TSTP Solution File: LAT164-1 by Twee---2.4.2
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- Process Solution
%------------------------------------------------------------------------------
% File : Twee---2.4.2
% Problem : LAT164-1 : TPTP v8.1.2. Released v3.1.0.
% 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 : n001.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 06:27:37 EDT 2023
% Result : Unsatisfiable 7.57s 1.57s
% Output : Proof 9.31s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13 % Problem : LAT164-1 : TPTP v8.1.2. Released v3.1.0.
% 0.00/0.14 % Command : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof
% 0.17/0.36 % Computer : n001.cluster.edu
% 0.17/0.36 % Model : x86_64 x86_64
% 0.17/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.36 % Memory : 8042.1875MB
% 0.17/0.36 % OS : Linux 3.10.0-693.el7.x86_64
% 0.17/0.36 % CPULimit : 300
% 0.17/0.36 % WCLimit : 300
% 0.17/0.36 % DateTime : Thu Aug 24 09:06:10 EDT 2023
% 0.17/0.36 % CPUTime :
% 7.57/1.57 Command-line arguments: --kbo-weight0 --lhs-weight 5 --flip-ordering --normalise-queue-percent 10 --cp-renormalise-threshold 10 --goal-heuristic
% 7.57/1.57
% 7.57/1.57 % SZS status Unsatisfiable
% 7.57/1.57
% 9.31/1.61 % SZS output start Proof
% 9.31/1.61 Axiom 1 (commutativity_of_meet): meet(X, Y) = meet(Y, X).
% 9.31/1.61 Axiom 2 (idempotence_of_join): join(X, X) = X.
% 9.31/1.61 Axiom 3 (commutativity_of_join): join(X, Y) = join(Y, X).
% 9.31/1.61 Axiom 4 (absorption1): meet(X, join(X, Y)) = X.
% 9.31/1.61 Axiom 5 (associativity_of_meet): meet(meet(X, Y), Z) = meet(X, meet(Y, Z)).
% 9.31/1.61 Axiom 6 (absorption2): join(X, meet(X, Y)) = X.
% 9.31/1.61 Axiom 7 (associativity_of_join): join(join(X, Y), Z) = join(X, join(Y, Z)).
% 9.31/1.61 Axiom 8 (equation_H76): meet(X, join(Y, meet(Z, join(Y, W)))) = meet(X, join(Y, meet(Z, join(W, meet(X, Y))))).
% 9.31/1.61
% 9.31/1.61 Lemma 9: meet(X, join(Y, X)) = X.
% 9.31/1.61 Proof:
% 9.31/1.61 meet(X, join(Y, X))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 meet(X, join(X, Y))
% 9.31/1.61 = { by axiom 4 (absorption1) }
% 9.31/1.61 X
% 9.31/1.61
% 9.31/1.61 Lemma 10: meet(X, meet(X, Y)) = meet(X, Y).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(X, meet(X, Y))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) R->L }
% 9.31/1.61 meet(meet(X, Y), X)
% 9.31/1.61 = { by axiom 6 (absorption2) R->L }
% 9.31/1.61 meet(meet(X, Y), join(X, meet(X, Y)))
% 9.31/1.61 = { by lemma 9 }
% 9.31/1.61 meet(X, Y)
% 9.31/1.61
% 9.31/1.61 Lemma 11: meet(Y, meet(X, Z)) = meet(X, meet(Y, Z)).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(Y, meet(X, Z))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) R->L }
% 9.31/1.61 meet(meet(X, Z), Y)
% 9.31/1.61 = { by axiom 5 (associativity_of_meet) }
% 9.31/1.61 meet(X, meet(Z, Y))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) }
% 9.31/1.61 meet(X, meet(Y, Z))
% 9.31/1.61
% 9.31/1.61 Lemma 12: join(X, meet(Y, X)) = X.
% 9.31/1.61 Proof:
% 9.31/1.61 join(X, meet(Y, X))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) R->L }
% 9.31/1.61 join(X, meet(X, Y))
% 9.31/1.61 = { by axiom 6 (absorption2) }
% 9.31/1.61 X
% 9.31/1.61
% 9.31/1.61 Lemma 13: join(X, join(X, Y)) = join(X, Y).
% 9.31/1.61 Proof:
% 9.31/1.61 join(X, join(X, Y))
% 9.31/1.61 = { by axiom 7 (associativity_of_join) R->L }
% 9.31/1.61 join(join(X, X), Y)
% 9.31/1.61 = { by axiom 2 (idempotence_of_join) }
% 9.31/1.61 join(X, Y)
% 9.31/1.61
% 9.31/1.61 Lemma 14: join(Y, join(X, Z)) = join(X, join(Y, Z)).
% 9.31/1.61 Proof:
% 9.31/1.61 join(Y, join(X, Z))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 join(join(X, Z), Y)
% 9.31/1.61 = { by axiom 7 (associativity_of_join) }
% 9.31/1.61 join(X, join(Z, Y))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) }
% 9.31/1.61 join(X, join(Y, Z))
% 9.31/1.61
% 9.31/1.61 Lemma 15: join(meet(X, Y), Y) = Y.
