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%------------------------------------------------------------------------------
% File     : Drodi---4.1.1
% Problem  : SYO657-1 : TPTP v9.3.1. Released v7.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p

% Computer : n026.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 03:42:54 PM UTC 2026

% Result   : Unsatisfiable 0.12s 0.37s
% Output   : CNFRefutation 0.12s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   15
%            Number of leaves      :   26
% Syntax   : Number of formulae    :  110 (  13 unt;   6 def)
%            Number of atoms       :  488 (   0 equ)
%            Maximal formula atoms :    9 (   4 avg)
%            Number of connectives :  730 ( 352   ~; 372   |;   0   &)
%                                         (   6 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   13 (   7 avg)
%            Maximal term depth    :    4 (   2 avg)
%            Number of predicates  :   10 (   9 usr;   7 prp; 0-2 aty)
%            Number of functors    :    5 (   5 usr;   2 con; 0-1 aty)
%            Number of variables   :  213 ( 213   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ! [E,A_2,B_6] :
      ( 'E'(f(B_6),f(suc(B_6)))
      | 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(suc(B_6)))
      | ~ 'E'('0',f(B_6))
      | ~ iLEQ(suc(A_2),suc(B_6))
      | ~ 'E'('0',f(A_2))
      | ~ 'E'('0',f(suc(A_2))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f2,axiom,
    ! [LE,B_2,E] :
      ( 'LE'(f(B_2),s('0'))
      | 'E'(s('0'),f(suc(suc(B_2))))
      | ~ 'LE'(f(suc(suc(B_2))),s(s('0'))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f3,axiom,
    ! [LE,A] : 'LE'(f(A),s(s('0'))),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f4,axiom,
    ! [E,A_1] :
      ( iLEQ(suc(A_1),suc(A_1))
      | 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(A_1)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f5,axiom,
    ! [A_1,B_3,E] :
      ( 'E'(f(B_3),f(suc(B_3)))
      | ~ 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(s('0'),f(B_3))
      | ~ 'E'(s('0'),f(suc(B_3)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(A_1))
      | ~ 'E'(s('0'),f(suc(suc(A_1))))
      | ~ iLEQ(suc(A_1),suc(B_3)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f6,axiom,
    ! [E,A_2,B_6] :
      ( 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(suc(B_6)))
      | ~ 'E'(f(B_6),f(suc(B_6)))
      | ~ 'E'('0',f(B_6))
      | ~ iLEQ(suc(A_2),suc(B_6))
      | ~ 'E'('0',f(A_2))
      | ~ 'E'('0',f(suc(suc(B_6))))
      | ~ 'E'('0',f(suc(A_2))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f7,axiom,
    ! [LE,B_2,E] :
      ( 'LE'(f(B_2),s('0'))
      | 'E'(s('0'),f(B_2))
      | ~ 'LE'(f(B_2),s(s('0'))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f8,axiom,
    ! [LE,B_5,E] :
      ( 'LE'(f(B_5),'0')
      | 'E'('0',f(B_5))
      | ~ 'LE'(f(B_5),s('0')) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f9,axiom,
    ! [E,A_2] :
      ( iLEQ(suc(A_2),suc(A_2))
      | ~ 'E'('0',f(A_2))
      | ~ 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(suc(A_2)))
      | ~ 'E'('0',f(suc(suc(A_2)))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f10,axiom,
