair(sK2_skl(X2,X1,X0),sK3_skl(X2,X1,X0)),X0)
      | ~ in(sK2_skl(X2,X1,X0),X2)
      | ~ in(ordered_pair(sK2_skl(X2,X1,X0),sK3_skl(X2,X1,X0)),X1)
      | X1 = relation_dom_restriction(X0,X2)
      | ~ relation(X1)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f234]) ).

fof(f240,plain,
    ! [X0,X1,X2] :
      ( in(ordered_pair(sK2_skl(X2,X1,X0),sK3_skl(X2,X1,X0)),X0)
      | in(ordered_pair(sK2_skl(X2,X1,X0),sK3_skl(X2,X1,X0)),X1)
      | X1 = relation_dom_restriction(X0,X2)
      | ~ relation(X1)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f234]) ).

fof(f241,plain,
    ! [A,B] :
      ( ! [C] :
          ( ( C = relation_rng_restriction(A,B)
          <=> ! [D,E] :
                ( in(ordered_pair(D,E),C)
              <=> ( in(ordered_pair(D,E),B)
                  & in(E,A) ) ) )
          | ~ relation(C) )
      | ~ relation(B) ),
    inference(pre_NNF_transformation,[status(thm)],[f10]) ).

fof(f242,plain,
    ! [A,B] :
      ( ! [C] :
          ( ( ( ? [D,E] :
                  ( ( ( in(ordered_pair(D,E),B)
                      & in(E,A) )
                    | in(ordered_pair(D,E),C) )
                  & ( ~ in(ordered_pair(D,E),B)
                    | ~ in(E,A)
                    | ~ in(ordered_pair(D,E),C) ) )
              | C = relation_rng_restriction(A,B) )
            & ( ! [D,E] :
                  ( ( ~ in(ordered_pair(D,E),B)
                    | ~ in(E,A)
                    | in(ordered_pair(D,E),C) )
                  & ( ( in(ordered_pair(D,E),B)
                      & in(E,A) )
                    | ~ in(ordered_pair(D,E),C) ) )
              | C != relation_rng_restriction(A,B) ) )
          | ~ relation(C) )
      | ~ relation(B) ),
    inference(NNF_transformation,[status(thm)],[f241]) ).

fof(f243,plain,
    ! [B] :
      ( ! [C] :
          ( ( ! [A] :
                ( ? [D,E] :
                    ( ( ( in(ordered_pair(D,E),B)
                        & in(E,A) )
                      | in(ordered_pair(D,E),C) )
                    & ( ~ in(ordered_pair(D,E),B)
                      | ~ in(E,A)
                      | ~ in(ordered_pair(D,E),C) ) )
                | C = relation_rng_restriction(A,B) )
            & ! [A] :
                ( ( ! [D,E] :
                      ( ~ in(ordered_pair(D,E),B)
                      | ~ in(E,A)
                      | in(ordered_pair(D,E),C) )
                  & ! [D,E] :
                      ( ( in(ordered_pair(D,E),B)
                        & in(E,A) )
                      | ~ in(ordered_pair(D,E),C) ) )
                | C != relation_rng_restriction(A,B) ) )
          | ~ relation(C) )
      | ~ relation(B) ),
    inference(miniscoping,[status(thm)],[f242]) ).

fof(f244,plain,
    ! [B] :
      ( ! [C] :
          ( ( ! [A] :
                ( ( ( ( in(ordered_pair(sK4_skl(A,C,B),sK5_skl(A,C,B)),B)
                      & in(sK5_skl(A,C,B),A) )
                    | in(ordered_pair(sK4_skl(A,C,B),sK5_skl(A,C,B)),C) )
                  & ( ~ in(ordered_pair(sK4_skl(A,C,B),sK5_skl(A,C,B)),B)
                    | ~ in(sK5_skl(A,C,B),A)
                    | ~ in(ordered_pair(sK4_skl(A,C,B),sK5_skl(A,C,B)),C) ) )
                | C = relation_rng_restriction(A,B) )
            & ! [A] :
                ( ( ! [D,E] :
                      ( ~ in(ordered_pair(D,E),B)
                      | ~ in(E,A)
                      | in(ordered_pair(D,E),C) )
                  & ! [D,E] :
                      ( ( in(ordered_pair(D,E),B)
                        & in(E,A) )
                      | ~ in(ordered_pair(D,E),C) ) )
                | C != relation_rng_restriction(A,B) ) )
          | ~ relation(C) )
      | ~ relation(B) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK4_skl,sK5_skl]),skolemize(D,sK4_skl(A,C,B)),skolemize(E,sK5_skl(A,C,B))],[f243]) ).

fof(f250,plain,
    ! [X0,X1,X2] :
      ( in(ordered_pair(sK4_skl(X2,X1,X0),sK5_skl(X2,X1,X0)),X0)
      | in(ordered_pair(sK4_skl(X2,X1,X0),sK5_skl(X2,X1,X0)),X1)
      | X1 = relation_rng_restriction(X2,X0)
      | ~ relation(X1)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f244]) ).

fof(f261,plain,
    ! [A] :
      ( ! [B,C] :
          ( C = relation_inverse_image(A,B)
        <=> ! [D] :
              ( in(D,C)
            <=> ? [E] :
                  ( in(E,B)
                  & in(ordered_pair(D,E),A) ) ) )
      | ~ relation(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f12]) ).

fof(f262,plain,
    ! [A] :
      ( ! [B,C] :
          ( ( ? [D] :
                ( ( ? [E] :
                      ( in(E,B)
                      & in(ordered_pair(D,E),A) )
                  | in(D,C) )
                & ( ! [E] :
                      ( ~ in(E,B)
                      | ~ in(ordered_pair(D,E),A) )
                  | ~ in(D,C) ) )
            | C = relation_inverse_image(A,B) )
          & ( ! [D] :
                ( ( ! [E] :
                      ( ~ in(E,B)
                      | ~ in(ordered_pair(D,E),A) )
                  | in(D,C) )
                & ( ? [E] :
                      ( in(E,B)
                      & in(ordered_pair(D,E),A) )
                  | ~ in(D,C) ) )
            | C != relation_inverse_image(A,B) ) )
      | ~ relation(A) ),
    inference(NNF_transformation,[status(thm)],[f261]) ).

fof(f263,plain,
    ! [A] :
      ( ( ! [B,C] :
            ( ? [D] :
                ( ( ? [E] :
                      ( in(E,B)
                      & in(ordered_pair(D,E),A) )
                  | in(D,C) )
                & ( ! [E] :
                      ( ~ in(E,B)
                      | ~ in(ordered_pair(D,E),A) )
                  | ~ in(D,C) ) )
            | C = relation_inverse_image(A,B) )
        & ! [B,C] :
            ( ( ! [D] :
                  ( ! [E] :
                      ( ~ in(E,B)
                      | ~ in(ordered_pair(D,E),A) )
                  | in(D,C) )
              & ! [D] :
                  ( ? [E] :
                      ( in(E,B)
                      & in(ordered_pair(D,E),A) )
                  | ~ in(D,C) ) )
            | C != relation_inverse_image(A,B) ) )
      | ~ relation(A) ),
    inference(miniscoping,[status(thm)],[f262]) ).

fof(f264,plain,
    ! [A] :
      ( ( ! [B,C] :
            ( ( ( ( in(sK11_skl(C,B,A),B)
                  & in(ordered_pair(sK10_skl(C,B,A),sK11_skl(C,B,A)),A) )
                | in(sK10_skl(C,B,A),C) )
              & ( ! [E] :
                    ( ~ in(E,B)
                    | ~ in(ordered_pair(sK10_skl(C,B,A),E),A) )
                | ~ in(sK10_skl(C,B,A),C) ) )
            | C = relation_inverse_image(A,B) )
        & ! [B,C] :
            ( ( ! [D] :
                  ( ! [E] :
                      ( ~ in(E,B)
                      | ~ in(ordered_pair(D,E),A) )
                  | in(D,C) )
              & ! [D] :
                  ( ( in(sK9_skl(D,C,B,A),B)
                    & in(ordered_pair(D,sK9_skl(D,C,B,A)),A) )
                  | ~ in(D,C) ) )
            | C != relation_inverse_image(A,B) ) )
      | ~ relation(A) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK9_skl,sK10_skl,sK11_skl]),skolemize(E,sK9_skl(D,C,B,A)),skolemize(D,sK10_skl(C,B,A)),skolemize(E,sK11_skl(C,B,A))],[f263]) ).

fof(f265,plain,
    ! [X0,X1,X2,X3] :
      ( in(ordered_pair(X3,sK9_skl(X3,X1,X2,X0)),X0)
      | ~ in(X3,X1)
      | X1 != relation_inverse_image(X0,X2)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f264]) ).

fof(f266,plain,
    ! [X0,X1,X2,X3] :
      ( in(sK9_skl(X3,X1,X2,X0),X2)
      | ~ in(X3,X1)
      | X1 != relation_inverse_image(X0,X2)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f264]) ).

fof(f267,plain,
    ! [X0,X1,X2,X3,X4] :
      ( ~ in(X4,X2)
      | ~ in(ordered_pair(X3,X4),X0)
      | in(X3,X1)
      | X1 != relation_inverse_image(X0,X2)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f264]) ).

fof(f290,plain,
    ! [A,B] :
      ( ( ? [C] :
            ( ( C = A
              | in(C,B) )
            & ( C != A
              | ~ in(C,B) ) )
        | B = singleton(A) )
      & ( ! [C] :
            ( ( C != A
              | in(C,B) )
            & ( C = A
              | ~ in(C,B) ) )
        | B != singleton(A) ) ),
    inference(NNF_transformation,[status(thm)],[f15]) ).

fof(f291,plain,
    ( ! [A,B] :
        ( ? [C] :
            ( ( C = A
              | in(C,B) )
            & ( C != A
              | ~ in(C,B) ) )
        | B = singleton(A) )
    & ! [A,B] :
        ( ( ! [C] :
              ( C != A
              | in(C,B) )
          & ! [C] :
              ( C = A
              | ~ in(C,B) ) )
        | B != singleton(A) ) ),
    inference(miniscoping,[status(thm)],[f290]) ).

fof(f292,plain,
    ( ! [A,B] :
        ( ( ( sK18_skl(B,A) = A
            | in(sK18_skl(B,A),B) )
          & ( sK18_skl(B,A) != A
            | ~ in(sK18_skl(B,A),B) ) )
        | B = singleton(A) )
    & ! [A,B] :
        ( ( ! [C] :
              ( C != A
              | in(C,B) )
          & ! [C] :
              ( C = A
              | ~ in(C,B) ) )
        | B != singleton(A) ) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK18_skl]),skolemize(C,sK18_skl(B,A))],[f291]) ).

