TSTP Solution File: SEU406+1 by Metis---2.4

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Metis---2.4
% Problem  : SEU406+1 : TPTP v8.1.0. Released v3.4.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : metis --show proof --show saturation %s

% Computer : n017.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8042.1875MB
% OS       : Linux 3.10.0-693.el7.x86_64
% CPULimit : 300s
% WCLimit  : 600s
% DateTime : Tue Jul 19 12:40:55 EDT 2022

% Result   : Theorem 199.34s 199.51s
% Output   : CNFRefutation 199.34s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   25
%            Number of leaves      :    7
% Syntax   : Number of formulae    :  104 (  39 unt;   0 def)
%            Number of atoms       :  315 (  42 equ)
%            Maximal formula atoms :   20 (   3 avg)
%            Number of connectives :  353 ( 142   ~; 126   |;  71   &)
%                                         (  10 <=>;   4  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   14 (   4 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of predicates  :    4 (   1 usr;   1 prp; 0-2 aty)
%            Number of functors    :   11 (  11 usr;   8 con; 0-3 aty)
%            Number of variables   :  173 (  13 sgn  70   !;  12   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(t1_latsum_1,conjecture,
    ! [A,B,C,D] :
      ~ ( r2_hidden(A,k2_xboole_0(C,D))
        & r2_hidden(B,k2_xboole_0(C,D))
        & ~ ( r2_hidden(A,k4_xboole_0(C,D))
            & r2_hidden(B,k4_xboole_0(C,D)) )
        & ~ ( r2_hidden(A,D)
            & r2_hidden(B,D) )
        & ~ ( r2_hidden(A,k4_xboole_0(C,D))
            & r2_hidden(B,D) )
        & ~ ( r2_hidden(A,D)
            & r2_hidden(B,k4_xboole_0(C,D)) ) ) ).

fof(d2_xboole_0,axiom,
    ! [A,B,C] :
      ( C = k2_xboole_0(A,B)
    <=> ! [D] :
          ( r2_hidden(D,C)
        <=> ( r2_hidden(D,A)
            | r2_hidden(D,B) ) ) ) ).

fof(t39_xboole_1,axiom,
    ! [A,B] : k2_xboole_0(A,k4_xboole_0(B,A)) = k2_xboole_0(A,B) ).

fof(subgoal_0,plain,
    ! [A,B,C,D] :
      ( ( r2_hidden(A,k2_xboole_0(C,D))
        & r2_hidden(B,k2_xboole_0(C,D))
        & ~ ( r2_hidden(A,k4_xboole_0(C,D))
            & r2_hidden(B,k4_xboole_0(C,D)) )
        & ~ ( r2_hidden(A,D)
            & r2_hidden(B,D) )
        & ~ ( r2_hidden(A,k4_xboole_0(C,D))
            & r2_hidden(B,D) ) )
     => r2_hidden(A,D) ),
    inference(strip,[],[t1_latsum_1]) ).

fof(subgoal_1,plain,
    ! [A,B,C,D] :
      ( ( r2_hidden(A,k2_xboole_0(C,D))
        & r2_hidden(B,k2_xboole_0(C,D))
        & ~ ( r2_hidden(A,k4_xboole_0(C,D))
            & r2_hidden(B,k4_xboole_0(C,D)) )
        & ~ ( r2_hidden(A,D)
            & r2_hidden(B,D) )
        & ~ ( r2_hidden(A,k4_xboole_0(C,D))
            & r2_hidden(B,D) )
        & r2_hidden(A,D) )
     => r2_hidden(B,k4_xboole_0(C,D)) ),
    inference(strip,[],[t1_latsum_1]) ).

fof(negate_0_0,plain,
    ~ ! [A,B,C,D] :
        ( ( r2_hidden(A,k2_xboole_0(C,D))
          & r2_hidden(B,k2_xboole_0(C,D))
          & ~ ( r2_hidden(A,k4_xboole_0(C,D))
              & r2_hidden(B,k4_xboole_0(C,D)) )
          & ~ ( r2_hidden(A,D)
              & r2_hidden(B,D) )
          & ~ ( r2_hidden(A,k4_xboole_0(C,D))
              & r2_hidden(B,D) ) )
       => r2_hidden(A,D) ),
    inference(negate,[],[subgoal_0]) ).

