TSTP Solution File: LCL068-1 by Twee---2.4.2
View Problem
- Process Solution
%------------------------------------------------------------------------------
% File : Twee---2.4.2
% Problem : LCL068-1 : TPTP v8.1.2. Bugfixed v1.2.0.
% 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 : n006.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 08:17:16 EDT 2023
% Result : Unsatisfiable 22.68s 3.40s
% Output : Proof 22.68s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.12 % Problem : LCL068-1 : TPTP v8.1.2. Bugfixed v1.2.0.
% 0.00/0.13 % Command : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof
% 0.13/0.35 % Computer : n006.cluster.edu
% 0.13/0.35 % Model : x86_64 x86_64
% 0.13/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.13/0.35 % Memory : 8042.1875MB
% 0.13/0.35 % OS : Linux 3.10.0-693.el7.x86_64
% 0.13/0.35 % CPULimit : 300
% 0.13/0.35 % WCLimit : 300
% 0.13/0.35 % DateTime : Fri Aug 25 06:17:52 EDT 2023
% 0.13/0.35 % CPUTime :
% 22.68/3.40 Command-line arguments: --lhs-weight 9 --flip-ordering --complete-subsets --normalise-queue-percent 10 --cp-renormalise-threshold 10
% 22.68/3.40
% 22.68/3.40 % SZS status Unsatisfiable
% 22.68/3.40
% 22.68/3.42 % SZS output start Proof
% 22.68/3.42 Take the following subset of the input axioms:
% 22.68/3.42 fof(cn_19, axiom, ![X, Y, Z]: is_a_theorem(implies(implies(implies(X, Y), Z), implies(Y, Z)))).
% 22.68/3.42 fof(cn_37, axiom, ![X2, Y2, Z2]: is_a_theorem(implies(implies(implies(X2, Y2), Z2), implies(not(X2), Z2)))).
% 22.68/3.42 fof(cn_59, axiom, ![X2, Y2, Z2]: is_a_theorem(implies(implies(not(X2), Z2), implies(implies(Y2, Z2), implies(implies(X2, Y2), Z2))))).
% 22.68/3.42 fof(condensed_detachment, axiom, ![X2, Y2]: (~is_a_theorem(implies(X2, Y2)) | (~is_a_theorem(X2) | is_a_theorem(Y2)))).
% 22.68/3.42 fof(prove_cn_2, negated_conjecture, ~is_a_theorem(implies(implies(not(a), a), a))).
% 22.68/3.42
% 22.68/3.42 Now clausify the problem and encode Horn clauses using encoding 3 of
% 22.68/3.42 http://www.cse.chalmers.se/~nicsma/papers/horn.pdf.
% 22.68/3.42 We repeatedly replace C & s=t => u=v by the two clauses:
% 22.68/3.42 fresh(y, y, x1...xn) = u
% 22.68/3.42 C => fresh(s, t, x1...xn) = v
% 22.68/3.42 where fresh is a fresh function symbol and x1..xn are the free
% 22.68/3.42 variables of u and v.
% 22.68/3.42 A predicate p(X) is encoded as p(X)=true (this is sound, because the
% 22.68/3.42 input problem has no model of domain size 1).
% 22.68/3.42
% 22.68/3.42 The encoding turns the above axioms into the following unit equations and goals:
% 22.68/3.42
% 22.68/3.42 Axiom 1 (condensed_detachment): fresh2(X, X, Y) = true.
% 22.68/3.42 Axiom 2 (condensed_detachment): fresh(X, X, Y, Z) = is_a_theorem(Z).
% 22.68/3.42 Axiom 3 (condensed_detachment): fresh(is_a_theorem(implies(X, Y)), true, X, Y) = fresh2(is_a_theorem(X), true, Y).
% 22.68/3.42 Axiom 4 (cn_19): is_a_theorem(implies(implies(implies(X, Y), Z), implies(Y, Z))) = true.
% 22.68/3.42 Axiom 5 (cn_37): is_a_theorem(implies(implies(implies(X, Y), Z), implies(not(X), Z))) = true.
