TSTP Solution File: REL004-1 by Twee---2.4.2

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Twee---2.4.2
% Problem  : REL004-1 : TPTP v8.1.2. Released v4.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof

% Computer : n027.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 : Thu Aug 31 13:43:43 EDT 2023

% Result   : Unsatisfiable 0.20s 0.70s
% Output   : Proof 0.20s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12  % Problem  : REL004-1 : TPTP v8.1.2. Released v4.0.0.
% 0.00/0.13  % Command  : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof
% 0.16/0.34  % Computer : n027.cluster.edu
% 0.16/0.34  % Model    : x86_64 x86_64
% 0.16/0.34  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.16/0.34  % Memory   : 8042.1875MB
% 0.16/0.34  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.16/0.34  % CPULimit : 300
% 0.16/0.34  % WCLimit  : 300
% 0.16/0.34  % DateTime : Fri Aug 25 21:04:49 EDT 2023
% 0.16/0.35  % CPUTime  : 
% 0.20/0.70  Command-line arguments: --no-flatten-goal
% 0.20/0.70  
% 0.20/0.70  % SZS status Unsatisfiable
% 0.20/0.70  
% 0.20/0.73  % SZS output start Proof
% 0.20/0.73  Axiom 1 (converse_idempotence_8): converse(converse(X)) = X.
% 0.20/0.73  Axiom 2 (composition_identity_6): composition(X, one) = X.
% 0.20/0.73  Axiom 3 (maddux1_join_commutativity_1): join(X, Y) = join(Y, X).
% 0.20/0.73  Axiom 4 (def_zero_13): zero = meet(X, complement(X)).
% 0.20/0.73  Axiom 5 (def_top_12): top = join(X, complement(X)).
% 0.20/0.73  Axiom 6 (converse_multiplicativity_10): converse(composition(X, Y)) = composition(converse(Y), converse(X)).
% 0.20/0.73  Axiom 7 (composition_associativity_5): composition(X, composition(Y, Z)) = composition(composition(X, Y), Z).
% 0.20/0.73  Axiom 8 (converse_additivity_9): converse(join(X, Y)) = join(converse(X), converse(Y)).
% 0.20/0.73  Axiom 9 (maddux2_join_associativity_2): join(X, join(Y, Z)) = join(join(X, Y), Z).
% 0.20/0.73  Axiom 10 (maddux4_definiton_of_meet_4): meet(X, Y) = complement(join(complement(X), complement(Y))).
% 0.20/0.73  Axiom 11 (converse_cancellativity_11): join(composition(converse(X), complement(composition(X, Y))), complement(Y)) = complement(Y).
% 0.20/0.73  Axiom 12 (maddux3_a_kind_of_de_Morgan_3): X = join(complement(join(complement(X), complement(Y))), complement(join(complement(X), Y))).
% 0.20/0.73  
% 0.20/0.73  Lemma 13: complement(top) = zero.
% 0.20/0.73  Proof:
% 0.20/0.73    complement(top)
% 0.20/0.73  = { by axiom 5 (def_top_12) }
% 0.20/0.73    complement(join(complement(X), complement(complement(X))))
% 0.20/0.73  = { by axiom 10 (maddux4_definiton_of_meet_4) R->L }
% 0.20/0.73    meet(X, complement(X))
% 0.20/0.73  = { by axiom 4 (def_zero_13) R->L }
% 0.20/0.73    zero
% 0.20/0.73  
% 0.20/0.73  Lemma 14: join(X, join(Y, complement(X))) = join(Y, top).
% 0.20/0.73  Proof:
% 0.20/0.73    join(X, join(Y, complement(X)))
% 0.20/0.73  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.73    join(X, join(complement(X), Y))
% 0.20/0.73  = { by axiom 9 (maddux2_join_associativity_2) }
% 0.20/0.73    join(join(X, complement(X)), Y)
% 0.20/0.73  = { by axiom 5 (def_top_12) R->L }
% 0.20/0.73    join(top, Y)
% 0.20/0.73  = { by axiom 3 (maddux1_join_commutativity_1) }
% 0.20/0.73    join(Y, top)
% 0.20/0.73  
% 0.20/0.73  Lemma 15: composition(converse(one), X) = X.
