%------------------------------------------------------------------------------
% File : Drodi---4.1.1
% Problem : GEO212+1 : TPTP v9.3.1. Released v3.3.0.
% Transfm : none
% Format : tptp:raw
% Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% Computer : n010.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 12:24:32 PM UTC 2026
% Result : Theorem 0.09s 0.40s
% Output : CNFRefutation 0.09s
% Verified :
% SZS Type : Refutation
% Derivation depth : 12
% Number of leaves : 10
% Syntax : Number of formulae : 51 ( 9 unt; 5 def)
% Number of atoms : 137 ( 0 equ)
% Maximal formula atoms : 6 ( 2 avg)
% Number of connectives : 130 ( 44 ~; 59 |; 18 &)
% ( 5 <=>; 4 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Maximal term depth : 1 ( 1 avg)
% Number of predicates : 8 ( 7 usr; 5 prp; 0-2 aty)
% Number of functors : 3 ( 3 usr; 3 con; 0-0 aty)
% Number of variables : 67 ( 61 !; 6 ?)
% Comments :
%------------------------------------------------------------------------------
fof(f3,axiom,
! [X] : ~ convergent_lines(X,X),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f6,axiom,
! [X,Y,Z] :
( convergent_lines(X,Y)
=> ( convergent_lines(Y,Z)
| convergent_lines(X,Z) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f18,axiom,
! [L,M] :
( unorthogonal_lines(L,M)
| convergent_lines(L,M) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f19,axiom,
! [L,M,N] :
( ( unorthogonal_lines(L,M)
& convergent_lines(L,M) )
=> ( ( unorthogonal_lines(M,N)
& convergent_lines(M,N) )
| ( unorthogonal_lines(L,N)
& convergent_lines(L,N) ) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f23,conjecture,
! [L,M,N] :
( unorthogonal_lines(L,M)
=> ( unorthogonal_lines(M,N)
| convergent_lines(L,N) ) ),
file('/export/starexec/sandbox/benchmark/theBenchmark.p') ).
fof(f24,negated_conjecture,
~ ! [L,M,N] :
( unorthogonal_lines(L,M)
=> ( unorthogonal_lines(M,N)
| convergent_lines(L,N) ) ),
inference(negated_conjecture,[status(cth)],[f23]) ).
fof(f27,plain,
! [X0] : ~ convergent_lines(X0,X0),
inference(cnf_transformation,[status(thm)],[f3]) ).
fof(f34,plain,
! [X,Y,Z] :
( convergent_lines(Y,Z)
| convergent_lines(X,Z)
| ~ convergent_lines(X,Y) ),
inference(pre_NNF_transformation,[status(thm)],[f6]) ).
fof(f35,plain,
! [X,Y] :
( ! [Z] :
( convergent_lines(Y,Z)
| convergent_lines(X,Z) )
| ~ convergent_lines(X,Y) ),
inference(miniscoping,[status(thm)],[f34]) ).
fof(f36,plain,
! [X0,X1,X2] :
( convergent_lines(X1,X2)
| convergent_lines(X0,X2)
| ~ convergent_lines(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f35]) ).
fof(f61,plain,
! [X0,X1] :
( unorthogonal_lines(X0,X1)
| convergent_lines(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f18]) ).
fof(f62,plain,
! [L,M,N] :
( ( unorthogonal_lines(M,N)
& convergent_lines(M,N) )
| ( unorthogonal_lines(L,N)
& convergent_lines(L,N) )
| ~ unorthogonal_lines(L,M)
| ~ convergent_lines(L,M) ),
inference(pre_NNF_transformation,[status(thm)],[f19]) ).
fof(f63,definition,
! [L,N] :
( sP0_prd(N,L)
<=> ( unorthogonal_lines(L,N)
& convergent_lines(L,N) ) ),
introduced(definition,[new_symbols(definition,[sP0_prd])],[]) ).
fof(f64,plain,
! [L,M,N] :
( ( unorthogonal_lines(M,N)
& convergent_lines(M,N) )
| sP0_prd(N,L)
| ~ unorthogonal_lines(L,M)
| ~ convergent_lines(L,M) ),
inference(formula_renaming,[status(thm)],[f62,f63]) ).
fof(f65,plain,
! [L,M] :
( ! [N] :
( ( unorthogonal_lines(M,N)
& convergent_lines(M,N) )
| sP0_prd(N,L) )
| ~ unorthogonal_lines(L,M)
| ~ convergent_lines(L,M) ),
inference(miniscoping,[status(thm)],[f64]) ).
