TSTP Solution File: RNG041-1 by Z3---4.8.9.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Z3---4.8.9.0
% Problem  : RNG041-1 : TPTP v8.1.0. Released v1.0.0.
% Transfm  : none
% Format   : tptp
% Command  : z3_tptp -proof -model -t:%d -file:%s

% Computer : n022.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 20 03:17:52 EDT 2022

% Result   : Unsatisfiable 0.84s 0.78s
% Output   : Proof 0.84s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :   39
% Syntax   : Number of formulae    :   78 (  27 unt;   6 typ;   0 def)
%            Number of atoms       :  321 (  54 equ)
%            Maximal formula atoms :   16 (   4 avg)
%            Number of connectives :  424 ( 189   ~; 202   |;   0   &)
%                                         (  33 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :   14 (   6 avg)
%            Maximal term depth    :    2 (   1 avg)
%            Number of FOOLs       :   14 (  14 fml;   0 var)
%            Number of types       :    2 (   0 usr)
%            Number of type conns  :    4 (   2   >;   2   *;   0   +;   0  <<)
%            Number of predicates  :    7 (   5 usr;   1 prp; 0-3 aty)
%            Number of functors    :    5 (   5 usr;   4 con; 0-1 aty)
%            Number of variables   :  231 ( 207   !;   0   ?; 231   :)

% Comments : 
%------------------------------------------------------------------------------
tff(product_type,type,
    product: ( $i * $i * $i ) > $o ).

tff(additive_identity_type,type,
    additive_identity: $i ).

tff(h_type,type,
    h: $i > $i ).

tff(a_type,type,
    a: $i ).

tff(b_type,type,
    b: $i ).

tff(multiplicative_identity_type,type,
    multiplicative_identity: $i ).

tff(1,plain,
    ^ [A: $i] :
      refl(
        ( product(A,additive_identity,additive_identity)
      <=> product(A,additive_identity,additive_identity) )),
    inference(bind,[status(th)],]) ).

tff(2,plain,
    ( ! [A: $i] : product(A,additive_identity,additive_identity)
  <=> ! [A: $i] : product(A,additive_identity,additive_identity) ),
    inference(quant_intro,[status(thm)],[1]) ).

tff(3,plain,
    ( ! [A: $i] : product(A,additive_identity,additive_identity)
  <=> ! [A: $i] : product(A,additive_identity,additive_identity) ),
    inference(rewrite,[status(thm)],]) ).

tff(4,axiom,
    ! [A: $i] : product(A,additive_identity,additive_identity),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',multiplicative_identity2) ).

tff(5,plain,
    ! [A: $i] : product(A,additive_identity,additive_identity),
    inference(modus_ponens,[status(thm)],[4,3]) ).

tff(6,plain,
    ! [A: $i] : product(A,additive_identity,additive_identity),
    inference(skolemize,[status(sab)],[5]) ).

tff(7,plain,
    ! [A: $i] : product(A,additive_identity,additive_identity),
    inference(modus_ponens,[status(thm)],[6,2]) ).

tff(8,plain,
    ( ~ ! [A: $i] : product(A,additive_identity,additive_identity)
    | product(h(a),additive_identity,additive_identity) ),
    inference(quant_inst,[status(thm)],]) ).

tff(9,plain,
    product(h(a),additive_identity,additive_identity),
    inference(unit_resolution,[status(thm)],[8,7]) ).

tff(10,plain,
    ( ( a != additive_identity )
  <=> ( a != additive_identity ) ),
    inference(rewrite,[status(thm)],]) ).

tff(11,axiom,
    a != additive_identity,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',a_not_additive_identity) ).

tff(12,plain,
    a != additive_identity,
    inference(modus_ponens,[status(thm)],[11,10]) ).

tff(13,plain,
    ^ [A: $i] :
      refl(
        ( ( ( A = additive_identity )
          | product(h(A),A,multiplicative_identity) )
      <=> ( ( A = additive_identity )
          | product(h(A),A,multiplicative_identity) ) )),
    inference(bind,[status(th)],]) ).

