TSTP Solution File: GEG025_1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : GEG025_1 : TPTP v8.1.0. Bugfixed v5.2.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n021.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 : Fri Sep 16 14:58:51 EDT 2022

% Result   : Theorem 0.19s 0.39s
% Output   : Proof 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   14
%            Number of leaves      :   39
% Syntax   : Number of formulae    :   91 (  36 unt;   9 typ;   0 def)
%            Number of atoms       :  320 ( 150 equ)
%            Maximal formula atoms :   48 (   3 avg)
%            Number of connectives :  300 (  91   ~;  41   |; 129   &)
%                                         (  37 <=>;   2  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   26 (   4 avg)
%            Maximal term depth    :    5 (   2 avg)
%            Number of FOOLs       :   29 (  29 fml;   0 var)
%            Number arithmetic     :  691 ( 150 atm; 190 fun; 351 num;   0 var)
%            Number of types       :    1 (   0 usr;   1 ari)
%            Number of type conns  :    3 (   2   >;   1   *;   0   +;   0  <<)
%            Number of predicates  :   10 (   5 usr;   2 prp; 0-3 aty)
%            Number of functors    :   33 (   9 usr;  29 con; 0-2 aty)
%            Number of variables   :  172 ( 137   !;  17   ?; 172   :)

% Comments : 
%------------------------------------------------------------------------------
tff(d_type,type,
    d: ( city * city ) > $int ).

tff(berlin_type,type,
    berlin: city ).

tff(saarbruecken_type,type,
    saarbruecken: city ).

tff(frankfurt_type,type,
    frankfurt: city ).

tff(inh_type,type,
    inh: city > $int ).

tff(kiel_type,type,
    kiel: city ).

tff(cologne_type,type,
    cologne: city ).

tff(munich_type,type,
    munich: city ).

tff(hamburg_type,type,
    hamburg: city ).

tff(1,plain,
    ^ [X: city,Y: city,Z: city] :
      refl(
        ( $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
      <=> $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0) )),
    inference(bind,[status(th)],]) ).

tff(2,plain,
    ( ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
  <=> ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0) ),
    inference(quant_intro,[status(thm)],[1]) ).

tff(3,plain,
    ^ [X: city,Y: city,Z: city] :
      trans(
        monotonicity(rewrite($sum(d(X,Z),$sum($product(-1,d(X,Y)),$product(-1,d(Y,Z)))) = $sum($product(-1,d(Y,Z)),$sum($product(-1,d(X,Y)),d(X,Z)))),
          ( $lesseq($sum(d(X,Z),$sum($product(-1,d(X,Y)),$product(-1,d(Y,Z)))),0)
        <=> $lesseq($sum($product(-1,d(Y,Z)),$sum($product(-1,d(X,Y)),d(X,Z))),0) )),
        rewrite(
          ( $lesseq($sum($product(-1,d(Y,Z)),$sum($product(-1,d(X,Y)),d(X,Z))),0)
        <=> $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0) )),
        ( $lesseq($sum(d(X,Z),$sum($product(-1,d(X,Y)),$product(-1,d(Y,Z)))),0)
      <=> $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0) )),
    inference(bind,[status(th)],]) ).

tff(4,plain,
    ( ! [X: city,Y: city,Z: city] : $lesseq($sum(d(X,Z),$sum($product(-1,d(X,Y)),$product(-1,d(Y,Z)))),0)
  <=> ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0) ),
    inference(quant_intro,[status(thm)],[3]) ).

tff(5,plain,
    ^ [X: city,Y: city,Z: city] :
      rewrite(
        ( $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
      <=> $lesseq($sum(d(X,Z),$sum($product(-1,d(X,Y)),$product(-1,d(Y,Z)))),0) )),
    inference(bind,[status(th)],]) ).

tff(6,plain,
    ( ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
  <=> ! [X: city,Y: city,Z: city] : $lesseq($sum(d(X,Z),$sum($product(-1,d(X,Y)),$product(-1,d(Y,Z)))),0) ),
    inference(quant_intro,[status(thm)],[5]) ).

