TSTP Solution File: RNG015-6 by Twee---2.4.2
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% File : Twee---2.4.2
% Problem : RNG015-6 : TPTP v8.1.2. Released v1.0.0.
% 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 : n015.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 13:58:49 EDT 2023
% Result : Unsatisfiable 0.19s 0.41s
% 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 : RNG015-6 : TPTP v8.1.2. Released v1.0.0.
% 0.00/0.13 % Command : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof
% 0.13/0.34 % Computer : n015.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 : Sun Aug 27 02:40:08 EDT 2023
% 0.13/0.34 % CPUTime :
% 0.19/0.41 Command-line arguments: --kbo-weight0 --lhs-weight 5 --flip-ordering --normalise-queue-percent 10 --cp-renormalise-threshold 10 --goal-heuristic
% 0.19/0.41
% 0.19/0.41 % SZS status Unsatisfiable
% 0.19/0.41
% 0.19/0.41 % SZS output start Proof
% 0.19/0.41 Axiom 1 (commutativity_for_addition): add(X, Y) = add(Y, X).
% 0.19/0.41 Axiom 2 (left_additive_identity): add(additive_identity, X) = X.
% 0.19/0.41 Axiom 3 (right_additive_inverse): add(X, additive_inverse(X)) = additive_identity.
% 0.19/0.41 Axiom 4 (associativity_for_addition): add(X, add(Y, Z)) = add(add(X, Y), Z).
% 0.19/0.41 Axiom 5 (additive_inverse_additive_inverse): additive_inverse(additive_inverse(X)) = X.
% 0.19/0.41 Axiom 6 (distribute1): multiply(X, add(Y, Z)) = add(multiply(X, Y), multiply(X, Z)).
% 0.19/0.41
% 0.19/0.41 Lemma 7: add(X, add(Y, additive_inverse(X))) = Y.
% 0.19/0.41 Proof:
% 0.19/0.41 add(X, add(Y, additive_inverse(X)))
% 0.19/0.41 = { by axiom 1 (commutativity_for_addition) R->L }
% 0.19/0.41 add(X, add(additive_inverse(X), Y))
% 0.19/0.41 = { by axiom 4 (associativity_for_addition) }
% 0.19/0.41 add(add(X, additive_inverse(X)), Y)
% 0.19/0.41 = { by axiom 3 (right_additive_inverse) }
% 0.19/0.41 add(additive_identity, Y)
% 0.19/0.41 = { by axiom 2 (left_additive_identity) }
% 0.19/0.41 Y
% 0.19/0.41
% 0.19/0.41 Goal 1 (prove_distributivity): multiply(x, add(y, additive_inverse(z))) = add(multiply(x, y), additive_inverse(multiply(x, z))).
% 0.19/0.41 Proof:
% 0.19/0.41 multiply(x, add(y, additive_inverse(z)))
% 0.19/0.41 = { by lemma 7 R->L }
% 0.19/0.41 add(additive_inverse(multiply(x, z)), add(multiply(x, add(y, additive_inverse(z))), additive_inverse(additive_inverse(multiply(x, z)))))
% 0.19/0.41 = { by axiom 5 (additive_inverse_additive_inverse) }
% 0.19/0.41 add(additive_inverse(multiply(x, z)), add(multiply(x, add(y, additive_inverse(z))), multiply(x, z)))
% 0.19/0.41 = { by axiom 6 (distribute1) R->L }
% 0.19/0.41 add(additive_inverse(multiply(x, z)), multiply(x, add(add(y, additive_inverse(z)), z)))
% 0.19/0.41 = { by axiom 1 (commutativity_for_addition) }
% 0.19/0.41 add(additive_inverse(multiply(x, z)), multiply(x, add(z, add(y, additive_inverse(z)))))
% 0.19/0.41 = { by lemma 7 }
% 0.19/0.41 add(additive_inverse(multiply(x, z)), multiply(x, y))
% 0.19/0.41 = { by axiom 1 (commutativity_for_addition) }
% 0.19/0.41 add(multiply(x, y), additive_inverse(multiply(x, z)))
% 0.19/0.41 % SZS output end Proof
% 0.19/0.41
% 0.19/0.41 RESULT: Unsatisfiable (the axioms are contradictory).
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