tff(14,plain,
    ( ! [A: $i] :
        ( ( A = additive_identity )
        | product(h(A),A,multiplicative_identity) )
  <=> ! [A: $i] :
        ( ( A = additive_identity )
        | product(h(A),A,multiplicative_identity) ) ),
    inference(quant_intro,[status(thm)],[13]) ).

tff(15,plain,
    ( ! [A: $i] :
        ( ( A = additive_identity )
        | product(h(A),A,multiplicative_identity) )
  <=> ! [A: $i] :
        ( ( A = additive_identity )
        | product(h(A),A,multiplicative_identity) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(16,plain,
    ^ [A: $i] :
      rewrite(
        ( ( product(h(A),A,multiplicative_identity)
          | ( A = additive_identity ) )
      <=> ( ( A = additive_identity )
          | product(h(A),A,multiplicative_identity) ) )),
    inference(bind,[status(th)],]) ).

tff(17,plain,
    ( ! [A: $i] :
        ( product(h(A),A,multiplicative_identity)
        | ( A = additive_identity ) )
  <=> ! [A: $i] :
        ( ( A = additive_identity )
        | product(h(A),A,multiplicative_identity) ) ),
    inference(quant_intro,[status(thm)],[16]) ).

tff(18,axiom,
    ! [A: $i] :
      ( product(h(A),A,multiplicative_identity)
      | ( A = additive_identity ) ),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',clause42) ).

tff(19,plain,
    ! [A: $i] :
      ( ( A = additive_identity )
      | product(h(A),A,multiplicative_identity) ),
    inference(modus_ponens,[status(thm)],[18,17]) ).

tff(20,plain,
    ! [A: $i] :
      ( ( A = additive_identity )
      | product(h(A),A,multiplicative_identity) ),
    inference(modus_ponens,[status(thm)],[19,15]) ).

tff(21,plain,
    ! [A: $i] :
      ( ( A = additive_identity )
      | product(h(A),A,multiplicative_identity) ),
    inference(skolemize,[status(sab)],[20]) ).

tff(22,plain,
    ! [A: $i] :
      ( ( A = additive_identity )
      | product(h(A),A,multiplicative_identity) ),
    inference(modus_ponens,[status(thm)],[21,14]) ).

tff(23,plain,
    ( ( ~ ! [A: $i] :
            ( ( A = additive_identity )
            | product(h(A),A,multiplicative_identity) )
      | ( a = additive_identity )
      | product(h(a),a,multiplicative_identity) )
  <=> ( ~ ! [A: $i] :
            ( ( A = additive_identity )
            | product(h(A),A,multiplicative_identity) )
      | ( a = additive_identity )
      | product(h(a),a,multiplicative_identity) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(24,plain,
    ( ~ ! [A: $i] :
          ( ( A = additive_identity )
          | product(h(A),A,multiplicative_identity) )
    | ( a = additive_identity )
    | product(h(a),a,multiplicative_identity) ),
    inference(quant_inst,[status(thm)],]) ).

tff(25,plain,
    ( ~ ! [A: $i] :
          ( ( A = additive_identity )
          | product(h(A),A,multiplicative_identity) )
    | ( a = additive_identity )
    | product(h(a),a,multiplicative_identity) ),
    inference(modus_ponens,[status(thm)],[24,23]) ).

tff(26,plain,
    product(h(a),a,multiplicative_identity),
    inference(unit_resolution,[status(thm)],[25,22,12]) ).

tff(27,plain,
    ^ [A: $i] :
      refl(
        ( product(multiplicative_identity,A,A)
      <=> product(multiplicative_identity,A,A) )),
    inference(bind,[status(th)],]) ).

tff(28,plain,
    ( ! [A: $i] : product(multiplicative_identity,A,A)
  <=> ! [A: $i] : product(multiplicative_identity,A,A) ),
    inference(quant_intro,[status(thm)],[27]) ).