fof(f67,plain,
! [X0,X1,X2] :
( unorthogonal_lines(X1,X2)
| sP0_prd(X2,X0)
| ~ unorthogonal_lines(X0,X1)
| ~ convergent_lines(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f65]) ).
fof(f73,plain,
? [L,M,N] :
( ~ unorthogonal_lines(M,N)
& ~ convergent_lines(L,N)
& unorthogonal_lines(L,M) ),
inference(pre_NNF_transformation,[status(thm)],[f24]) ).
fof(f74,plain,
? [L,M] :
( ? [N] :
( ~ unorthogonal_lines(M,N)
& ~ convergent_lines(L,N) )
& unorthogonal_lines(L,M) ),
inference(miniscoping,[status(thm)],[f73]) ).
fof(f75,plain,
( ~ unorthogonal_lines(sK1_skl,sK2_skl)
& ~ convergent_lines(sK0_skl,sK2_skl)
& unorthogonal_lines(sK0_skl,sK1_skl) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0_skl,sK1_skl,sK2_skl]),skolemize(L,sK0_skl),skolemize(M,sK1_skl),skolemize(N,sK2_skl)],[f74]) ).
fof(f76,plain,
unorthogonal_lines(sK0_skl,sK1_skl),
inference(cnf_transformation,[status(thm)],[f75]) ).
fof(f77,plain,
~ convergent_lines(sK0_skl,sK2_skl),
inference(cnf_transformation,[status(thm)],[f75]) ).
fof(f78,plain,
~ unorthogonal_lines(sK1_skl,sK2_skl),
inference(cnf_transformation,[status(thm)],[f75]) ).
fof(f79,plain,
! [L,N] :
( ( ~ unorthogonal_lines(L,N)
| ~ convergent_lines(L,N)
| sP0_prd(N,L) )
& ( ( unorthogonal_lines(L,N)
& convergent_lines(L,N) )
| ~ sP0_prd(N,L) ) ),
inference(NNF_transformation,[status(thm)],[f63]) ).
fof(f80,plain,
( ! [L,N] :
( ~ unorthogonal_lines(L,N)
| ~ convergent_lines(L,N)
| sP0_prd(N,L) )
& ! [L,N] :
( ( unorthogonal_lines(L,N)
& convergent_lines(L,N) )
| ~ sP0_prd(N,L) ) ),
inference(miniscoping,[status(thm)],[f79]) ).
fof(f81,plain,
! [X0,X1] :
( convergent_lines(X1,X0)
| ~ sP0_prd(X0,X1) ),
inference(cnf_transformation,[status(thm)],[f80]) ).
fof(f84,plain,
convergent_lines(sK1_skl,sK2_skl),
inference(resolution,[status(thm)],[f61,f78]) ).
fof(f85,plain,
! [X0] :
( convergent_lines(sK2_skl,X0)
| convergent_lines(sK1_skl,X0) ),
inference(resolution,[status(thm)],[f36,f84]) ).
fof(f86,plain,
! [X0,X1] :
( convergent_lines(X0,X1)
| convergent_lines(sK2_skl,X1)
| convergent_lines(sK1_skl,X0) ),
inference(resolution,[status(thm)],[f85,f36]) ).
fof(f89,plain,
! [X0,X1,X2] :
( convergent_lines(X1,X2)
| convergent_lines(sK1_skl,X2)
| convergent_lines(X1,X0)
| convergent_lines(sK2_skl,X0) ),
inference(resolution,[status(thm)],[f86,f36]) ).
fof(f116,definition,
( sQ5_spl
<=> convergent_lines(sK2_skl,sK2_skl) ),
introduced(definition,[new_symbols(definition,[sQ5_spl])],[split_symbol_definition]) ).
fof(f117,plain,
( ~ sQ5_spl
| convergent_lines(sK2_skl,sK2_skl) ),
inference(component_clause,[status(thm)],[f116]) ).
fof(f126,plain,
! [X0] :
( convergent_lines(sK0_skl,X0)
| convergent_lines(sK1_skl,X0)
| convergent_lines(sK2_skl,sK2_skl) ),
inference(resolution,[status(thm)],[f89,f77]) ).
