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iProver---3.9.4.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : iProver---3.9.4
% Problem  : SET752+4 : TPTP v9.3.1. Bugfixed v2.2.1.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM

% Computer : n003.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 : Fri Sep 25 02:48:11 PM UTC 2026

% Result   : Theorem 42.60s 7.85s
% Output   : CNFRefutation 42.60s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   14
%            Number of leaves      :    5
% Syntax   : Number of formulae    :   75 (   6 unt;   0 def)
%            Number of atoms       :  220 (   2 equ)
%            Maximal formula atoms :    6 (   2 avg)
%            Number of connectives :  246 ( 101   ~; 104   |;  32   &)
%                                         (   5 <=>;   4  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   6 avg)
%            Maximal term depth    :    5 (   1 avg)
%            Number of types       :    1 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of predicates  :    7 (   5 usr;   1 prp; 0-3 aty)
%            Number of functors    :    9 (   9 usr;   5 con; 0-3 aty)
%            Number of variables   :  191 (   0 sgn 176   !;  15   ?;  91   :)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ! [X0,X1] :
      ( subset(X0,X1)
    <=> ! [X2] :
          ( member(X2,X0)
         => member(X2,X1) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SET006+0.ax',subset) ).

fof(f2,axiom,
    ! [X0,X1] :
      ( equal_set(X0,X1)
    <=> ( subset(X1,X0)
        & subset(X0,X1) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SET006+0.ax',equal_set) ).

fof(f5,axiom,
    ! [X0,X1,X2] :
      ( member(X0,union(X1,X2))
    <=> ( member(X0,X2)
        | member(X0,X1) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SET006+0.ax',union) ).

fof(f22,axiom,
    ! [X0,X1,X2] :
      ( member(X2,image2(X0,X1))
    <=> ? [X3] :
          ( apply(X0,X3,X2)
          & member(X3,X1) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/SET006+1.ax',image2) ).

fof(f29,conjecture,
    ! [X0,X1,X2,X3,X4] :
      ( ( subset(X4,X1)
        & subset(X3,X1)
        & maps(X0,X1,X2) )
     => equal_set(image2(X0,union(X3,X4)),union(image2(X0,X3),image2(X0,X4))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',thIIa02) ).

fof(f30,negated_conjecture,
    ~ ! [X0,X1,X2,X3,X4] :
        ( ( subset(X4,X1)
          & subset(X3,X1)
          & maps(X0,X1,X2) )
       => equal_set(image2(X0,union(X3,X4)),union(image2(X0,X3),image2(X0,X4))) ),
    inference(negated_conjecture,[status(cth)],[f29]) ).

fof(f33,plain,
    ! [X0,X1] :
      ( ( subset(X1,X0)
        & subset(X0,X1) )
     => equal_set(X0,X1) ),
    inference(unused_predicate_definition_removal,[],[f2]) ).

fof(f34,plain,
    ? [X0,X1,X2,X3,X4] :
      ( subset(X4,X1)
      & subset(X3,X1)
      & maps(X0,X1,X2)
      & ~ equal_set(image2(X0,union(X3,X4)),union(image2(X0,X3),image2(X0,X4))) ),
    inference(ennf_transformation,[],[f30]) ).

fof(f35,plain,
    ? [X0,X1,X2,X3,X4] :
      ( subset(X4,X1)
      & subset(X3,X1)
      & maps(X0,X1,X2)
      & ~ equal_set(image2(X0,union(X3,X4)),union(image2(X0,X3),image2(X0,X4))) ),
    inference(flattening,[],[f34]) ).

fof(f36,plain,
    ! [X0,X1] :
      ( subset(X0,X1)
    <=> ! [X2] :
          ( ~ member(X2,X0)
          | member(X2,X1) ) ),
    inference(ennf_transformation,[],[f1]) ).

fof(f37,plain,
    ! [X0,X1] :
      ( ~ subset(X1,X0)
      | ~ subset(X0,X1)
      | equal_set(X0,X1) ),
    inference(ennf_transformation,[],[f33]) ).

