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CSE_E---1.7.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : CSE_E---1.7
% Problem  : SWX203+1 : TPTP v9.3.0. Released v9.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d

% 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  : 300s
% DateTime : Tue May  5 05:34:43 PM UTC 2026

% Result   : Theorem 2.05s 1.94s
% Output   : CNFRefutation 2.05s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   28
%            Number of leaves      :   18
% Syntax   : Number of formulae    :   94 (  47 unt;   0 def)
%            Number of atoms       :  241 (  56 equ)
%            Maximal formula atoms :    7 (   2 avg)
%            Number of connectives :  210 (  63   ~; 128   |;  10   &)
%                                         (   5 <=>;   4  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    9 (   3 avg)
%            Maximal term depth    :    6 (   2 avg)
%            Number of predicates  :    6 (   4 usr;   1 prp; 0-2 aty)
%            Number of functors    :    8 (   8 usr;   2 con; 0-2 aty)
%            Number of variables   :  143 (   9 sgn  53   !;   2   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(axiom_021,axiom,
    ! [X3,X7] : rev(cons(X3,X7)) = append(rev(X7),cons(X3,nil)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_021) ).

fof(axiom_018,axiom,
    ! [X3] : append(nil,X3) = X3,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_018) ).

fof(axiom_017,axiom,
    ! [X3,X7] :
      ( unique(cons(X3,X7))
    <=> ( ~ elemNat(X3,X7)
        & unique(X7) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_017) ).

fof(axiom_014,axiom,
    ! [X1] : ~ elemNat(X1,nil),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_014) ).

fof(axiom_020,axiom,
    rev(nil) = nil,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_020) ).

fof(axiom_019,axiom,
    ! [X3,X4,X7] : append(cons(X4,X7),X3) = cons(X4,append(X7,X3)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_019) ).

fof(goal_022,conjecture,
    ? [X7] :
      ~ ( sorted(rev(X7))
       => ( unique(X7)
         => leqNat(lengthNat(X7),s(s(s(z)))) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',goal_022) ).

fof(axiom_016,axiom,
    unique(nil),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_016) ).

fof(axiom_013,axiom,
    ! [X3,X7] : lengthNat(cons(X3,X7)) = s(lengthNat(X7)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_013) ).

fof(axiom_012,axiom,
    lengthNat(nil) = z,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_012) ).

fof(axiom_011,axiom,
    ! [X3,X6,X7] :
      ( sorted(cons(X3,cons(X6,X7)))
    <=> ( leqNat(X3,X6)
        & sorted(cons(X6,X7)) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_011) ).

fof(axiom_010,axiom,
    ! [X3] : sorted(cons(X3,nil)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_010) ).

fof(axiom_006,axiom,
    ! [X3] : leqNat(z,X3),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_006) ).

fof(axiom_008,axiom,
    ! [X4,X5] :
      ( leqNat(s(X4),s(X5))
    <=> leqNat(X4,X5) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_008) ).

fof(axiom_015,axiom,
    ! [X1,X4,X7] :
      ( elemNat(X1,cons(X4,X7))
    <=> ( X1 = X4
        | elemNat(X1,X7) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_015) ).

fof(axiom_005,axiom,
    ! [X1] : z != s(X1),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_005) ).

fof(axiom_007,axiom,
    ! [X4] : ~ leqNat(s(X4),z),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_007) ).

fof(axiom_004,axiom,
    ! [X1] : proj1S(s(X1)) = X1,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',axiom_004) ).

fof(c_0_18,plain,
    ! [X67,X68] : rev(cons(X67,X68)) = append(rev(X68),cons(X67,nil)),
    inference(variable_rename,[status(thm)],[axiom_021]) ).

fof(c_0_19,plain,
    ! [X63] : append(nil,X63) = X63,
    inference(variable_rename,[status(thm)],[axiom_018]) ).

fof(c_0_20,plain,
    ! [X3,X7] :
      ( unique(cons(X3,X7))
    <=> ( ~ elemNat(X3,X7)
        & unique(X7) ) ),
    inference(fof_simplification,[status(thm)],[axiom_017]) ).

