TSTP Solution File: LCL161-1 by Drodi---3.5.1

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Drodi---3.5.1
% Problem  : LCL161-1 : TPTP v8.1.2. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s

% Computer : n023.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 : Wed May 31 12:18:26 EDT 2023

% Result   : Unsatisfiable 0.14s 0.34s
% Output   : CNFRefutation 0.14s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :    8
%            Number of leaves      :    9
% Syntax   : Number of formulae    :   31 (  31 unt;   0 def)
%            Number of atoms       :   31 (  30 equ)
%            Maximal formula atoms :    1 (   1 avg)
%            Number of connectives :    4 (   4   ~;   0   |;   0   &)
%                                         (   0 <=>;   0  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    3 (   2 avg)
%            Maximal term depth    :    4 (   2 avg)
%            Number of predicates  :    2 (   0 usr;   1 prp; 0-2 aty)
%            Number of functors    :    7 (   7 usr;   3 con; 0-2 aty)
%            Number of variables   :   36 (;  36   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ! [X] : not(X) = xor(X,truth),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f2,axiom,
    ! [X] : xor(X,falsehood) = X,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f4,axiom,
    ! [X] : and_star(X,truth) = X,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f7,axiom,
    ! [X,Y] : xor(X,xor(truth,Y)) = xor(xor(X,truth),Y),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f9,axiom,
    ! [X,Y] : xor(X,Y) = xor(Y,X),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f11,axiom,
    ! [X,Y] : and_star(X,Y) = and_star(Y,X),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f12,axiom,
    not(truth) = falsehood,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f13,axiom,
    ! [X,Y] : implies(X,Y) = xor(truth,and_star(X,xor(truth,Y))),
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f14,negated_conjecture,
    implies(truth,x) != x,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).

fof(f15,plain,
    ! [X0] : not(X0) = xor(X0,truth),
    inference(cnf_transformation,[status(esa)],[f1]) ).

fof(f16,plain,
    ! [X0] : xor(X0,falsehood) = X0,
    inference(cnf_transformation,[status(esa)],[f2]) ).

fof(f18,plain,
    ! [X0] : and_star(X0,truth) = X0,
    inference(cnf_transformation,[status(esa)],[f4]) ).

fof(f21,plain,
    ! [X0,X1] : xor(X0,xor(truth,X1)) = xor(xor(X0,truth),X1),
    inference(cnf_transformation,[status(esa)],[f7]) ).

fof(f23,plain,
    ! [X0,X1] : xor(X0,X1) = xor(X1,X0),
    inference(cnf_transformation,[status(esa)],[f9]) ).

fof(f25,plain,
    ! [X0,X1] : and_star(X0,X1) = and_star(X1,X0),
    inference(cnf_transformation,[status(esa)],[f11]) ).

fof(f26,plain,
    not(truth) = falsehood,
    inference(cnf_transformation,[status(esa)],[f12]) ).

fof(f27,plain,
    ! [X0,X1] : implies(X0,X1) = xor(truth,and_star(X0,xor(truth,X1))),
    inference(cnf_transformation,[status(esa)],[f13]) ).

fof(f28,plain,
    implies(truth,x) != x,
    inference(cnf_transformation,[status(esa)],[f14]) ).

fof(f29,plain,
    ! [X0,X1] : xor(X0,xor(truth,X1)) = xor(not(X0),X1),
    inference(forward_demodulation,[status(thm)],[f15,f21]) ).

fof(f34,plain,
    ! [X0] : not(X0) = xor(truth,X0),
    inference(paramodulation,[status(thm)],[f15,f23]) ).

fof(f42,plain,
    ! [X0,X1] : implies(X0,X1) = not(and_star(X0,xor(truth,X1))),
    inference(backward_demodulation,[status(thm)],[f34,f27]) ).

fof(f43,plain,
    ! [X0,X1] : implies(X0,X1) = not(and_star(X0,not(X1))),
    inference(forward_demodulation,[status(thm)],[f34,f42]) ).

fof(f48,plain,
    ! [X0,X1] : xor(X0,not(X1)) = xor(not(X0),X1),
    inference(backward_demodulation,[status(thm)],[f34,f29]) ).

fof(f58,plain,
    ! [X0] : X0 = and_star(truth,X0),
    inference(paramodulation,[status(thm)],[f18,f25]) ).

fof(f108,plain,
    ! [X0] : implies(truth,X0) = not(not(X0)),
    inference(paramodulation,[status(thm)],[f58,f43]) ).

fof(f117,plain,
    not(not(x)) != x,
    inference(backward_demodulation,[status(thm)],[f108,f28]) ).

fof(f120,plain,
    ! [X0] : xor(X0,not(truth)) = not(not(X0)),
    inference(paramodulation,[status(thm)],[f15,f48]) ).

fof(f121,plain,
    ! [X0] : xor(X0,falsehood) = not(not(X0)),
    inference(forward_demodulation,[status(thm)],[f26,f120]) ).

fof(f122,plain,
    ! [X0] : X0 = not(not(X0)),
    inference(forward_demodulation,[status(thm)],[f16,f121]) ).

fof(f144,plain,
    x != x,
    inference(backward_demodulation,[status(thm)],[f122,f117]) ).

fof(f145,plain,
    $false,
    inference(trivial_equality_resolution,[status(esa)],[f144]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.09/0.11  % Problem  : LCL161-1 : TPTP v8.1.2. Released v1.0.0.
% 0.09/0.11  % Command  : drodi -learnfrom(drodi.lrn) -timeout(%d) %s
% 0.14/0.31  % Computer : n023.cluster.edu
% 0.14/0.31  % Model    : x86_64 x86_64
% 0.14/0.31  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.31  % Memory   : 8042.1875MB
% 0.14/0.31  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.31  % CPULimit : 300
% 0.14/0.31  % WCLimit  : 300
% 0.14/0.31  % DateTime : Tue May 30 10:05:08 EDT 2023
% 0.14/0.31  % CPUTime  : 
% 0.14/0.32  % Drodi V3.5.1
% 0.14/0.34  % Refutation found
% 0.14/0.34  % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.14/0.34  % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.15/0.56  % Elapsed time: 0.028666 seconds
% 0.15/0.56  % CPU time: 0.015710 seconds
% 0.15/0.56  % Memory used: 325.228 KB
%------------------------------------------------------------------------------