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Drodi---4.1.1.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : Drodi---4.1.1
% Problem  : SEU266+1 : TPTP v9.3.1. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p

% Computer : n005.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 02:19:57 PM UTC 2026

% Result   : Theorem 0.18s 0.62s
% Output   : CNFRefutation 0.18s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   19
%            Number of leaves      :   11
% Syntax   : Number of formulae    :   81 (  10 unt;   0 def)
%            Number of atoms       :  247 (  49 equ)
%            Maximal formula atoms :   11 (   3 avg)
%            Number of connectives :  273 ( 107   ~; 121   |;  25   &)
%                                         (   8 <=>;  10  =>;   0  <=;   2 <~>)
%            Maximal formula depth :   12 (   6 avg)
%            Maximal term depth    :    4 (   1 avg)
%            Number of predicates  :    8 (   6 usr;   1 prp; 0-3 aty)
%            Number of functors    :   14 (  14 usr;   4 con; 0-3 aty)
%            Number of variables   :  190 ( 171   !;  19   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f2,axiom,
    ! [A,B,C] :
      ( element(C,powerset(cartesian_product2(A,B)))
     => relation(C) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f4,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(f14,axiom,
    ! [A,B,C] :
      ( relation_of2(C,A,B)
     => element(relation_rng_as_subset(A,B,C),powerset(B)) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f17,axiom,
    ! [A,B,C] :
      ( relation_of2_as_subset(C,A,B)
     => element(C,powerset(cartesian_product2(A,B))) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f25,axiom,
    ! [A,B,C] :
      ( relation_of2(C,A,B)
     => relation_rng_as_subset(A,B,C) = relation_rng(C) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f26,axiom,
    ! [A,B,C] :
      ( relation_of2_as_subset(C,A,B)
    <=> relation_of2(C,A,B) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f30,conjecture,
    ! [A,B,C] :
      ( relation_of2_as_subset(C,A,B)
     => ( ! [D] :
            ~ ( ! [E] : ~ in(ordered_pair(E,D),C)
              & in(D,B) )
      <=> relation_rng_as_subset(A,B,C) = B ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f31,negated_conjecture,
    ~ ! [A,B,C] :
        ( relation_of2_as_subset(C,A,B)
       => ( ! [D] :
              ~ ( ! [E] : ~ in(ordered_pair(E,D),C)
                & in(D,B) )
        <=> relation_rng_as_subset(A,B,C) = B ) ),
    inference(negated_conjecture,[status(cth)],[f30]) ).

fof(f32,axiom,
    ! [A,B] :
      ( element(A,B)
     => ( in(A,B)
        | empty(B) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f33,axiom,
    ! [A,B] :
      ( ! [C] :
          ( in(C,A)
        <=> in(C,B) )
     => A = B ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f35,axiom,
    ! [A,B,C] :
      ( ( element(B,powerset(C))
        & in(A,B) )
     => element(A,C) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f36,axiom,
    ! [A,B,C] :
      ~ ( empty(C)
        & element(B,powerset(C))
        & in(A,B) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).

fof(f42,plain,
    ! [A,B,C] :
      ( relation(C)
      | ~ element(C,powerset(cartesian_product2(A,B))) ),
    inference(pre_NNF_transformation,[status(thm)],[f2]) ).

fof(f43,plain,
    ! [C] :
      ( relation(C)
      | ! [A,B] : ~ element(C,powerset(cartesian_product2(A,B))) ),
    inference(miniscoping,[status(thm)],[f42]) ).

fof(f44,plain,
    ! [X0,X1,X2] :
      ( relation(X0)
      | ~ element(X0,powerset(cartesian_product2(X1,X2))) ),
    inference(cnf_transformation,[status(thm)],[f43]) ).

fof(f46,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)],[f4]) ).

fof(f47,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)],[f46]) ).

fof(f48,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)],[f47]) ).

fof(f49,plain,
    ! [A] :
      ( ( ! [B] :
            ( ( ( in(ordered_pair(sK2_skl(B,A),sK1_skl(B,A)),A)
                | in(sK1_skl(B,A),B) )
              & ( ! [D] : ~ in(ordered_pair(D,sK1_skl(B,A)),A)
                | ~ in(sK1_skl(B,A),B) ) )
            | B = relation_rng(A) )
        & ! [B] :
            ( ( ! [C] :
                  ( ! [D] : ~ in(ordered_pair(D,C),A)
                  | in(C,B) )
              & ! [C] :
                  ( in(ordered_pair(sK0_skl(C,B,A),C),A)
                  | ~ in(C,B) ) )
            | B != relation_rng(A) ) )
      | ~ relation(A) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK0_skl,sK1_skl,sK2_skl]),skolemize(D,sK0_skl(C,B,A)),skolemize(C,sK1_skl(B,A)),skolemize(D,sK2_skl(B,A))],[f48]) ).

