TSTP Solution File: LCL519+1 by Vampire-SAT---4.8

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Vampire-SAT---4.8
% Problem  : LCL519+1 : TPTP v8.1.2. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : vampire --mode casc_sat -m 16384 --cores 7 -t %d %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 Apr 30 13:42:38 EDT 2024

% Result   : Theorem 2.28s 0.70s
% Output   : Refutation 2.28s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   46
%            Number of leaves      :   24
% Syntax   : Number of formulae    :  155 (  80 unt;   0 def)
%            Number of atoms       :  250 (  39 equ)
%            Maximal formula atoms :    4 (   1 avg)
%            Number of connectives :  168 (  73   ~;  67   |;   2   &)
%                                         (  10 <=>;  16  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    7 (   4 avg)
%            Maximal term depth    :    5 (   2 avg)
%            Number of predicates  :   14 (  12 usr;  12 prp; 0-2 aty)
%            Number of functors    :    7 (   7 usr;   2 con; 0-2 aty)
%            Number of variables   :  255 ( 251   !;   4   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(f12745,plain,
    $false,
    inference(resolution,[],[f12709,f105]) ).

fof(f105,plain,
    ~ is_a_theorem(implies(sK1,or(sK0,sK1))),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92,f103,f93,f104,f94]) ).

fof(f94,plain,
    ( r2
    | ~ is_a_theorem(implies(sK1,or(sK0,sK1))) ),
    inference(cnf_transformation,[],[f76]) ).

fof(f76,plain,
    ( r2
    | ~ is_a_theorem(implies(sK1,or(sK0,sK1))) ),
    inference(skolemisation,[status(esa),new_symbols(skolem,[sK0,sK1])],[f68,f75]) ).

fof(f75,plain,
    ( ? [X0,X1] : ~ is_a_theorem(implies(X1,or(X0,X1)))
   => ~ is_a_theorem(implies(sK1,or(sK0,sK1))) ),
    introduced(choice_axiom,[]) ).

fof(f68,plain,
    ( r2
    | ? [X0,X1] : ~ is_a_theorem(implies(X1,or(X0,X1))) ),
    inference(ennf_transformation,[],[f57]) ).

fof(f57,plain,
    ( ! [X0,X1] : is_a_theorem(implies(X1,or(X0,X1)))
   => r2 ),
    inference(unused_predicate_definition_removal,[],[f53]) ).

fof(f53,plain,
    ( r2
  <=> ! [X0,X1] : is_a_theorem(implies(X1,or(X0,X1))) ),
    inference(rectify,[],[f23]) ).

fof(f23,axiom,
    ( r2
  <=> ! [X3,X4] : is_a_theorem(implies(X4,or(X3,X4))) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',r2) ).

fof(f104,plain,
    ! [X0,X1] : equiv(X0,X1) = and(implies(X0,X1),implies(X1,X0)),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92,f103,f93]) ).

fof(f93,plain,
    ! [X0,X1] :
      ( equiv(X0,X1) = and(implies(X0,X1),implies(X1,X0))
      | ~ op_equiv ),
    inference(cnf_transformation,[],[f67]) ).

fof(f67,plain,
    ( ! [X0,X1] : equiv(X0,X1) = and(implies(X0,X1),implies(X1,X0))
    | ~ op_equiv ),
    inference(ennf_transformation,[],[f31]) ).

fof(f31,axiom,
    ( op_equiv
   => ! [X0,X1] : equiv(X0,X1) = and(implies(X0,X1),implies(X1,X0)) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',op_equiv) ).

fof(f103,plain,
    ! [X0,X1] : or(X0,X1) = not(and(not(X0),not(X1))),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92]) ).

fof(f92,plain,
    ! [X0,X1] :
      ( or(X0,X1) = not(and(not(X0),not(X1)))
      | ~ op_or ),
    inference(cnf_transformation,[],[f66]) ).

fof(f66,plain,
    ( ! [X0,X1] : or(X0,X1) = not(and(not(X0),not(X1)))
    | ~ op_or ),
    inference(ennf_transformation,[],[f27]) ).

fof(f27,axiom,
    ( op_or
   => ! [X0,X1] : or(X0,X1) = not(and(not(X0),not(X1))) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',op_or) ).