fof(f293,plain,
    ! [X0,X1,X2] :
      ( X2 = X1
      | ~ in(X2,X0)
      | X0 != singleton(X1) ),
    inference(cnf_transformation,[status(thm)],[f292]) ).

fof(f297,plain,
    ! [A] :
      ( ( ? [B] : in(B,A)
        | A = empty_set )
      & ( ! [B] : ~ in(B,A)
        | A != empty_set ) ),
    inference(NNF_transformation,[status(thm)],[f16]) ).

fof(f298,plain,
    ( ! [A] :
        ( ? [B] : in(B,A)
        | A = empty_set )
    & ! [A] :
        ( ! [B] : ~ in(B,A)
        | A != empty_set ) ),
    inference(miniscoping,[status(thm)],[f297]) ).

fof(f299,plain,
    ( ! [A] :
        ( in(sK19_skl(A),A)
        | A = empty_set )
    & ! [A] :
        ( ! [B] : ~ in(B,A)
        | A != empty_set ) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK19_skl]),skolemize(B,sK19_skl(A))],[f298]) ).

fof(f301,plain,
    ! [X0] :
      ( in(sK19_skl(X0),X0)
      | X0 = empty_set ),
    inference(cnf_transformation,[status(thm)],[f299]) ).

fof(f400,plain,
    ! [A] :
      ( ! [B] :
          ( B = relation_rng(A)
        <=> ! [C] :
              ( in(C,B)
            <=> ? [D] : in(ordered_pair(D,C),A) ) )
      | ~ relation(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f30]) ).

fof(f401,plain,
    ! [A] :
      ( ! [B] :
          ( ( ? [C] :
                ( ( ? [D] : in(ordered_pair(D,C),A)
                  | in(C,B) )
                & ( ! [D] : ~ in(ordered_pair(D,C),A)
                  | ~ in(C,B) ) )
            | B = relation_rng(A) )
          & ( ! [C] :
                ( ( ! [D] : ~ in(ordered_pair(D,C),A)
                  | in(C,B) )
                & ( ? [D] : in(ordered_pair(D,C),A)
                  | ~ in(C,B) ) )
            | B != relation_rng(A) ) )
      | ~ relation(A) ),
    inference(NNF_transformation,[status(thm)],[f400]) ).

fof(f402,plain,
    ! [A] :
      ( ( ! [B] :
            ( ? [C] :
                ( ( ? [D] : in(ordered_pair(D,C),A)
                  | in(C,B) )
                & ( ! [D] : ~ in(ordered_pair(D,C),A)
                  | ~ in(C,B) ) )
            | B = relation_rng(A) )
        & ! [B] :
            ( ( ! [C] :
                  ( ! [D] : ~ in(ordered_pair(D,C),A)
                  | in(C,B) )
              & ! [C] :
                  ( ? [D] : in(ordered_pair(D,C),A)
                  | ~ in(C,B) ) )
            | B != relation_rng(A) ) )
      | ~ relation(A) ),
    inference(miniscoping,[status(thm)],[f401]) ).

fof(f403,plain,
    ! [A] :
      ( ( ! [B] :
            ( ( ( in(ordered_pair(sK43_skl(B,A),sK42_skl(B,A)),A)
                | in(sK42_skl(B,A),B) )
              & ( ! [D] : ~ in(ordered_pair(D,sK42_skl(B,A)),A)
                | ~ in(sK42_skl(B,A),B) ) )
            | B = relation_rng(A) )
        & ! [B] :
            ( ( ! [C] :
                  ( ! [D] : ~ in(ordered_pair(D,C),A)
                  | in(C,B) )
              & ! [C] :
                  ( in(ordered_pair(sK41_skl(C,B,A),C),A)
                  | ~ in(C,B) ) )
            | B != relation_rng(A) ) )
      | ~ relation(A) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK41_skl,sK42_skl,sK43_skl]),skolemize(D,sK41_skl(C,B,A)),skolemize(C,sK42_skl(B,A)),skolemize(D,sK43_skl(B,A))],[f402]) ).

fof(f405,plain,
    ! [X0,X1,X2,X3] :
      ( ~ in(ordered_pair(X3,X2),X0)
      | in(X2,X1)
      | X1 != relation_rng(X0)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f403]) ).

fof(f451,plain,
    ! [A] :
      ( relation(relation_inverse(A))
      | ~ relation(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f54]) ).

fof(f452,plain,
    ! [X0] :
      ( relation(relation_inverse(X0))
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f451]) ).

fof(f457,plain,
    ! [X0] : relation(identity_relation(X0)),
    inference(cnf_transformation,[status(thm)],[f59]) ).

fof(f478,plain,
    empty(empty_set),
    inference(cnf_transformation,[status(thm)],[f71]) ).

fof(f491,plain,
    relation(empty_set),
    inference(cnf_transformation,[status(thm)],[f78]) ).

fof(f496,plain,
    ! [A] :
      ( ~ empty(relation_rng(A))
      | ~ relation(A)
      | empty(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f81]) ).

fof(f497,plain,
    ! [X0] :
      ( ~ empty(relation_rng(X0))
      | ~ relation(X0)
      | empty(X0) ),
    inference(cnf_transformation,[status(thm)],[f496]) ).

fof(f498,plain,
    ! [A] :
      ( ( relation(relation_dom(A))
        & empty(relation_dom(A)) )
      | ~ empty(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f82]) ).

fof(f499,plain,
    ! [X0] :
      ( empty(relation_dom(X0))
      | ~ empty(X0) ),
    inference(cnf_transformation,[status(thm)],[f498]) ).

fof(f500,plain,
    ! [X0] :
      ( relation(relation_dom(X0))
      | ~ empty(X0) ),
    inference(cnf_transformation,[status(thm)],[f498]) ).

fof(f501,plain,
    ! [A] :
      ( ( relation(relation_rng(A))
        & empty(relation_rng(A)) )
      | ~ empty(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f83]) ).

fof(f502,plain,
    ! [X0] :
      ( empty(relation_rng(X0))
      | ~ empty(X0) ),
    inference(cnf_transformation,[status(thm)],[f501]) ).

fof(f503,plain,
    ! [X0] :
      ( relation(relation_rng(X0))
      | ~ empty(X0) ),
    inference(cnf_transformation,[status(thm)],[f501]) ).

fof(f509,plain,
    ! [A] : set_intersection2(A,A) = A,
    inference(miniscoping,[status(thm)],[f86]) ).

fof(f510,plain,
    ! [X0] : set_intersection2(X0,X0) = X0,
    inference(cnf_transformation,[status(thm)],[f509]) ).

fof(f513,plain,
    ! [A] :
      ( relation_inverse(relation_inverse(A)) = A
      | ~ relation(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f88]) ).

fof(f514,plain,
    ! [X0] :
      ( relation_inverse(relation_inverse(X0)) = X0
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f513]) ).

fof(f519,plain,
    ! [X0] : singleton(X0) != empty_set,
    inference(cnf_transformation,[status(thm)],[f91]) ).

fof(f555,plain,
    ( relation(sK53_skl)
    & empty(sK53_skl) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK53_skl]),skolemize(A,sK53_skl)],[f103]) ).

fof(f556,plain,
    empty(sK53_skl),
    inference(cnf_transformation,[status(thm)],[f555]) ).

fof(f557,plain,
    relation(sK53_skl),
    inference(cnf_transformation,[status(thm)],[f555]) ).

fof(f564,plain,
    ( relation(sK56_skl)
    & ~ empty(sK56_skl) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK56_skl]),skolemize(A,sK56_skl)],[f106]) ).

fof(f565,plain,
    ~ empty(sK56_skl),
    inference(cnf_transformation,[status(thm)],[f564]) ).

fof(f566,plain,
    relation(sK56_skl),
    inference(cnf_transformation,[status(thm)],[f564]) ).

fof(f644,plain,
    ? [A,B,C] :
      ( ( in(A,relation_inverse_image(C,B))
      <~> ? [D] :
            ( in(D,B)
            & in(ordered_pair(A,D),C)
            & in(D,relation_rng(C)) ) )
      & relation(C) ),
    inference(pre_NNF_transformation,[status(thm)],[f132]) ).

fof(f645,plain,
    ? [A,B,C] :
      ( ( ! [D] :
            ( ~ in(D,B)
            | ~ in(ordered_pair(A,D),C)
            | ~ in(D,relation_rng(C)) )
        | ~ in(A,relation_inverse_image(C,B)) )
      & ( ? [D] :
            ( in(D,B)
            & in(ordered_pair(A,D),C)
            & in(D,relation_rng(C)) )
        | in(A,relation_inverse_image(C,B)) )
      & relation(C) ),
    inference(NNF_transformation,[status(thm)],[f644]) ).

fof(f646,plain,
    ? [C] :
      ( ? [A,B] :
          ( ( ! [D] :
                ( ~ in(D,B)
                | ~ in(ordered_pair(A,D),C)
                | ~ in(D,relation_rng(C)) )
            | ~ in(A,relation_inverse_image(C,B)) )
          & ( ? [D] :
                ( in(D,B)
                & in(ordered_pair(A,D),C)
                & in(D,relation_rng(C)) )
            | in(A,relation_inverse_image(C,B)) ) )
      & relation(C) ),
    inference(miniscoping,[status(thm)],[f645]) ).

fof(f647,plain,
    ( ( ! [D] :
          ( ~ in(D,sK63_skl)
          | ~ in(ordered_pair(sK62_skl,D),sK61_skl)
          | ~ in(D,relation_rng(sK61_skl)) )
      | ~ in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) )
    & ( ( in(sK64_skl,sK63_skl)
        & in(ordered_pair(sK62_skl,sK64_skl),sK61_skl)
        & in(sK64_skl,relation_rng(sK61_skl)) )
      | in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) )
    & relation(sK61_skl) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK61_skl,sK62_skl,sK63_skl,sK64_skl]),skolemize(C,sK61_skl),skolemize(A,sK62_skl),skolemize(B,sK63_skl),skolemize(D,sK64_skl)],[f646]) ).

fof(f648,plain,
    relation(sK61_skl),
    inference(cnf_transformation,[status(thm)],[f647]) ).

fof(f650,plain,
    ( in(ordered_pair(sK62_skl,sK64_skl),sK61_skl)
    | in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) ),
    inference(cnf_transformation,[status(thm)],[f647]) ).

fof(f651,plain,
    ( in(sK64_skl,sK63_skl)
    | in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) ),
    inference(cnf_transformation,[status(thm)],[f647]) ).

