%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : GRP580-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n018.cluster.edu
% Model : x86_64 x86_64
% CPU : Intel(R) Xeon(R) CPU E5-2620 v4 2.10GHz
% Memory : 8046.5625MB
% OS : Linux 6.8.0-71-generic
% CPULimit : 300s
% WCLimit : 300s
% DateTime : Thu Sep 24 12:36:51 PM UTC 2026
% Result : Unsatisfiable 0.08s 0.38s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : GRP580-1 : TPTP v9.3.1. Bugfixed v2.7.0.
% 0.00/0.03 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.34 % Computer : n018.cluster.edu
% 0.08/0.34 % Model : x86_64 x86_64
% 0.08/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.34 % Memory : 8046.5625MB
% 0.08/0.34 % OS : Linux 6.8.0-71-generic
% 0.08/0.34 % CPULimit : 300
% 0.08/0.34 % WCLimit : 300
% 0.08/0.34 % DateTime : Sun Sep 20 20:19:28 UTC 2026
% 0.08/0.34 % CPUTime :
% 0.08/0.35 % Drodi V4.1.1
% 0.08/0.38 % Refutation found
% 0.08/0.38 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.08/0.38 % SZS output start CNFRefutation for theBenchmark
% 0.08/0.38 fof(f1,axiom,(
% 0.08/0.38 (![A,B,C]: (double_divide(double_divide(A,double_divide(double_divide(double_divide(B,A),C),double_divide(B,identity))),double_divide(identity,identity)) = C ))),
% 0.08/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.08/0.38 fof(f2,axiom,(
% 0.08/0.38 (![A,B]: (multiply(A,B) = double_divide(double_divide(B,A),identity) ))),
% 0.08/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.08/0.38 fof(f3,axiom,(
% 0.08/0.38 (![A]: (inverse(A) = double_divide(A,identity) ))),
% 0.08/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.08/0.38 fof(f4,axiom,(
% 0.08/0.38 (![A]: (identity = double_divide(A,inverse(A)) ))),
% 0.08/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.08/0.38 fof(f5,negated_conjecture,(
% 0.08/0.38 multiply(a,b) != multiply(b,a) ),
% 0.08/0.38 file('/export/starexec/sandbox2/benchmark/theBenchmark.p')).
% 0.08/0.38 fof(f6,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(X0,double_divide(double_divide(double_divide(X1,X0),X2),double_divide(X1,identity))),double_divide(identity,identity))=X2)),
% 0.08/0.38 inference(cnf_transformation,[status(thm)],[f1])).
% 0.08/0.38 fof(f7,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(X0,X1)=double_divide(double_divide(X1,X0),identity))),
% 0.08/0.38 inference(cnf_transformation,[status(thm)],[f2])).
% 0.08/0.38 fof(f8,plain,(
% 0.08/0.38 ![X0]: (inverse(X0)=double_divide(X0,identity))),
% 0.08/0.38 inference(cnf_transformation,[status(thm)],[f3])).
% 0.08/0.38 fof(f9,plain,(
% 0.08/0.38 ![X0]: (identity=double_divide(X0,inverse(X0)))),
% 0.08/0.38 inference(cnf_transformation,[status(thm)],[f4])).
% 0.08/0.38 fof(f10,plain,(
% 0.08/0.38 ~multiply(a,b)=multiply(b,a)),
% 0.08/0.38 inference(cnf_transformation,[status(thm)],[f5])).
% 0.08/0.38 fof(f14,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(X0,double_divide(double_divide(double_divide(X1,X0),X2),double_divide(X1,identity))),inverse(identity))=X2)),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f8,f6])).
% 0.08/0.38 fof(f15,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(X0,X1)=inverse(double_divide(X1,X0)))),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f8,f7])).
% 0.08/0.38 fof(f16,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(X0,double_divide(double_divide(double_divide(X1,X0),X2),inverse(X1))),inverse(identity))=X2)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f14])).
% 0.08/0.38 fof(f17,plain,(
% 0.08/0.38 ![X0]: (multiply(identity,X0)=inverse(inverse(X0)))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f8,f15])).
% 0.08/0.38 fof(f18,plain,(
% 0.08/0.38 ![X0,X1]: (identity=double_divide(double_divide(X0,X1),multiply(X1,X0)))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f15,f9])).
% 0.08/0.38 fof(f46,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(X0,X1),inverse(identity))=double_divide(double_divide(double_divide(X2,double_divide(identity,X0)),X1),inverse(X2)))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f16,f16])).