fof(c_0_21,plain,
    ! [X1] : ~ elemNat(X1,nil),
    inference(fof_simplification,[status(thm)],[axiom_014]) ).

cnf(c_0_22,plain,
    rev(cons(X1,X2)) = append(rev(X2),cons(X1,nil)),
    inference(split_conjunct,[status(thm)],[c_0_18]) ).

cnf(c_0_23,plain,
    rev(nil) = nil,
    inference(split_conjunct,[status(thm)],[axiom_020]) ).

cnf(c_0_24,plain,
    append(nil,X1) = X1,
    inference(split_conjunct,[status(thm)],[c_0_19]) ).

fof(c_0_25,plain,
    ! [X64,X65,X66] : append(cons(X65,X66),X64) = cons(X65,append(X66,X64)),
    inference(variable_rename,[status(thm)],[axiom_019]) ).

fof(c_0_26,plain,
    ! [X61,X62] :
      ( ( ~ elemNat(X61,X62)
        | ~ unique(cons(X61,X62)) )
      & ( unique(X62)
        | ~ unique(cons(X61,X62)) )
      & ( elemNat(X61,X62)
        | ~ unique(X62)
        | unique(cons(X61,X62)) ) ),
    inference(distribute,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[c_0_20])])]) ).

fof(c_0_27,plain,
    ! [X57] : ~ elemNat(X57,nil),
    inference(variable_rename,[status(thm)],[c_0_21]) ).

fof(c_0_28,negated_conjecture,
    ~ ? [X7] :
        ~ ( sorted(rev(X7))
         => ( unique(X7)
           => leqNat(lengthNat(X7),s(s(s(z)))) ) ),
    inference(assume_negation,[status(cth)],[goal_022]) ).

cnf(c_0_29,plain,
    rev(cons(X1,nil)) = cons(X1,nil),
    inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_22,c_0_23]),c_0_24]) ).

cnf(c_0_30,plain,
    append(cons(X1,X2),X3) = cons(X1,append(X2,X3)),
    inference(split_conjunct,[status(thm)],[c_0_25]) ).

cnf(c_0_31,plain,
    ( elemNat(X1,X2)
    | unique(cons(X1,X2))
    | ~ unique(X2) ),
    inference(split_conjunct,[status(thm)],[c_0_26]) ).

cnf(c_0_32,plain,
    unique(nil),
    inference(split_conjunct,[status(thm)],[axiom_016]) ).

cnf(c_0_33,plain,
    ~ elemNat(X1,nil),
    inference(split_conjunct,[status(thm)],[c_0_27]) ).

fof(c_0_34,negated_conjecture,
    ! [X69] :
      ( ~ sorted(rev(X69))
      | ~ unique(X69)
      | leqNat(lengthNat(X69),s(s(s(z)))) ),
    inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[c_0_28])]) ).

fof(c_0_35,plain,
    ! [X55,X56] : lengthNat(cons(X55,X56)) = s(lengthNat(X56)),
    inference(variable_rename,[status(thm)],[axiom_013]) ).

cnf(c_0_36,plain,
    rev(cons(X1,cons(X2,nil))) = cons(X2,cons(X1,nil)),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_22,c_0_29]),c_0_30]),c_0_24]) ).

cnf(c_0_37,plain,
    unique(cons(X1,nil)),
    inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_31,c_0_32]),c_0_33]) ).

cnf(c_0_38,negated_conjecture,
    ( leqNat(lengthNat(X1),s(s(s(z))))
    | ~ sorted(rev(X1))
    | ~ unique(X1) ),
    inference(split_conjunct,[status(thm)],[c_0_34]) ).

cnf(c_0_39,plain,
    lengthNat(cons(X1,X2)) = s(lengthNat(X2)),
    inference(split_conjunct,[status(thm)],[c_0_35]) ).

