TSTP Solution File: LCL533+1 by Prover9---1109a

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Prover9---1109a
% Problem  : LCL533+1 : TPTP v8.1.0. Released v3.3.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : tptp2X_and_run_prover9 %d %s

% Computer : n008.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 13:47:25 EDT 2022

% Result   : Theorem 5.77s 6.12s
% Output   : Refutation 5.77s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.06/0.12  % Problem  : LCL533+1 : TPTP v8.1.0. Released v3.3.0.
% 0.06/0.13  % Command  : tptp2X_and_run_prover9 %d %s
% 0.12/0.34  % Computer : n008.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  : 600
% 0.12/0.34  % DateTime : Sat Jul  2 20:21:23 EDT 2022
% 0.12/0.34  % CPUTime  : 
% 0.43/1.02  ============================== Prover9 ===============================
% 0.43/1.02  Prover9 (32) version 2009-11A, November 2009.
% 0.43/1.02  Process 18957 was started by sandbox on n008.cluster.edu,
% 0.43/1.02  Sat Jul  2 20:21:24 2022
% 0.43/1.02  The command was "/export/starexec/sandbox/solver/bin/prover9 -t 300 -f /tmp/Prover9_18804_n008.cluster.edu".
% 0.43/1.02  ============================== end of head ===========================
% 0.43/1.02  
% 0.43/1.02  ============================== INPUT =================================
% 0.43/1.02  
% 0.43/1.02  % Reading from file /tmp/Prover9_18804_n008.cluster.edu
% 0.43/1.02  
% 0.43/1.02  set(prolog_style_variables).
% 0.43/1.02  set(auto2).
% 0.43/1.02      % set(auto2) -> set(auto).
% 0.43/1.02      % set(auto) -> set(auto_inference).
% 0.43/1.02      % set(auto) -> set(auto_setup).
% 0.43/1.02      % set(auto_setup) -> set(predicate_elim).
% 0.43/1.02      % set(auto_setup) -> assign(eq_defs, unfold).
% 0.43/1.02      % set(auto) -> set(auto_limits).
% 0.43/1.02      % set(auto_limits) -> assign(max_weight, "100.000").
% 0.43/1.02      % set(auto_limits) -> assign(sos_limit, 20000).
% 0.43/1.02      % set(auto) -> set(auto_denials).
% 0.43/1.02      % set(auto) -> set(auto_process).
% 0.43/1.02      % set(auto2) -> assign(new_constants, 1).
% 0.43/1.02      % set(auto2) -> assign(fold_denial_max, 3).
% 0.43/1.02      % set(auto2) -> assign(max_weight, "200.000").
% 0.43/1.02      % set(auto2) -> assign(max_hours, 1).
% 0.43/1.02      % assign(max_hours, 1) -> assign(max_seconds, 3600).
% 0.43/1.02      % set(auto2) -> assign(max_seconds, 0).
% 0.43/1.02      % set(auto2) -> assign(max_minutes, 5).
% 0.43/1.02      % assign(max_minutes, 5) -> assign(max_seconds, 300).
% 0.43/1.02      % set(auto2) -> set(sort_initial_sos).
% 0.43/1.02      % set(auto2) -> assign(sos_limit, -1).
% 0.43/1.02      % set(auto2) -> assign(lrs_ticks, 3000).
% 0.43/1.02      % set(auto2) -> assign(max_megs, 400).
% 0.43/1.02      % set(auto2) -> assign(stats, some).
% 0.43/1.02      % set(auto2) -> clear(echo_input).
% 0.43/1.02      % set(auto2) -> set(quiet).
% 0.43/1.02      % set(auto2) -> clear(print_initial_clauses).
% 0.43/1.02      % set(auto2) -> clear(print_given).
% 0.43/1.02  assign(lrs_ticks,-1).
% 0.43/1.02  assign(sos_limit,10000).
% 0.43/1.02  assign(order,kbo).
% 0.43/1.02  set(lex_order_vars).
% 0.43/1.02  clear(print_given).
% 0.43/1.02  
% 0.43/1.02  % formulas(sos).  % not echoed (88 formulas)
% 0.43/1.02  
% 0.43/1.02  ============================== end of input ==========================
% 0.43/1.02  
% 0.43/1.02  % From the command line: assign(max_seconds, 300).
