%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : SET183-6 : 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 02:46:52 PM UTC 2026
% Result : Unsatisfiable 0.07s 10.98s
% Output : CNFRefutation 0.07s
% Verified :
% SZS Type : Refutation
% Derivation depth : 9
% Number of leaves : 9
% Syntax : Number of formulae : 32 ( 13 unt; 1 def)
% Number of atoms : 73 ( 10 equ)
% Maximal formula atoms : 3 ( 2 avg)
% Number of connectives : 53 ( 27 ~; 26 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 7 ( 4 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 : 5 ( 3 usr; 2 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 2 con; 0-2 aty)
% Number of variables : 36 ( 0 sgn 36 !; 0 ?; 21 :)
% 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(f2,axiom,
! [X0,X1] :
( subclass(X0,X1)
| member(not_subclass_element(X0,X1),X0) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',not_subclass_members1) ).
fof(f3,axiom,
! [X0,X1] :
( subclass(X0,X1)
| ~ member(not_subclass_element(X0,X1),X1) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',not_subclass_members2) ).
fof(f7,axiom,
! [X0,X1] :
( X0 = X1
| ~ subclass(X1,X0)
| ~ subclass(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',subclass_implies_equal) ).
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(f23,axiom,
! [X2,X0,X1] :
( member(X0,intersection(X1,X2))
| ~ member(X0,X2)
| ~ member(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',intersection3) ).
fof(f122,negated_conjecture,
subclass(x,y),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_subclass_property1_1) ).
fof(f123,negated_conjecture,
intersection(x,y) != x,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_subclass_property1_2) ).
fof(f124,plain,
x != intersection(x,y),
inference(reorient_equations,[],[f123]) ).
tcf(c_163,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X2,X1)
| ~ member(X2,X0)
| ~ subclass(X0,X1) ),
inference(cnf_transformation,[],[f1]) ).
tcf(c_164,plain,
! [X0: $i,X1: $i] :
( subclass(X0,X1)
| member(not_subclass_element(X0,X1),X0) ),
inference(cnf_transformation,[],[f2]) ).
tcf(c_165,plain,
! [X0: $i,X1: $i] :
( subclass(X0,X1)
| ~ member(not_subclass_element(X0,X1),X1) ),
inference(cnf_transformation,[],[f3]) ).
tcf(c_169,plain,
! [X0: $i,X1: $i] :
( ( X0 = X1 )
| ~ subclass(X1,X0)
| ~ subclass(X0,X1) ),
inference(cnf_transformation,[],[f7]) ).
tcf(c_181,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,X1)
| ~ member(X0,intersection(X1,X2)) ),
inference(cnf_transformation,[],[f21]) ).
tcf(c_183,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,intersection(X1,X2))
| ~ member(X0,X2)
| ~ member(X0,X1) ),
inference(cnf_transformation,[],[f23]) ).
tcf(c_256,negated_conjecture,
subclass(x,y),
inference(cnf_transformation,[],[f122]) ).
tcf(c_257,negated_conjecture,
intersection(x,y) != x,
inference(cnf_transformation,[],[f124]) ).
tcf(c_2981,definition,
iPr_def_10 = intersection(x,y),
introduced(definition,[new_symbols(definition,[iPr_def_10])],[]) ).
tcf(c_2982,negated_conjecture,
iPr_def_10 != x,
inference(demodulation,[status(thm)],[c_257,c_2981]) ).
tcf(c_2983,negated_conjecture,
subclass(x,y),
inference(demodulation,[status(thm)],[c_256]) ).
tcf(c_3873,plain,
! [X0: $i] :
( member(X0,x)
| ~ member(X0,iPr_def_10) ),
inference(superposition,[status(thm)],[c_2981,c_181]) ).
tcf(c_3887,plain,
! [X0: $i] :
( subclass(iPr_def_10,X0)
| member(not_subclass_element(iPr_def_10,X0),x) ),
inference(superposition,[status(thm)],[c_164,c_3873]) ).
tcf(c_3898,plain,
subclass(iPr_def_10,x),
inference(superposition,[status(thm)],[c_3887,c_165]) ).
tcf(c_3991,plain,
! [X0: $i] :
( member(X0,y)
| ~ member(X0,x) ),
inference(superposition,[status(thm)],[c_2983,c_163]) ).
tcf(c_4203,plain,
( ( x = iPr_def_10 )
| ~ subclass(x,iPr_def_10) ),
inference(superposition,[status(thm)],[c_3898,c_169]) ).
tcf(c_4334,plain,
! [X0: $i] :
( member(X0,iPr_def_10)
| ~ member(X0,y)
| ~ member(X0,x) ),
inference(superposition,[status(thm)],[c_2981,c_183]) ).
