TSTP Solution File: COL041-1 by Twee---2.4.2

View Problem - Process Solution

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% File     : Twee---2.4.2
% Problem  : COL041-1 : 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 : n017.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 : Wed Aug 30 18:31:44 EDT 2023

% Result   : Unsatisfiable 0.21s 0.47s
% Output   : Proof 0.21s
% Verified : 
% SZS Type : -

% Comments : 
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%----WARNING: Could not form TPTP format derivation
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%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.13  % Problem  : COL041-1 : TPTP v8.1.2. Released v1.0.0.
% 0.14/0.14  % Command  : parallel-twee %s --tstp --conditional-encoding if --smaller --drop-non-horn --give-up-on-saturation --explain-encoding --formal-proof
% 0.15/0.35  % Computer : n017.cluster.edu
% 0.15/0.35  % Model    : x86_64 x86_64
% 0.15/0.35  % CPU      : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.15/0.35  % Memory   : 8042.1875MB
% 0.15/0.35  % OS       : Linux 3.10.0-693.el7.x86_64
% 0.15/0.35  % CPULimit : 300
% 0.15/0.35  % WCLimit  : 300
% 0.15/0.35  % DateTime : Sun Aug 27 03:53:56 EDT 2023
% 0.15/0.35  % CPUTime  : 
% 0.21/0.47  Command-line arguments: --flip-ordering --lhs-weight 1 --depth-weight 60 --distributivity-heuristic
% 0.21/0.47  
% 0.21/0.47  % SZS status Unsatisfiable
% 0.21/0.47  
% 0.21/0.47  % SZS output start Proof
% 0.21/0.47  Axiom 1 (m_definition): apply(m, X) = apply(X, X).
% 0.21/0.47  Axiom 2 (b_definition): apply(apply(apply(b, X), Y), Z) = apply(X, apply(Y, Z)).
% 0.21/0.47  Axiom 3 (c_definition): apply(apply(apply(c, X), Y), Z) = apply(apply(X, Z), Y).
% 0.21/0.47  
% 0.21/0.47  Goal 1 (prove_fixed_point): apply(X, f(X)) = apply(f(X), apply(X, f(X))).
% 0.21/0.47  The goal is true when:
% 0.21/0.47    X = apply(apply(b, m), apply(apply(c, b), m))
% 0.21/0.47  
% 0.21/0.47  Proof:
% 0.21/0.47    apply(apply(apply(b, m), apply(apply(c, b), m)), f(apply(apply(b, m), apply(apply(c, b), m))))
% 0.21/0.47  = { by axiom 2 (b_definition) }
% 0.21/0.47    apply(m, apply(apply(apply(c, b), m), f(apply(apply(b, m), apply(apply(c, b), m)))))
% 0.21/0.47  = { by axiom 3 (c_definition) }
% 0.21/0.47    apply(m, apply(apply(b, f(apply(apply(b, m), apply(apply(c, b), m)))), m))
% 0.21/0.47  = { by axiom 1 (m_definition) }
% 0.21/0.47    apply(apply(apply(b, f(apply(apply(b, m), apply(apply(c, b), m)))), m), apply(apply(b, f(apply(apply(b, m), apply(apply(c, b), m)))), m))
% 0.21/0.47  = { by axiom 2 (b_definition) }
% 0.21/0.47    apply(f(apply(apply(b, m), apply(apply(c, b), m))), apply(m, apply(apply(b, f(apply(apply(b, m), apply(apply(c, b), m)))), m)))
% 0.21/0.47  = { by axiom 3 (c_definition) R->L }
% 0.21/0.47    apply(f(apply(apply(b, m), apply(apply(c, b), m))), apply(m, apply(apply(apply(c, b), m), f(apply(apply(b, m), apply(apply(c, b), m))))))
% 0.21/0.47  = { by axiom 2 (b_definition) R->L }
% 0.21/0.47    apply(f(apply(apply(b, m), apply(apply(c, b), m))), apply(apply(apply(b, m), apply(apply(c, b), m)), f(apply(apply(b, m), apply(apply(c, b), m)))))
% 0.21/0.47  % SZS output end Proof
% 0.21/0.47  
% 0.21/0.47  RESULT: Unsatisfiable (the axioms are contradictory).
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