TSTP Solution File: GRP028-1 by Moca---0.1

View Problem - Process Solution

%------------------------------------------------------------------------------
% File     : Moca---0.1
% Problem  : GRP028-1 : TPTP v8.1.0. Released v1.0.0.
% Transfm  : none
% Format   : tptp:raw
% Command  : moca.sh %s

% Computer : n019.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  : 600s
% DateTime : Sat Jul 16 10:51:58 EDT 2022

% Result   : Unsatisfiable 0.72s 0.87s
% Output   : Proof 0.72s
% Verified : 
% SZS Type : -

% Comments : 
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%----WARNING: Could not form TPTP format derivation
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%----ORIGINAL SYSTEM OUTPUT
% 0.03/0.12  % Problem  : GRP028-1 : TPTP v8.1.0. Released v1.0.0.
% 0.03/0.13  % Command  : moca.sh %s
% 0.13/0.35  % Computer : n019.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  : 600
% 0.13/0.35  % DateTime : Tue Jun 14 11:56:09 EDT 2022
% 0.13/0.35  % CPUTime  : 
% 0.72/0.87  % SZS status Unsatisfiable
% 0.72/0.87  % SZS output start Proof
% 0.72/0.87  The input problem is unsatisfiable because
% 0.72/0.87  
% 0.72/0.87  [1] the following set of Horn clauses is unsatisfiable:
% 0.72/0.87  
% 0.72/0.87  	product(X, Y, U) & product(Y, Z, V) & product(X, V, W) ==> product(U, Z, W)
% 0.72/0.87  	product(left_solution(X, Y), X, Y)
% 0.72/0.87  	product(X, right_solution(X, Y), Y)
% 0.72/0.87  	product(not_identity(X), X, not_identity(X)) ==> \bottom
% 0.72/0.87  
% 0.72/0.87  This holds because
% 0.72/0.87  
% 0.72/0.87  [2] the following E entails the following G (Claessen-Smallbone's transformation (2018)):
% 0.72/0.87  
% 0.72/0.87  E:
% 0.72/0.87  	f1(true__, U, Z, W) = product(U, Z, W)
% 0.72/0.87  	f2(true__, X, Y, U, Z, W) = f1(product(X, Y, U), U, Z, W)
% 0.72/0.87  	f3(product(X, V, W), Y, Z, V, X, U, W) = true__
% 0.72/0.87  	f3(true__, Y, Z, V, X, U, W) = f2(product(Y, Z, V), X, Y, U, Z, W)
% 0.72/0.87  	f4(product(not_identity(X), X, not_identity(X))) = true__
% 0.72/0.87  	f4(true__) = false__
% 0.72/0.87  	product(X, right_solution(X, Y), Y) = true__
% 0.72/0.87  	product(left_solution(X, Y), X, Y) = true__
% 0.72/0.87  G:
% 0.72/0.87  	true__ = false__
% 0.72/0.87  
% 0.72/0.87  This holds because
% 0.72/0.87  
% 0.72/0.87  [3] E entails the following ordered TRS and the lhs and rhs of G join by the TRS:
% 0.72/0.87  
% 0.72/0.87  
% 0.72/0.87  	f1(f1(true__, Y2, Y0, Y4), Y4, right_solution(Y0, right_solution(Y2, Y3)), Y3) -> true__
% 0.72/0.87  	f1(f1(true__, Y2, left_solution(Y1, right_solution(Y2, Y3)), Y4), Y4, Y1, Y3) -> true__
% 0.72/0.87  	f1(f1(true__, Y2, right_solution(Y2, Y3), Y4), Y4, right_solution(X1, X1), Y3) -> true__
% 0.72/0.87  	f1(f1(true__, left_solution(Y2, Y3), Y0, Y4), Y4, right_solution(X1, right_solution(left_solution(X1, Y0), Y2)), Y3) -> true__
% 0.72/0.87  	f1(f1(true__, left_solution(Y2, Y3), Y0, Y4), Y4, right_solution(Y0, Y2), Y3) -> true__
% 0.72/0.87  	f1(f1(true__, left_solution(Y2, Y3), Y2, Y4), Y4, right_solution(X1, X1), Y3) -> true__
% 0.72/0.87  	f1(f1(true__, left_solution(Y2, Y3), left_solution(Y1, Y2), Y4), Y4, Y1, Y3) -> true__
% 0.72/0.87  	f1(true__, Y0, right_solution(Y0, Y2), Y2) -> true__
% 0.72/0.87  	f1(true__, Y2, right_solution(Y1, right_solution(left_solution(Y1, Y2), Y3)), Y3) -> true__
% 0.72/0.87  	f1(true__, Y2, right_solution(right_solution(Y0, Y2), right_solution(Y0, Y3)), Y3) -> true__
% 0.72/0.87  	f1(true__, Y3, right_solution(Y2, Y2), Y3) -> true__
% 0.72/0.87  	f1(true__, Y3, right_solution(right_solution(left_solution(Y0, Y1), Y3), Y0), Y1) -> true__
% 0.72/0.87  	f1(true__, left_solution(Y0, Y1), right_solution(right_solution(X1, X1), Y0), Y1) -> true__
% 0.72/0.87  	f1(true__, left_solution(Y1, Y2), Y1, Y2) -> true__
% 0.72/0.87  	f2(f1(true__, Y3, Y4, Y1), left_solution(Y1, Y2), Y3, Y5, Y4, Y2) -> true__
% 0.72/0.87  	f2(f1(true__, Y3, Y4, right_solution(X1, X1)), Y2, Y3, Y5, Y4, Y2) -> true__
% 0.72/0.87  	f2(f1(true__, Y3, Y4, right_solution(X1, right_solution(left_solution(X1, Y0), Y2))), Y0, Y3, Y5, Y4, Y2) -> true__
% 0.72/0.87  	f2(f1(true__, Y3, Y4, right_solution(Y0, Y2)), Y0, Y3, Y5, Y4, Y2) -> true__
% 0.72/0.87  	f2(true__, X, Y, U, Z, W) -> f1(product(X, Y, U), U, Z, W)
% 0.72/0.87  	f3(f1(true__, Y0, Y1, Y2), Y3, Y4, Y1, Y0, Y5, Y2) -> true__
% 0.72/0.87  	f3(product(X, V, W), Y, Z, V, X, U, W) -> true__
% 0.72/0.87  	f3(true__, Y, Z, V, X, U, W) -> f2(product(Y, Z, V), X, Y, U, Z, W)
% 0.72/0.87  	f4(f1(true__, not_identity(Y0), Y0, not_identity(Y0))) -> true__
% 0.72/0.87  	f4(product(not_identity(X), X, not_identity(X))) -> true__
% 0.72/0.87  	f4(true__) -> false__
% 0.72/0.87  	false__ -> true__
% 0.72/0.87  	product(U, Z, W) -> f1(true__, U, Z, W)
% 0.72/0.87  	product(X, right_solution(X, Y), Y) -> true__
% 0.72/0.87  	product(left_solution(X, Y), X, Y) -> true__
% 0.72/0.87  with the LPO induced by
% 0.72/0.87  	not_identity > f4 > right_solution > left_solution > f3 > f2 > product > f1 > false__ > true__
% 0.72/0.87  
% 0.72/0.87  % SZS output end Proof
% 0.72/0.87  
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