fof(f102,plain,
    ! [X0,X1] : and(X0,X1) = not(or(not(X0),not(X1))),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91]) ).

fof(f91,plain,
    ! [X0,X1] :
      ( and(X0,X1) = not(or(not(X0),not(X1)))
      | ~ op_and ),
    inference(cnf_transformation,[],[f65]) ).

fof(f65,plain,
    ( ! [X0,X1] : and(X0,X1) = not(or(not(X0),not(X1)))
    | ~ op_and ),
    inference(ennf_transformation,[],[f28]) ).

fof(f28,axiom,
    ( op_and
   => ! [X0,X1] : and(X0,X1) = not(or(not(X0),not(X1))) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',op_and) ).

fof(f101,plain,
    ! [X0,X1] : implies(X0,X1) = not(and(X0,not(X1))),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90]) ).

fof(f90,plain,
    ! [X0,X1] :
      ( implies(X0,X1) = not(and(X0,not(X1)))
      | ~ op_implies_and ),
    inference(cnf_transformation,[],[f64]) ).

fof(f64,plain,
    ( ! [X0,X1] : implies(X0,X1) = not(and(X0,not(X1)))
    | ~ op_implies_and ),
    inference(ennf_transformation,[],[f29]) ).

fof(f29,axiom,
    ( op_implies_and
   => ! [X0,X1] : implies(X0,X1) = not(and(X0,not(X1))) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',op_implies_and) ).

fof(f100,plain,
    ! [X0,X1] : implies(X0,X1) = or(not(X0),X1),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89]) ).

fof(f89,plain,
    ! [X0,X1] :
      ( implies(X0,X1) = or(not(X0),X1)
      | ~ op_implies_or ),
    inference(cnf_transformation,[],[f63]) ).

fof(f63,plain,
    ( ! [X0,X1] : implies(X0,X1) = or(not(X0),X1)
    | ~ op_implies_or ),
    inference(ennf_transformation,[],[f30]) ).

fof(f30,axiom,
    ( op_implies_or
   => ! [X0,X1] : implies(X0,X1) = or(not(X0),X1) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',op_implies_or) ).

fof(f88,plain,
    op_equiv,
    inference(cnf_transformation,[],[f34]) ).

fof(f34,axiom,
    op_equiv,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rosser_op_equiv) ).

fof(f87,plain,
    op_equiv,
    inference(cnf_transformation,[],[f42]) ).

fof(f42,axiom,
    op_equiv,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',principia_op_equiv) ).

fof(f86,plain,
    op_or,
    inference(cnf_transformation,[],[f32]) ).

fof(f32,axiom,
    op_or,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rosser_op_or) ).

fof(f85,plain,
    op_implies_and,
    inference(cnf_transformation,[],[f33]) ).

fof(f33,axiom,
    op_implies_and,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rosser_op_implies_and) ).

fof(f84,plain,
    op_and,
    inference(cnf_transformation,[],[f41]) ).

fof(f41,axiom,
    op_and,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',principia_op_and) ).

fof(f83,plain,
    op_implies_or,
    inference(cnf_transformation,[],[f40]) ).

fof(f40,axiom,
    op_implies_or,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',principia_op_implies_or) ).

fof(f82,plain,
    modus_ponens,
    inference(cnf_transformation,[],[f35]) ).

fof(f35,axiom,
    modus_ponens,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rosser_modus_ponens) ).

fof(f81,plain,
    substitution_of_equivalents,
    inference(cnf_transformation,[],[f39]) ).

fof(f39,axiom,
    substitution_of_equivalents,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',substitution_of_equivalents) ).

fof(f80,plain,
    kn3,
    inference(cnf_transformation,[],[f38]) ).

fof(f38,axiom,
    kn3,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rosser_kn3) ).

fof(f79,plain,
    kn2,
    inference(cnf_transformation,[],[f37]) ).

fof(f37,axiom,
    kn2,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rosser_kn2) ).

fof(f78,plain,
    kn1,
    inference(cnf_transformation,[],[f36]) ).

fof(f36,axiom,
    kn1,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',rosser_kn1) ).

