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iProver---3.9.4.THM-CRf.s

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%------------------------------------------------------------------------------
% File     : iProver---3.9.4
% Problem  : LCL497+1 : TPTP v9.3.1. Bugfixed v9.2.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM

% Computer : n020.cluster.edu
% Model    : x86_64 x86_64
% CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory   : 8046.5625MB
% OS       : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit  : 300s
% DateTime : Fri Sep 25 02:06:46 PM UTC 2026

% Result   : Theorem 106.44s 21.66s
% Output   : CNFRefutation 106.44s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   24
%            Number of leaves      :   20
% Syntax   : Number of formulae    :  113 (  42 unt;   0 def)
%            Number of atoms       :  208 (  25 equ)
%            Maximal formula atoms :    4 (   1 avg)
%            Number of connectives :  176 (  81   ~;  76   |;   2   &)
%                                         (   7 <=>;  10  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    9 (   4 avg)
%            Maximal term depth    :    4 (   2 avg)
%            Number of types       :    1 (   0 usr)
%            Number of type conns  :    0 (   0   >;   0   *;   0   +;   0  <<)
%            Number of predicates  :   11 (   9 usr;   9 prp; 0-2 aty)
%            Number of functors    :    5 (   5 usr;   2 con; 0-2 aty)
%            Number of variables   :  189 (   0 sgn 187   !;   2   ?; 123   :)

% Comments : 
%------------------------------------------------------------------------------
fof(f1,axiom,
    ( modus_ponens
  <=> ! [X0,X1] :
        ( ( is_a_theorem(implies(X0,X1))
          & is_a_theorem(X0) )
       => is_a_theorem(X1) ) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+0.ax',modus_ponens) ).

fof(f20,axiom,
    ( cn2
  <=> ! [X0,X1] : is_a_theorem(implies(X0,implies(not(X0),X1))) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+0.ax',cn2) ).

fof(f22,axiom,
    ( r1
  <=> ! [X0] : is_a_theorem(implies(or(X0,X0),X0)) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+0.ax',r1) ).

fof(f23,axiom,
    ( r2
  <=> ! [X0,X1] : is_a_theorem(implies(X1,or(X0,X1))) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+0.ax',r2) ).

fof(f24,axiom,
    ( r3
  <=> ! [X0,X1] : is_a_theorem(implies(or(X0,X1),or(X1,X0))) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+0.ax',r3) ).

fof(f25,axiom,
    ( r4
  <=> ! [X0,X1,X2] : is_a_theorem(implies(or(X0,or(X1,X2)),or(X1,or(X0,X2)))) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+0.ax',r4) ).

fof(f26,axiom,
    ( r5
  <=> ! [X0,X1,X2] : is_a_theorem(implies(implies(X1,X2),implies(or(X0,X1),or(X0,X2)))) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+0.ax',r5) ).

fof(f30,axiom,
    ( op_implies_or
   => ! [X0,X1] : implies(X0,X1) = or(not(X0),X1) ),
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+1.ax',op_implies_or) ).

fof(f32,axiom,
    op_implies_or,
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+4.ax',principia_op_implies_or) ).

fof(f35,axiom,
    modus_ponens,
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+4.ax',principia_modus_ponens) ).

fof(f36,axiom,
    r1,
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+4.ax',principia_r1) ).

fof(f37,axiom,
    r2,
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+4.ax',principia_r2) ).

fof(f38,axiom,
    r3,
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+4.ax',principia_r3) ).

fof(f39,axiom,
    r4,
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+4.ax',principia_r4) ).

fof(f40,axiom,
    r5,
    file('/export/starexec/sandbox2/benchmark/Axioms/LCL006+4.ax',principia_r5) ).

fof(f45,conjecture,
    cn2,
    file('/export/starexec/sandbox2/benchmark/theBenchmark.p',luka_cn2) ).

fof(f46,negated_conjecture,
    ~ cn2,
    inference(negated_conjecture,[status(cth)],[f45]) ).

fof(f47,plain,
    ~ cn2,
    inference(flattening,[],[f46]) ).

fof(f48,plain,
    ( r5
   => ! [X0,X1,X2] : is_a_theorem(implies(implies(X1,X2),implies(or(X0,X1),or(X0,X2)))) ),
    inference(unused_predicate_definition_removal,[],[f26]) ).