tff(29,plain,
    ( ! [A: $i] : product(multiplicative_identity,A,A)
  <=> ! [A: $i] : product(multiplicative_identity,A,A) ),
    inference(rewrite,[status(thm)],]) ).

tff(30,axiom,
    ! [A: $i] : product(multiplicative_identity,A,A),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',left_multiplicative_identity) ).

tff(31,plain,
    ! [A: $i] : product(multiplicative_identity,A,A),
    inference(modus_ponens,[status(thm)],[30,29]) ).

tff(32,plain,
    ! [A: $i] : product(multiplicative_identity,A,A),
    inference(skolemize,[status(sab)],[31]) ).

tff(33,plain,
    ! [A: $i] : product(multiplicative_identity,A,A),
    inference(modus_ponens,[status(thm)],[32,28]) ).

tff(34,plain,
    ( ~ ! [A: $i] : product(multiplicative_identity,A,A)
    | product(multiplicative_identity,b,b) ),
    inference(quant_inst,[status(thm)],]) ).

tff(35,plain,
    product(multiplicative_identity,b,b),
    inference(unit_resolution,[status(thm)],[34,33]) ).

tff(36,plain,
    ( product(a,b,additive_identity)
  <=> product(a,b,additive_identity) ),
    inference(rewrite,[status(thm)],]) ).

tff(37,axiom,
    product(a,b,additive_identity),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',a_times_b) ).

tff(38,plain,
    product(a,b,additive_identity),
    inference(modus_ponens,[status(thm)],[37,36]) ).

tff(39,plain,
    ^ [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
      refl(
        ( ( product(X,V,W)
          | ~ product(U,Z,W)
          | ~ product(Y,Z,V)
          | ~ product(X,Y,U) )
      <=> ( product(X,V,W)
          | ~ product(U,Z,W)
          | ~ product(Y,Z,V)
          | ~ product(X,Y,U) ) )),
    inference(bind,[status(th)],]) ).

tff(40,plain,
    ( ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
        ( product(X,V,W)
        | ~ product(U,Z,W)
        | ~ product(Y,Z,V)
        | ~ product(X,Y,U) )
  <=> ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
        ( product(X,V,W)
        | ~ product(U,Z,W)
        | ~ product(Y,Z,V)
        | ~ product(X,Y,U) ) ),
    inference(quant_intro,[status(thm)],[39]) ).

tff(41,plain,
    ( ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
        ( product(X,V,W)
        | ~ product(U,Z,W)
        | ~ product(Y,Z,V)
        | ~ product(X,Y,U) )
  <=> ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
        ( product(X,V,W)
        | ~ product(U,Z,W)
        | ~ product(Y,Z,V)
        | ~ product(X,Y,U) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(42,plain,
    ^ [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
      trans(
        monotonicity(
          rewrite(
            ( ( ~ product(X,Y,U)
              | ~ product(Y,Z,V)
              | ~ product(U,Z,W) )
          <=> ( ~ product(U,Z,W)
              | ~ product(Y,Z,V)
              | ~ product(X,Y,U) ) )),
          ( ( ~ product(X,Y,U)
            | ~ product(Y,Z,V)
            | ~ product(U,Z,W)
            | product(X,V,W) )
        <=> ( ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U)
            | product(X,V,W) ) )),
        rewrite(
          ( ( ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U)
            | product(X,V,W) )
        <=> ( product(X,V,W)
            | ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U) ) )),
        ( ( ~ product(X,Y,U)
          | ~ product(Y,Z,V)
          | ~ product(U,Z,W)
          | product(X,V,W) )
      <=> ( product(X,V,W)
          | ~ product(U,Z,W)
          | ~ product(Y,Z,V)
          | ~ product(X,Y,U) ) )),
    inference(bind,[status(th)],]) ).

tff(43,plain,
    ( ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
        ( ~ product(X,Y,U)
        | ~ product(Y,Z,V)
        | ~ product(U,Z,W)
        | product(X,V,W) )
  <=> ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
        ( product(X,V,W)
        | ~ product(U,Z,W)
        | ~ product(Y,Z,V)
        | ~ product(X,Y,U) ) ),
    inference(quant_intro,[status(thm)],[42]) ).

