TSTP Solution File: COM001_1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : COM001_1 : TPTP v8.1.0. Released v5.0.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n028.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 Sep  6 18:05:40 EDT 2022

% Result   : Theorem 0.19s 0.39s
% Output   : Proof 0.19s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :   37
% Syntax   : Number of formulae    :   70 (  18 unt;   8 typ;   0 def)
%            Number of atoms       :  332 (   0 equ)
%            Maximal formula atoms :   12 (   5 avg)
%            Number of connectives :  425 ( 186   ~; 158   |;  32   &)
%                                         (  40 <=>;   9  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   5 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of FOOLs       :   31 (  31 fml;   0 var)
%            Number of types       :    1 (   0 usr)
%            Number of type conns  :    9 (   5   >;   4   *;   0   +;   0  <<)
%            Number of predicates  :   12 (  11 usr;   4 prp; 0-3 aty)
%            Number of functors    :    4 (   4 usr;   3 con; 0-1 aty)
%            Number of variables   :  169 ( 150   !;   0   ?; 169   :)

% Comments : 
%------------------------------------------------------------------------------
tff(succeeds_type,type,
    succeeds: ( state * state ) > $o ).

tff(p8_type,type,
    p8: state ).

tff(p3_type,type,
    p3: state ).

tff(has_type,type,
    has: ( state * statement ) > $o ).

tff(goto_type,type,
    goto: label > statement ).

tff(loop_type,type,
    loop: label ).

tff(labels_type,type,
    labels: ( label * state ) > $o ).

tff(follows_type,type,
    follows: ( state * state ) > $o ).

tff(1,plain,
    ( has(p8,goto(loop))
  <=> has(p8,goto(loop)) ),
    inference(rewrite,[status(thm)],]) ).

tff(2,axiom,
    has(p8,goto(loop)),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',state_8) ).

tff(3,plain,
    has(p8,goto(loop)),
    inference(modus_ponens,[status(thm)],[2,1]) ).

tff(4,plain,
    ( labels(loop,p3)
  <=> labels(loop,p3) ),
    inference(rewrite,[status(thm)],]) ).

tff(5,axiom,
    labels(loop,p3),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',label_state_3) ).

tff(6,plain,
    labels(loop,p3),
    inference(modus_ponens,[status(thm)],[5,4]) ).

tff(7,plain,
    ^ [Goal_state: state,Label: label,Start_state: state] :
      refl(
        ( ( succeeds(Goal_state,Start_state)
          | ~ has(Start_state,goto(Label))
          | ~ labels(Label,Goal_state) )
      <=> ( succeeds(Goal_state,Start_state)
          | ~ has(Start_state,goto(Label))
          | ~ labels(Label,Goal_state) ) )),
    inference(bind,[status(th)],]) ).

tff(8,plain,
    ( ! [Goal_state: state,Label: label,Start_state: state] :
        ( succeeds(Goal_state,Start_state)
        | ~ has(Start_state,goto(Label))
        | ~ labels(Label,Goal_state) )
  <=> ! [Goal_state: state,Label: label,Start_state: state] :
        ( succeeds(Goal_state,Start_state)
        | ~ has(Start_state,goto(Label))
        | ~ labels(Label,Goal_state) ) ),
    inference(quant_intro,[status(thm)],[7]) ).