tff(7,plain,
    ( ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
  <=> ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z))) ),
    inference(rewrite,[status(thm)],]) ).

tff(8,plain,
    ( ~ ( ( ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) )
          & ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
          & ! [X: city] : ( d(X,X) = 0 )
          & ( d(berlin,munich) = 510 )
          & ( d(berlin,cologne) = 480 )
          & ( d(berlin,frankfurt) = 420 )
          & ( d(saarbruecken,frankfurt) = 160 )
          & ( d(saarbruecken,cologne) = 190 )
          & ( d(hamburg,cologne) = 360 )
          & ( d(hamburg,frankfurt) = 390 )
          & ( d(cologne,frankfurt) = 150 )
          & ( d(hamburg,kiel) = 90 )
          & ( d(hamburg,berlin) = 250 )
          & ( d(munich,frankfurt) = 300 )
          & ( d(munich,saarbruecken) = 360 )
          & ( inh(berlin) = 3442675 )
          & ( inh(hamburg) = 1774224 )
          & ( inh(munich) = 1330440 )
          & ( inh(cologne) = 998105 )
          & ( inh(frankfurt) = 671927 )
          & ( inh(saarbruecken) = 175810 )
          & ( inh(kiel) = 238281 ) )
       => ? [X: city] :
            ( $lesseq(d(saarbruecken,X),600)
            & $lesseq(3000000,inh(X)) ) )
  <=> ~ ( ~ ( ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) )
            & ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
            & ! [X: city] : ( d(X,X) = 0 )
            & ( d(berlin,munich) = 510 )
            & ( d(berlin,cologne) = 480 )
            & ( d(berlin,frankfurt) = 420 )
            & ( d(saarbruecken,frankfurt) = 160 )
            & ( d(saarbruecken,cologne) = 190 )
            & ( d(hamburg,cologne) = 360 )
            & ( d(hamburg,frankfurt) = 390 )
            & ( d(cologne,frankfurt) = 150 )
            & ( d(hamburg,kiel) = 90 )
            & ( d(hamburg,berlin) = 250 )
            & ( d(munich,frankfurt) = 300 )
            & ( d(munich,saarbruecken) = 360 )
            & ( inh(berlin) = 3442675 )
            & ( inh(hamburg) = 1774224 )
            & ( inh(munich) = 1330440 )
            & ( inh(cologne) = 998105 )
            & ( inh(frankfurt) = 671927 )
            & ( inh(saarbruecken) = 175810 )
            & ( inh(kiel) = 238281 ) )
        | ? [X: city] :
            ( $lesseq(d(saarbruecken,X),600)
            & $lesseq(3000000,inh(X)) ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(9,axiom,
    ~ ( ( ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) )
        & ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
        & ! [X: city] : ( d(X,X) = 0 )
        & ( d(berlin,munich) = 510 )
        & ( d(berlin,cologne) = 480 )
        & ( d(berlin,frankfurt) = 420 )
        & ( d(saarbruecken,frankfurt) = 160 )
        & ( d(saarbruecken,cologne) = 190 )
        & ( d(hamburg,cologne) = 360 )
        & ( d(hamburg,frankfurt) = 390 )
        & ( d(cologne,frankfurt) = 150 )
        & ( d(hamburg,kiel) = 90 )
        & ( d(hamburg,berlin) = 250 )
        & ( d(munich,frankfurt) = 300 )
        & ( d(munich,saarbruecken) = 360 )
        & ( inh(berlin) = 3442675 )
        & ( inh(hamburg) = 1774224 )
        & ( inh(munich) = 1330440 )
        & ( inh(cologne) = 998105 )
        & ( inh(frankfurt) = 671927 )
        & ( inh(saarbruecken) = 175810 )
        & ( inh(kiel) = 238281 ) )
     => ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $lesseq(3000000,inh(X)) ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',exists_big_city_distance_2) ).