fof(normalize_0_0,plain,
    ! [A,B,C] :
      ( C != k2_xboole_0(A,B)
    <=> ? [D] :
          ( ~ r2_hidden(D,C)
        <=> ( r2_hidden(D,A)
            | r2_hidden(D,B) ) ) ),
    inference(canonicalize,[],[d2_xboole_0]) ).

fof(normalize_0_1,plain,
    ! [A,B,C] :
      ( C != k2_xboole_0(A,B)
    <=> ? [D] :
          ( ~ r2_hidden(D,C)
        <=> ( r2_hidden(D,A)
            | r2_hidden(D,B) ) ) ),
    inference(specialize,[],[normalize_0_0]) ).

fof(normalize_0_2,plain,
    ! [A,B,C,D] :
      ( ( C != k2_xboole_0(A,B)
        | ~ r2_hidden(D,A)
        | r2_hidden(D,C) )
      & ( C != k2_xboole_0(A,B)
        | ~ r2_hidden(D,B)
        | r2_hidden(D,C) )
      & ( ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),A)
        | ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),C)
        | C = k2_xboole_0(A,B) )
      & ( ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),B)
        | ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),C)
        | C = k2_xboole_0(A,B) )
      & ( C != k2_xboole_0(A,B)
        | ~ r2_hidden(D,C)
        | r2_hidden(D,A)
        | r2_hidden(D,B) )
      & ( C = k2_xboole_0(A,B)
        | r2_hidden(skolemFOFtoCNF_D(A,B,C),A)
        | r2_hidden(skolemFOFtoCNF_D(A,B,C),B)
        | r2_hidden(skolemFOFtoCNF_D(A,B,C),C) ) ),
    inference(clausify,[],[normalize_0_1]) ).

fof(normalize_0_3,plain,
    ! [A,B,C,D] :
      ( C != k2_xboole_0(A,B)
      | ~ r2_hidden(D,B)
      | r2_hidden(D,C) ),
    inference(conjunct,[],[normalize_0_2]) ).

fof(normalize_0_4,plain,
    ? [A,B,C,D] :
      ( ~ r2_hidden(A,D)
      & r2_hidden(A,k2_xboole_0(C,D))
      & r2_hidden(B,k2_xboole_0(C,D))
      & ( ~ r2_hidden(A,D)
        | ~ r2_hidden(B,D) )
      & ( ~ r2_hidden(A,k4_xboole_0(C,D))
        | ~ r2_hidden(B,D) )
      & ( ~ r2_hidden(A,k4_xboole_0(C,D))
        | ~ r2_hidden(B,k4_xboole_0(C,D)) ) ),
    inference(canonicalize,[],[negate_0_0]) ).

fof(normalize_0_5,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1)
    & r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    & r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    & ( ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
      | ~ r2_hidden(skolemFOFtoCNF_B_1,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) )
    & ( ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
      | ~ r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) )
    & ( ~ r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1)
      | ~ r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) ) ),
    inference(skolemize,[],[normalize_0_4]) ).

fof(normalize_0_6,plain,
    r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)),
    inference(conjunct,[],[normalize_0_5]) ).

fof(normalize_0_7,plain,
    ! [A,B,C,D] :
      ( C != k2_xboole_0(A,B)
      | ~ r2_hidden(D,C)
      | r2_hidden(D,A)
      | r2_hidden(D,B) ),
    inference(conjunct,[],[normalize_0_2]) ).

fof(normalize_0_8,plain,
    ~ r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1),
    inference(conjunct,[],[normalize_0_5]) ).

fof(normalize_0_9,plain,
    ! [A,B] : k2_xboole_0(A,k4_xboole_0(B,A)) = k2_xboole_0(A,B),
    inference(canonicalize,[],[t39_xboole_1]) ).

fof(normalize_0_10,plain,
    ! [A,B] : k2_xboole_0(A,k4_xboole_0(B,A)) = k2_xboole_0(A,B),
    inference(specialize,[],[normalize_0_9]) ).