tff(9,plain,
    ^ [Goal_state: state,Label: label,Start_state: state] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              rewrite(
                ( ( has(Start_state,goto(Label))
                  & labels(Label,Goal_state) )
              <=> ~ ( ~ has(Start_state,goto(Label))
                    | ~ labels(Label,Goal_state) ) )),
              ( ~ ( has(Start_state,goto(Label))
                  & labels(Label,Goal_state) )
            <=> ~ ~ ( ~ has(Start_state,goto(Label))
                    | ~ labels(Label,Goal_state) ) )),
            rewrite(
              ( ~ ~ ( ~ has(Start_state,goto(Label))
                    | ~ labels(Label,Goal_state) )
            <=> ( ~ has(Start_state,goto(Label))
                | ~ labels(Label,Goal_state) ) )),
            ( ~ ( has(Start_state,goto(Label))
                & labels(Label,Goal_state) )
          <=> ( ~ has(Start_state,goto(Label))
              | ~ labels(Label,Goal_state) ) )),
          ( ( ~ ( has(Start_state,goto(Label))
                & labels(Label,Goal_state) )
            | succeeds(Goal_state,Start_state) )
        <=> ( ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state)
            | succeeds(Goal_state,Start_state) ) )),
        rewrite(
          ( ( ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state)
            | succeeds(Goal_state,Start_state) )
        <=> ( succeeds(Goal_state,Start_state)
            | ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state) ) )),
        ( ( ~ ( has(Start_state,goto(Label))
              & labels(Label,Goal_state) )
          | succeeds(Goal_state,Start_state) )
      <=> ( succeeds(Goal_state,Start_state)
          | ~ has(Start_state,goto(Label))
          | ~ labels(Label,Goal_state) ) )),
    inference(bind,[status(th)],]) ).

tff(10,plain,
    ( ! [Goal_state: state,Label: label,Start_state: state] :
        ( ~ ( has(Start_state,goto(Label))
            & labels(Label,Goal_state) )
        | succeeds(Goal_state,Start_state) )
  <=> ! [Goal_state: state,Label: label,Start_state: state] :
        ( succeeds(Goal_state,Start_state)
        | ~ has(Start_state,goto(Label))
        | ~ labels(Label,Goal_state) ) ),
    inference(quant_intro,[status(thm)],[9]) ).

tff(11,plain,
    ( ! [Goal_state: state,Label: label,Start_state: state] :
        ( ~ ( has(Start_state,goto(Label))
            & labels(Label,Goal_state) )
        | succeeds(Goal_state,Start_state) )
  <=> ! [Goal_state: state,Label: label,Start_state: state] :
        ( ~ ( has(Start_state,goto(Label))
            & labels(Label,Goal_state) )
        | succeeds(Goal_state,Start_state) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(12,plain,
    ^ [Goal_state: state,Label: label,Start_state: state] :
      rewrite(
        ( ( ( has(Start_state,goto(Label))
            & labels(Label,Goal_state) )
         => succeeds(Goal_state,Start_state) )
      <=> ( ~ ( has(Start_state,goto(Label))
              & labels(Label,Goal_state) )
          | succeeds(Goal_state,Start_state) ) )),
    inference(bind,[status(th)],]) ).

tff(13,plain,
    ( ! [Goal_state: state,Label: label,Start_state: state] :
        ( ( has(Start_state,goto(Label))
          & labels(Label,Goal_state) )
       => succeeds(Goal_state,Start_state) )
  <=> ! [Goal_state: state,Label: label,Start_state: state] :
        ( ~ ( has(Start_state,goto(Label))
            & labels(Label,Goal_state) )
        | succeeds(Goal_state,Start_state) ) ),
    inference(quant_intro,[status(thm)],[12]) ).

tff(14,axiom,
    ! [Goal_state: state,Label: label,Start_state: state] :
      ( ( has(Start_state,goto(Label))
        & labels(Label,Goal_state) )
     => succeeds(Goal_state,Start_state) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',goto_success) ).

tff(15,plain,
    ! [Goal_state: state,Label: label,Start_state: state] :
      ( ~ ( has(Start_state,goto(Label))
          & labels(Label,Goal_state) )
      | succeeds(Goal_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[14,13]) ).

tff(16,plain,
    ! [Goal_state: state,Label: label,Start_state: state] :
      ( ~ ( has(Start_state,goto(Label))
          & labels(Label,Goal_state) )
      | succeeds(Goal_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[15,11]) ).

tff(17,plain,
    ! [Goal_state: state,Label: label,Start_state: state] :
      ( ~ ( has(Start_state,goto(Label))
          & labels(Label,Goal_state) )
      | succeeds(Goal_state,Start_state) ),
    inference(skolemize,[status(sab)],[16]) ).

tff(18,plain,
    ! [Goal_state: state,Label: label,Start_state: state] :
      ( succeeds(Goal_state,Start_state)
      | ~ has(Start_state,goto(Label))
      | ~ labels(Label,Goal_state) ),
    inference(modus_ponens,[status(thm)],[17,10]) ).

