%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : SET062-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 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 : Fri Sep 25 02:46:19 PM UTC 2026
% Result : Unsatisfiable 4.22s 6.34s
% Output : CNFRefutation 4.22s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 3
% Syntax : Number of formulae : 9 ( 7 unt; 0 def)
% Number of atoms : 11 ( 0 equ)
% Maximal formula atoms : 2 ( 1 avg)
% Number of connectives : 7 ( 5 ~; 2 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 4 ( 3 avg)
% Maximal term depth : 2 ( 1 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 3 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 3 ( 3 usr; 2 con; 0-2 aty)
% Number of variables : 7 ( 0 sgn 7 !; 0 ?; 4 :)
% Comments :
%------------------------------------------------------------------------------
fof(f2,axiom,
! [X0,X1] :
( subclass(X0,X1)
| member(not_subclass_element(X0,X1),X0) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',not_subclass_members1) ).
fof(f113,axiom,
! [X0] : ~ member(X0,null_class),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',existence_of_null_class) ).
fof(f114,negated_conjecture,
~ subclass(null_class,x),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_null_class_is_subclass_1) ).
tcf(c_154,plain,
! [X0: $i,X1: $i] :
( subclass(X0,X1)
| member(not_subclass_element(X0,X1),X0) ),
inference(cnf_transformation,[],[f2]) ).
tcf(c_239,plain,
! [X0: $i] : ~ member(X0,null_class),
inference(cnf_transformation,[],[f113]) ).
tcf(c_240,negated_conjecture,
~ subclass(null_class,x),
inference(cnf_transformation,[],[f114]) ).
tcf(c_2858,negated_conjecture,
~ subclass(null_class,x),
inference(demodulation,[status(thm)],[c_240]) ).
tcf(c_3706,plain,
! [X0: $i] : subclass(null_class,X0),
inference(superposition,[status(thm)],[c_154,c_239]) ).
tcf(c_3707,plain,
$false,
inference(backward_subsumption_resolution,[status(thm)],[c_2858,c_3706]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET062-7 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.12/5.40 % Computer : n015.cluster.edu
% 0.12/5.40 % Model : x86_64 x86_64
% 0.12/5.40 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/5.40 % Memory : 8046.5625MB
% 0.12/5.40 % OS : Linux 6.8.0-71-generic
% 0.12/5.40 % CPULimit : 300
% 0.12/5.40 % WCLimit : 300
% 0.12/5.40 % DateTime : Thu Sep 24 09:34:16 UTC 2026
% 0.16/5.40 % CPUTime :
% 0.16/5.40 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.16/5.44 Running first-order theorem proving
% 0.16/5.44 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.16/5.45
% 0.16/5.45 % ======== iProver multi-core TPTP/SMT =========
% 0.16/5.45
% 0.16/5.45 % Detected problem language: tptp
% 0.16/5.47 % Proving...
% 4.22/6.34 % SZS status Started for theBenchmark.p
% 4.22/6.34 % SZS status Unsatisfiable for theBenchmark.p
% 4.22/6.34
% 4.22/6.34 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 4.22/6.34
% 4.22/6.34 % ------ iProver source info
% 4.22/6.34
% 4.22/6.34 % git: date: 2026-07-19 20:42:38 +0200
% 4.22/6.34 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 4.22/6.34 % git: non_committed_changes: false
% 4.22/6.34
% 4.22/6.34 % ------ Parsing...% successful
% 4.22/6.34
% 4.22/6.34
% 4.22/6.34 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 4.22/6.34
% 4.22/6.34 % ------ Preprocessing... sup_sim: 0 sf_s rm: 1 0s sf_e pe_s pe:1:0s pe:2:0s pe_e sup_sim: 0 sf_s rm: 2 0s sf_e pe_s pe_e %
% 4.22/6.34
% 4.22/6.34 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 4.22/6.34
% 4.22/6.34 % ------ Preprocessing... sf_s rm: 1 0s sf_e sf_s rm: 0 0s sf_e
% 4.22/6.34 % ------ Proving...
% 4.22/6.34 % ------ Problem Properties
% 4.22/6.34
% 4.22/6.34 %
% 4.22/6.34 % clauses 78
% 4.22/6.34 % conjectures 1
% 4.22/6.34 % EPR 15
% 4.22/6.34 % Horn 68
% 4.22/6.34 % unary 18
% 4.22/6.34 % binary 36
% 4.22/6.34 % lits 168
% 4.22/6.34 % lits eq 23
% 4.22/6.34 % fd_pure 0
% 4.22/6.34 % fd_pseudo 0
% 4.22/6.34 % fd_cond 3
% 4.22/6.34 % fd_pseudo_cond 6
% 4.22/6.34 % AC symbols 0
% 4.22/6.34
% 4.22/6.34 % ------ Schedule dynamic 5 is on
% 4.22/6.34
% 4.22/6.34 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 4.22/6.34
% 4.22/6.34
% 4.22/6.34 % ------
% 4.22/6.34 % Current options:
% 4.22/6.34 % ------
% 4.22/6.34
% 4.22/6.34
% 4.22/6.34 %
% 4.22/6.34
% 4.22/6.34 % ------ Proving...
% 4.22/6.34 %
% 4.22/6.34
% 4.22/6.34 % SZS status Unsatisfiable for theBenchmark.p
% 4.22/6.34
% 4.22/6.34 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 4.22/6.34
% 4.22/6.34
%------------------------------------------------------------------------------