tcf(c_5017,plain,
! [X0: $i] :
( member(X0,iPr_def_10)
| ~ member(X0,x) ),
inference(global_subsumption_just,[status(thm)],[c_4334,c_3991,c_4334]) ).
tcf(c_5024,plain,
! [X0: $i] :
( subclass(x,X0)
| member(not_subclass_element(x,X0),iPr_def_10) ),
inference(superposition,[status(thm)],[c_164,c_5017]) ).
tcf(c_5048,plain,
subclass(x,iPr_def_10),
inference(superposition,[status(thm)],[c_5024,c_165]) ).
tcf(c_5054,plain,
x = iPr_def_10,
inference(backward_subsumption_resolution,[status(thm)],[c_4203,c_5048]) ).
tcf(c_5066,plain,
iPr_def_10 != iPr_def_10,
inference(demodulation,[status(thm)],[c_2982,c_5054]) ).
tcf(c_5068,plain,
$false,
inference(equality_resolution_simp,[status(thm)],[c_5066]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.01 % Problem : SET183-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.02 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.04/10.32 % Computer : n012.cluster.edu
% 0.04/10.32 % Model : x86_64 x86_64
% 0.04/10.32 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.04/10.32 % Memory : 8046.5625MB
% 0.04/10.32 % OS : Linux 6.8.0-71-generic
% 0.04/10.32 % CPULimit : 300
% 0.04/10.32 % WCLimit : 300
% 0.04/10.32 % DateTime : Thu Sep 24 10:10:20 UTC 2026
% 0.04/10.32 % CPUTime :
% 0.04/10.32 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.04/10.34 Running first-order theorem proving
% 0.04/10.34 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
% 0.04/10.35
% 0.04/10.35 % ======== iProver multi-core TPTP/SMT =========
% 0.04/10.35
% 0.04/10.35 % Detected problem language: tptp
% 0.04/10.36 % Proving...
% 0.07/10.98 % SZS status Started for theBenchmark.p
% 0.07/10.98 % SZS status Unsatisfiable for theBenchmark.p
% 0.07/10.98
% 0.07/10.98 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 0.07/10.98
% 0.07/10.98 % ------ iProver source info
% 0.07/10.98
% 0.07/10.98 % git: date: 2026-07-19 20:42:38 +0200
% 0.07/10.98 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 0.07/10.98 % git: non_committed_changes: false
% 0.07/10.98
% 0.07/10.98 % ------ Parsing...% successful
% 0.07/10.98
% 0.07/10.98
% 0.07/10.98 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 0.07/10.98
% 0.07/10.98 % ------ Preprocessing... sup_sim: 0 sf_s rm: 1 0s sf_e pe_s pe:1:0s pe:2:0s pe:4:0s pe_e sup_sim: 0 sf_s rm: 3 0s sf_e pe_s pe_e %
% 0.07/10.98
% 0.07/10.98 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 0.07/10.98
% 0.07/10.98 % ------ Preprocessing... sf_s rm: 1 0s sf_e sf_s rm: 0 0s sf_e
% 0.07/10.98 % ------ Proving...
% 0.07/10.98 % ------ Problem Properties
% 0.07/10.98
% 0.07/10.98 %
% 0.07/10.98 % clauses 84
% 0.07/10.98 % conjectures 2
% 0.07/10.98 % EPR 14
% 0.07/10.98 % Horn 76
% 0.07/10.98 % unary 23
% 0.07/10.98 % binary 40
% 0.07/10.98 % lits 172
% 0.07/10.98 % lits eq 27
% 0.07/10.98 % fd_pure 0
% 0.07/10.98 % fd_pseudo 0
% 0.07/10.98 % fd_cond 3
% 0.07/10.98 % fd_pseudo_cond 7
% 0.07/10.98 % AC symbols 0
% 0.07/10.98
% 0.07/10.98 % ------ Schedule dynamic 5 is on
% 0.07/10.98
% 0.07/10.98 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 0.07/10.98
% 0.07/10.98
% 0.07/10.98 % ------
% 0.07/10.98 % Current options:
% 0.07/10.98 % ------
% 0.07/10.98
% 0.07/10.98
% 0.07/10.98 %
% 0.07/10.98
% 0.07/10.98 % ------ Proving...
% 0.07/10.98 %
% 0.07/10.98
% 0.07/10.98 % SZS status Unsatisfiable for theBenchmark.p
% 0.07/10.98
% 0.07/10.98 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 0.07/10.98
% 0.07/10.98
%------------------------------------------------------------------------------