% 22.68/3.42 Axiom 6 (cn_59): is_a_theorem(implies(implies(not(X), Y), implies(implies(Z, Y), implies(implies(X, Z), Y)))) = true.
% 22.68/3.42
% 22.68/3.42 Lemma 7: fresh2(is_a_theorem(implies(implies(X, Y), Z)), true, implies(Y, Z)) = is_a_theorem(implies(Y, Z)).
% 22.68/3.42 Proof:
% 22.68/3.42 fresh2(is_a_theorem(implies(implies(X, Y), Z)), true, implies(Y, Z))
% 22.68/3.42 = { by axiom 3 (condensed_detachment) R->L }
% 22.68/3.42 fresh(is_a_theorem(implies(implies(implies(X, Y), Z), implies(Y, Z))), true, implies(implies(X, Y), Z), implies(Y, Z))
% 22.68/3.42 = { by axiom 4 (cn_19) }
% 22.68/3.42 fresh(true, true, implies(implies(X, Y), Z), implies(Y, Z))
% 22.68/3.42 = { by axiom 2 (condensed_detachment) }
% 22.68/3.42 is_a_theorem(implies(Y, Z))
% 22.68/3.42
% 22.68/3.42 Lemma 8: is_a_theorem(implies(X, implies(Y, X))) = true.
% 22.68/3.42 Proof:
% 22.68/3.42 is_a_theorem(implies(X, implies(Y, X)))
% 22.68/3.42 = { by lemma 7 R->L }
% 22.68/3.42 fresh2(is_a_theorem(implies(implies(implies(Z, Y), X), implies(Y, X))), true, implies(X, implies(Y, X)))
% 22.68/3.42 = { by axiom 4 (cn_19) }
% 22.68/3.42 fresh2(true, true, implies(X, implies(Y, X)))
% 22.68/3.42 = { by axiom 1 (condensed_detachment) }
% 22.68/3.42 true
% 22.68/3.42
% 22.68/3.42 Lemma 9: fresh2(is_a_theorem(implies(implies(X, Y), Z)), true, implies(not(X), Z)) = is_a_theorem(implies(not(X), Z)).
% 22.68/3.42 Proof:
% 22.68/3.42 fresh2(is_a_theorem(implies(implies(X, Y), Z)), true, implies(not(X), Z))
% 22.68/3.42 = { by axiom 3 (condensed_detachment) R->L }
% 22.68/3.42 fresh(is_a_theorem(implies(implies(implies(X, Y), Z), implies(not(X), Z))), true, implies(implies(X, Y), Z), implies(not(X), Z))
% 22.68/3.42 = { by axiom 5 (cn_37) }
% 22.68/3.42 fresh(true, true, implies(implies(X, Y), Z), implies(not(X), Z))
% 22.68/3.42 = { by axiom 2 (condensed_detachment) }
% 22.68/3.42 is_a_theorem(implies(not(X), Z))
% 22.68/3.42
% 22.68/3.43 Lemma 10: fresh2(is_a_theorem(implies(not(X), Y)), true, implies(implies(Z, Y), implies(implies(X, Z), Y))) = is_a_theorem(implies(implies(Z, Y), implies(implies(X, Z), Y))).
% 22.68/3.43 Proof:
% 22.68/3.43 fresh2(is_a_theorem(implies(not(X), Y)), true, implies(implies(Z, Y), implies(implies(X, Z), Y)))
% 22.68/3.43 = { by axiom 3 (condensed_detachment) R->L }
% 22.68/3.43 fresh(is_a_theorem(implies(implies(not(X), Y), implies(implies(Z, Y), implies(implies(X, Z), Y)))), true, implies(not(X), Y), implies(implies(Z, Y), implies(implies(X, Z), Y)))
% 22.68/3.43 = { by axiom 6 (cn_59) }
% 22.68/3.43 fresh(true, true, implies(not(X), Y), implies(implies(Z, Y), implies(implies(X, Z), Y)))
% 22.68/3.43 = { by axiom 2 (condensed_detachment) }
% 22.68/3.43 is_a_theorem(implies(implies(Z, Y), implies(implies(X, Z), Y)))
% 22.68/3.43
% 22.68/3.43 Lemma 11: is_a_theorem(implies(implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z)))) = true.