% 0.20/0.73  Proof:
% 0.20/0.73    composition(converse(one), X)
% 0.20/0.73  = { by axiom 1 (converse_idempotence_8) R->L }
% 0.20/0.73    composition(converse(one), converse(converse(X)))
% 0.20/0.73  = { by axiom 6 (converse_multiplicativity_10) R->L }
% 0.20/0.73    converse(composition(converse(X), one))
% 0.20/0.73  = { by axiom 2 (composition_identity_6) }
% 0.20/0.73    converse(converse(X))
% 0.20/0.74  = { by axiom 1 (converse_idempotence_8) }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 16: join(complement(X), complement(X)) = complement(X).
% 0.20/0.74  Proof:
% 0.20/0.74    join(complement(X), complement(X))
% 0.20/0.74  = { by lemma 15 R->L }
% 0.20/0.74    join(complement(X), composition(converse(one), complement(X)))
% 0.20/0.74  = { by lemma 15 R->L }
% 0.20/0.74    join(complement(X), composition(converse(one), complement(composition(converse(one), X))))
% 0.20/0.74  = { by axiom 2 (composition_identity_6) R->L }
% 0.20/0.74    join(complement(X), composition(converse(one), complement(composition(composition(converse(one), one), X))))
% 0.20/0.74  = { by axiom 7 (composition_associativity_5) R->L }
% 0.20/0.74    join(complement(X), composition(converse(one), complement(composition(converse(one), composition(one, X)))))
% 0.20/0.74  = { by lemma 15 }
% 0.20/0.74    join(complement(X), composition(converse(one), complement(composition(one, X))))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    join(composition(converse(one), complement(composition(one, X))), complement(X))
% 0.20/0.74  = { by axiom 11 (converse_cancellativity_11) }
% 0.20/0.74    complement(X)
% 0.20/0.74  
% 0.20/0.74  Lemma 17: join(top, complement(X)) = top.
% 0.20/0.74  Proof:
% 0.20/0.74    join(top, complement(X))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    join(complement(X), top)
% 0.20/0.74  = { by lemma 14 R->L }
% 0.20/0.74    join(X, join(complement(X), complement(X)))
% 0.20/0.74  = { by lemma 16 }
% 0.20/0.74    join(X, complement(X))
% 0.20/0.74  = { by axiom 5 (def_top_12) R->L }
% 0.20/0.74    top
% 0.20/0.74  
% 0.20/0.74  Lemma 18: join(Y, top) = join(X, top).
% 0.20/0.74  Proof:
% 0.20/0.74    join(Y, top)
% 0.20/0.74  = { by lemma 17 R->L }
% 0.20/0.74    join(Y, join(top, complement(Y)))
% 0.20/0.74  = { by lemma 14 }
% 0.20/0.74    join(top, top)
% 0.20/0.74  = { by lemma 14 R->L }
% 0.20/0.74    join(X, join(top, complement(X)))
% 0.20/0.74  = { by lemma 17 }
% 0.20/0.74    join(X, top)
% 0.20/0.74  
% 0.20/0.74  Lemma 19: join(X, top) = top.
% 0.20/0.74  Proof:
% 0.20/0.74    join(X, top)
% 0.20/0.74  = { by lemma 18 }
% 0.20/0.74    join(join(zero, zero), top)
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    join(top, join(zero, zero))
% 0.20/0.74  = { by lemma 13 R->L }
% 0.20/0.74    join(top, join(zero, complement(top)))
% 0.20/0.74  = { by lemma 13 R->L }
% 0.20/0.74    join(top, join(complement(top), complement(top)))
% 0.20/0.74  = { by lemma 16 }
% 0.20/0.74    join(top, complement(top))
% 0.20/0.74  = { by axiom 5 (def_top_12) R->L }
% 0.20/0.74    top
% 0.20/0.74  
% 0.20/0.74  Lemma 20: join(meet(X, Y), complement(join(complement(X), Y))) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    join(meet(X, Y), complement(join(complement(X), Y)))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) }
% 0.20/0.74    join(complement(join(complement(X), complement(Y))), complement(join(complement(X), Y)))
% 0.20/0.74  = { by axiom 12 (maddux3_a_kind_of_de_Morgan_3) R->L }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 21: join(zero, meet(X, X)) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    join(zero, meet(X, X))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) }
% 0.20/0.74    join(zero, complement(join(complement(X), complement(X))))
% 0.20/0.74  = { by axiom 4 (def_zero_13) }
% 0.20/0.74    join(meet(X, complement(X)), complement(join(complement(X), complement(X))))
% 0.20/0.74  = { by lemma 20 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 22: complement(complement(X)) = meet(X, X).