fof(f652,plain,
    ! [X0] :
      ( ~ in(X0,sK63_skl)
      | ~ in(ordered_pair(sK62_skl,X0),sK61_skl)
      | ~ in(X0,relation_rng(sK61_skl))
      | ~ in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) ),
    inference(cnf_transformation,[status(thm)],[f647]) ).

fof(f653,plain,
    ! [X0,X1] : subset(set_intersection2(X0,X1),X0),
    inference(cnf_transformation,[status(thm)],[f133]) ).

fof(f656,plain,
    ! [X0] : set_union2(X0,empty_set) = X0,
    inference(cnf_transformation,[status(thm)],[f135]) ).

fof(f662,plain,
    powerset(empty_set) = singleton(empty_set),
    inference(cnf_transformation,[status(thm)],[f138]) ).

fof(f669,plain,
    ! [A] :
      ( ! [B] :
          ( ( subset(relation_rng(A),relation_rng(B))
            & subset(relation_dom(A),relation_dom(B)) )
          | ~ subset(A,B)
          | ~ relation(B) )
      | ~ relation(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f141]) ).

fof(f671,plain,
    ! [X0,X1] :
      ( subset(relation_rng(X0),relation_rng(X1))
      | ~ subset(X0,X1)
      | ~ relation(X1)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f669]) ).

fof(f677,plain,
    ! [X0] : set_intersection2(X0,empty_set) = empty_set,
    inference(cnf_transformation,[status(thm)],[f144]) ).

fof(f685,plain,
    ! [X0] : subset(empty_set,X0),
    inference(cnf_transformation,[status(thm)],[f147]) ).

fof(f696,plain,
    ! [X0,X1] : subset(set_difference(X0,X1),X0),
    inference(cnf_transformation,[status(thm)],[f151]) ).

fof(f756,plain,
    ! [X0] : set_difference(empty_set,X0) = empty_set,
    inference(cnf_transformation,[status(thm)],[f174]) ).

fof(f777,plain,
    relation_rng(empty_set) = empty_set,
    inference(cnf_transformation,[status(thm)],[f181]) ).

fof(f783,plain,
    ! [A] :
      ( A = empty_set
      | ( relation_rng(A) != empty_set
        & relation_dom(A) != empty_set )
      | ~ relation(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f184]) ).

fof(f785,plain,
    ! [X0] :
      ( X0 = empty_set
      | relation_rng(X0) != empty_set
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f783]) ).

fof(f795,plain,
    ! [A] :
      ( A = empty_set
      | ~ empty(A) ),
    inference(pre_NNF_transformation,[status(thm)],[f188]) ).

fof(f796,plain,
    ! [X0] :
      ( X0 = empty_set
      | ~ empty(X0) ),
    inference(cnf_transformation,[status(thm)],[f795]) ).

fof(f799,plain,
    ( ! [A] : relation_rng(identity_relation(A)) = A
    & ! [A] : relation_dom(identity_relation(A)) = A ),
    inference(miniscoping,[status(thm)],[f190]) ).

fof(f801,plain,
    ! [X0] : relation_rng(identity_relation(X0)) = X0,
    inference(cnf_transformation,[status(thm)],[f799]) ).

fof(f808,plain,
    ! [A,B] :
      ( ~ empty(B)
      | ~ in(A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f192]) ).

fof(f809,plain,
    ! [B] :
      ( ~ empty(B)
      | ! [A] : ~ in(A,B) ),
    inference(miniscoping,[status(thm)],[f808]) ).

fof(f810,plain,
    ! [X0,X1] :
      ( ~ empty(X1)
      | ~ in(X0,X1) ),
    inference(cnf_transformation,[status(thm)],[f809]) ).

fof(f811,plain,
    ! [X0,X1] : subset(X0,set_union2(X0,X1)),
    inference(cnf_transformation,[status(thm)],[f193]) ).

fof(f862,definition,
    ( sQ0_spl
  <=> in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) ),
    introduced(definition,[new_symbols(definition,[sQ0_spl])],[split_symbol_definition]) ).

fof(f863,plain,
    ( ~ sQ0_spl
    | in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) ),
    inference(component_clause,[status(thm)],[f862]) ).

fof(f864,plain,
    ( sQ0_spl
    | ~ in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl)) ),
    inference(component_clause,[status(thm)],[f862]) ).

fof(f869,definition,
    ( sQ2_spl
  <=> in(ordered_pair(sK62_skl,sK64_skl),sK61_skl) ),
    introduced(definition,[new_symbols(definition,[sQ2_spl])],[split_symbol_definition]) ).

fof(f870,plain,
    ( ~ sQ2_spl
    | in(ordered_pair(sK62_skl,sK64_skl),sK61_skl) ),
    inference(component_clause,[status(thm)],[f869]) ).

fof(f872,plain,
    ( sQ2_spl
    | sQ0_spl ),
    inference(split_clause,[status(thm)],[f650,f862,f869]) ).

fof(f873,definition,
    ( sQ3_spl
  <=> in(sK64_skl,sK63_skl) ),
    introduced(definition,[new_symbols(definition,[sQ3_spl])],[split_symbol_definition]) ).

fof(f874,plain,
    ( ~ sQ3_spl
    | in(sK64_skl,sK63_skl) ),
    inference(component_clause,[status(thm)],[f873]) ).

fof(f876,plain,
    ( sQ3_spl
    | sQ0_spl ),
    inference(split_clause,[status(thm)],[f651,f862,f873]) ).

fof(f877,definition,
    ! [X0] :
      ( sQ4_spl
    <=> ( ~ in(X0,sK63_skl)
        | ~ in(ordered_pair(sK62_skl,X0),sK61_skl)
        | ~ in(X0,relation_rng(sK61_skl)) ) ),
    introduced(definition,[new_symbols(definition,[sQ4_spl])],[split_symbol_definition]) ).

fof(f878,plain,
    ! [X0] :
      ( ~ sQ4_spl
      | ~ in(X0,sK63_skl)
      | ~ in(ordered_pair(sK62_skl,X0),sK61_skl)
      | ~ in(X0,relation_rng(sK61_skl)) ),
    inference(component_clause,[status(thm)],[f877]) ).

fof(f880,plain,
    ( sQ4_spl
    | ~ sQ0_spl ),
    inference(split_clause,[status(thm)],[f652,f862,f877]) ).

fof(f895,plain,
    ! [X0,X1,X2] :
      ( in(ordered_pair(X1,sK9_skl(X1,relation_inverse_image(X0,X2),X2,X0)),X0)
      | ~ in(X1,relation_inverse_image(X0,X2))
      | ~ relation(X0) ),
    inference(destructive_equality_resolution,[status(thm)],[f265]) ).

fof(f896,plain,
    ! [X0,X1,X2] :
      ( in(sK9_skl(X1,relation_inverse_image(X0,X2),X2,X0),X2)
      | ~ in(X1,relation_inverse_image(X0,X2))
      | ~ relation(X0) ),
    inference(destructive_equality_resolution,[status(thm)],[f266]) ).

fof(f897,plain,
    ! [X0,X1,X2,X3] :
      ( ~ in(X3,X2)
      | ~ in(ordered_pair(X1,X3),X0)
      | in(X1,relation_inverse_image(X0,X2))
      | ~ relation(X0) ),
    inference(destructive_equality_resolution,[status(thm)],[f267]) ).

fof(f903,plain,
    ! [X0,X1] :
      ( X0 = X1
      | ~ in(X0,singleton(X1)) ),
    inference(destructive_equality_resolution,[status(thm)],[f293]) ).

fof(f928,plain,
    ! [X0,X1,X2] :
      ( ~ in(ordered_pair(X2,X1),X0)
      | in(X1,relation_rng(X0))
      | ~ relation(X0) ),
    inference(destructive_equality_resolution,[status(thm)],[f405]) ).

fof(f947,plain,
    ! [X0,X1,X2] :
      ( ~ in(X2,X1)
      | ~ in(ordered_pair(X0,X2),sK61_skl)
      | in(X0,relation_inverse_image(sK61_skl,X1)) ),
    inference(resolution,[status(thm)],[f897,f648]) ).

fof(f948,plain,
    ! [X0,X1] :
      ( ~ in(ordered_pair(X1,X0),sK61_skl)
      | in(X0,relation_rng(sK61_skl)) ),
    inference(resolution,[status(thm)],[f928,f648]) ).

fof(f956,plain,
    relation(relation_rng(sK53_skl)),
    inference(resolution,[status(thm)],[f556,f503]) ).

fof(f957,plain,
    empty(relation_rng(sK53_skl)),
    inference(resolution,[status(thm)],[f556,f502]) ).

fof(f969,plain,
    ! [X0] :
      ( ~ sQ2_spl
      | ~ in(sK64_skl,X0)
      | in(sK62_skl,relation_inverse_image(sK61_skl,X0)) ),
    inference(resolution,[status(thm)],[f947,f870]) ).

fof(f970,plain,
    ( sQ0_spl
    | ~ sQ2_spl
    | ~ in(sK64_skl,sK63_skl) ),
    inference(resolution,[status(thm)],[f969,f864]) ).

fof(f972,plain,
    ( sQ0_spl
    | ~ sQ2_spl
    | ~ sQ3_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f970,f874]) ).

fof(f973,plain,
    ( sQ0_spl
    | ~ sQ2_spl
    | ~ sQ3_spl ),
    inference(contradiction_clause,[status(thm)],[f972]) ).

fof(f974,plain,
    ! [X0] :
      ( ~ sQ4_spl
      | ~ in(X0,sK63_skl)
      | ~ in(ordered_pair(sK62_skl,X0),sK61_skl) ),
    inference(forward_subsumption_resolution,[status(thm)],[f878,f948]) ).

fof(f978,plain,
    empty(relation_rng(relation_rng(sK53_skl))),
    inference(resolution,[status(thm)],[f957,f502]) ).

fof(f985,plain,
    relation(relation_rng(relation_rng(relation_rng(sK53_skl)))),
    inference(resolution,[status(thm)],[f978,f503]) ).

fof(f989,plain,
    ( ~ empty(relation_rng(sK56_skl))
    | ~ relation(sK56_skl) ),
    inference(resolution,[status(thm)],[f497,f565]) ).

fof(f992,definition,
    ( sQ5_spl
  <=> relation(sK56_skl) ),
    introduced(definition,[new_symbols(definition,[sQ5_spl])],[split_symbol_definition]) ).

fof(f994,plain,
    ( sQ5_spl
    | ~ relation(sK56_skl) ),
    inference(component_clause,[status(thm)],[f992]) ).