fof(f77,plain,
    ~ r2,
    inference(cnf_transformation,[],[f45]) ).

fof(f45,plain,
    ~ r2,
    inference(flattening,[],[f44]) ).

fof(f44,negated_conjecture,
    ~ r2,
    inference(negated_conjecture,[],[f43]) ).

fof(f43,conjecture,
    r2,
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',principia_r2) ).

fof(f12709,plain,
    ! [X0,X1] : is_a_theorem(implies(X0,or(X1,X0))),
    inference(resolution,[],[f12652,f9771]) ).

fof(f9771,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(or(X1,not(X0)))
      | is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[],[f9157,f109]) ).

fof(f109,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(implies(X0,X1))
      | is_a_theorem(X1)
      | ~ is_a_theorem(X0) ),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92,f103,f93,f104,f94,f105,f95,f106,f96,f107,f97,f108,f98]) ).

fof(f98,plain,
    ! [X0,X1] :
      ( is_a_theorem(X1)
      | ~ is_a_theorem(implies(X0,X1))
      | ~ is_a_theorem(X0)
      | ~ modus_ponens ),
    inference(cnf_transformation,[],[f73]) ).

fof(f73,plain,
    ( ! [X0,X1] :
        ( is_a_theorem(X1)
        | ~ is_a_theorem(implies(X0,X1))
        | ~ is_a_theorem(X0) )
    | ~ modus_ponens ),
    inference(flattening,[],[f72]) ).

fof(f72,plain,
    ( ! [X0,X1] :
        ( is_a_theorem(X1)
        | ~ is_a_theorem(implies(X0,X1))
        | ~ is_a_theorem(X0) )
    | ~ modus_ponens ),
    inference(ennf_transformation,[],[f62]) ).

fof(f62,plain,
    ( modus_ponens
   => ! [X0,X1] :
        ( ( is_a_theorem(implies(X0,X1))
          & is_a_theorem(X0) )
       => is_a_theorem(X1) ) ),
    inference(unused_predicate_definition_removal,[],[f1]) ).

fof(f1,axiom,
    ( modus_ponens
  <=> ! [X0,X1] :
        ( ( is_a_theorem(implies(X0,X1))
          & is_a_theorem(X0) )
       => is_a_theorem(X1) ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',modus_ponens) ).

fof(f108,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(equiv(X0,X1))
      | X0 = X1 ),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92,f103,f93,f104,f94,f105,f95,f106,f96,f107,f97]) ).

fof(f97,plain,
    ! [X0,X1] :
      ( X0 = X1
      | ~ is_a_theorem(equiv(X0,X1))
      | ~ substitution_of_equivalents ),
    inference(cnf_transformation,[],[f71]) ).

fof(f71,plain,
    ( ! [X0,X1] :
        ( X0 = X1
        | ~ is_a_theorem(equiv(X0,X1)) )
    | ~ substitution_of_equivalents ),
    inference(ennf_transformation,[],[f61]) ).

fof(f61,plain,
    ( substitution_of_equivalents
   => ! [X0,X1] :
        ( is_a_theorem(equiv(X0,X1))
       => X0 = X1 ) ),
    inference(unused_predicate_definition_removal,[],[f2]) ).

fof(f2,axiom,
    ( substitution_of_equivalents
  <=> ! [X0,X1] :
        ( is_a_theorem(equiv(X0,X1))
       => X0 = X1 ) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',substitution_of_equivalents) ).

fof(f107,plain,
    ! [X0,X1] : is_a_theorem(implies(and(X0,X1),X0)),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92,f103,f93,f104,f94,f105,f95,f106,f96]) ).

fof(f96,plain,
    ! [X0,X1] :
      ( is_a_theorem(implies(and(X0,X1),X0))
      | ~ kn2 ),
    inference(cnf_transformation,[],[f70]) ).

fof(f70,plain,
    ( ! [X0,X1] : is_a_theorem(implies(and(X0,X1),X0))
    | ~ kn2 ),
    inference(ennf_transformation,[],[f59]) ).

fof(f59,plain,
    ( kn2
   => ! [X0,X1] : is_a_theorem(implies(and(X0,X1),X0)) ),
    inference(unused_predicate_definition_removal,[],[f55]) ).