tff(44,axiom,
    ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
      ( ~ product(X,Y,U)
      | ~ product(Y,Z,V)
      | ~ product(U,Z,W)
      | product(X,V,W) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/RNG001-0.ax',associativity_of_multiplication1) ).

tff(45,plain,
    ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
      ( product(X,V,W)
      | ~ product(U,Z,W)
      | ~ product(Y,Z,V)
      | ~ product(X,Y,U) ),
    inference(modus_ponens,[status(thm)],[44,43]) ).

tff(46,plain,
    ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
      ( product(X,V,W)
      | ~ product(U,Z,W)
      | ~ product(Y,Z,V)
      | ~ product(X,Y,U) ),
    inference(modus_ponens,[status(thm)],[45,41]) ).

tff(47,plain,
    ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
      ( product(X,V,W)
      | ~ product(U,Z,W)
      | ~ product(Y,Z,V)
      | ~ product(X,Y,U) ),
    inference(skolemize,[status(sab)],[46]) ).

tff(48,plain,
    ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
      ( product(X,V,W)
      | ~ product(U,Z,W)
      | ~ product(Y,Z,V)
      | ~ product(X,Y,U) ),
    inference(modus_ponens,[status(thm)],[47,40]) ).

tff(49,plain,
    ( ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
            ( product(X,V,W)
            | ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U) )
      | product(h(a),additive_identity,b)
      | ~ product(h(a),a,multiplicative_identity)
      | ~ product(a,b,additive_identity)
      | ~ product(multiplicative_identity,b,b) )
  <=> ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
            ( product(X,V,W)
            | ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U) )
      | product(h(a),additive_identity,b)
      | ~ product(h(a),a,multiplicative_identity)
      | ~ product(a,b,additive_identity)
      | ~ product(multiplicative_identity,b,b) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(50,plain,
    ( ( product(h(a),additive_identity,b)
      | ~ product(multiplicative_identity,b,b)
      | ~ product(a,b,additive_identity)
      | ~ product(h(a),a,multiplicative_identity) )
  <=> ( product(h(a),additive_identity,b)
      | ~ product(h(a),a,multiplicative_identity)
      | ~ product(a,b,additive_identity)
      | ~ product(multiplicative_identity,b,b) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(51,plain,
    ( ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
            ( product(X,V,W)
            | ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U) )
      | product(h(a),additive_identity,b)
      | ~ product(multiplicative_identity,b,b)
      | ~ product(a,b,additive_identity)
      | ~ product(h(a),a,multiplicative_identity) )
  <=> ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
            ( product(X,V,W)
            | ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U) )
      | product(h(a),additive_identity,b)
      | ~ product(h(a),a,multiplicative_identity)
      | ~ product(a,b,additive_identity)
      | ~ product(multiplicative_identity,b,b) ) ),
    inference(monotonicity,[status(thm)],[50]) ).

tff(52,plain,
    ( ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
            ( product(X,V,W)
            | ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U) )
      | product(h(a),additive_identity,b)
      | ~ product(multiplicative_identity,b,b)
      | ~ product(a,b,additive_identity)
      | ~ product(h(a),a,multiplicative_identity) )
  <=> ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
            ( product(X,V,W)
            | ~ product(U,Z,W)
            | ~ product(Y,Z,V)
            | ~ product(X,Y,U) )
      | product(h(a),additive_identity,b)
      | ~ product(h(a),a,multiplicative_identity)
      | ~ product(a,b,additive_identity)
      | ~ product(multiplicative_identity,b,b) ) ),
    inference(transitivity,[status(thm)],[51,49]) ).

tff(53,plain,
    ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
          ( product(X,V,W)
          | ~ product(U,Z,W)
          | ~ product(Y,Z,V)
          | ~ product(X,Y,U) )
    | product(h(a),additive_identity,b)
    | ~ product(multiplicative_identity,b,b)
    | ~ product(a,b,additive_identity)
    | ~ product(h(a),a,multiplicative_identity) ),
    inference(quant_inst,[status(thm)],]) ).