% 0.20/0.74  Proof:
% 0.20/0.74    complement(complement(X))
% 0.20/0.74  = { by lemma 16 R->L }
% 0.20/0.74    complement(join(complement(X), complement(X)))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) R->L }
% 0.20/0.74    meet(X, X)
% 0.20/0.74  
% 0.20/0.74  Lemma 23: meet(Y, X) = meet(X, Y).
% 0.20/0.74  Proof:
% 0.20/0.74    meet(Y, X)
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) }
% 0.20/0.74    complement(join(complement(Y), complement(X)))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    complement(join(complement(X), complement(Y)))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) R->L }
% 0.20/0.74    meet(X, Y)
% 0.20/0.74  
% 0.20/0.74  Lemma 24: complement(join(zero, complement(X))) = meet(X, top).
% 0.20/0.74  Proof:
% 0.20/0.74    complement(join(zero, complement(X)))
% 0.20/0.74  = { by lemma 13 R->L }
% 0.20/0.74    complement(join(complement(top), complement(X)))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) R->L }
% 0.20/0.74    meet(top, X)
% 0.20/0.74  = { by lemma 23 R->L }
% 0.20/0.74    meet(X, top)
% 0.20/0.74  
% 0.20/0.74  Lemma 25: join(X, join(complement(X), Y)) = top.
% 0.20/0.74  Proof:
% 0.20/0.74    join(X, join(complement(X), Y))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    join(X, join(Y, complement(X)))
% 0.20/0.74  = { by lemma 14 }
% 0.20/0.74    join(Y, top)
% 0.20/0.74  = { by lemma 18 R->L }
% 0.20/0.74    join(Z, top)
% 0.20/0.74  = { by lemma 19 }
% 0.20/0.74    top
% 0.20/0.74  
% 0.20/0.74  Lemma 26: join(X, complement(zero)) = top.
% 0.20/0.74  Proof:
% 0.20/0.74    join(X, complement(zero))
% 0.20/0.74  = { by lemma 21 R->L }
% 0.20/0.74    join(join(zero, meet(X, X)), complement(zero))
% 0.20/0.74  = { by axiom 9 (maddux2_join_associativity_2) R->L }
% 0.20/0.74    join(zero, join(meet(X, X), complement(zero)))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) }
% 0.20/0.74    join(zero, join(complement(zero), meet(X, X)))
% 0.20/0.74  = { by lemma 25 }
% 0.20/0.74    top
% 0.20/0.74  
% 0.20/0.74  Lemma 27: join(meet(X, Y), meet(X, complement(Y))) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    join(meet(X, Y), meet(X, complement(Y)))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    join(meet(X, complement(Y)), meet(X, Y))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) }
% 0.20/0.74    join(meet(X, complement(Y)), complement(join(complement(X), complement(Y))))
% 0.20/0.74  = { by lemma 20 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 28: join(zero, meet(X, top)) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    join(zero, meet(X, top))
% 0.20/0.74  = { by lemma 26 R->L }
% 0.20/0.74    join(zero, meet(X, join(complement(zero), complement(zero))))
% 0.20/0.74  = { by lemma 16 }
% 0.20/0.74    join(zero, meet(X, complement(zero)))
% 0.20/0.74  = { by lemma 13 R->L }
% 0.20/0.74    join(complement(top), meet(X, complement(zero)))
% 0.20/0.74  = { by lemma 26 R->L }
% 0.20/0.74    join(complement(join(complement(X), complement(zero))), meet(X, complement(zero)))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) R->L }
% 0.20/0.74    join(meet(X, zero), meet(X, complement(zero)))
% 0.20/0.74  = { by lemma 27 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 29: join(zero, complement(X)) = complement(X).
