TSTP Solution File: SWV254-2 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : SWV254-2 : TPTP v8.1.0. Released v3.2.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n029.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 : Thu Sep 29 15:10:37 EDT 2022

% Result   : Unsatisfiable 0.18s 0.39s
% Output   : Proof 0.18s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   12
%            Number of leaves      :   35
% Syntax   : Number of formulae    :   77 (  32 unt;   9 typ;   0 def)
%            Number of atoms       :  183 (  84 equ)
%            Maximal formula atoms :   12 (   2 avg)
%            Number of connectives :  208 (  99   ~;  79   |;   0   &)
%                                         (  30 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   10 (   4 avg)
%            Maximal term depth    :    3 (   1 avg)
%            Number of FOOLs       :    6 (   6 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :   12 (   6   >;   6   *;   0   +;   0  <<)
%            Number of predicates  :    6 (   4 usr;   1 prp; 0-3 aty)
%            Number of functors    :    7 (   7 usr;   3 con; 0-3 aty)
%            Number of variables   :  123 ( 111   !;   0   ?; 123   :)

% Comments : 
%------------------------------------------------------------------------------
tff(c_lessequals_type,type,
    c_lessequals: ( $i * $i * $i ) > $o ).

tff(tc_nat_type,type,
    tc_nat: $i ).

tff(v_x_type,type,
    v_x: $i > $i ).

tff(c_Suc_type,type,
    c_Suc: $i > $i ).

tff(v_nat_type,type,
    v_nat: $i ).

tff(c_emptyset_type,type,
    c_emptyset: $i ).

tff(c_SetInterval_OatLeastLessThan_type,type,
    c_SetInterval_OatLeastLessThan: ( $i * $i * $i ) > $i ).

tff(c_insert_type,type,
    c_insert: ( $i * $i * $i ) > $i ).

tff(class_Orderings_Oorder_type,type,
    class_Orderings_Oorder: $i > $o ).

tff(1,plain,
    ^ [V_U: $i] :
      refl(
        ( ( v_x(V_U) = v_nat )
      <=> ( v_x(V_U) = v_nat ) )),
    inference(bind,[status(th)],]) ).

tff(2,plain,
    ( ! [V_U: $i] : ( v_x(V_U) = v_nat )
  <=> ! [V_U: $i] : ( v_x(V_U) = v_nat ) ),
    inference(quant_intro,[status(thm)],[1]) ).

tff(3,plain,
    ( ! [V_U: $i] : ( v_x(V_U) = v_nat )
  <=> ! [V_U: $i] : ( v_x(V_U) = v_nat ) ),
    inference(rewrite,[status(thm)],]) ).

tff(4,axiom,
    ! [V_U: $i] : ( v_x(V_U) = v_nat ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cls_conjecture_1) ).

tff(5,plain,
    ! [V_U: $i] : ( v_x(V_U) = v_nat ),
    inference(modus_ponens,[status(thm)],[4,3]) ).

tff(6,plain,
    ! [V_U: $i] : ( v_x(V_U) = v_nat ),
    inference(skolemize,[status(sab)],[5]) ).

tff(7,plain,
    ! [V_U: $i] : ( v_x(V_U) = v_nat ),
    inference(modus_ponens,[status(thm)],[6,2]) ).

tff(8,plain,
    ( ~ ! [V_U: $i] : ( v_x(V_U) = v_nat )
    | ( v_x(c_Suc(v_nat)) = v_nat ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(9,plain,
    v_x(c_Suc(v_nat)) = v_nat,
    inference(unit_resolution,[status(thm)],[8,7]) ).

tff(10,plain,
    ( c_lessequals(c_Suc(v_nat),v_x(c_Suc(v_nat)),tc_nat)
  <=> c_lessequals(c_Suc(v_nat),v_nat,tc_nat) ),
    inference(monotonicity,[status(thm)],[9]) ).

tff(11,plain,
    ( c_lessequals(c_Suc(v_nat),v_nat,tc_nat)
  <=> c_lessequals(c_Suc(v_nat),v_x(c_Suc(v_nat)),tc_nat) ),
    inference(symmetry,[status(thm)],[10]) ).

tff(12,plain,
    ( ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat)
  <=> ~ c_lessequals(c_Suc(v_nat),v_x(c_Suc(v_nat)),tc_nat) ),
    inference(monotonicity,[status(thm)],[11]) ).

