TSTP Solution File: LCL535+1 by ET---2.0

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : ET---2.0
% Problem  : LCL535+1 : TPTP v8.1.0. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : run_ET %s %d

% Computer : n004.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  : 600s
% DateTime : Sun Jul 17 10:11:44 EDT 2022

% Result   : Theorem 0.32s 14.51s
% Output   : CNFRefutation 0.32s
% Verified : 
% SZS Type : Refutation
%            Derivation depth      :   12
%            Number of leaves      :   34
% Syntax   : Number of formulae    :  124 (  62 unt;   0 def)
%            Number of atoms       :  235 (  25 equ)
%            Maximal formula atoms :   10 (   1 avg)
%            Number of connectives :  186 (  75   ~;  73   |;  18   &)
%                                         (  13 <=>;   7  =>;   0  <=;   0 <~>)
%            Maximal formula depth :    8 (   3 avg)
%            Maximal term depth    :    9 (   2 avg)
%            Number of predicates  :   20 (  18 usr;  18 prp; 0-2 aty)
%            Number of functors    :   31 (  31 usr;  23 con; 0-2 aty)
%            Number of variables   :  147 (   5 sgn  60   !;   0   ?)

% Comments : 
%------------------------------------------------------------------------------
fof(modus_ponens,axiom,
    ( modus_ponens
  <=> ! [X1,X2] :
        ( ( is_a_theorem(X1)
          & is_a_theorem(implies(X1,X2)) )
       => is_a_theorem(X2) ) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',modus_ponens) ).

fof(implies_2,axiom,
    ( implies_2
  <=> ! [X1,X2] : is_a_theorem(implies(implies(X1,implies(X1,X2)),implies(X1,X2))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',implies_2) ).

fof(implies_3,axiom,
    ( implies_3
  <=> ! [X1,X2,X3] : is_a_theorem(implies(implies(X1,X2),implies(implies(X2,X3),implies(X1,X3)))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',implies_3) ).

fof(hilbert_modus_ponens,axiom,
    modus_ponens,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_modus_ponens) ).

fof(hilbert_implies_2,axiom,
    implies_2,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_implies_2) ).

fof(and_3,axiom,
    ( and_3
  <=> ! [X1,X2] : is_a_theorem(implies(X1,implies(X2,and(X1,X2)))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',and_3) ).

fof(modus_tollens,axiom,
    ( modus_tollens
  <=> ! [X1,X2] : is_a_theorem(implies(implies(not(X2),not(X1)),implies(X1,X2))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',modus_tollens) ).

fof(op_implies_and,axiom,
    ( op_implies_and
   => ! [X1,X2] : implies(X1,X2) = not(and(X1,not(X2))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+1.ax',op_implies_and) ).

fof(hilbert_implies_3,axiom,
    implies_3,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_implies_3) ).

fof(hilbert_and_3,axiom,
    and_3,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_and_3) ).

fof(hilbert_modus_tollens,axiom,
    modus_tollens,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_modus_tollens) ).

fof(op_or,axiom,
    ( op_or
   => ! [X1,X2] : or(X1,X2) = not(and(not(X1),not(X2))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+1.ax',op_or) ).

fof(hilbert_op_implies_and,axiom,
    op_implies_and,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_op_implies_and) ).

fof(equivalence_3,axiom,
    ( equivalence_3
  <=> ! [X1,X2] : is_a_theorem(implies(implies(X1,X2),implies(implies(X2,X1),equiv(X1,X2)))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',equivalence_3) ).

fof(or_1,axiom,
    ( or_1
  <=> ! [X1,X2] : is_a_theorem(implies(X1,or(X1,X2))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',or_1) ).

fof(hilbert_op_or,axiom,
    op_or,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_op_or) ).

fof(hilbert_equivalence_3,axiom,
    equivalence_3,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_equivalence_3) ).

fof(hilbert_or_1,axiom,
    or_1,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_or_1) ).

fof(op_possibly,axiom,
    ( op_possibly
   => ! [X1] : possibly(X1) = not(necessarily(not(X1))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+1.ax',op_possibly) ).

