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%------------------------------------------------------------------------------
% File     : Z3---4.15.1
% Problem  : SYN557-1 : TPTP v9.0.0. Released v2.5.0.
% Transfm  : none
% Format   : tptp
% Command  : run_E %s %d THM

% Computer : n007.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 : Sat Jun 21 05:39:34 AM UTC 2025

% Result   : Unsatisfiable 0.11s 0.37s
% Output   : Proof 0.17s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :   32
% Syntax   : Number of formulae    :   68 (  26 unt;   0 typ;   0 def)
%            Number of atoms       :  276 (   0 equ)
%            Maximal formula atoms :   12 (   4 avg)
%            Number of connectives :  372 ( 175   ~; 170   |;   0   &)
%                                         (  27 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   5 avg)
%            Maximal term depth    :    4 (   2 avg)
%            Number of FOOLs       :   11 (  11 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of predicates  :    6 (   5 usr;   1 prp; 0-3 aty)
%            Number of functors    :    6 (   6 usr;   4 con; 0-2 aty)
%            Number of variables   :  192 ( 178   !;   0   ?; 192   :)

% Comments : 
%------------------------------------------------------------------------------
tff(p2_type,type,
    p2: ( $i * $i ) > $o ).

tff(f3_type,type,
    f3: ( $i * $i ) > $i ).

tff(f5_type,type,
    f5: $i > $i ).

tff(c7_type,type,
    c7: $i ).

tff(c9_type,type,
    c9: $i ).

tff(c8_type,type,
    c8: $i ).

tff(c6_type,type,
    c6: $i ).

tff(1,plain,
    ^ [X0: $i,X2: $i,X1: $i] :
      refl(( ( p2(X0,X1)
          | ~ p2(f3(X0,X2),f3(X1,X2)) )
      <=> ( p2(X0,X1)
          | ~ p2(f3(X0,X2),f3(X1,X2)) ) )),
    inference(bind,[status(th)],[]) ).

tff(2,plain,
    ( ! [X0: $i,X2: $i,X1: $i] :
        ( p2(X0,X1)
        | ~ p2(f3(X0,X2),f3(X1,X2)) )
  <=> ! [X0: $i,X2: $i,X1: $i] :
        ( p2(X0,X1)
        | ~ p2(f3(X0,X2),f3(X1,X2)) ) ),
    inference(quant_intro,[status(thm)],[1]) ).

tff(3,plain,
    ( ! [X0: $i,X2: $i,X1: $i] :
        ( p2(X0,X1)
        | ~ p2(f3(X0,X2),f3(X1,X2)) )
  <=> ! [X0: $i,X2: $i,X1: $i] :
        ( p2(X0,X1)
        | ~ p2(f3(X0,X2),f3(X1,X2)) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(4,axiom,
    ! [X0: $i,X2: $i,X1: $i] :
      ( p2(X0,X1)
      | ~ p2(f3(X0,X2),f3(X1,X2)) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',p2_8) ).

tff(5,plain,
    ! [X0: $i,X2: $i,X1: $i] :
      ( p2(X0,X1)
      | ~ p2(f3(X0,X2),f3(X1,X2)) ),
    inference(modus_ponens,[status(thm)],[4,3]) ).

tff(6,plain,
    ! [X0: $i,X2: $i,X1: $i] :
      ( p2(X0,X1)
      | ~ p2(f3(X0,X2),f3(X1,X2)) ),
    inference(skolemize,[status(sab)],[5]) ).

tff(7,plain,
    ! [X0: $i,X2: $i,X1: $i] :
      ( p2(X0,X1)
      | ~ p2(f3(X0,X2),f3(X1,X2)) ),
    inference(modus_ponens,[status(thm)],[6,2]) ).

tff(8,plain,
    ( ~ p2(c6,f3(c8,f5(c9)))
  <=> ~ p2(c6,f3(c8,f5(c9))) ),
    inference(rewrite,[status(thm)],[]) ).

tff(9,axiom,
    ~ p2(c6,f3(c8,f5(c9))),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',not_p2_3) ).

tff(10,plain,
    ~ p2(c6,f3(c8,f5(c9))),
    inference(modus_ponens,[status(thm)],[9,8]) ).