fof(f55,plain,
    ( kn2
  <=> ! [X0,X1] : is_a_theorem(implies(and(X0,X1),X0)) ),
    inference(rectify,[],[f17]) ).

fof(f17,axiom,
    ( kn2
  <=> ! [X3,X4] : is_a_theorem(implies(and(X3,X4),X3)) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',kn2) ).

fof(f106,plain,
    ! [X0] : is_a_theorem(implies(X0,and(X0,X0))),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92,f103,f93,f104,f94,f105,f95]) ).

fof(f95,plain,
    ! [X0] :
      ( is_a_theorem(implies(X0,and(X0,X0)))
      | ~ kn1 ),
    inference(cnf_transformation,[],[f69]) ).

fof(f69,plain,
    ( ! [X0] : is_a_theorem(implies(X0,and(X0,X0)))
    | ~ kn1 ),
    inference(ennf_transformation,[],[f60]) ).

fof(f60,plain,
    ( kn1
   => ! [X0] : is_a_theorem(implies(X0,and(X0,X0))) ),
    inference(unused_predicate_definition_removal,[],[f54]) ).

fof(f54,plain,
    ( kn1
  <=> ! [X0] : is_a_theorem(implies(X0,and(X0,X0))) ),
    inference(rectify,[],[f16]) ).

fof(f16,axiom,
    ( kn1
  <=> ! [X3] : is_a_theorem(implies(X3,and(X3,X3))) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',kn1) ).

fof(f9157,plain,
    ! [X0,X1] : is_a_theorem(implies(or(X1,not(X0)),implies(X0,X1))),
    inference(forward_demodulation,[],[f9135,f395]) ).

fof(f395,plain,
    ! [X2,X0,X1] : implies(or(X0,not(X1)),X2) = or(and(not(X0),X1),X2),
    inference(superposition,[],[f120,f127]) ).

fof(f127,plain,
    ! [X0,X1] : or(X0,X1) = implies(not(X0),X1),
    inference(superposition,[],[f103,f101]) ).

fof(f120,plain,
    ! [X2,X0,X1] : implies(implies(X0,not(X1)),X2) = or(and(X0,X1),X2),
    inference(superposition,[],[f100,f116]) ).

fof(f116,plain,
    ! [X0,X1] : and(X0,X1) = not(implies(X0,not(X1))),
    inference(forward_demodulation,[],[f102,f100]) ).

fof(f9135,plain,
    ! [X0,X1] : is_a_theorem(or(and(not(X1),X0),implies(X0,X1))),
    inference(superposition,[],[f4756,f101]) ).

fof(f4756,plain,
    ! [X0,X1] : is_a_theorem(or(and(X0,X1),not(and(X1,X0)))),
    inference(resolution,[],[f4225,f169]) ).

fof(f169,plain,
    ! [X2,X0,X1] : is_a_theorem(implies(implies(X0,X1),or(and(X1,X2),not(and(X2,X0))))),
    inference(forward_demodulation,[],[f110,f127]) ).

fof(f110,plain,
    ! [X2,X0,X1] : is_a_theorem(implies(implies(X0,X1),implies(not(and(X1,X2)),not(and(X2,X0))))),
    inference(global_subsumption,[],[f77,f78,f79,f80,f81,f82,f83,f84,f85,f86,f87,f88,f89,f100,f90,f101,f91,f102,f92,f103,f93,f104,f94,f105,f95,f106,f96,f107,f97,f108,f98,f109,f99]) ).

fof(f99,plain,
    ! [X2,X0,X1] :
      ( is_a_theorem(implies(implies(X0,X1),implies(not(and(X1,X2)),not(and(X2,X0)))))
      | ~ kn3 ),
    inference(cnf_transformation,[],[f74]) ).

fof(f74,plain,
    ( ! [X0,X1,X2] : is_a_theorem(implies(implies(X0,X1),implies(not(and(X1,X2)),not(and(X2,X0)))))
    | ~ kn3 ),
    inference(ennf_transformation,[],[f58]) ).

fof(f58,plain,
    ( kn3
   => ! [X0,X1,X2] : is_a_theorem(implies(implies(X0,X1),implies(not(and(X1,X2)),not(and(X2,X0))))) ),
    inference(unused_predicate_definition_removal,[],[f56]) ).