fof(f49,plain,
    ( r4
   => ! [X0,X1,X2] : is_a_theorem(implies(or(X0,or(X1,X2)),or(X1,or(X0,X2)))) ),
    inference(unused_predicate_definition_removal,[],[f25]) ).

fof(f50,plain,
    ( r3
   => ! [X0,X1] : is_a_theorem(implies(or(X0,X1),or(X1,X0))) ),
    inference(unused_predicate_definition_removal,[],[f24]) ).

fof(f51,plain,
    ( r2
   => ! [X0,X1] : is_a_theorem(implies(X1,or(X0,X1))) ),
    inference(unused_predicate_definition_removal,[],[f23]) ).

fof(f52,plain,
    ( r1
   => ! [X0] : is_a_theorem(implies(or(X0,X0),X0)) ),
    inference(unused_predicate_definition_removal,[],[f22]) ).

fof(f53,plain,
    ( ! [X0,X1] : is_a_theorem(implies(X0,implies(not(X0),X1)))
   => cn2 ),
    inference(unused_predicate_definition_removal,[],[f20]) ).

fof(f55,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(f58,plain,
    ( ~ modus_ponens
    | ! [X0,X1] :
        ( ~ is_a_theorem(implies(X0,X1))
        | ~ is_a_theorem(X0)
        | is_a_theorem(X1) ) ),
    inference(ennf_transformation,[],[f55]) ).

fof(f59,plain,
    ( ~ modus_ponens
    | ! [X0,X1] :
        ( ~ is_a_theorem(implies(X0,X1))
        | ~ is_a_theorem(X0)
        | is_a_theorem(X1) ) ),
    inference(flattening,[],[f58]) ).

fof(f61,plain,
    ( ? [X0,X1] : ~ is_a_theorem(implies(X0,implies(not(X0),X1)))
    | cn2 ),
    inference(ennf_transformation,[],[f53]) ).

fof(f62,plain,
    ( ~ r1
    | ! [X0] : is_a_theorem(implies(or(X0,X0),X0)) ),
    inference(ennf_transformation,[],[f52]) ).

fof(f63,plain,
    ( ~ r2
    | ! [X0,X1] : is_a_theorem(implies(X1,or(X0,X1))) ),
    inference(ennf_transformation,[],[f51]) ).

fof(f64,plain,
    ( ~ r3
    | ! [X0,X1] : is_a_theorem(implies(or(X0,X1),or(X1,X0))) ),
    inference(ennf_transformation,[],[f50]) ).

fof(f65,plain,
    ( ~ r4
    | ! [X0,X1,X2] : is_a_theorem(implies(or(X0,or(X1,X2)),or(X1,or(X0,X2)))) ),
    inference(ennf_transformation,[],[f49]) ).

fof(f66,plain,
    ( ~ r5
    | ! [X0,X1,X2] : is_a_theorem(implies(implies(X1,X2),implies(or(X0,X1),or(X0,X2)))) ),
    inference(ennf_transformation,[],[f48]) ).

fof(f69,plain,
    ( ~ op_implies_or
    | ! [X0,X1] : implies(X0,X1) = or(not(X0),X1) ),
    inference(ennf_transformation,[],[f30]) ).

fof(f71,plain,
    ( ~ is_a_theorem(implies(sK0,implies(not(sK0),sK1)))
    | cn2 ),
    inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1]),skolemize(X0,sK0),skolemize(X1,sK1)],[f61]) ).

fof(f72,plain,
    ! [X0,X1] :
      ( ~ modus_ponens
      | ~ is_a_theorem(implies(X0,X1))
      | ~ is_a_theorem(X0)
      | is_a_theorem(X1) ),
    inference(cnf_transformation,[],[f59]) ).

fof(f74,plain,
    ( ~ is_a_theorem(implies(sK0,implies(not(sK0),sK1)))
    | cn2 ),
    inference(cnf_transformation,[],[f71]) ).

fof(f75,plain,
    ! [X0] :
      ( ~ r1
      | is_a_theorem(implies(or(X0,X0),X0)) ),
    inference(cnf_transformation,[],[f62]) ).