    ! [E,A_2,B_6] :
      ( 'E'(f(B_6),f(suc(B_6)))
      | ~ 'E'('0',f(suc(B_6)))
      | ~ 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(B_6))
      | ~ iLEQ(suc(A_2),suc(B_6))
      | ~ 'E'('0',f(A_2))
      | ~ 'E'('0',f(suc(suc(A_2))))
      | ~ 'E'('0',f(suc(A_2))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f11,axiom,
    ! [E,A_2] :
      ( iLEQ(suc(A_2),suc(A_2))
      | 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(suc(A_2)))
      | ~ 'E'('0',f(A_2)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f12,axiom,
    ! [E,A_2,B_6] :
      ( ~ 'E'('0',f(suc(B_6)))
      | ~ 'E'(f(B_6),f(suc(B_6)))
      | ~ 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(B_6))
      | ~ iLEQ(suc(A_2),suc(B_6))
      | ~ 'E'('0',f(A_2))
      | ~ 'E'('0',f(suc(suc(A_2))))
      | ~ 'E'('0',f(suc(suc(B_6))))
      | ~ 'E'('0',f(suc(A_2))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f13,axiom,
    ! [LE,B_5,E] :
      ( 'LE'(f(B_5),'0')
      | 'E'('0',f(suc(B_5)))
      | ~ 'LE'(f(suc(B_5)),s('0')) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f14,axiom,
    ! [LE,B_5,E] :
      ( 'LE'(f(B_5),'0')
      | 'E'('0',f(suc(suc(B_5))))
      | ~ 'LE'(f(suc(suc(B_5))),s('0')) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f15,axiom,
    ! [LE] : ~ 'LE'(f(z),'0'),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f16,axiom,
    ! [LE,B_2,E] :
      ( 'LE'(f(B_2),s('0'))
      | 'E'(s('0'),f(suc(B_2)))
      | ~ 'LE'(f(suc(B_2)),s(s('0'))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f17,axiom,
    ! [A_1,B_3,E] :
      ( 'E'(f(B_3),f(suc(B_3)))
      | 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(s('0'),f(B_3))
      | ~ 'E'(s('0'),f(suc(B_3)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(A_1))
      | ~ iLEQ(suc(A_1),suc(B_3)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f18,axiom,
    ! [E,A_1] :
      ( iLEQ(suc(A_1),suc(A_1))
      | ~ 'E'(s('0'),f(A_1))
      | ~ 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(suc(A_1)))) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f19,axiom,
    ! [A_1,B_3,E] :
      ( 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(f(B_3),f(suc(B_3)))
      | ~ 'E'(s('0'),f(B_3))
      | ~ 'E'(s('0'),f(suc(B_3)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(suc(B_3))))
      | ~ 'E'(s('0'),f(A_1))
      | ~ iLEQ(suc(A_1),suc(B_3)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f20,axiom,
    ! [A_1,B_3,E] :
      ( ~ 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(f(B_3),f(suc(B_3)))
      | ~ 'E'(s('0'),f(B_3))
      | ~ 'E'(s('0'),f(suc(B_3)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(suc(B_3))))
      | ~ 'E'(s('0'),f(A_1))
      | ~ 'E'(s('0'),f(suc(suc(A_1))))
      | ~ iLEQ(suc(A_1),suc(B_3)) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f21,plain,
    ! [B_6] :
      ( 'E'(f(B_6),f(suc(B_6)))
      | ! [A_2] :
          ( 'E'(f(A_2),f(suc(A_2)))
          | ~ 'E'('0',f(suc(B_6)))
          | ~ 'E'('0',f(B_6))
          | ~ iLEQ(suc(A_2),suc(B_6))
          | ~ 'E'('0',f(A_2))
          | ~ 'E'('0',f(suc(A_2))) ) ),
    inference(miniscoping,[status(thm)],[f1]) ).

