%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : GEO187+2 : TPTP v9.3.1. Released v3.3.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% Computer : n020.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 07:17:21 AM UTC 2026
% Result : Theorem 0.17s 0.50s
% Output : CNFRefutation 0.17s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 5
% Syntax : Number of formulae : 37 ( 14 unt; 0 def)
% Number of atoms : 97 ( 0 equ)
% Maximal formula atoms : 6 ( 2 avg)
% Number of connectives : 99 ( 39 ~; 36 |; 18 &)
% ( 0 <=>; 6 =>; 0 <=; 0 <~>)
% Maximal formula depth : 11 ( 4 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of predicates : 4 ( 3 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 4 con; 0-2 aty)
% Number of variables : 46 ( 0 sgn 19 !; 4 ?)
% Comments :
%------------------------------------------------------------------------------
fof(apart1,axiom,
! [X] : ~ distinct_points(X,X),
file('theBenchmark.p',apart1) ).
fof(con1,axiom,
! [X,Y,Z] :
( distinct_points(X,Y)
=> ( apart_point_and_line(Z,line_connecting(X,Y))
=> ( distinct_points(Z,Y)
& distinct_points(Z,X) ) ) ),
file('theBenchmark.p',con1) ).
fof(cu1,axiom,
! [X,Y,U,V] :
( ( distinct_lines(U,V)
& distinct_points(X,Y) )
=> ( apart_point_and_line(Y,V)
| apart_point_and_line(Y,U)
| apart_point_and_line(X,V)
| apart_point_and_line(X,U) ) ),
file('theBenchmark.p',cu1) ).
fof(ceq2,axiom,
! [X,Y,Z] :
( apart_point_and_line(X,Y)
=> ( apart_point_and_line(X,Z)
| distinct_lines(Y,Z) ) ),
file('theBenchmark.p',ceq2) ).
fof(con,conjecture,
! [X,Y,U,V] :
( ( ~ apart_point_and_line(Y,line_connecting(U,V))
& ~ apart_point_and_line(X,line_connecting(U,V))
& distinct_points(U,V)
& distinct_points(X,Y) )
=> ( ~ apart_point_and_line(V,line_connecting(X,Y))
& ~ apart_point_and_line(U,line_connecting(X,Y)) ) ),
file('theBenchmark.p',con) ).
fof(con_neg,negated_conjecture,
~ ! [X,Y,U,V] :
( ( ~ apart_point_and_line(Y,line_connecting(U,V))
& ~ apart_point_and_line(X,line_connecting(U,V))
& distinct_points(U,V)
& distinct_points(X,Y) )
=> ( ~ apart_point_and_line(V,line_connecting(X,Y))
& ~ apart_point_and_line(U,line_connecting(X,Y)) ) ),
inference(assume_negation,[status(cth)],[con]) ).
cnf(c_14,plain,
~ distinct_points(A,A),
inference(clausify,[status(thm)],[apart1]) ).
cnf(c_20,plain,
( distinct_points(C,A)
| ~ apart_point_and_line(C,line_connecting(A,B))
| ~ distinct_points(A,B) ),
inference(clausify,[status(thm)],[con1]) ).
cnf(c_21,plain,
( distinct_points(C,B)
| ~ apart_point_and_line(C,line_connecting(A,B))
| ~ distinct_points(A,B) ),
inference(clausify,[status(thm)],[con1]) ).
cnf(c_24,plain,
( apart_point_and_line(B,D)
| apart_point_and_line(B,C)
| apart_point_and_line(A,D)
| apart_point_and_line(A,C)
| ~ distinct_lines(C,D)
| ~ distinct_points(A,B) ),
inference(clausify,[status(thm)],[cu1]) ).
cnf(c_26,plain,
( apart_point_and_line(A,C)
| distinct_lines(B,C)
| ~ apart_point_and_line(A,B) ),
inference(clausify,[status(thm)],[ceq2]) ).