tff(10,plain,
    ~ ( ~ ( ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) )
          & ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
          & ! [X: city] : ( d(X,X) = 0 )
          & ( d(berlin,munich) = 510 )
          & ( d(berlin,cologne) = 480 )
          & ( d(berlin,frankfurt) = 420 )
          & ( d(saarbruecken,frankfurt) = 160 )
          & ( d(saarbruecken,cologne) = 190 )
          & ( d(hamburg,cologne) = 360 )
          & ( d(hamburg,frankfurt) = 390 )
          & ( d(cologne,frankfurt) = 150 )
          & ( d(hamburg,kiel) = 90 )
          & ( d(hamburg,berlin) = 250 )
          & ( d(munich,frankfurt) = 300 )
          & ( d(munich,saarbruecken) = 360 )
          & ( inh(berlin) = 3442675 )
          & ( inh(hamburg) = 1774224 )
          & ( inh(munich) = 1330440 )
          & ( inh(cologne) = 998105 )
          & ( inh(frankfurt) = 671927 )
          & ( inh(saarbruecken) = 175810 )
          & ( inh(kiel) = 238281 ) )
      | ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $lesseq(3000000,inh(X)) ) ),
    inference(modus_ponens,[status(thm)],[9,8]) ).

tff(11,plain,
    ( ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) )
    & ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z)))
    & ! [X: city] : ( d(X,X) = 0 )
    & ( d(berlin,munich) = 510 )
    & ( d(berlin,cologne) = 480 )
    & ( d(berlin,frankfurt) = 420 )
    & ( d(saarbruecken,frankfurt) = 160 )
    & ( d(saarbruecken,cologne) = 190 )
    & ( d(hamburg,cologne) = 360 )
    & ( d(hamburg,frankfurt) = 390 )
    & ( d(cologne,frankfurt) = 150 )
    & ( d(hamburg,kiel) = 90 )
    & ( d(hamburg,berlin) = 250 )
    & ( d(munich,frankfurt) = 300 )
    & ( d(munich,saarbruecken) = 360 )
    & ( inh(berlin) = 3442675 )
    & ( inh(hamburg) = 1774224 )
    & ( inh(munich) = 1330440 )
    & ( inh(cologne) = 998105 )
    & ( inh(frankfurt) = 671927 )
    & ( inh(saarbruecken) = 175810 )
    & ( inh(kiel) = 238281 ) ),
    inference(or_elim,[status(thm)],[10]) ).

tff(12,plain,
    ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z))),
    inference(and_elim,[status(thm)],[11]) ).

tff(13,plain,
    ! [X: city,Y: city,Z: city] : $lesseq(d(X,Z),$sum(d(X,Y),d(Y,Z))),
    inference(modus_ponens,[status(thm)],[12,7]) ).

tff(14,plain,
    ! [X: city,Y: city,Z: city] : $lesseq($sum(d(X,Z),$sum($product(-1,d(X,Y)),$product(-1,d(Y,Z)))),0),
    inference(modus_ponens,[status(thm)],[13,6]) ).

tff(15,plain,
    ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0),
    inference(modus_ponens,[status(thm)],[14,4]) ).

tff(16,plain,
    ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0),
    inference(skolemize,[status(sab)],[15]) ).

tff(17,plain,
    ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0),
    inference(modus_ponens,[status(thm)],[16,2]) ).

tff(18,plain,
    ( ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
      | $greatereq($sum(d(saarbruecken,frankfurt),$sum(d(frankfurt,berlin),$product(-1,d(saarbruecken,berlin)))),0) )
  <=> ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
      | $greatereq($sum(d(saarbruecken,frankfurt),$sum(d(frankfurt,berlin),$product(-1,d(saarbruecken,berlin)))),0) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(19,plain,
    ( $greatereq($sum(d(frankfurt,berlin),$sum(d(saarbruecken,frankfurt),$product(-1,d(saarbruecken,berlin)))),0)
  <=> $greatereq($sum(d(saarbruecken,frankfurt),$sum(d(frankfurt,berlin),$product(-1,d(saarbruecken,berlin)))),0) ),
    inference(rewrite,[status(thm)],]) ).