fof(f22,plain,
    ! [E,X0,X1] :
      ( 'E'(f(X1),f(suc(X1)))
      | 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(suc(X1)))
      | ~ 'E'('0',f(X1))
      | ~ iLEQ(suc(X0),suc(X1))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(cnf_transformation,[status(thm)],[f21]) ).

fof(f23,plain,
    ! [B_2] :
      ( 'LE'(f(B_2),s('0'))
      | 'E'(s('0'),f(suc(suc(B_2))))
      | ~ 'LE'(f(suc(suc(B_2))),s(s('0'))) ),
    inference(miniscoping,[status(thm)],[f2]) ).

fof(f24,plain,
    ! [LE,X0,E] :
      ( 'LE'(f(X0),s('0'))
      | 'E'(s('0'),f(suc(suc(X0))))
      | ~ 'LE'(f(suc(suc(X0))),s(s('0'))) ),
    inference(cnf_transformation,[status(thm)],[f23]) ).

fof(f25,plain,
    ! [A] : 'LE'(f(A),s(s('0'))),
    inference(miniscoping,[status(thm)],[f3]) ).

fof(f26,plain,
    ! [LE,X0] : 'LE'(f(X0),s(s('0'))),
    inference(cnf_transformation,[status(thm)],[f25]) ).

fof(f27,plain,
    ! [A_1] :
      ( iLEQ(suc(A_1),suc(A_1))
      | 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(A_1)) ),
    inference(miniscoping,[status(thm)],[f4]) ).

fof(f28,plain,
    ! [E,X0] :
      ( iLEQ(suc(X0),suc(X0))
      | 'E'(f(X0),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(X0)) ),
    inference(cnf_transformation,[status(thm)],[f27]) ).

fof(f29,plain,
    ! [B_3] :
      ( 'E'(f(B_3),f(suc(B_3)))
      | ! [A_1] :
          ( ~ 'E'(f(A_1),f(suc(A_1)))
          | ~ 'E'(s('0'),f(B_3))
          | ~ 'E'(s('0'),f(suc(B_3)))
          | ~ 'E'(s('0'),f(suc(A_1)))
          | ~ 'E'(s('0'),f(A_1))
          | ~ 'E'(s('0'),f(suc(suc(A_1))))
          | ~ iLEQ(suc(A_1),suc(B_3)) ) ),
    inference(miniscoping,[status(thm)],[f5]) ).

fof(f30,plain,
    ! [X0,X1,E] :
      ( 'E'(f(X1),f(suc(X1)))
      | ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(suc(X0))))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(cnf_transformation,[status(thm)],[f29]) ).

fof(f31,plain,
    ! [A_2] :
      ( 'E'(f(A_2),f(suc(A_2)))
      | ! [B_6] :
          ( ~ 'E'('0',f(suc(B_6)))
          | ~ 'E'(f(B_6),f(suc(B_6)))
          | ~ 'E'('0',f(B_6))
          | ~ iLEQ(suc(A_2),suc(B_6))
          | ~ 'E'('0',f(A_2))
          | ~ 'E'('0',f(suc(suc(B_6))))
          | ~ 'E'('0',f(suc(A_2))) ) ),
    inference(miniscoping,[status(thm)],[f6]) ).

fof(f32,plain,
    ! [E,X0,X1] :
      ( 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(suc(X1)))
      | ~ 'E'(f(X1),f(suc(X1)))
      | ~ 'E'('0',f(X1))
      | ~ iLEQ(suc(X0),suc(X1))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X1))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(cnf_transformation,[status(thm)],[f31]) ).

fof(f33,plain,
    ! [B_2] :
      ( 'LE'(f(B_2),s('0'))
      | 'E'(s('0'),f(B_2))
      | ~ 'LE'(f(B_2),s(s('0'))) ),
    inference(miniscoping,[status(thm)],[f7]) ).

fof(f34,plain,
    ! [LE,X0,E] :
      ( 'LE'(f(X0),s('0'))
      | 'E'(s('0'),f(X0))
      | ~ 'LE'(f(X0),s(s('0'))) ),
    inference(cnf_transformation,[status(thm)],[f33]) ).

fof(f35,plain,
    ! [B_5] :
      ( 'LE'(f(B_5),'0')
      | 'E'('0',f(B_5))
      | ~ 'LE'(f(B_5),s('0')) ),
    inference(miniscoping,[status(thm)],[f8]) ).

fof(f36,plain,
    ! [LE,X0,E] :
      ( 'LE'(f(X0),'0')
      | 'E'('0',f(X0))
      | ~ 'LE'(f(X0),s('0')) ),
    inference(cnf_transformation,[status(thm)],[f35]) ).

fof(f37,plain,
    ! [A_2] :
      ( iLEQ(suc(A_2),suc(A_2))
      | ~ 'E'('0',f(A_2))
      | ~ 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(suc(A_2)))
      | ~ 'E'('0',f(suc(suc(A_2)))) ),
    inference(miniscoping,[status(thm)],[f9]) ).