fof(s1_0_m6s3m9b_axiom_m9,conjecture,
    axiom_m9,
    file('/export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p.mepo_128.in',s1_0_m6s3m9b_axiom_m9) ).

fof(substitution_of_equivalents,axiom,
    ( substitution_of_equivalents
  <=> ! [X1,X2] :
        ( is_a_theorem(equiv(X1,X2))
       => X1 = X2 ) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',substitution_of_equivalents) ).

fof(axiom_m9,axiom,
    ( axiom_m9
  <=> ! [X1] : is_a_theorem(strict_implies(possibly(possibly(X1)),possibly(X1))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+0.ax',axiom_m9) ).

fof(km5_op_possibly,axiom,
    op_possibly,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+2.ax',km5_op_possibly) ).

fof(op_strict_implies,axiom,
    ( op_strict_implies
   => ! [X1,X2] : strict_implies(X1,X2) = necessarily(implies(X1,X2)) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+1.ax',op_strict_implies) ).

fof(substitution_of_equivalents_001,axiom,
    substitution_of_equivalents,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',substitution_of_equivalents) ).

fof(axiom_5,axiom,
    ( axiom_5
  <=> ! [X1] : is_a_theorem(implies(possibly(X1),necessarily(possibly(X1)))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+0.ax',axiom_5) ).

fof(axiom_M,axiom,
    ( axiom_M
  <=> ! [X1] : is_a_theorem(implies(necessarily(X1),X1)) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+0.ax',axiom_M) ).

fof(s1_0_op_strict_implies,axiom,
    op_strict_implies,
    file('/export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p.mepo_128.in',s1_0_op_strict_implies) ).

fof(necessitation,axiom,
    ( necessitation
  <=> ! [X1] :
        ( is_a_theorem(X1)
       => is_a_theorem(necessarily(X1)) ) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+0.ax',necessitation) ).

fof(km5_axiom_5,axiom,
    axiom_5,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+2.ax',km5_axiom_5) ).

fof(km5_axiom_M,axiom,
    axiom_M,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+2.ax',km5_axiom_M) ).

fof(implies_1,axiom,
    ( implies_1
  <=> ! [X1,X2] : is_a_theorem(implies(X1,implies(X2,X1))) ),
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+0.ax',implies_1) ).

fof(km5_necessitation,axiom,
    necessitation,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL007+2.ax',km5_necessitation) ).

fof(hilbert_implies_1,axiom,
    implies_1,
    file('/export/starexec/sandbox/benchmark/Axioms/LCL006+2.ax',hilbert_implies_1) ).

fof(c_0_34,plain,
    ! [X3,X4] :
      ( ( ~ modus_ponens
        | ~ is_a_theorem(X3)
        | ~ is_a_theorem(implies(X3,X4))
        | is_a_theorem(X4) )
      & ( is_a_theorem(esk1_0)
        | modus_ponens )
      & ( is_a_theorem(implies(esk1_0,esk2_0))
        | modus_ponens )
      & ( ~ is_a_theorem(esk2_0)
        | modus_ponens ) ),
    inference(distribute,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[modus_ponens])])])])])])]) ).

fof(c_0_35,plain,
    ! [X3,X4] :
      ( ( ~ implies_2
        | is_a_theorem(implies(implies(X3,implies(X3,X4)),implies(X3,X4))) )
      & ( ~ is_a_theorem(implies(implies(esk9_0,implies(esk9_0,esk10_0)),implies(esk9_0,esk10_0)))
        | implies_2 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[implies_2])])])])])]) ).

fof(c_0_36,plain,
    ! [X4,X5,X6] :
      ( ( ~ implies_3
        | is_a_theorem(implies(implies(X4,X5),implies(implies(X5,X6),implies(X4,X6)))) )
      & ( ~ is_a_theorem(implies(implies(esk11_0,esk12_0),implies(implies(esk12_0,esk13_0),implies(esk11_0,esk13_0))))
        | implies_3 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[implies_3])])])])])]) ).

cnf(c_0_37,plain,
    ( is_a_theorem(X1)
    | ~ is_a_theorem(implies(X2,X1))
    | ~ is_a_theorem(X2)
    | ~ modus_ponens ),
    inference(split_conjunct,[status(thm)],[c_0_34]) ).

