%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : LCL187-3 : TPTP v9.3.1. Released v2.3.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n015.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 01:07:03 PM UTC 2026
% Result : Unsatisfiable 0.14s 0.41s
% Output : CNFRefutation 0.14s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 8
% Syntax : Number of formulae : 35 ( 21 unt; 0 def)
% Number of atoms : 62 ( 2 equ)
% Maximal formula atoms : 4 ( 1 avg)
% Number of connectives : 66 ( 39 ~; 27 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Maximal term depth : 5 ( 2 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 2 con; 0-2 aty)
% Number of variables : 72 ( 72 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f2,axiom,
! [A,B] : axiom(implies(A,or(B,A))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f3,axiom,
! [A,B] : axiom(implies(or(A,B),or(B,A))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f4,axiom,
! [A,B,C] : axiom(implies(or(A,or(B,C)),or(B,or(A,C)))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f5,axiom,
! [A,B,C] : axiom(implies(implies(A,B),implies(or(C,A),or(C,B)))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f6,axiom,
! [X,Y] : implies(X,Y) = or(not(X),Y),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f7,axiom,
! [X] :
( ~ axiom(X)
| theorem(X) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f8,axiom,
! [X,Y] :
( ~ theorem(Y)
| ~ theorem(implies(Y,X))
| theorem(X) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f9,negated_conjecture,
~ theorem(implies(p,implies(not(p),q))),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f11,plain,
! [X0,X1] : axiom(implies(X0,or(X1,X0))),
inference(cnf_transformation,[status(thm)],[f2]) ).
fof(f12,plain,
! [X0,X1] : axiom(implies(or(X0,X1),or(X1,X0))),
inference(cnf_transformation,[status(thm)],[f3]) ).
fof(f13,plain,
! [X0,X1,X2] : axiom(implies(or(X0,or(X1,X2)),or(X1,or(X0,X2)))),
inference(cnf_transformation,[status(thm)],[f4]) ).
fof(f14,plain,
! [X0,X1,X2] : axiom(implies(implies(X0,X1),implies(or(X2,X0),or(X2,X1)))),
inference(cnf_transformation,[status(thm)],[f5]) ).
fof(f15,plain,
! [X0,X1] : implies(X0,X1) = or(not(X0),X1),
inference(cnf_transformation,[status(thm)],[f6]) ).
fof(f16,plain,
! [X0] :
( ~ axiom(X0)
| theorem(X0) ),
inference(cnf_transformation,[status(thm)],[f7]) ).
fof(f17,plain,
! [Y] :
( ~ theorem(Y)
| ! [X] :
( ~ theorem(implies(Y,X))
| theorem(X) ) ),
inference(miniscoping,[status(thm)],[f8]) ).
fof(f18,plain,
! [X0,X1] :
( ~ theorem(X1)
| ~ theorem(implies(X1,X0))
| theorem(X0) ),
inference(cnf_transformation,[status(thm)],[f17]) ).
fof(f19,plain,
~ theorem(implies(p,implies(not(p),q))),
inference(cnf_transformation,[status(thm)],[f9]) ).
fof(f23,plain,
! [X0,X1] : axiom(implies(or(X0,not(X1)),implies(X1,X0))),
inference(paramodulation,[status(thm)],[f15,f12]) ).
fof(f24,plain,
! [X0] :
( ~ theorem(X0)
| ~ theorem(implies(X0,implies(p,implies(not(p),q)))) ),
inference(resolution,[status(thm)],[f19,f18]) ).
fof(f26,plain,
! [X0,X1,X2] : axiom(implies(implies(X0,or(X1,X2)),or(X1,or(not(X0),X2)))),
inference(paramodulation,[status(thm)],[f15,f13]) ).
fof(f30,plain,
! [X0,X1,X2] : axiom(implies(implies(X0,or(X1,X2)),or(X1,implies(X0,X2)))),
inference(forward_demodulation,[status(thm)],[f15,f26]) ).
fof(f36,plain,
! [X0,X1,X2] : axiom(implies(implies(X0,X1),implies(implies(X2,X0),or(not(X2),X1)))),
inference(paramodulation,[status(thm)],[f15,f14]) ).
