%------------------------------------------------------------------------------
% File : Prover9---2026-6A
% Problem : SET849-2 : TPTP v9.3.1. Released v3.2.0.
% Transfm : none
% Format : tptp:raw
% Command : prover9 -casc 300 -f /export/starexec/sandbox2/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 : Sun Sep 27 08:37:08 AM UTC 2026
% Result : Unsatisfiable 0.15s 0.80s
% Output : CNFRefutation 0.15s
% Verified :
% SZS Type : Refutation
% Derivation depth : 4
% Number of leaves : 4
% Syntax : Number of formulae : 12 ( 7 unt; 0 def)
% Number of atoms : 17 ( 5 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 13 ( 8 ~; 5 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 3 avg)
% Maximal term depth : 4 ( 2 avg)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-3 aty)
% Number of functors : 6 ( 6 usr; 2 con; 0-3 aty)
% Number of variables : 18 ( 1 sgn 7 !; 0 ?)
% Comments :
%------------------------------------------------------------------------------
fof(cls_Set_Osubset__refl_0,axiom,
! [VAR_0,VAR_1] : c_lessequals(VAR_0,VAR_0,tc_set(VAR_1)),
file('theBenchmark.p',cls_Set_Osubset__refl_0) ).
cnf(c_1,plain,
c_lessequals(A,A,tc_set(B)),
inference(clausify,[status(thm)],[cls_Set_Osubset__refl_0]) ).
fof(cls_Zorn_OTFin__UnionI_0,axiom,
! [VAR_0,VAR_1,VAR_2] :
( c_in(c_Union(VAR_0,tc_set(VAR_2)),c_Zorn_OTFin(VAR_1,VAR_2),tc_set(tc_set(VAR_2)))
| ~ c_lessequals(VAR_0,c_Zorn_OTFin(VAR_1,VAR_2),tc_set(tc_set(tc_set(VAR_2)))) ),
file('theBenchmark.p',cls_Zorn_OTFin__UnionI_0) ).
cnf(c_2,plain,
( c_in(c_Union(A,tc_set(C)),c_Zorn_OTFin(B,C),tc_set(tc_set(C)))
| ~ c_lessequals(A,c_Zorn_OTFin(B,C),tc_set(tc_set(tc_set(C)))) ),
inference(clausify,[status(thm)],[cls_Zorn_OTFin__UnionI_0]) ).
fof(cls_Zorn_Oequal__succ__Union_1,axiom,
! [VAR_0,VAR_1] :
( c_Union(c_Zorn_OTFin(VAR_0,VAR_1),tc_set(VAR_1)) = c_Zorn_Osucc(VAR_0,c_Union(c_Zorn_OTFin(VAR_0,VAR_1),tc_set(VAR_1)),VAR_1)
| ~ c_in(c_Union(c_Zorn_OTFin(VAR_0,VAR_1),tc_set(VAR_1)),c_Zorn_OTFin(VAR_0,VAR_1),tc_set(tc_set(VAR_1))) ),
file('theBenchmark.p',cls_Zorn_Oequal__succ__Union_1) ).
cnf(c_3,plain,
( c_Union(c_Zorn_OTFin(A,B),tc_set(B)) = c_Zorn_Osucc(A,c_Union(c_Zorn_OTFin(A,B),tc_set(B)),B)
| ~ c_in(c_Union(c_Zorn_OTFin(A,B),tc_set(B)),c_Zorn_OTFin(A,B),tc_set(tc_set(B))) ),
inference(clausify,[status(thm)],[cls_Zorn_Oequal__succ__Union_1]) ).
cnf(c_4,plain,
( c_Zorn_Osucc(A,c_Union(c_Zorn_OTFin(A,B),tc_set(B)),B) = c_Union(c_Zorn_OTFin(A,B),tc_set(B))
| ~ c_in(c_Union(c_Zorn_OTFin(A,B),tc_set(B)),c_Zorn_OTFin(A,B),tc_set(tc_set(B))) ),
inference(copy,[status(thm)],[c_3]) ).
fof(cls_conjecture_1,axiom,
c_Zorn_Osucc(v_S,c_Union(c_Zorn_OTFin(v_S,t_a),tc_set(t_a)),t_a) != c_Union(c_Zorn_OTFin(v_S,t_a),tc_set(t_a)),
file('theBenchmark.p',cls_conjecture_1) ).
cnf(c_5,plain,
c_Zorn_Osucc(v_S,c_Union(c_Zorn_OTFin(v_S,t_a),tc_set(t_a)),t_a) != c_Union(c_Zorn_OTFin(v_S,t_a),tc_set(t_a)),
inference(clausify,[status(thm)],[cls_conjecture_1]) ).
cnf(c_6,plain,
c_in(c_Union(c_Zorn_OTFin(A,B),tc_set(B)),c_Zorn_OTFin(A,B),tc_set(tc_set(B))),
inference(resolve,[status(thm)],[c_2,c_1]) ).
cnf(c_7,plain,
~ c_in(c_Union(c_Zorn_OTFin(v_S,t_a),tc_set(t_a)),c_Zorn_OTFin(v_S,t_a),tc_set(tc_set(t_a))),
inference(resolve,[status(thm)],[c_4,c_5]) ).
cnf(c_8,plain,
$false,
inference(resolve,[status(thm)],[c_7,c_6]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET849-2 : TPTP v9.3.1. Released v3.2.0.
% 0.00/0.04 % Command : prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.12/0.78 % Computer : n010.cluster.edu
% 0.12/0.78 % Model : x86_64 x86_64
% 0.12/0.78 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.78 % Memory : 8046.5625MB
% 0.12/0.78 % OS : Linux 6.8.0-71-generic
% 0.12/0.78 % CPULimit : 300
% 0.12/0.78 % WCLimit : 300
% 0.12/0.78 % DateTime : Sat Sep 26 08:21:48 UTC 2026
% 0.12/0.79 % CPUTime :
% 0.12/0.79 % Prover9 (64) version 2026-6A, July 2026, CASC-J13.
% 0.12/0.79 % Process 2892583 was started by sandbox2 on n010,
% 0.12/0.79 % Sat Sep 26 08:21:48 2026
% 0.12/0.79 % The command was "/export/starexec/sandbox2/solver/bin/prover9 -casc 300 -f /export/starexec/sandbox2/benchmark/theBenchmark.p".
% 0.12/0.79
% 0.12/0.79 % From the command line: assign(max_seconds, 300).
% 0.15/0.80
% 0.15/0.80 % SZS status Unsatisfiable for theBenchmark
% 0.15/0.80
% 0.15/0.80 % Proof 1 at 0.00 (+ 0.00) seconds.
% 0.15/0.80 % Length of proof is 8.
% 0.15/0.80 % Level of proof is 3.
% 0.15/0.80 % Maximum clause weight is 29.000.
% 0.15/0.80 % Given clauses 4.
% 0.15/0.80
% 0.15/0.80 % SZS output start CNFRefutation for theBenchmark
% See solution above
%------------------------------------------------------------------------------