fof(f76,plain,
    ! [X0,X1] :
      ( ~ r2
      | is_a_theorem(implies(X1,or(X0,X1))) ),
    inference(cnf_transformation,[],[f63]) ).

fof(f77,plain,
    ! [X0,X1] :
      ( ~ r3
      | is_a_theorem(implies(or(X0,X1),or(X1,X0))) ),
    inference(cnf_transformation,[],[f64]) ).

fof(f78,plain,
    ! [X2,X0,X1] :
      ( ~ r4
      | is_a_theorem(implies(or(X0,or(X1,X2)),or(X1,or(X0,X2)))) ),
    inference(cnf_transformation,[],[f65]) ).

fof(f79,plain,
    ! [X2,X0,X1] :
      ( ~ r5
      | is_a_theorem(implies(implies(X1,X2),implies(or(X0,X1),or(X0,X2)))) ),
    inference(cnf_transformation,[],[f66]) ).

fof(f82,plain,
    ! [X0,X1] :
      ( ~ op_implies_or
      | implies(X0,X1) = or(not(X0),X1) ),
    inference(cnf_transformation,[],[f69]) ).

fof(f84,plain,
    op_implies_or,
    inference(cnf_transformation,[],[f32]) ).

fof(f87,plain,
    modus_ponens,
    inference(cnf_transformation,[],[f35]) ).

fof(f88,plain,
    r1,
    inference(cnf_transformation,[],[f36]) ).

fof(f89,plain,
    r2,
    inference(cnf_transformation,[],[f37]) ).

fof(f90,plain,
    r3,
    inference(cnf_transformation,[],[f38]) ).

fof(f91,plain,
    r4,
    inference(cnf_transformation,[],[f39]) ).

fof(f92,plain,
    r5,
    inference(cnf_transformation,[],[f40]) ).

fof(f96,plain,
    ~ cn2,
    inference(cnf_transformation,[],[f47]) ).

tcf(c_49,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(X1)
      | ~ modus_ponens
      | ~ is_a_theorem(X0)
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(cnf_transformation,[],[f72]) ).

tcf(c_51,plain,
    ( cn2
    | ~ is_a_theorem(implies(sK0,implies(not(sK0),sK1))) ),
    inference(cnf_transformation,[],[f74]) ).

tcf(c_52,plain,
    ! [X0: $i] :
      ( is_a_theorem(implies(or(X0,X0),X0))
      | ~ r1 ),
    inference(cnf_transformation,[],[f75]) ).

tcf(c_53,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(implies(X0,or(X1,X0)))
      | ~ r2 ),
    inference(cnf_transformation,[],[f76]) ).

tcf(c_54,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(implies(or(X0,X1),or(X1,X0)))
      | ~ r3 ),
    inference(cnf_transformation,[],[f77]) ).

tcf(c_55,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(implies(or(X0,or(X1,X2)),or(X1,or(X0,X2))))
      | ~ r4 ),
    inference(cnf_transformation,[],[f78]) ).

tcf(c_56,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(implies(implies(X0,X1),implies(or(X2,X0),or(X2,X1))))
      | ~ r5 ),
    inference(cnf_transformation,[],[f79]) ).

tcf(c_59,plain,
    ! [X0: $i,X1: $i] :
      ( ( or(not(X0),X1) = implies(X0,X1) )
      | ~ op_implies_or ),
    inference(cnf_transformation,[],[f82]) ).

tcf(c_61,plain,
    op_implies_or,
    inference(cnf_transformation,[],[f84]) ).

tcf(c_64,plain,
    modus_ponens,
    inference(cnf_transformation,[],[f87]) ).

tcf(c_65,plain,
    r1,
    inference(cnf_transformation,[],[f88]) ).

tcf(c_66,plain,
    r2,
    inference(cnf_transformation,[],[f89]) ).

tcf(c_67,plain,
    r3,
    inference(cnf_transformation,[],[f90]) ).

tcf(c_68,plain,
    r4,
    inference(cnf_transformation,[],[f91]) ).

tcf(c_69,plain,
    r5,
    inference(cnf_transformation,[],[f92]) ).

tcf(c_73,negated_conjecture,
    ~ cn2,
    inference(cnf_transformation,[],[f96]) ).

