TSTP Solution File: GRP485-1 by Twee---2.4.2
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% File : Twee---2.4.2
% Problem : GRP485-1 : TPTP v8.1.2. Released v2.6.0.
% 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 : n022.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 01:18:37 EDT 2023
% Result : Unsatisfiable 0.19s 0.39s
% Output : Proof 0.19s
% Verified :
% SZS Type : -
% Comments :
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%----WARNING: Could not form TPTP format derivation
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%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : GRP485-1 : TPTP v8.1.2. Released v2.6.0.
% 0.00/0.13 % Command : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof
% 0.13/0.34 % Computer : n022.cluster.edu
% 0.13/0.34 % Model : x86_64 x86_64
% 0.13/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.34 % Memory : 8042.1875MB
% 0.13/0.34 % OS : Linux 3.10.0-693.el7.x86_64
% 0.13/0.34 % CPULimit : 300
% 0.13/0.34 % WCLimit : 300
% 0.13/0.34 % DateTime : Mon Aug 28 23:22:08 EDT 2023
% 0.13/0.34 % CPUTime :
% 0.19/0.39 Command-line arguments: --flatten
% 0.19/0.39
% 0.19/0.39 % SZS status Unsatisfiable
% 0.19/0.39
% 0.19/0.41 % SZS output start Proof
% 0.19/0.41 Axiom 1 (inverse): inverse(X) = double_divide(X, identity).
% 0.19/0.41 Axiom 2 (identity): identity = double_divide(X, inverse(X)).
% 0.19/0.41 Axiom 3 (multiply): multiply(X, Y) = double_divide(double_divide(Y, X), identity).
% 0.19/0.41 Axiom 4 (single_axiom): double_divide(double_divide(X, double_divide(double_divide(double_divide(X, Y), Z), double_divide(Y, identity))), double_divide(identity, identity)) = Z.
% 0.19/0.41
% 0.19/0.41 Lemma 5: double_divide(X, double_divide(X, identity)) = identity.
% 0.19/0.41 Proof:
% 0.19/0.41 double_divide(X, double_divide(X, identity))
% 0.19/0.41 = { by axiom 1 (inverse) R->L }
% 0.19/0.41 double_divide(X, inverse(X))
% 0.19/0.41 = { by axiom 2 (identity) R->L }
% 0.19/0.41 identity
% 0.19/0.41
% 0.19/0.41 Lemma 6: double_divide(double_divide(X, double_divide(double_divide(double_divide(X, Y), Z), inverse(Y))), double_divide(identity, identity)) = Z.
% 0.19/0.41 Proof:
% 0.19/0.41 double_divide(double_divide(X, double_divide(double_divide(double_divide(X, Y), Z), inverse(Y))), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 1 (inverse) }
% 0.19/0.41 double_divide(double_divide(X, double_divide(double_divide(double_divide(X, Y), Z), double_divide(Y, identity))), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 4 (single_axiom) }
% 0.19/0.41 Z
% 0.19/0.41
% 0.19/0.41 Lemma 7: inverse(double_divide(X, Y)) = multiply(Y, X).
% 0.19/0.41 Proof:
% 0.19/0.41 inverse(double_divide(X, Y))
% 0.19/0.41 = { by axiom 1 (inverse) }
% 0.19/0.41 double_divide(double_divide(X, Y), identity)
% 0.19/0.41 = { by axiom 3 (multiply) R->L }
% 0.19/0.41 multiply(Y, X)
% 0.19/0.41
% 0.19/0.41 Lemma 8: double_divide(double_divide(X, double_divide(identity, inverse(Y))), double_divide(identity, identity)) = multiply(Y, X).
% 0.19/0.41 Proof:
% 0.19/0.41 double_divide(double_divide(X, double_divide(identity, inverse(Y))), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 2 (identity) }
% 0.19/0.41 double_divide(double_divide(X, double_divide(double_divide(double_divide(X, Y), inverse(double_divide(X, Y))), inverse(Y))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 6 }
% 0.19/0.41 inverse(double_divide(X, Y))
% 0.19/0.41 = { by lemma 7 }
% 0.19/0.41 multiply(Y, X)
% 0.19/0.41
% 0.19/0.41 Lemma 9: multiply(identity, X) = inverse(inverse(X)).
