%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : NLP143-1 : TPTP v9.3.1. Released v2.4.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n012.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 01:31:22 PM UTC 2026
% Result : Unsatisfiable 0.04s 0.32s
% Output : CNFRefutation 0.04s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 20
% Syntax : Number of formulae : 66 ( 5 unt; 5 def)
% Number of atoms : 131 ( 7 equ)
% Maximal formula atoms : 4 ( 1 avg)
% Number of connectives : 131 ( 66 ~; 60 |; 0 &)
% ( 5 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 4 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 20 ( 18 usr; 6 prp; 0-4 aty)
% Number of functors : 5 ( 5 usr; 2 con; 0-2 aty)
% Number of variables : 73 ( 73 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f2,axiom,
! [U,V] :
( man(U,V)
| ~ fellow(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f14,axiom,
! [U,V] :
( male(U,V)
| ~ man(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f30,axiom,
! [U,V] :
( artifact(U,V)
| ~ instrumentality(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f31,axiom,
! [U,V] :
( object(U,V)
| ~ artifact(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f35,axiom,
! [U,V] :
( unisex(U,V)
| ~ object(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f48,axiom,
! [U,V] :
( seat(U,V)
| ~ frontseat(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f49,axiom,
! [U,V] :
( furniture(U,V)
| ~ seat(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f50,axiom,
! [U,V] :
( instrumentality(U,V)
| ~ furniture(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f52,axiom,
! [U,V] :
( ~ unisex(U,V)
| ~ male(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f59,axiom,
! [U,V,W,X] :
( W = X
| ~ be(U,V,W,X) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f60,axiom,
! [U,V] :
( member(U,skf10(V,U),V)
| ~ two(U,V) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f73,negated_conjecture,
two(skc6,skc7),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f88,negated_conjecture,
! [U] :
( fellow(skc6,U)
| ~ member(skc6,U,skc7) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f89,negated_conjecture,
! [U,V] :
( frontseat(skc6,skf5(V))
| ~ member(skc6,U,skc7) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f92,negated_conjecture,
! [U] :
( be(skc6,skf6(U),U,skf5(U))
| ~ member(skc6,U,skc7) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p') ).
fof(f94,plain,
! [X0,X1] :
( man(X0,X1)
| ~ fellow(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f2]) ).
fof(f106,plain,
! [X0,X1] :
( male(X0,X1)
| ~ man(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f14]) ).
fof(f122,plain,
! [X0,X1] :
( artifact(X0,X1)
| ~ instrumentality(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f30]) ).
fof(f123,plain,
! [X0,X1] :
( object(X0,X1)
| ~ artifact(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f31]) ).
fof(f127,plain,
! [X0,X1] :
( unisex(X0,X1)
| ~ object(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f35]) ).
fof(f140,plain,
! [X0,X1] :
( seat(X0,X1)
| ~ frontseat(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f48]) ).
fof(f141,plain,
! [X0,X1] :
( furniture(X0,X1)
| ~ seat(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f49]) ).
fof(f142,plain,
! [X0,X1] :
( instrumentality(X0,X1)
| ~ furniture(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f50]) ).
fof(f144,plain,
! [X0,X1] :
( ~ unisex(X0,X1)
| ~ male(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f52]) ).
fof(f151,plain,
! [W,X] :
( W = X
| ! [U,V] : ~ be(U,V,W,X) ),
inference(miniscoping,[status(thm)],[f59]) ).
fof(f152,plain,
! [X0,X1,X2,X3] :
( X2 = X3
| ~ be(X0,X1,X2,X3) ),
inference(cnf_transformation,[status(thm)],[f151]) ).
fof(f153,plain,
! [X0,X1] :
( member(X0,skf10(X1,X0),X1)
| ~ two(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f60]) ).
fof(f170,plain,
two(skc6,skc7),
inference(cnf_transformation,[status(thm)],[f73]) ).
fof(f185,plain,
! [X0] :
( fellow(skc6,X0)
| ~ member(skc6,X0,skc7) ),
inference(cnf_transformation,[status(thm)],[f88]) ).