% 0.20/0.74  Proof:
% 0.20/0.74    join(zero, complement(X))
% 0.20/0.74  = { by lemma 21 R->L }
% 0.20/0.74    join(zero, complement(join(zero, meet(X, X))))
% 0.20/0.74  = { by lemma 22 R->L }
% 0.20/0.74    join(zero, complement(join(zero, complement(complement(X)))))
% 0.20/0.74  = { by lemma 24 }
% 0.20/0.74    join(zero, meet(complement(X), top))
% 0.20/0.74  = { by lemma 28 }
% 0.20/0.74    complement(X)
% 0.20/0.74  
% 0.20/0.74  Lemma 30: complement(complement(X)) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    complement(complement(X))
% 0.20/0.74  = { by lemma 29 R->L }
% 0.20/0.74    join(zero, complement(complement(X)))
% 0.20/0.74  = { by lemma 22 }
% 0.20/0.74    join(zero, meet(X, X))
% 0.20/0.74  = { by lemma 21 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 31: join(X, zero) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    join(X, zero)
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    join(zero, X)
% 0.20/0.74  = { by lemma 30 R->L }
% 0.20/0.74    join(zero, complement(complement(X)))
% 0.20/0.74  = { by lemma 22 }
% 0.20/0.74    join(zero, meet(X, X))
% 0.20/0.74  = { by lemma 21 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 32: meet(X, X) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    meet(X, X)
% 0.20/0.74  = { by lemma 22 R->L }
% 0.20/0.74    complement(complement(X))
% 0.20/0.74  = { by lemma 30 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 33: meet(X, top) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    meet(X, top)
% 0.20/0.74  = { by lemma 24 R->L }
% 0.20/0.74    complement(join(zero, complement(X)))
% 0.20/0.74  = { by lemma 29 R->L }
% 0.20/0.74    join(zero, complement(join(zero, complement(X))))
% 0.20/0.74  = { by lemma 24 }
% 0.20/0.74    join(zero, meet(X, top))
% 0.20/0.74  = { by lemma 28 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 34: meet(top, X) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    meet(top, X)
% 0.20/0.74  = { by lemma 23 }
% 0.20/0.74    meet(X, top)
% 0.20/0.74  = { by lemma 33 }
% 0.20/0.74    X
% 0.20/0.74  
% 0.20/0.74  Lemma 35: join(complement(X), complement(Y)) = complement(meet(X, Y)).
% 0.20/0.74  Proof:
% 0.20/0.74    join(complement(X), complement(Y))
% 0.20/0.74  = { by lemma 34 R->L }
% 0.20/0.74    meet(top, join(complement(X), complement(Y)))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.74    meet(top, join(complement(Y), complement(X)))
% 0.20/0.74  = { by lemma 23 }
% 0.20/0.74    meet(join(complement(Y), complement(X)), top)
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) }
% 0.20/0.74    complement(join(complement(join(complement(Y), complement(X))), complement(top)))
% 0.20/0.74  = { by axiom 10 (maddux4_definiton_of_meet_4) R->L }
% 0.20/0.74    complement(join(meet(Y, X), complement(top)))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) }
% 0.20/0.74    complement(join(complement(top), meet(Y, X)))
% 0.20/0.74  = { by lemma 23 R->L }
% 0.20/0.74    complement(join(complement(top), meet(X, Y)))
% 0.20/0.74  = { by lemma 13 }
% 0.20/0.74    complement(join(zero, meet(X, Y)))
% 0.20/0.74  = { by lemma 23 R->L }
% 0.20/0.74    complement(join(zero, meet(Y, X)))
% 0.20/0.74  = { by axiom 3 (maddux1_join_commutativity_1) }
% 0.20/0.74    complement(join(meet(Y, X), zero))
% 0.20/0.74  = { by lemma 31 }
% 0.20/0.74    complement(meet(Y, X))
% 0.20/0.74  = { by lemma 23 R->L }
% 0.20/0.74    complement(meet(X, Y))
% 0.20/0.74  
% 0.20/0.74  Lemma 36: converse(join(converse(X), Y)) = join(X, converse(Y)).
% 0.20/0.74  Proof:
% 0.20/0.74    converse(join(converse(X), Y))
% 0.20/0.74  = { by axiom 8 (converse_additivity_9) }
% 0.20/0.74    join(converse(converse(X)), converse(Y))
% 0.20/0.74  = { by axiom 1 (converse_idempotence_8) }
% 0.20/0.74    join(X, converse(Y))
% 0.20/0.74  
% 0.20/0.74  Lemma 37: meet(X, converse(complement(converse(complement(X))))) = X.