tff(13,plain,
    ( ( c_insert(v_nat,c_emptyset,tc_nat) = c_emptyset )
  <=> ( c_emptyset = c_insert(v_nat,c_emptyset,tc_nat) ) ),
    inference(commutativity,[status(thm)],]) ).

tff(14,plain,
    ^ [V_m: $i] :
      refl(
        ( ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) )
      <=> ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) ) )),
    inference(bind,[status(th)],]) ).

tff(15,plain,
    ( ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) )
  <=> ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) ) ),
    inference(quant_intro,[status(thm)],[14]) ).

tff(16,plain,
    ( ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) )
  <=> ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(17,axiom,
    ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cls_SetInterval_OatLeastLessThan__singleton_0) ).

tff(18,plain,
    ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) ),
    inference(modus_ponens,[status(thm)],[17,16]) ).

tff(19,plain,
    ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) ),
    inference(skolemize,[status(sab)],[18]) ).

tff(20,plain,
    ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) ),
    inference(modus_ponens,[status(thm)],[19,15]) ).

tff(21,plain,
    ( ~ ! [V_m: $i] : ( c_SetInterval_OatLeastLessThan(V_m,c_Suc(V_m),tc_nat) = c_insert(V_m,c_emptyset,tc_nat) )
    | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_insert(v_nat,c_emptyset,tc_nat) ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(22,plain,
    c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_insert(v_nat,c_emptyset,tc_nat),
    inference(unit_resolution,[status(thm)],[21,20]) ).

tff(23,plain,
    ( ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
  <=> ( c_insert(v_nat,c_emptyset,tc_nat) = c_emptyset ) ),
    inference(monotonicity,[status(thm)],[22]) ).

tff(24,plain,
    ( ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
  <=> ( c_emptyset = c_insert(v_nat,c_emptyset,tc_nat) ) ),
    inference(transitivity,[status(thm)],[23,13]) ).

tff(25,plain,
    ( ( c_emptyset = c_insert(v_nat,c_emptyset,tc_nat) )
  <=> ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset ) ),
    inference(symmetry,[status(thm)],[24]) ).

tff(26,plain,
    ( ( c_emptyset != c_insert(v_nat,c_emptyset,tc_nat) )
  <=> ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) != c_emptyset ) ),
    inference(monotonicity,[status(thm)],[25]) ).

tff(27,plain,
    ^ [V_a: $i,T_a: $i,V_A: $i] :
      refl(
        ( ( c_emptyset != c_insert(V_a,V_A,T_a) )
      <=> ( c_emptyset != c_insert(V_a,V_A,T_a) ) )),
    inference(bind,[status(th)],]) ).

tff(28,plain,
    ( ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) )
  <=> ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) ) ),
    inference(quant_intro,[status(thm)],[27]) ).

tff(29,plain,
    ( ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) )
  <=> ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(30,axiom,
    ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cls_Set_Oempty__not__insert_0) ).

tff(31,plain,
    ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) ),
    inference(modus_ponens,[status(thm)],[30,29]) ).

tff(32,plain,
    ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) ),
    inference(skolemize,[status(sab)],[31]) ).

tff(33,plain,
    ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) ),
    inference(modus_ponens,[status(thm)],[32,28]) ).

tff(34,plain,
    ( ~ ! [V_a: $i,T_a: $i,V_A: $i] : ( c_emptyset != c_insert(V_a,V_A,T_a) )
    | ( c_emptyset != c_insert(v_nat,c_emptyset,tc_nat) ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(35,plain,
    c_emptyset != c_insert(v_nat,c_emptyset,tc_nat),
    inference(unit_resolution,[status(thm)],[34,33]) ).

tff(36,plain,
    c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) != c_emptyset,
    inference(modus_ponens,[status(thm)],[35,26]) ).

tff(37,plain,
    ( class_Orderings_Oorder(tc_nat)
  <=> class_Orderings_Oorder(tc_nat) ),
    inference(rewrite,[status(thm)],]) ).

tff(38,axiom,
    class_Orderings_Oorder(tc_nat),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',clsarity_nat_3) ).

tff(39,plain,
    class_Orderings_Oorder(tc_nat),
    inference(modus_ponens,[status(thm)],[38,37]) ).

