TSTP Solution File: GRP148-1 by Twee---2.4.2
View Problem
- Process Solution
%------------------------------------------------------------------------------
% File : Twee---2.4.2
% Problem : GRP148-1 : TPTP v8.1.2. Bugfixed v1.2.1.
% 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 : n010.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 01:17:21 EDT 2023
% Result : Unsatisfiable 0.21s 0.42s
% Output : Proof 0.21s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13 % Problem : GRP148-1 : TPTP v8.1.2. Bugfixed v1.2.1.
% 0.00/0.14 % Command : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof
% 0.14/0.36 % Computer : n010.cluster.edu
% 0.14/0.36 % Model : x86_64 x86_64
% 0.14/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.14/0.36 % Memory : 8042.1875MB
% 0.14/0.36 % OS : Linux 3.10.0-693.el7.x86_64
% 0.14/0.36 % CPULimit : 300
% 0.14/0.36 % WCLimit : 300
% 0.14/0.36 % DateTime : Mon Aug 28 19:49:04 EDT 2023
% 0.14/0.36 % CPUTime :
% 0.21/0.42 Command-line arguments: --flatten
% 0.21/0.42
% 0.21/0.42 % SZS status Unsatisfiable
% 0.21/0.42
% 0.21/0.42 % SZS output start Proof
% 0.21/0.42 Axiom 1 (ax_lub1c_1): least_upper_bound(a, c) = c.
% 0.21/0.42 Axiom 2 (ax_lub1c_2): least_upper_bound(b, c) = c.
% 0.21/0.42 Axiom 3 (glb_absorbtion): greatest_lower_bound(X, least_upper_bound(X, Y)) = X.
% 0.21/0.42 Axiom 4 (associativity_of_lub): least_upper_bound(X, least_upper_bound(Y, Z)) = least_upper_bound(least_upper_bound(X, Y), Z).
% 0.21/0.42
% 0.21/0.42 Goal 1 (prove_ax_lub1c): greatest_lower_bound(least_upper_bound(a, b), c) = least_upper_bound(a, b).
% 0.21/0.42 Proof:
% 0.21/0.42 greatest_lower_bound(least_upper_bound(a, b), c)
% 0.21/0.42 = { by axiom 1 (ax_lub1c_1) R->L }
% 0.21/0.42 greatest_lower_bound(least_upper_bound(a, b), least_upper_bound(a, c))
% 0.21/0.42 = { by axiom 2 (ax_lub1c_2) R->L }
% 0.21/0.42 greatest_lower_bound(least_upper_bound(a, b), least_upper_bound(a, least_upper_bound(b, c)))
% 0.21/0.42 = { by axiom 1 (ax_lub1c_1) R->L }
% 0.21/0.42 greatest_lower_bound(least_upper_bound(a, b), least_upper_bound(a, least_upper_bound(b, least_upper_bound(a, c))))
% 0.21/0.42 = { by axiom 4 (associativity_of_lub) }
% 0.21/0.42 greatest_lower_bound(least_upper_bound(a, b), least_upper_bound(least_upper_bound(a, b), least_upper_bound(a, c)))
% 0.21/0.42 = { by axiom 3 (glb_absorbtion) }
% 0.21/0.42 least_upper_bound(a, b)
% 0.21/0.42 % SZS output end Proof
% 0.21/0.42
% 0.21/0.42 RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------