tff(19,plain,
    ! [Goal_state: state,Label: label,Start_state: state] :
      ( succeeds(Goal_state,Start_state)
      | ~ has(Start_state,goto(Label))
      | ~ labels(Label,Goal_state) ),
    inference(modus_ponens,[status(thm)],[18,8]) ).

tff(20,plain,
    ( ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state) )
      | ~ labels(loop,p3)
      | succeeds(p3,p8)
      | ~ has(p8,goto(loop)) )
  <=> ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state) )
      | ~ labels(loop,p3)
      | succeeds(p3,p8)
      | ~ has(p8,goto(loop)) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(21,plain,
    ( ( succeeds(p3,p8)
      | ~ has(p8,goto(loop))
      | ~ labels(loop,p3) )
  <=> ( ~ labels(loop,p3)
      | succeeds(p3,p8)
      | ~ has(p8,goto(loop)) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(22,plain,
    ( ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state) )
      | succeeds(p3,p8)
      | ~ has(p8,goto(loop))
      | ~ labels(loop,p3) )
  <=> ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state) )
      | ~ labels(loop,p3)
      | succeeds(p3,p8)
      | ~ has(p8,goto(loop)) ) ),
    inference(monotonicity,[status(thm)],[21]) ).

tff(23,plain,
    ( ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state) )
      | succeeds(p3,p8)
      | ~ has(p8,goto(loop))
      | ~ labels(loop,p3) )
  <=> ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ has(Start_state,goto(Label))
            | ~ labels(Label,Goal_state) )
      | ~ labels(loop,p3)
      | succeeds(p3,p8)
      | ~ has(p8,goto(loop)) ) ),
    inference(transitivity,[status(thm)],[22,20]) ).

tff(24,plain,
    ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
          ( succeeds(Goal_state,Start_state)
          | ~ has(Start_state,goto(Label))
          | ~ labels(Label,Goal_state) )
    | succeeds(p3,p8)
    | ~ has(p8,goto(loop))
    | ~ labels(loop,p3) ),
    inference(quant_inst,[status(thm)],]) ).

tff(25,plain,
    ( ~ ! [Goal_state: state,Label: label,Start_state: state] :
          ( succeeds(Goal_state,Start_state)
          | ~ has(Start_state,goto(Label))
          | ~ labels(Label,Goal_state) )
    | ~ labels(loop,p3)
    | succeeds(p3,p8)
    | ~ has(p8,goto(loop)) ),
    inference(modus_ponens,[status(thm)],[24,23]) ).

tff(26,plain,
    succeeds(p3,p8),
    inference(unit_resolution,[status(thm)],[25,19,6,3]) ).

tff(27,plain,
    ( follows(p8,p3)
  <=> follows(p8,p3) ),
    inference(rewrite,[status(thm)],]) ).

tff(28,axiom,
    follows(p8,p3),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',transition_3_to_8) ).

tff(29,plain,
    follows(p8,p3),
    inference(modus_ponens,[status(thm)],[28,27]) ).

tff(30,plain,
    ^ [Start_state: state,Goal_state: state] :
      refl(
        ( ( ~ follows(Goal_state,Start_state)
          | succeeds(Goal_state,Start_state) )
      <=> ( ~ follows(Goal_state,Start_state)
          | succeeds(Goal_state,Start_state) ) )),
    inference(bind,[status(th)],]) ).

tff(31,plain,
    ( ! [Start_state: state,Goal_state: state] :
        ( ~ follows(Goal_state,Start_state)
        | succeeds(Goal_state,Start_state) )
  <=> ! [Start_state: state,Goal_state: state] :
        ( ~ follows(Goal_state,Start_state)
        | succeeds(Goal_state,Start_state) ) ),
    inference(quant_intro,[status(thm)],[30]) ).

tff(32,plain,
    ( ! [Start_state: state,Goal_state: state] :
        ( ~ follows(Goal_state,Start_state)
        | succeeds(Goal_state,Start_state) )
  <=> ! [Start_state: state,Goal_state: state] :
        ( ~ follows(Goal_state,Start_state)
        | succeeds(Goal_state,Start_state) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(33,plain,
    ^ [Start_state: state,Goal_state: state] :
      rewrite(
        ( ( follows(Goal_state,Start_state)
         => succeeds(Goal_state,Start_state) )
      <=> ( ~ follows(Goal_state,Start_state)
          | succeeds(Goal_state,Start_state) ) )),
    inference(bind,[status(th)],]) ).