fof(f38,plain,
    ! [E,X0] :
      ( iLEQ(suc(X0),suc(X0))
      | ~ 'E'('0',f(X0))
      | ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(suc(X0)))
      | ~ 'E'('0',f(suc(suc(X0)))) ),
    inference(cnf_transformation,[status(thm)],[f37]) ).

fof(f39,plain,
    ! [B_6] :
      ( 'E'(f(B_6),f(suc(B_6)))
      | ~ 'E'('0',f(suc(B_6)))
      | ! [A_2] :
          ( ~ 'E'(f(A_2),f(suc(A_2)))
          | ~ 'E'('0',f(B_6))
          | ~ iLEQ(suc(A_2),suc(B_6))
          | ~ 'E'('0',f(A_2))
          | ~ 'E'('0',f(suc(suc(A_2))))
          | ~ 'E'('0',f(suc(A_2))) ) ),
    inference(miniscoping,[status(thm)],[f10]) ).

fof(f40,plain,
    ! [E,X0,X1] :
      ( 'E'(f(X1),f(suc(X1)))
      | ~ 'E'('0',f(suc(X1)))
      | ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(X1))
      | ~ iLEQ(suc(X0),suc(X1))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X0))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(cnf_transformation,[status(thm)],[f39]) ).

fof(f41,plain,
    ! [A_2] :
      ( iLEQ(suc(A_2),suc(A_2))
      | 'E'(f(A_2),f(suc(A_2)))
      | ~ 'E'('0',f(suc(A_2)))
      | ~ 'E'('0',f(A_2)) ),
    inference(miniscoping,[status(thm)],[f11]) ).

fof(f42,plain,
    ! [E,X0] :
      ( iLEQ(suc(X0),suc(X0))
      | 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(suc(X0)))
      | ~ 'E'('0',f(X0)) ),
    inference(cnf_transformation,[status(thm)],[f41]) ).

fof(f43,plain,
    ! [B_6] :
      ( ~ 'E'('0',f(suc(B_6)))
      | ~ 'E'(f(B_6),f(suc(B_6)))
      | ! [A_2] :
          ( ~ 'E'(f(A_2),f(suc(A_2)))
          | ~ 'E'('0',f(B_6))
          | ~ iLEQ(suc(A_2),suc(B_6))
          | ~ 'E'('0',f(A_2))
          | ~ 'E'('0',f(suc(suc(A_2))))
          | ~ 'E'('0',f(suc(suc(B_6))))
          | ~ 'E'('0',f(suc(A_2))) ) ),
    inference(miniscoping,[status(thm)],[f12]) ).

fof(f44,plain,
    ! [E,X0,X1] :
      ( ~ 'E'('0',f(suc(X1)))
      | ~ 'E'(f(X1),f(suc(X1)))
      | ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(X1))
      | ~ iLEQ(suc(X0),suc(X1))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X0))))
      | ~ 'E'('0',f(suc(suc(X1))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(cnf_transformation,[status(thm)],[f43]) ).

fof(f45,plain,
    ! [B_5] :
      ( 'LE'(f(B_5),'0')
      | 'E'('0',f(suc(B_5)))
      | ~ 'LE'(f(suc(B_5)),s('0')) ),
    inference(miniscoping,[status(thm)],[f13]) ).

fof(f46,plain,
    ! [LE,X0,E] :
      ( 'LE'(f(X0),'0')
      | 'E'('0',f(suc(X0)))
      | ~ 'LE'(f(suc(X0)),s('0')) ),
    inference(cnf_transformation,[status(thm)],[f45]) ).

fof(f47,plain,
    ! [B_5] :
      ( 'LE'(f(B_5),'0')
      | 'E'('0',f(suc(suc(B_5))))
      | ~ 'LE'(f(suc(suc(B_5))),s('0')) ),
    inference(miniscoping,[status(thm)],[f14]) ).

fof(f48,plain,
    ! [LE,X0,E] :
      ( 'LE'(f(X0),'0')
      | 'E'('0',f(suc(suc(X0))))
      | ~ 'LE'(f(suc(suc(X0))),s('0')) ),
    inference(cnf_transformation,[status(thm)],[f47]) ).

fof(f49,plain,
    ! [LE] : ~ 'LE'(f(z),'0'),
    inference(cnf_transformation,[status(thm)],[f15]) ).