fof(f56,plain,
    ( kn3
  <=> ! [X0,X1,X2] : is_a_theorem(implies(implies(X0,X1),implies(not(and(X1,X2)),not(and(X2,X0))))) ),
    inference(rectify,[],[f18]) ).

fof(f18,axiom,
    ( kn3
  <=> ! [X3,X4,X5] : is_a_theorem(implies(implies(X3,X4),implies(not(and(X4,X5)),not(and(X5,X3))))) ),
    file('/export/starexec/sandbox/benchmark/theBenchmark.p',kn3) ).

fof(f4225,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(implies(implies(X1,X1),X0))
      | is_a_theorem(X0) ),
    inference(resolution,[],[f4197,f158]) ).

fof(f158,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(not(not(X0)))
      | is_a_theorem(X1)
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(superposition,[],[f139,f100]) ).

fof(f139,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(or(X0,X1))
      | is_a_theorem(X1)
      | ~ is_a_theorem(not(X0)) ),
    inference(superposition,[],[f109,f127]) ).

fof(f4197,plain,
    ! [X0] : is_a_theorem(not(not(implies(X0,X0)))),
    inference(resolution,[],[f3291,f211]) ).

fof(f211,plain,
    ! [X0,X1] : is_a_theorem(implies(equiv(X0,X1),not(not(implies(X0,X1))))),
    inference(superposition,[],[f195,f104]) ).

fof(f195,plain,
    ! [X0,X1] : is_a_theorem(implies(and(X0,X1),not(not(X0)))),
    inference(superposition,[],[f107,f184]) ).

fof(f184,plain,
    ! [X0,X1] : and(X0,X1) = and(not(not(X0)),X1),
    inference(forward_demodulation,[],[f174,f116]) ).

fof(f174,plain,
    ! [X0,X1] : not(implies(X0,not(X1))) = and(not(not(X0)),X1),
    inference(superposition,[],[f140,f100]) ).

fof(f140,plain,
    ! [X0,X1] : and(not(X0),X1) = not(or(X0,not(X1))),
    inference(superposition,[],[f116,f127]) ).

fof(f3291,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(implies(equiv(X1,X1),X0))
      | is_a_theorem(X0) ),
    inference(resolution,[],[f3263,f158]) ).

fof(f3263,plain,
    ! [X0] : is_a_theorem(not(not(equiv(X0,X0)))),
    inference(resolution,[],[f3251,f2228]) ).

fof(f2228,plain,
    ! [X0] :
      ( ~ is_a_theorem(or(X0,X0))
      | is_a_theorem(not(not(X0))) ),
    inference(resolution,[],[f2191,f568]) ).

fof(f568,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(implies(X0,X1))
      | is_a_theorem(not(not(X1)))
      | ~ is_a_theorem(X0) ),
    inference(resolution,[],[f438,f109]) ).

fof(f438,plain,
    ! [X0,X1] :
      ( is_a_theorem(implies(X0,not(not(X1))))
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(superposition,[],[f271,f101]) ).

fof(f271,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(not(and(X0,X1)))
      | is_a_theorem(implies(X0,not(X1))) ),
    inference(superposition,[],[f257,f116]) ).

fof(f257,plain,
    ! [X0] :
      ( ~ is_a_theorem(not(not(X0)))
      | is_a_theorem(X0) ),
    inference(resolution,[],[f192,f112]) ).

fof(f112,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(and(X0,X1))
      | is_a_theorem(X0) ),
    inference(resolution,[],[f109,f107]) ).

fof(f192,plain,
    ! [X0] :
      ( is_a_theorem(and(X0,not(not(X0))))
      | ~ is_a_theorem(not(not(X0))) ),
    inference(superposition,[],[f111,f184]) ).

fof(f111,plain,
    ! [X0] :
      ( is_a_theorem(and(X0,X0))
      | ~ is_a_theorem(X0) ),
    inference(resolution,[],[f109,f106]) ).

fof(f2191,plain,
    ! [X0] : is_a_theorem(implies(or(X0,X0),X0)),
    inference(forward_demodulation,[],[f2175,f100]) ).