fof(normalize_0_11,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | ~ r2_hidden(skolemFOFtoCNF_B_1,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) ),
    inference(conjunct,[],[normalize_0_5]) ).

fof(normalize_0_12,plain,
    r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)),
    inference(conjunct,[],[normalize_0_5]) ).

fof(normalize_0_13,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | ~ r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) ),
    inference(conjunct,[],[normalize_0_5]) ).

cnf(refute_0_0,plain,
    ( C != k2_xboole_0(A,B)
    | ~ r2_hidden(D,B)
    | r2_hidden(D,C) ),
    inference(canonicalize,[],[normalize_0_3]) ).

cnf(refute_0_1,plain,
    ( k2_xboole_0(A,B) != k2_xboole_0(A,B)
    | ~ r2_hidden(D,B)
    | r2_hidden(D,k2_xboole_0(A,B)) ),
    inference(subst,[],[refute_0_0:[bind(C,$fot(k2_xboole_0(A,B)))]]) ).

cnf(refute_0_2,plain,
    k2_xboole_0(A,B) = k2_xboole_0(A,B),
    introduced(tautology,[refl,[$fot(k2_xboole_0(A,B))]]) ).

cnf(refute_0_3,plain,
    ( ~ r2_hidden(D,B)
    | r2_hidden(D,k2_xboole_0(A,B)) ),
    inference(resolve,[$cnf( $equal(k2_xboole_0(A,B),k2_xboole_0(A,B)) )],[refute_0_2,refute_0_1]) ).

cnf(refute_0_4,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_C)
    | r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(A,skolemFOFtoCNF_C)) ),
    inference(subst,[],[refute_0_3:[bind(B,$fot(skolemFOFtoCNF_C)),bind(D,$fot(skolemFOFtoCNF_A_2))]]) ).

cnf(refute_0_5,plain,
    r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)),
    inference(canonicalize,[],[normalize_0_6]) ).

cnf(refute_0_6,plain,
    ( C != k2_xboole_0(A,B)
    | ~ r2_hidden(D,C)
    | r2_hidden(D,A)
    | r2_hidden(D,B) ),
    inference(canonicalize,[],[normalize_0_7]) ).

cnf(refute_0_7,plain,
    ( k2_xboole_0(A,B) != k2_xboole_0(A,B)
    | ~ r2_hidden(D,k2_xboole_0(A,B))
    | r2_hidden(D,A)
    | r2_hidden(D,B) ),
    inference(subst,[],[refute_0_6:[bind(C,$fot(k2_xboole_0(A,B)))]]) ).

cnf(refute_0_8,plain,
    ( ~ r2_hidden(D,k2_xboole_0(A,B))
    | r2_hidden(D,A)
    | r2_hidden(D,B) ),
    inference(resolve,[$cnf( $equal(k2_xboole_0(A,B),k2_xboole_0(A,B)) )],[refute_0_2,refute_0_7]) ).

cnf(refute_0_9,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_C)
    | r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1) ),
    inference(subst,[],[refute_0_8:[bind(A,$fot(skolemFOFtoCNF_C)),bind(B,$fot(skolemFOFtoCNF_D_1)),bind(D,$fot(skolemFOFtoCNF_A_2))]]) ).

cnf(refute_0_10,plain,
    ( r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_C)
    | r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) )],[refute_0_5,refute_0_9]) ).

cnf(refute_0_11,plain,
    ~ r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1),
    inference(canonicalize,[],[normalize_0_8]) ).

cnf(refute_0_12,plain,
    r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_C),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1) )],[refute_0_10,refute_0_11]) ).

cnf(refute_0_13,plain,
    r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(A,skolemFOFtoCNF_C)),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_C) )],[refute_0_12,refute_0_4]) ).

cnf(refute_0_14,plain,
    r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(X_3578,skolemFOFtoCNF_C)),
    inference(subst,[],[refute_0_13:[bind(A,$fot(X_3578))]]) ).

cnf(refute_0_15,plain,
    ( ~ r2_hidden(X_593,k2_xboole_0(X_591,k4_xboole_0(B,X_591)))
    | r2_hidden(X_593,X_591)
    | r2_hidden(X_593,k4_xboole_0(B,X_591)) ),
    inference(subst,[],[refute_0_8:[bind(A,$fot(X_591)),bind(B,$fot(k4_xboole_0(B,X_591))),bind(D,$fot(X_593))]]) ).