fof(f50,plain,
    ! [B_2] :
      ( 'LE'(f(B_2),s('0'))
      | 'E'(s('0'),f(suc(B_2)))
      | ~ 'LE'(f(suc(B_2)),s(s('0'))) ),
    inference(miniscoping,[status(thm)],[f16]) ).

fof(f51,plain,
    ! [LE,X0,E] :
      ( 'LE'(f(X0),s('0'))
      | 'E'(s('0'),f(suc(X0)))
      | ~ 'LE'(f(suc(X0)),s(s('0'))) ),
    inference(cnf_transformation,[status(thm)],[f50]) ).

fof(f52,plain,
    ! [B_3] :
      ( 'E'(f(B_3),f(suc(B_3)))
      | ! [A_1] :
          ( 'E'(f(A_1),f(suc(A_1)))
          | ~ 'E'(s('0'),f(B_3))
          | ~ 'E'(s('0'),f(suc(B_3)))
          | ~ 'E'(s('0'),f(suc(A_1)))
          | ~ 'E'(s('0'),f(A_1))
          | ~ iLEQ(suc(A_1),suc(B_3)) ) ),
    inference(miniscoping,[status(thm)],[f17]) ).

fof(f53,plain,
    ! [X0,X1,E] :
      ( 'E'(f(X1),f(suc(X1)))
      | 'E'(f(X0),f(suc(X0)))
      | ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(X0))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(cnf_transformation,[status(thm)],[f52]) ).

fof(f54,plain,
    ! [A_1] :
      ( iLEQ(suc(A_1),suc(A_1))
      | ~ 'E'(s('0'),f(A_1))
      | ~ 'E'(f(A_1),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(A_1)))
      | ~ 'E'(s('0'),f(suc(suc(A_1)))) ),
    inference(miniscoping,[status(thm)],[f18]) ).

fof(f55,plain,
    ! [E,X0] :
      ( iLEQ(suc(X0),suc(X0))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X0)))) ),
    inference(cnf_transformation,[status(thm)],[f54]) ).

fof(f56,plain,
    ! [A_1] :
      ( 'E'(f(A_1),f(suc(A_1)))
      | ! [B_3] :
          ( ~ 'E'(f(B_3),f(suc(B_3)))
          | ~ 'E'(s('0'),f(B_3))
          | ~ 'E'(s('0'),f(suc(B_3)))
          | ~ 'E'(s('0'),f(suc(A_1)))
          | ~ 'E'(s('0'),f(suc(suc(B_3))))
          | ~ 'E'(s('0'),f(A_1))
          | ~ iLEQ(suc(A_1),suc(B_3)) ) ),
    inference(miniscoping,[status(thm)],[f19]) ).

fof(f57,plain,
    ! [X0,X1,E] :
      ( 'E'(f(X0),f(suc(X0)))
      | ~ 'E'(f(X1),f(suc(X1)))
      | ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X1))))
      | ~ 'E'(s('0'),f(X0))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(cnf_transformation,[status(thm)],[f56]) ).

fof(f58,plain,
    ! [A_1] :
      ( ~ 'E'(f(A_1),f(suc(A_1)))
      | ! [B_3] :
          ( ~ 'E'(f(B_3),f(suc(B_3)))
          | ~ 'E'(s('0'),f(B_3))
          | ~ 'E'(s('0'),f(suc(B_3)))
          | ~ 'E'(s('0'),f(suc(A_1)))
          | ~ 'E'(s('0'),f(suc(suc(B_3))))
          | ~ 'E'(s('0'),f(A_1))
          | ~ 'E'(s('0'),f(suc(suc(A_1))))
          | ~ iLEQ(suc(A_1),suc(B_3)) ) ),
    inference(miniscoping,[status(thm)],[f20]) ).

fof(f59,plain,
    ! [X0,X1,E] :
      ( ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'(f(X1),f(suc(X1)))
      | ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X1))))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(suc(X0))))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(cnf_transformation,[status(thm)],[f58]) ).