fof(nnf_13,plain,
? [X,Y,U,V] :
( ( apart_point_and_line(V,line_connecting(X,Y))
| apart_point_and_line(U,line_connecting(X,Y)) )
& ~ apart_point_and_line(Y,line_connecting(U,V))
& ~ apart_point_and_line(X,line_connecting(U,V))
& distinct_points(U,V)
& distinct_points(X,Y) ),
inference(fof_nnf,[status(thm)],[con_neg]) ).
fof(sk_con_neg,plain,
( ( apart_point_and_line(sK3,line_connecting(sK0,sK1))
| apart_point_and_line(sK2,line_connecting(sK0,sK1)) )
& ~ apart_point_and_line(sK1,line_connecting(sK2,sK3))
& ~ apart_point_and_line(sK0,line_connecting(sK2,sK3))
& distinct_points(sK2,sK3)
& distinct_points(sK0,sK1) ),
inference(skolemize,[status(esa),new_symbols(skolem,[sK0,sK1,sK2,sK3]),skolemize(X,sK0),skolemize(Y,sK1),skolemize(U,sK2),skolemize(V,sK3)],[nnf_13]) ).
cnf(c_28,negated_conjecture,
distinct_points(sK0,sK1),
inference(split_conjunct,[status(thm)],[sk_con_neg]) ).
cnf(c_29,negated_conjecture,
distinct_points(sK2,sK3),
inference(split_conjunct,[status(thm)],[sk_con_neg]) ).
cnf(c_30,negated_conjecture,
~ apart_point_and_line(sK0,line_connecting(sK2,sK3)),
inference(split_conjunct,[status(thm)],[sk_con_neg]) ).
cnf(c_31,negated_conjecture,
~ apart_point_and_line(sK1,line_connecting(sK2,sK3)),
inference(split_conjunct,[status(thm)],[sk_con_neg]) ).
cnf(c_32,negated_conjecture,
( apart_point_and_line(sK3,line_connecting(sK0,sK1))
| apart_point_and_line(sK2,line_connecting(sK0,sK1)) ),
inference(split_conjunct,[status(thm)],[sk_con_neg]) ).
cnf(c_85,negated_conjecture,
( distinct_points(A,sK1)
| ~ apart_point_and_line(A,line_connecting(sK0,sK1)) ),
inference(resolve,[status(thm)],[c_21,c_28]) ).
cnf(c_36,negated_conjecture,
~ apart_point_and_line(sK1,line_connecting(sK0,sK1)),
inference(resolve,[status(thm)],[c_85,c_14]) ).
cnf(c_86,negated_conjecture,
( distinct_points(A,sK0)
| ~ apart_point_and_line(A,line_connecting(sK0,sK1)) ),
inference(resolve,[status(thm)],[c_20,c_28]) ).
cnf(c_37,negated_conjecture,
~ apart_point_and_line(sK0,line_connecting(sK0,sK1)),
inference(resolve,[status(thm)],[c_86,c_14]) ).
cnf(c_87,negated_conjecture,
( distinct_points(A,sK3)
| ~ apart_point_and_line(A,line_connecting(sK2,sK3)) ),
inference(resolve,[status(thm)],[c_21,c_29]) ).
cnf(c_41,negated_conjecture,
~ apart_point_and_line(sK3,line_connecting(sK2,sK3)),
inference(resolve,[status(thm)],[c_87,c_14]) ).
cnf(c_88,negated_conjecture,
( distinct_points(A,sK2)
| ~ apart_point_and_line(A,line_connecting(sK2,sK3)) ),
inference(resolve,[status(thm)],[c_20,c_29]) ).
cnf(c_42,negated_conjecture,
~ apart_point_and_line(sK2,line_connecting(sK2,sK3)),
inference(resolve,[status(thm)],[c_88,c_14]) ).
