%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : SET063-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% Computer : n012.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 02:46:20 PM UTC 2026
% Result : Unsatisfiable 3.65s 1.08s
% Output : CNFRefutation 3.65s
% Verified :
% SZS Type : Refutation
% Derivation depth : 10
% Number of leaves : 7
% Syntax : Number of formulae : 28 ( 11 unt; 0 def)
% Number of atoms : 48 ( 18 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 38 ( 18 ~; 20 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 3 avg)
% Maximal term depth : 3 ( 1 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 4 ( 2 usr; 1 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 2 con; 0-2 aty)
% Number of variables : 28 ( 0 sgn 28 !; 0 ?; 16 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X2,X0,X1] :
( member(X2,X1)
| ~ member(X2,X0)
| ~ subclass(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',subclass_members) ).
fof(f21,axiom,
! [X2,X0,X1] :
( member(X0,X1)
| ~ member(X0,intersection(X1,X2)) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',intersection1) ).
fof(f24,axiom,
! [X0,X1] :
( ~ member(X0,X1)
| ~ member(X0,complement(X1)) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',complement1) ).
fof(f67,axiom,
! [X0] :
( member(regular(X0),X0)
| X0 = null_class ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',regularity1) ).
fof(f68,plain,
! [X0] :
( member(regular(X0),X0)
| null_class = X0 ),
inference(reorient_equations,[],[f67]) ).
fof(f69,axiom,
! [X0] :
( intersection(X0,regular(X0)) = null_class
| X0 = null_class ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',regularity2) ).
fof(f70,plain,
! [X0] :
( null_class = intersection(X0,regular(X0))
| null_class = X0 ),
inference(reorient_equations,[],[f69]) ).
fof(f101,negated_conjecture,
subclass(x,null_class),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_corollary_of_null_class_is_subclass_1) ).
fof(f102,negated_conjecture,
x != null_class,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_corollary_of_null_class_is_subclass_2) ).
fof(f103,plain,
null_class != x,
inference(reorient_equations,[],[f102]) ).
tcf(c_142,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X2,X1)
| ~ member(X2,X0)
| ~ subclass(X0,X1) ),
inference(cnf_transformation,[],[f1]) ).
tcf(c_160,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,X1)
| ~ member(X0,intersection(X1,X2)) ),
inference(cnf_transformation,[],[f21]) ).
tcf(c_163,plain,
! [X0: $i,X1: $i] :
( ~ member(X0,X1)
| ~ member(X0,complement(X1)) ),
inference(cnf_transformation,[],[f24]) ).
tcf(c_194,plain,
! [X0: $i] :
( member(regular(X0),X0)
| ( X0 = null_class ) ),
inference(cnf_transformation,[],[f68]) ).
tcf(c_195,plain,
! [X0: $i] :
( ( X0 = null_class )
| ( intersection(X0,regular(X0)) = null_class ) ),
inference(cnf_transformation,[],[f70]) ).
tcf(c_217,negated_conjecture,
subclass(x,null_class),
inference(cnf_transformation,[],[f101]) ).
tcf(c_218,negated_conjecture,
x != null_class,
inference(cnf_transformation,[],[f103]) ).
tcf(c_2645,negated_conjecture,
x != null_class,
inference(demodulation,[status(thm)],[c_218]) ).
tcf(c_2646,negated_conjecture,
subclass(x,null_class),
inference(demodulation,[status(thm)],[c_217]) ).
tcf(c_3446,plain,
! [X0: $i,X1: $i] :
( member(X0,X1)
| ( X1 = null_class )
| ~ member(X0,null_class) ),
inference(superposition,[status(thm)],[c_195,c_160]) ).
tcf(c_3516,plain,
! [X0: $i] :
( member(X0,null_class)
| ~ member(X0,x) ),
inference(superposition,[status(thm)],[c_2646,c_142]) ).
tcf(c_3559,plain,
( member(regular(x),null_class)
| ( x = null_class ) ),
inference(superposition,[status(thm)],[c_194,c_3516]) ).
tcf(c_3560,plain,
member(regular(x),null_class),
inference(forward_subsumption_resolution,[status(thm)],[c_3559,c_2645]) ).
