%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : GEO242+3 : TPTP v9.3.1. Released v4.0.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox2/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 : Sun Sep 27 07:17:40 AM UTC 2026
% Result : Theorem 0.13s 0.38s
% Output : CNFRefutation 0.13s
% Verified :
% SZS Type : Refutation
% Derivation depth : 6
% Number of leaves : 3
% Syntax : Number of formulae : 11 ( 4 unt; 0 def)
% Number of atoms : 26 ( 0 equ)
% Maximal formula atoms : 4 ( 2 avg)
% Number of connectives : 21 ( 6 ~; 2 |; 10 &)
% ( 1 <=>; 2 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 4 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of predicates : 6 ( 5 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 3 con; 0-2 aty)
% Number of variables : 17 ( 2 sgn 10 !; 3 ?)
% Comments :
%------------------------------------------------------------------------------
fof(a3_defns,axiom,
! [X,Y] :
( right_convergent_lines(X,Y)
<=> left_convergent_lines(X,reverse_line(Y)) ),
file('theBenchmark.p',a3_defns) ).
fof(ax11_basics,axiom,
! [L,M] :
~ ( left_convergent_lines(L,reverse_line(M))
| left_convergent_lines(L,M) ),
file('theBenchmark.p',ax11_basics) ).
fof(con,conjecture,
! [A,B,L] :
( ( right_convergent_lines(L,line_connecting(A,B))
& distinct_points(A,B)
& incident_point_and_line(A,L) )
=> right_apart_point(B,L) ),
file('theBenchmark.p',con) ).
fof(con_neg,negated_conjecture,
~ ! [A,B,L] :
( ( right_convergent_lines(L,line_connecting(A,B))
& distinct_points(A,B)
& incident_point_and_line(A,L) )
=> right_apart_point(B,L) ),
inference(assume_negation,[status(cth)],[con]) ).
cnf(c_44,plain,
( left_convergent_lines(A,reverse_line(B))
| ~ right_convergent_lines(A,B) ),
inference(clausify,[status(thm)],[a3_defns]) ).
fof(nnf_37,plain,
? [A,B,L] :
( ~ right_apart_point(B,L)
& right_convergent_lines(L,line_connecting(A,B))
& distinct_points(A,B)
& incident_point_and_line(A,L) ),
inference(fof_nnf,[status(thm)],[con_neg]) ).
fof(sk_con_neg,plain,
( ~ right_apart_point(sK2,sK0)
& right_convergent_lines(sK0,line_connecting(sK1,sK2))
& distinct_points(sK1,sK2)
& incident_point_and_line(sK1,sK0) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK1,sK0,sK2]),skolemize(A,sK1),skolemize(B,sK2),skolemize(L,sK0)],[nnf_37]) ).
cnf(c_46,negated_conjecture,
right_convergent_lines(sK0,line_connecting(sK1,sK2)),
inference(split_conjunct,[status(thm)],[sk_con_neg]) ).
cnf(c_106,negated_conjecture,
left_convergent_lines(sK0,reverse_line(line_connecting(sK1,sK2))),
inference(resolve,[status(thm)],[c_44,c_46]) ).
cnf(c_117,plain,
~ left_convergent_lines(A,B),
inference(clausify,[status(thm)],[ax11_basics]) ).
cnf(c_118,plain,
$false,
inference(resolve,[status(thm)],[c_117,c_106]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : GEO242+3 : TPTP v9.3.1. Released v4.0.0.
% 0.00/0.03 % Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.08/0.35 % Computer : n015.cluster.edu
% 0.08/0.35 % Model : x86_64 x86_64
% 0.08/0.35 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.08/0.35 % Memory : 8046.5625MB
% 0.08/0.35 % OS : Linux 6.8.0-71-generic
% 0.08/0.35 % CPULimit : 300
% 0.08/0.35 % WCLimit : 300
% 0.08/0.35 % DateTime : Fri Sep 25 13:13:12 UTC 2026
% 0.08/0.35 % CPUTime :
% 0.08/0.35 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.08/0.35 % Process 1437637 was started by sandbox2 on n015,
% 0.08/0.35 % Fri Sep 25 13:13:12 2026
% 0.08/0.35 % The command was "/export/starexec/sandbox2/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p".
% 0.08/0.36
% 0.08/0.36 % From the command line: assign(max_seconds, 300).
% 0.13/0.38
% 0.13/0.38 % SZS status Theorem for theBenchmark
% 0.13/0.38
% 0.13/0.38 % Proof 1 at 0.01 (+ 0.00) seconds.
% 0.13/0.38 % Length of proof is 8.
% 0.13/0.38 % Level of proof is 3.
% 0.13/0.38 % Maximum clause weight is 6.000.
% 0.13/0.38 % Given clauses 0.
% 0.13/0.38
% 0.13/0.38 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------