tff(40,plain,
    ^ [V_n: $i,T_a: $i,V_m: $i] :
      refl(
        ( ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
          | ~ c_lessequals(V_n,V_m,T_a)
          | ~ class_Orderings_Oorder(T_a) )
      <=> ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
          | ~ c_lessequals(V_n,V_m,T_a)
          | ~ class_Orderings_Oorder(T_a) ) )),
    inference(bind,[status(th)],]) ).

tff(41,plain,
    ( ! [V_n: $i,T_a: $i,V_m: $i] :
        ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
        | ~ c_lessequals(V_n,V_m,T_a)
        | ~ class_Orderings_Oorder(T_a) )
  <=> ! [V_n: $i,T_a: $i,V_m: $i] :
        ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
        | ~ c_lessequals(V_n,V_m,T_a)
        | ~ class_Orderings_Oorder(T_a) ) ),
    inference(quant_intro,[status(thm)],[40]) ).

tff(42,plain,
    ( ! [V_n: $i,T_a: $i,V_m: $i] :
        ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
        | ~ c_lessequals(V_n,V_m,T_a)
        | ~ class_Orderings_Oorder(T_a) )
  <=> ! [V_n: $i,T_a: $i,V_m: $i] :
        ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
        | ~ c_lessequals(V_n,V_m,T_a)
        | ~ class_Orderings_Oorder(T_a) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(43,plain,
    ^ [V_n: $i,T_a: $i,V_m: $i] :
      rewrite(
        ( ( ~ class_Orderings_Oorder(T_a)
          | ~ c_lessequals(V_n,V_m,T_a)
          | ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset ) )
      <=> ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
          | ~ c_lessequals(V_n,V_m,T_a)
          | ~ class_Orderings_Oorder(T_a) ) )),
    inference(bind,[status(th)],]) ).

tff(44,plain,
    ( ! [V_n: $i,T_a: $i,V_m: $i] :
        ( ~ class_Orderings_Oorder(T_a)
        | ~ c_lessequals(V_n,V_m,T_a)
        | ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset ) )
  <=> ! [V_n: $i,T_a: $i,V_m: $i] :
        ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
        | ~ c_lessequals(V_n,V_m,T_a)
        | ~ class_Orderings_Oorder(T_a) ) ),
    inference(quant_intro,[status(thm)],[43]) ).

tff(45,axiom,
    ! [V_n: $i,T_a: $i,V_m: $i] :
      ( ~ class_Orderings_Oorder(T_a)
      | ~ c_lessequals(V_n,V_m,T_a)
      | ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cls_SetInterval_OatLeastLessThan__empty_0) ).

tff(46,plain,
    ! [V_n: $i,T_a: $i,V_m: $i] :
      ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
      | ~ c_lessequals(V_n,V_m,T_a)
      | ~ class_Orderings_Oorder(T_a) ),
    inference(modus_ponens,[status(thm)],[45,44]) ).

tff(47,plain,
    ! [V_n: $i,T_a: $i,V_m: $i] :
      ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
      | ~ c_lessequals(V_n,V_m,T_a)
      | ~ class_Orderings_Oorder(T_a) ),
    inference(modus_ponens,[status(thm)],[46,42]) ).

tff(48,plain,
    ! [V_n: $i,T_a: $i,V_m: $i] :
      ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
      | ~ c_lessequals(V_n,V_m,T_a)
      | ~ class_Orderings_Oorder(T_a) ),
    inference(skolemize,[status(sab)],[47]) ).

tff(49,plain,
    ! [V_n: $i,T_a: $i,V_m: $i] :
      ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
      | ~ c_lessequals(V_n,V_m,T_a)
      | ~ class_Orderings_Oorder(T_a) ),
    inference(modus_ponens,[status(thm)],[48,41]) ).

tff(50,plain,
    ( ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
            ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
            | ~ c_lessequals(V_n,V_m,T_a)
            | ~ class_Orderings_Oorder(T_a) )
      | ~ class_Orderings_Oorder(tc_nat)
      | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat) )
  <=> ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
            ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
            | ~ c_lessequals(V_n,V_m,T_a)
            | ~ class_Orderings_Oorder(T_a) )
      | ~ class_Orderings_Oorder(tc_nat)
      | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(51,plain,
    ( ( ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat)
      | ~ class_Orderings_Oorder(tc_nat) )
  <=> ( ~ class_Orderings_Oorder(tc_nat)
      | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(52,plain,
    ( ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
            ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
            | ~ c_lessequals(V_n,V_m,T_a)
            | ~ class_Orderings_Oorder(T_a) )
      | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat)
      | ~ class_Orderings_Oorder(tc_nat) )
  <=> ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
            ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
            | ~ c_lessequals(V_n,V_m,T_a)
            | ~ class_Orderings_Oorder(T_a) )
      | ~ class_Orderings_Oorder(tc_nat)
      | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat) ) ),
    inference(monotonicity,[status(thm)],[51]) ).