fof(f50,plain,
    ! [X0,X1,X2] :
      ( in(ordered_pair(sK0_skl(X2,X1,X0),X2),X0)
      | ~ in(X2,X1)
      | X1 != relation_rng(X0)
      | ~ relation(X0) ),
    inference(cnf_transformation,[status(thm)],[f49]) ).

fof(f51,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)],[f49]) ).

fof(f55,plain,
    ! [A,B,C] :
      ( element(relation_rng_as_subset(A,B,C),powerset(B))
      | ~ relation_of2(C,A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f14]) ).

fof(f56,plain,
    ! [X0,X1,X2] :
      ( element(relation_rng_as_subset(X1,X2,X0),powerset(X2))
      | ~ relation_of2(X0,X1,X2) ),
    inference(cnf_transformation,[status(thm)],[f55]) ).

fof(f57,plain,
    ! [A,B,C] :
      ( element(C,powerset(cartesian_product2(A,B)))
      | ~ relation_of2_as_subset(C,A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f17]) ).

fof(f58,plain,
    ! [X0,X1,X2] :
      ( element(X0,powerset(cartesian_product2(X1,X2)))
      | ~ relation_of2_as_subset(X0,X1,X2) ),
    inference(cnf_transformation,[status(thm)],[f57]) ).

fof(f71,plain,
    ! [A,B,C] :
      ( relation_rng_as_subset(A,B,C) = relation_rng(C)
      | ~ relation_of2(C,A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f25]) ).

fof(f72,plain,
    ! [X0,X1,X2] :
      ( relation_rng_as_subset(X1,X2,X0) = relation_rng(X0)
      | ~ relation_of2(X0,X1,X2) ),
    inference(cnf_transformation,[status(thm)],[f71]) ).

fof(f73,plain,
    ! [A,B,C] :
      ( ( ~ relation_of2(C,A,B)
        | relation_of2_as_subset(C,A,B) )
      & ( relation_of2(C,A,B)
        | ~ relation_of2_as_subset(C,A,B) ) ),
    inference(NNF_transformation,[status(thm)],[f26]) ).

fof(f74,plain,
    ( ! [A,B,C] :
        ( ~ relation_of2(C,A,B)
        | relation_of2_as_subset(C,A,B) )
    & ! [A,B,C] :
        ( relation_of2(C,A,B)
        | ~ relation_of2_as_subset(C,A,B) ) ),
    inference(miniscoping,[status(thm)],[f73]) ).

fof(f75,plain,
    ! [X0,X1,X2] :
      ( relation_of2(X0,X1,X2)
      | ~ relation_of2_as_subset(X0,X1,X2) ),
    inference(cnf_transformation,[status(thm)],[f74]) ).

fof(f85,plain,
    ? [A,B,C] :
      ( ( ! [D] :
            ( ? [E] : in(ordered_pair(E,D),C)
            | ~ in(D,B) )
      <~> relation_rng_as_subset(A,B,C) = B )
      & relation_of2_as_subset(C,A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f31]) ).

fof(f86,plain,
    ? [A,B,C] :
      ( ( relation_rng_as_subset(A,B,C) != B
        | ? [D] :
            ( ! [E] : ~ in(ordered_pair(E,D),C)
            & in(D,B) ) )
      & ( relation_rng_as_subset(A,B,C) = B
        | ! [D] :
            ( ? [E] : in(ordered_pair(E,D),C)
            | ~ in(D,B) ) )
      & relation_of2_as_subset(C,A,B) ),
    inference(NNF_transformation,[status(thm)],[f85]) ).

fof(f87,plain,
    ( ( relation_rng_as_subset(sK8_skl,sK9_skl,sK10_skl) != sK9_skl
      | ( ! [E] : ~ in(ordered_pair(E,sK12_skl),sK10_skl)
        & in(sK12_skl,sK9_skl) ) )
    & ( relation_rng_as_subset(sK8_skl,sK9_skl,sK10_skl) = sK9_skl
      | ! [D] :
          ( in(ordered_pair(sK11_skl(D),D),sK10_skl)
          | ~ in(D,sK9_skl) ) )
    & relation_of2_as_subset(sK10_skl,sK8_skl,sK9_skl) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK8_skl,sK9_skl,sK10_skl,sK11_skl,sK12_skl]),skolemize(A,sK8_skl),skolemize(B,sK9_skl),skolemize(C,sK10_skl),skolemize(E,sK11_skl(D)),skolemize(D,sK12_skl)],[f86]) ).