% 9.31/1.61 Proof:
% 9.31/1.61 join(meet(X, Y), Y)
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 join(Y, meet(X, Y))
% 9.31/1.61 = { by lemma 12 }
% 9.31/1.61 Y
% 9.31/1.61
% 9.31/1.61 Lemma 16: meet(X, join(Y, meet(Z, join(X, Y)))) = meet(X, join(Y, meet(X, Z))).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(X, join(Y, meet(Z, join(X, Y))))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 meet(X, join(Y, meet(Z, join(Y, X))))
% 9.31/1.61 = { by axiom 8 (equation_H76) }
% 9.31/1.61 meet(X, join(Y, meet(Z, join(X, meet(X, Y)))))
% 9.31/1.61 = { by axiom 6 (absorption2) }
% 9.31/1.61 meet(X, join(Y, meet(Z, X)))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) }
% 9.31/1.61 meet(X, join(Y, meet(X, Z)))
% 9.31/1.61
% 9.31/1.61 Lemma 17: meet(join(X, Y), join(Y, join(Z, X))) = join(Y, X).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(join(X, Y), join(Y, join(Z, X)))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 meet(join(Y, X), join(Y, join(Z, X)))
% 9.31/1.61 = { by lemma 14 }
% 9.31/1.61 meet(join(Y, X), join(Z, join(Y, X)))
% 9.31/1.61 = { by lemma 9 }
% 9.31/1.61 join(Y, X)
% 9.31/1.61
% 9.31/1.61 Lemma 18: meet(join(X, Y), join(Y, meet(X, Z))) = join(Y, meet(X, Z)).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(join(X, Y), join(Y, meet(X, Z)))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) R->L }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(X, Y))
% 9.31/1.61 = { by lemma 12 R->L }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(X, Y))))
% 9.31/1.61 = { by lemma 13 R->L }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(X, join(X, Y)))))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), X))))
% 9.31/1.61 = { by axiom 4 (absorption1) R->L }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(X, join(X, Y))))))
% 9.31/1.61 = { by lemma 12 R->L }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(X, join(join(X, Y), meet(Z, join(X, Y))))))))
% 9.31/1.61 = { by lemma 13 R->L }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(X, join(join(X, Y), meet(Z, join(X, join(X, Y)))))))))
% 9.31/1.61 = { by lemma 16 }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(X, join(join(X, Y), meet(X, Z)))))))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(X, join(meet(X, Z), join(X, Y)))))))
% 9.31/1.61 = { by lemma 16 }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(meet(X, Z), X)))))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(X, meet(X, Z))))))
% 9.31/1.61 = { by lemma 10 }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(meet(X, Z), join(join(X, Y), meet(X, Z)))))
% 9.31/1.61 = { by lemma 9 }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(join(X, Y), meet(X, Z)))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) }
% 9.31/1.61 meet(join(Y, meet(X, Z)), join(meet(X, Z), join(X, Y)))
% 9.31/1.61 = { by lemma 17 }
% 9.31/1.61 join(meet(X, Z), Y)
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) }
% 9.31/1.61 join(Y, meet(X, Z))
% 9.31/1.61
% 9.31/1.61 Lemma 19: meet(join(X, Y), join(join(Z, X), Y)) = join(Y, X).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(join(X, Y), join(join(Z, X), Y))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 meet(join(X, Y), join(Y, join(Z, X)))
% 9.31/1.61 = { by lemma 17 }
% 9.31/1.61 join(Y, X)
% 9.31/1.61
% 9.31/1.61 Lemma 20: meet(X, join(Y, meet(Z, join(W, meet(X, Y))))) = meet(X, join(Y, meet(Z, join(W, Y)))).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(X, join(Y, meet(Z, join(W, meet(X, Y)))))
% 9.31/1.61 = { by axiom 8 (equation_H76) R->L }
% 9.31/1.61 meet(X, join(Y, meet(Z, join(Y, W))))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) }
% 9.31/1.61 meet(X, join(Y, meet(Z, join(W, Y))))
% 9.31/1.61
% 9.31/1.61 Goal 1 (prove_H6): meet(a, join(b, meet(a, c))) = meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))).
