%------------------------------------------------------------------------------
% File     : Twee---2.4.2
% Problem  : SYN083-1 : 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 : n024.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 : Fri Sep  1 03:33:05 EDT 2023

% Result   : Unsatisfiable 0.19s 0.38s
% Output   : Proof 0.19s
% Verified : 
% SZS Type : -

% Comments : 
%------------------------------------------------------------------------------
%----WARNING: Could not form TPTP format derivation
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.07/0.12  % Problem  : SYN083-1 : TPTP v8.1.2. Released v1.0.0.
% 0.13/0.13  % 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 : n024.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
% 0.13/0.35  % WCLimit  : 300
% 0.13/0.35  % DateTime : Sat Aug 26 17:26:53 EDT 2023
% 0.13/0.35  % CPUTime  : 
% 0.19/0.38  Command-line arguments: --no-flatten-goal
% 0.19/0.38  
% 0.19/0.38  % SZS status Unsatisfiable
% 0.19/0.38  
% 0.19/0.38  % SZS output start Proof
% 0.19/0.38  Axiom 1 (f_is_associative): f(X, f(Y, Z)) = f(f(X, Y), Z).
% 0.19/0.38  
% 0.19/0.38  Goal 1 (prove_this): f(a, f(b, f(c, d))) = f(f(f(a, b), c), d).
% 0.19/0.38  Proof:
% 0.19/0.38    f(a, f(b, f(c, d)))
% 0.19/0.38  = { by axiom 1 (f_is_associative) }
% 0.19/0.38    f(f(a, b), f(c, d))
% 0.19/0.38  = { by axiom 1 (f_is_associative) }
% 0.19/0.38    f(f(f(a, b), c), d)
% 0.19/0.38  % SZS output end Proof
% 0.19/0.38  
% 0.19/0.38  RESULT: Unsatisfiable (the axioms are contradictory).
%------------------------------------------------------------------------------