tff(54,plain,
    ( ~ ! [W: $i,V: $i,Z: $i,Y: $i,U: $i,X: $i] :
          ( product(X,V,W)
          | ~ product(U,Z,W)
          | ~ product(Y,Z,V)
          | ~ product(X,Y,U) )
    | product(h(a),additive_identity,b)
    | ~ product(h(a),a,multiplicative_identity)
    | ~ product(a,b,additive_identity)
    | ~ product(multiplicative_identity,b,b) ),
    inference(modus_ponens,[status(thm)],[53,52]) ).

tff(55,plain,
    product(h(a),additive_identity,b),
    inference(unit_resolution,[status(thm)],[54,48,38,35,26]) ).

tff(56,plain,
    ( ( b != additive_identity )
  <=> ( b != additive_identity ) ),
    inference(rewrite,[status(thm)],]) ).

tff(57,axiom,
    b != additive_identity,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_b_is_additive_identity) ).

tff(58,plain,
    b != additive_identity,
    inference(modus_ponens,[status(thm)],[57,56]) ).

tff(59,plain,
    ^ [V: $i,Y: $i,U: $i,X: $i] :
      refl(
        ( ( ~ product(X,Y,V)
          | ~ product(X,Y,U)
          | ( U = V ) )
      <=> ( ~ product(X,Y,V)
          | ~ product(X,Y,U)
          | ( U = V ) ) )),
    inference(bind,[status(th)],]) ).

tff(60,plain,
    ( ! [V: $i,Y: $i,U: $i,X: $i] :
        ( ~ product(X,Y,V)
        | ~ product(X,Y,U)
        | ( U = V ) )
  <=> ! [V: $i,Y: $i,U: $i,X: $i] :
        ( ~ product(X,Y,V)
        | ~ product(X,Y,U)
        | ( U = V ) ) ),
    inference(quant_intro,[status(thm)],[59]) ).

tff(61,plain,
    ( ! [V: $i,Y: $i,U: $i,X: $i] :
        ( ~ product(X,Y,V)
        | ~ product(X,Y,U)
        | ( U = V ) )
  <=> ! [V: $i,Y: $i,U: $i,X: $i] :
        ( ~ product(X,Y,V)
        | ~ product(X,Y,U)
        | ( U = V ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(62,plain,
    ^ [V: $i,Y: $i,U: $i,X: $i] :
      rewrite(
        ( ( ~ product(X,Y,U)
          | ~ product(X,Y,V)
          | ( U = V ) )
      <=> ( ~ product(X,Y,V)
          | ~ product(X,Y,U)
          | ( U = V ) ) )),
    inference(bind,[status(th)],]) ).

tff(63,plain,
    ( ! [V: $i,Y: $i,U: $i,X: $i] :
        ( ~ product(X,Y,U)
        | ~ product(X,Y,V)
        | ( U = V ) )
  <=> ! [V: $i,Y: $i,U: $i,X: $i] :
        ( ~ product(X,Y,V)
        | ~ product(X,Y,U)
        | ( U = V ) ) ),
    inference(quant_intro,[status(thm)],[62]) ).

tff(64,axiom,
    ! [V: $i,Y: $i,U: $i,X: $i] :
      ( ~ product(X,Y,U)
      | ~ product(X,Y,V)
      | ( U = V ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/RNG001-0.ax',multiplication_is_well_defined) ).

tff(65,plain,
    ! [V: $i,Y: $i,U: $i,X: $i] :
      ( ~ product(X,Y,V)
      | ~ product(X,Y,U)
      | ( U = V ) ),
    inference(modus_ponens,[status(thm)],[64,63]) ).

tff(66,plain,
    ! [V: $i,Y: $i,U: $i,X: $i] :
      ( ~ product(X,Y,V)
      | ~ product(X,Y,U)
      | ( U = V ) ),
    inference(modus_ponens,[status(thm)],[65,61]) ).