% 0.43/1.02  
% 0.43/1.02  ============================== PROCESS NON-CLAUSAL FORMULAS ==========
% 0.43/1.02  
% 0.43/1.02  % Formulas that are not ordinary clauses:
% 0.43/1.02  1 modus_ponens <-> (all X all Y (is_a_theorem(X) & is_a_theorem(implies(X,Y)) -> is_a_theorem(Y))) # label(modus_ponens) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  2 substitution_of_equivalents <-> (all X all Y (is_a_theorem(equiv(X,Y)) -> X = Y)) # label(substitution_of_equivalents) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  3 modus_tollens <-> (all X all Y is_a_theorem(implies(implies(not(Y),not(X)),implies(X,Y)))) # label(modus_tollens) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  4 implies_1 <-> (all X all Y is_a_theorem(implies(X,implies(Y,X)))) # label(implies_1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  5 implies_2 <-> (all X all Y is_a_theorem(implies(implies(X,implies(X,Y)),implies(X,Y)))) # label(implies_2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  6 implies_3 <-> (all X all Y all Z is_a_theorem(implies(implies(X,Y),implies(implies(Y,Z),implies(X,Z))))) # label(implies_3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  7 and_1 <-> (all X all Y is_a_theorem(implies(and(X,Y),X))) # label(and_1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  8 and_2 <-> (all X all Y is_a_theorem(implies(and(X,Y),Y))) # label(and_2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  9 and_3 <-> (all X all Y is_a_theorem(implies(X,implies(Y,and(X,Y))))) # label(and_3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  10 or_1 <-> (all X all Y is_a_theorem(implies(X,or(X,Y)))) # label(or_1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  11 or_2 <-> (all X all Y is_a_theorem(implies(Y,or(X,Y)))) # label(or_2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  12 or_3 <-> (all X all Y all Z is_a_theorem(implies(implies(X,Z),implies(implies(Y,Z),implies(or(X,Y),Z))))) # label(or_3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  13 equivalence_1 <-> (all X all Y is_a_theorem(implies(equiv(X,Y),implies(X,Y)))) # label(equivalence_1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  14 equivalence_2 <-> (all X all Y is_a_theorem(implies(equiv(X,Y),implies(Y,X)))) # label(equivalence_2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  15 equivalence_3 <-> (all X all Y is_a_theorem(implies(implies(X,Y),implies(implies(Y,X),equiv(X,Y))))) # label(equivalence_3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  16 kn1 <-> (all P is_a_theorem(implies(P,and(P,P)))) # label(kn1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  17 kn2 <-> (all P all Q is_a_theorem(implies(and(P,Q),P))) # label(kn2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  18 kn3 <-> (all P all Q all R is_a_theorem(implies(implies(P,Q),implies(not(and(Q,R)),not(and(R,P)))))) # label(kn3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  19 cn1 <-> (all P all Q all R is_a_theorem(implies(implies(P,Q),implies(implies(Q,R),implies(P,R))))) # label(cn1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  20 cn2 <-> (all P all Q is_a_theorem(implies(P,implies(not(P),Q)))) # label(cn2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  21 cn3 <-> (all P is_a_theorem(implies(implies(not(P),P),P))) # label(cn3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  22 r1 <-> (all P is_a_theorem(implies(or(P,P),P))) # label(r1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  23 r2 <-> (all P all Q is_a_theorem(implies(Q,or(P,Q)))) # label(r2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  24 r3 <-> (all P all Q is_a_theorem(implies(or(P,Q),or(Q,P)))) # label(r3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  25 r4 <-> (all P all Q all R is_a_theorem(implies(or(P,or(Q,R)),or(Q,or(P,R))))) # label(r4) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  26 r5 <-> (all P all Q all R is_a_theorem(implies(implies(Q,R),implies(or(P,Q),or(P,R))))) # label(r5) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  27 op_or -> (all X all Y or(X,Y) = not(and(not(X),not(Y)))) # label(op_or) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  28 op_and -> (all X all Y and(X,Y) = not(or(not(X),not(Y)))) # label(op_and) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  29 op_implies_and -> (all X all Y implies(X,Y) = not(and(X,not(Y)))) # label(op_implies_and) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  30 op_implies_or -> (all X all Y implies(X,Y) = or(not(X),Y)) # label(op_implies_or) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  31 op_equiv -> (all X all Y