fof(f38,plain,
! [X0,X1,X2] : axiom(implies(implies(X0,X1),implies(implies(X2,X0),implies(X2,X1)))),
inference(forward_demodulation,[status(thm)],[f15,f36]) ).
fof(f40,plain,
! [X0,X1,X2] : axiom(implies(implies(X0,implies(X1,X2)),or(not(X1),implies(X0,X2)))),
inference(paramodulation,[status(thm)],[f15,f30]) ).
fof(f42,plain,
! [X0,X1,X2] : axiom(implies(implies(X0,implies(X1,X2)),implies(X1,implies(X0,X2)))),
inference(forward_demodulation,[status(thm)],[f15,f40]) ).
fof(f49,plain,
! [X0] :
( ~ axiom(implies(X0,implies(p,implies(not(p),q))))
| ~ theorem(X0) ),
inference(resolution,[status(thm)],[f24,f16]) ).
fof(f50,plain,
! [X0,X1] :
( ~ theorem(X1)
| ~ theorem(implies(X1,X0))
| ~ axiom(implies(X0,implies(p,implies(not(p),q)))) ),
inference(resolution,[status(thm)],[f49,f18]) ).
fof(f58,plain,
! [X0,X1,X2] :
( ~ theorem(X2)
| ~ theorem(implies(X2,implies(X1,X0)))
| ~ theorem(X1)
| ~ axiom(implies(X0,implies(p,implies(not(p),q)))) ),
inference(resolution,[status(thm)],[f50,f18]) ).
fof(f80,plain,
! [X0,X1,X2] :
( ~ axiom(implies(X2,implies(X1,X0)))
| ~ theorem(X2)
| ~ theorem(X1)
| ~ axiom(implies(X0,implies(p,implies(not(p),q)))) ),
inference(resolution,[status(thm)],[f58,f16]) ).
fof(f114,plain,
! [X0,X1,X2] :
( ~ axiom(X2)
| ~ axiom(implies(X2,implies(X1,X0)))
| ~ theorem(X1)
| ~ axiom(implies(X0,implies(p,implies(not(p),q)))) ),
inference(resolution,[status(thm)],[f80,f16]) ).
fof(f130,plain,
! [X0,X1,X2] :
( ~ axiom(X2)
| ~ axiom(X1)
| ~ axiom(implies(X1,implies(X2,X0)))
| ~ axiom(implies(X0,implies(p,implies(not(p),q)))) ),
inference(resolution,[status(thm)],[f114,f16]) ).
fof(f213,plain,
! [X0,X1] :
( ~ axiom(X1)
| ~ axiom(X0)
| ~ axiom(implies(X0,implies(X1,implies(not(p),implies(p,q))))) ),
inference(resolution,[status(thm)],[f130,f42]) ).
fof(f226,plain,
! [X0] :
( ~ axiom(implies(not(p),X0))
| ~ axiom(implies(X0,implies(p,q))) ),
inference(resolution,[status(thm)],[f213,f38]) ).
fof(f233,plain,
! [X0] : ~ axiom(implies(or(X0,not(p)),implies(p,q))),
inference(resolution,[status(thm)],[f226,f11]) ).
fof(f234,plain,
$false,
inference(resolution,[status(thm)],[f233,f23]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : LCL187-3 : TPTP v9.3.1. Released v2.3.0.
% 0.00/0.04 % Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.35 % Computer : n015.cluster.edu
% 0.09/0.35 % Model : x86_64 x86_64
% 0.09/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.35 % Memory : 8046.5625MB
% 0.09/0.35 % OS : Linux 6.8.0-71-generic
% 0.09/0.35 % CPULimit : 300
% 0.09/0.35 % WCLimit : 300
% 0.09/0.35 % DateTime : Mon Sep 21 00:12:51 UTC 2026
% 0.09/0.36 % CPUTime :
% 0.09/0.37 % Drodi V4.1.1
% 0.14/0.41 % Refutation found
% 0.14/0.41 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.14/0.41 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.14/0.45 % Elapsed time: 0.074322 seconds
% 0.14/0.45 % CPU time: 0.365949 seconds
% 0.14/0.45 % Total memory used: 72.099 MB
% 0.14/0.45 % Net memory used: 71.313 MB
%------------------------------------------------------------------------------