fof(f38,plain,
    ! [X0,X1] :
      ( ~ subset(X1,X0)
      | ~ subset(X0,X1)
      | equal_set(X0,X1) ),
    inference(flattening,[],[f37]) ).

fof(f41,plain,
    ( subset(sK4,sK1)
    & subset(sK3,sK1)
    & maps(sK0,sK1,sK2)
    & ~ equal_set(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1,sK2,sK3,sK4]),skolemize(X0,sK0),skolemize(X1,sK1),skolemize(X2,sK2),skolemize(X3,sK3),skolemize(X4,sK4)],[f35]) ).

fof(f42,plain,
    ! [X0,X1] :
      ( ( ~ subset(X0,X1)
        | ! [X2] :
            ( ~ member(X2,X0)
            | member(X2,X1) ) )
      & ( ? [X2] :
            ( member(X2,X0)
            & ~ member(X2,X1) )
        | subset(X0,X1) ) ),
    inference(nnf_transformation,[],[f36]) ).

fof(f43,plain,
    ! [X0,X1] :
      ( ( ~ subset(X0,X1)
        | ! [X3] :
            ( ~ member(X3,X0)
            | member(X3,X1) ) )
      & ( ? [X2] :
            ( member(X2,X0)
            & ~ member(X2,X1) )
        | subset(X0,X1) ) ),
    inference(rectify,[],[f42]) ).

fof(f44,plain,
    ! [X0,X1] :
      ( ( ~ subset(X0,X1)
        | ! [X3] :
            ( ~ member(X3,X0)
            | member(X3,X1) ) )
      & ( ( member(sK5(X0,X1),X0)
          & ~ member(sK5(X0,X1),X1) )
        | subset(X0,X1) ) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK5]),skolemize(X2,sK5(X0,X1))],[f43]) ).

fof(f45,plain,
    ! [X0,X1,X2] :
      ( ( ~ member(X0,union(X1,X2))
        | member(X0,X2)
        | member(X0,X1) )
      & ( ( ~ member(X0,X2)
          & ~ member(X0,X1) )
        | member(X0,union(X1,X2)) ) ),
    inference(nnf_transformation,[],[f5]) ).

fof(f46,plain,
    ! [X0,X1,X2] :
      ( ( ~ member(X0,union(X1,X2))
        | member(X0,X2)
        | member(X0,X1) )
      & ( ( ~ member(X0,X2)
          & ~ member(X0,X1) )
        | member(X0,union(X1,X2)) ) ),
    inference(flattening,[],[f45]) ).

fof(f48,plain,
    ! [X0,X1,X2] :
      ( ( ~ member(X2,image2(X0,X1))
        | ? [X3] :
            ( apply(X0,X3,X2)
            & member(X3,X1) ) )
      & ( ! [X3] :
            ( ~ apply(X0,X3,X2)
            | ~ member(X3,X1) )
        | member(X2,image2(X0,X1)) ) ),
    inference(nnf_transformation,[],[f22]) ).

fof(f49,plain,
    ! [X0,X1,X2] :
      ( ( ~ member(X2,image2(X0,X1))
        | ? [X4] :
            ( apply(X0,X4,X2)
            & member(X4,X1) ) )
      & ( ! [X3] :
            ( ~ apply(X0,X3,X2)
            | ~ member(X3,X1) )
        | member(X2,image2(X0,X1)) ) ),
    inference(rectify,[],[f48]) ).

fof(f50,plain,
    ! [X0,X1,X2] :
      ( ( ~ member(X2,image2(X0,X1))
        | ( apply(X0,sK7(X0,X1,X2),X2)
          & member(sK7(X0,X1,X2),X1) ) )
      & ( ! [X3] :
            ( ~ apply(X0,X3,X2)
            | ~ member(X3,X1) )
        | member(X2,image2(X0,X1)) ) ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK7]),skolemize(X4,sK7(X0,X1,X2))],[f49]) ).

fof(f54,plain,
    ~ equal_set(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),
    inference(cnf_transformation,[],[f41]) ).