fof(f60,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),s('0'))
      | 'E'(s('0'),f(suc(suc(X0)))) ),
    inference(backward_subsumption_resolution,[status(thm)],[f24,f26]) ).

fof(f61,plain,
    ! [E,X0,X1] :
      ( 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(suc(X1)))
      | ~ 'E'('0',f(X1))
      | ~ iLEQ(suc(X0),suc(X1))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X1))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f32,f22]) ).

fof(f62,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),s('0'))
      | 'E'(s('0'),f(X0)) ),
    inference(forward_subsumption_resolution,[status(thm)],[f34,f26]) ).

fof(f63,plain,
    ! [E,X0,X1] :
      ( 'E'(f(X1),f(suc(X1)))
      | ~ 'E'('0',f(suc(X1)))
      | ~ 'E'('0',f(X1))
      | ~ iLEQ(suc(X0),suc(X1))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X0))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f40,f22]) ).

fof(f64,plain,
    ! [E,X0] :
      ( iLEQ(suc(X0),suc(X0))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(X0)))
      | ~ 'E'('0',f(suc(suc(X0)))) ),
    inference(backward_subsumption_resolution,[status(thm)],[f38,f42]) ).

fof(f65,plain,
    ! [E,X0,X1] :
      ( ~ 'E'('0',f(suc(X1)))
      | ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(X1))
      | ~ iLEQ(suc(X0),suc(X1))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X0))))
      | ~ 'E'('0',f(suc(suc(X1))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f44,f63]) ).

fof(f66,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),s('0'))
      | 'E'(s('0'),f(suc(X0))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f51,f26]) ).

fof(f67,plain,
    ! [X0,X1,E] :
      ( 'E'(f(X1),f(suc(X1)))
      | ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(suc(X0))))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(backward_subsumption_resolution,[status(thm)],[f30,f53]) ).

fof(f68,plain,
    ! [E,X0] :
      ( iLEQ(suc(X0),suc(X0))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X0)))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f55,f28]) ).

fof(f69,plain,
    ! [X0,X1,E] :
      ( 'E'(f(X0),f(suc(X0)))
      | ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X1))))
      | ~ 'E'(s('0'),f(X0))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(forward_subsumption_resolution,[status(thm)],[f57,f53]) ).

fof(f70,plain,
    ! [X0,X1,E] :
      ( ~ 'E'(f(X1),f(suc(X1)))
      | ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X1))))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(suc(X0))))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(forward_subsumption_resolution,[status(thm)],[f59,f69]) ).

fof(f71,plain,
    ! [X0,X1,E] :
      ( ~ 'E'(s('0'),f(X1))
      | ~ 'E'(s('0'),f(suc(X1)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X1))))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(suc(X0))))
      | ~ iLEQ(suc(X0),suc(X1)) ),
    inference(backward_subsumption_resolution,[status(thm)],[f70,f67]) ).

fof(f72,plain,
    ! [E,X0] :
      ( ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X0))))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(suc(suc(X0))))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(suc(X0)))) ),
    inference(resolution,[status(thm)],[f71,f68]) ).

fof(f73,plain,
    ! [E,X0] :
      ( ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(X0))
      | ~ 'E'(s('0'),f(suc(suc(X0)))) ),
    inference(duplicate_literals_removal,[status(thm)],[f72]) ).

fof(f74,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),s('0'))
      | ~ 'E'(s('0'),f(suc(X0)))
      | ~ 'E'(s('0'),f(X0)) ),
    inference(resolution,[status(thm)],[f73,f60]) ).

fof(f77,plain,
    ! [LE,X0] : 'LE'(f(X0),s('0')),
    inference(backward_subsumption_resolution,[status(thm)],[f66,f78]) ).

fof(f78,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),s('0'))
      | ~ 'E'(s('0'),f(suc(X0))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f74,f62]) ).

fof(f80,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),'0')
      | 'E'('0',f(suc(suc(X0)))) ),
    inference(backward_subsumption_resolution,[status(thm)],[f48,f77]) ).

fof(f81,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),'0')
      | 'E'('0',f(suc(X0))) ),
    inference(backward_subsumption_resolution,[status(thm)],[f46,f77]) ).