tcf(c_84,plain,
    ! [X0: $i,X1: $i] : is_a_theorem(implies(X0,or(X1,X0))),
    inference(global_subsumption_just,[status(thm)],[c_53,c_66,c_53]) ).

tcf(c_87,plain,
    ! [X0: $i] : is_a_theorem(implies(or(X0,X0),X0)),
    inference(global_subsumption_just,[status(thm)],[c_52,c_65,c_52]) ).

tcf(c_90,plain,
    ~ is_a_theorem(implies(sK0,implies(not(sK0),sK1))),
    inference(global_subsumption_just,[status(thm)],[c_51,c_73,c_51]) ).

tcf(c_92,plain,
    ! [X0: $i,X1: $i] : is_a_theorem(implies(or(X0,X1),or(X1,X0))),
    inference(global_subsumption_just,[status(thm)],[c_54,c_67,c_54]) ).

tcf(c_95,plain,
    ! [X0: $i,X1: $i] : or(not(X0),X1) = implies(X0,X1),
    inference(global_subsumption_just,[status(thm)],[c_59,c_61,c_59]) ).

tcf(c_101,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(X1)
      | ~ is_a_theorem(implies(X0,X1))
      | ~ is_a_theorem(X0) ),
    inference(global_subsumption_just,[status(thm)],[c_49,c_64,c_49]) ).

tcf(c_102,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(X1)
      | ~ is_a_theorem(X0)
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(renaming,[status(thm)],[c_101]) ).

tcf(c_112,plain,
    ! [X0: $i,X1: $i,X2: $i] : is_a_theorem(implies(implies(X0,X1),implies(or(X2,X0),or(X2,X1)))),
    inference(global_subsumption_just,[status(thm)],[c_56,c_69,c_56]) ).

tcf(c_115,plain,
    ! [X0: $i,X1: $i,X2: $i] : is_a_theorem(implies(or(X0,or(X1,X2)),or(X1,or(X0,X2)))),
    inference(global_subsumption_just,[status(thm)],[c_55,c_68,c_55]) ).

tcf(c_134,plain,
    ! [X0: $i] : X0 = X0,
    theory(equality) ).

tcf(c_136,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( ( X2 = X0 )
      | ( X2 != X1 )
      | ( X0 != X1 ) ),
    theory(equality) ).

tcf(c_137,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(X0)
      | ~ is_a_theorem(X1)
      | ( X0 != X1 ) ),
    theory(equality) ).

tcf(c_138,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( ( implies(X0,X2) = implies(X1,X3) )
      | ( X2 != X3 )
      | ( X0 != X1 ) ),
    theory(equality) ).

tcf(c_190,plain,
    ! [X0: $i] :
      ( is_a_theorem(X0)
      | ~ is_a_theorem(or(X0,X0)) ),
    inference(resolution,[status(thm)],[c_102,c_87]) ).

tcf(c_194,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(or(X1,X0))
      | ~ is_a_theorem(or(X0,X1)) ),
    inference(resolution,[status(thm)],[c_102,c_92]) ).

tcf(c_274,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(or(not(X0),X1))
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[status(thm)],[c_137,c_95]) ).

tcf(c_380,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(implies(or(X2,X0),or(X2,X1)))
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[status(thm)],[c_112,c_102]) ).

tcf(c_393,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X1,or(X0,X2)))
      | ~ is_a_theorem(or(X0,or(X1,X2))) ),
    inference(resolution,[status(thm)],[c_115,c_102]) ).

tcf(c_460,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X2,X1))
      | ~ is_a_theorem(or(X2,X0))
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[status(thm)],[c_380,c_102]) ).

tcf(c_480,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X1,or(not(X0),X2)))
      | ~ is_a_theorem(implies(X0,or(X1,X2))) ),
    inference(resolution,[status(thm)],[c_393,c_274]) ).

tcf(c_675,plain,
    ! [X0: $i,X1: $i] :
      ( ( X1 = X0 )
      | ( X0 != X1 ) ),
    inference(resolution,[status(thm)],[c_136,c_134]) ).

tcf(c_703,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( is_a_theorem(implies(X0,X2))
      | ~ is_a_theorem(implies(X1,X3))
      | ( X2 != X3 )
      | ( X0 != X1 ) ),
    inference(resolution,[status(thm)],[c_138,c_137]) ).