% 22.68/3.43 Proof:
% 22.68/3.43 is_a_theorem(implies(implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z))))
% 22.68/3.43 = { by lemma 10 R->L }
% 22.68/3.43 fresh2(is_a_theorem(implies(not(implies(W, Y)), implies(Y, Z))), true, implies(implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z))))
% 22.68/3.43 = { by lemma 9 R->L }
% 22.68/3.43 fresh2(fresh2(is_a_theorem(implies(implies(implies(W, Y), Z), implies(Y, Z))), true, implies(not(implies(W, Y)), implies(Y, Z))), true, implies(implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z))))
% 22.68/3.43 = { by axiom 4 (cn_19) }
% 22.68/3.43 fresh2(fresh2(true, true, implies(not(implies(W, Y)), implies(Y, Z))), true, implies(implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z))))
% 22.68/3.43 = { by axiom 1 (condensed_detachment) }
% 22.68/3.43 fresh2(true, true, implies(implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z))))
% 22.68/3.43 = { by axiom 1 (condensed_detachment) }
% 22.68/3.43 true
% 22.68/3.43
% 22.68/3.43 Lemma 12: fresh2(is_a_theorem(implies(X, implies(Y, Z))), true, implies(implies(implies(W, Y), X), implies(Y, Z))) = is_a_theorem(implies(implies(implies(W, Y), X), implies(Y, Z))).
% 22.68/3.43 Proof:
% 22.68/3.43 fresh2(is_a_theorem(implies(X, implies(Y, Z))), true, implies(implies(implies(W, Y), X), implies(Y, Z)))
% 22.68/3.43 = { by axiom 3 (condensed_detachment) R->L }
% 22.68/3.43 fresh(is_a_theorem(implies(implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z)))), true, implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z)))
% 22.68/3.43 = { by lemma 11 }
% 22.68/3.43 fresh(true, true, implies(X, implies(Y, Z)), implies(implies(implies(W, Y), X), implies(Y, Z)))
% 22.68/3.43 = { by axiom 2 (condensed_detachment) }
% 22.68/3.43 is_a_theorem(implies(implies(implies(W, Y), X), implies(Y, Z)))
% 22.68/3.43
% 22.68/3.43 Goal 1 (prove_cn_2): is_a_theorem(implies(implies(not(a), a), a)) = true.
% 22.68/3.43 Proof:
% 22.68/3.43 is_a_theorem(implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 2 (condensed_detachment) R->L }
% 22.68/3.43 fresh(true, true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 1 (condensed_detachment) R->L }
% 22.68/3.43 fresh(fresh2(true, true, implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by lemma 8 R->L }
% 22.68/3.43 fresh(fresh2(is_a_theorem(implies(a, implies(implies(not(a), a), a))), true, implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 3 (condensed_detachment) R->L }
% 22.68/3.43 fresh(fresh(is_a_theorem(implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by lemma 10 R->L }
% 22.68/3.43 fresh(fresh(fresh2(is_a_theorem(implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 2 (condensed_detachment) R->L }
% 22.68/3.43 fresh(fresh(fresh2(fresh(true, true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 1 (condensed_detachment) R->L }
% 22.68/3.43 fresh(fresh(fresh2(fresh(fresh2(true, true, implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 4 (cn_19) R->L }
% 22.68/3.43 fresh(fresh(fresh2(fresh(fresh2(is_a_theorem(implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 3 (condensed_detachment) R->L }
% 22.68/3.43 fresh(fresh(fresh2(fresh(fresh(is_a_theorem(implies(implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))))), true, implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by lemma 10 R->L }
% 22.68/3.43 fresh(fresh(fresh2(fresh(fresh(fresh2(is_a_theorem(implies(not(implies(not(a), a)), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))))), true, implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by lemma 9 R->L }
% 22.68/3.43 fresh(fresh(fresh2(fresh(fresh(fresh2(fresh2(is_a_theorem(implies(implies(implies(not(a), a), a), implies(not(a), implies(implies(not(a), a), a)))), true, implies(not(implies(not(a), a)), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))))), true, implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by lemma 8 }
% 22.68/3.43 fresh(fresh(fresh2(fresh(fresh(fresh2(fresh2(true, true, implies(not(implies(not(a), a)), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))))), true, implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.43 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(fresh(fresh(fresh2(true, true, implies(implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))))), true, implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(fresh(fresh(true, true, implies(implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)), implies(not(a), implies(implies(not(a), a), a))), implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 2 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(fresh(is_a_theorem(implies(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 3 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(is_a_theorem(implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 