cnf(c_0_38,plain,
    modus_ponens,
    inference(split_conjunct,[status(thm)],[hilbert_modus_ponens]) ).

cnf(c_0_39,plain,
    ( is_a_theorem(implies(implies(X1,implies(X1,X2)),implies(X1,X2)))
    | ~ implies_2 ),
    inference(split_conjunct,[status(thm)],[c_0_35]) ).

cnf(c_0_40,plain,
    implies_2,
    inference(split_conjunct,[status(thm)],[hilbert_implies_2]) ).

fof(c_0_41,plain,
    ! [X3,X4] :
      ( ( ~ and_3
        | is_a_theorem(implies(X3,implies(X4,and(X3,X4)))) )
      & ( ~ is_a_theorem(implies(esk18_0,implies(esk19_0,and(esk18_0,esk19_0))))
        | and_3 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[and_3])])])])])]) ).

fof(c_0_42,plain,
    ! [X3,X4] :
      ( ( ~ modus_tollens
        | is_a_theorem(implies(implies(not(X4),not(X3)),implies(X3,X4))) )
      & ( ~ is_a_theorem(implies(implies(not(esk6_0),not(esk5_0)),implies(esk5_0,esk6_0)))
        | modus_tollens ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[modus_tollens])])])])])]) ).

fof(c_0_43,plain,
    ! [X3,X4] :
      ( ~ op_implies_and
      | implies(X3,X4) = not(and(X3,not(X4))) ),
    inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[op_implies_and])])])])]) ).

cnf(c_0_44,plain,
    ( is_a_theorem(implies(implies(X1,X2),implies(implies(X2,X3),implies(X1,X3))))
    | ~ implies_3 ),
    inference(split_conjunct,[status(thm)],[c_0_36]) ).

cnf(c_0_45,plain,
    implies_3,
    inference(split_conjunct,[status(thm)],[hilbert_implies_3]) ).

cnf(c_0_46,plain,
    ( is_a_theorem(X1)
    | ~ is_a_theorem(implies(X2,X1))
    | ~ is_a_theorem(X2) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_37,c_0_38])]) ).

cnf(c_0_47,plain,
    is_a_theorem(implies(implies(X1,implies(X1,X2)),implies(X1,X2))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_39,c_0_40])]) ).

cnf(c_0_48,plain,
    ( is_a_theorem(implies(X1,implies(X2,and(X1,X2))))
    | ~ and_3 ),
    inference(split_conjunct,[status(thm)],[c_0_41]) ).

cnf(c_0_49,plain,
    and_3,
    inference(split_conjunct,[status(thm)],[hilbert_and_3]) ).

cnf(c_0_50,plain,
    ( is_a_theorem(implies(implies(not(X1),not(X2)),implies(X2,X1)))
    | ~ modus_tollens ),
    inference(split_conjunct,[status(thm)],[c_0_42]) ).

cnf(c_0_51,plain,
    modus_tollens,
    inference(split_conjunct,[status(thm)],[hilbert_modus_tollens]) ).

fof(c_0_52,plain,
    ! [X3,X4] :
      ( ~ op_or
      | or(X3,X4) = not(and(not(X3),not(X4))) ),
    inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[op_or])])])])]) ).

cnf(c_0_53,plain,
    ( implies(X1,X2) = not(and(X1,not(X2)))
    | ~ op_implies_and ),
    inference(split_conjunct,[status(thm)],[c_0_43]) ).

cnf(c_0_54,plain,
    op_implies_and,
    inference(split_conjunct,[status(thm)],[hilbert_op_implies_and]) ).

fof(c_0_55,plain,
    ! [X3,X4] :
      ( ( ~ equivalence_3
        | is_a_theorem(implies(implies(X3,X4),implies(implies(X4,X3),equiv(X3,X4)))) )
      & ( ~ is_a_theorem(implies(implies(esk31_0,esk32_0),implies(implies(esk32_0,esk31_0),equiv(esk31_0,esk32_0))))
        | equivalence_3 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[equivalence_3])])])])])]) ).