equiv(X,Y) = and(implies(X,Y),implies(Y,X))) # label(op_equiv) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  32 necessitation <-> (all X (is_a_theorem(X) -> is_a_theorem(necessarily(X)))) # label(necessitation) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  33 modus_ponens_strict_implies <-> (all X all Y (is_a_theorem(X) & is_a_theorem(strict_implies(X,Y)) -> is_a_theorem(Y))) # label(modus_ponens_strict_implies) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  34 adjunction <-> (all X all Y (is_a_theorem(X) & is_a_theorem(Y) -> is_a_theorem(and(X,Y)))) # label(adjunction) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  35 substitution_strict_equiv <-> (all X all Y (is_a_theorem(strict_equiv(X,Y)) -> X = Y)) # label(substitution_strict_equiv) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  36 axiom_K <-> (all X all Y is_a_theorem(implies(necessarily(implies(X,Y)),implies(necessarily(X),necessarily(Y))))) # label(axiom_K) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  37 axiom_M <-> (all X is_a_theorem(implies(necessarily(X),X))) # label(axiom_M) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  38 axiom_4 <-> (all X is_a_theorem(implies(necessarily(X),necessarily(necessarily(X))))) # label(axiom_4) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  39 axiom_B <-> (all X is_a_theorem(implies(X,necessarily(possibly(X))))) # label(axiom_B) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  40 axiom_5 <-> (all X is_a_theorem(implies(possibly(X),necessarily(possibly(X))))) # label(axiom_5) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.02  41 axiom_s1 <-> (all X all Y all Z is_a_theorem(implies(and(necessarily(implies(X,Y)),necessarily(implies(Y,Z))),necessarily(implies(X,Z))))) # label(axiom_s1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  42 axiom_s2 <-> (all P all Q is_a_theorem(strict_implies(possibly(and(P,Q)),and(possibly(P),possibly(Q))))) # label(axiom_s2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  43 axiom_s3 <-> (all X all Y is_a_theorem(strict_implies(strict_implies(X,Y),strict_implies(not(possibly(Y)),not(possibly(X)))))) # label(axiom_s3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  44 axiom_s4 <-> (all X is_a_theorem(strict_implies(necessarily(X),necessarily(necessarily(X))))) # label(axiom_s4) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  45 axiom_m1 <-> (all X all Y is_a_theorem(strict_implies(and(X,Y),and(Y,X)))) # label(axiom_m1) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  46 axiom_m2 <-> (all X all Y is_a_theorem(strict_implies(and(X,Y),X))) # label(axiom_m2) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  47 axiom_m3 <-> (all X all Y all Z is_a_theorem(strict_implies(and(and(X,Y),Z),and(X,and(Y,Z))))) # label(axiom_m3) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  48 axiom_m4 <-> (all X is_a_theorem(strict_implies(X,and(X,X)))) # label(axiom_m4) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  49 axiom_m5 <-> (all X all Y all Z is_a_theorem(strict_implies(and(strict_implies(X,Y),strict_implies(Y,Z)),strict_implies(X,Z)))) # label(axiom_m5) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  50 axiom_m6 <-> (all X is_a_theorem(strict_implies(X,possibly(X)))) # label(axiom_m6) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  51 axiom_m7 <-> (all P all Q is_a_theorem(strict_implies(possibly(and(P,Q)),P))) # label(axiom_m7) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  52 axiom_m8 <-> (all P all Q is_a_theorem(strict_implies(strict_implies(P,Q),strict_implies(possibly(P),possibly(Q))))) # label(axiom_m8) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  53 axiom_m9 <-> (all X is_a_theorem(strict_implies(possibly(possibly(X)),possibly(X)))) # label(axiom_m9) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  54 axiom_m10 <-> (all X is_a_theorem(strict_implies(possibly(X),necessarily(possibly(X))))) # label(axiom_m10) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  55 op_possibly -> (all X possibly(X) = not(necessarily(not(X)))) # label(op_possibly) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  56 op_necessarily -> (all X necessarily(X) = not(possibly(not(X)))) # label(op_necessarily) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  57 op_strict_implies -> (all X all Y strict_implies(X,Y) = necessarily(implies(X,Y))) # label(op_strict_implies) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  58 op_strict_equiv -> (all X all Y strict_equiv(X,Y) = and(strict_implies(X,Y),strict_implies(Y,X))) # label(op_strict_equiv) # label(axiom) # label(non_clause).  [assumption].
