%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : GRP704-11 : TPTP v9.3.1. Released v8.1.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n005.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 12:35:11 PM UTC 2026
% Result : Unsatisfiable 0.09s 0.38s
% Output : CNFRefutation 0.09s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 9
% Syntax : Number of formulae : 25 ( 25 unt; 4 def)
% Number of atoms : 25 ( 24 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 3 ( 3 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 3 ( 2 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 11 ( 11 usr; 9 con; 0-2 aty)
% Number of variables : 20 ( 20 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [A,B] : mult(A,ld(A,B)) = B,
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f6,axiom,
! [A] : mult(unit,A) = A,
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f9,axiom,
! [A,B] : mult(A,mult(B,op_c)) = mult(mult(A,B),op_c),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f13,axiom,
! [A,B] : op_f = mult(A,mult(B,ld(mult(A,B),op_c))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f14,negated_conjecture,
mult(x4,mult(x5,op_f)) != mult(mult(x4,x5),op_f),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f15,plain,
! [X0,X1] : mult(X0,ld(X0,X1)) = X1,
inference(cnf_transformation,[status(thm)],[f1]) ).
fof(f20,plain,
! [X0] : mult(unit,X0) = X0,
inference(cnf_transformation,[status(thm)],[f6]) ).
fof(f23,plain,
! [X0,X1] : mult(X0,mult(X1,op_c)) = mult(mult(X0,X1),op_c),
inference(cnf_transformation,[status(thm)],[f9]) ).
fof(f27,plain,
! [X0,X1] : op_f = mult(X0,mult(X1,ld(mult(X0,X1),op_c))),
inference(cnf_transformation,[status(thm)],[f13]) ).
fof(f28,plain,
mult(x4,mult(x5,op_f)) != mult(mult(x4,x5),op_f),
inference(cnf_transformation,[status(thm)],[f14]) ).
fof(f29,definition,
sF1_fnc = mult(x5,op_f),
introduced(definition,[new_symbols(definition,[sF1_fnc])],[function_definition]) ).
fof(f30,definition,
sF0_fnc = mult(x4,sF1_fnc),
introduced(definition,[new_symbols(definition,[sF0_fnc])],[function_definition]) ).
fof(f31,definition,
sF3_fnc = mult(x4,x5),
introduced(definition,[new_symbols(definition,[sF3_fnc])],[function_definition]) ).
fof(f32,definition,
sF2_fnc = mult(sF3_fnc,op_f),
introduced(definition,[new_symbols(definition,[sF2_fnc])],[function_definition]) ).
fof(f33,plain,
sF0_fnc != sF2_fnc,
inference(definition_folding,[],[f28,f32,f31,f30,f29]) ).
fof(f237,plain,
! [X0] : op_f = mult(X0,ld(mult(unit,X0),op_c)),
inference(paramodulation,[status(thm)],[f27,f20]) ).
fof(f255,plain,
! [X0] : op_f = mult(X0,ld(X0,op_c)),
inference(forward_demodulation,[status(thm)],[f20,f237]) ).
fof(f609,plain,
! [X0,X1] : mult(X0,mult(X1,op_c)) = mult(mult(X0,X1),op_f),
inference(backward_demodulation,[status(thm)],[f621,f23]) ).
fof(f621,plain,
op_f = op_c,
inference(forward_demodulation,[status(thm)],[f15,f255]) ).
fof(f624,plain,
! [X0,X1] : mult(X0,mult(X1,op_f)) = mult(mult(X0,X1),op_f),
inference(forward_demodulation,[status(thm)],[f621,f609]) ).
fof(f873,plain,
mult(x4,mult(x5,op_f)) = mult(sF3_fnc,op_f),
inference(paramodulation,[status(thm)],[f31,f624]) ).
fof(f908,plain,
mult(x4,sF1_fnc) = mult(sF3_fnc,op_f),
inference(forward_demodulation,[status(thm)],[f29,f873]) ).
fof(f909,plain,
sF0_fnc = mult(sF3_fnc,op_f),
inference(forward_demodulation,[status(thm)],[f30,f908]) ).
fof(f910,plain,
sF0_fnc = sF2_fnc,
inference(forward_demodulation,[status(thm)],[f32,f909]) ).
fof(f911,plain,
$false,
inference(forward_subsumption_resolution,[status(thm)],[f910,f33]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : GRP704-11 : TPTP v9.3.1. Released v8.1.0.
% 0.00/0.04 % Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.36 % Computer : n005.cluster.edu
% 0.09/0.36 % Model : x86_64 x86_64
% 0.09/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.36 % Memory : 8046.5625MB
% 0.09/0.36 % OS : Linux 6.8.0-71-generic
% 0.09/0.36 % CPULimit : 300
% 0.09/0.36 % WCLimit : 300
% 0.09/0.36 % DateTime : Sun Sep 20 20:34:18 UTC 2026
% 0.09/0.36 % CPUTime :
% 0.09/0.36 % Drodi V4.1.1
% 0.09/0.38 % Refutation found
% 0.09/0.38 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.09/0.38 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.13/0.40 % Elapsed time: 0.033028 seconds
% 0.13/0.40 % CPU time: 0.092840 seconds
% 0.13/0.40 % Total memory used: 5.465 MB
% 0.13/0.40 % Net memory used: 5.399 MB
%------------------------------------------------------------------------------