cnf(c_0_56,plain,
    is_a_theorem(implies(implies(X1,X2),implies(implies(X2,X3),implies(X1,X3)))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_44,c_0_45])]) ).

cnf(c_0_57,plain,
    ( is_a_theorem(implies(X1,X2))
    | ~ is_a_theorem(implies(X1,implies(X1,X2))) ),
    inference(spm,[status(thm)],[c_0_46,c_0_47]) ).

cnf(c_0_58,plain,
    is_a_theorem(implies(X1,implies(X2,and(X1,X2)))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_48,c_0_49])]) ).

cnf(c_0_59,plain,
    is_a_theorem(implies(implies(not(X1),not(X2)),implies(X2,X1))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_50,c_0_51])]) ).

fof(c_0_60,plain,
    ! [X3,X4] :
      ( ( ~ or_1
        | is_a_theorem(implies(X3,or(X3,X4))) )
      & ( ~ is_a_theorem(implies(esk20_0,or(esk20_0,esk21_0)))
        | or_1 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[or_1])])])])])]) ).

cnf(c_0_61,plain,
    ( or(X1,X2) = not(and(not(X1),not(X2)))
    | ~ op_or ),
    inference(split_conjunct,[status(thm)],[c_0_52]) ).

cnf(c_0_62,plain,
    not(and(X1,not(X2))) = implies(X1,X2),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_53,c_0_54])]) ).

cnf(c_0_63,plain,
    op_or,
    inference(split_conjunct,[status(thm)],[hilbert_op_or]) ).

cnf(c_0_64,plain,
    ( is_a_theorem(implies(implies(X1,X2),implies(implies(X2,X1),equiv(X1,X2))))
    | ~ equivalence_3 ),
    inference(split_conjunct,[status(thm)],[c_0_55]) ).

cnf(c_0_65,plain,
    equivalence_3,
    inference(split_conjunct,[status(thm)],[hilbert_equivalence_3]) ).

cnf(c_0_66,plain,
    ( is_a_theorem(implies(implies(X1,X2),implies(X3,X2)))
    | ~ is_a_theorem(implies(X3,X1)) ),
    inference(spm,[status(thm)],[c_0_46,c_0_56]) ).

cnf(c_0_67,plain,
    is_a_theorem(implies(X1,and(X1,X1))),
    inference(spm,[status(thm)],[c_0_57,c_0_58]) ).

cnf(c_0_68,plain,
    ( is_a_theorem(implies(X1,X2))
    | ~ is_a_theorem(implies(not(X2),not(X1))) ),
    inference(spm,[status(thm)],[c_0_46,c_0_59]) ).

cnf(c_0_69,plain,
    ( is_a_theorem(implies(X1,or(X1,X2)))
    | ~ or_1 ),
    inference(split_conjunct,[status(thm)],[c_0_60]) ).

cnf(c_0_70,plain,
    or(X1,X2) = implies(not(X1),X2),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_61,c_0_62]),c_0_63])]) ).

cnf(c_0_71,plain,
    or_1,
    inference(split_conjunct,[status(thm)],[hilbert_or_1]) ).

fof(c_0_72,plain,
    ! [X2] :
      ( ~ op_possibly
      | possibly(X2) = not(necessarily(not(X2))) ),
    inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[op_possibly])])])])]) ).

fof(c_0_73,negated_conjecture,
    ~ axiom_m9,
    inference(assume_negation,[status(cth)],[s1_0_m6s3m9b_axiom_m9]) ).

fof(c_0_74,plain,
    ! [X3,X4] :
      ( ( ~ substitution_of_equivalents
        | ~ is_a_theorem(equiv(X3,X4))
        | X3 = X4 )
      & ( is_a_theorem(equiv(esk3_0,esk4_0))
        | substitution_of_equivalents )
      & ( esk3_0 != esk4_0
        | substitution_of_equivalents ) ),
    inference(distribute,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[substitution_of_equivalents])])])])])])]) ).

cnf(c_0_75,plain,
    is_a_theorem(implies(implies(X1,X2),implies(implies(X2,X1),equiv(X1,X2)))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_64,c_0_65])]) ).