% 0.20/0.74  Proof:
% 0.20/0.74    meet(X, converse(complement(converse(complement(X)))))
% 0.20/0.74  = { by lemma 16 R->L }
% 0.20/0.74    meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X))))))
% 0.20/0.74  = { by lemma 31 R->L }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), zero)
% 0.20/0.74  = { by lemma 13 R->L }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(top))
% 0.20/0.74  = { by lemma 25 R->L }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(join(converse(Y), join(complement(converse(Y)), converse(complement(converse(complement(converse(Y)))))))))
% 0.20/0.74  = { by lemma 36 R->L }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(join(converse(Y), converse(join(converse(complement(converse(Y))), complement(converse(complement(converse(Y)))))))))
% 0.20/0.74  = { by axiom 5 (def_top_12) R->L }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(join(converse(Y), converse(top))))
% 0.20/0.74  = { by axiom 8 (converse_additivity_9) R->L }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(converse(join(Y, top))))
% 0.20/0.74  = { by lemma 19 }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(converse(top)))
% 0.20/0.74  = { by lemma 25 R->L }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(converse(join(converse(complement(X)), join(complement(converse(complement(X))), complement(converse(complement(X))))))))
% 0.20/0.74  = { by lemma 36 }
% 0.20/0.74    join(meet(X, converse(join(complement(converse(complement(X))), complement(converse(complement(X)))))), complement(join(complement(X), converse(join(complement(converse(complement(X))), complement(converse(complement(X))))))))
% 0.20/0.74  = { by lemma 20 }
% 0.20/0.75    X
% 0.20/0.75  
% 0.20/0.75  Goal 1 (goals_14): converse(complement(sk1)) = complement(converse(sk1)).
% 0.20/0.75  Proof:
% 0.20/0.75    converse(complement(sk1))
% 0.20/0.75  = { by lemma 32 R->L }
% 0.20/0.75    meet(converse(complement(sk1)), converse(complement(sk1)))
% 0.20/0.75  = { by lemma 22 R->L }
% 0.20/0.75    complement(complement(converse(complement(sk1))))
% 0.20/0.75  = { by axiom 1 (converse_idempotence_8) R->L }
% 0.20/0.75    complement(converse(converse(complement(converse(complement(sk1))))))
% 0.20/0.75  = { by lemma 27 R->L }
% 0.20/0.75    complement(converse(join(meet(converse(complement(converse(complement(sk1)))), sk1), meet(converse(complement(converse(complement(sk1)))), complement(sk1)))))
% 0.20/0.75  = { by lemma 23 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(converse(complement(converse(complement(sk1)))), complement(sk1)))))
% 0.20/0.75  = { by lemma 23 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(complement(sk1), converse(complement(converse(complement(sk1))))))))
% 0.20/0.75  = { by axiom 1 (converse_idempotence_8) R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))))))
% 0.20/0.75  = { by lemma 34 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(converse(converse(complement(sk1))), meet(top, converse(complement(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 23 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(converse(converse(complement(sk1))), meet(converse(complement(converse(complement(sk1)))), top)))))
% 0.20/0.75  = { by lemma 30 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(complement(meet(converse(converse(complement(sk1))), meet(converse(complement(converse(complement(sk1)))), top)))))))
% 0.20/0.75  = { by lemma 23 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(complement(meet(converse(converse(complement(sk1))), meet(top, converse(complement(converse(complement(sk1)))))))))))
% 0.20/0.75  = { by axiom 10 (maddux4_definiton_of_meet_4) }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(complement(meet(converse(converse(complement(sk1))), complement(join(complement(top), complement(converse(complement(converse(complement(sk1)))))))))))))
% 0.20/0.75  = { by lemma 23 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(complement(meet(complement(join(complement(top), complement(converse(complement(converse(complement(sk1))))))), converse(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 29 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(complement(meet(join(zero, complement(join(complement(top), complement(converse(complement(converse(complement(sk1)))))))), converse(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 35 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(join(complement(join(zero, complement(join(complement(top), complement(converse(complement(converse(complement(sk1))))))))), complement(converse(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 24 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(join(meet(join(complement(top), complement(converse(complement(converse(complement(sk1)))))), top), complement(converse(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 33 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(join(join(complement(top), complement(converse(complement(converse(complement(sk1)))))), complement(converse(converse(complement(sk1)))))))))