fof(f995,definition,
    ( sQ6_spl
  <=> empty(relation_rng(sK56_skl)) ),
    introduced(definition,[new_symbols(definition,[sQ6_spl])],[split_symbol_definition]) ).

fof(f997,plain,
    ( sQ6_spl
    | ~ empty(relation_rng(sK56_skl)) ),
    inference(component_clause,[status(thm)],[f995]) ).

fof(f998,plain,
    ( ~ sQ6_spl
    | ~ sQ5_spl ),
    inference(split_clause,[status(thm)],[f989,f992,f995]) ).

fof(f1009,plain,
    ( sQ5_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f994,f566]) ).

fof(f1010,plain,
    sQ5_spl,
    inference(contradiction_clause,[status(thm)],[f1009]) ).

fof(f1026,plain,
    ( sQ6_spl
    | ~ empty(relation_rng(relation_rng(sK56_skl)))
    | ~ relation(relation_rng(sK56_skl)) ),
    inference(resolution,[status(thm)],[f997,f497]) ).

fof(f1027,definition,
    ( sQ9_spl
  <=> relation(relation_rng(sK56_skl)) ),
    introduced(definition,[new_symbols(definition,[sQ9_spl])],[split_symbol_definition]) ).

fof(f1030,definition,
    ( sQ10_spl
  <=> empty(relation_rng(relation_rng(sK56_skl))) ),
    introduced(definition,[new_symbols(definition,[sQ10_spl])],[split_symbol_definition]) ).

fof(f1033,plain,
    ( sQ6_spl
    | ~ sQ10_spl
    | ~ sQ9_spl ),
    inference(split_clause,[status(thm)],[f1026,f1027,f1030,f995]) ).

fof(f1050,plain,
    ( relation_rng(relation_rng(relation_rng(sK53_skl))) = empty_set
    | relation_rng(relation_rng(relation_rng(relation_rng(sK53_skl)))) != empty_set ),
    inference(resolution,[status(thm)],[f785,f985]) ).

fof(f1054,plain,
    ( relation_rng(sK53_skl) = empty_set
    | relation_rng(relation_rng(sK53_skl)) != empty_set ),
    inference(resolution,[status(thm)],[f785,f956]) ).

fof(f1056,plain,
    ( empty_set = empty_set
    | relation_rng(empty_set) != empty_set ),
    inference(resolution,[status(thm)],[f785,f491]) ).

fof(f1073,definition,
    ( sQ15_spl
  <=> relation_rng(relation_rng(relation_rng(relation_rng(sK53_skl)))) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ15_spl])],[split_symbol_definition]) ).

fof(f1075,plain,
    ( sQ15_spl
    | relation_rng(relation_rng(relation_rng(relation_rng(sK53_skl)))) != empty_set ),
    inference(component_clause,[status(thm)],[f1073]) ).

fof(f1076,definition,
    ( sQ16_spl
  <=> relation_rng(relation_rng(relation_rng(sK53_skl))) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ16_spl])],[split_symbol_definition]) ).

fof(f1079,plain,
    ( sQ16_spl
    | ~ sQ15_spl ),
    inference(split_clause,[status(thm)],[f1050,f1073,f1076]) ).

fof(f1084,definition,
    ( sQ18_spl
  <=> relation_rng(relation_rng(sK53_skl)) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ18_spl])],[split_symbol_definition]) ).

fof(f1086,plain,
    ( sQ18_spl
    | relation_rng(relation_rng(sK53_skl)) != empty_set ),
    inference(component_clause,[status(thm)],[f1084]) ).

fof(f1092,definition,
    ( sQ20_spl
  <=> relation_rng(sK53_skl) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ20_spl])],[split_symbol_definition]) ).

fof(f1095,plain,
    ( sQ20_spl
    | ~ sQ18_spl ),
    inference(split_clause,[status(thm)],[f1054,f1084,f1092]) ).

fof(f1096,definition,
    ( sQ21_spl
  <=> sK53_skl = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ21_spl])],[split_symbol_definition]) ).

fof(f1097,plain,
    ( ~ sQ21_spl
    | sK53_skl = empty_set ),
    inference(component_clause,[status(thm)],[f1096]) ).

fof(f1100,definition,
    ( sQ22_spl
  <=> relation_rng(empty_set) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ22_spl])],[split_symbol_definition]) ).

fof(f1102,plain,
    ( sQ22_spl
    | relation_rng(empty_set) != empty_set ),
    inference(component_clause,[status(thm)],[f1100]) ).

fof(f1103,definition,
    ( sQ23_spl
  <=> empty_set = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ23_spl])],[split_symbol_definition]) ).

fof(f1106,plain,
    ( sQ23_spl
    | ~ sQ22_spl ),
    inference(split_clause,[status(thm)],[f1056,f1100,f1103]) ).

fof(f1114,plain,
    ( sQ22_spl
    | empty_set != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f1102]) ).

fof(f1115,plain,
    ( sQ22_spl
    | $false ),
    inference(trivial_equality_resolution,[status(thm)],[f1114]) ).

fof(f1116,plain,
    sQ22_spl,
    inference(contradiction_clause,[status(thm)],[f1115]) ).

fof(f1139,plain,
    ! [X0] :
      ( subset(relation_rng(empty_set),relation_rng(X0))
      | ~ relation(X0)
      | ~ relation(empty_set) ),
    inference(resolution,[status(thm)],[f685,f671]) ).

fof(f1140,definition,
    ( sQ26_spl
  <=> relation(empty_set) ),
    introduced(definition,[new_symbols(definition,[sQ26_spl])],[split_symbol_definition]) ).

fof(f1142,plain,
    ( sQ26_spl
    | ~ relation(empty_set) ),
    inference(component_clause,[status(thm)],[f1140]) ).

fof(f1143,definition,
    ! [X0] :
      ( sQ27_spl
    <=> ( subset(relation_rng(empty_set),relation_rng(X0))
        | ~ relation(X0) ) ),
    introduced(definition,[new_symbols(definition,[sQ27_spl])],[split_symbol_definition]) ).

fof(f1146,plain,
    ( sQ27_spl
    | ~ sQ26_spl ),
    inference(split_clause,[status(thm)],[f1139,f1140,f1143]) ).

fof(f1147,plain,
    ( sQ26_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f1142,f491]) ).

fof(f1148,plain,
    sQ26_spl,
    inference(contradiction_clause,[status(thm)],[f1147]) ).

fof(f1156,plain,
    ! [X0] : set_union2(empty_set,X0) = X0,
    inference(paramodulation,[status(thm)],[f214,f656]) ).

fof(f1187,plain,
    ( sQ18_spl
    | ~ sQ21_spl
    | relation_rng(relation_rng(empty_set)) != empty_set ),
    inference(forward_demodulation,[status(thm)],[f1097,f1086]) ).

fof(f1188,plain,
    ( sQ18_spl
    | ~ sQ21_spl
    | relation_rng(empty_set) != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f1187]) ).

fof(f1189,plain,
    ( sQ18_spl
    | ~ sQ21_spl
    | empty_set != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f1188]) ).

fof(f1190,plain,
    ( sQ18_spl
    | ~ sQ21_spl
    | $false ),
    inference(trivial_equality_resolution,[status(thm)],[f1189]) ).

fof(f1191,plain,
    ( sQ18_spl
    | ~ sQ21_spl ),
    inference(contradiction_clause,[status(thm)],[f1190]) ).

fof(f1235,plain,
    ! [X0] :
      ( ~ empty(relation_rng(X0))
      | ~ relation(X0)
      | X0 = empty_set ),
    inference(resolution,[status(thm)],[f796,f497]) ).

fof(f1304,plain,
    ! [X0,X1] :
      ( subset(relation_rng(set_intersection2(X0,X1)),relation_rng(X0))
      | ~ relation(X0)
      | ~ relation(set_intersection2(X0,X1)) ),
    inference(resolution,[status(thm)],[f653,f671]) ).

fof(f1316,plain,
    ! [X0,X1] :
      ( subset(relation_rng(set_difference(X0,X1)),relation_rng(X0))
      | ~ relation(X0)
      | ~ relation(set_difference(X0,X1)) ),
    inference(resolution,[status(thm)],[f696,f671]) ).

fof(f1325,plain,
    ! [X0,X1] :
      ( ~ empty(relation_rng(X1))
      | ~ relation(X1)
      | ~ in(X0,X1) ),
    inference(resolution,[status(thm)],[f810,f497]) ).

fof(f1327,plain,
    ! [X0,X1] :
      ( subset(relation_rng(X0),relation_rng(set_union2(X0,X1)))
      | ~ relation(set_union2(X0,X1))
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f811,f671]) ).

fof(f1352,plain,
    ! [X0] :
      ( ~ empty(X0)
      | ~ relation(identity_relation(X0))
      | identity_relation(X0) = empty_set ),
    inference(paramodulation,[status(thm)],[f801,f1235]) ).

fof(f1354,plain,
    ! [X0] :
      ( ~ empty(X0)
      | identity_relation(X0) = empty_set ),
    inference(forward_subsumption_resolution,[status(thm)],[f1352,f457]) ).

fof(f1355,definition,
    ( sQ29_spl
  <=> empty(empty_set) ),
    introduced(definition,[new_symbols(definition,[sQ29_spl])],[split_symbol_definition]) ).

fof(f1357,plain,
    ( sQ29_spl
    | ~ empty(empty_set) ),
    inference(component_clause,[status(thm)],[f1355]) ).

fof(f1359,plain,
    identity_relation(empty_set) = empty_set,
    inference(resolution,[status(thm)],[f1354,f478]) ).

fof(f1360,plain,
    ! [X0] :
      ( ~ empty(relation_rng(X0))
      | ~ relation(X0)
      | identity_relation(X0) = empty_set ),
    inference(resolution,[status(thm)],[f1354,f497]) ).

fof(f1417,plain,
    ! [X0,X1] :
      ( in(ordered_pair(sK2_skl(X1,sK61_skl,X0),sK3_skl(X1,sK61_skl,X0)),X0)
      | in(ordered_pair(sK2_skl(X1,sK61_skl,X0),sK3_skl(X1,sK61_skl,X0)),sK61_skl)
      | sK61_skl = relation_dom_restriction(X0,X1)
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f240,f648]) ).

fof(f1421,plain,
    ! [X0,X1,X2] :
      ( ~ in(sK3_skl(X1,sK61_skl,X0),X2)
      | in(sK2_skl(X1,sK61_skl,X0),relation_inverse_image(sK61_skl,X2))
      | in(ordered_pair(sK2_skl(X1,sK61_skl,X0),sK3_skl(X1,sK61_skl,X0)),X0)
      | sK61_skl = relation_dom_restriction(X0,X1)
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f1417,f947]) ).