tff(67,plain,
    ! [V: $i,Y: $i,U: $i,X: $i] :
      ( ~ product(X,Y,V)
      | ~ product(X,Y,U)
      | ( U = V ) ),
    inference(skolemize,[status(sab)],[66]) ).

tff(68,plain,
    ! [V: $i,Y: $i,U: $i,X: $i] :
      ( ~ product(X,Y,V)
      | ~ product(X,Y,U)
      | ( U = V ) ),
    inference(modus_ponens,[status(thm)],[67,60]) ).

tff(69,plain,
    ( ( ~ ! [V: $i,Y: $i,U: $i,X: $i] :
            ( ~ product(X,Y,V)
            | ~ product(X,Y,U)
            | ( U = V ) )
      | ~ product(h(a),additive_identity,additive_identity)
      | ~ product(h(a),additive_identity,b)
      | ( b = additive_identity ) )
  <=> ( ~ ! [V: $i,Y: $i,U: $i,X: $i] :
            ( ~ product(X,Y,V)
            | ~ product(X,Y,U)
            | ( U = V ) )
      | ~ product(h(a),additive_identity,additive_identity)
      | ~ product(h(a),additive_identity,b)
      | ( b = additive_identity ) ) ),
    inference(rewrite,[status(thm)],]) ).

tff(70,plain,
    ( ~ ! [V: $i,Y: $i,U: $i,X: $i] :
          ( ~ product(X,Y,V)
          | ~ product(X,Y,U)
          | ( U = V ) )
    | ~ product(h(a),additive_identity,additive_identity)
    | ~ product(h(a),additive_identity,b)
    | ( b = additive_identity ) ),
    inference(quant_inst,[status(thm)],]) ).

tff(71,plain,
    ( ~ ! [V: $i,Y: $i,U: $i,X: $i] :
          ( ~ product(X,Y,V)
          | ~ product(X,Y,U)
          | ( U = V ) )
    | ~ product(h(a),additive_identity,additive_identity)
    | ~ product(h(a),additive_identity,b)
    | ( b = additive_identity ) ),
    inference(modus_ponens,[status(thm)],[70,69]) ).

tff(72,plain,
    $false,
    inference(unit_resolution,[status(thm)],[71,68,58,55,9]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : RNG041-1 : TPTP v8.1.0. Released v1.0.0.
% 0.07/0.13  % Command  : z3_tptp -proof -model -t:%d -file:%s
% 0.12/0.34  % Computer : n022.cluster.edu
% 0.12/0.34  % Model    : x86_64 x86_64
% 0.12/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.34  % Memory   : 8042.1875MB
% 0.12/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.12/0.34  % CPULimit : 300
% 0.12/0.34  % WCLimit  : 300
% 0.12/0.34  % DateTime : Fri Sep  2 21:57:40 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 0.12/0.35  Z3tptp [4.8.9.0] (c) 2006-20**. Microsoft Corp.
% 0.12/0.35  Usage: tptp [options] [-file:]file
% 0.12/0.35    -h, -?       prints this message.
% 0.12/0.35    -smt2        print SMT-LIB2 benchmark.
% 0.12/0.35    -m, -model   generate model.
% 0.12/0.35    -p, -proof   generate proof.
% 0.12/0.35    -c, -core    generate unsat core of named formulas.
% 0.12/0.35    -st, -statistics display statistics.
% 0.12/0.35    -t:timeout   set timeout (in second).
% 0.12/0.35    -smt2status  display status in smt2 format instead of SZS.
% 0.12/0.35    -check_status check the status produced by Z3 against annotation in benchmark.
% 0.12/0.35    -<param>:<value> configuration parameter and value.
% 0.12/0.35    -o:<output-file> file to place output in.
% 0.84/0.78  % SZS status Unsatisfiable
% 0.84/0.78  % SZS output start Proof
% See solution above
%------------------------------------------------------------------------------