fof(f186,plain,
( ! [V] : frontseat(skc6,skf5(V))
| ! [U] : ~ member(skc6,U,skc7) ),
inference(miniscoping,[status(thm)],[f89]) ).
fof(f187,plain,
! [X0,X1] :
( frontseat(skc6,skf5(X1))
| ~ member(skc6,X0,skc7) ),
inference(cnf_transformation,[status(thm)],[f186]) ).
fof(f192,plain,
! [X0] :
( be(skc6,skf6(X0),X0,skf5(X0))
| ~ member(skc6,X0,skc7) ),
inference(cnf_transformation,[status(thm)],[f92]) ).
fof(f193,definition,
! [X0] :
( sQ0_spl
<=> ~ member(skc6,X0,skc7) ),
introduced(definition,[new_symbols(definition,[sQ0_spl])],[split_symbol_definition]) ).
fof(f194,plain,
! [X0] :
( ~ sQ0_spl
| ~ member(skc6,X0,skc7) ),
inference(component_clause,[status(thm)],[f193]) ).
fof(f196,definition,
! [X1] :
( sQ1_spl
<=> frontseat(skc6,skf5(X1)) ),
introduced(definition,[new_symbols(definition,[sQ1_spl])],[split_symbol_definition]) ).
fof(f197,plain,
! [X0] :
( ~ sQ1_spl
| frontseat(skc6,skf5(X0)) ),
inference(component_clause,[status(thm)],[f196]) ).
fof(f199,plain,
( sQ1_spl
| sQ0_spl ),
inference(split_clause,[status(thm)],[f187,f193,f196]) ).
fof(f280,plain,
( ~ sQ0_spl
| ~ two(skc6,skc7) ),
inference(resolution,[status(thm)],[f153,f194]) ).
fof(f281,plain,
( ~ sQ0_spl
| $false ),
inference(forward_subsumption_resolution,[status(thm)],[f280,f170]) ).
fof(f282,plain,
~ sQ0_spl,
inference(contradiction_clause,[status(thm)],[f281]) ).
fof(f283,plain,
! [X0] :
( ~ sQ1_spl
| seat(skc6,skf5(X0)) ),
inference(resolution,[status(thm)],[f197,f140]) ).
fof(f286,plain,
! [X0] :
( ~ sQ1_spl
| furniture(skc6,skf5(X0)) ),
inference(resolution,[status(thm)],[f283,f141]) ).
fof(f292,plain,
! [X0] :
( ~ sQ1_spl
| instrumentality(skc6,skf5(X0)) ),
inference(resolution,[status(thm)],[f286,f142]) ).
fof(f295,plain,
! [X0] :
( X0 = skf5(X0)
| ~ member(skc6,X0,skc7) ),
inference(resolution,[status(thm)],[f192,f152]) ).
fof(f296,plain,
! [X0] :
( ~ sQ1_spl
| artifact(skc6,skf5(X0)) ),
inference(resolution,[status(thm)],[f292,f122]) ).
fof(f297,plain,
! [X0] :
( ~ sQ1_spl
| object(skc6,skf5(X0)) ),
inference(resolution,[status(thm)],[f296,f123]) ).
fof(f298,plain,
! [X0] :
( ~ sQ1_spl
| unisex(skc6,skf5(X0)) ),
inference(resolution,[status(thm)],[f297,f127]) ).
fof(f306,plain,
( ~ two(skc6,skc7)
| skf10(skc7,skc6) = skf5(skf10(skc7,skc6)) ),
inference(resolution,[status(thm)],[f295,f153]) ).
fof(f307,definition,
( sQ8_spl
<=> skf10(skc7,skc6) = skf5(skf10(skc7,skc6)) ),
introduced(definition,[new_symbols(definition,[sQ8_spl])],[split_symbol_definition]) ).
fof(f308,plain,
( ~ sQ8_spl
| skf10(skc7,skc6) = skf5(skf10(skc7,skc6)) ),
inference(component_clause,[status(thm)],[f307]) ).