tff(20,plain,
    ( ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
      | $greatereq($sum(d(frankfurt,berlin),$sum(d(saarbruecken,frankfurt),$product(-1,d(saarbruecken,berlin)))),0) )
  <=> ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
      | $greatereq($sum(d(saarbruecken,frankfurt),$sum(d(frankfurt,berlin),$product(-1,d(saarbruecken,berlin)))),0) ) ),
    inference(monotonicity,[status(thm)],[19]) ).

tff(21,plain,
    ( ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
      | $greatereq($sum(d(frankfurt,berlin),$sum(d(saarbruecken,frankfurt),$product(-1,d(saarbruecken,berlin)))),0) )
  <=> ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
      | $greatereq($sum(d(saarbruecken,frankfurt),$sum(d(frankfurt,berlin),$product(-1,d(saarbruecken,berlin)))),0) ) ),
    inference(transitivity,[status(thm)],[20,18]) ).

tff(22,plain,
    ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
    | $greatereq($sum(d(frankfurt,berlin),$sum(d(saarbruecken,frankfurt),$product(-1,d(saarbruecken,berlin)))),0) ),
    inference(quant_inst,[status(thm)],]) ).

tff(23,plain,
    ( ~ ! [X: city,Y: city,Z: city] : $greatereq($sum(d(Y,Z),$sum(d(X,Y),$product(-1,d(X,Z)))),0)
    | $greatereq($sum(d(saarbruecken,frankfurt),$sum(d(frankfurt,berlin),$product(-1,d(saarbruecken,berlin)))),0) ),
    inference(modus_ponens,[status(thm)],[22,21]) ).

tff(24,plain,
    $greatereq($sum(d(saarbruecken,frankfurt),$sum(d(frankfurt,berlin),$product(-1,d(saarbruecken,berlin)))),0),
    inference(unit_resolution,[status(thm)],[23,17]) ).

tff(25,plain,
    ^ [X: city,Y: city] :
      refl(
        ( ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 )
      <=> ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ) )),
    inference(bind,[status(th)],]) ).

tff(26,plain,
    ( ! [X: city,Y: city] : ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 )
  <=> ! [X: city,Y: city] : ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ) ),
    inference(quant_intro,[status(thm)],[25]) ).

tff(27,plain,
    ^ [X: city,Y: city] :
      trans(
        monotonicity(rewrite($sum(d(X,Y),$product(-1,d(Y,X))) = $sum($product(-1,d(Y,X)),d(X,Y))),
          ( ( $sum(d(X,Y),$product(-1,d(Y,X))) = 0 )
        <=> ( $sum($product(-1,d(Y,X)),d(X,Y)) = 0 ) )),
        rewrite(
          ( ( $sum($product(-1,d(Y,X)),d(X,Y)) = 0 )
        <=> ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ) )),
        ( ( $sum(d(X,Y),$product(-1,d(Y,X))) = 0 )
      <=> ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ) )),
    inference(bind,[status(th)],]) ).

tff(28,plain,
    ( ! [X: city,Y: city] : ( $sum(d(X,Y),$product(-1,d(Y,X))) = 0 )
  <=> ! [X: city,Y: city] : ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ) ),
    inference(quant_intro,[status(thm)],[27]) ).

tff(29,plain,
    ^ [X: city,Y: city] :
      rewrite(
        ( ( d(X,Y) = d(Y,X) )
      <=> ( $sum(d(X,Y),$product(-1,d(Y,X))) = 0 ) )),
    inference(bind,[status(th)],]) ).

tff(30,plain,
    ( ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) )
  <=> ! [X: city,Y: city] : ( $sum(d(X,Y),$product(-1,d(Y,X))) = 0 ) ),
    inference(quant_intro,[status(thm)],[29]) ).

tff(31,plain,
    ( ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) )
  <=> ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(32,plain,
    ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) ),
    inference(and_elim,[status(thm)],[11]) ).

tff(33,plain,
    ! [X: city,Y: city] : ( d(X,Y) = d(Y,X) ),
    inference(modus_ponens,[status(thm)],[32,31]) ).

tff(34,plain,
    ! [X: city,Y: city] : ( $sum(d(X,Y),$product(-1,d(Y,X))) = 0 ),
    inference(modus_ponens,[status(thm)],[33,30]) ).