cnf(refute_0_16,plain,
    k2_xboole_0(A,k4_xboole_0(B,A)) = k2_xboole_0(A,B),
    inference(canonicalize,[],[normalize_0_10]) ).

cnf(refute_0_17,plain,
    k2_xboole_0(X_591,k4_xboole_0(B,X_591)) = k2_xboole_0(X_591,B),
    inference(subst,[],[refute_0_16:[bind(A,$fot(X_591))]]) ).

cnf(refute_0_18,plain,
    ( k2_xboole_0(X_591,k4_xboole_0(B,X_591)) != k2_xboole_0(X_591,B)
    | ~ r2_hidden(X_593,k2_xboole_0(X_591,B))
    | r2_hidden(X_593,k2_xboole_0(X_591,k4_xboole_0(B,X_591))) ),
    introduced(tautology,[equality,[$cnf( ~ r2_hidden(X_593,k2_xboole_0(X_591,k4_xboole_0(B,X_591))) ),[1],$fot(k2_xboole_0(X_591,B))]]) ).

cnf(refute_0_19,plain,
    ( ~ r2_hidden(X_593,k2_xboole_0(X_591,B))
    | r2_hidden(X_593,k2_xboole_0(X_591,k4_xboole_0(B,X_591))) ),
    inference(resolve,[$cnf( $equal(k2_xboole_0(X_591,k4_xboole_0(B,X_591)),k2_xboole_0(X_591,B)) )],[refute_0_17,refute_0_18]) ).

cnf(refute_0_20,plain,
    ( ~ r2_hidden(X_593,k2_xboole_0(X_591,B))
    | r2_hidden(X_593,X_591)
    | r2_hidden(X_593,k4_xboole_0(B,X_591)) ),
    inference(resolve,[$cnf( r2_hidden(X_593,k2_xboole_0(X_591,k4_xboole_0(B,X_591))) )],[refute_0_19,refute_0_15]) ).

cnf(refute_0_21,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(X_3578,skolemFOFtoCNF_C))
    | r2_hidden(skolemFOFtoCNF_A_2,X_3578)
    | r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,X_3578)) ),
    inference(subst,[],[refute_0_20:[bind(B,$fot(skolemFOFtoCNF_C)),bind(X_591,$fot(X_3578)),bind(X_593,$fot(skolemFOFtoCNF_A_2))]]) ).

cnf(refute_0_22,plain,
    ( r2_hidden(skolemFOFtoCNF_A_2,X_3578)
    | r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,X_3578)) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,k2_xboole_0(X_3578,skolemFOFtoCNF_C)) )],[refute_0_14,refute_0_21]) ).

cnf(refute_0_23,plain,
    ( r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1) ),
    inference(subst,[],[refute_0_22:[bind(X_3578,$fot(skolemFOFtoCNF_D_1))]]) ).

cnf(refute_0_24,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | ~ r2_hidden(skolemFOFtoCNF_B_1,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) ),
    inference(canonicalize,[],[normalize_0_11]) ).

cnf(refute_0_25,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(X_3581,skolemFOFtoCNF_C))
    | r2_hidden(skolemFOFtoCNF_B_1,X_3581)
    | r2_hidden(skolemFOFtoCNF_B_1,k4_xboole_0(skolemFOFtoCNF_C,X_3581)) ),
    inference(subst,[],[refute_0_20:[bind(B,$fot(skolemFOFtoCNF_C)),bind(X_591,$fot(X_3581)),bind(X_593,$fot(skolemFOFtoCNF_B_1))]]) ).

cnf(refute_0_26,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_C)
    | r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(A,skolemFOFtoCNF_C)) ),
    inference(subst,[],[refute_0_3:[bind(B,$fot(skolemFOFtoCNF_C)),bind(D,$fot(skolemFOFtoCNF_B_1))]]) ).

cnf(refute_0_27,plain,
    r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)),
    inference(canonicalize,[],[normalize_0_12]) ).