fof(f1425,plain,
    ! [X0,X1] :
      ( ~ in(ordered_pair(sK2_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0)),X0)
      | ~ in(ordered_pair(sK2_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0)),sK61_skl)
      | sK61_skl = relation_dom_restriction(X0,relation_inverse_image(sK61_skl,X1))
      | ~ relation(sK61_skl)
      | ~ relation(X0)
      | ~ in(sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),X1)
      | in(ordered_pair(sK2_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0)),X0)
      | sK61_skl = relation_dom_restriction(X0,relation_inverse_image(sK61_skl,X1))
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f1421,f238]) ).

fof(f1427,definition,
    ! [X0,X1] :
      ( sQ30_spl
    <=> ( ~ in(ordered_pair(sK2_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0)),X0)
        | ~ in(ordered_pair(sK2_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0)),sK61_skl)
        | sK61_skl = relation_dom_restriction(X0,relation_inverse_image(sK61_skl,X1))
        | ~ relation(X0)
        | ~ in(sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),X1)
        | in(ordered_pair(sK2_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0),sK3_skl(relation_inverse_image(sK61_skl,X1),sK61_skl,X0)),X0)
        | sK61_skl = relation_dom_restriction(X0,relation_inverse_image(sK61_skl,X1))
        | ~ relation(X0) ) ),
    introduced(definition,[new_symbols(definition,[sQ30_spl])],[split_symbol_definition]) ).

fof(f1430,definition,
    ( sQ31_spl
  <=> relation(sK61_skl) ),
    introduced(definition,[new_symbols(definition,[sQ31_spl])],[split_symbol_definition]) ).

fof(f1432,plain,
    ( sQ31_spl
    | ~ relation(sK61_skl) ),
    inference(component_clause,[status(thm)],[f1430]) ).

fof(f1433,plain,
    ( ~ sQ31_spl
    | sQ30_spl ),
    inference(split_clause,[status(thm)],[f1425,f1427,f1430]) ).

fof(f1444,plain,
    ( sQ15_spl
    | ~ sQ21_spl
    | relation_rng(relation_rng(relation_rng(relation_rng(empty_set)))) != empty_set ),
    inference(forward_demodulation,[status(thm)],[f1097,f1075]) ).

fof(f1445,plain,
    ( sQ15_spl
    | ~ sQ21_spl
    | relation_rng(relation_rng(relation_rng(empty_set))) != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f1444]) ).

fof(f1446,plain,
    ( sQ15_spl
    | ~ sQ21_spl
    | relation_rng(relation_rng(empty_set)) != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f1445]) ).

fof(f1447,plain,
    ( sQ15_spl
    | ~ sQ21_spl
    | relation_rng(empty_set) != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f1446]) ).

fof(f1448,plain,
    ( sQ15_spl
    | ~ sQ21_spl
    | empty_set != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f1447]) ).

fof(f1449,plain,
    ( sQ15_spl
    | ~ sQ21_spl
    | $false ),
    inference(trivial_equality_resolution,[status(thm)],[f1448]) ).

fof(f1450,plain,
    ( sQ15_spl
    | ~ sQ21_spl ),
    inference(contradiction_clause,[status(thm)],[f1449]) ).

fof(f1451,plain,
    ( ~ relation(sK53_skl)
    | sK53_skl = empty_set ),
    inference(resolution,[status(thm)],[f957,f1235]) ).

fof(f1457,definition,
    ( sQ32_spl
  <=> relation(sK53_skl) ),
    introduced(definition,[new_symbols(definition,[sQ32_spl])],[split_symbol_definition]) ).

fof(f1459,plain,
    ( sQ32_spl
    | ~ relation(sK53_skl) ),
    inference(component_clause,[status(thm)],[f1457]) ).

fof(f1460,plain,
    ( ~ sQ32_spl
    | sQ21_spl ),
    inference(split_clause,[status(thm)],[f1451,f1096,f1457]) ).

fof(f1478,plain,
    ( sQ32_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f557,f1459]) ).

fof(f1479,plain,
    sQ32_spl,
    inference(contradiction_clause,[status(thm)],[f1478]) ).

fof(f1532,plain,
    ! [X0,X1] :
      ( ~ empty(X1)
      | ~ relation(identity_relation(X1))
      | ~ in(X0,identity_relation(X1)) ),
    inference(paramodulation,[status(thm)],[f801,f1325]) ).

fof(f1533,plain,
    ! [X0] :
      ( ~ empty(empty_set)
      | ~ relation(empty_set)
      | ~ in(X0,empty_set) ),
    inference(paramodulation,[status(thm)],[f777,f1325]) ).

fof(f1534,plain,
    ! [X0,X1] :
      ( ~ empty(X1)
      | ~ in(X0,identity_relation(X1)) ),
    inference(forward_subsumption_resolution,[status(thm)],[f1532,f457]) ).

fof(f1535,definition,
    ! [X0] :
      ( sQ34_spl
    <=> ~ in(X0,empty_set) ),
    introduced(definition,[new_symbols(definition,[sQ34_spl])],[split_symbol_definition]) ).

fof(f1538,plain,
    ( ~ sQ29_spl
    | ~ sQ26_spl
    | sQ34_spl ),
    inference(split_clause,[status(thm)],[f1533,f1535,f1140,f1355]) ).

fof(f1539,plain,
    ( sQ29_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f1357,f478]) ).

fof(f1540,plain,
    sQ29_spl,
    inference(contradiction_clause,[status(thm)],[f1539]) ).

fof(f1544,plain,
    ! [X0] :
      ( subset(relation_rng(set_intersection2(sK61_skl,X0)),relation_rng(sK61_skl))
      | ~ relation(set_intersection2(sK61_skl,X0)) ),
    inference(resolution,[status(thm)],[f1304,f648]) ).

fof(f1553,plain,
    ! [X0] :
      ( relation_inverse(X0) = empty_set
      | relation_rng(relation_inverse(X0)) != empty_set
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f452,f785]) ).

fof(f1554,plain,
    ! [X0,X1,X2] :
      ( ~ in(ordered_pair(X2,X1),relation_inverse(X0))
      | in(X1,relation_rng(relation_inverse(X0)))
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f452,f928]) ).

fof(f1555,plain,
    ! [X0,X1,X2,X3] :
      ( ~ in(X3,X2)
      | ~ in(ordered_pair(X1,X3),relation_inverse(X0))
      | in(X1,relation_inverse_image(relation_inverse(X0),X2))
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f452,f897]) ).

fof(f1557,plain,
    ! [X0] :
      ( ~ empty(relation_rng(X0))
      | ~ relation(X0)
      | empty(relation_dom(X0)) ),
    inference(resolution,[status(thm)],[f499,f497]) ).

fof(f1560,plain,
    ! [X0] :
      ( ~ empty(relation_rng(X0))
      | ~ relation(X0)
      | relation(relation_dom(X0)) ),
    inference(resolution,[status(thm)],[f500,f497]) ).

fof(f1568,plain,
    powerset(empty_set) != empty_set,
    inference(paramodulation,[status(thm)],[f662,f519]) ).

fof(f1587,plain,
    ! [X0,X1] :
      ( in(ordered_pair(sK4_skl(X1,sK61_skl,X0),sK5_skl(X1,sK61_skl,X0)),X0)
      | in(ordered_pair(sK4_skl(X1,sK61_skl,X0),sK5_skl(X1,sK61_skl,X0)),sK61_skl)
      | sK61_skl = relation_rng_restriction(X1,X0)
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f250,f648]) ).

fof(f1592,plain,
    ( subset(relation_rng(set_intersection2(sK61_skl,empty_set)),relation_rng(sK61_skl))
    | ~ relation(empty_set) ),
    inference(paramodulation,[status(thm)],[f677,f1544]) ).

fof(f1595,plain,
    ( subset(relation_rng(set_intersection2(sK61_skl,sK61_skl)),relation_rng(sK61_skl))
    | ~ relation(sK61_skl) ),
    inference(paramodulation,[status(thm)],[f510,f1544]) ).

fof(f1596,definition,
    ( sQ37_spl
  <=> subset(relation_rng(set_intersection2(sK61_skl,empty_set)),relation_rng(sK61_skl)) ),
    introduced(definition,[new_symbols(definition,[sQ37_spl])],[split_symbol_definition]) ).

fof(f1599,plain,
    ( sQ37_spl
    | ~ sQ26_spl ),
    inference(split_clause,[status(thm)],[f1592,f1140,f1596]) ).

fof(f1600,definition,
    ( sQ38_spl
  <=> subset(relation_rng(set_intersection2(sK61_skl,sK61_skl)),relation_rng(sK61_skl)) ),
    introduced(definition,[new_symbols(definition,[sQ38_spl])],[split_symbol_definition]) ).

fof(f1603,plain,
    ( sQ38_spl
    | ~ sQ31_spl ),
    inference(split_clause,[status(thm)],[f1595,f1430,f1600]) ).

fof(f1604,plain,
    ( sQ31_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f1432,f648]) ).

fof(f1605,plain,
    sQ31_spl,
    inference(contradiction_clause,[status(thm)],[f1604]) ).

fof(f1626,plain,
    ! [X0,X1,X2] :
      ( ~ in(sK5_skl(X1,sK61_skl,X0),X2)
      | in(sK4_skl(X1,sK61_skl,X0),relation_inverse_image(sK61_skl,X2))
      | in(ordered_pair(sK4_skl(X1,sK61_skl,X0),sK5_skl(X1,sK61_skl,X0)),X0)
      | sK61_skl = relation_rng_restriction(X1,X0)
      | ~ relation(X0) ),
    inference(resolution,[status(thm)],[f1587,f947]) ).

fof(f1630,plain,
    ! [X0,X1] :
      ( ~ empty(relation_rng(X1))
      | ~ relation(X1)
      | ~ in(X0,identity_relation(X1)) ),
    inference(resolution,[status(thm)],[f1534,f497]) ).

fof(f1647,plain,
    ! [X0] :
      ( ~ empty(X0)
      | ~ relation(identity_relation(X0))
      | identity_relation(identity_relation(X0)) = empty_set ),
    inference(paramodulation,[status(thm)],[f801,f1360]) ).

fof(f1648,plain,
    ( ~ empty(empty_set)
    | ~ relation(empty_set)
    | identity_relation(empty_set) = empty_set ),
    inference(paramodulation,[status(thm)],[f777,f1360]) ).