cnf(c_0_76,plain,
    is_a_theorem(implies(implies(and(X1,X1),X2),implies(X1,X2))),
    inference(spm,[status(thm)],[c_0_66,c_0_67]) ).

cnf(c_0_77,plain,
    ( is_a_theorem(implies(and(X1,not(X2)),X3))
    | ~ is_a_theorem(implies(not(X3),implies(X1,X2))) ),
    inference(spm,[status(thm)],[c_0_68,c_0_62]) ).

cnf(c_0_78,plain,
    is_a_theorem(implies(X1,implies(not(X1),X2))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_69,c_0_70]),c_0_71])]) ).

fof(c_0_79,plain,
    ! [X2] :
      ( ( ~ axiom_m9
        | is_a_theorem(strict_implies(possibly(possibly(X2)),possibly(X2))) )
      & ( ~ is_a_theorem(strict_implies(possibly(possibly(esk93_0)),possibly(esk93_0)))
        | axiom_m9 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[axiom_m9])])])])])]) ).

cnf(c_0_80,plain,
    ( possibly(X1) = not(necessarily(not(X1)))
    | ~ op_possibly ),
    inference(split_conjunct,[status(thm)],[c_0_72]) ).

cnf(c_0_81,plain,
    op_possibly,
    inference(split_conjunct,[status(thm)],[km5_op_possibly]) ).

fof(c_0_82,negated_conjecture,
    ~ axiom_m9,
    inference(fof_simplification,[status(thm)],[c_0_73]) ).

fof(c_0_83,plain,
    ! [X3,X4] :
      ( ~ op_strict_implies
      | strict_implies(X3,X4) = necessarily(implies(X3,X4)) ),
    inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[op_strict_implies])])])])]) ).

cnf(c_0_84,plain,
    ( X1 = X2
    | ~ is_a_theorem(equiv(X1,X2))
    | ~ substitution_of_equivalents ),
    inference(split_conjunct,[status(thm)],[c_0_74]) ).

cnf(c_0_85,plain,
    substitution_of_equivalents,
    inference(split_conjunct,[status(thm)],[substitution_of_equivalents]) ).

cnf(c_0_86,plain,
    ( is_a_theorem(implies(implies(X1,X2),equiv(X2,X1)))
    | ~ is_a_theorem(implies(X2,X1)) ),
    inference(spm,[status(thm)],[c_0_46,c_0_75]) ).

fof(c_0_87,plain,
    ! [X2] :
      ( ( ~ axiom_5
        | is_a_theorem(implies(possibly(X2),necessarily(possibly(X2)))) )
      & ( ~ is_a_theorem(implies(possibly(esk68_0),necessarily(possibly(esk68_0))))
        | axiom_5 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[axiom_5])])])])])]) ).

fof(c_0_88,plain,
    ! [X2] :
      ( ( ~ axiom_M
        | is_a_theorem(implies(necessarily(X2),X2)) )
      & ( ~ is_a_theorem(implies(necessarily(esk65_0),esk65_0))
        | axiom_M ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[axiom_M])])])])])]) ).

cnf(c_0_89,plain,
    ( is_a_theorem(implies(X1,X2))
    | ~ is_a_theorem(implies(and(X1,X1),X2)) ),
    inference(spm,[status(thm)],[c_0_46,c_0_76]) ).

cnf(c_0_90,plain,
    is_a_theorem(implies(and(not(not(X1)),not(X2)),X1)),
    inference(spm,[status(thm)],[c_0_77,c_0_78]) ).

cnf(c_0_91,plain,
    ( axiom_m9
    | ~ is_a_theorem(strict_implies(possibly(possibly(esk93_0)),possibly(esk93_0))) ),
    inference(split_conjunct,[status(thm)],[c_0_79]) ).

cnf(c_0_92,plain,
    possibly(X1) = not(necessarily(not(X1))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_80,c_0_81])]) ).

cnf(c_0_93,negated_conjecture,
    ~ axiom_m9,
    inference(split_conjunct,[status(thm)],[c_0_82]) ).

cnf(c_0_94,plain,
    ( strict_implies(X1,X2) = necessarily(implies(X1,X2))
    | ~ op_strict_implies ),
    inference(split_conjunct,[status(thm)],[c_0_83]) ).