% 0.20/0.75  = { by axiom 9 (maddux2_join_associativity_2) R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(join(complement(top), join(complement(converse(complement(converse(complement(sk1))))), complement(converse(converse(complement(sk1))))))))))
% 0.20/0.75  = { by lemma 35 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(join(complement(top), complement(meet(converse(complement(converse(complement(sk1)))), converse(converse(complement(sk1))))))))))
% 0.20/0.75  = { by lemma 35 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(complement(meet(top, meet(converse(complement(converse(complement(sk1)))), converse(converse(complement(sk1))))))))))
% 0.20/0.75  = { by lemma 23 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), complement(complement(meet(top, meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1)))))))))))
% 0.20/0.75  = { by lemma 22 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(top, meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1)))))), meet(top, meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))))))))
% 0.20/0.75  = { by lemma 32 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(top, meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 23 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), top))))
% 0.20/0.75  = { by lemma 25 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1)))), join(complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))))), converse(complement(join(complement(converse(complement(converse(complement(converse(complement(sk1))))))), converse(complement(sk1)))))))))))
% 0.20/0.75  = { by axiom 3 (maddux1_join_commutativity_1) R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1)))), join(converse(complement(join(complement(converse(complement(converse(complement(converse(complement(sk1))))))), converse(complement(sk1))))), complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1)))))))))))
% 0.20/0.75  = { by axiom 9 (maddux2_join_associativity_2) }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(join(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1)))), converse(complement(join(complement(converse(complement(converse(complement(converse(complement(sk1))))))), converse(complement(sk1)))))), complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))))))))))
% 0.20/0.75  = { by axiom 8 (converse_additivity_9) R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(converse(join(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))), complement(join(complement(converse(complement(converse(complement(converse(complement(sk1))))))), converse(complement(sk1)))))), complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))))))))))
% 0.20/0.75  = { by axiom 3 (maddux1_join_commutativity_1) }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))))), converse(join(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))), complement(join(complement(converse(complement(converse(complement(converse(complement(sk1))))))), converse(complement(sk1)))))))))))
% 0.20/0.75  = { by lemma 20 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))))), converse(converse(complement(converse(complement(converse(complement(sk1))))))))))))
% 0.20/0.75  = { by axiom 3 (maddux1_join_commutativity_1) }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(converse(converse(complement(converse(complement(converse(complement(sk1))))))), complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))))))))))
% 0.20/0.75  = { by axiom 1 (converse_idempotence_8) }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(complement(converse(complement(converse(complement(sk1))))), complement(converse(meet(converse(complement(converse(complement(converse(complement(sk1)))))), converse(complement(sk1))))))))))
% 0.20/0.75  = { by lemma 23 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(complement(converse(complement(converse(complement(sk1))))), complement(converse(meet(converse(complement(sk1)), converse(complement(converse(complement(converse(complement(sk1))))))))))))))
% 0.20/0.75  = { by lemma 37 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), join(complement(converse(complement(converse(complement(sk1))))), complement(converse(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 35 }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), complement(meet(converse(complement(converse(complement(sk1)))), converse(converse(complement(sk1)))))))))
% 0.20/0.75  = { by lemma 23 R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), meet(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))), complement(meet(converse(converse(complement(sk1))), converse(complement(converse(complement(sk1))))))))))
% 0.20/0.75  = { by axiom 4 (def_zero_13) R->L }
% 0.20/0.75    complement(converse(join(meet(sk1, converse(complement(converse(complement(sk1))))), zero)))
% 0.20/0.75  = { by lemma 31 }
% 0.20/0.75    complement(converse(meet(sk1, converse(complement(converse(complement(sk1)))))))
% 0.20/0.75  = { by lemma 37 }
% 0.20/0.75    complement(converse(sk1))
% 0.20/0.75  % SZS output end Proof
% 0.20/0.75  
% 0.20/0.75  RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------