fof(f88,plain,
    relation_of2_as_subset(sK10_skl,sK8_skl,sK9_skl),
    inference(cnf_transformation,[status(thm)],[f87]) ).

fof(f89,plain,
    ! [X0] :
      ( relation_rng_as_subset(sK8_skl,sK9_skl,sK10_skl) = sK9_skl
      | in(ordered_pair(sK11_skl(X0),X0),sK10_skl)
      | ~ in(X0,sK9_skl) ),
    inference(cnf_transformation,[status(thm)],[f87]) ).

fof(f90,plain,
    ( relation_rng_as_subset(sK8_skl,sK9_skl,sK10_skl) != sK9_skl
    | in(sK12_skl,sK9_skl) ),
    inference(cnf_transformation,[status(thm)],[f87]) ).

fof(f91,plain,
    ! [X0] :
      ( relation_rng_as_subset(sK8_skl,sK9_skl,sK10_skl) != sK9_skl
      | ~ in(ordered_pair(X0,sK12_skl),sK10_skl) ),
    inference(cnf_transformation,[status(thm)],[f87]) ).

fof(f92,plain,
    ! [A,B] :
      ( in(A,B)
      | empty(B)
      | ~ element(A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f32]) ).

fof(f93,plain,
    ! [X0,X1] :
      ( in(X0,X1)
      | empty(X1)
      | ~ element(X0,X1) ),
    inference(cnf_transformation,[status(thm)],[f92]) ).

fof(f94,plain,
    ! [A,B] :
      ( A = B
      | ? [C] :
          ( in(C,A)
        <~> in(C,B) ) ),
    inference(pre_NNF_transformation,[status(thm)],[f33]) ).

fof(f95,plain,
    ! [A,B] :
      ( A = B
      | ? [C] :
          ( ( ~ in(C,B)
            | ~ in(C,A) )
          & ( in(C,B)
            | in(C,A) ) ) ),
    inference(NNF_transformation,[status(thm)],[f94]) ).

fof(f96,plain,
    ! [A,B] :
      ( A = B
      | ( ( ~ in(sK13_skl(B,A),B)
          | ~ in(sK13_skl(B,A),A) )
        & ( in(sK13_skl(B,A),B)
          | in(sK13_skl(B,A),A) ) ) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK13_skl]),skolemize(C,sK13_skl(B,A))],[f95]) ).

fof(f97,plain,
    ! [X0,X1] :
      ( X1 = X0
      | in(sK13_skl(X0,X1),X0)
      | in(sK13_skl(X0,X1),X1) ),
    inference(cnf_transformation,[status(thm)],[f96]) ).

fof(f98,plain,
    ! [X0,X1] :
      ( X1 = X0
      | ~ in(sK13_skl(X0,X1),X0)
      | ~ in(sK13_skl(X0,X1),X1) ),
    inference(cnf_transformation,[status(thm)],[f96]) ).

fof(f103,plain,
    ! [A,B,C] :
      ( element(A,C)
      | ~ element(B,powerset(C))
      | ~ in(A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f35]) ).

fof(f104,plain,
    ! [A,C] :
      ( element(A,C)
      | ! [B] :
          ( ~ element(B,powerset(C))
          | ~ in(A,B) ) ),
    inference(miniscoping,[status(thm)],[f103]) ).

fof(f105,plain,
    ! [X0,X1,X2] :
      ( element(X0,X2)
      | ~ element(X1,powerset(X2))
      | ~ in(X0,X1) ),
    inference(cnf_transformation,[status(thm)],[f104]) ).

fof(f106,plain,
    ! [A,B,C] :
      ( ~ empty(C)
      | ~ element(B,powerset(C))
      | ~ in(A,B) ),
    inference(pre_NNF_transformation,[status(thm)],[f36]) ).

fof(f107,plain,
    ! [C] :
      ( ~ empty(C)
      | ! [B] :
          ( ~ element(B,powerset(C))
          | ! [A] : ~ in(A,B) ) ),
    inference(miniscoping,[status(thm)],[f106]) ).

fof(f108,plain,
    ! [X0,X1,X2] :
      ( ~ empty(X2)
      | ~ element(X1,powerset(X2))
      | ~ in(X0,X1) ),
    inference(cnf_transformation,[status(thm)],[f107]) ).