cnf(c_0_95,plain,
    op_strict_implies,
    inference(split_conjunct,[status(thm)],[s1_0_op_strict_implies]) ).

fof(c_0_96,plain,
    ! [X2] :
      ( ( ~ necessitation
        | ~ is_a_theorem(X2)
        | is_a_theorem(necessarily(X2)) )
      & ( is_a_theorem(esk56_0)
        | necessitation )
      & ( ~ is_a_theorem(necessarily(esk56_0))
        | necessitation ) ),
    inference(distribute,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[necessitation])])])])])])]) ).

cnf(c_0_97,plain,
    ( X1 = X2
    | ~ is_a_theorem(equiv(X1,X2)) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_84,c_0_85])]) ).

cnf(c_0_98,plain,
    ( is_a_theorem(equiv(X1,X2))
    | ~ is_a_theorem(implies(X2,X1))
    | ~ is_a_theorem(implies(X1,X2)) ),
    inference(spm,[status(thm)],[c_0_46,c_0_86]) ).

cnf(c_0_99,plain,
    ( is_a_theorem(implies(possibly(X1),necessarily(possibly(X1))))
    | ~ axiom_5 ),
    inference(split_conjunct,[status(thm)],[c_0_87]) ).

cnf(c_0_100,plain,
    axiom_5,
    inference(split_conjunct,[status(thm)],[km5_axiom_5]) ).

cnf(c_0_101,plain,
    ( is_a_theorem(implies(necessarily(X1),X1))
    | ~ axiom_M ),
    inference(split_conjunct,[status(thm)],[c_0_88]) ).

cnf(c_0_102,plain,
    axiom_M,
    inference(split_conjunct,[status(thm)],[km5_axiom_M]) ).

cnf(c_0_103,plain,
    is_a_theorem(implies(not(not(X1)),X1)),
    inference(spm,[status(thm)],[c_0_89,c_0_90]) ).

fof(c_0_104,plain,
    ! [X3,X4] :
      ( ( ~ implies_1
        | is_a_theorem(implies(X3,implies(X4,X3))) )
      & ( ~ is_a_theorem(implies(esk7_0,implies(esk8_0,esk7_0)))
        | implies_1 ) ),
    inference(shift_quantors,[status(thm)],[inference(skolemize,[status(esa)],[inference(shift_quantors,[status(thm)],[inference(shift_quantors,[status(thm)],[inference(variable_rename,[status(thm)],[inference(fof_nnf,[status(thm)],[implies_1])])])])])]) ).

cnf(c_0_105,plain,
    ~ is_a_theorem(strict_implies(not(necessarily(not(not(necessarily(not(esk93_0)))))),not(necessarily(not(esk93_0))))),
    inference(sr,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_91,c_0_92]),c_0_92]),c_0_92]),c_0_93]) ).

cnf(c_0_106,plain,
    strict_implies(X1,X2) = necessarily(implies(X1,X2)),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_94,c_0_95])]) ).

cnf(c_0_107,plain,
    ( is_a_theorem(necessarily(X1))
    | ~ is_a_theorem(X1)
    | ~ necessitation ),
    inference(split_conjunct,[status(thm)],[c_0_96]) ).

cnf(c_0_108,plain,
    necessitation,
    inference(split_conjunct,[status(thm)],[km5_necessitation]) ).

cnf(c_0_109,plain,
    ( X1 = X2
    | ~ is_a_theorem(implies(X2,X1))
    | ~ is_a_theorem(implies(X1,X2)) ),
    inference(spm,[status(thm)],[c_0_97,c_0_98]) ).

cnf(c_0_110,plain,
    is_a_theorem(implies(not(necessarily(not(X1))),necessarily(not(necessarily(not(X1)))))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_99,c_0_92]),c_0_92]),c_0_100])]) ).

cnf(c_0_111,plain,
    is_a_theorem(implies(necessarily(X1),X1)),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_101,c_0_102])]) ).

cnf(c_0_112,plain,
    is_a_theorem(implies(X1,not(not(X1)))),
    inference(spm,[status(thm)],[c_0_68,c_0_103]) ).