fof(f82,plain,
    ! [E,X0,LE] :
      ( 'LE'(f(X0),'0')
      | 'E'('0',f(X0)) ),
    inference(backward_subsumption_resolution,[status(thm)],[f36,f77]) ).

fof(f83,plain,
    ! [E] : 'E'('0',f(suc(suc(z)))),
    inference(resolution,[status(thm)],[f80,f49]) ).

fof(f84,plain,
    ! [E] : 'E'('0',f(suc(z))),
    inference(resolution,[status(thm)],[f81,f49]) ).

fof(f85,plain,
    ! [E,X0] :
      ( ~ 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(z))
      | ~ iLEQ(suc(X0),suc(z))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X0))))
      | ~ 'E'('0',f(suc(suc(z))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(resolution,[status(thm)],[f84,f65]) ).

fof(f88,plain,
    ! [E,X0] :
      ( 'E'(f(X0),f(suc(X0)))
      | ~ 'E'('0',f(z))
      | ~ iLEQ(suc(X0),suc(z))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(z))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(resolution,[status(thm)],[f84,f61]) ).

fof(f90,definition,
    ! [E,X0] :
      ( sQ0_spl
    <=> ( ~ 'E'(f(X0),f(suc(X0)))
        | ~ iLEQ(suc(X0),suc(z))
        | ~ 'E'('0',f(X0))
        | ~ 'E'('0',f(suc(suc(X0))))
        | ~ 'E'('0',f(suc(X0))) ) ),
    introduced(definition,[new_symbols(definition,[sQ0_spl])],[split_symbol_definition]) ).

fof(f91,plain,
    ! [E,X0] :
      ( ~ sQ0_spl
      | ~ 'E'(f(X0),f(suc(X0)))
      | ~ iLEQ(suc(X0),suc(z))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X0))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(component_clause,[status(thm)],[f90]) ).

fof(f93,definition,
    ! [E] :
      ( sQ1_spl
    <=> 'E'('0',f(suc(suc(z)))) ),
    introduced(definition,[new_symbols(definition,[sQ1_spl])],[split_symbol_definition]) ).

fof(f95,plain,
    ! [E] :
      ( sQ1_spl
      | ~ 'E'('0',f(suc(suc(z)))) ),
    inference(component_clause,[status(thm)],[f93]) ).

fof(f96,definition,
    ! [E] :
      ( sQ2_spl
    <=> 'E'('0',f(z)) ),
    introduced(definition,[new_symbols(definition,[sQ2_spl])],[split_symbol_definition]) ).

fof(f98,plain,
    ! [E] :
      ( sQ2_spl
      | ~ 'E'('0',f(z)) ),
    inference(component_clause,[status(thm)],[f96]) ).

fof(f99,plain,
    ( ~ sQ2_spl
    | ~ sQ1_spl
    | sQ0_spl ),
    inference(split_clause,[status(thm)],[f85,f90,f93,f96]) ).

fof(f103,definition,
    ( sQ4_spl
  <=> iLEQ(suc(z),suc(z)) ),
    introduced(definition,[new_symbols(definition,[sQ4_spl])],[split_symbol_definition]) ).

fof(f104,plain,
    ( ~ sQ4_spl
    | iLEQ(suc(z),suc(z)) ),
    inference(component_clause,[status(thm)],[f103]) ).

fof(f111,definition,
    ! [E,X0] :
      ( sQ6_spl
    <=> ( 'E'(f(X0),f(suc(X0)))
        | ~ iLEQ(suc(X0),suc(z))
        | ~ 'E'('0',f(X0))
        | ~ 'E'('0',f(suc(X0))) ) ),
    introduced(definition,[new_symbols(definition,[sQ6_spl])],[split_symbol_definition]) ).

fof(f112,plain,
    ! [E,X0] :
      ( ~ sQ6_spl
      | 'E'(f(X0),f(suc(X0)))
      | ~ iLEQ(suc(X0),suc(z))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(component_clause,[status(thm)],[f111]) ).

fof(f114,plain,
    ( ~ sQ2_spl
    | ~ sQ1_spl
    | sQ6_spl ),
    inference(split_clause,[status(thm)],[f88,f111,f93,f96]) ).