% 0.19/0.41 Proof:
% 0.19/0.41 multiply(identity, X)
% 0.19/0.41 = { by lemma 7 R->L }
% 0.19/0.41 inverse(double_divide(X, identity))
% 0.19/0.41 = { by axiom 1 (inverse) R->L }
% 0.19/0.41 inverse(inverse(X))
% 0.19/0.41
% 0.19/0.41 Lemma 10: double_divide(inverse(X), double_divide(identity, identity)) = inverse(inverse(X)).
% 0.19/0.41 Proof:
% 0.19/0.41 double_divide(inverse(X), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 1 (inverse) }
% 0.19/0.41 double_divide(double_divide(X, identity), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 5 R->L }
% 0.19/0.41 double_divide(double_divide(X, double_divide(identity, double_divide(identity, identity))), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 1 (inverse) R->L }
% 0.19/0.41 double_divide(double_divide(X, double_divide(identity, inverse(identity))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 8 }
% 0.19/0.41 multiply(identity, X)
% 0.19/0.41 = { by lemma 9 }
% 0.19/0.41 inverse(inverse(X))
% 0.19/0.41
% 0.19/0.41 Lemma 11: double_divide(double_divide(X, double_divide(multiply(Y, X), inverse(Y))), double_divide(identity, identity)) = identity.
% 0.19/0.41 Proof:
% 0.19/0.41 double_divide(double_divide(X, double_divide(multiply(Y, X), inverse(Y))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 7 R->L }
% 0.19/0.41 double_divide(double_divide(X, double_divide(inverse(double_divide(X, Y)), inverse(Y))), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 1 (inverse) }
% 0.19/0.41 double_divide(double_divide(X, double_divide(double_divide(double_divide(X, Y), identity), inverse(Y))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 6 }
% 0.19/0.41 identity
% 0.19/0.41
% 0.19/0.41 Lemma 12: inverse(double_divide(identity, identity)) = identity.
% 0.19/0.41 Proof:
% 0.19/0.41 inverse(double_divide(identity, identity))
% 0.19/0.41 = { by axiom 1 (inverse) R->L }
% 0.19/0.41 inverse(inverse(identity))
% 0.19/0.41 = { by lemma 10 R->L }
% 0.19/0.41 double_divide(inverse(identity), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 1 (inverse) }
% 0.19/0.41 double_divide(double_divide(identity, identity), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 2 (identity) }
% 0.19/0.41 double_divide(double_divide(identity, double_divide(double_divide(identity, identity), inverse(double_divide(identity, identity)))), double_divide(identity, identity))
% 0.19/0.41 = { by axiom 1 (inverse) R->L }
% 0.19/0.41 double_divide(double_divide(identity, double_divide(inverse(identity), inverse(double_divide(identity, identity)))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 5 R->L }
% 0.19/0.41 double_divide(double_divide(identity, double_divide(inverse(double_divide(identity, double_divide(identity, identity))), inverse(double_divide(identity, identity)))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 7 }
% 0.19/0.41 double_divide(double_divide(identity, double_divide(multiply(double_divide(identity, identity), identity), inverse(double_divide(identity, identity)))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 11 }
% 0.19/0.41 identity
% 0.19/0.41
% 0.19/0.41 Lemma 13: double_divide(identity, identity) = identity.
% 0.19/0.41 Proof:
% 0.19/0.41 double_divide(identity, identity)
% 0.19/0.41 = { by axiom 1 (inverse) R->L }
% 0.19/0.41 inverse(identity)
% 0.19/0.41 = { by lemma 12 R->L }
% 0.19/0.41 inverse(inverse(double_divide(identity, identity)))
% 0.19/0.41 = { by lemma 10 R->L }
% 0.19/0.41 double_divide(inverse(double_divide(identity, identity)), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 12 }
% 0.19/0.41 double_divide(identity, double_divide(identity, identity))
% 0.19/0.41 = { by lemma 5 }
% 0.19/0.41 identity
% 0.19/0.41
% 0.19/0.41 Lemma 14: double_divide(X, double_divide(identity, identity)) = inverse(X).