% 9.31/1.61 Proof:
% 9.31/1.61 meet(a, join(b, meet(a, c)))
% 9.31/1.61 = { by lemma 10 R->L }
% 9.31/1.61 meet(a, meet(a, join(b, meet(a, c))))
% 9.31/1.61 = { by axiom 4 (absorption1) R->L }
% 9.31/1.61 meet(a, meet(meet(a, join(b, meet(a, c))), join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))))
% 9.31/1.61 = { by lemma 11 R->L }
% 9.31/1.61 meet(meet(a, join(b, meet(a, c))), meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))))
% 9.31/1.61 = { by axiom 1 (commutativity_of_meet) }
% 9.31/1.61 meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), meet(a, join(b, meet(a, c))))
% 9.31/1.61 = { by lemma 11 }
% 9.31/1.61 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(b, meet(a, c))))
% 9.31/1.61 = { by lemma 15 R->L }
% 9.31/1.61 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(meet(a, join(b, meet(a, c))), join(b, meet(a, c)))))
% 9.31/1.61 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.61 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(b, meet(a, c))))))
% 9.31/1.61 = { by lemma 12 R->L }
% 9.31/1.61 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(meet(a, c), join(b, meet(a, c))))))))
% 9.31/1.61 = { by lemma 9 }
% 9.31/1.61 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(a, c))))))
% 9.31/1.61 = { by lemma 16 R->L }
% 9.31/1.61 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(a, join(b, meet(a, c)))))))))
% 9.31/1.61 = { by lemma 12 R->L }
% 9.31/1.61 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, join(b, meet(a, c))), meet(b, join(a, join(b, meet(a, c)))))))))))
% 9.31/1.62 = { by lemma 18 R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, join(b, meet(a, c))), meet(b, join(a, meet(join(a, b), join(b, meet(a, c))))))))))))
% 9.31/1.62 = { by axiom 1 (commutativity_of_meet) R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, join(b, meet(a, c))), meet(b, join(a, meet(join(b, meet(a, c)), join(a, b)))))))))))
% 9.31/1.62 = { by axiom 3 (commutativity_of_join) R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, join(b, meet(a, c))), meet(b, join(a, meet(join(b, meet(a, c)), join(b, a)))))))))))
% 9.31/1.62 = { by lemma 16 }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, join(b, meet(a, c))), meet(b, join(a, meet(b, join(b, meet(a, c))))))))))))
% 9.31/1.62 = { by axiom 4 (absorption1) }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, join(b, meet(a, c))), meet(b, join(a, b)))))))))
% 9.31/1.62 = { by lemma 9 }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, join(b, meet(a, c))), b)))))))
% 9.31/1.62 = { by axiom 7 (associativity_of_join) }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(a, join(join(b, meet(a, c)), b))))))))
% 9.31/1.62 = { by lemma 14 R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(b, meet(a, c)), join(a, b))))))))
% 9.31/1.62 = { by axiom 3 (commutativity_of_join) }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, b), join(b, meet(a, c)))))))))
% 9.31/1.62 = { by lemma 18 R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(join(a, b), meet(join(a, b), join(b, meet(a, c))))))))))
% 9.31/1.62 = { by axiom 6 (absorption2) }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(c, join(a, b)))))))
% 9.31/1.62 = { by lemma 13 R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), join(join(b, meet(a, c)), meet(c, join(a, b))))))))
% 9.31/1.62 = { by lemma 19 R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(join(meet(c, join(a, b)), join(b, meet(a, c))), join(join(X, meet(c, join(a, b))), join(b, meet(a, c)))))))))
% 9.31/1.62 = { by axiom 1 (commutativity_of_meet) R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(join(join(X, meet(c, join(a, b))), join(b, meet(a, c))), join(meet(c, join(a, b)), join(b, meet(a, c)))))))))
% 9.31/1.62 = { by lemma 20 R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(join(join(X, meet(c, join(a, b))), join(b, meet(a, c))), join(meet(c, join(a, b)), meet(a, join(b, meet(a, c))))))))))
% 9.31/1.62 = { by axiom 1 (commutativity_of_meet) }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(join(meet(c, join(a, b)), meet(a, join(b, meet(a, c)))), join(join(X, meet(c, join(a, b))), join(b, meet(a, c)))))))))
% 9.31/1.62 = { by lemma 20 R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), meet(join(meet(c, join(a, b)), meet(a, join(b, meet(a, c)))), join(join(X, meet(c, join(a, b))), meet(a, join(b, meet(a, c))))))))))
% 9.31/1.62 = { by lemma 19 }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(b, meet(a, c)), join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))))))))
% 9.31/1.62 = { by axiom 8 (equation_H76) }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))), meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(b, meet(a, c))))))))
% 9.31/1.62 = { by axiom 1 (commutativity_of_meet) R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))), meet(join(b, meet(a, c)), meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))))))))))
% 9.31/1.62 = { by axiom 2 (idempotence_of_join) R->L }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))), meet(join(b, meet(a, c)), join(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))))))))))
% 9.31/1.62 = { by lemma 20 }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))), meet(join(b, meet(a, c)), join(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))))))))))
% 9.31/1.62 = { by lemma 15 }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))), meet(join(b, meet(a, c)), join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))))))))
% 9.31/1.62 = { by lemma 12 }
% 9.31/1.62 meet(a, meet(meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))), join(join(b, meet(a, c)), meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))))))
% 9.31/1.62 = { by lemma 9 }
% 9.31/1.62 meet(a, meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b)))))
% 9.31/1.62 = { by lemma 10 }
% 9.31/1.62 meet(a, join(meet(a, join(b, meet(a, c))), meet(c, join(a, b))))
% 9.31/1.62 % SZS output end Proof
% 9.31/1.62
% 9.31/1.62 RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------