%------------------------------------------------------------------------------
% File : Drodi-SAT---4.1.1
% Problem : GRP481-1 : TPTP v9.3.1. Released v2.6.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n002.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 12:36:42 PM UTC 2026
% Result : Unsatisfiable 0.09s 0.53s
% Output : Assurance 0s
% Verified :
% SZS Type : -
% Comments :
%------------------------------------------------------------------------------
%----No solution output by system
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : GRP481-1 : TPTP v9.3.1. Released v2.6.0.
% 0.00/0.04 % Command : drodi -satmode(on) -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.51 % Computer : n002.cluster.edu
% 0.09/0.51 % Model : x86_64 x86_64
% 0.09/0.51 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.51 % Memory : 8046.5625MB
% 0.09/0.51 % OS : Linux 6.8.0-71-generic
% 0.09/0.51 % CPULimit : 300
% 0.09/0.51 % WCLimit : 300
% 0.09/0.51 % DateTime : Sun Sep 20 20:17:03 UTC 2026
% 0.09/0.52 % CPUTime :
% 0.09/0.52 % Drodi V4.1.1
% 0.09/0.53 % Refutation found
% 0.09/0.53 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.09/0.53 % SZS output start CNFRefutation for theBenchmark
% 0.09/0.53 fof(f1,axiom,(
% 0.09/0.53 (![A,B,C,D]: (double_divide(double_divide(double_divide(A,double_divide(B,identity)),double_divide(double_divide(C,double_divide(D,double_divide(D,identity))),double_divide(A,identity))),B) = C ))),
% 0.09/0.53 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.09/0.53 fof(f2,axiom,(
% 0.09/0.53 (![A,B]: (multiply(A,B) = double_divide(double_divide(B,A),identity) ))),
% 0.09/0.53 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.09/0.53 fof(f3,axiom,(
% 0.09/0.53 (![A]: (inverse(A) = double_divide(A,identity) ))),
% 0.09/0.53 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.09/0.53 fof(f4,axiom,(
% 0.09/0.53 (![A]: (identity = double_divide(A,inverse(A)) ))),
% 0.09/0.53 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.09/0.53 fof(f5,negated_conjecture,(
% 0.09/0.53 multiply(inverse(a1),a1) != identity ),
% 0.09/0.53 file('/export/starexec/sandbox/benchmark/theBenchmark.p')).
% 0.09/0.53 fof(f6,plain,(
% 0.09/0.53 ![X0,X1,X2,X3]: (double_divide(double_divide(double_divide(X0,double_divide(X1,identity)),double_divide(double_divide(X2,double_divide(X3,double_divide(X3,identity))),double_divide(X0,identity))),X1)=X2)),
% 0.09/0.53 inference(cnf_transformation,[status(thm)],[f1])).
% 0.09/0.53 fof(f7,plain,(
% 0.09/0.53 ![X0,X1]: (multiply(X0,X1)=double_divide(double_divide(X1,X0),identity))),
% 0.09/0.53 inference(cnf_transformation,[status(thm)],[f2])).
% 0.09/0.53 fof(f8,plain,(
% 0.09/0.53 ![X0]: (inverse(X0)=double_divide(X0,identity))),
% 0.09/0.53 inference(cnf_transformation,[status(thm)],[f3])).
% 0.09/0.53 fof(f9,plain,(
% 0.09/0.53 ![X0]: (identity=double_divide(X0,inverse(X0)))),
% 0.09/0.53 inference(cnf_transformation,[status(thm)],[f4])).
% 0.09/0.53 fof(f10,plain,(
% 0.09/0.53 ~multiply(inverse(a1),a1)=identity),
% 0.09/0.53 inference(cnf_transformation,[status(thm)],[f5])).
% 0.09/0.53 fof(f14,plain,(
% 0.09/0.53 ![X0,X1]: (multiply(X0,X1)=inverse(double_divide(X1,X0)))),
% 0.09/0.53 inference(backward_demodulation,[status(thm)],[f8,f7])).