% 0.43/1.05  
% 0.43/1.05  ============================== end of process non-clausal formulas ===
% 0.43/1.05  
% 0.43/1.05  ============================== PROCESS INITIAL CLAUSES ===============
% 0.43/1.05  
% 0.43/1.05  ============================== PREDICATE ELIMINATION =================
% 0.43/1.05  
% 0.43/1.05  ============================== end predicate elimination =============
% 0.43/1.05  
% 0.43/1.05  Auto_denials:  (non-Horn, no changes).
% 0.43/1.05  
% 0.43/1.05  Term ordering decisions:
% 0.43/1.05  Function symbol KB weights:  c1=1. c2=1. c3=1. c4=1. c5=1. c6=1. c7=1. c8=1. c9=1. c10=1. c11=1. c12=1. c13=1. c14=1. c15=1. c16=1. c17=1. c18=1. c19=1. c20=1. c21=1. c22=1. c23=1. c24=1. c25=1. c26=1. c27=1. c28=1. c29=1. c30=1. c31=1. c32=1. c33=1. c34=1. c35=1. c36=1. c37=1. c38=1. c39=1. c40=1. c41=1. c42=1. c43=1. c44=1. c45=1. c46=1. c47=1. c48=1. c49=1. c50=1. c51=1. c52=1. c53=1. c54=1. c55=1. c56=1. c57=1. c58=1. c59=1. c60=1. c61=1. c62=1. c63=1. c64=1. c65=1. c66=1. c67=1. c68=1. c69=1. c70=1. c71=1. c72=1. c73=1. c74=1. c75=1. c76=1. c77=1. c78=1. c79=1. c80=1. c81=1. c82=1. c83=1. c84=1. c85=1. c86=1. c87=1. c88=1. c89=1. c90=1. c91=1. c92=1. c93=1. c94=1. implies=1. and=1. strict_implies=1. or=1. equiv=1. strict_equiv=1. necessarily=1. possibly=1. not=1.
% 0.43/1.05  
% 0.43/1.05  ============================== end of process initial clauses ========
% 0.43/1.05  
% 0.43/1.05  ============================== CLAUSES FOR SEARCH ====================
% 5.77/6.12  
% 5.77/6.12  ============================== end of clauses for search =============
% 5.77/6.12  
% 5.77/6.12  ============================== SEARCH ================================
% 5.77/6.12  
% 5.77/6.12  % Starting search at 0.05 seconds.
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=22.000, iters=3404
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=20.000, iters=3356
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=19.000, iters=3396
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=18.000, iters=3340
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=16.000, iters=3351
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=15.000, iters=3407
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=14.000, iters=3468
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=13.000, iters=3404
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=12.000, iters=3336
% 5.77/6.12  
% 5.77/6.12  Low Water (displace): id=15421, wt=34.000
% 5.77/6.12  
% 5.77/6.12  Low Water (displace): id=14835, wt=32.000
% 5.77/6.12  
% 5.77/6.12  Low Water (displace): id=15422, wt=29.000
% 5.77/6.12  
% 5.77/6.12  Low Water (displace): id=15219, wt=28.000
% 5.77/6.12  
% 5.77/6.12  Low Water (displace): id=20700, wt=10.000
% 5.77/6.12  
% 5.77/6.12  Low Water (displace): id=20800, wt=9.000
% 5.77/6.12  
% 5.77/6.12  Low Water (keep): wt=11.000, iters=3339
% 5.77/6.12  
% 5.77/6.12  ============================== PROOF =================================
% 5.77/6.12  % SZS status Theorem
% 5.77/6.12  % SZS output start Refutation
% 5.77/6.12  
% 5.77/6.12  % Proof 1 at 5.04 (+ 0.07) seconds.
% 5.77/6.12  % Length of proof is 81.
% 5.77/6.12  % Level of proof is 13.
% 5.77/6.12  % Maximum clause weight is 15.000.
% 5.77/6.12  % Given clauses 2343.
