%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : SET094-6 : 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 : 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 : Fri Sep 25 02:46:33 PM UTC 2026
% Result : Unsatisfiable 3.21s 1.20s
% Output : CNFRefutation 0.93s
% Verified :
% SZS Type : Refutation
% Derivation depth : 8
% Number of leaves : 7
% Syntax : Number of formulae : 21 ( 18 unt; 2 def)
% Number of atoms : 38 ( 18 equ)
% Maximal formula atoms : 3 ( 1 avg)
% Number of connectives : 12 ( 7 ~; 5 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 2 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 : 5 ( 3 usr; 3 prp; 0-2 aty)
% Number of functors : 5 ( 5 usr; 2 con; 0-2 aty)
% Number of variables : 8 ( 0 sgn 8 !; 0 ?; 4 :)
% Comments :
%------------------------------------------------------------------------------
fof(f8,axiom,
! [X2,X0,X1] :
( X0 = X2
| X0 = X1
| ~ member(X0,unordered_pair(X1,X2)) ),
file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',unordered_pair_member) ).
fof(f12,axiom,
! [X0] : unordered_pair(X0,X0) = singleton(X0),
file('/export/starexec/sandbox/benchmark/Axioms/SET004-0.ax',singleton_set) ).
fof(f101,negated_conjecture,
singleton(member_of(x)) = x,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_property_of_singletons1_1) ).
fof(f102,plain,
x = singleton(member_of(x)),
inference(reorient_equations,[],[f101]) ).
fof(f103,negated_conjecture,
member(y,x),
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_property_of_singletons1_2) ).
fof(f104,negated_conjecture,
member_of(x) != y,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',prove_property_of_singletons1_3) ).
fof(f153,plain,
x = unordered_pair(member_of(x),member_of(x)),
inference(definition_unfolding,[],[f102,f12]) ).
tcf(c_150,plain,
! [X0: $i,X1: $i,X2: $i] :
( ( X0 = X2 )
| ( X0 = X1 )
| ~ member(X0,unordered_pair(X1,X2)) ),
inference(cnf_transformation,[],[f8]) ).
tcf(c_218,negated_conjecture,
unordered_pair(member_of(x),member_of(x)) = x,
inference(cnf_transformation,[],[f153]) ).
tcf(c_219,negated_conjecture,
member(y,x),
inference(cnf_transformation,[],[f103]) ).
tcf(c_220,negated_conjecture,
member_of(x) != y,
inference(cnf_transformation,[],[f104]) ).
tcf(c_2653,definition,
iPr_def_10 = member_of(x),
introduced(definition,[new_symbols(definition,[iPr_def_10])],[]) ).
tcf(c_2654,definition,
iPr_def_11 = unordered_pair(iPr_def_10,iPr_def_10),
introduced(definition,[new_symbols(definition,[iPr_def_11])],[]) ).
tcf(c_2655,negated_conjecture,
iPr_def_10 != y,
inference(demodulation,[status(thm)],[c_220,c_2653]) ).
tcf(c_2656,negated_conjecture,
member(y,x),
inference(demodulation,[status(thm)],[c_219]) ).
tcf(c_2657,negated_conjecture,
iPr_def_11 = x,
inference(demodulation,[status(thm)],[c_218,c_2654]) ).
tcf(c_3424,plain,
member(y,iPr_def_11),
inference(light_normalisation,[status(thm)],[c_2656,c_2657]) ).
tcf(c_4070,plain,
! [X0: $i] :
( ( X0 = iPr_def_10 )
| ~ member(X0,iPr_def_11) ),
inference(superposition,[status(thm)],[c_2654,c_150]) ).
tcf(c_4134,plain,
y = iPr_def_10,
inference(superposition,[status(thm)],[c_3424,c_4070]) ).
tcf(c_4155,plain,
iPr_def_10 != iPr_def_10,
inference(demodulation,[status(thm)],[c_2655,c_4134]) ).
tcf(c_4157,plain,
$false,
inference(equality_resolution_simp,[status(thm)],[c_4155]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : SET094-6 : TPTP v9.3.1. Bugfixed v2.1.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.12/0.37 % Computer : n010.cluster.edu
% 0.12/0.37 % Model : x86_64 x86_64
% 0.12/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.12/0.37 % Memory : 8046.5625MB
% 0.12/0.37 % OS : Linux 6.8.0-71-generic
% 0.12/0.37 % CPULimit : 300
% 0.12/0.37 % WCLimit : 300
% 0.12/0.37 % DateTime : Thu Sep 24 09:45:13 UTC 2026
% 0.12/0.38 % CPUTime :
% 0.12/0.38 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.12/0.42 Running first-order theorem proving
% 0.12/0.42 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
% 0.12/0.43
% 0.12/0.43 % ======== iProver multi-core TPTP/SMT =========
% 0.12/0.43
% 0.12/0.43 % Detected problem language: tptp
% 0.12/0.44 % Proving...
% 3.21/1.20 % SZS status Started for theBenchmark.p
% 3.21/1.20 % SZS status Unsatisfiable for theBenchmark.p
% 3.21/1.20
% 3.21/1.20 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 3.21/1.20
% 3.21/1.20 % ------ iProver source info
% 3.21/1.20
% 3.21/1.20 % git: date: 2026-07-19 20:42:38 +0200
% 3.21/1.20 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 3.21/1.20 % git: non_committed_changes: false
% 3.21/1.20
% 3.21/1.20 % ------ Parsing...% successful
% 3.21/1.20
% 3.21/1.20
% 3.21/1.20 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 3.21/1.20
% 3.21/1.20 % ------ 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 %
% 3.21/1.20
% 3.21/1.20 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 3.21/1.20
% 3.21/1.20 % ------ Preprocessing... sf_s rm: 1 0s sf_e sf_s rm: 0 0s sf_e
% 3.21/1.20 % ------ Proving...
% 3.21/1.20 % ------ Problem Properties
% 3.21/1.20
% 3.21/1.20 %
% 3.21/1.20 % clauses 72
% 3.21/1.20 % conjectures 3
% 3.21/1.20 % EPR 15
% 3.21/1.20 % Horn 64
% 3.21/1.20 % unary 20
% 3.21/1.20 % binary 32
% 3.21/1.20 % lits 150
% 3.21/1.20 % lits eq 24
% 3.21/1.20 % fd_pure 0
% 3.21/1.20 % fd_pseudo 0
% 3.21/1.20 % fd_cond 3
% 3.21/1.20 % fd_pseudo_cond 3
% 3.21/1.20 % AC symbols 0
% 3.21/1.20
% 3.21/1.20 % ------ Schedule dynamic 5 is on
% 3.21/1.20
% 3.21/1.20 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 3.21/1.20
% 3.21/1.20
% 3.21/1.20 % ------
% 3.21/1.20 % Current options:
% 3.21/1.20 % ------
% 3.21/1.20
% 3.21/1.20
% 3.21/1.20 %
% 3.21/1.20
% 3.21/1.20 % ------ Proving...
% 3.21/1.20 %
% 3.21/1.20
% 3.21/1.20 % SZS status Unsatisfiable for theBenchmark.p
% 3.21/1.20
% 3.21/1.20 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 0.93/1.20
% 0.93/1.20
%------------------------------------------------------------------------------