tcf(c_765,plain,
    ! [X0: $i,X1: $i] : implies(X0,X1) = or(not(X0),X1),
    inference(resolution,[status(thm)],[c_675,c_95]) ).

tcf(c_808,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(implies(X0,X1))
      | ~ is_a_theorem(or(not(X0),X1)) ),
    inference(resolution,[status(thm)],[c_765,c_137]) ).

tcf(c_1770,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( is_a_theorem(implies(X0,X2))
      | ( X2 != or(X3,X1) )
      | ( X0 != X1 ) ),
    inference(resolution,[status(thm)],[c_703,c_84]) ).

tcf(c_1771,plain,
    ! [X0: $i,X1: $i,X2: $i,X3: $i] :
      ( is_a_theorem(implies(X0,X3))
      | ( X3 != or(X2,X1) )
      | ( X0 != or(X1,X2) ) ),
    inference(resolution,[status(thm)],[c_703,c_92]) ).

tcf(c_5271,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(implies(X0,or(X2,X1)))
      | ( X0 != X1 ) ),
    inference(resolution,[status(thm)],[c_1770,c_134]) ).

tcf(c_5664,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X2,X1))
      | ~ is_a_theorem(X0)
      | ( X0 != X1 ) ),
    inference(resolution,[status(thm)],[c_5271,c_102]) ).

tcf(c_6033,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X2,or(not(X0),X1)))
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[status(thm)],[c_5664,c_765]) ).

tcf(c_7092,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(not(X0),or(X2,X1)))
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[status(thm)],[c_6033,c_393]) ).

tcf(c_7378,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(implies(X0,or(X2,X1)))
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[status(thm)],[c_7092,c_808]) ).

tcf(c_7390,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X2,X1))
      | ~ is_a_theorem(X0)
      | ~ is_a_theorem(implies(X0,X1)) ),
    inference(resolution,[status(thm)],[c_7378,c_102]) ).

tcf(c_7506,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(implies(X0,implies(X2,X1)))
      | ( X0 != or(X1,not(X2)) ) ),
    inference(resolution,[status(thm)],[c_1771,c_765]) ).

tcf(c_8026,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X2,or(X1,X0)))
      | ~ is_a_theorem(or(X0,X1)) ),
    inference(resolution,[status(thm)],[c_7390,c_92]) ).

tcf(c_8146,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X1,or(X2,X0)))
      | ~ is_a_theorem(or(X0,X1)) ),
    inference(resolution,[status(thm)],[c_8026,c_393]) ).

tcf(c_8481,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(or(X1,X0))
      | ~ is_a_theorem(or(X0,or(X1,X0))) ),
    inference(resolution,[status(thm)],[c_8146,c_190]) ).

tcf(c_18136,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(or(not(X0),X1))
      | ~ is_a_theorem(implies(X0,or(X1,X1))) ),
    inference(resolution,[status(thm)],[c_480,c_8481]) ).

tcf(c_18223,plain,
    ! [X0: $i] : is_a_theorem(or(not(X0),X0)),
    inference(resolution,[status(thm)],[c_18136,c_84]) ).

tcf(c_18481,plain,
    ! [X0: $i] : is_a_theorem(or(X0,not(X0))),
    inference(resolution,[status(thm)],[c_18223,c_194]) ).

tcf(c_19089,plain,
    ! [X0: $i,X1: $i] :
      ( is_a_theorem(or(X0,X1))
      | ~ is_a_theorem(implies(not(X0),X1)) ),
    inference(resolution,[status(thm)],[c_18481,c_460]) ).

tcf(c_21974,plain,
    ! [X0: $i,X1: $i] : is_a_theorem(implies(or(X0,not(X1)),implies(X1,X0))),
    inference(resolution,[status(thm)],[c_7506,c_134]) ).

tcf(c_23029,plain,
    ! [X0: $i,X1: $i] : is_a_theorem(or(X0,or(X1,not(X0)))),
    inference(resolution,[status(thm)],[c_19089,c_84]) ).

tcf(c_23237,plain,
    ! [X0: $i,X1: $i,X2: $i] :
      ( is_a_theorem(or(X1,X2))
      | ~ is_a_theorem(implies(or(X0,not(X1)),X2)) ),
    inference(resolution,[status(thm)],[c_23029,c_460]) ).

tcf(c_173393,plain,
    ! [X0: $i,X1: $i] : is_a_theorem(or(X0,implies(X0,X1))),
    inference(resolution,[status(thm)],[c_23237,c_21974]) ).

tcf(c_173862,plain,
    ! [X0: $i,X1: $i] : is_a_theorem(implies(X0,implies(not(X0),X1))),
    inference(resolution,[status(thm)],[c_173393,c_808]) ).

tcf(c_176561,plain,
    $false,
    inference(backward_subsumption_resolution,[status(thm)],[c_90,c_173862]) ).