% 5.77/6.12  
% 5.77/6.12  1 modus_ponens <-> (all X all Y (is_a_theorem(X) & is_a_theorem(implies(X,Y)) -> is_a_theorem(Y))) # label(modus_ponens) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  2 substitution_of_equivalents <-> (all X all Y (is_a_theorem(equiv(X,Y)) -> X = Y)) # label(substitution_of_equivalents) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  3 modus_tollens <-> (all X all Y is_a_theorem(implies(implies(not(Y),not(X)),implies(X,Y)))) # label(modus_tollens) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  5 implies_2 <-> (all X all Y is_a_theorem(implies(implies(X,implies(X,Y)),implies(X,Y)))) # label(implies_2) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  7 and_1 <-> (all X all Y is_a_theorem(implies(and(X,Y),X))) # label(and_1) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  9 and_3 <-> (all X all Y is_a_theorem(implies(X,implies(Y,and(X,Y))))) # label(and_3) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  12 or_3 <-> (all X all Y all Z is_a_theorem(implies(implies(X,Z),implies(implies(Y,Z),implies(or(X,Y),Z))))) # label(or_3) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  15 equivalence_3 <-> (all X all Y is_a_theorem(implies(implies(X,Y),implies(implies(Y,X),equiv(X,Y))))) # label(equivalence_3) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  27 op_or -> (all X all Y or(X,Y) = not(and(not(X),not(Y)))) # label(op_or) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  29 op_implies_and -> (all X all Y implies(X,Y) = not(and(X,not(Y)))) # label(op_implies_and) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  32 necessitation <-> (all X (is_a_theorem(X) -> is_a_theorem(necessarily(X)))) # label(necessitation) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  37 axiom_M <-> (all X is_a_theorem(implies(necessarily(X),X))) # label(axiom_M) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  50 axiom_m6 <-> (all X is_a_theorem(strict_implies(X,possibly(X)))) # label(axiom_m6) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  55 op_possibly -> (all X possibly(X) = not(necessarily(not(X)))) # label(op_possibly) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  57 op_strict_implies -> (all X all Y strict_implies(X,Y) = necessarily(implies(X,Y))) # label(op_strict_implies) # label(axiom) # label(non_clause).  [assumption].
% 5.77/6.12  59 -modus_ponens | -is_a_theorem(A) | -is_a_theorem(implies(A,B)) | is_a_theorem(B) # label(modus_ponens) # label(axiom).  [clausify(1)].
% 5.77/6.12  63 -substitution_of_equivalents | -is_a_theorem(equiv(A,B)) | B = A # label(substitution_of_equivalents) # label(axiom).  [clausify(2)].
% 5.77/6.12  66 -modus_tollens | is_a_theorem(implies(implies(not(A),not(B)),implies(B,A))) # label(modus_tollens) # label(axiom).  [clausify(3)].
% 5.77/6.12  70 -implies_2 | is_a_theorem(implies(implies(A,implies(A,B)),implies(A,B))) # label(implies_2) # label(axiom).  [clausify(5)].
% 5.77/6.12  74 -and_1 | is_a_theorem(implies(and(A,B),A)) # label(and_1) # label(axiom).  [clausify(7)].
% 5.77/6.12  78 -and_3 | is_a_theorem(implies(A,implies(B,and(A,B)))) # label(and_3) # label(axiom).  [clausify(9)].
% 5.77/6.12  84 -or_3 | is_a_theorem(implies(implies(A,B),implies(implies(C,B),implies(or(A,C),B)))) # label(or_3) # label(axiom).  [clausify(12)].
% 5.77/6.12  90 -equivalence_3 | is_a_theorem(implies(implies(A,B),implies(implies(B,A),equiv(A,B)))) # label(equivalence_3) # label(axiom).  [clausify(15)].
% 5.77/6.12  114 -op_or | or(A,B) = not(and(not(A),not(B))) # label(op_or) # label(axiom).  [clausify(27)].
% 5.77/6.12  115 -op_or | not(and(not(A),not(B))) = or(A,B).  [copy(114),flip(b)].
% 5.77/6.12  118 -op_implies_and | not(and(A,not(B))) = implies(A,B) # label(op_implies_and) # label(axiom).  [clausify(29)].
% 5.77/6.12  121 op_or # label(hilbert_op_or) # label(axiom).  [assumption].
% 5.77/6.12  122 op_implies_and # label(hilbert_op_implies_and) # label(axiom).  [assumption].
% 5.77/6.12  124 modus_ponens # label(hilbert_modus_ponens) # label(axiom).  [assumption].
% 5.77/6.12  125 modus_tollens # label(hilbert_modus_tollens) # label(axiom).  [assumption].