tff(34,plain,
    ( ! [Start_state: state,Goal_state: state] :
        ( follows(Goal_state,Start_state)
       => succeeds(Goal_state,Start_state) )
  <=> ! [Start_state: state,Goal_state: state] :
        ( ~ follows(Goal_state,Start_state)
        | succeeds(Goal_state,Start_state) ) ),
    inference(quant_intro,[status(thm)],[33]) ).

tff(35,axiom,
    ! [Start_state: state,Goal_state: state] :
      ( follows(Goal_state,Start_state)
     => succeeds(Goal_state,Start_state) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',direct_success) ).

tff(36,plain,
    ! [Start_state: state,Goal_state: state] :
      ( ~ follows(Goal_state,Start_state)
      | succeeds(Goal_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[35,34]) ).

tff(37,plain,
    ! [Start_state: state,Goal_state: state] :
      ( ~ follows(Goal_state,Start_state)
      | succeeds(Goal_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[36,32]) ).

tff(38,plain,
    ! [Start_state: state,Goal_state: state] :
      ( ~ follows(Goal_state,Start_state)
      | succeeds(Goal_state,Start_state) ),
    inference(skolemize,[status(sab)],[37]) ).

tff(39,plain,
    ! [Start_state: state,Goal_state: state] :
      ( ~ follows(Goal_state,Start_state)
      | succeeds(Goal_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[38,31]) ).

tff(40,plain,
    ( ( ~ ! [Start_state: state,Goal_state: state] :
            ( ~ follows(Goal_state,Start_state)
            | succeeds(Goal_state,Start_state) )
      | ~ follows(p8,p3)
      | succeeds(p8,p3) )
  <=> ( ~ ! [Start_state: state,Goal_state: state] :
            ( ~ follows(Goal_state,Start_state)
            | succeeds(Goal_state,Start_state) )
      | ~ follows(p8,p3)
      | succeeds(p8,p3) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(41,plain,
    ( ~ ! [Start_state: state,Goal_state: state] :
          ( ~ follows(Goal_state,Start_state)
          | succeeds(Goal_state,Start_state) )
    | ~ follows(p8,p3)
    | succeeds(p8,p3) ),
    inference(quant_inst,[status(thm)],]) ).

tff(42,plain,
    ( ~ ! [Start_state: state,Goal_state: state] :
          ( ~ follows(Goal_state,Start_state)
          | succeeds(Goal_state,Start_state) )
    | ~ follows(p8,p3)
    | succeeds(p8,p3) ),
    inference(modus_ponens,[status(thm)],[41,40]) ).

tff(43,plain,
    succeeds(p8,p3),
    inference(unit_resolution,[status(thm)],[42,39,29]) ).

tff(44,plain,
    ( ~ succeeds(p3,p3)
  <=> ~ succeeds(p3,p3) ),
    inference(rewrite,[status(thm)],]) ).

tff(45,axiom,
    ~ succeeds(p3,p3),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_there_is_a_loop_through_p3) ).

tff(46,plain,
    ~ succeeds(p3,p3),
    inference(modus_ponens,[status(thm)],[45,44]) ).