fof(f117,plain,
    ! [X0,X1] :
      ( in(ordered_pair(sK0_skl(X1,relation_rng(X0),X0),X1),X0)
      | ~ in(X1,relation_rng(X0))
      | ~ relation(X0) ),
    inference(destructive_equality_resolution,[status(thm)],[f50]) ).

fof(f118,plain,
    ! [X0,X1,X2] :
      ( ~ in(ordered_pair(X2,X1),X0)
      | in(X1,relation_rng(X0))
      | ~ relation(X0) ),
    inference(destructive_equality_resolution,[status(thm)],[f51]) ).

fof(f122,plain,
    relation_of2(sK10_skl,sK8_skl,sK9_skl),
    inference(resolution,[status(thm)],[f75,f88]) ).

fof(f124,plain,
    relation_rng_as_subset(sK8_skl,sK9_skl,sK10_skl) = relation_rng(sK10_skl),
    inference(resolution,[status(thm)],[f72,f122]) ).

fof(f126,plain,
    ! [X0] :
      ( relation_rng(sK10_skl) = sK9_skl
      | in(ordered_pair(sK11_skl(X0),X0),sK10_skl)
      | ~ in(X0,sK9_skl) ),
    inference(backward_demodulation,[status(thm)],[f124,f89]) ).

fof(f127,plain,
    ! [X0] :
      ( relation_rng(sK10_skl) != sK9_skl
      | ~ in(ordered_pair(X0,sK12_skl),sK10_skl) ),
    inference(backward_demodulation,[status(thm)],[f124,f91]) ).

fof(f128,plain,
    ( relation_rng(sK10_skl) != sK9_skl
    | in(sK12_skl,sK9_skl) ),
    inference(backward_demodulation,[status(thm)],[f124,f90]) ).

fof(f131,plain,
    ( element(relation_rng(sK10_skl),powerset(sK9_skl))
    | ~ relation_of2(sK10_skl,sK8_skl,sK9_skl) ),
    inference(paramodulation,[status(thm)],[f124,f56]) ).

fof(f132,plain,
    element(relation_rng(sK10_skl),powerset(sK9_skl)),
    inference(forward_subsumption_resolution,[status(thm)],[f131,f122]) ).

fof(f283,plain,
    ! [X0,X1,X2] :
      ( relation(X0)
      | ~ relation_of2_as_subset(X0,X1,X2) ),
    inference(resolution,[status(thm)],[f58,f44]) ).

fof(f312,plain,
    ! [X0] :
      ( relation_rng(sK10_skl) = sK9_skl
      | in(ordered_pair(sK11_skl(sK13_skl(sK9_skl,X0)),sK13_skl(sK9_skl,X0)),sK10_skl)
      | X0 = sK9_skl
      | in(sK13_skl(sK9_skl,X0),X0) ),
    inference(resolution,[status(thm)],[f97,f126]) ).

fof(f337,plain,
    ! [X0] :
      ( in(sK13_skl(sK9_skl,X0),relation_rng(sK10_skl))
      | ~ relation(sK10_skl)
      | relation_rng(sK10_skl) = sK9_skl
      | X0 = sK9_skl
      | in(sK13_skl(sK9_skl,X0),X0) ),
    inference(resolution,[status(thm)],[f312,f118]) ).

fof(f353,plain,
    relation(sK10_skl),
    inference(resolution,[status(thm)],[f283,f88]) ).

fof(f357,plain,
    ! [X0] :
      ( in(sK13_skl(sK9_skl,X0),relation_rng(sK10_skl))
      | relation_rng(sK10_skl) = sK9_skl
      | X0 = sK9_skl
      | in(sK13_skl(sK9_skl,X0),X0) ),
    inference(backward_subsumption_resolution,[status(thm)],[f337,f353]) ).

fof(f412,plain,
    ! [X0,X1,X2] :
      ( in(X0,X2)
      | empty(X2)
      | ~ element(X1,powerset(X2))
      | ~ in(X0,X1) ),
    inference(resolution,[status(thm)],[f105,f93]) ).

fof(f413,plain,
    ! [X0,X1,X2] :
      ( in(X0,X2)
      | ~ element(X1,powerset(X2))
      | ~ in(X0,X1) ),
    inference(forward_subsumption_resolution,[status(thm)],[f412,f108]) ).

fof(f427,plain,
    ! [X0] :
      ( in(X0,sK9_skl)
      | ~ in(X0,relation_rng(sK10_skl)) ),
    inference(resolution,[status(thm)],[f413,f132]) ).