% 5.77/6.12  127 implies_2 # label(hilbert_implies_2) # label(axiom).  [assumption].
% 5.77/6.12  129 and_1 # label(hilbert_and_1) # label(axiom).  [assumption].
% 5.77/6.12  131 and_3 # label(hilbert_and_3) # label(axiom).  [assumption].
% 5.77/6.12  134 or_3 # label(hilbert_or_3) # label(axiom).  [assumption].
% 5.77/6.12  137 equivalence_3 # label(hilbert_equivalence_3) # label(axiom).  [assumption].
% 5.77/6.12  138 substitution_of_equivalents # label(substitution_of_equivalents) # label(axiom).  [assumption].
% 5.77/6.12  139 -necessitation | -is_a_theorem(A) | is_a_theorem(necessarily(A)) # label(necessitation) # label(axiom).  [clausify(32)].
% 5.77/6.12  155 -axiom_M | is_a_theorem(implies(necessarily(A),A)) # label(axiom_M) # label(axiom).  [clausify(37)].
% 5.77/6.12  182 axiom_m6 | -is_a_theorem(strict_implies(c88,possibly(c88))) # label(axiom_m6) # label(axiom).  [clausify(50)].
% 5.77/6.12  191 -op_possibly | possibly(A) = not(necessarily(not(A))) # label(op_possibly) # label(axiom).  [clausify(55)].
% 5.77/6.12  192 -op_possibly | not(necessarily(not(A))) = possibly(A).  [copy(191),flip(b)].
% 5.77/6.12  195 -op_strict_implies | strict_implies(A,B) = necessarily(implies(A,B)) # label(op_strict_implies) # label(axiom).  [clausify(57)].
% 5.77/6.12  196 -op_strict_implies | necessarily(implies(A,B)) = strict_implies(A,B).  [copy(195),flip(b)].
% 5.77/6.12  199 op_possibly # label(km5_op_possibly) # label(axiom).  [assumption].
% 5.77/6.12  200 necessitation # label(km5_necessitation) # label(axiom).  [assumption].
% 5.77/6.12  202 axiom_M # label(km5_axiom_M) # label(axiom).  [assumption].
% 5.77/6.12  205 op_strict_implies # label(s1_0_op_strict_implies) # label(axiom).  [assumption].
% 5.77/6.12  207 -axiom_m6 # label(s1_0_m6s3m9b_axiom_m6) # label(negated_conjecture).  [assumption].
% 5.77/6.12  208 not(and(not(A),not(B))) = or(A,B).  [back_unit_del(115),unit_del(a,121)].
% 5.77/6.12  209 not(and(A,not(B))) = implies(A,B).  [back_unit_del(118),unit_del(a,122)].
% 5.77/6.12  211 -is_a_theorem(A) | -is_a_theorem(implies(A,B)) | is_a_theorem(B).  [back_unit_del(59),unit_del(a,124)].
% 5.77/6.12  212 is_a_theorem(implies(implies(not(A),not(B)),implies(B,A))).  [back_unit_del(66),unit_del(a,125)].
% 5.77/6.12  214 is_a_theorem(implies(implies(A,implies(A,B)),implies(A,B))).  [back_unit_del(70),unit_del(a,127)].
% 5.77/6.12  216 is_a_theorem(implies(and(A,B),A)).  [back_unit_del(74),unit_del(a,129)].
% 5.77/6.12  218 is_a_theorem(implies(A,implies(B,and(A,B)))).  [back_unit_del(78),unit_del(a,131)].
% 5.77/6.12  221 is_a_theorem(implies(implies(A,B),implies(implies(C,B),implies(or(A,C),B)))).  [back_unit_del(84),unit_del(a,134)].
% 5.77/6.12  224 is_a_theorem(implies(implies(A,B),implies(implies(B,A),equiv(A,B)))).  [back_unit_del(90),unit_del(a,137)].
% 5.77/6.12  225 -is_a_theorem(equiv(A,B)) | B = A.  [back_unit_del(63),unit_del(a,138)].
% 5.77/6.12  227 not(necessarily(not(A))) = possibly(A).  [back_unit_del(192),unit_del(a,199)].
% 5.77/6.12  228 -is_a_theorem(A) | is_a_theorem(necessarily(A)).  [back_unit_del(139),unit_del(a,200)].