tff(53,plain,
    ( ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
            ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
            | ~ c_lessequals(V_n,V_m,T_a)
            | ~ class_Orderings_Oorder(T_a) )
      | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat)
      | ~ class_Orderings_Oorder(tc_nat) )
  <=> ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
            ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
            | ~ c_lessequals(V_n,V_m,T_a)
            | ~ class_Orderings_Oorder(T_a) )
      | ~ class_Orderings_Oorder(tc_nat)
      | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
      | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat) ) ),
    inference(transitivity,[status(thm)],[52,50]) ).

tff(54,plain,
    ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
          ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
          | ~ c_lessequals(V_n,V_m,T_a)
          | ~ class_Orderings_Oorder(T_a) )
    | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
    | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat)
    | ~ class_Orderings_Oorder(tc_nat) ),
    inference(quant_inst,[status(thm)],]) ).

tff(55,plain,
    ( ~ ! [V_n: $i,T_a: $i,V_m: $i] :
          ( ( c_SetInterval_OatLeastLessThan(V_m,V_n,T_a) = c_emptyset )
          | ~ c_lessequals(V_n,V_m,T_a)
          | ~ class_Orderings_Oorder(T_a) )
    | ~ class_Orderings_Oorder(tc_nat)
    | ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
    | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat) ),
    inference(modus_ponens,[status(thm)],[54,53]) ).

tff(56,plain,
    ( ( c_SetInterval_OatLeastLessThan(v_nat,c_Suc(v_nat),tc_nat) = c_emptyset )
    | ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat) ),
    inference(unit_resolution,[status(thm)],[55,49,39]) ).

tff(57,plain,
    ~ c_lessequals(c_Suc(v_nat),v_nat,tc_nat),
    inference(unit_resolution,[status(thm)],[56,36]) ).

tff(58,plain,
    ~ c_lessequals(c_Suc(v_nat),v_x(c_Suc(v_nat)),tc_nat),
    inference(modus_ponens,[status(thm)],[57,12]) ).

tff(59,plain,
    ^ [V_U: $i] :
      refl(
        ( c_lessequals(V_U,v_x(V_U),tc_nat)
      <=> c_lessequals(V_U,v_x(V_U),tc_nat) )),
    inference(bind,[status(th)],]) ).

tff(60,plain,
    ( ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat)
  <=> ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat) ),
    inference(quant_intro,[status(thm)],[59]) ).

tff(61,plain,
    ( ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat)
  <=> ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat) ),
    inference(rewrite,[status(thm)],]) ).

tff(62,axiom,
    ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',cls_conjecture_0) ).

tff(63,plain,
    ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat),
    inference(modus_ponens,[status(thm)],[62,61]) ).

tff(64,plain,
    ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat),
    inference(skolemize,[status(sab)],[63]) ).

tff(65,plain,
    ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat),
    inference(modus_ponens,[status(thm)],[64,60]) ).

tff(66,plain,
    ( ~ ! [V_U: $i] : c_lessequals(V_U,v_x(V_U),tc_nat)
    | c_lessequals(c_Suc(v_nat),v_x(c_Suc(v_nat)),tc_nat) ),
    inference(quant_inst,[status(thm)],]) ).

tff(67,plain,
    c_lessequals(c_Suc(v_nat),v_x(c_Suc(v_nat)),tc_nat),
    inference(unit_resolution,[status(thm)],[66,65]) ).

tff(68,plain,
    $false,
    inference(unit_resolution,[status(thm)],[67,58]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.11  % Problem  : SWV254-2 : TPTP v8.1.0. Released v3.2.0.
% 0.03/0.12  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.12/0.33  % Computer : n029.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 : Sun Sep  4 02:07:00 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.
% 0.18/0.39  % SZS status Unsatisfiable
% 0.18/0.39  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------