fof(f2175,plain,
    ! [X0] : is_a_theorem(or(not(or(X0,X0)),X0)),
    inference(resolution,[],[f2165,f1955]) ).

fof(f1955,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(or(or(X1,X1),X0))
      | is_a_theorem(or(X0,X1)) ),
    inference(forward_demodulation,[],[f1954,f127]) ).

fof(f1954,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(or(implies(not(X1),X1),X0))
      | is_a_theorem(or(X0,X1)) ),
    inference(forward_demodulation,[],[f1924,f115]) ).

fof(f115,plain,
    ! [X2,X0,X1] : implies(and(X0,not(X1)),X2) = or(implies(X0,X1),X2),
    inference(superposition,[],[f100,f101]) ).

fof(f1924,plain,
    ! [X0,X1] :
      ( is_a_theorem(or(X0,X1))
      | ~ is_a_theorem(implies(and(not(X1),not(X1)),X0)) ),
    inference(resolution,[],[f1601,f138]) ).

fof(f138,plain,
    ! [X0] : is_a_theorem(or(X0,and(not(X0),not(X0)))),
    inference(superposition,[],[f106,f127]) ).

fof(f1601,plain,
    ! [X2,X0,X1] :
      ( ~ is_a_theorem(or(X0,X1))
      | is_a_theorem(or(X2,X0))
      | ~ is_a_theorem(implies(X1,X2)) ),
    inference(resolution,[],[f1381,f109]) ).

fof(f1381,plain,
    ! [X2,X0,X1] :
      ( is_a_theorem(implies(implies(X2,X0),or(X0,X1)))
      | ~ is_a_theorem(or(X1,X2)) ),
    inference(forward_demodulation,[],[f1377,f132]) ).

fof(f132,plain,
    ! [X2,X0,X1] : or(and(X0,not(X1)),X2) = implies(implies(X0,X1),X2),
    inference(forward_demodulation,[],[f121,f101]) ).

fof(f121,plain,
    ! [X2,X0,X1] : or(and(X0,not(X1)),X2) = not(and(implies(X0,X1),not(X2))),
    inference(superposition,[],[f103,f101]) ).

fof(f1377,plain,
    ! [X2,X0,X1] :
      ( is_a_theorem(or(and(X2,not(X0)),or(X0,X1)))
      | ~ is_a_theorem(or(X1,X2)) ),
    inference(superposition,[],[f712,f127]) ).

fof(f712,plain,
    ! [X2,X0,X1] :
      ( is_a_theorem(or(and(X0,X1),implies(X1,X2)))
      | ~ is_a_theorem(or(X2,X0)) ),
    inference(resolution,[],[f254,f109]) ).

fof(f254,plain,
    ! [X2,X0,X1] : is_a_theorem(implies(or(X1,X2),or(and(X2,X0),implies(X0,X1)))),
    inference(forward_demodulation,[],[f251,f127]) ).

fof(f251,plain,
    ! [X2,X0,X1] : is_a_theorem(implies(implies(not(X1),X2),or(and(X2,X0),implies(X0,X1)))),
    inference(superposition,[],[f169,f101]) ).

fof(f2165,plain,
    ! [X0] : is_a_theorem(or(X0,not(X0))),
    inference(superposition,[],[f2140,f127]) ).

fof(f2140,plain,
    ! [X0] : is_a_theorem(implies(X0,X0)),
    inference(forward_demodulation,[],[f2124,f100]) ).

fof(f2124,plain,
    ! [X0] : is_a_theorem(or(not(X0),X0)),
    inference(resolution,[],[f1955,f352]) ).

fof(f352,plain,
    ! [X0,X1] : is_a_theorem(or(or(X0,X1),not(X0))),
    inference(superposition,[],[f330,f127]) ).

fof(f330,plain,
    ! [X0,X1] : is_a_theorem(or(implies(X0,X1),X0)),
    inference(superposition,[],[f107,f115]) ).

fof(f3251,plain,
    ! [X0,X1] : is_a_theorem(or(equiv(X0,X0),X1)),
    inference(subsumption_resolution,[],[f3246,f2140]) ).