tff(11,plain,
    ( ( ~ ! [X0: $i,X2: $i,X1: $i] :
            ( p2(X0,X1)
            | ~ p2(f3(X0,X2),f3(X1,X2)) )
      | p2(c6,f3(c8,f5(c9)))
      | ~ p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) )
  <=> ( ~ ! [X0: $i,X2: $i,X1: $i] :
            ( p2(X0,X1)
            | ~ p2(f3(X0,X2),f3(X1,X2)) )
      | p2(c6,f3(c8,f5(c9)))
      | ~ p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(12,plain,
    ( ~ ! [X0: $i,X2: $i,X1: $i] :
          ( p2(X0,X1)
          | ~ p2(f3(X0,X2),f3(X1,X2)) )
    | p2(c6,f3(c8,f5(c9)))
    | ~ p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(13,plain,
    ( ~ ! [X0: $i,X2: $i,X1: $i] :
          ( p2(X0,X1)
          | ~ p2(f3(X0,X2),f3(X1,X2)) )
    | p2(c6,f3(c8,f5(c9)))
    | ~ p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) ),
    inference(modus_ponens,[status(thm)],[12,11]) ).

tff(14,plain,
    ~ p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))),
    inference(unit_resolution,[status(thm)],[13,10,7]) ).

tff(15,plain,
    ^ [X11: $i,X10: $i] :
      refl(( p2(f3(X10,X11),f3(X11,X10))
      <=> p2(f3(X10,X11),f3(X11,X10)) )),
    inference(bind,[status(th)],[]) ).

tff(16,plain,
    ( ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10))
  <=> ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10)) ),
    inference(quant_intro,[status(thm)],[15]) ).

tff(17,plain,
    ( ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10))
  <=> ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10)) ),
    inference(rewrite,[status(thm)],[]) ).

tff(18,axiom,
    ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10)),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',p2_4) ).

tff(19,plain,
    ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10)),
    inference(modus_ponens,[status(thm)],[18,17]) ).

tff(20,plain,
    ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10)),
    inference(skolemize,[status(sab)],[19]) ).

tff(21,plain,
    ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10)),
    inference(modus_ponens,[status(thm)],[20,16]) ).

tff(22,plain,
    ( ~ ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10))
    | p2(f3(f5(c7),f3(c8,f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(23,plain,
    p2(f3(f5(c7),f3(c8,f5(c9))),f3(f3(c8,f5(c9)),f5(c7))),
    inference(unit_resolution,[status(thm)],[22,21]) ).

tff(24,plain,
    ^ [X14: $i,X12: $i,X13: $i] :
      refl(( p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14)))
      <=> p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14))) )),
    inference(bind,[status(th)],[]) ).

tff(25,plain,
    ( ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14)))
  <=> ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14))) ),
    inference(quant_intro,[status(thm)],[24]) ).

tff(26,plain,
    ( ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14)))
  <=> ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14))) ),
    inference(rewrite,[status(thm)],[]) ).

tff(27,axiom,
    ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14))),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',p2_10) ).

tff(28,plain,
    ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14))),
    inference(modus_ponens,[status(thm)],[27,26]) ).

tff(29,plain,
    ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14))),
    inference(skolemize,[status(sab)],[28]) ).

tff(30,plain,
    ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14))),
    inference(modus_ponens,[status(thm)],[29,25]) ).

tff(31,plain,
    ( ~ ! [X14: $i,X12: $i,X13: $i] : p2(f3(X12,f3(X13,X14)),f3(X13,f3(X12,X14)))
    | p2(f3(f5(c7),f3(c8,f5(c9))),f3(c8,f3(f5(c7),f5(c9)))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(32,plain,
    p2(f3(f5(c7),f3(c8,f5(c9))),f3(c8,f3(f5(c7),f5(c9)))),
    inference(unit_resolution,[status(thm)],[31,30]) ).

tff(33,plain,
    ^ [X4: $i,X3: $i,X5: $i] :
      refl(( ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
      <=> ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) ) )),
    inference(bind,[status(th)],[]) ).

tff(34,plain,
    ( ! [X4: $i,X3: $i,X5: $i] :
        ( ~ p2(X3,X5)
        | ~ p2(X3,X4)
        | p2(X4,X5) )
  <=> ! [X4: $i,X3: $i,X5: $i] :
        ( ~ p2(X3,X5)
        | ~ p2(X3,X4)
        | p2(X4,X5) ) ),
    inference(quant_intro,[status(thm)],[33]) ).