fof(f1649,plain,
    ! [X0] :
      ( ~ empty(X0)
      | identity_relation(identity_relation(X0)) = empty_set ),
    inference(forward_subsumption_resolution,[status(thm)],[f1647,f457]) ).

fof(f1650,definition,
    ( sQ40_spl
  <=> identity_relation(empty_set) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ40_spl])],[split_symbol_definition]) ).

fof(f1653,plain,
    ( ~ sQ29_spl
    | ~ sQ26_spl
    | sQ40_spl ),
    inference(split_clause,[status(thm)],[f1648,f1650,f1140,f1355]) ).

fof(f1655,plain,
    ! [X0] :
      ( ~ empty(relation_rng(X0))
      | ~ relation(X0)
      | identity_relation(identity_relation(X0)) = empty_set ),
    inference(resolution,[status(thm)],[f1649,f497]) ).

fof(f1659,plain,
    ( ~ empty(empty_set)
    | ~ relation(empty_set)
    | empty(relation_dom(empty_set)) ),
    inference(paramodulation,[status(thm)],[f777,f1557]) ).

fof(f1660,definition,
    ( sQ41_spl
  <=> empty(relation_dom(empty_set)) ),
    introduced(definition,[new_symbols(definition,[sQ41_spl])],[split_symbol_definition]) ).

fof(f1663,plain,
    ( ~ sQ29_spl
    | ~ sQ26_spl
    | sQ41_spl ),
    inference(split_clause,[status(thm)],[f1659,f1660,f1140,f1355]) ).

fof(f1667,plain,
    ( ~ empty(empty_set)
    | ~ relation(empty_set)
    | relation(relation_dom(empty_set)) ),
    inference(paramodulation,[status(thm)],[f777,f1560]) ).

fof(f1669,definition,
    ( sQ42_spl
  <=> relation(relation_dom(empty_set)) ),
    introduced(definition,[new_symbols(definition,[sQ42_spl])],[split_symbol_definition]) ).

fof(f1672,plain,
    ( ~ sQ29_spl
    | ~ sQ26_spl
    | sQ42_spl ),
    inference(split_clause,[status(thm)],[f1667,f1669,f1140,f1355]) ).

fof(f1675,plain,
    ! [X0] :
      ( subset(relation_rng(set_difference(empty_set,X0)),relation_rng(empty_set))
      | ~ relation(empty_set)
      | ~ relation(empty_set) ),
    inference(paramodulation,[status(thm)],[f756,f1316]) ).

fof(f1677,definition,
    ! [X0] :
      ( sQ43_spl
    <=> subset(relation_rng(set_difference(empty_set,X0)),relation_rng(empty_set)) ),
    introduced(definition,[new_symbols(definition,[sQ43_spl])],[split_symbol_definition]) ).

fof(f1680,plain,
    ( sQ43_spl
    | ~ sQ26_spl ),
    inference(split_clause,[status(thm)],[f1675,f1140,f1677]) ).

fof(f1687,plain,
    ! [X0] :
      ( subset(relation_rng(empty_set),relation_rng(set_union2(empty_set,X0)))
      | ~ relation(X0)
      | ~ relation(empty_set) ),
    inference(paramodulation,[status(thm)],[f1156,f1327]) ).

fof(f1692,definition,
    ! [X0] :
      ( sQ44_spl
    <=> ( subset(relation_rng(empty_set),relation_rng(set_union2(empty_set,X0)))
        | ~ relation(X0) ) ),
    introduced(definition,[new_symbols(definition,[sQ44_spl])],[split_symbol_definition]) ).

fof(f1695,plain,
    ( sQ44_spl
    | ~ sQ26_spl ),
    inference(split_clause,[status(thm)],[f1687,f1140,f1692]) ).

fof(f1713,plain,
    ! [X0] :
      ( sK19_skl(singleton(X0)) = X0
      | singleton(X0) = empty_set ),
    inference(resolution,[status(thm)],[f301,f903]) ).

fof(f1715,plain,
    ! [X0] :
      ( ~ in(X0,sK19_skl(X0))
      | X0 = empty_set ),
    inference(resolution,[status(thm)],[f301,f208]) ).

fof(f1716,plain,
    ! [X0] : sK19_skl(singleton(X0)) = X0,
    inference(forward_subsumption_resolution,[status(thm)],[f1713,f519]) ).

fof(f1717,plain,
    sK19_skl(powerset(empty_set)) = empty_set,
    inference(paramodulation,[status(thm)],[f662,f1716]) ).

fof(f1719,plain,
    ( in(empty_set,powerset(empty_set))
    | powerset(empty_set) = empty_set ),
    inference(paramodulation,[status(thm)],[f1717,f301]) ).

fof(f1720,definition,
    ( sQ45_spl
  <=> powerset(empty_set) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ45_spl])],[split_symbol_definition]) ).

fof(f1721,plain,
    ( ~ sQ45_spl
    | powerset(empty_set) = empty_set ),
    inference(component_clause,[status(thm)],[f1720]) ).

fof(f1723,definition,
    ( sQ46_spl
  <=> in(empty_set,powerset(empty_set)) ),
    introduced(definition,[new_symbols(definition,[sQ46_spl])],[split_symbol_definition]) ).

fof(f1726,plain,
    ( sQ46_spl
    | sQ45_spl ),
    inference(split_clause,[status(thm)],[f1719,f1720,f1723]) ).

fof(f1727,plain,
    ( ~ sQ45_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f1721,f1568]) ).

fof(f1728,plain,
    ~ sQ45_spl,
    inference(contradiction_clause,[status(thm)],[f1727]) ).

fof(f1795,plain,
    ( ~ in(powerset(empty_set),empty_set)
    | powerset(empty_set) = empty_set ),
    inference(paramodulation,[status(thm)],[f1717,f1715]) ).

fof(f1797,definition,
    ( sQ47_spl
  <=> in(powerset(empty_set),empty_set) ),
    introduced(definition,[new_symbols(definition,[sQ47_spl])],[split_symbol_definition]) ).

fof(f1800,plain,
    ( ~ sQ47_spl
    | sQ45_spl ),
    inference(split_clause,[status(thm)],[f1795,f1720,f1797]) ).

fof(f1809,plain,
    ! [X0,X1] :
      ( ~ empty(X1)
      | ~ relation(identity_relation(X1))
      | ~ in(X0,identity_relation(identity_relation(X1))) ),
    inference(paramodulation,[status(thm)],[f801,f1630]) ).

fof(f1810,plain,
    ! [X0] :
      ( ~ empty(empty_set)
      | ~ relation(empty_set)
      | ~ in(X0,identity_relation(empty_set)) ),
    inference(paramodulation,[status(thm)],[f777,f1630]) ).

fof(f1811,plain,
    ! [X0,X1] :
      ( ~ empty(X1)
      | ~ in(X0,identity_relation(identity_relation(X1))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f1809,f457]) ).

fof(f1812,definition,
    ! [X0] :
      ( sQ48_spl
    <=> ~ in(X0,identity_relation(empty_set)) ),
    introduced(definition,[new_symbols(definition,[sQ48_spl])],[split_symbol_definition]) ).

fof(f1815,plain,
    ( ~ sQ29_spl
    | ~ sQ26_spl
    | sQ48_spl ),
    inference(split_clause,[status(thm)],[f1810,f1812,f1140,f1355]) ).

fof(f1818,plain,
    ! [X0,X1] :
      ( ~ empty(relation_rng(X1))
      | ~ relation(X1)
      | ~ in(X0,identity_relation(identity_relation(X1))) ),
    inference(resolution,[status(thm)],[f1811,f497]) ).

fof(f1872,plain,
    relation_inverse(relation_inverse(sK56_skl)) = sK56_skl,
    inference(resolution,[status(thm)],[f514,f566]) ).

fof(f1873,plain,
    relation_inverse(relation_inverse(empty_set)) = empty_set,
    inference(resolution,[status(thm)],[f514,f491]) ).

fof(f1874,plain,
    relation_inverse(relation_inverse(sK61_skl)) = sK61_skl,
    inference(resolution,[status(thm)],[f514,f648]) ).

fof(f1877,definition,
    ( sQ50_spl
  <=> relation(relation_inverse(sK56_skl)) ),
    introduced(definition,[new_symbols(definition,[sQ50_spl])],[split_symbol_definition]) ).

fof(f1878,plain,
    ( ~ sQ50_spl
    | relation(relation_inverse(sK56_skl)) ),
    inference(component_clause,[status(thm)],[f1877]) ).

fof(f1879,plain,
    ( sQ50_spl
    | ~ relation(relation_inverse(sK56_skl)) ),
    inference(component_clause,[status(thm)],[f1877]) ).

fof(f1882,definition,
    ( sQ51_spl
  <=> relation(relation_inverse(empty_set)) ),
    introduced(definition,[new_symbols(definition,[sQ51_spl])],[split_symbol_definition]) ).

fof(f1883,plain,
    ( ~ sQ51_spl
    | relation(relation_inverse(empty_set)) ),
    inference(component_clause,[status(thm)],[f1882]) ).

fof(f1884,plain,
    ( sQ51_spl
    | ~ relation(relation_inverse(empty_set)) ),
    inference(component_clause,[status(thm)],[f1882]) ).

fof(f1887,definition,
    ( sQ52_spl
  <=> relation(relation_inverse(sK61_skl)) ),
    introduced(definition,[new_symbols(definition,[sQ52_spl])],[split_symbol_definition]) ).

fof(f1888,plain,
    ( ~ sQ52_spl
    | relation(relation_inverse(sK61_skl)) ),
    inference(component_clause,[status(thm)],[f1887]) ).

fof(f1889,plain,
    ( sQ52_spl
    | ~ relation(relation_inverse(sK61_skl)) ),
    inference(component_clause,[status(thm)],[f1887]) ).

fof(f1995,plain,
    ! [X0] :
      ( relation_inverse(identity_relation(X0)) = empty_set
      | relation_rng(relation_inverse(identity_relation(X0))) != empty_set ),
    inference(resolution,[status(thm)],[f1553,f457]) ).

fof(f1997,plain,
    ( relation_inverse(empty_set) = empty_set
    | relation_rng(relation_inverse(empty_set)) != empty_set ),
    inference(resolution,[status(thm)],[f1553,f491]) ).

fof(f2007,definition,
    ( sQ55_spl
  <=> relation_rng(relation_inverse(empty_set)) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ55_spl])],[split_symbol_definition]) ).

fof(f2010,definition,
    ( sQ56_spl
  <=> relation_inverse(empty_set) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ56_spl])],[split_symbol_definition]) ).

fof(f2011,plain,
    ( ~ sQ56_spl
    | relation_inverse(empty_set) = empty_set ),
    inference(component_clause,[status(thm)],[f2010]) ).