cnf(c_0_40,plain,
    rev(cons(X1,cons(X2,cons(X3,nil)))) = cons(X3,cons(X2,cons(X1,nil))),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_22,c_0_36]),c_0_30]),c_0_30]),c_0_24]) ).

cnf(c_0_41,plain,
    ( unique(cons(X1,cons(X2,nil)))
    | elemNat(X1,cons(X2,nil)) ),
    inference(spm,[status(thm)],[c_0_31,c_0_37]) ).

cnf(c_0_42,negated_conjecture,
    ( leqNat(s(lengthNat(X1)),s(s(s(z))))
    | ~ unique(cons(X2,X1))
    | ~ sorted(rev(cons(X2,X1))) ),
    inference(spm,[status(thm)],[c_0_38,c_0_39]) ).

cnf(c_0_43,plain,
    rev(cons(X1,cons(X2,cons(X3,cons(X4,nil))))) = cons(X4,cons(X3,cons(X2,cons(X1,nil)))),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_22,c_0_40]),c_0_30]),c_0_30]),c_0_30]),c_0_24]) ).

cnf(c_0_44,plain,
    lengthNat(nil) = z,
    inference(split_conjunct,[status(thm)],[axiom_012]) ).

cnf(c_0_45,plain,
    ( unique(cons(X1,cons(X2,cons(X3,nil))))
    | elemNat(X1,cons(X2,cons(X3,nil)))
    | elemNat(X2,cons(X3,nil)) ),
    inference(spm,[status(thm)],[c_0_31,c_0_41]) ).

cnf(c_0_46,negated_conjecture,
    ( leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ unique(cons(X1,cons(X2,cons(X3,cons(X4,nil)))))
    | ~ sorted(cons(X4,cons(X3,cons(X2,cons(X1,nil))))) ),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_42,c_0_43]),c_0_39]),c_0_39]),c_0_39]),c_0_44]) ).

cnf(c_0_47,plain,
    ( unique(cons(X1,cons(X2,cons(X3,cons(X4,nil)))))
    | elemNat(X1,cons(X2,cons(X3,cons(X4,nil))))
    | elemNat(X2,cons(X3,cons(X4,nil)))
    | elemNat(X3,cons(X4,nil)) ),
    inference(spm,[status(thm)],[c_0_31,c_0_45]) ).

fof(c_0_48,plain,
    ! [X52,X53,X54] :
      ( ( leqNat(X52,X53)
        | ~ sorted(cons(X52,cons(X53,X54))) )
      & ( sorted(cons(X53,X54))
        | ~ sorted(cons(X52,cons(X53,X54))) )
      & ( ~ leqNat(X52,X53)
        | ~ sorted(cons(X53,X54))
        | sorted(cons(X52,cons(X53,X54))) ) ),
    inference(distribute,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[axiom_011])])]) ).

cnf(c_0_49,negated_conjecture,
    ( elemNat(X1,cons(X2,cons(X3,cons(X4,nil))))
    | elemNat(X2,cons(X3,cons(X4,nil)))
    | elemNat(X3,cons(X4,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ sorted(cons(X4,cons(X3,cons(X2,cons(X1,nil))))) ),
    inference(spm,[status(thm)],[c_0_46,c_0_47]) ).

cnf(c_0_50,plain,
    ( sorted(cons(X1,cons(X2,X3)))
    | ~ leqNat(X1,X2)
    | ~ sorted(cons(X2,X3)) ),
    inference(split_conjunct,[status(thm)],[c_0_48]) ).

cnf(c_0_51,negated_conjecture,
    ( elemNat(X1,cons(X2,cons(X3,cons(X4,nil))))
    | elemNat(X2,cons(X3,cons(X4,nil)))
    | elemNat(X3,cons(X4,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ sorted(cons(X3,cons(X2,cons(X1,nil))))
    | ~ leqNat(X4,X3) ),
    inference(spm,[status(thm)],[c_0_49,c_0_50]) ).

fof(c_0_52,plain,
    ! [X51] : sorted(cons(X51,nil)),
    inference(variable_rename,[status(thm)],[axiom_010]) ).