tff(35,plain,
    ( ! [X4: $i,X3: $i,X5: $i] :
        ( ~ p2(X3,X5)
        | ~ p2(X3,X4)
        | p2(X4,X5) )
  <=> ! [X4: $i,X3: $i,X5: $i] :
        ( ~ p2(X3,X5)
        | ~ p2(X3,X4)
        | p2(X4,X5) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(36,plain,
    ^ [X4: $i,X3: $i,X5: $i] :
      trans(monotonicity(rewrite(( ( p2(X4,X5)
              | ~ p2(X3,X4) )
          <=> ( ~ p2(X3,X4)
              | p2(X4,X5) ) )),
          ( ( p2(X4,X5)
            | ~ p2(X3,X4)
            | ~ p2(X3,X5) )
        <=> ( ~ p2(X3,X4)
            | p2(X4,X5)
            | ~ p2(X3,X5) ) )),
        rewrite(( ( ~ p2(X3,X4)
            | p2(X4,X5)
            | ~ p2(X3,X5) )
        <=> ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) ) )),
        ( ( p2(X4,X5)
          | ~ p2(X3,X4)
          | ~ p2(X3,X5) )
      <=> ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) ) )),
    inference(bind,[status(th)],[]) ).

tff(37,plain,
    ( ! [X4: $i,X3: $i,X5: $i] :
        ( p2(X4,X5)
        | ~ p2(X3,X4)
        | ~ p2(X3,X5) )
  <=> ! [X4: $i,X3: $i,X5: $i] :
        ( ~ p2(X3,X5)
        | ~ p2(X3,X4)
        | p2(X4,X5) ) ),
    inference(quant_intro,[status(thm)],[36]) ).

tff(38,axiom,
    ! [X4: $i,X3: $i,X5: $i] :
      ( p2(X4,X5)
      | ~ p2(X3,X4)
      | ~ p2(X3,X5) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',p2_6) ).

tff(39,plain,
    ! [X4: $i,X3: $i,X5: $i] :
      ( ~ p2(X3,X5)
      | ~ p2(X3,X4)
      | p2(X4,X5) ),
    inference(modus_ponens,[status(thm)],[38,37]) ).

tff(40,plain,
    ! [X4: $i,X3: $i,X5: $i] :
      ( ~ p2(X3,X5)
      | ~ p2(X3,X4)
      | p2(X4,X5) ),
    inference(modus_ponens,[status(thm)],[39,35]) ).

tff(41,plain,
    ! [X4: $i,X3: $i,X5: $i] :
      ( ~ p2(X3,X5)
      | ~ p2(X3,X4)
      | p2(X4,X5) ),
    inference(skolemize,[status(sab)],[40]) ).

tff(42,plain,
    ! [X4: $i,X3: $i,X5: $i] :
      ( ~ p2(X3,X5)
      | ~ p2(X3,X4)
      | p2(X4,X5) ),
    inference(modus_ponens,[status(thm)],[41,34]) ).

tff(43,plain,
    ( ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(c8,f3(f5(c7),f5(c9))))
      | p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) )
  <=> ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(c8,f3(f5(c7),f5(c9))))
      | p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(44,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
    | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(c8,f3(f5(c7),f5(c9))))
    | p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(45,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
    | ~ p2(f3(f5(c7),f3(c8,f5(c9))),f3(c8,f3(f5(c7),f5(c9))))
    | p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ),
    inference(modus_ponens,[status(thm)],[44,43]) ).

tff(46,plain,
    p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))),
    inference(unit_resolution,[status(thm)],[45,42,32,23]) ).

tff(47,plain,
    ( ~ ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10))
    | p2(f3(c6,f5(c7)),f3(f5(c7),c6)) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(48,plain,
    p2(f3(c6,f5(c7)),f3(f5(c7),c6)),
    inference(unit_resolution,[status(thm)],[47,21]) ).

tff(49,plain,
    ( p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9))))
  <=> p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9)))) ),
    inference(rewrite,[status(thm)],[]) ).

tff(50,axiom,
    p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9)))),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',p2_12) ).

tff(51,plain,
    p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9)))),
    inference(modus_ponens,[status(thm)],[50,49]) ).