cnf(c_43,plain,
( apart_point_and_line(sK3,A)
| distinct_lines(line_connecting(sK0,sK1),A)
| apart_point_and_line(sK2,line_connecting(sK0,sK1)) ),
inference(resolve,[status(thm)],[c_32,c_26]) ).
cnf(c_89,negated_conjecture,
( apart_point_and_line(sK1,B)
| apart_point_and_line(sK1,A)
| apart_point_and_line(sK0,B)
| apart_point_and_line(sK0,A)
| ~ distinct_lines(A,B) ),
inference(resolve,[status(thm)],[c_24,c_28]) ).
cnf(c_90,negated_conjecture,
( apart_point_and_line(sK1,A)
| apart_point_and_line(sK1,line_connecting(sK0,sK1))
| apart_point_and_line(sK0,A)
| ~ distinct_lines(line_connecting(sK0,sK1),A) ),
inference(resolve,[status(thm)],[c_89,c_37]) ).
cnf(c_91,negated_conjecture,
( apart_point_and_line(sK1,line_connecting(sK2,sK3))
| apart_point_and_line(sK1,line_connecting(sK0,sK1))
| ~ distinct_lines(line_connecting(sK0,sK1),line_connecting(sK2,sK3)) ),
inference(resolve,[status(thm)],[c_90,c_30]) ).
cnf(c_92,negated_conjecture,
( apart_point_and_line(sK1,line_connecting(sK2,sK3))
| ~ distinct_lines(line_connecting(sK0,sK1),line_connecting(sK2,sK3)) ),
inference(resolve,[status(thm)],[c_91,c_36]) ).
cnf(c_48,negated_conjecture,
~ distinct_lines(line_connecting(sK0,sK1),line_connecting(sK2,sK3)),
inference(resolve,[status(thm)],[c_92,c_31]) ).
cnf(c_93,plain,
( apart_point_and_line(sK3,line_connecting(sK2,sK3))
| apart_point_and_line(sK2,line_connecting(sK0,sK1)) ),
inference(resolve,[status(thm)],[c_48,c_43]) ).
cnf(c_82,plain,
apart_point_and_line(sK2,line_connecting(sK0,sK1)),
inference(resolve,[status(thm)],[c_41,c_93]) ).
cnf(c_94,plain,
( apart_point_and_line(A,line_connecting(sK2,sK3))
| ~ apart_point_and_line(A,line_connecting(sK0,sK1)) ),
inference(resolve,[status(thm)],[c_26,c_48]) ).
cnf(c_95,plain,
~ apart_point_and_line(sK2,line_connecting(sK0,sK1)),
inference(resolve,[status(thm)],[c_94,c_42]) ).
cnf(c_84,plain,
$false,
inference(resolve,[status(thm)],[c_82,c_95]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.05 % Problem : GEO187+2 : TPTP v9.3.1. Released v3.3.0.
% 0.00/0.07 % Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.17/0.44 % Computer : n020.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
% 0.17/0.45 % CPULimit : 300
% 0.17/0.45 % WCLimit : 300
% 0.17/0.45 % DateTime : Fri Sep 25 13:04:19 UTC 2026
% 0.17/0.45 % CPUTime :
% 0.17/0.45 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.17/0.45 % Process 2980744 was started by sandbox2 on n020,
% 0.17/0.45 % Fri Sep 25 13:04:19 2026
% 0.17/0.45 % The command was "/export/starexec/sandbox2/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p".
% 0.17/0.47
% 0.17/0.47 % From the command line: assign(max_seconds, 300).
% 0.17/0.50
% 0.17/0.50 % SZS status Theorem for theBenchmark
% 0.17/0.50
% 0.17/0.50 % Proof 1 at 0.01 (+ 0.01) seconds.
% 0.17/0.50 % Length of proof is 23.
% 0.17/0.50 % Level of proof is 5.
% 0.17/0.50 % Maximum clause weight is 18.000.
% 0.17/0.50 % Given clauses 40.
% 0.17/0.50
% 0.17/0.50 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------