cnf(c_0_53,negated_conjecture,
    ( leqNat(s(s(z)),s(s(s(z))))
    | ~ unique(cons(X1,cons(X2,nil)))
    | ~ sorted(cons(X2,cons(X1,nil))) ),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_42,c_0_36]),c_0_39]),c_0_44]) ).

cnf(c_0_54,negated_conjecture,
    ( elemNat(X1,cons(X2,cons(X3,cons(X4,nil))))
    | elemNat(X2,cons(X3,cons(X4,nil)))
    | elemNat(X3,cons(X4,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ sorted(cons(X2,cons(X1,nil)))
    | ~ leqNat(X4,X3)
    | ~ leqNat(X3,X2) ),
    inference(spm,[status(thm)],[c_0_51,c_0_50]) ).

cnf(c_0_55,plain,
    sorted(cons(X1,nil)),
    inference(split_conjunct,[status(thm)],[c_0_52]) ).

fof(c_0_56,plain,
    ! [X47] : leqNat(z,X47),
    inference(variable_rename,[status(thm)],[axiom_006]) ).

cnf(c_0_57,negated_conjecture,
    ( elemNat(X1,cons(X2,nil))
    | leqNat(s(s(z)),s(s(s(z))))
    | ~ sorted(cons(X2,cons(X1,nil))) ),
    inference(spm,[status(thm)],[c_0_53,c_0_41]) ).

cnf(c_0_58,negated_conjecture,
    ( elemNat(X1,cons(X2,cons(X3,cons(X4,nil))))
    | elemNat(X2,cons(X3,cons(X4,nil)))
    | elemNat(X3,cons(X4,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ leqNat(X4,X3)
    | ~ leqNat(X3,X2)
    | ~ leqNat(X2,X1) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_54,c_0_50]),c_0_55])]) ).

cnf(c_0_59,plain,
    leqNat(z,X1),
    inference(split_conjunct,[status(thm)],[c_0_56]) ).

fof(c_0_60,plain,
    ! [X49,X50] :
      ( ( ~ leqNat(s(X49),s(X50))
        | leqNat(X49,X50) )
      & ( ~ leqNat(X49,X50)
        | leqNat(s(X49),s(X50)) ) ),
    inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[axiom_008])]) ).

fof(c_0_61,plain,
    ! [X58,X59,X60] :
      ( ( ~ elemNat(X58,cons(X59,X60))
        | X58 = X59
        | elemNat(X58,X60) )
      & ( X58 != X59
        | elemNat(X58,cons(X59,X60)) )
      & ( ~ elemNat(X58,X60)
        | elemNat(X58,cons(X59,X60)) ) ),
    inference(distribute,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[axiom_015])])]) ).

cnf(c_0_62,negated_conjecture,
    ( elemNat(X1,cons(X2,nil))
    | leqNat(s(s(z)),s(s(s(z))))
    | ~ leqNat(X2,X1) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_57,c_0_50]),c_0_55])]) ).

cnf(c_0_63,negated_conjecture,
    ( elemNat(X1,cons(X2,cons(X3,cons(z,nil))))
    | elemNat(X2,cons(X3,cons(z,nil)))
    | elemNat(X3,cons(z,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ leqNat(X3,X2)
    | ~ leqNat(X2,X1) ),
    inference(spm,[status(thm)],[c_0_58,c_0_59]) ).

cnf(c_0_64,plain,
    ( leqNat(s(X1),s(X2))
    | ~ leqNat(X1,X2) ),
    inference(split_conjunct,[status(thm)],[c_0_60]) ).

cnf(c_0_65,plain,
    ( X1 = X2
    | elemNat(X1,X3)
    | ~ elemNat(X1,cons(X2,X3)) ),
    inference(split_conjunct,[status(thm)],[c_0_61]) ).

cnf(c_0_66,negated_conjecture,
    ( elemNat(X1,cons(z,nil))
    | leqNat(s(s(z)),s(s(s(z)))) ),
    inference(spm,[status(thm)],[c_0_62,c_0_59]) ).