cnf(refute_0_28,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_C)
    | r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) ),
    inference(subst,[],[refute_0_8:[bind(A,$fot(skolemFOFtoCNF_C)),bind(B,$fot(skolemFOFtoCNF_D_1)),bind(D,$fot(skolemFOFtoCNF_B_1))]]) ).

cnf(refute_0_29,plain,
    ( r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_C)
    | r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) )],[refute_0_27,refute_0_28]) ).

cnf(refute_0_30,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | ~ r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) ),
    inference(canonicalize,[],[normalize_0_13]) ).

cnf(refute_0_31,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1)
    | r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) )],[refute_0_23,refute_0_30]) ).

cnf(refute_0_32,plain,
    ~ r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1) )],[refute_0_31,refute_0_11]) ).

cnf(refute_0_33,plain,
    r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_C),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) )],[refute_0_29,refute_0_32]) ).

cnf(refute_0_34,plain,
    r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(A,skolemFOFtoCNF_C)),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_C) )],[refute_0_33,refute_0_26]) ).

cnf(refute_0_35,plain,
    r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(X_3581,skolemFOFtoCNF_C)),
    inference(subst,[],[refute_0_34:[bind(A,$fot(X_3581))]]) ).

cnf(refute_0_36,plain,
    ( r2_hidden(skolemFOFtoCNF_B_1,X_3581)
    | r2_hidden(skolemFOFtoCNF_B_1,k4_xboole_0(skolemFOFtoCNF_C,X_3581)) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_1,k2_xboole_0(X_3581,skolemFOFtoCNF_C)) )],[refute_0_35,refute_0_25]) ).

cnf(refute_0_37,plain,
    ( r2_hidden(skolemFOFtoCNF_B_1,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) ),
    inference(subst,[],[refute_0_36:[bind(X_3581,$fot(skolemFOFtoCNF_D_1))]]) ).

cnf(refute_0_38,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1))
    | r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_1,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) )],[refute_0_37,refute_0_24]) ).

cnf(refute_0_39,plain,
    ~ r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_1,skolemFOFtoCNF_D_1) )],[refute_0_38,refute_0_32]) ).

cnf(refute_0_40,plain,
    r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,k4_xboole_0(skolemFOFtoCNF_C,skolemFOFtoCNF_D_1)) )],[refute_0_23,refute_0_39]) ).

cnf(refute_0_41,plain,
    $false,
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_A_2,skolemFOFtoCNF_D_1) )],[refute_0_40,refute_0_11]) ).

fof(negate_1_0,plain,
    ~ ! [A,B,C,D] :
        ( ( r2_hidden(A,k2_xboole_0(C,D))
          & r2_hidden(B,k2_xboole_0(C,D))
          & ~ ( r2_hidden(A,k4_xboole_0(C,D))
              & r2_hidden(B,k4_xboole_0(C,D)) )
          & ~ ( r2_hidden(A,D)
              & r2_hidden(B,D) )
          & ~ ( r2_hidden(A,k4_xboole_0(C,D))
              & r2_hidden(B,D) )
          & r2_hidden(A,D) )
       => r2_hidden(B,k4_xboole_0(C,D)) ),
    inference(negate,[],[subgoal_1]) ).

fof(normalize_1_0,plain,
    ? [A,B,C,D] :
      ( ~ r2_hidden(B,k4_xboole_0(C,D))
      & r2_hidden(A,D)
      & r2_hidden(A,k2_xboole_0(C,D))
      & r2_hidden(B,k2_xboole_0(C,D))
      & ( ~ r2_hidden(A,D)
        | ~ r2_hidden(B,D) )
      & ( ~ r2_hidden(A,k4_xboole_0(C,D))
        | ~ r2_hidden(B,D) )
      & ( ~ r2_hidden(A,k4_xboole_0(C,D))
        | ~ r2_hidden(B,k4_xboole_0(C,D)) ) ),
    inference(canonicalize,[],[negate_1_0]) ).