tff(35,plain,
    ! [X: city,Y: city] : ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ),
    inference(modus_ponens,[status(thm)],[34,28]) ).

tff(36,plain,
    ! [X: city,Y: city] : ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ),
    inference(skolemize,[status(sab)],[35]) ).

tff(37,plain,
    ! [X: city,Y: city] : ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 ),
    inference(modus_ponens,[status(thm)],[36,26]) ).

tff(38,plain,
    ( ~ ! [X: city,Y: city] : ( $sum(d(Y,X),$product(-1,d(X,Y))) = 0 )
    | ( $sum(d(berlin,frankfurt),$product(-1,d(frankfurt,berlin))) = 0 ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(39,plain,
    $sum(d(berlin,frankfurt),$product(-1,d(frankfurt,berlin))) = 0,
    inference(unit_resolution,[status(thm)],[38,37]) ).

tff(40,plain,
    ( ( $sum(d(berlin,frankfurt),$product(-1,d(frankfurt,berlin))) != 0 )
    | $greatereq($sum(d(berlin,frankfurt),$product(-1,d(frankfurt,berlin))),0) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(41,plain,
    $greatereq($sum(d(berlin,frankfurt),$product(-1,d(frankfurt,berlin))),0),
    inference(unit_resolution,[status(thm)],[40,39]) ).

tff(42,plain,
    ( ( d(berlin,frankfurt) = 420 )
  <=> ( d(berlin,frankfurt) = 420 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(43,plain,
    d(berlin,frankfurt) = 420,
    inference(and_elim,[status(thm)],[11]) ).

tff(44,plain,
    d(berlin,frankfurt) = 420,
    inference(modus_ponens,[status(thm)],[43,42]) ).

tff(45,plain,
    ( ( d(berlin,frankfurt) != 420 )
    | $lesseq(d(berlin,frankfurt),420) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(46,plain,
    $lesseq(d(berlin,frankfurt),420),
    inference(unit_resolution,[status(thm)],[45,44]) ).

tff(47,plain,
    ( ( inh(berlin) = 3442675 )
  <=> ( inh(berlin) = 3442675 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(48,plain,
    inh(berlin) = 3442675,
    inference(and_elim,[status(thm)],[11]) ).

tff(49,plain,
    inh(berlin) = 3442675,
    inference(modus_ponens,[status(thm)],[48,47]) ).

tff(50,plain,
    ( ( inh(berlin) != 3442675 )
    | $greatereq(inh(berlin),3442675) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(51,plain,
    $greatereq(inh(berlin),3442675),
    inference(unit_resolution,[status(thm)],[50,49]) ).

tff(52,plain,
    ( ~ $greatereq(inh(berlin),3442675)
    | $greatereq(inh(berlin),3000000) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(53,plain,
    $greatereq(inh(berlin),3000000),
    inference(unit_resolution,[status(thm)],[52,51]) ).

tff(54,plain,
    ^ [X: city] :
      refl(
        ( ( ~ $lesseq(d(saarbruecken,X),600)
          | ~ $greatereq(inh(X),3000000) )
      <=> ( ~ $lesseq(d(saarbruecken,X),600)
          | ~ $greatereq(inh(X),3000000) ) )),
    inference(bind,[status(th)],]) ).

tff(55,plain,
    ( ! [X: city] :
        ( ~ $lesseq(d(saarbruecken,X),600)
        | ~ $greatereq(inh(X),3000000) )
  <=> ! [X: city] :
        ( ~ $lesseq(d(saarbruecken,X),600)
        | ~ $greatereq(inh(X),3000000) ) ),
    inference(quant_intro,[status(thm)],[54]) ).