fof(c_0_67,plain,
    ! [X46] : z != s(X46),
    inference(variable_rename,[status(thm)],[axiom_005]) ).

cnf(c_0_68,negated_conjecture,
    ( elemNat(X1,cons(s(X2),cons(s(X3),cons(z,nil))))
    | elemNat(s(X2),cons(s(X3),cons(z,nil)))
    | elemNat(s(X3),cons(z,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ leqNat(s(X2),X1)
    | ~ leqNat(X3,X2) ),
    inference(spm,[status(thm)],[c_0_63,c_0_64]) ).

cnf(c_0_69,negated_conjecture,
    ( X1 = z
    | leqNat(s(s(z)),s(s(s(z)))) ),
    inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_65,c_0_66]),c_0_33]) ).

cnf(c_0_70,plain,
    z != s(X1),
    inference(split_conjunct,[status(thm)],[c_0_67]) ).

cnf(c_0_71,negated_conjecture,
    ( elemNat(s(X1),cons(s(X2),cons(s(X3),cons(z,nil))))
    | elemNat(s(X2),cons(s(X3),cons(z,nil)))
    | elemNat(s(X3),cons(z,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ leqNat(X3,X2)
    | ~ leqNat(X2,X1) ),
    inference(spm,[status(thm)],[c_0_68,c_0_64]) ).

cnf(c_0_72,plain,
    ( leqNat(X1,X2)
    | ~ leqNat(s(X1),s(X2)) ),
    inference(split_conjunct,[status(thm)],[c_0_60]) ).

cnf(c_0_73,negated_conjecture,
    leqNat(s(s(z)),s(s(s(z)))),
    inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_39,c_0_69]),c_0_70]) ).

cnf(c_0_74,negated_conjecture,
    ( elemNat(s(X1),cons(s(X2),cons(s(z),cons(z,nil))))
    | elemNat(s(X2),cons(s(z),cons(z,nil)))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z))))
    | ~ leqNat(X2,X1) ),
    inference(spm,[status(thm)],[c_0_71,c_0_59]) ).

cnf(c_0_75,negated_conjecture,
    leqNat(s(z),s(s(z))),
    inference(spm,[status(thm)],[c_0_72,c_0_73]) ).

cnf(c_0_76,negated_conjecture,
    ( elemNat(s(s(s(z))),cons(s(s(z)),cons(s(z),cons(z,nil))))
    | elemNat(s(s(z)),cons(s(z),cons(z,nil)))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z)))) ),
    inference(spm,[status(thm)],[c_0_74,c_0_75]) ).

cnf(c_0_77,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | elemNat(s(s(s(z))),cons(s(z),cons(z,nil)))
    | elemNat(s(s(z)),cons(s(z),cons(z,nil)))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(s(s(z)))),s(s(s(z)))) ),
    inference(spm,[status(thm)],[c_0_65,c_0_76]) ).

cnf(c_0_78,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | elemNat(s(s(s(z))),cons(s(z),cons(z,nil)))
    | elemNat(s(s(z)),cons(s(z),cons(z,nil)))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(s(z))),s(s(z))) ),
    inference(spm,[status(thm)],[c_0_72,c_0_77]) ).

cnf(c_0_79,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | s(s(s(z))) = s(z)
    | elemNat(s(s(z)),cons(s(z),cons(z,nil)))
    | elemNat(s(s(s(z))),cons(z,nil))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(s(z))),s(s(z))) ),
    inference(spm,[status(thm)],[c_0_65,c_0_78]) ).

cnf(c_0_80,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | s(s(s(z))) = s(z)
    | s(s(z)) = s(z)
    | elemNat(s(s(s(z))),cons(z,nil))
    | elemNat(s(s(z)),cons(z,nil))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(s(z))),s(s(z))) ),
    inference(spm,[status(thm)],[c_0_65,c_0_79]) ).