fof(normalize_1_1,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2))
    & r2_hidden(skolemFOFtoCNF_A_3,k2_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2))
    & r2_hidden(skolemFOFtoCNF_A_3,skolemFOFtoCNF_D_2)
    & r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2))
    & ( ~ r2_hidden(skolemFOFtoCNF_A_3,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2))
      | ~ r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2)) )
    & ( ~ r2_hidden(skolemFOFtoCNF_A_3,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2))
      | ~ r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) )
    & ( ~ r2_hidden(skolemFOFtoCNF_A_3,skolemFOFtoCNF_D_2)
      | ~ r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) ) ),
    inference(skolemize,[],[normalize_1_0]) ).

fof(normalize_1_2,plain,
    ~ r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2)),
    inference(conjunct,[],[normalize_1_1]) ).

fof(normalize_1_3,plain,
    ! [A,B,C] :
      ( C != k2_xboole_0(A,B)
    <=> ? [D] :
          ( ~ r2_hidden(D,C)
        <=> ( r2_hidden(D,A)
            | r2_hidden(D,B) ) ) ),
    inference(canonicalize,[],[d2_xboole_0]) ).

fof(normalize_1_4,plain,
    ! [A,B,C] :
      ( C != k2_xboole_0(A,B)
    <=> ? [D] :
          ( ~ r2_hidden(D,C)
        <=> ( r2_hidden(D,A)
            | r2_hidden(D,B) ) ) ),
    inference(specialize,[],[normalize_1_3]) ).

fof(normalize_1_5,plain,
    ! [A,B,C,D] :
      ( ( C != k2_xboole_0(A,B)
        | ~ r2_hidden(D,A)
        | r2_hidden(D,C) )
      & ( C != k2_xboole_0(A,B)
        | ~ r2_hidden(D,B)
        | r2_hidden(D,C) )
      & ( ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),A)
        | ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),C)
        | C = k2_xboole_0(A,B) )
      & ( ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),B)
        | ~ r2_hidden(skolemFOFtoCNF_D(A,B,C),C)
        | C = k2_xboole_0(A,B) )
      & ( C != k2_xboole_0(A,B)
        | ~ r2_hidden(D,C)
        | r2_hidden(D,A)
        | r2_hidden(D,B) )
      & ( C = k2_xboole_0(A,B)
        | r2_hidden(skolemFOFtoCNF_D(A,B,C),A)
        | r2_hidden(skolemFOFtoCNF_D(A,B,C),B)
        | r2_hidden(skolemFOFtoCNF_D(A,B,C),C) ) ),
    inference(clausify,[],[normalize_1_4]) ).

fof(normalize_1_6,plain,
    ! [A,B,C,D] :
      ( C != k2_xboole_0(A,B)
      | ~ r2_hidden(D,B)
      | r2_hidden(D,C) ),
    inference(conjunct,[],[normalize_1_5]) ).

fof(normalize_1_7,plain,
    r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2)),
    inference(conjunct,[],[normalize_1_1]) ).

fof(normalize_1_8,plain,
    ! [A,B,C,D] :
      ( C != k2_xboole_0(A,B)
      | ~ r2_hidden(D,C)
      | r2_hidden(D,A)
      | r2_hidden(D,B) ),
    inference(conjunct,[],[normalize_1_5]) ).

fof(normalize_1_9,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_A_3,skolemFOFtoCNF_D_2)
    | ~ r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) ),
    inference(conjunct,[],[normalize_1_1]) ).

fof(normalize_1_10,plain,
    r2_hidden(skolemFOFtoCNF_A_3,skolemFOFtoCNF_D_2),
    inference(conjunct,[],[normalize_1_1]) ).

fof(normalize_1_11,plain,
    ~ r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2),
    inference(simplify,[],[normalize_1_9,normalize_1_10]) ).

fof(normalize_1_12,plain,
    ! [A,B] : k2_xboole_0(A,k4_xboole_0(B,A)) = k2_xboole_0(A,B),
    inference(canonicalize,[],[t39_xboole_1]) ).

fof(normalize_1_13,plain,
    ! [A,B] : k2_xboole_0(A,k4_xboole_0(B,A)) = k2_xboole_0(A,B),
    inference(specialize,[],[normalize_1_12]) ).

cnf(refute_1_0,plain,
    ~ r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2)),
    inference(canonicalize,[],[normalize_1_2]) ).