fof(f2013,plain,
    ( sQ56_spl
    | ~ sQ55_spl ),
    inference(split_clause,[status(thm)],[f1997,f2007,f2010]) ).

fof(f2024,plain,
    ( ~ empty(empty_set)
    | ~ relation(empty_set)
    | identity_relation(identity_relation(empty_set)) = empty_set ),
    inference(paramodulation,[status(thm)],[f777,f1655]) ).

fof(f2026,definition,
    ( sQ59_spl
  <=> identity_relation(identity_relation(empty_set)) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ59_spl])],[split_symbol_definition]) ).

fof(f2029,plain,
    ( ~ sQ29_spl
    | ~ sQ26_spl
    | sQ59_spl ),
    inference(split_clause,[status(thm)],[f2024,f2026,f1140,f1355]) ).

fof(f2039,plain,
    ! [X0,X1] :
      ( ~ in(ordered_pair(X1,X0),sK61_skl)
      | in(X0,relation_rng(relation_inverse(relation_inverse(sK61_skl))))
      | ~ relation(relation_inverse(sK61_skl)) ),
    inference(paramodulation,[status(thm)],[f1874,f1554]) ).

fof(f2040,plain,
    ! [X0,X1] :
      ( ~ in(ordered_pair(X1,X0),empty_set)
      | in(X0,relation_rng(relation_inverse(relation_inverse(empty_set))))
      | ~ relation(relation_inverse(empty_set)) ),
    inference(paramodulation,[status(thm)],[f1873,f1554]) ).

fof(f2041,plain,
    ! [X0,X1] :
      ( ~ in(ordered_pair(X1,X0),sK56_skl)
      | in(X0,relation_rng(relation_inverse(relation_inverse(sK56_skl))))
      | ~ relation(relation_inverse(sK56_skl)) ),
    inference(paramodulation,[status(thm)],[f1872,f1554]) ).

fof(f2043,definition,
    ! [X0,X1] :
      ( sQ60_spl
    <=> ( ~ in(ordered_pair(X1,X0),sK61_skl)
        | in(X0,relation_rng(relation_inverse(relation_inverse(sK61_skl)))) ) ),
    introduced(definition,[new_symbols(definition,[sQ60_spl])],[split_symbol_definition]) ).

fof(f2046,plain,
    ( sQ60_spl
    | ~ sQ52_spl ),
    inference(split_clause,[status(thm)],[f2039,f1887,f2043]) ).

fof(f2047,definition,
    ! [X0,X1] :
      ( sQ61_spl
    <=> ( ~ in(ordered_pair(X1,X0),empty_set)
        | in(X0,relation_rng(relation_inverse(relation_inverse(empty_set)))) ) ),
    introduced(definition,[new_symbols(definition,[sQ61_spl])],[split_symbol_definition]) ).

fof(f2050,plain,
    ( sQ61_spl
    | ~ sQ51_spl ),
    inference(split_clause,[status(thm)],[f2040,f1882,f2047]) ).

fof(f2051,definition,
    ! [X0,X1] :
      ( sQ62_spl
    <=> ( ~ in(ordered_pair(X1,X0),sK56_skl)
        | in(X0,relation_rng(relation_inverse(relation_inverse(sK56_skl)))) ) ),
    introduced(definition,[new_symbols(definition,[sQ62_spl])],[split_symbol_definition]) ).

fof(f2054,plain,
    ( sQ62_spl
    | ~ sQ50_spl ),
    inference(split_clause,[status(thm)],[f2041,f1877,f2051]) ).

fof(f2056,plain,
    ! [X0,X1,X2] :
      ( ~ in(X2,X1)
      | ~ in(ordered_pair(X0,X2),sK61_skl)
      | in(X0,relation_inverse_image(relation_inverse(relation_inverse(sK61_skl)),X1))
      | ~ relation(relation_inverse(sK61_skl)) ),
    inference(paramodulation,[status(thm)],[f1874,f1555]) ).

fof(f2057,plain,
    ! [X0,X1,X2] :
      ( ~ in(X2,X1)
      | ~ in(ordered_pair(X0,X2),empty_set)
      | in(X0,relation_inverse_image(relation_inverse(relation_inverse(empty_set)),X1))
      | ~ relation(relation_inverse(empty_set)) ),
    inference(paramodulation,[status(thm)],[f1873,f1555]) ).

fof(f2058,plain,
    ! [X0,X1,X2] :
      ( ~ in(X2,X1)
      | ~ in(ordered_pair(X0,X2),sK56_skl)
      | in(X0,relation_inverse_image(relation_inverse(relation_inverse(sK56_skl)),X1))
      | ~ relation(relation_inverse(sK56_skl)) ),
    inference(paramodulation,[status(thm)],[f1872,f1555]) ).

fof(f2060,definition,
    ! [X0,X1,X2] :
      ( sQ63_spl
    <=> ( ~ in(X2,X1)
        | ~ in(ordered_pair(X0,X2),sK61_skl)
        | in(X0,relation_inverse_image(relation_inverse(relation_inverse(sK61_skl)),X1)) ) ),
    introduced(definition,[new_symbols(definition,[sQ63_spl])],[split_symbol_definition]) ).

fof(f2063,plain,
    ( sQ63_spl
    | ~ sQ52_spl ),
    inference(split_clause,[status(thm)],[f2056,f1887,f2060]) ).

fof(f2064,definition,
    ! [X0,X1,X2] :
      ( sQ64_spl
    <=> ( ~ in(X2,X1)
        | ~ in(ordered_pair(X0,X2),empty_set)
        | in(X0,relation_inverse_image(relation_inverse(relation_inverse(empty_set)),X1)) ) ),
    introduced(definition,[new_symbols(definition,[sQ64_spl])],[split_symbol_definition]) ).

fof(f2067,plain,
    ( sQ64_spl
    | ~ sQ51_spl ),
    inference(split_clause,[status(thm)],[f2057,f1882,f2064]) ).

fof(f2068,definition,
    ! [X0,X1,X2] :
      ( sQ65_spl
    <=> ( ~ in(X2,X1)
        | ~ in(ordered_pair(X0,X2),sK56_skl)
        | in(X0,relation_inverse_image(relation_inverse(relation_inverse(sK56_skl)),X1)) ) ),
    introduced(definition,[new_symbols(definition,[sQ65_spl])],[split_symbol_definition]) ).

fof(f2071,plain,
    ( sQ65_spl
    | ~ sQ50_spl ),
    inference(split_clause,[status(thm)],[f2058,f1877,f2068]) ).

fof(f2072,plain,
    ( sQ50_spl
    | ~ relation(sK56_skl) ),
    inference(resolution,[status(thm)],[f1879,f452]) ).

fof(f2074,plain,
    ( sQ50_spl
    | ~ sQ5_spl ),
    inference(split_clause,[status(thm)],[f2072,f992,f1877]) ).

fof(f2077,plain,
    ( sQ51_spl
    | ~ relation(empty_set) ),
    inference(resolution,[status(thm)],[f1884,f452]) ).

fof(f2079,plain,
    ( sQ51_spl
    | ~ sQ26_spl ),
    inference(split_clause,[status(thm)],[f2077,f1140,f1882]) ).

fof(f2083,plain,
    ( sQ52_spl
    | ~ relation(sK61_skl) ),
    inference(resolution,[status(thm)],[f1889,f452]) ).

fof(f2085,plain,
    ( sQ52_spl
    | ~ sQ31_spl ),
    inference(split_clause,[status(thm)],[f2083,f1430,f1887]) ).

fof(f2088,plain,
    ( ~ sQ50_spl
    | relation_inverse(relation_inverse(sK56_skl)) = empty_set
    | relation_rng(relation_inverse(relation_inverse(sK56_skl))) != empty_set ),
    inference(resolution,[status(thm)],[f1878,f1553]) ).

fof(f2098,definition,
    ( sQ66_spl
  <=> relation_rng(relation_inverse(relation_inverse(sK56_skl))) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ66_spl])],[split_symbol_definition]) ).

fof(f2101,definition,
    ( sQ67_spl
  <=> relation_inverse(relation_inverse(sK56_skl)) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ67_spl])],[split_symbol_definition]) ).

fof(f2104,plain,
    ( ~ sQ50_spl
    | sQ67_spl
    | ~ sQ66_spl ),
    inference(split_clause,[status(thm)],[f2088,f2098,f2101,f1877]) ).

fof(f2107,plain,
    ( ~ sQ51_spl
    | relation_inverse(relation_inverse(empty_set)) = empty_set
    | relation_rng(relation_inverse(relation_inverse(empty_set))) != empty_set ),
    inference(resolution,[status(thm)],[f1883,f1553]) ).

fof(f2117,definition,
    ( sQ68_spl
  <=> relation_rng(relation_inverse(relation_inverse(empty_set))) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ68_spl])],[split_symbol_definition]) ).

fof(f2119,plain,
    ( sQ68_spl
    | relation_rng(relation_inverse(relation_inverse(empty_set))) != empty_set ),
    inference(component_clause,[status(thm)],[f2117]) ).

fof(f2120,definition,
    ( sQ69_spl
  <=> relation_inverse(relation_inverse(empty_set)) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ69_spl])],[split_symbol_definition]) ).

fof(f2123,plain,
    ( ~ sQ51_spl
    | sQ69_spl
    | ~ sQ68_spl ),
    inference(split_clause,[status(thm)],[f2107,f2117,f2120,f1882]) ).

fof(f2125,plain,
    ( sQ68_spl
    | relation_rng(empty_set) != empty_set ),
    inference(forward_demodulation,[status(thm)],[f1873,f2119]) ).

fof(f2126,plain,
    ( sQ68_spl
    | empty_set != empty_set ),
    inference(forward_demodulation,[status(thm)],[f777,f2125]) ).

fof(f2127,plain,
    ( sQ68_spl
    | $false ),
    inference(trivial_equality_resolution,[status(thm)],[f2126]) ).

fof(f2128,plain,
    sQ68_spl,
    inference(contradiction_clause,[status(thm)],[f2127]) ).

fof(f2130,plain,
    ( ~ sQ52_spl
    | relation_inverse(relation_inverse(sK61_skl)) = empty_set
    | relation_rng(relation_inverse(relation_inverse(sK61_skl))) != empty_set ),
    inference(resolution,[status(thm)],[f1888,f1553]) ).

fof(f2140,definition,
    ( sQ70_spl
  <=> relation_rng(relation_inverse(relation_inverse(sK61_skl))) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ70_spl])],[split_symbol_definition]) ).