fof(f310,definition,
( sQ9_spl
<=> two(skc6,skc7) ),
introduced(definition,[new_symbols(definition,[sQ9_spl])],[split_symbol_definition]) ).
fof(f312,plain,
( sQ9_spl
| ~ two(skc6,skc7) ),
inference(component_clause,[status(thm)],[f310]) ).
fof(f313,plain,
( ~ sQ9_spl
| sQ8_spl ),
inference(split_clause,[status(thm)],[f306,f307,f310]) ).
fof(f319,plain,
( sQ9_spl
| $false ),
inference(forward_subsumption_resolution,[status(thm)],[f312,f170]) ).
fof(f320,plain,
sQ9_spl,
inference(contradiction_clause,[status(thm)],[f319]) ).
fof(f322,plain,
( ~ two(skc6,skc7)
| fellow(skc6,skf10(skc7,skc6)) ),
inference(resolution,[status(thm)],[f185,f153]) ).
fof(f327,definition,
( sQ12_spl
<=> fellow(skc6,skf10(skc7,skc6)) ),
introduced(definition,[new_symbols(definition,[sQ12_spl])],[split_symbol_definition]) ).
fof(f328,plain,
( ~ sQ12_spl
| fellow(skc6,skf10(skc7,skc6)) ),
inference(component_clause,[status(thm)],[f327]) ).
fof(f330,plain,
( ~ sQ9_spl
| sQ12_spl ),
inference(split_clause,[status(thm)],[f322,f327,f310]) ).
fof(f334,plain,
( ~ sQ12_spl
| man(skc6,skf10(skc7,skc6)) ),
inference(resolution,[status(thm)],[f328,f94]) ).
fof(f337,plain,
( ~ sQ12_spl
| male(skc6,skf10(skc7,skc6)) ),
inference(resolution,[status(thm)],[f334,f106]) ).
fof(f343,plain,
( ~ sQ12_spl
| ~ unisex(skc6,skf10(skc7,skc6)) ),
inference(resolution,[status(thm)],[f337,f144]) ).
fof(f374,plain,
( ~ sQ8_spl
| ~ sQ1_spl
| unisex(skc6,skf10(skc7,skc6)) ),
inference(paramodulation,[status(thm)],[f308,f298]) ).
fof(f384,plain,
( ~ sQ8_spl
| ~ sQ1_spl
| ~ sQ12_spl
| $false ),
inference(forward_subsumption_resolution,[status(thm)],[f374,f343]) ).
fof(f385,plain,
( ~ sQ8_spl
| ~ sQ1_spl
| ~ sQ12_spl ),
inference(contradiction_clause,[status(thm)],[f384]) ).
fof(f386,plain,
$false,
inference(sat_refutation,[status(thm)],[f199,f282,f313,f320,f330,f385]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.01 % Problem : NLP143-1 : TPTP v9.3.1. Released v2.4.0.
% 0.00/0.02 % Command : drodi -timeout(300) /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.04/0.29 % Computer : n012.cluster.edu
% 0.04/0.29 % Model : x86_64 x86_64
% 0.04/0.29 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.04/0.29 % Memory : 8046.5625MB
% 0.04/0.29 % OS : Linux 6.8.0-71-generic
% 0.04/0.29 % CPULimit : 300
% 0.04/0.29 % WCLimit : 300
% 0.04/0.29 % DateTime : Mon Sep 21 01:42:51 UTC 2026
% 0.04/0.30 % CPUTime :
% 0.04/0.30 % Drodi V4.1.1
% 0.04/0.32 % Refutation found
% 0.04/0.32 % SZS status Unsatisfiable for theBenchmark: Theory is unsatisfiable
% 0.04/0.32 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.07/0.33 % Elapsed time: 0.036358 seconds
% 0.07/0.33 % CPU time: 0.085370 seconds
% 0.07/0.33 % Total memory used: 83.496 MB
% 0.07/0.33 % Net memory used: 83.441 MB
%------------------------------------------------------------------------------