cnf(refute_1_1,plain,
    ( C != k2_xboole_0(A,B)
    | ~ r2_hidden(D,B)
    | r2_hidden(D,C) ),
    inference(canonicalize,[],[normalize_1_6]) ).

cnf(refute_1_2,plain,
    ( k2_xboole_0(A,B) != k2_xboole_0(A,B)
    | ~ r2_hidden(D,B)
    | r2_hidden(D,k2_xboole_0(A,B)) ),
    inference(subst,[],[refute_1_1:[bind(C,$fot(k2_xboole_0(A,B)))]]) ).

cnf(refute_1_3,plain,
    k2_xboole_0(A,B) = k2_xboole_0(A,B),
    introduced(tautology,[refl,[$fot(k2_xboole_0(A,B))]]) ).

cnf(refute_1_4,plain,
    ( ~ r2_hidden(D,B)
    | r2_hidden(D,k2_xboole_0(A,B)) ),
    inference(resolve,[$cnf( $equal(k2_xboole_0(A,B),k2_xboole_0(A,B)) )],[refute_1_3,refute_1_2]) ).

cnf(refute_1_5,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_C_1)
    | r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(A,skolemFOFtoCNF_C_1)) ),
    inference(subst,[],[refute_1_4:[bind(B,$fot(skolemFOFtoCNF_C_1)),bind(D,$fot(skolemFOFtoCNF_B_2))]]) ).

cnf(refute_1_6,plain,
    r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2)),
    inference(canonicalize,[],[normalize_1_7]) ).

cnf(refute_1_7,plain,
    ( C != k2_xboole_0(A,B)
    | ~ r2_hidden(D,C)
    | r2_hidden(D,A)
    | r2_hidden(D,B) ),
    inference(canonicalize,[],[normalize_1_8]) ).

cnf(refute_1_8,plain,
    ( k2_xboole_0(A,B) != k2_xboole_0(A,B)
    | ~ r2_hidden(D,k2_xboole_0(A,B))
    | r2_hidden(D,A)
    | r2_hidden(D,B) ),
    inference(subst,[],[refute_1_7:[bind(C,$fot(k2_xboole_0(A,B)))]]) ).

cnf(refute_1_9,plain,
    ( ~ r2_hidden(D,k2_xboole_0(A,B))
    | r2_hidden(D,A)
    | r2_hidden(D,B) ),
    inference(resolve,[$cnf( $equal(k2_xboole_0(A,B),k2_xboole_0(A,B)) )],[refute_1_3,refute_1_8]) ).

cnf(refute_1_10,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2))
    | r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_C_1)
    | r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) ),
    inference(subst,[],[refute_1_9:[bind(A,$fot(skolemFOFtoCNF_C_1)),bind(B,$fot(skolemFOFtoCNF_D_2)),bind(D,$fot(skolemFOFtoCNF_B_2))]]) ).

cnf(refute_1_11,plain,
    ( r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_C_1)
    | r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2)) )],[refute_1_6,refute_1_10]) ).

cnf(refute_1_12,plain,
    ~ r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2),
    inference(canonicalize,[],[normalize_1_11]) ).

cnf(refute_1_13,plain,
    r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_C_1),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) )],[refute_1_11,refute_1_12]) ).

cnf(refute_1_14,plain,
    r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(A,skolemFOFtoCNF_C_1)),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_C_1) )],[refute_1_13,refute_1_5]) ).

cnf(refute_1_15,plain,
    r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(X_5715,skolemFOFtoCNF_C_1)),
    inference(subst,[],[refute_1_14:[bind(A,$fot(X_5715))]]) ).

cnf(refute_1_16,plain,
    ( ~ r2_hidden(X_4456,k2_xboole_0(X_4454,k4_xboole_0(B,X_4454)))
    | r2_hidden(X_4456,X_4454)
    | r2_hidden(X_4456,k4_xboole_0(B,X_4454)) ),
    inference(subst,[],[refute_1_9:[bind(A,$fot(X_4454)),bind(B,$fot(k4_xboole_0(B,X_4454))),bind(D,$fot(X_4456))]]) ).

cnf(refute_1_17,plain,
    k2_xboole_0(A,k4_xboole_0(B,A)) = k2_xboole_0(A,B),
    inference(canonicalize,[],[normalize_1_13]) ).

