%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : SET203-6 : 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 : n011.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 02:46:56 PM UTC 2026
% Result : Unsatisfiable 4.25s 1.28s
% Output : CNFRefutation 4.25s
% Verified :
% SZS Type : Refutation
% Derivation depth : 4
% Number of leaves : 6
% Syntax : Number of formulae : 18 ( 11 unt; 0 def)
% Number of atoms : 29 ( 0 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 25 ( 14 ~; 11 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 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 : 7 ( 7 usr; 5 con; 0-2 aty)
% Number of variables : 18 ( 0 sgn 18 !; 0 ?; 10 :)
% 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(f4,axiom,
! [X0] : subclass(X0,universal_class),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',class_elements_are_sets) ).
fof(f16,axiom,
! [X2,X3,X0,X1] :
( member(ordered_pair(X0,X2),cross_product(X1,X3))
| ~ member(X2,X3)
| ~ member(X0,X1) ),
file('/export/starexec/sandbox2/benchmark/Axioms/SET004-0.ax',cartesian_product3) ).
fof(f122,negated_conjecture,
member(u,x),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_corollary_to_X_product_property1_1) ).
fof(f123,negated_conjecture,
member(v,y),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_corollary_to_X_product_property1_2) ).
fof(f124,negated_conjecture,
~ member(ordered_pair(u,v),cross_product(universal_class,universal_class)),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_corollary_to_X_product_property1_3) ).
tcf(c_164,negated_conjecture,
member(u,x),
inference(cnf_transformation,[],[f122]) ).
tcf(c_165,negated_conjecture,
member(v,y),
inference(cnf_transformation,[],[f123]) ).
tcf(c_166,negated_conjecture,
~ member(ordered_pair(u,v),cross_product(universal_class,universal_class)),
inference(cnf_transformation,[],[f124]) ).
tcf(c_167,plain,
! [X0: $i] : subclass(X0,universal_class),
inference(cnf_transformation,[],[f4]) ).
tcf(c_168,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] :
( member(ordered_pair(X0,X2),cross_product(X1,X3))
| ~ member(X2,X3)
| ~ member(X0,X1) ),
inference(cnf_transformation,[],[f16]) ).
tcf(c_174,plain,
! [X0: $i,X1: $i,X2: $i] :
( member(X0,X2)
| ~ subclass(X1,X2)
| ~ member(X0,X1) ),
inference(cnf_transformation,[],[f1]) ).
tcf(c_478,plain,
! [X0: $i] :
( member(u,X0)
| ~ subclass(x,X0) ),
inference(superposition,[status(thm)],[c_164,c_174]) ).
tcf(c_479,plain,
! [X0: $i] :
( member(v,X0)
| ~ subclass(y,X0) ),
inference(superposition,[status(thm)],[c_165,c_174]) ).
tcf(c_492,plain,
( ~ member(v,universal_class)
| ~ member(u,universal_class) ),
inference(superposition,[status(thm)],[c_168,c_166]) ).
tcf(c_517,plain,
member(u,universal_class),
inference(superposition,[status(thm)],[c_167,c_478]) ).
tcf(c_526,plain,
member(v,universal_class),
inference(superposition,[status(thm)],[c_167,c_479]) ).
tcf(c_528,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_526,c_517,c_492]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET203-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.07/0.34 % Computer : n011.cluster.edu
% 0.07/0.34 % Model : x86_64 x86_64
% 0.07/0.34 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.07/0.34 % Memory : 8046.5625MB
% 0.07/0.34 % OS : Linux 6.8.0-71-generic
% 0.07/0.34 % CPULimit : 300
% 0.07/0.34 % WCLimit : 300
% 0.07/0.34 % DateTime : Thu Sep 24 10:14:43 UTC 2026
% 0.07/0.35 % CPUTime :
% 0.07/0.35 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.14/0.39 Running first-order theorem proving
% 0.14/0.39 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
% 0.14/0.40
% 0.14/0.40 % ======== iProver multi-core TPTP/SMT =========
% 0.14/0.40
% 0.14/0.40 % Detected problem language: tptp
% 0.14/0.41 % Proving...
% 4.25/1.28 % SZS status Started for theBenchmark.p
% 4.25/1.28 % SZS status Unsatisfiable for theBenchmark.p
% 4.25/1.28
% 4.25/1.28 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 4.25/1.28
% 4.25/1.28 % ------ iProver source info
% 4.25/1.28
% 4.25/1.28 % git: date: 2026-07-19 20:42:38 +0200
% 4.25/1.28 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 4.25/1.28 % git: non_committed_changes: false
% 4.25/1.28
% 4.25/1.28 % ------ Parsing...% successful
% 4.25/1.28
% 4.25/1.28
% 4.25/1.28 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 4.25/1.28
% 4.25/1.28 % ------ Preprocessing... sup_sim: 0 sf_s rm: 1 0s sf_e pe_s pe_e sup_sim: 0 sf_s rm: 1 0s sf_e pe_s pe_e %
% 4.25/1.28
% 4.25/1.28 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 4.25/1.28
% 4.25/1.28 % ------ Preprocessing... sf_s rm: 1 0s sf_e sf_s rm: 0 0s sf_e
% 4.25/1.28 % ------ Proving...
% 4.25/1.28 % ------ Problem Properties
% 4.25/1.28
% 4.25/1.28 %
% 4.25/1.28 % clauses 10
% 4.25/1.28 % conjectures 3
% 4.25/1.28 % EPR 6
% 4.25/1.28 % Horn 10
% 4.25/1.28 % unary 5
% 4.25/1.28 % binary 2
% 4.25/1.28 % lits 18
% 4.25/1.28 % lits eq 1
% 4.25/1.28 % fd_pure 0
% 4.25/1.28 % fd_pseudo 0
% 4.25/1.28 % fd_cond 0
% 4.25/1.28 % fd_pseudo_cond 1
% 4.25/1.28 % AC symbols 0
% 4.25/1.28
% 4.25/1.28 % ------ Schedule dynamic 5 is on
% 4.25/1.28
% 4.25/1.28 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 4.25/1.28
% 4.25/1.28
% 4.25/1.28 % ------
% 4.25/1.28 % Current options:
% 4.25/1.28 % ------
% 4.25/1.28
% 4.25/1.28
% 4.25/1.28 %
% 4.25/1.28
% 4.25/1.28 % ------ Proving...
% 4.25/1.28 %
% 4.25/1.28
% 4.25/1.28 % SZS status Unsatisfiable for theBenchmark.p
% 4.25/1.28
% 4.25/1.28 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 4.25/1.28
% 4.25/1.28
%------------------------------------------------------------------------------