fof(f3246,plain,
    ! [X0,X1] :
      ( is_a_theorem(or(equiv(X0,X0),X1))
      | ~ is_a_theorem(implies(X0,X0)) ),
    inference(superposition,[],[f2421,f104]) ).

fof(f2421,plain,
    ! [X0,X1] :
      ( is_a_theorem(or(and(X0,X0),X1))
      | ~ is_a_theorem(X0) ),
    inference(resolution,[],[f2375,f659]) ).

fof(f659,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(implies(and(X0,X0),X1))
      | is_a_theorem(X1)
      | ~ is_a_theorem(X0) ),
    inference(resolution,[],[f634,f158]) ).

fof(f634,plain,
    ! [X0] :
      ( is_a_theorem(not(not(and(X0,X0))))
      | ~ is_a_theorem(X0) ),
    inference(resolution,[],[f568,f106]) ).

fof(f2375,plain,
    ! [X0,X1] : is_a_theorem(implies(X0,or(X0,X1))),
    inference(forward_demodulation,[],[f2343,f100]) ).

fof(f2343,plain,
    ! [X0,X1] : is_a_theorem(or(not(X0),or(X0,X1))),
    inference(resolution,[],[f2190,f352]) ).

fof(f2190,plain,
    ! [X0,X1] :
      ( ~ is_a_theorem(or(X1,X0))
      | is_a_theorem(or(X0,X1)) ),
    inference(forward_demodulation,[],[f2172,f127]) ).

fof(f2172,plain,
    ! [X0,X1] :
      ( is_a_theorem(or(X0,X1))
      | ~ is_a_theorem(implies(not(X1),X0)) ),
    inference(resolution,[],[f2165,f1601]) ).

fof(f12652,plain,
    ! [X0,X1] : is_a_theorem(or(or(X0,X1),not(X1))),
    inference(superposition,[],[f12594,f131]) ).

fof(f131,plain,
    ! [X2,X0,X1] : implies(and(not(X0),not(X1)),X2) = or(or(X0,X1),X2),
    inference(superposition,[],[f100,f103]) ).

fof(f12594,plain,
    ! [X0,X1] : is_a_theorem(implies(and(not(X0),X1),X1)),
    inference(forward_demodulation,[],[f12555,f606]) ).

fof(f606,plain,
    ! [X2,X0,X1] : or(or(X0,not(X1)),X2) = implies(and(not(X0),X1),X2),
    inference(superposition,[],[f134,f127]) ).

fof(f134,plain,
    ! [X2,X0,X1] : or(implies(X0,not(X1)),X2) = implies(and(X0,X1),X2),
    inference(forward_demodulation,[],[f123,f101]) ).

fof(f123,plain,
    ! [X2,X0,X1] : or(implies(X0,not(X1)),X2) = not(and(and(X0,X1),not(X2))),
    inference(superposition,[],[f103,f116]) ).

fof(f12555,plain,
    ! [X0,X1] : is_a_theorem(or(or(X0,not(X1)),X1)),
    inference(resolution,[],[f2396,f9351]) ).

fof(f9351,plain,
    ! [X0,X1] : is_a_theorem(implies(implies(X1,X0),or(X0,not(X1)))),
    inference(forward_demodulation,[],[f9337,f132]) ).

fof(f9337,plain,
    ! [X0,X1] : is_a_theorem(or(and(X1,not(X0)),or(X0,not(X1)))),
    inference(superposition,[],[f6533,f127]) ).

fof(f6533,plain,
    ! [X0,X1] : is_a_theorem(or(and(X0,X1),implies(X1,not(X0)))),
    inference(resolution,[],[f713,f4225]) ).

fof(f713,plain,
    ! [X2,X0,X1] : is_a_theorem(implies(implies(X0,X1),or(and(X1,X2),implies(X2,not(X0))))),
    inference(superposition,[],[f254,f100]) ).

fof(f2396,plain,
    ! [X2,X0,X1] :
      ( ~ is_a_theorem(implies(implies(X1,X2),X0))
      | is_a_theorem(or(X0,X1)) ),
    inference(resolution,[],[f2330,f1601]) ).