% 0.19/0.41 Proof:
% 0.19/0.41 double_divide(X, double_divide(identity, identity))
% 0.19/0.41 = { by lemma 13 }
% 0.19/0.41 double_divide(X, identity)
% 0.19/0.41 = { by axiom 1 (inverse) R->L }
% 0.19/0.41 inverse(X)
% 0.19/0.41
% 0.19/0.41 Lemma 15: multiply(multiply(X, inverse(Y)), Y) = X.
% 0.19/0.41 Proof:
% 0.19/0.41 multiply(multiply(X, inverse(Y)), Y)
% 0.19/0.41 = { by lemma 7 R->L }
% 0.19/0.41 multiply(inverse(double_divide(inverse(Y), X)), Y)
% 0.19/0.41 = { by axiom 1 (inverse) }
% 0.19/0.41 multiply(double_divide(double_divide(inverse(Y), X), identity), Y)
% 0.19/0.41 = { by lemma 12 R->L }
% 0.19/0.41 multiply(double_divide(double_divide(inverse(Y), X), inverse(double_divide(identity, identity))), Y)
% 0.19/0.41 = { by lemma 7 R->L }
% 0.19/0.41 inverse(double_divide(Y, double_divide(double_divide(inverse(Y), X), inverse(double_divide(identity, identity)))))
% 0.19/0.41 = { by lemma 14 R->L }
% 0.19/0.41 double_divide(double_divide(Y, double_divide(double_divide(inverse(Y), X), inverse(double_divide(identity, identity)))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 14 R->L }
% 0.19/0.41 double_divide(double_divide(Y, double_divide(double_divide(double_divide(Y, double_divide(identity, identity)), X), inverse(double_divide(identity, identity)))), double_divide(identity, identity))
% 0.19/0.41 = { by lemma 6 }
% 0.19/0.42 X
% 0.19/0.42
% 0.19/0.42 Goal 1 (prove_these_axioms_2): multiply(identity, a2) = a2.
% 0.19/0.42 Proof:
% 0.19/0.42 multiply(identity, a2)
% 0.19/0.42 = { by lemma 15 R->L }
% 0.19/0.42 multiply(multiply(multiply(identity, a2), inverse(X)), X)
% 0.19/0.42 = { by lemma 8 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, inverse(multiply(identity, a2)))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 15 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(multiply(inverse(multiply(identity, a2)), inverse(Y)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 8 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, inverse(inverse(multiply(identity, a2))))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 15 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(multiply(inverse(inverse(multiply(identity, a2))), inverse(a2)), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 9 }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(multiply(inverse(inverse(inverse(inverse(a2)))), inverse(a2)), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 9 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(multiply(inverse(multiply(identity, inverse(a2))), inverse(a2)), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 14 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(multiply(double_divide(multiply(identity, inverse(a2)), double_divide(identity, identity)), inverse(a2)), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by axiom 1 (inverse) R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(multiply(double_divide(multiply(identity, inverse(a2)), inverse(identity)), inverse(a2)), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 8 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(double_divide(double_divide(inverse(a2), double_divide(identity, inverse(double_divide(multiply(identity, inverse(a2)), inverse(identity))))), double_divide(identity, identity)), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 11 R->L }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(double_divide(double_divide(inverse(a2), double_divide(double_divide(double_divide(inverse(a2), double_divide(multiply(identity, inverse(a2)), inverse(identity))), double_divide(identity, identity)), inverse(double_divide(multiply(identity, inverse(a2)), inverse(identity))))), double_divide(identity, identity)), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 6 }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(double_divide(identity, identity), a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 13 }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, multiply(identity, a2))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 9 }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(double_divide(double_divide(inverse(Y), double_divide(identity, inverse(inverse(a2)))), double_divide(identity, identity)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 8 }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, multiply(multiply(inverse(a2), inverse(Y)), Y))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 15 }
% 0.19/0.42 multiply(double_divide(double_divide(inverse(X), double_divide(identity, inverse(a2))), double_divide(identity, identity)), X)
% 0.19/0.42 = { by lemma 8 }
% 0.19/0.42 multiply(multiply(a2, inverse(X)), X)
% 0.19/0.42 = { by lemma 15 }
% 0.19/0.42 a2
% 0.19/0.42 % SZS output end Proof
% 0.19/0.42
% 0.19/0.42 RESULT: Unsatisfiable (the axioms are contradictory).
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