fof(f116,plain,
    ! [E] : 'E'('0',f(z)),
    inference(resolution,[status(thm)],[f82,f49]) ).

fof(f117,plain,
    ( sQ2_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f116,f98]) ).

fof(f118,plain,
    sQ2_spl,
    inference(contradiction_clause,[status(thm)],[f117]) ).

fof(f119,plain,
    ( sQ1_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f95,f83]) ).

fof(f120,plain,
    sQ1_spl,
    inference(contradiction_clause,[status(thm)],[f119]) ).

fof(f121,plain,
    ! [E,X0] :
      ( ~ sQ0_spl
      | ~ sQ6_spl
      | ~ iLEQ(suc(X0),suc(z))
      | ~ 'E'('0',f(X0))
      | ~ 'E'('0',f(suc(suc(X0))))
      | ~ 'E'('0',f(suc(X0))) ),
    inference(forward_subsumption_resolution,[status(thm)],[f91,f112]) ).

fof(f122,plain,
    ! [E] :
      ( iLEQ(suc(z),suc(z))
      | ~ 'E'('0',f(z))
      | ~ 'E'('0',f(suc(z))) ),
    inference(resolution,[status(thm)],[f83,f64]) ).

fof(f137,definition,
    ! [E] :
      ( sQ7_spl
    <=> 'E'('0',f(suc(z))) ),
    introduced(definition,[new_symbols(definition,[sQ7_spl])],[split_symbol_definition]) ).

fof(f139,plain,
    ! [E] :
      ( sQ7_spl
      | ~ 'E'('0',f(suc(z))) ),
    inference(component_clause,[status(thm)],[f137]) ).

fof(f140,plain,
    ( sQ4_spl
    | ~ sQ2_spl
    | ~ sQ7_spl ),
    inference(split_clause,[status(thm)],[f122,f137,f96,f103]) ).

fof(f182,plain,
    ( sQ7_spl
    | $false ),
    inference(forward_subsumption_resolution,[status(thm)],[f139,f84]) ).

fof(f183,plain,
    sQ7_spl,
    inference(contradiction_clause,[status(thm)],[f182]) ).

fof(f184,plain,
    ! [E] :
      ( ~ sQ0_spl
      | ~ sQ6_spl
      | ~ sQ4_spl
      | ~ 'E'('0',f(z))
      | ~ 'E'('0',f(suc(suc(z))))
      | ~ 'E'('0',f(suc(z))) ),
    inference(resolution,[status(thm)],[f104,f121]) ).

fof(f185,plain,
    ( ~ sQ0_spl
    | ~ sQ6_spl
    | ~ sQ4_spl
    | ~ sQ2_spl
    | ~ sQ1_spl
    | ~ sQ7_spl ),
    inference(split_clause,[status(thm)],[f184,f137,f93,f96,f103,f111,f90]) ).

fof(f186,plain,
    $false,
    inference(sat_refutation,[status(thm)],[f99,f114,f118,f120,f140,f183,f185]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02  % Problem  : SYO657-1 : TPTP v9.3.1. Released v7.3.0.
% 0.00/0.03  % Command  : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.35  % Computer : n026.cluster.edu
% 0.08/0.35  % Model    : x86_64 x86_64
% 0.08/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.35  % Memory   : 8046.5625MB
% 0.08/0.35  % OS       : Linux 6.8.0-71-generic
% 0.08/0.35  % CPULimit : 300
% 0.08/0.35  % WCLimit  : 300
% 0.08/0.35  % DateTime : Mon Sep 21 12:10:37 UTC 2026
% 0.08/0.35  % CPUTime  : 
% 0.12/0.36  % Drodi V4.1.1
% 0.12/0.37  % Refutation found
% 0.12/0.37  % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.12/0.37  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.12/0.39  % Elapsed time: 0.033125 seconds
% 0.12/0.39  % CPU time: 0.090714 seconds
% 0.12/0.39  % Total memory used: 2.541 MB
% 0.12/0.39  % Net memory used: 2.441 MB
%------------------------------------------------------------------------------