fof(f743,plain,
    ( relation_rng(sK10_skl) = sK9_skl
    | ~ in(sK13_skl(sK9_skl,relation_rng(sK10_skl)),sK9_skl)
    | relation_rng(sK10_skl) = sK9_skl
    | relation_rng(sK10_skl) = sK9_skl ),
    inference(resolution,[status(thm)],[f357,f98]) ).

fof(f754,plain,
    ( in(sK13_skl(sK9_skl,relation_rng(sK10_skl)),sK9_skl)
    | relation_rng(sK10_skl) = sK9_skl
    | relation_rng(sK10_skl) = sK9_skl ),
    inference(resolution,[status(thm)],[f357,f427]) ).

fof(f769,plain,
    ( ~ in(sK13_skl(sK9_skl,relation_rng(sK10_skl)),sK9_skl)
    | relation_rng(sK10_skl) = sK9_skl ),
    inference(duplicate_literals_removal,[status(thm)],[f743]) ).

fof(f771,plain,
    ( in(sK13_skl(sK9_skl,relation_rng(sK10_skl)),sK9_skl)
    | relation_rng(sK10_skl) = sK9_skl ),
    inference(duplicate_literals_removal,[status(thm)],[f754]) ).

fof(f813,plain,
    ! [X0] :
      ( sK9_skl != sK9_skl
      | ~ in(ordered_pair(X0,sK12_skl),sK10_skl) ),
    inference(backward_demodulation,[status(thm)],[f857,f127]) ).

fof(f816,plain,
    ( sK9_skl != sK9_skl
    | in(sK12_skl,sK9_skl) ),
    inference(backward_demodulation,[status(thm)],[f857,f128]) ).

fof(f857,plain,
    relation_rng(sK10_skl) = sK9_skl,
    inference(forward_subsumption_resolution,[status(thm)],[f771,f769]) ).

fof(f870,plain,
    ! [X0] : ~ in(ordered_pair(X0,sK12_skl),sK10_skl),
    inference(trivial_equality_resolution,[status(thm)],[f813]) ).

fof(f872,plain,
    in(sK12_skl,sK9_skl),
    inference(trivial_equality_resolution,[status(thm)],[f816]) ).

fof(f888,plain,
    ! [X0] :
      ( in(ordered_pair(sK0_skl(X0,relation_rng(sK10_skl),sK10_skl),X0),sK10_skl)
      | ~ in(X0,sK9_skl)
      | ~ relation(sK10_skl) ),
    inference(paramodulation,[status(thm)],[f857,f117]) ).

fof(f889,plain,
    ! [X0] :
      ( in(ordered_pair(sK0_skl(X0,sK9_skl,sK10_skl),X0),sK10_skl)
      | ~ in(X0,sK9_skl)
      | ~ relation(sK10_skl) ),
    inference(forward_demodulation,[status(thm)],[f857,f888]) ).

fof(f890,plain,
    ! [X0] :
      ( in(ordered_pair(sK0_skl(X0,sK9_skl,sK10_skl),X0),sK10_skl)
      | ~ in(X0,sK9_skl) ),
    inference(forward_subsumption_resolution,[status(thm)],[f889,f353]) ).

fof(f1428,plain,
    ~ in(sK12_skl,sK9_skl),
    inference(resolution,[status(thm)],[f890,f870]) ).

fof(f1434,plain,
    $false,
    inference(forward_subsumption_resolution,[status(thm)],[f1428,f872]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05  % Problem  : SEU266+1 : TPTP v9.3.1. Released v3.3.0.
% 0.00/0.06  % Command  : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.18/0.43  % Computer : n005.cluster.edu
% 0.18/0.43  % Model    : x86_64 x86_64
% 0.18/0.43  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.18/0.43  % Memory   : 8046.5625MB
% 0.18/0.43  % OS       : Linux 6.8.0-71-generic
% 0.18/0.43  % CPULimit : 300
% 0.18/0.43  % WCLimit  : 300
% 0.18/0.43  % DateTime : Mon Sep 21 06:04:47 UTC 2026
% 0.18/0.43  % CPUTime  : 
% 0.18/0.45  % Drodi V4.1.1
% 0.18/0.62  % Refutation found
% 0.18/0.62  % SZS status Theorem for theBenchmark: Theorem is valid
% 0.18/0.62  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.18/0.66  % Elapsed time: 0.208950 seconds
% 0.18/0.66  % CPU time: 1.221653 seconds
% 0.18/0.66  % Total memory used: 121.340 MB
% 0.18/0.66  % Net memory used: 119.684 MB
%------------------------------------------------------------------------------