fof(f55,plain,
    ! [X3,X0,X1] :
      ( ~ subset(X0,X1)
      | ~ member(X3,X0)
      | member(X3,X1) ),
    inference(cnf_transformation,[],[f44]) ).

fof(f56,plain,
    ! [X0,X1] :
      ( member(sK5(X0,X1),X0)
      | subset(X0,X1) ),
    inference(cnf_transformation,[],[f44]) ).

fof(f57,plain,
    ! [X0,X1] :
      ( ~ member(sK5(X0,X1),X1)
      | subset(X0,X1) ),
    inference(cnf_transformation,[],[f44]) ).

fof(f58,plain,
    ! [X2,X0,X1] :
      ( ~ member(X0,union(X1,X2))
      | member(X0,X2)
      | member(X0,X1) ),
    inference(cnf_transformation,[],[f46]) ).

fof(f59,plain,
    ! [X2,X0,X1] :
      ( ~ member(X0,X2)
      | member(X0,union(X1,X2)) ),
    inference(cnf_transformation,[],[f46]) ).

fof(f60,plain,
    ! [X2,X0,X1] :
      ( ~ member(X0,X1)
      | member(X0,union(X1,X2)) ),
    inference(cnf_transformation,[],[f46]) ).

fof(f61,plain,
    ! [X0,X1] :
      ( ~ subset(X1,X0)
      | ~ subset(X0,X1)
      | equal_set(X0,X1) ),
    inference(cnf_transformation,[],[f38]) ).

fof(f65,plain,
    ! [X2,X0,X1] :
      ( ~ member(X2,image2(X0,X1))
      | apply(X0,sK7(X0,X1,X2),X2) ),
    inference(cnf_transformation,[],[f50]) ).

fof(f66,plain,
    ! [X2,X0,X1] :
      ( ~ member(X2,image2(X0,X1))
      | member(sK7(X0,X1,X2),X1) ),
    inference(cnf_transformation,[],[f50]) ).

fof(f67,plain,
    ! [X2,X3,X0,X1] :
      ( ~ apply(X0,X3,X2)
      | ~ member(X3,X1)
      | member(X2,image2(X0,X1)) ),
    inference(cnf_transformation,[],[f50]) ).

tcf(c_49,negated_conjecture,
    ~ equal_set(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),
    inference(cnf_transformation,[],[f54]) ).

tcf(c_53,plain,
    ! [X0: $i,X1: $i] :
      ( subset(X0,X1)
      | ~ member(sK5(X0,X1),X1) ),
    inference(cnf_transformation,[],[f57]) ).

tcf(c_54,plain,
    ! [X0: $i,X1: $i] :
      ( subset(X0,X1)
      | member(sK5(X0,X1),X0) ),
    inference(cnf_transformation,[],[f56]) ).

tcf(c_55,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( member(X2,X1)
      | ~ member(X2,X0)
      | ~ subset(X0,X1) ),
    inference(cnf_transformation,[],[f55]) ).

tcf(c_56,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( member(X0,union(X1,X2))
      | ~ member(X0,X1) ),
    inference(cnf_transformation,[],[f60]) ).

tcf(c_57,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( member(X0,union(X2,X1))
      | ~ member(X0,X1) ),
    inference(cnf_transformation,[],[f59]) ).

tcf(c_58,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( member(X0,X2)
      | member(X0,X1)
      | ~ member(X0,union(X1,X2)) ),
    inference(cnf_transformation,[],[f58]) ).

tcf(c_59,plain,
    ! [X0: $i,X1: $i] :
      ( equal_set(X0,X1)
      | ~ subset(X1,X0)
      | ~ subset(X0,X1) ),
    inference(cnf_transformation,[],[f61]) ).

tcf(c_63,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( member(X2,image2(X0,X3))
      | ~ member(X1,X3)
      | ~ apply(X0,X1,X2) ),
    inference(cnf_transformation,[],[f67]) ).

tcf(c_64,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( member(sK7(X1,X2,X0),X2)
      | ~ member(X0,image2(X1,X2)) ),
    inference(cnf_transformation,[],[f66]) ).