tff(52,plain,
    ( ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9))))
      | ~ p2(f3(c6,f5(c7)),f3(f5(c7),c6))
      | p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9)))) )
  <=> ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9))))
      | ~ p2(f3(c6,f5(c7)),f3(f5(c7),c6))
      | p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9)))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(53,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | ~ p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9))))
    | ~ p2(f3(c6,f5(c7)),f3(f5(c7),c6))
    | p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9)))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(54,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | ~ p2(f3(c6,f5(c7)),f3(c8,f3(f5(c7),f5(c9))))
    | ~ p2(f3(c6,f5(c7)),f3(f5(c7),c6))
    | p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9)))) ),
    inference(modus_ponens,[status(thm)],[53,52]) ).

tff(55,plain,
    p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9)))),
    inference(unit_resolution,[status(thm)],[54,42,51,48]) ).

tff(56,plain,
    ( ~ ! [X11: $i,X10: $i] : p2(f3(X10,X11),f3(X11,X10))
    | p2(f3(f5(c7),c6),f3(c6,f5(c7))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(57,plain,
    p2(f3(f5(c7),c6),f3(c6,f5(c7))),
    inference(unit_resolution,[status(thm)],[56,21]) ).

tff(58,plain,
    ( ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(f5(c7),c6),f3(c6,f5(c7)))
      | ~ p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9))))
      | p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7))) )
  <=> ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(f5(c7),c6),f3(c6,f5(c7)))
      | ~ p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9))))
      | p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(59,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | ~ p2(f3(f5(c7),c6),f3(c6,f5(c7)))
    | ~ p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9))))
    | p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(60,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | ~ p2(f3(f5(c7),c6),f3(c6,f5(c7)))
    | ~ p2(f3(f5(c7),c6),f3(c8,f3(f5(c7),f5(c9))))
    | p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7))) ),
    inference(modus_ponens,[status(thm)],[59,58]) ).

tff(61,plain,
    p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7))),
    inference(unit_resolution,[status(thm)],[60,42,57,55]) ).

tff(62,plain,
    ( ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) )
  <=> ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(63,plain,
    ( ( ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) )
  <=> ( p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ) ),
    inference(rewrite,[status(thm)],[]) ).

tff(64,plain,
    ( ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) )
  <=> ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ) ),
    inference(monotonicity,[status(thm)],[63]) ).

tff(65,plain,
    ( ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) )
  <=> ( ~ ! [X4: $i,X3: $i,X5: $i] :
            ( ~ p2(X3,X5)
            | ~ p2(X3,X4)
            | p2(X4,X5) )
      | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
      | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ) ),
    inference(transitivity,[status(thm)],[64,62]) ).

tff(66,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7)))
    | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
    | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7))) ),
    inference(quant_inst,[status(thm)],[]) ).

tff(67,plain,
    ( ~ ! [X4: $i,X3: $i,X5: $i] :
          ( ~ p2(X3,X5)
          | ~ p2(X3,X4)
          | p2(X4,X5) )
    | p2(f3(c6,f5(c7)),f3(f3(c8,f5(c9)),f5(c7)))
    | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(c6,f5(c7)))
    | ~ p2(f3(c8,f3(f5(c7),f5(c9))),f3(f3(c8,f5(c9)),f5(c7))) ),
    inference(modus_ponens,[status(thm)],[66,65]) ).

tff(68,plain,
    $false,
    inference(unit_resolution,[status(thm)],[67,42,61,46,14]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.11  % Problem    : SYN557-1 : TPTP v9.0.0. Released v2.5.0.
% 0.07/0.11  % Command    : run_E %s %d THM
% 0.11/0.32  % Computer : n007.cluster.edu
% 0.11/0.32  % Model    : x86_64 x86_64
% 0.11/0.32  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/0.32  % Memory   : 8042.1875MB
% 0.11/0.32  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.11/0.32  % CPULimit   : 300
% 0.11/0.32  % WCLimit    : 300
% 0.11/0.32  % DateTime   : Fri Jun 20 12:40:20 EDT 2025
% 0.11/0.32  % CPUTime    : 
% 0.11/0.37  % SZS status Unsatisfiable
% 0.11/0.37  % SZS output start Proof
% See solution above
% 0.17/0.38  % E exiting
%------------------------------------------------------------------------------