fof(f2330,plain,
    ! [X0,X1] : is_a_theorem(or(X0,implies(X0,X1))),
    inference(resolution,[],[f2190,f330]) ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.13  % Problem    : LCL519+1 : TPTP v8.1.2. Released v3.3.0.
% 0.03/0.15  % Command    : vampire --mode casc_sat -m 16384 --cores 7 -t %d %s
% 0.14/0.36  % Computer : n022.cluster.edu
% 0.14/0.36  % Model    : x86_64 x86_64
% 0.14/0.36  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.36  % Memory   : 8042.1875MB
% 0.14/0.36  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.14/0.36  % CPULimit   : 300
% 0.14/0.36  % WCLimit    : 300
% 0.14/0.36  % DateTime   : Mon Apr 29 22:49:14 EDT 2024
% 0.14/0.36  % CPUTime    : 
% 0.14/0.37  % (28420)Running in auto input_syntax mode. Trying TPTP
% 0.23/0.38  % (28424)fmb+10_1_bce=on:fmbsr=1.5:nm=32_533 on theBenchmark for (533ds/0Mi)
% 0.23/0.38  TRYING [1]
% 0.23/0.38  % (28423)WARNING: value z3 for option sas not known
% 0.23/0.38  TRYING [2]
% 0.23/0.39  % (28425)ott+10_10:1_add=off:afr=on:amm=off:anc=all:bd=off:bs=on:fsr=off:irw=on:lma=on:msp=off:nm=4:nwc=4.0:sac=on:sp=reverse_frequency_531 on theBenchmark for (531ds/0Mi)
% 0.23/0.39  % (28426)ott-10_8_av=off:bd=preordered:bs=on:fsd=off:fsr=off:fde=unused:irw=on:lcm=predicate:lma=on:nm=4:nwc=1.7:sp=frequency_522 on theBenchmark for (522ds/0Mi)
% 0.23/0.39  % (28422)fmb+10_1_bce=on:fmbdsb=on:fmbes=contour:fmbswr=3:fde=none:nm=0_793 on theBenchmark for (793ds/0Mi)
% 0.23/0.39  % (28421)fmb+10_1_bce=on:fmbas=function:fmbsr=1.2:fde=unused:nm=0_846 on theBenchmark for (846ds/0Mi)
% 0.23/0.39  % (28427)ott+1_64_av=off:bd=off:bce=on:fsd=off:fde=unused:gsp=on:irw=on:lcm=predicate:lma=on:nm=2:nwc=1.1:sims=off:urr=on_497 on theBenchmark for (497ds/0Mi)
% 0.23/0.39  % (28423)dis+2_11_add=large:afr=on:amm=off:bd=off:bce=on:fsd=off:fde=none:gs=on:gsaa=full_model:gsem=off:irw=on:msp=off:nm=4:nwc=1.3:sas=z3:sims=off:sac=on:sp=reverse_arity_569 on theBenchmark for (569ds/0Mi)
% 0.23/0.39  TRYING [3]
% 0.23/0.39  TRYING [1]
% 0.23/0.39  TRYING [2]
% 0.23/0.40  TRYING [4]
% 0.23/0.40  TRYING [3]
% 0.23/0.43  TRYING [4]
% 0.23/0.48  TRYING [5]
% 2.28/0.70  % (28423)First to succeed.
% 2.28/0.70  % (28423)Refutation found. Thanks to Tanya!
% 2.28/0.70  % SZS status Theorem for theBenchmark
% 2.28/0.70  % SZS output start Proof for theBenchmark
% See solution above
% 2.28/0.71  % (28423)------------------------------
% 2.28/0.71  % (28423)Version: Vampire 4.8 (commit 8e9376e55 on 2024-01-18 13:49:33 +0100)
% 2.28/0.71  % (28423)Termination reason: Refutation
% 2.28/0.71  
% 2.28/0.71  % (28423)Memory used [KB]: 5952
% 2.28/0.71  % (28423)Time elapsed: 0.320 s
% 2.28/0.71  % (28423)Instructions burned: 969 (million)
% 2.28/0.71  % (28423)------------------------------
% 2.28/0.71  % (28423)------------------------------
% 2.28/0.71  % (28420)Success in time 0.326 s
%------------------------------------------------------------------------------