%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.04  % Problem  : LCL497+1 : TPTP v9.3.1. Bugfixed v9.2.0.
% 0.00/0.07  % Command  : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.16/5.44  % Computer : n020.cluster.edu
% 0.16/5.44  % Model    : x86_64 x86_64
% 0.16/5.44  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/5.44  % Memory   : 8046.5625MB
% 0.16/5.44  % OS       : Linux 6.8.0-71-generic
% 0.16/5.45  % CPULimit : 300
% 0.16/5.45  % WCLimit  : 300
% 0.16/5.45  % DateTime : Wed Sep 23 23:35:09 UTC 2026
% 0.16/5.45  % CPUTime  : 
% 0.16/5.45  Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.21/5.50  Running first-order theorem proving
% 0.21/5.50  Running: /export/starexec/sandbox2/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.21/5.52  
% 0.21/5.52  % ======== iProver multi-core TPTP/SMT =========
% 0.21/5.52  
% 0.21/5.52  % Detected problem language: tptp
% 0.21/5.53  % Proving...
% 106.44/21.66  % SZS status Started for theBenchmark.p
% 106.44/21.66  % SZS status Theorem for theBenchmark.p
% 106.44/21.66  
% 106.44/21.66  %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 106.44/21.66  
% 106.44/21.66  % ------  iProver source info
% 106.44/21.66  
% 106.44/21.66  % git: date: 2026-07-19 20:42:38 +0200
% 106.44/21.66  % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 106.44/21.66  % git: non_committed_changes: false
% 106.44/21.66  
% 106.44/21.66  % ------ Parsing...
% 106.44/21.66  % ------ Clausification by vclausify_rel  & Parsing by iProver...% 
% 106.44/21.66  
% 106.44/21.66  % ------ Preprocessing... sf_s  rm: 13 0s  sf_e  sf_s  rm: 1 0s  sf_e % 
% 106.44/21.66  
% 106.44/21.66  % ------ Preprocessing...% 
% 106.44/21.66  
% 106.44/21.66  % ------ Preprocessing... sf_s  rm: 1 0s  sf_e  sf_s  rm: 0 0s  sf_e 
% 106.44/21.66  % ------ Proving...
% 106.44/21.66  % ------ Problem Properties 
% 106.44/21.66  
% 106.44/21.66  % 
% 106.44/21.66  % clauses                               12
% 106.44/21.66  % conjectures                           0
% 106.44/21.66  % EPR                                   0
% 106.44/21.66  % Horn                                  12
% 106.44/21.66  % unary                                 10
% 106.44/21.66  % binary                                1
% 106.44/21.66  % lits                                  15
% 106.44/21.66  % lits eq                               5
% 106.44/21.66  % fd_pure                               0
% 106.44/21.66  % fd_pseudo                             0
% 106.44/21.66  % fd_cond                               0
% 106.44/21.66  % fd_pseudo_cond                        1
% 106.44/21.66  % AC symbols                            0
% 106.44/21.66  
% 106.44/21.66  % ------ Input Options Time Limit: Unbounded
% 106.44/21.66  
% 106.44/21.66  
% 106.44/21.66  % ------ 
% 106.44/21.66  % Current options:
% 106.44/21.66  % ------ 
% 106.44/21.66  
% 106.44/21.66  
% 106.44/21.66  % 
% 106.44/21.66  
% 106.44/21.66  % ------ Proving...
% 106.44/21.66  % 
% 106.44/21.66  
% 106.44/21.66  % SZS status Theorem for theBenchmark.p
% 106.44/21.66  
% 106.44/21.66  % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 106.44/21.67  
% 106.44/21.67  
%------------------------------------------------------------------------------