% 0.08/0.38 fof(f47,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(double_divide(double_divide(double_divide(X0,X1),X2),inverse(X0)),double_divide(X2,inverse(X1))),inverse(identity))=inverse(identity))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f16,f16])).
% 0.08/0.38 fof(f48,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(X0,double_divide(identity,inverse(X1))),inverse(identity))=multiply(X0,X1))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f18,f16])).
% 0.08/0.38 fof(f50,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(X0,double_divide(inverse(double_divide(X1,X0)),inverse(X1))),inverse(identity))=identity)),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f8,f16])).
% 0.08/0.38 fof(f51,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (double_divide(double_divide(inverse(identity),double_divide(double_divide(X0,X1),inverse(double_divide(X2,double_divide(double_divide(double_divide(X3,X2),X0),inverse(X3)))))),inverse(identity))=X1)),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f16,f16])).
% 0.08/0.38 fof(f60,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(X0,double_divide(multiply(X0,X1),inverse(X1))),inverse(identity))=identity)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f50])).
% 0.08/0.38 fof(f61,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (double_divide(double_divide(inverse(identity),double_divide(double_divide(X0,X1),multiply(double_divide(double_divide(double_divide(X2,X3),X0),inverse(X2)),X3))),inverse(identity))=X1)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f51])).
% 0.08/0.38 fof(f65,plain,(
% 0.08/0.38 ![X0]: (double_divide(double_divide(X0,identity),inverse(identity))=multiply(X0,identity))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f9,f48])).
% 0.08/0.38 fof(f67,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(X0,multiply(double_divide(identity,X0),X1)),inverse(identity))=double_divide(identity,inverse(X1)))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f48,f16])).
% 0.08/0.38 fof(f73,plain,(
% 0.08/0.38 ![X0]: (double_divide(inverse(X0),inverse(identity))=multiply(X0,identity))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f65])).
% 0.08/0.38 fof(f77,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(multiply(X0,X1),inverse(identity))=multiply(double_divide(X1,X0),identity))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f15,f73])).
% 0.08/0.38 fof(f92,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(inverse(X0),inverse(identity)),inverse(identity))=double_divide(multiply(X1,X0),inverse(X1)))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f48,f46])).
% 0.08/0.38 fof(f95,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(X0,identity),inverse(identity))=double_divide(inverse(double_divide(X1,double_divide(identity,X0))),inverse(X1)))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f8,f46])).
% 0.08/0.38 fof(f110,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(multiply(X0,identity),inverse(identity))=double_divide(multiply(X1,X0),inverse(X1)))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f73,f92])).
% 0.08/0.38 fof(f112,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(double_divide(identity,X0),identity)=double_divide(multiply(X1,X0),inverse(X1)))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f77,f110])).
% 0.08/0.38 fof(f114,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(inverse(X0),inverse(identity))=double_divide(inverse(double_divide(X1,double_divide(identity,X0))),inverse(X1)))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f95])).
% 0.08/0.38 fof(f115,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(X0,identity)=double_divide(inverse(double_divide(X1,double_divide(identity,X0))),inverse(X1)))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f73,f114])).
% 0.08/0.38 fof(f116,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(X0,identity)=double_divide(multiply(double_divide(identity,X0),X1),inverse(X1)))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f115])).
% 0.08/0.38 fof(f155,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (double_divide(double_divide(inverse(identity),double_divide(double_divide(inverse(identity),X0),inverse(double_divide(double_divide(double_divide(double_divide(X1,X2),X3),inverse(X1)),double_divide(X3,inverse(X2)))))),inverse(identity))=X0)),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f47,f16])).
% 0.08/0.38 fof(f193,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (double_divide(double_divide(inverse(identity),double_divide(double_divide(inverse(identity),X0),multiply(double_divide(X1,inverse(X2)),double_divide(double_divide(double_divide(X3,X2),X1),inverse(X3))))),inverse(identity))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f155])).
% 0.08/0.38 fof(f203,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(identity,double_divide(double_divide(multiply(double_divide(identity,X0),X1),inverse(X1)),inverse(X0))),inverse(identity))=inverse(identity))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f60,f47])).
% 0.08/0.38 fof(f218,plain,(
% 0.08/0.38 ![X0]: (double_divide(double_divide(identity,double_divide(multiply(X0,identity),inverse(X0))),inverse(identity))=inverse(identity))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f116,f203])).