tff(47,plain,
    ( ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( succeeds(Goal_state,Start_state)
        | ~ succeeds(Goal_state,Intermediate_state)
        | ~ succeeds(Intermediate_state,Start_state) )
  <=> ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( succeeds(Goal_state,Start_state)
        | ~ succeeds(Goal_state,Intermediate_state)
        | ~ succeeds(Intermediate_state,Start_state) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(48,plain,
    ^ [Start_state: state,Intermediate_state: state,Goal_state: state] :
      trans(
        monotonicity(
          trans(
            monotonicity(
              rewrite(
                ( ( succeeds(Goal_state,Intermediate_state)
                  & succeeds(Intermediate_state,Start_state) )
              <=> ~ ( ~ succeeds(Goal_state,Intermediate_state)
                    | ~ succeeds(Intermediate_state,Start_state) ) )),
              ( ~ ( succeeds(Goal_state,Intermediate_state)
                  & succeeds(Intermediate_state,Start_state) )
            <=> ~ ~ ( ~ succeeds(Goal_state,Intermediate_state)
                    | ~ succeeds(Intermediate_state,Start_state) ) )),
            rewrite(
              ( ~ ~ ( ~ succeeds(Goal_state,Intermediate_state)
                    | ~ succeeds(Intermediate_state,Start_state) )
            <=> ( ~ succeeds(Goal_state,Intermediate_state)
                | ~ succeeds(Intermediate_state,Start_state) ) )),
            ( ~ ( succeeds(Goal_state,Intermediate_state)
                & succeeds(Intermediate_state,Start_state) )
          <=> ( ~ succeeds(Goal_state,Intermediate_state)
              | ~ succeeds(Intermediate_state,Start_state) ) )),
          ( ( ~ ( succeeds(Goal_state,Intermediate_state)
                & succeeds(Intermediate_state,Start_state) )
            | succeeds(Goal_state,Start_state) )
        <=> ( ~ succeeds(Goal_state,Intermediate_state)
            | ~ succeeds(Intermediate_state,Start_state)
            | succeeds(Goal_state,Start_state) ) )),
        rewrite(
          ( ( ~ succeeds(Goal_state,Intermediate_state)
            | ~ succeeds(Intermediate_state,Start_state)
            | succeeds(Goal_state,Start_state) )
        <=> ( succeeds(Goal_state,Start_state)
            | ~ succeeds(Goal_state,Intermediate_state)
            | ~ succeeds(Intermediate_state,Start_state) ) )),
        ( ( ~ ( succeeds(Goal_state,Intermediate_state)
              & succeeds(Intermediate_state,Start_state) )
          | succeeds(Goal_state,Start_state) )
      <=> ( succeeds(Goal_state,Start_state)
          | ~ succeeds(Goal_state,Intermediate_state)
          | ~ succeeds(Intermediate_state,Start_state) ) )),
    inference(bind,[status(th)],]) ).

tff(49,plain,
    ( ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( ~ ( succeeds(Goal_state,Intermediate_state)
            & succeeds(Intermediate_state,Start_state) )
        | succeeds(Goal_state,Start_state) )
  <=> ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( succeeds(Goal_state,Start_state)
        | ~ succeeds(Goal_state,Intermediate_state)
        | ~ succeeds(Intermediate_state,Start_state) ) ),
    inference(quant_intro,[status(thm)],[48]) ).

tff(50,plain,
    ( ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( ~ ( succeeds(Goal_state,Intermediate_state)
            & succeeds(Intermediate_state,Start_state) )
        | succeeds(Goal_state,Start_state) )
  <=> ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( ~ ( succeeds(Goal_state,Intermediate_state)
            & succeeds(Intermediate_state,Start_state) )
        | succeeds(Goal_state,Start_state) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(51,plain,
    ^ [Start_state: state,Intermediate_state: state,Goal_state: state] :
      rewrite(
        ( ( ( succeeds(Goal_state,Intermediate_state)
            & succeeds(Intermediate_state,Start_state) )
         => succeeds(Goal_state,Start_state) )
      <=> ( ~ ( succeeds(Goal_state,Intermediate_state)
              & succeeds(Intermediate_state,Start_state) )
          | succeeds(Goal_state,Start_state) ) )),
    inference(bind,[status(th)],]) ).

tff(52,plain,
    ( ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( ( succeeds(Goal_state,Intermediate_state)
          & succeeds(Intermediate_state,Start_state) )
       => succeeds(Goal_state,Start_state) )
  <=> ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
        ( ~ ( succeeds(Goal_state,Intermediate_state)
            & succeeds(Intermediate_state,Start_state) )
        | succeeds(Goal_state,Start_state) ) ),
    inference(quant_intro,[status(thm)],[51]) ).

tff(53,axiom,
    ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
      ( ( succeeds(Goal_state,Intermediate_state)
        & succeeds(Intermediate_state,Start_state) )
     => succeeds(Goal_state,Start_state) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',transitivity_of_success) ).