cnf(c_0_113,plain,
    ( is_a_theorem(implies(X1,implies(X2,X1)))
    | ~ implies_1 ),
    inference(split_conjunct,[status(thm)],[c_0_104]) ).

cnf(c_0_114,plain,
    implies_1,
    inference(split_conjunct,[status(thm)],[hilbert_implies_1]) ).

cnf(c_0_115,plain,
    ~ is_a_theorem(necessarily(implies(not(necessarily(not(not(necessarily(not(esk93_0)))))),not(necessarily(not(esk93_0)))))),
    inference(rw,[status(thm)],[c_0_105,c_0_106]) ).

cnf(c_0_116,plain,
    ( is_a_theorem(necessarily(X1))
    | ~ is_a_theorem(X1) ),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_107,c_0_108])]) ).

cnf(c_0_117,plain,
    necessarily(not(necessarily(not(X1)))) = not(necessarily(not(X1))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_109,c_0_110]),c_0_111])]) ).

cnf(c_0_118,plain,
    not(not(X1)) = X1,
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_109,c_0_103]),c_0_112])]) ).

cnf(c_0_119,plain,
    is_a_theorem(implies(X1,implies(X2,X1))),
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[c_0_113,c_0_114])]) ).

cnf(c_0_120,plain,
    ~ is_a_theorem(implies(not(necessarily(not(not(necessarily(not(esk93_0)))))),not(necessarily(not(esk93_0))))),
    inference(spm,[status(thm)],[c_0_115,c_0_116]) ).

cnf(c_0_121,plain,
    necessarily(necessarily(not(X1))) = necessarily(not(X1)),
    inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(spm,[status(thm)],[c_0_117,c_0_117]),c_0_118]),c_0_118]) ).

cnf(c_0_122,plain,
    is_a_theorem(implies(X1,X1)),
    inference(spm,[status(thm)],[c_0_57,c_0_119]) ).

cnf(c_0_123,plain,
    $false,
    inference(cn,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[inference(rw,[status(thm)],[c_0_120,c_0_118]),c_0_121]),c_0_122])]),
    [proof] ).