% 0.08/0.38 fof(f219,plain,(
% 0.08/0.38 double_divide(double_divide(identity,multiply(double_divide(identity,identity),identity)),inverse(identity))=inverse(identity)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f112,f218])).
% 0.08/0.38 fof(f220,plain,(
% 0.08/0.38 double_divide(identity,inverse(identity))=inverse(identity)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f67,f219])).
% 0.08/0.38 fof(f222,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(double_divide(double_divide(double_divide(X0,X1),X2),inverse(X0)),double_divide(X2,inverse(X1))),inverse(identity))=identity)),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f283,f47])).
% 0.08/0.38 fof(f225,plain,(
% 0.08/0.38 ![X0]: (double_divide(inverse(X0),identity)=multiply(X0,identity))),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f283,f73])).
% 0.08/0.38 fof(f226,plain,(
% 0.08/0.38 ![X0,X1]: (double_divide(double_divide(X0,double_divide(identity,inverse(X1))),identity)=multiply(X0,X1))),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f283,f48])).
% 0.08/0.38 fof(f227,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(X0,double_divide(double_divide(double_divide(X1,X0),X2),inverse(X1))),identity)=X2)),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f283,f16])).
% 0.08/0.38 fof(f236,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (double_divide(double_divide(inverse(identity),double_divide(double_divide(inverse(identity),X0),multiply(double_divide(X1,inverse(X2)),double_divide(double_divide(double_divide(X3,X2),X1),inverse(X3))))),identity)=X0)),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f283,f193])).
% 0.08/0.38 fof(f282,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (double_divide(double_divide(inverse(identity),double_divide(double_divide(X0,X1),multiply(double_divide(double_divide(double_divide(X2,X3),X0),inverse(X2)),X3))),identity)=X1)),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f283,f61])).
% 0.08/0.38 fof(f283,plain,(
% 0.08/0.38 identity=inverse(identity)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f9,f220])).
% 0.08/0.38 fof(f326,plain,(
% 0.08/0.38 ![X0,X1,X2]: (double_divide(double_divide(double_divide(double_divide(double_divide(X0,X1),X2),inverse(X0)),double_divide(X2,inverse(X1))),identity)=identity)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f283,f222])).
% 0.08/0.38 fof(f327,plain,(
% 0.08/0.38 ![X0,X1,X2]: (inverse(double_divide(double_divide(double_divide(double_divide(X0,X1),X2),inverse(X0)),double_divide(X2,inverse(X1))))=identity)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f326])).
% 0.08/0.38 fof(f328,plain,(
% 0.08/0.38 ![X0,X1,X2]: (multiply(double_divide(X0,inverse(X1)),double_divide(double_divide(double_divide(X2,X1),X0),inverse(X2)))=identity)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f327])).
% 0.08/0.38 fof(f337,plain,(
% 0.08/0.38 ![X0]: (inverse(inverse(X0))=multiply(X0,identity))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f225])).
% 0.08/0.38 fof(f338,plain,(
% 0.08/0.38 ![X0,X1]: (inverse(double_divide(X0,double_divide(identity,inverse(X1))))=multiply(X0,X1))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f226])).
% 0.08/0.38 fof(f340,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(double_divide(identity,inverse(X0)),X1)=multiply(X1,X0))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f338])).
% 0.08/0.38 fof(f341,plain,(
% 0.08/0.38 ![X0,X1,X2]: (inverse(double_divide(X0,double_divide(double_divide(double_divide(X1,X0),X2),inverse(X1))))=X2)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f227])).
% 0.08/0.38 fof(f342,plain,(
% 0.08/0.38 ![X0,X1,X2]: (multiply(double_divide(double_divide(double_divide(X0,X1),X2),inverse(X0)),X1)=X2)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f341])).
% 0.08/0.38 fof(f365,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (inverse(double_divide(inverse(identity),double_divide(double_divide(inverse(identity),X0),multiply(double_divide(X1,inverse(X2)),double_divide(double_divide(double_divide(X3,X2),X1),inverse(X3))))))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f236])).
% 0.08/0.38 fof(f366,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (multiply(double_divide(double_divide(inverse(identity),X0),multiply(double_divide(X1,inverse(X2)),double_divide(double_divide(double_divide(X3,X2),X1),inverse(X3)))),inverse(identity))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f365])).
% 0.08/0.38 fof(f367,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (multiply(double_divide(double_divide(identity,X0),multiply(double_divide(X1,inverse(X2)),double_divide(double_divide(double_divide(X3,X2),X1),inverse(X3)))),inverse(identity))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f283,f366])).