fof(f2143,definition,
    ( sQ71_spl
  <=> relation_inverse(relation_inverse(sK61_skl)) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ71_spl])],[split_symbol_definition]) ).

fof(f2146,plain,
    ( ~ sQ52_spl
    | sQ71_spl
    | ~ sQ70_spl ),
    inference(split_clause,[status(thm)],[f2130,f2140,f2143,f1887]) ).

fof(f2174,plain,
    ! [X0,X1,X2] :
      ( ~ in(sK5_skl(X0,sK61_skl,X1),X2)
      | in(ordered_pair(sK4_skl(X0,sK61_skl,X1),sK5_skl(X0,sK61_skl,X1)),X1)
      | sK61_skl = relation_rng_restriction(X0,X1)
      | ~ relation(X1)
      | in(ordered_pair(sK4_skl(X0,sK61_skl,X1),sK9_skl(sK4_skl(X0,sK61_skl,X1),relation_inverse_image(sK61_skl,X2),X2,sK61_skl)),sK61_skl)
      | ~ relation(sK61_skl) ),
    inference(resolution,[status(thm)],[f895,f1626]) ).

fof(f2181,plain,
    ! [X0,X1,X2] :
      ( ~ in(sK3_skl(X0,sK61_skl,X1),X2)
      | in(ordered_pair(sK2_skl(X0,sK61_skl,X1),sK3_skl(X0,sK61_skl,X1)),X1)
      | sK61_skl = relation_dom_restriction(X1,X0)
      | ~ relation(X1)
      | in(ordered_pair(sK2_skl(X0,sK61_skl,X1),sK9_skl(sK2_skl(X0,sK61_skl,X1),relation_inverse_image(sK61_skl,X2),X2,sK61_skl)),sK61_skl)
      | ~ relation(sK61_skl) ),
    inference(resolution,[status(thm)],[f895,f1421]) ).

fof(f2184,plain,
    ( ~ sQ0_spl
    | in(ordered_pair(sK62_skl,sK9_skl(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl),sK63_skl,sK61_skl)),sK61_skl)
    | ~ relation(sK61_skl) ),
    inference(resolution,[status(thm)],[f895,f863]) ).

fof(f2185,definition,
    ! [X0,X1,X2] :
      ( sQ72_spl
    <=> ( ~ in(sK5_skl(X0,sK61_skl,X1),X2)
        | in(ordered_pair(sK4_skl(X0,sK61_skl,X1),sK5_skl(X0,sK61_skl,X1)),X1)
        | sK61_skl = relation_rng_restriction(X0,X1)
        | ~ relation(X1)
        | in(ordered_pair(sK4_skl(X0,sK61_skl,X1),sK9_skl(sK4_skl(X0,sK61_skl,X1),relation_inverse_image(sK61_skl,X2),X2,sK61_skl)),sK61_skl) ) ),
    introduced(definition,[new_symbols(definition,[sQ72_spl])],[split_symbol_definition]) ).

fof(f2188,plain,
    ( sQ72_spl
    | ~ sQ31_spl ),
    inference(split_clause,[status(thm)],[f2174,f1430,f2185]) ).

fof(f2189,definition,
    ! [X0,X1,X2] :
      ( sQ73_spl
    <=> ( ~ in(sK3_skl(X0,sK61_skl,X1),X2)
        | in(ordered_pair(sK2_skl(X0,sK61_skl,X1),sK3_skl(X0,sK61_skl,X1)),X1)
        | sK61_skl = relation_dom_restriction(X1,X0)
        | ~ relation(X1)
        | in(ordered_pair(sK2_skl(X0,sK61_skl,X1),sK9_skl(sK2_skl(X0,sK61_skl,X1),relation_inverse_image(sK61_skl,X2),X2,sK61_skl)),sK61_skl) ) ),
    introduced(definition,[new_symbols(definition,[sQ73_spl])],[split_symbol_definition]) ).

fof(f2192,plain,
    ( sQ73_spl
    | ~ sQ31_spl ),
    inference(split_clause,[status(thm)],[f2181,f1430,f2189]) ).

fof(f2193,definition,
    ( sQ74_spl
  <=> in(ordered_pair(sK62_skl,sK9_skl(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl),sK63_skl,sK61_skl)),sK61_skl) ),
    introduced(definition,[new_symbols(definition,[sQ74_spl])],[split_symbol_definition]) ).

fof(f2194,plain,
    ( ~ sQ74_spl
    | in(ordered_pair(sK62_skl,sK9_skl(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl),sK63_skl,sK61_skl)),sK61_skl) ),
    inference(component_clause,[status(thm)],[f2193]) ).

fof(f2196,plain,
    ( ~ sQ0_spl
    | sQ74_spl
    | ~ sQ31_spl ),
    inference(split_clause,[status(thm)],[f2184,f1430,f2193,f862]) ).

fof(f2237,plain,
    ( ~ sQ4_spl
    | ~ sQ74_spl
    | ~ in(sK9_skl(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl),sK63_skl,sK61_skl),sK63_skl) ),
    inference(resolution,[status(thm)],[f2194,f974]) ).

fof(f2252,plain,
    ! [X0] :
      ( ~ empty(empty_set)
      | ~ relation(empty_set)
      | ~ in(X0,identity_relation(identity_relation(empty_set))) ),
    inference(paramodulation,[status(thm)],[f777,f1818]) ).

fof(f2254,definition,
    ! [X0] :
      ( sQ75_spl
    <=> ~ in(X0,identity_relation(identity_relation(empty_set))) ),
    introduced(definition,[new_symbols(definition,[sQ75_spl])],[split_symbol_definition]) ).

fof(f2257,plain,
    ( ~ sQ29_spl
    | ~ sQ26_spl
    | sQ75_spl ),
    inference(split_clause,[status(thm)],[f2252,f2254,f1140,f1355]) ).

fof(f2265,plain,
    ( relation_inverse(empty_set) = empty_set
    | relation_rng(relation_inverse(identity_relation(empty_set))) != empty_set ),
    inference(paramodulation,[status(thm)],[f1359,f1995]) ).

fof(f2266,definition,
    ( sQ76_spl
  <=> relation_rng(relation_inverse(identity_relation(empty_set))) = empty_set ),
    introduced(definition,[new_symbols(definition,[sQ76_spl])],[split_symbol_definition]) ).

fof(f2269,plain,
    ( sQ56_spl
    | ~ sQ76_spl ),
    inference(split_clause,[status(thm)],[f2265,f2266,f2010]) ).

fof(f2272,plain,
    ! [X0,X1,X2] :
      ( ~ sQ56_spl
      | ~ in(X2,X1)
      | ~ in(ordered_pair(X0,X2),empty_set)
      | in(X0,relation_inverse_image(relation_inverse(empty_set),X1))
      | ~ relation(empty_set) ),
    inference(paramodulation,[status(thm)],[f2011,f1555]) ).

fof(f2273,plain,
    ! [X0,X1] :
      ( ~ sQ56_spl
      | ~ in(ordered_pair(X1,X0),empty_set)
      | in(X0,relation_rng(relation_inverse(empty_set)))
      | ~ relation(empty_set) ),
    inference(paramodulation,[status(thm)],[f2011,f1554]) ).

fof(f2275,definition,
    ! [X0,X1,X2] :
      ( sQ77_spl
    <=> ( ~ in(X2,X1)
        | ~ in(ordered_pair(X0,X2),empty_set)
        | in(X0,relation_inverse_image(relation_inverse(empty_set),X1)) ) ),
    introduced(definition,[new_symbols(definition,[sQ77_spl])],[split_symbol_definition]) ).

fof(f2278,plain,
    ( ~ sQ56_spl
    | sQ77_spl
    | ~ sQ26_spl ),
    inference(split_clause,[status(thm)],[f2272,f1140,f2275,f2010]) ).

fof(f2279,definition,
    ! [X0,X1] :
      ( sQ78_spl
    <=> ( ~ in(ordered_pair(X1,X0),empty_set)
        | in(X0,relation_rng(relation_inverse(empty_set))) ) ),
    introduced(definition,[new_symbols(definition,[sQ78_spl])],[split_symbol_definition]) ).

fof(f2282,plain,
    ( ~ sQ56_spl
    | sQ78_spl
    | ~ sQ26_spl ),
    inference(split_clause,[status(thm)],[f2273,f1140,f2279,f2010]) ).

fof(f2357,plain,
    ( ~ sQ4_spl
    | ~ sQ74_spl
    | ~ in(sK62_skl,relation_inverse_image(sK61_skl,sK63_skl))
    | ~ relation(sK61_skl) ),
    inference(resolution,[status(thm)],[f2237,f896]) ).

fof(f2358,plain,
    ( ~ sQ4_spl
    | ~ sQ74_spl
    | ~ sQ0_spl
    | ~ sQ31_spl ),
    inference(split_clause,[status(thm)],[f2357,f1430,f862,f2193,f877]) ).

fof(f2359,plain,
    $false,
    inference(sat_refutation,[status(thm)],[f872,f876,f880,f973,f998,f1010,f1033,f1079,f1095,f1106,f1116,f1146,f1148,f1191,f1433,f1450,f1460,f1479,f1538,f1540,f1599,f1603,f1605,f1653,f1663,f1672,f1680,f1695,f1726,f1728,f1800,f1815,f2013,f2029,f2046,f2050,f2054,f2063,f2067,f2071,f2074,f2079,f2085,f2104,f2123,f2128,f2146,f2188,f2192,f2196,f2257,f2269,f2278,f2282,f2358]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.04  % Problem  : SEU208+2 : TPTP v9.3.1. Released v3.3.0.
% 0.00/0.05  % Command  : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.12/0.42  % Computer : n007.cluster.edu
% 0.12/0.42  % Model    : x86_64 x86_64
% 0.12/0.42  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.42  % Memory   : 8046.5625MB
% 0.12/0.42  % OS       : Linux 6.8.0-71-generic
% 0.12/0.43  % CPULimit : 300
% 0.12/0.43  % WCLimit  : 300
% 0.12/0.43  % DateTime : Mon Sep 21 05:56:06 UTC 2026
% 0.12/0.43  % CPUTime  : 
% 0.12/0.46  % Drodi V4.1.1
% 0.25/0.74  % Refutation found
% 0.25/0.74  % SZS status Theorem for theBenchmark: Theorem is valid
% 0.25/0.74  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.25/0.76  % Elapsed time: 0.325712 seconds
% 0.25/0.76  % CPU time: 2.130185 seconds
% 0.25/0.76  % Total memory used: 136.483 MB
% 0.25/0.76  % Net memory used: 133.102 MB
%------------------------------------------------------------------------------