% 5.77/6.12  230 is_a_theorem(implies(necessarily(A),A)).  [back_unit_del(155),unit_del(a,202)].
% 5.77/6.12  232 necessarily(implies(A,B)) = strict_implies(A,B).  [back_unit_del(196),unit_del(a,205)].
% 5.77/6.12  234 -is_a_theorem(strict_implies(c88,possibly(c88))).  [back_unit_del(182),unit_del(a,207)].
% 5.77/6.12  235 implies(not(A),B) = or(A,B).  [back_rewrite(208),rewrite([209(4)])].
% 5.77/6.12  242 is_a_theorem(implies(or(A,not(B)),implies(B,A))).  [back_rewrite(212),rewrite([235(3)])].
% 5.77/6.12  258 -is_a_theorem(implies(A,implies(A,B))) | is_a_theorem(implies(A,B)).  [resolve(214,a,211,b)].
% 5.77/6.12  288 -is_a_theorem(implies(A,B)) | is_a_theorem(implies(implies(B,A),equiv(A,B))).  [resolve(224,a,211,b)].
% 5.77/6.12  341 or(and(A,not(B)),C) = implies(implies(A,B),C).  [para(209(a,1),235(a,1,1)),flip(a)].
% 5.77/6.12  370 -is_a_theorem(or(A,not(B))) | is_a_theorem(implies(B,A)).  [resolve(242,a,211,b)].
% 5.77/6.12  855 is_a_theorem(implies(implies(A,B),implies(or(A,A),B))).  [resolve(258,a,221,a)].
% 5.77/6.12  856 is_a_theorem(implies(A,and(A,A))).  [resolve(258,a,218,a)].
% 5.77/6.12  3916 is_a_theorem(implies(implies(and(A,A),A),equiv(A,and(A,A)))).  [resolve(288,a,856,a)].
% 5.77/6.12  15896 -is_a_theorem(implies(A,B)) | is_a_theorem(implies(or(A,A),B)).  [resolve(855,a,211,b)].
% 5.77/6.12  21960 is_a_theorem(equiv(A,and(A,A))).  [resolve(3916,a,211,b),unit_del(a,216)].
% 5.77/6.12  21991 and(A,A) = A.  [resolve(21960,a,225,a)].
% 5.77/6.12  22002 implies(or(A,A),B) = or(not(A),B).  [para(21991(a,1),341(a,1,1)),rewrite([235(4)]),flip(a)].
% 5.77/6.12  22068 -is_a_theorem(implies(A,B)) | is_a_theorem(or(not(A),B)).  [back_rewrite(15896),rewrite([22002(4)])].
% 5.77/6.12  27651 is_a_theorem(or(not(necessarily(A)),A)).  [resolve(22068,a,230,a)].
% 5.77/6.12  27717 is_a_theorem(implies(A,possibly(A))).  [resolve(27651,a,370,a),rewrite([227(3)])].
% 5.77/6.12  27767 is_a_theorem(strict_implies(A,possibly(A))).  [resolve(27717,a,228,a),rewrite([232(3)])].
% 5.77/6.12  27768 $F.  [resolve(27767,a,234,a)].
% 5.77/6.12  
% 5.77/6.12  % SZS output end Refutation
% 5.77/6.12  ============================== end of proof ==========================
% 5.77/6.12  
% 5.77/6.12  ============================== STATISTICS ============================
% 5.77/6.12  
% 5.77/6.12  Given=2343. Generated=120330. Kept=27703. proofs=1.
% 5.77/6.12  Usable=1709. Sos=9997. Demods=60. Limbo=40, Disabled=16102. Hints=0.
% 5.77/6.12  Megabytes=21.73.
% 5.77/6.12  User_CPU=5.04, System_CPU=0.07, Wall_clock=5.
% 5.77/6.12  
% 5.77/6.12  ============================== end of statistics =====================
% 5.77/6.12  
% 5.77/6.12  ============================== end of search =========================
% 5.77/6.12  
% 5.77/6.12  THEOREM PROVED
% 5.77/6.12  % SZS status Theorem
% 5.77/6.12  
% 5.77/6.12  Exiting with 1 proof.
% 5.77/6.12  
% 5.77/6.12  Process 18957 exit (max_proofs) Sat Jul  2 20:21:29 2022
% 5.77/6.12  Prover9 interrupted
%------------------------------------------------------------------------------