cnf(refute_1_18,plain,
    k2_xboole_0(X_4454,k4_xboole_0(B,X_4454)) = k2_xboole_0(X_4454,B),
    inference(subst,[],[refute_1_17:[bind(A,$fot(X_4454))]]) ).

cnf(refute_1_19,plain,
    ( k2_xboole_0(X_4454,k4_xboole_0(B,X_4454)) != k2_xboole_0(X_4454,B)
    | ~ r2_hidden(X_4456,k2_xboole_0(X_4454,B))
    | r2_hidden(X_4456,k2_xboole_0(X_4454,k4_xboole_0(B,X_4454))) ),
    introduced(tautology,[equality,[$cnf( ~ r2_hidden(X_4456,k2_xboole_0(X_4454,k4_xboole_0(B,X_4454))) ),[1],$fot(k2_xboole_0(X_4454,B))]]) ).

cnf(refute_1_20,plain,
    ( ~ r2_hidden(X_4456,k2_xboole_0(X_4454,B))
    | r2_hidden(X_4456,k2_xboole_0(X_4454,k4_xboole_0(B,X_4454))) ),
    inference(resolve,[$cnf( $equal(k2_xboole_0(X_4454,k4_xboole_0(B,X_4454)),k2_xboole_0(X_4454,B)) )],[refute_1_18,refute_1_19]) ).

cnf(refute_1_21,plain,
    ( ~ r2_hidden(X_4456,k2_xboole_0(X_4454,B))
    | r2_hidden(X_4456,X_4454)
    | r2_hidden(X_4456,k4_xboole_0(B,X_4454)) ),
    inference(resolve,[$cnf( r2_hidden(X_4456,k2_xboole_0(X_4454,k4_xboole_0(B,X_4454))) )],[refute_1_20,refute_1_16]) ).

cnf(refute_1_22,plain,
    ( ~ r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(X_5715,skolemFOFtoCNF_C_1))
    | r2_hidden(skolemFOFtoCNF_B_2,X_5715)
    | r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,X_5715)) ),
    inference(subst,[],[refute_1_21:[bind(B,$fot(skolemFOFtoCNF_C_1)),bind(X_4454,$fot(X_5715)),bind(X_4456,$fot(skolemFOFtoCNF_B_2))]]) ).

cnf(refute_1_23,plain,
    ( r2_hidden(skolemFOFtoCNF_B_2,X_5715)
    | r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,X_5715)) ),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_2,k2_xboole_0(X_5715,skolemFOFtoCNF_C_1)) )],[refute_1_15,refute_1_22]) ).

cnf(refute_1_24,plain,
    ( r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2))
    | r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) ),
    inference(subst,[],[refute_1_23:[bind(X_5715,$fot(skolemFOFtoCNF_D_2))]]) ).

cnf(refute_1_25,plain,
    r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2),
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_2,k4_xboole_0(skolemFOFtoCNF_C_1,skolemFOFtoCNF_D_2)) )],[refute_1_24,refute_1_0]) ).

cnf(refute_1_26,plain,
    $false,
    inference(resolve,[$cnf( r2_hidden(skolemFOFtoCNF_B_2,skolemFOFtoCNF_D_2) )],[refute_1_25,refute_1_12]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SEU406+1 : TPTP v8.1.0. Released v3.4.0.
% 0.07/0.12  % Command  : metis --show proof --show saturation %s
% 0.12/0.33  % Computer : n017.cluster.edu
% 0.12/0.33  % Model    : x86_64 x86_64
% 0.12/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.33  % Memory   : 8042.1875MB
% 0.12/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.33  % CPULimit : 300
% 0.12/0.33  % WCLimit  : 600
% 0.12/0.33  % DateTime : Sun Jun 19 16:08:13 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 0.12/0.34  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 199.34/199.51  % SZS status Theorem for /export/starexec/sandbox/benchmark/theBenchmark.p
% 199.34/199.51  
% 199.34/199.51  % SZS output start CNFRefutation for /export/starexec/sandbox/benchmark/theBenchmark.p
% See solution above
% 199.34/199.52  
%------------------------------------------------------------------------------