tcf(c_3750,plain,
! [X0: $i] :
( member(regular(x),X0)
| ( X0 = null_class ) ),
inference(superposition,[status(thm)],[c_3560,c_3446]) ).
tcf(c_3768,plain,
! [X0: $i] :
( ( complement(X0) = null_class )
| ~ member(regular(x),X0) ),
inference(superposition,[status(thm)],[c_3750,c_163]) ).
tcf(c_3946,plain,
complement(null_class) = null_class,
inference(superposition,[status(thm)],[c_3560,c_3768]) ).
tcf(c_3998,plain,
! [X0: $i] : ~ member(X0,null_class),
inference(superposition,[status(thm)],[c_3946,c_163]) ).
tcf(c_4000,plain,
$false,
inference(backward_subsumption_resolution,[status(thm)],[c_3560,c_3998]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.01 % Problem : SET063-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.02 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.04/0.29 % Computer : n012.cluster.edu
% 0.04/0.29 % Model : x86_64 x86_64
% 0.04/0.29 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.04/0.29 % Memory : 8046.5625MB
% 0.04/0.29 % OS : Linux 6.8.0-71-generic
% 0.04/0.29 % CPULimit : 300
% 0.04/0.29 % WCLimit : 300
% 0.04/0.29 % DateTime : Thu Sep 24 09:31:20 UTC 2026
% 0.04/0.29 % CPUTime :
% 0.04/0.29 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.04/0.31 Running first-order theorem proving
% 0.04/0.31 Running: /export/starexec/sandbox2/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s fof_schedule -t 300 /export/starexec/sandbox2/benchmark/theBenchmark.p
% 0.04/0.32
% 0.04/0.32 % ======== iProver multi-core TPTP/SMT =========
% 0.04/0.32
% 0.04/0.32 % Detected problem language: tptp
% 0.04/0.33 % Proving...
% 3.65/1.08 % SZS status Started for theBenchmark.p
% 3.65/1.08 % SZS status Unsatisfiable for theBenchmark.p
% 3.65/1.08
% 3.65/1.08 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 3.65/1.08
% 3.65/1.08 % ------ iProver source info
% 3.65/1.08
% 3.65/1.08 % git: date: 2026-07-19 20:42:38 +0200
% 3.65/1.08 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 3.65/1.08 % git: non_committed_changes: false
% 3.65/1.08
% 3.65/1.08 % ------ Parsing...% successful
% 3.65/1.08
% 3.65/1.08
% 3.65/1.08 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 3.65/1.08
% 3.65/1.08 % ------ 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 %
% 3.65/1.08
% 3.65/1.08 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 3.65/1.08
% 3.65/1.08 % ------ Preprocessing... sf_s rm: 1 0s sf_e sf_s rm: 0 0s sf_e
% 3.65/1.08 % ------ Proving...
% 3.65/1.08 % ------ Problem Properties
% 3.65/1.08
% 3.65/1.08 %
% 3.65/1.08 % clauses 69
% 3.65/1.08 % conjectures 2
% 3.65/1.08 % EPR 14
% 3.65/1.08 % Horn 61
% 3.65/1.08 % unary 17
% 3.65/1.08 % binary 32
% 3.65/1.08 % lits 147
% 3.65/1.08 % lits eq 21
% 3.65/1.08 % fd_pure 0
% 3.65/1.08 % fd_pseudo 0
% 3.65/1.08 % fd_cond 3
% 3.65/1.08 % fd_pseudo_cond 3
% 3.65/1.08 % AC symbols 0
% 3.65/1.08
% 3.65/1.08 % ------ Schedule dynamic 5 is on
% 3.65/1.08
% 3.65/1.08 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 3.65/1.08
% 3.65/1.08
% 3.65/1.08 % ------
% 3.65/1.08 % Current options:
% 3.65/1.08 % ------
% 3.65/1.08
% 3.65/1.08
% 3.65/1.08 %
% 3.65/1.08
% 3.65/1.08 % ------ Proving...
% 3.65/1.08 %
% 3.65/1.08
% 3.65/1.08 % SZS status Unsatisfiable for theBenchmark.p
% 3.65/1.08
% 3.65/1.08 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 3.65/1.08
% 3.65/1.08
%------------------------------------------------------------------------------