tcf(c_65,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( apply(X1,sK7(X1,X2,X0),X0)
      | ~ member(X0,image2(X1,X2)) ),
    inference(cnf_transformation,[],[f65]) ).

tcf(c_241,plain,
    ! [X0: $i,X1: $i] :
      ( ~ subset(X1,X0)
      | ~ subset(X0,X1)
      | ( image2(sK0,union(sK3,sK4)) != X1 )
      | ( union(image2(sK0,sK3),image2(sK0,sK4)) != X0 ) ),
    inference(resolution_lifted,[status(thm)],[c_49,c_59]) ).

tcf(c_242,plain,
    ( ~ subset(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))
    | ~ subset(union(image2(sK0,sK3),image2(sK0,sK4)),image2(sK0,union(sK3,sK4))) ),
    inference(unflattening,[status(thm)],[c_241]) ).

tcf(c_798,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( subset(union(X0,X1),X2)
      | member(sK5(union(X0,X1),X2),X1)
      | member(sK5(union(X0,X1),X2),X0) ),
    inference(superposition,[status(thm)],[c_54,c_58]) ).

tcf(c_984,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( member(X2,image2(X0,X3))
      | ~ member(X2,image2(X0,X1))
      | ~ member(sK7(X0,X1,X2),X3) ),
    inference(superposition,[status(thm)],[c_65,c_63]) ).

tcf(c_995,plain,
    ( subset(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))
    | member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),image2(sK0,union(sK3,sK4))) ),
    inference(instantiation,[status(thm)],[c_54]) ).

tcf(c_996,plain,
    ( subset(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))
    | ~ member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),union(image2(sK0,sK3),image2(sK0,sK4))) ),
    inference(instantiation,[status(thm)],[c_53]) ).

tcf(c_1034,plain,
    ( apply(sK0,sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))))
    | ~ member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),image2(sK0,union(sK3,sK4))) ),
    inference(instantiation,[status(thm)],[c_65]) ).

tcf(c_1035,plain,
    ( member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),union(sK3,sK4))
    | ~ member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),image2(sK0,union(sK3,sK4))) ),
    inference(instantiation,[status(thm)],[c_64]) ).

tcf(c_1351,plain,
    ( member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK4)
    | member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK3)
    | ~ member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),union(sK3,sK4)) ),
    inference(instantiation,[status(thm)],[c_58]) ).

tcf(c_1905,plain,
    ! [X0: $i,X1: $i] :
      ( member(X1,image2(X0,sK3))
      | ~ member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK3)
      | ~ apply(X0,sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),X1) ),
    inference(instantiation,[status(thm)],[c_63]) ).

tcf(c_3366,plain,
    ! [X0: $i,X1: $i] :
      ( member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),union(X1,X0))
      | ~ member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),X0) ),
    inference(instantiation,[status(thm)],[c_57]) ).

tcf(c_3367,plain,
    ! [X0: $i,X1: $i] :
      ( member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),union(X0,X1))
      | ~ member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),X0) ),
    inference(instantiation,[status(thm)],[c_56]) ).

tcf(c_4475,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i,X4: $i] :
      ( member(X2,image2(X0,union(X3,X4)))
      | ~ member(X2,image2(X0,X1))
      | ~ member(sK7(X0,X1,X2),X3) ),
    inference(superposition,[status(thm)],[c_56,c_984]) ).

tcf(c_4476,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i,X4: $i] :
      ( member(X2,image2(X0,union(X4,X3)))
      | ~ member(X2,image2(X0,X1))
      | ~ member(sK7(X0,X1,X2),X3) ),
    inference(superposition,[status(thm)],[c_57,c_984]) ).

tcf(c_5516,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( subset(union(X2,X0),X3)
      | member(sK5(union(X2,X0),X3),X2)
      | member(sK5(union(X2,X0),X3),X1)
      | ~ subset(X0,X1) ),
    inference(superposition,[status(thm)],[c_798,c_55]) ).