tff(56,plain,
    ^ [X: city] :
      trans(
        monotonicity(
          rewrite(
            ( ( $lesseq(d(saarbruecken,X),600)
              & $greatereq(inh(X),3000000) )
          <=> ~ ( ~ $lesseq(d(saarbruecken,X),600)
                | ~ $greatereq(inh(X),3000000) ) )),
          ( ~ ( $lesseq(d(saarbruecken,X),600)
              & $greatereq(inh(X),3000000) )
        <=> ~ ~ ( ~ $lesseq(d(saarbruecken,X),600)
                | ~ $greatereq(inh(X),3000000) ) )),
        rewrite(
          ( ~ ~ ( ~ $lesseq(d(saarbruecken,X),600)
                | ~ $greatereq(inh(X),3000000) )
        <=> ( ~ $lesseq(d(saarbruecken,X),600)
            | ~ $greatereq(inh(X),3000000) ) )),
        ( ~ ( $lesseq(d(saarbruecken,X),600)
            & $greatereq(inh(X),3000000) )
      <=> ( ~ $lesseq(d(saarbruecken,X),600)
          | ~ $greatereq(inh(X),3000000) ) )),
    inference(bind,[status(th)],]) ).

tff(57,plain,
    ( ! [X: city] :
        ~ ( $lesseq(d(saarbruecken,X),600)
          & $greatereq(inh(X),3000000) )
  <=> ! [X: city] :
        ( ~ $lesseq(d(saarbruecken,X),600)
        | ~ $greatereq(inh(X),3000000) ) ),
    inference(quant_intro,[status(thm)],[56]) ).

tff(58,plain,
    ( ~ ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $greatereq(inh(X),3000000) )
  <=> ~ ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $greatereq(inh(X),3000000) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(59,plain,
    ( ~ ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $lesseq(3000000,inh(X)) )
  <=> ~ ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $greatereq(inh(X),3000000) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(60,plain,
    ( ~ ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $lesseq(3000000,inh(X)) )
  <=> ~ ? [X: city] :
          ( $lesseq(d(saarbruecken,X),600)
          & $lesseq(3000000,inh(X)) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(61,plain,
    ~ ? [X: city] :
        ( $lesseq(d(saarbruecken,X),600)
        & $lesseq(3000000,inh(X)) ),
    inference(or_elim,[status(thm)],[10]) ).

tff(62,plain,
    ~ ? [X: city] :
        ( $lesseq(d(saarbruecken,X),600)
        & $lesseq(3000000,inh(X)) ),
    inference(modus_ponens,[status(thm)],[61,60]) ).

tff(63,plain,
    ~ ? [X: city] :
        ( $lesseq(d(saarbruecken,X),600)
        & $lesseq(3000000,inh(X)) ),
    inference(modus_ponens,[status(thm)],[62,60]) ).

tff(64,plain,
    ~ ? [X: city] :
        ( $lesseq(d(saarbruecken,X),600)
        & $lesseq(3000000,inh(X)) ),
    inference(modus_ponens,[status(thm)],[63,60]) ).

tff(65,plain,
    ~ ? [X: city] :
        ( $lesseq(d(saarbruecken,X),600)
        & $greatereq(inh(X),3000000) ),
    inference(modus_ponens,[status(thm)],[64,59]) ).

tff(66,plain,
    ~ ? [X: city] :
        ( $lesseq(d(saarbruecken,X),600)
        & $greatereq(inh(X),3000000) ),
    inference(modus_ponens,[status(thm)],[65,58]) ).

tff(67,plain,
    ~ ? [X: city] :
        ( $lesseq(d(saarbruecken,X),600)
        & $greatereq(inh(X),3000000) ),
    inference(modus_ponens,[status(thm)],[66,58]) ).

tff(68,plain,
    ^ [X: city] :
      refl(
        $oeq(
          ~ ( $lesseq(d(saarbruecken,X),600)
            & $greatereq(inh(X),3000000) ),
          ~ ( $lesseq(d(saarbruecken,X),600)
            & $greatereq(inh(X),3000000) ))),
    inference(bind,[status(th)],]) ).

tff(69,plain,
    ! [X: city] :
      ~ ( $lesseq(d(saarbruecken,X),600)
        & $greatereq(inh(X),3000000) ),
    inference(nnf-neg,[status(sab)],[67,68]) ).

tff(70,plain,
    ! [X: city] :
      ( ~ $lesseq(d(saarbruecken,X),600)
      | ~ $greatereq(inh(X),3000000) ),
    inference(modus_ponens,[status(thm)],[69,57]) ).

