%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : GEO247+1 : TPTP v9.3.1. Bugfixed v6.4.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n018.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 : Sun Sep 27 07:17:41 AM UTC 2026
% Result : Theorem 0.17s 0.47s
% Output : CNFRefutation 0.17s
% Verified :
% SZS Type : Refutation
% Derivation depth : 5
% Number of leaves : 2
% Syntax : Number of formulae : 8 ( 3 unt; 0 def)
% Number of atoms : 41 ( 0 equ)
% Maximal formula atoms : 9 ( 5 avg)
% Number of connectives : 38 ( 5 ~; 1 |; 30 &)
% ( 0 <=>; 2 =>; 0 <=; 0 <~>)
% Maximal formula depth : 16 ( 8 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 7 ( 7 usr; 6 con; 0-1 aty)
% Number of variables : 22 ( 2 sgn 14 !; 6 ?)
% Comments :
%------------------------------------------------------------------------------
fof(oag10,axiom,
! [A,L] :
~ ( left_apart_point(A,reverse_line(L))
| left_apart_point(A,L) ),
file('theBenchmark.p',oag10) ).
fof(con,conjecture,
! [A,B,C,D,L,M] :
( ( left_apart_point(D,M)
& left_apart_point(D,reverse_line(L))
& left_apart_point(C,reverse_line(M))
& left_apart_point(C,L)
& left_apart_point(B,reverse_line(M))
& left_apart_point(B,reverse_line(L))
& left_apart_point(A,M)
& left_apart_point(A,L) )
=> convergent_lines(L,M) ),
file('theBenchmark.p',con) ).
fof(con_neg,negated_conjecture,
~ ! [A,B,C,D,L,M] :
( ( left_apart_point(D,M)
& left_apart_point(D,reverse_line(L))
& left_apart_point(C,reverse_line(M))
& left_apart_point(C,L)
& left_apart_point(B,reverse_line(M))
& left_apart_point(B,reverse_line(L))
& left_apart_point(A,M)
& left_apart_point(A,L) )
=> convergent_lines(L,M) ),
inference(assume_negation,[status(cth)],[con]) ).
fof(nnf_32,plain,
? [A,B,C,D,L,M] :
( ~ convergent_lines(L,M)
& left_apart_point(D,M)
& left_apart_point(D,reverse_line(L))
& left_apart_point(C,reverse_line(M))
& left_apart_point(C,L)
& left_apart_point(B,reverse_line(M))
& left_apart_point(B,reverse_line(L))
& left_apart_point(A,M)
& left_apart_point(A,L) ),
inference(fof_nnf,[status(thm)],[con_neg]) ).
fof(sk_con_neg,plain,
( ~ convergent_lines(sK1,sK3)
& left_apart_point(sK5,sK3)
& left_apart_point(sK5,reverse_line(sK1))
& left_apart_point(sK4,reverse_line(sK3))
& left_apart_point(sK4,sK1)
& left_apart_point(sK0,reverse_line(sK3))
& left_apart_point(sK0,reverse_line(sK1))
& left_apart_point(sK2,sK3)
& left_apart_point(sK2,sK1) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK2,sK1,sK3,sK0,sK4,sK5]),skolemize(A,sK2),skolemize(B,sK0),skolemize(C,sK4),skolemize(D,sK5),skolemize(L,sK1),skolemize(M,sK3)],[nnf_32]) ).
cnf(c_79,negated_conjecture,
left_apart_point(sK0,reverse_line(sK1)),
inference(split_conjunct,[status(thm)],[sk_con_neg]) ).
cnf(c_96,plain,
~ left_apart_point(A,reverse_line(B)),
inference(clausify,[status(thm)],[oag10]) ).
cnf(c_97,plain,
$false,
inference(resolve,[status(thm)],[c_96,c_79]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : GEO247+1 : TPTP v9.3.1. Bugfixed v6.4.0.
% 0.00/0.06 % Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.17/0.44 % Computer : n018.cluster.edu
% 0.17/0.44 % Model : x86_64 x86_64
% 0.17/0.44 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.17/0.44 % Memory : 8046.5625MB
% 0.17/0.44 % OS : Linux 6.8.0-71-generic
% 0.17/0.44 % CPULimit : 300
% 0.17/0.44 % WCLimit : 300
% 0.17/0.44 % DateTime : Fri Sep 25 13:12:20 UTC 2026
% 0.17/0.44 % CPUTime :
% 0.17/0.44 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.17/0.44 % Process 2033114 was started by sandbox2 on n018,
% 0.17/0.44 % Fri Sep 25 13:12:20 2026
% 0.17/0.44 % The command was "/export/starexec/sandbox2/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p".
% 0.17/0.45
% 0.17/0.45 % From the command line: assign(max_seconds, 300).
% 0.17/0.47
% 0.17/0.47 % SZS status Theorem for theBenchmark
% 0.17/0.47
% 0.17/0.47 % Proof 1 at 0.01 (+ 0.00) seconds.
% 0.17/0.47 % Length of proof is 5.
% 0.17/0.47 % Level of proof is 2.
% 0.17/0.47 % Maximum clause weight is 4.000.
% 0.17/0.47 % Given clauses 0.
% 0.17/0.47
% 0.17/0.47 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------