fof(f139,definition,
! [X0] :
( sQ6_spl
<=> ( convergent_lines(sK0_skl,X0)
| convergent_lines(sK1_skl,X0) ) ),
introduced(definition,[new_symbols(definition,[sQ6_spl])],[split_symbol_definition]) ).
fof(f140,plain,
! [X0] :
( ~ sQ6_spl
| convergent_lines(sK0_skl,X0)
| convergent_lines(sK1_skl,X0) ),
inference(component_clause,[status(thm)],[f139]) ).
fof(f142,plain,
( sQ6_spl
| sQ5_spl ),
inference(split_clause,[status(thm)],[f126,f116,f139]) ).
fof(f154,plain,
( ~ sQ5_spl
| $false ),
inference(forward_subsumption_resolution,[status(thm)],[f117,f27]) ).
fof(f155,plain,
~ sQ5_spl,
inference(contradiction_clause,[status(thm)],[f154]) ).
fof(f215,plain,
( ~ sQ6_spl
| convergent_lines(sK0_skl,sK1_skl) ),
inference(resolution,[status(thm)],[f140,f27]) ).
fof(f305,definition,
( sQ17_spl
<=> convergent_lines(sK0_skl,sK1_skl) ),
introduced(definition,[new_symbols(definition,[sQ17_spl])],[split_symbol_definition]) ).
fof(f307,plain,
( sQ17_spl
| ~ convergent_lines(sK0_skl,sK1_skl) ),
inference(component_clause,[status(thm)],[f305]) ).
fof(f351,plain,
( sQ17_spl
| ~ sQ6_spl
| $false ),
inference(forward_subsumption_resolution,[status(thm)],[f307,f215]) ).
fof(f352,plain,
( sQ17_spl
| ~ sQ6_spl ),
inference(contradiction_clause,[status(thm)],[f351]) ).
fof(f353,plain,
! [X0] :
( unorthogonal_lines(sK1_skl,X0)
| sP0_prd(X0,sK0_skl)
| ~ convergent_lines(sK0_skl,sK1_skl) ),
inference(resolution,[status(thm)],[f67,f76]) ).
fof(f355,definition,
! [X0] :
( sQ20_spl
<=> ( unorthogonal_lines(sK1_skl,X0)
| sP0_prd(X0,sK0_skl) ) ),
introduced(definition,[new_symbols(definition,[sQ20_spl])],[split_symbol_definition]) ).
fof(f356,plain,
! [X0] :
( ~ sQ20_spl
| unorthogonal_lines(sK1_skl,X0)
| sP0_prd(X0,sK0_skl) ),
inference(component_clause,[status(thm)],[f355]) ).
fof(f358,plain,
( sQ20_spl
| ~ sQ17_spl ),
inference(split_clause,[status(thm)],[f353,f305,f355]) ).
fof(f383,plain,
( ~ sQ20_spl
| sP0_prd(sK2_skl,sK0_skl) ),
inference(resolution,[status(thm)],[f356,f78]) ).
fof(f399,plain,
( ~ sQ20_spl
| convergent_lines(sK0_skl,sK2_skl) ),
inference(resolution,[status(thm)],[f383,f81]) ).
fof(f400,plain,
( ~ sQ20_spl
| $false ),
inference(forward_subsumption_resolution,[status(thm)],[f399,f77]) ).
fof(f401,plain,
~ sQ20_spl,
inference(contradiction_clause,[status(thm)],[f400]) ).
fof(f402,plain,
$false,
inference(sat_refutation,[status(thm)],[f142,f155,f352,f358,f401]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : GEO212+1 : TPTP v9.3.1. Released v3.3.0.
% 0.00/0.04 % Command : drodi -timeout(300) /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.09/0.36 % Computer : n010.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 13:28:40 UTC 2026
% 0.09/0.37 % CPUTime :
% 0.09/0.38 % Drodi V4.1.1
% 0.09/0.40 % Refutation found
% 0.09/0.40 % SZS status Theorem for theBenchmark: Theorem is valid
% 0.09/0.40 % SZS output start CNFRefutation for theBenchmark
% See solution above
% 0.09/0.43 % Elapsed time: 0.055047 seconds
% 0.09/0.43 % CPU time: 0.142083 seconds
% 0.09/0.43 % Total memory used: 17.778 MB
% 0.09/0.43 % Net memory used: 17.492 MB
%------------------------------------------------------------------------------