tff(71,plain,
    ! [X: city] :
      ( ~ $lesseq(d(saarbruecken,X),600)
      | ~ $greatereq(inh(X),3000000) ),
    inference(modus_ponens,[status(thm)],[70,55]) ).

tff(72,plain,
    ( ( ~ ! [X: city] :
            ( ~ $lesseq(d(saarbruecken,X),600)
            | ~ $greatereq(inh(X),3000000) )
      | ~ $lesseq(d(saarbruecken,berlin),600)
      | ~ $greatereq(inh(berlin),3000000) )
  <=> ( ~ ! [X: city] :
            ( ~ $lesseq(d(saarbruecken,X),600)
            | ~ $greatereq(inh(X),3000000) )
      | ~ $lesseq(d(saarbruecken,berlin),600)
      | ~ $greatereq(inh(berlin),3000000) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(73,plain,
    ( ~ ! [X: city] :
          ( ~ $lesseq(d(saarbruecken,X),600)
          | ~ $greatereq(inh(X),3000000) )
    | ~ $lesseq(d(saarbruecken,berlin),600)
    | ~ $greatereq(inh(berlin),3000000) ),
    inference(quant_inst,[status(thm)],]) ).

tff(74,plain,
    ( ~ ! [X: city] :
          ( ~ $lesseq(d(saarbruecken,X),600)
          | ~ $greatereq(inh(X),3000000) )
    | ~ $lesseq(d(saarbruecken,berlin),600)
    | ~ $greatereq(inh(berlin),3000000) ),
    inference(modus_ponens,[status(thm)],[73,72]) ).

tff(75,plain,
    ( ~ $lesseq(d(saarbruecken,berlin),600)
    | ~ $greatereq(inh(berlin),3000000) ),
    inference(unit_resolution,[status(thm)],[74,71]) ).

tff(76,plain,
    ~ $lesseq(d(saarbruecken,berlin),600),
    inference(unit_resolution,[status(thm)],[75,53]) ).

tff(77,plain,
    ( ( d(saarbruecken,frankfurt) = 160 )
  <=> ( d(saarbruecken,frankfurt) = 160 ) ),
    inference(rewrite,[status(thm)],]) ).

tff(78,plain,
    d(saarbruecken,frankfurt) = 160,
    inference(and_elim,[status(thm)],[11]) ).

tff(79,plain,
    d(saarbruecken,frankfurt) = 160,
    inference(modus_ponens,[status(thm)],[78,77]) ).

tff(80,plain,
    ( ( d(saarbruecken,frankfurt) != 160 )
    | $lesseq(d(saarbruecken,frankfurt),160) ),
    inference(theory_lemma,[status(thm)],]) ).

tff(81,plain,
    $lesseq(d(saarbruecken,frankfurt),160),
    inference(unit_resolution,[status(thm)],[80,79]) ).

tff(82,plain,
    $false,
    inference(theory_lemma,[status(thm)],[81,76,46,41,24]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : GEG025_1 : TPTP v8.1.0. Bugfixed v5.2.0.
% 0.07/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.12/0.33  % Computer : n021.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  : 300
% 0.12/0.33  % DateTime : Wed Aug 31 04:22:11 EDT 2022
% 0.12/0.33  % CPUTime  : 
% 0.12/0.34  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.12/0.34  Usage: tptp [options] [-file:]file
% 0.12/0.34    -h, -?       prints this message.
% 0.12/0.34    -smt2        print SMT-LIB2 benchmark.
% 0.12/0.34    -m, -model   generate model.
% 0.12/0.34    -p, -proof   generate proof.
% 0.12/0.34    -c, -core    generate unsat core of named formulas.
% 0.12/0.34    -st, -statistics display statistics.
% 0.12/0.34    -t:timeout   set timeout (in second).
% 0.12/0.34    -smt2status  display status in smt2 format instead of SZS.
% 0.12/0.34    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.12/0.34    -<param>:<value> configuration parameter and value.
% 0.12/0.34    -o:<output-file> file to place output in.
% 0.19/0.39  % SZS status Theorem
% 0.19/0.39  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------