%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : LCL535+1 : TPTP v8.1.0. Released v3.3.0.
% 0.07/0.12  % Command  : run_ET %s %d
% 0.13/0.33  % Computer : n004.cluster.edu
% 0.13/0.33  % Model    : x86_64 x86_64
% 0.13/0.33  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.33  % Memory   : 8042.1875MB
% 0.13/0.33  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.13/0.33  % CPULimit : 300
% 0.13/0.33  % WCLimit  : 600
% 0.13/0.33  % DateTime : Mon Jul  4 13:21:23 EDT 2022
% 0.13/0.33  % CPUTime  : 
% 0.32/14.51  # Running protocol protocol_eprover_29fa5c60d0ee03ec4f64b055553dc135fbe4ee3a for 23 seconds:
% 0.32/14.51  # Preprocessing time       : 0.022 s
% 0.32/14.51  
% 0.32/14.51  # Proof found!
% 0.32/14.51  # SZS status Theorem
% 0.32/14.51  # SZS output start CNFRefutation
% See solution above
% 0.32/14.51  # Proof object total steps             : 124
% 0.32/14.51  # Proof object clause steps            : 71
% 0.32/14.51  # Proof object formula steps           : 53
% 0.32/14.51  # Proof object conjectures             : 4
% 0.32/14.51  # Proof object clause conjectures      : 1
% 0.32/14.51  # Proof object formula conjectures     : 3
% 0.32/14.51  # Proof object initial clauses used    : 34
% 0.32/14.51  # Proof object initial formulas used   : 34
% 0.32/14.51  # Proof object generating inferences   : 18
% 0.32/14.51  # Proof object simplifying inferences  : 51
% 0.32/14.51  # Training examples: 0 positive, 0 negative
% 0.32/14.51  # Parsed axioms                        : 88
% 0.32/14.51  # Removed by relevancy pruning/SinE    : 0
% 0.32/14.51  # Initial clauses                      : 146
% 0.32/14.51  # Removed in clause preprocessing      : 0
% 0.32/14.51  # Initial clauses in saturation        : 146
% 0.32/14.51  # Processed clauses                    : 5790
% 0.32/14.51  # ...of these trivial                  : 203
% 0.32/14.51  # ...subsumed                          : 3076
% 0.32/14.51  # ...remaining for further processing  : 2510
% 0.32/14.51  # Other redundant clauses eliminated   : 0
% 0.32/14.51  # Clauses deleted for lack of memory   : 629979
% 0.32/14.51  # Backward-subsumed                    : 92
% 0.32/14.51  # Backward-rewritten                   : 2066
% 0.32/14.51  # Generated clauses                    : 776066
% 0.32/14.51  # ...of the previous two non-trivial   : 768618
% 0.32/14.51  # Contextual simplify-reflections      : 1382
% 0.32/14.51  # Paramodulations                      : 776046
% 0.32/14.51  # Factorizations                       : 0
% 0.32/14.51  # Equation resolutions                 : 0
% 0.32/14.51  # Current number of processed clauses  : 345
% 0.32/14.51  #    Positive orientable unit clauses  : 100
% 0.32/14.51  #    Positive unorientable unit clauses: 0
% 0.32/14.51  #    Negative unit clauses             : 15
% 0.32/14.51  #    Non-unit-clauses                  : 230
% 0.32/14.51  # Current number of unprocessed clauses: 3790
% 0.32/14.51  # ...number of literals in the above   : 9139
% 0.32/14.51  # Current number of archived formulas  : 0
% 0.32/14.51  # Current number of archived clauses   : 2158
% 0.32/14.51  # Clause-clause subsumption calls (NU) : 275741
% 0.32/14.51  # Rec. Clause-clause subsumption calls : 228853
% 0.32/14.51  # Non-unit clause-clause subsumptions  : 4302
% 0.32/14.51  # Unit Clause-clause subsumption calls : 24418
% 0.32/14.51  # Rewrite failures with RHS unbound    : 0
% 0.32/14.51  # BW rewrite match attempts            : 14549
% 0.32/14.51  # BW rewrite match successes           : 636
% 0.32/14.51  # Condensation attempts                : 0
% 0.32/14.51  # Condensation successes               : 0
% 0.32/14.51  # Termbank termtop insertions          : 22530699
% 0.32/14.51  
% 0.32/14.51  # -------------------------------------------------
% 0.32/14.51  # User time                : 13.380 s
% 0.32/14.51  # System time              : 0.141 s
% 0.32/14.51  # Total time               : 13.521 s
% 0.32/14.51  # Maximum resident set size: 141208 pages
% 0.32/23.42  eprover: CPU time limit exceeded, terminating
% 0.32/23.43  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.43  eprover: No such file or directory
% 0.32/23.44  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.44  eprover: No such file or directory
% 0.32/23.44  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.44  eprover: No such file or directory
% 0.32/23.45  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.45  eprover: No such file or directory
% 0.32/23.45  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.45  eprover: No such file or directory
% 0.32/23.46  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.46  eprover: No such file or directory
% 0.32/23.47  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.47  eprover: No such file or directory
% 0.32/23.47  eprover: CPU time limit exceeded, terminating
% 0.32/23.47  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.47  eprover: No such file or directory
% 0.32/23.48  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.48  eprover: No such file or directory
% 0.32/23.48  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.48  eprover: No such file or directory
% 0.32/23.49  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.49  eprover: No such file or directory
% 0.32/23.49  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.49  eprover: No such file or directory
% 0.32/23.49  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.49  eprover: No such file or directory
% 0.32/23.50  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.50  eprover: No such file or directory
% 0.32/23.50  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.50  eprover: No such file or directory
% 0.32/23.51  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.51  eprover: No such file or directory
% 0.32/23.51  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.51  eprover: No such file or directory
% 0.32/23.52  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.52  eprover: No such file or directory
% 0.32/23.53  eprover: Cannot stat file /export/starexec/sandbox/solver/bin/../tmp/theBenchmark.p
% 0.32/23.53  eprover: No such file or directory
%------------------------------------------------------------------------------