2 (condensed_detachment) R->L }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh(true, true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) R->L }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh(fresh2(true, true, implies(implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))))), true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) R->L }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh(fresh2(fresh2(true, true, implies(not(not(a)), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))))), true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 11 R->L }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh(fresh2(fresh2(is_a_theorem(implies(implies(not(a), implies(implies(not(a), a), a)), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(not(a)), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))))), true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 9 }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh(fresh2(is_a_theorem(implies(not(not(a)), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))))), true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 10 }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh(is_a_theorem(implies(implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))))), true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a))), implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 3 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh2(is_a_theorem(implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 7 R->L }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh2(fresh2(is_a_theorem(implies(implies(implies(not(a), a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 8 }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh2(fresh2(true, true, implies(a, implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(fresh2(true, true, implies(implies(not(a), a), implies(implies(implies(X, implies(not(a), a)), not(a)), implies(implies(not(a), a), a)))), true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(fresh2(true, true, implies(not(a), implies(implies(not(a), a), a))), true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(fresh2(true, true, implies(implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a)))), true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 fresh(fresh(true, true, implies(a, implies(implies(not(a), a), a)), implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 2 (condensed_detachment) }
% 22.68/3.44 fresh(is_a_theorem(implies(implies(a, a), implies(implies(not(a), a), a))), true, implies(a, a), implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 3 (condensed_detachment) }
% 22.68/3.44 fresh2(is_a_theorem(implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 2 (condensed_detachment) R->L }
% 22.68/3.44 fresh2(fresh(true, true, implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) R->L }
% 22.68/3.44 fresh2(fresh(fresh2(true, true, implies(implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a))), true, implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) R->L }
% 22.68/3.44 fresh2(fresh(fresh2(fresh2(true, true, implies(implies(implies(Z, a), implies(implies(Y, a), a)), implies(a, a))), true, implies(implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a))), true, implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 4 (cn_19) R->L }
% 22.68/3.44 fresh2(fresh(fresh2(fresh2(is_a_theorem(implies(implies(implies(Y, a), a), implies(a, a))), true, implies(implies(implies(Z, a), implies(implies(Y, a), a)), implies(a, a))), true, implies(implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a))), true, implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 12 }
% 22.68/3.44 fresh2(fresh(fresh2(is_a_theorem(implies(implies(implies(Z, a), implies(implies(Y, a), a)), implies(a, a))), true, implies(implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a))), true, implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 12 }
% 22.68/3.44 fresh2(fresh(is_a_theorem(implies(implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a))), true, implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a))), implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 3 (condensed_detachment) }
% 22.68/3.44 fresh2(fresh2(is_a_theorem(implies(implies(implies(Y, a), a), implies(implies(Z, a), implies(implies(Y, a), a)))), true, implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by lemma 8 }
% 22.68/3.44 fresh2(fresh2(true, true, implies(a, a)), true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 fresh2(true, true, implies(implies(not(a), a), a))
% 22.68/3.44 = { by axiom 1 (condensed_detachment) }
% 22.68/3.44 true
% 22.68/3.44 % SZS output end Proof
% 22.68/3.44
% 22.68/3.44 RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------