cnf(c_0_81,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | s(s(s(z))) = s(z)
    | s(s(z)) = s(z)
    | elemNat(s(s(s(z))),cons(z,nil))
    | elemNat(s(s(z)),cons(z,nil))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(z)),s(z)) ),
    inference(spm,[status(thm)],[c_0_72,c_0_80]) ).

fof(c_0_82,plain,
    ! [X4] : ~ leqNat(s(X4),z),
    inference(fof_simplification,[status(thm)],[axiom_007]) ).

cnf(c_0_83,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | s(s(s(z))) = s(z)
    | s(s(z)) = s(z)
    | elemNat(s(s(z)),cons(z,nil))
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(z)),s(z)) ),
    inference(sr,[status(thm)],[inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_65,c_0_81]),c_0_70]),c_0_33]) ).

fof(c_0_84,plain,
    ! [X48] : ~ leqNat(s(X48),z),
    inference(variable_rename,[status(thm)],[c_0_82]) ).

cnf(c_0_85,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | s(s(s(z))) = s(z)
    | s(s(z)) = s(z)
    | elemNat(s(z),cons(z,nil))
    | leqNat(s(s(z)),s(z)) ),
    inference(sr,[status(thm)],[inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_65,c_0_83]),c_0_70]),c_0_33]) ).

cnf(c_0_86,plain,
    ~ leqNat(s(X1),z),
    inference(split_conjunct,[status(thm)],[c_0_84]) ).

fof(c_0_87,plain,
    ! [X45] : proj1S(s(X45)) = X45,
    inference(variable_rename,[status(thm)],[axiom_004]) ).

cnf(c_0_88,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | s(s(s(z))) = s(z)
    | s(s(z)) = s(z)
    | elemNat(s(z),cons(z,nil)) ),
    inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_72,c_0_85]),c_0_86]) ).

cnf(c_0_89,plain,
    proj1S(s(X1)) = X1,
    inference(split_conjunct,[status(thm)],[c_0_87]) ).

cnf(c_0_90,negated_conjecture,
    ( s(s(s(z))) = s(s(z))
    | s(s(s(z))) = s(z)
    | s(s(z)) = s(z) ),
    inference(sr,[status(thm)],[inference(sr,[status(thm)],[inference(spm,[status(thm)],[c_0_65,c_0_88]),c_0_70]),c_0_33]) ).

cnf(c_0_91,negated_conjecture,
    ( s(s(s(z))) = s(z)
    | s(s(z)) = s(z) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_89,c_0_90]),c_0_89])]) ).

cnf(c_0_92,negated_conjecture,
    s(s(z)) = s(z),
    inference(sr,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_89,c_0_91]),c_0_89]),c_0_70]) ).

cnf(c_0_93,negated_conjecture,
    $false,
    inference(sr,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_89,c_0_92]),c_0_89]),c_0_70]),
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem    : SWX203+1 : TPTP v9.3.0. Released v9.3.0.
% 0.00/0.12  % Command    : /export/starexec/sandbox/solver/bin/lemma_parallel_prover %s --lemma-prover /export/starexec/sandbox/solver/bin/cse --final-prover /export/starexec/sandbox/solver/bin/eprover --proof-time %d --global-time-limit %d
% 0.16/0.32  % Computer : n017.cluster.edu
% 0.16/0.32  % Model    : x86_64 x86_64
% 0.16/0.32  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/0.32  % Memory   : 8042.1875MB
% 0.16/0.32  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.16/0.33  % CPULimit   : 300
% 0.16/0.33  % WCLimit    : 300
% 0.16/0.33  % DateTime   : Tue May  5 07:55:12 EDT 2026
% 0.16/0.33  % CPUTime    : 
% 0.16/0.34  % start to proof: theBenchmark
% 2.05/1.94  % Version  : CSE_E---1.7
% 2.05/1.94  % Problem  : theBenchmark.p
% 2.05/1.94  % SZS status Theorem for theBenchmark.p
% 2.05/1.94  % SZS output start CNFRefutation
% See solution above
% 2.05/1.94  % Total time : 1.374s
%------------------------------------------------------------------------------