% 0.09/0.53 fof(f15,plain,(
% 0.09/0.53 ![X0,X1,X2,X3]: (double_divide(double_divide(double_divide(X0,double_divide(X1,identity)),double_divide(double_divide(X2,double_divide(X3,double_divide(X3,identity))),inverse(X0))),X1)=X2)),
% 0.09/0.53 inference(backward_demodulation,[status(thm)],[f8,f6])).
% 0.09/0.53 fof(f16,plain,(
% 0.09/0.53 ![X0,X1,X2,X3]: (double_divide(double_divide(double_divide(X0,inverse(X1)),double_divide(double_divide(X2,double_divide(X3,double_divide(X3,identity))),inverse(X0))),X1)=X2)),
% 0.09/0.53 inference(forward_demodulation,[status(thm)],[f8,f15])).
% 0.09/0.53 fof(f17,plain,(
% 0.09/0.53 ![X0,X1,X2,X3]: (double_divide(double_divide(double_divide(X0,inverse(X1)),double_divide(double_divide(X2,double_divide(X3,inverse(X3))),inverse(X0))),X1)=X2)),
% 0.09/0.53 inference(forward_demodulation,[status(thm)],[f8,f16])).
% 0.09/0.53 fof(f18,plain,(
% 0.09/0.53 ![X0,X1,X2]: (double_divide(double_divide(double_divide(X0,inverse(X1)),double_divide(double_divide(X2,identity),inverse(X0))),X1)=X2)),
% 0.09/0.53 inference(forward_demodulation,[status(thm)],[f9,f17])).
% 0.09/0.53 fof(f19,plain,(
% 0.09/0.53 ![X0,X1,X2]: (double_divide(double_divide(double_divide(X0,inverse(X1)),double_divide(inverse(X2),inverse(X0))),X1)=X2)),
% 0.09/0.53 inference(forward_demodulation,[status(thm)],[f8,f18])).
% 0.09/0.53 fof(f20,plain,(
% 0.09/0.53 ![X0]: (multiply(inverse(X0),X0)=inverse(identity))),
% 0.09/0.53 inference(paramodulation,[status(thm)],[f9,f14])).
% 0.09/0.53 fof(f23,plain,(
% 0.09/0.53 ~inverse(identity)=identity),
% 0.09/0.53 inference(backward_demodulation,[status(thm)],[f20,f10])).
% 0.09/0.53 fof(f28,plain,(
% 0.09/0.53 ![X0,X1]: (double_divide(double_divide(double_divide(inverse(X0),inverse(X1)),identity),X1)=X0)),
% 0.09/0.53 inference(paramodulation,[status(thm)],[f9,f19])).
% 0.09/0.53 fof(f36,plain,(
% 0.09/0.53 ![X0,X1]: (double_divide(inverse(double_divide(inverse(X0),inverse(X1))),X1)=X0)),
% 0.09/0.53 inference(forward_demodulation,[status(thm)],[f8,f28])).
% 0.09/0.53 fof(f37,plain,(
% 0.09/0.53 ![X0,X1]: (double_divide(multiply(inverse(X0),inverse(X1)),X0)=X1)),
% 0.09/0.53 inference(forward_demodulation,[status(thm)],[f14,f36])).
% 0.09/0.53 fof(f65,plain,(
% 0.09/0.53 ![X0]: (double_divide(inverse(identity),inverse(X0))=X0)),
% 0.09/0.53 inference(paramodulation,[status(thm)],[f20,f37])).
% 0.09/0.53 fof(f77,plain,(
% 0.09/0.53 identity=inverse(identity)),
% 0.09/0.53 inference(paramodulation,[status(thm)],[f9,f65])).
% 0.09/0.53 fof(f85,plain,(
% 0.09/0.53 $false),
% 0.09/0.53 inference(forward_subsumption_resolution,[status(thm)],[f77,f23])).
% 0.09/0.53 % SZS output end CNFRefutation for theBenchmark.p
% 3.63/1.76 % Elapsed time: 1.027242 seconds
% 3.63/1.76 % CPU time: 0.031662 seconds
% 3.63/1.76 % Total memory used: 778.080 KB
% 3.63/1.76 % Net memory used: 760.560 KB
%------------------------------------------------------------------------------