tcf(c_11916,plain,
    ( member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),union(image2(sK0,sK3),image2(sK0,sK4)))
    | ~ member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),image2(sK0,sK4)) ),
    inference(instantiation,[status(thm)],[c_3366]) ).

tcf(c_11924,plain,
    ( member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),union(image2(sK0,sK3),image2(sK0,sK4)))
    | ~ member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),image2(sK0,sK3)) ),
    inference(instantiation,[status(thm)],[c_3367]) ).

tcf(c_13759,plain,
    ( member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),image2(sK0,sK3))
    | ~ member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK3)
    | ~ apply(sK0,sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))) ),
    inference(instantiation,[status(thm)],[c_1905]) ).

tcf(c_24513,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( member(X0,image2(X1,union(X2,X3)))
      | ~ member(X0,image2(X1,X2)) ),
    inference(superposition,[status(thm)],[c_64,c_4475]) ).

tcf(c_24708,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( subset(X0,image2(X1,union(X2,X3)))
      | ~ member(sK5(X0,image2(X1,union(X2,X3))),image2(X1,X2)) ),
    inference(superposition,[status(thm)],[c_24513,c_53]) ).

tcf(c_24950,plain,
    ! [X0: $i,X1: $i,X2: $i] : subset(image2(X0,X1),image2(X0,union(X1,X2))),
    inference(superposition,[status(thm)],[c_54,c_24708]) ).

tcf(c_26359,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( member(X0,image2(X1,union(X3,X2)))
      | ~ member(X0,image2(X1,X2)) ),
    inference(superposition,[status(thm)],[c_64,c_4476]) ).

tcf(c_26625,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( subset(X0,image2(X1,union(X2,X3)))
      | ~ member(sK5(X0,image2(X1,union(X2,X3))),image2(X1,X3)) ),
    inference(superposition,[status(thm)],[c_26359,c_53]) ).

tcf(c_26918,plain,
    ! [X0: $i,X1: $i,X2: $i] : subset(image2(X0,X1),image2(X0,union(X2,X1))),
    inference(superposition,[status(thm)],[c_54,c_26625]) ).

tcf(c_84332,plain,
    ! [X0: $i,X1: $i] :
      ( member(X1,image2(X0,sK4))
      | ~ member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK4)
      | ~ apply(X0,sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),X1) ),
    inference(instantiation,[status(thm)],[c_63]) ).

tcf(c_84716,plain,
    ( member(sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),image2(sK0,sK4))
    | ~ member(sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK4)
    | ~ apply(sK0,sK7(sK0,union(sK3,sK4),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))),sK5(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4)))) ),
    inference(instantiation,[status(thm)],[c_84332]) ).

tcf(c_122192,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( subset(union(X2,X0),X1)
      | member(sK5(union(X2,X0),X1),X2)
      | ~ subset(X0,X1) ),
    inference(superposition,[status(thm)],[c_5516,c_53]) ).

tcf(c_122720,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( subset(union(X2,X0),X1)
      | member(sK5(union(X2,X0),X1),X3)
      | ~ subset(X2,X3)
      | ~ subset(X0,X1) ),
    inference(superposition,[status(thm)],[c_122192,c_55]) ).

tcf(c_123027,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( subset(union(X2,X0),X1)
      | ~ subset(X2,X1)
      | ~ subset(X0,X1) ),
    inference(superposition,[status(thm)],[c_122720,c_53]) ).

tcf(c_123631,plain,
    ( ~ subset(image2(sK0,sK4),image2(sK0,union(sK3,sK4)))
    | ~ subset(image2(sK0,sK3),image2(sK0,union(sK3,sK4)))
    | ~ subset(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))) ),
    inference(superposition,[status(thm)],[c_123027,c_242]) ).

tcf(c_123876,plain,
    ~ subset(image2(sK0,union(sK3,sK4)),union(image2(sK0,sK3),image2(sK0,sK4))),
    inference(forward_subsumption_resolution,[status(thm)],[c_123631,c_26918,c_24950]) ).

tcf(c_123878,plain,
    $false,
    inference(prop_impl_just,[status(thm)],[c_123876,c_84716,c_13759,c_11924,c_11916,c_1351,c_1034,c_1035,c_995,c_996]) ).