tff(54,plain,
    ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
      ( ~ ( succeeds(Goal_state,Intermediate_state)
          & succeeds(Intermediate_state,Start_state) )
      | succeeds(Goal_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[53,52]) ).

tff(55,plain,
    ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
      ( ~ ( succeeds(Goal_state,Intermediate_state)
          & succeeds(Intermediate_state,Start_state) )
      | succeeds(Goal_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[54,50]) ).

tff(56,plain,
    ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
      ( ~ ( succeeds(Goal_state,Intermediate_state)
          & succeeds(Intermediate_state,Start_state) )
      | succeeds(Goal_state,Start_state) ),
    inference(skolemize,[status(sab)],[55]) ).

tff(57,plain,
    ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
      ( succeeds(Goal_state,Start_state)
      | ~ succeeds(Goal_state,Intermediate_state)
      | ~ succeeds(Intermediate_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[56,49]) ).

tff(58,plain,
    ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
      ( succeeds(Goal_state,Start_state)
      | ~ succeeds(Goal_state,Intermediate_state)
      | ~ succeeds(Intermediate_state,Start_state) ),
    inference(modus_ponens,[status(thm)],[57,47]) ).

tff(59,plain,
    ( ( ~ ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ succeeds(Goal_state,Intermediate_state)
            | ~ succeeds(Intermediate_state,Start_state) )
      | succeeds(p3,p3)
      | ~ succeeds(p3,p8)
      | ~ succeeds(p8,p3) )
  <=> ( ~ ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
            ( succeeds(Goal_state,Start_state)
            | ~ succeeds(Goal_state,Intermediate_state)
            | ~ succeeds(Intermediate_state,Start_state) )
      | succeeds(p3,p3)
      | ~ succeeds(p3,p8)
      | ~ succeeds(p8,p3) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(60,plain,
    ( ~ ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
          ( succeeds(Goal_state,Start_state)
          | ~ succeeds(Goal_state,Intermediate_state)
          | ~ succeeds(Intermediate_state,Start_state) )
    | succeeds(p3,p3)
    | ~ succeeds(p3,p8)
    | ~ succeeds(p8,p3) ),
    inference(quant_inst,[status(thm)],]) ).

tff(61,plain,
    ( ~ ! [Start_state: state,Intermediate_state: state,Goal_state: state] :
          ( succeeds(Goal_state,Start_state)
          | ~ succeeds(Goal_state,Intermediate_state)
          | ~ succeeds(Intermediate_state,Start_state) )
    | succeeds(p3,p3)
    | ~ succeeds(p3,p8)
    | ~ succeeds(p8,p3) ),
    inference(modus_ponens,[status(thm)],[60,59]) ).

tff(62,plain,
    $false,
    inference(unit_resolution,[status(thm)],[61,58,46,43,26]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.12  % Problem  : COM001_1 : TPTP v8.1.0. Released v5.0.0.
% 0.06/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.13/0.34  % Computer : n028.cluster.edu
% 0.13/0.34  % Model    : x86_64 x86_64
% 0.13/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34  % Memory   : 8042.1875MB
% 0.13/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34  % CPULimit : 300
% 0.13/0.34  % WCLimit  : 300
% 0.13/0.34  % DateTime : Tue Aug 30 13:21:33 EDT 2022
% 0.13/0.34  % CPUTime  : 
% 0.13/0.34  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.13/0.34  Usage: tptp [options] [-file:]file
% 0.13/0.34    -h, -?       prints this message.
% 0.13/0.34    -smt2        print SMT-LIB2 benchmark.
% 0.13/0.34    -m, -model   generate model.
% 0.13/0.34    -p, -proof   generate proof.
% 0.13/0.34    -c, -core    generate unsat core of named formulas.
% 0.13/0.34    -st, -statistics display statistics.
% 0.13/0.34    -t:timeout   set timeout (in second).
% 0.13/0.34    -smt2status  display status in smt2 format instead of SZS.
% 0.13/0.34    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.13/0.34    -<param>:<value> configuration parameter and value.
% 0.13/0.34    -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
%------------------------------------------------------------------------------