% 0.08/0.38 fof(f368,plain,(
% 0.08/0.38 ![X0]: (multiply(double_divide(double_divide(identity,X0),identity),inverse(identity))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f328,f367])).
% 0.08/0.38 fof(f369,plain,(
% 0.08/0.38 ![X0]: (multiply(inverse(double_divide(identity,X0)),inverse(identity))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f368])).
% 0.08/0.38 fof(f370,plain,(
% 0.08/0.38 ![X0]: (multiply(multiply(X0,identity),inverse(identity))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f369])).
% 0.08/0.38 fof(f371,plain,(
% 0.08/0.38 ![X0]: (multiply(inverse(inverse(X0)),inverse(identity))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f337,f370])).
% 0.08/0.38 fof(f372,plain,(
% 0.08/0.38 ![X0]: (multiply(inverse(inverse(X0)),identity)=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f283,f371])).
% 0.08/0.38 fof(f373,plain,(
% 0.08/0.38 ![X0]: (inverse(inverse(inverse(inverse(X0))))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f337,f372])).
% 0.08/0.38 fof(f558,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (inverse(double_divide(inverse(identity),double_divide(double_divide(X0,X1),multiply(double_divide(double_divide(double_divide(X2,X3),X0),inverse(X2)),X3))))=X1)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f8,f282])).
% 0.08/0.38 fof(f559,plain,(
% 0.08/0.38 ![X0,X1,X2,X3]: (multiply(double_divide(double_divide(X0,X1),multiply(double_divide(double_divide(double_divide(X2,X3),X0),inverse(X2)),X3)),inverse(identity))=X1)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f558])).
% 0.08/0.38 fof(f560,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(double_divide(double_divide(X0,X1),X0),inverse(identity))=X1)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f342,f559])).
% 0.08/0.38 fof(f561,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(double_divide(double_divide(X0,X1),X0),identity)=X1)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f283,f560])).
% 0.08/0.38 fof(f562,plain,(
% 0.08/0.38 ![X0,X1]: (inverse(inverse(double_divide(double_divide(X0,X1),X0)))=X1)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f337,f561])).
% 0.08/0.38 fof(f565,plain,(
% 0.08/0.38 ![X0,X1]: (inverse(multiply(X0,double_divide(X0,X1)))=X1)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f15,f562])).
% 0.08/0.38 fof(f769,plain,(
% 0.08/0.38 ![X0]: (inverse(multiply(X0,identity))=inverse(X0))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f9,f565])).
% 0.08/0.38 fof(f784,plain,(
% 0.08/0.38 ![X0]: (inverse(inverse(X0))=X0)),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f795,f373])).
% 0.08/0.38 fof(f795,plain,(
% 0.08/0.38 ![X0]: (inverse(inverse(inverse(X0)))=inverse(X0))),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f337,f769])).
% 0.08/0.38 fof(f812,plain,(
% 0.08/0.38 ![X0]: (multiply(identity,X0)=X0)),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f784,f17])).
% 0.08/0.38 fof(f819,plain,(
% 0.08/0.38 ![X0]: (X0=multiply(X0,identity))),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f784,f337])).
% 0.08/0.38 fof(f907,plain,(
% 0.08/0.38 ![X0]: (double_divide(identity,inverse(X0))=multiply(identity,X0))),
% 0.08/0.38 inference(paramodulation,[status(thm)],[f819,f340])).
% 0.08/0.38 fof(f919,plain,(
% 0.08/0.38 ![X0,X1]: (multiply(X0,X1)=multiply(X1,X0))),
% 0.08/0.38 inference(backward_demodulation,[status(thm)],[f923,f340])).
% 0.08/0.38 fof(f923,plain,(
% 0.08/0.38 ![X0]: (double_divide(identity,inverse(X0))=X0)),
% 0.08/0.38 inference(forward_demodulation,[status(thm)],[f812,f907])).
% 0.08/0.38 fof(f944,plain,(
% 0.08/0.38 $false),
% 0.08/0.38 inference(backward_subsumption_resolution,[status(thm)],[f10,f919])).
% 0.08/0.38 % SZS output end CNFRefutation for theBenchmark.p
% 8.81/1.60 % Elapsed time: 1.033407 seconds
% 8.81/1.60 % CPU time: 0.104199 seconds
% 8.81/1.60 % Total memory used: 5.519 MB
% 8.81/1.60 % Net memory used: 5.312 MB
%------------------------------------------------------------------------------