%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03  % Problem  : SET752+4 : TPTP v9.3.1. Bugfixed v2.2.1.
% 0.00/0.04  % Command  : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.11/0.37  % Computer : n003.cluster.edu
% 0.11/0.37  % Model    : x86_64 x86_64
% 0.11/0.37  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.37  % Memory   : 8046.5625MB
% 0.11/0.37  % OS       : Linux 6.8.0-71-generic
% 0.11/0.37  % CPULimit : 300
% 0.11/0.37  % WCLimit  : 300
% 0.11/0.37  % DateTime : Thu Sep 24 11:53:38 UTC 2026
% 0.15/0.38  % CPUTime  : 
% 0.15/0.38  Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.15/0.41  Running first-order theorem proving
% 0.15/0.42  Running: /export/starexec/sandbox2/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.15/0.43  
% 0.15/0.43  % ======== iProver multi-core TPTP/SMT =========
% 0.15/0.43  
% 0.15/0.43  % Detected problem language: tptp
% 0.15/0.44  % Proving...
% 42.60/7.85  % SZS status Started for theBenchmark.p
% 42.60/7.85  % SZS status Theorem for theBenchmark.p
% 42.60/7.85  
% 42.60/7.85  %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 42.60/7.85  
% 42.60/7.85  % ------  iProver source info
% 42.60/7.85  
% 42.60/7.85  % git: date: 2026-07-19 20:42:38 +0200
% 42.60/7.85  % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 42.60/7.85  % git: non_committed_changes: false
% 42.60/7.85  
% 42.60/7.85  % ------ Parsing...
% 42.60/7.85  % ------ Clausification by vclausify_rel  & Parsing by iProver...% 
% 42.60/7.85  
% 42.60/7.85  % ------ Preprocessing... sup_sim: 0  sf_s  rm: 1 0s  sf_e  pe_s  pe:1:0s pe:2:0s pe_e  sup_sim: 0  sf_s  rm: 3 0s  sf_e  pe_s  pe_e % 
% 42.60/7.85  
% 42.60/7.85  % ------ Preprocessing... gs_s  sp: 0 0s  gs_e  snvd_s sp: 0 0s snvd_e % 
% 42.60/7.85  
% 42.60/7.85  % ------ Preprocessing... sf_s  rm: 1 0s  sf_e  sf_s  rm: 0 0s  sf_e 
% 42.60/7.85  % ------ Proving...
% 42.60/7.85  % ------ Problem Properties 
% 42.60/7.85  
% 42.60/7.85  % 
% 42.60/7.85  % clauses                               15
% 42.60/7.85  % conjectures                           2
% 42.60/7.85  % EPR                                   4
% 42.60/7.85  % Horn                                  13
% 42.60/7.85  % unary                                 2
% 42.60/7.85  % binary                                9
% 42.60/7.85  % lits                                  35
% 42.60/7.85  % lits eq                               1
% 42.60/7.85  % fd_pure                               0
% 42.60/7.85  % fd_pseudo                             0
% 42.60/7.85  % fd_cond                               0
% 42.60/7.85  % fd_pseudo_cond                        1
% 42.60/7.85  % AC symbols                            0
% 42.60/7.85  
% 42.60/7.85  % ------ Schedule dynamic 5 is on 
% 42.60/7.85  
% 42.60/7.85  % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 42.60/7.85  
% 42.60/7.85  
% 42.60/7.85  % ------ 
% 42.60/7.85  % Current options:
% 42.60/7.85  % ------ 
% 42.60/7.85  
% 42.60/7.85  
% 42.60/7.85  % 
% 42.60/7.85  
% 42.60/7.85  % ------ Proving...
% 42.60/7.85  % 
% 42.60/7.85  
% 42.60/7.85  % SZS status Theorem for theBenchmark.p
% 42.60/7.85  
% 42.60/7.85  % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 42.60/7.85  
% 42.60/7.85  
%------------------------------------------------------------------------------