%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : LAT034-1 : TPTP v9.3.1. Bugfixed v2.5.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% Computer : n007.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 01:58:08 PM UTC 2026
% Result : Unsatisfiable 1.42s 1.16s
% Output : CNFRefutation 1.42s
% Verified :
% SZS Type : Refutation
% Derivation depth : 3
% Number of leaves : 3
% Syntax : Number of formulae : 9 ( 9 unt; 0 def)
% Number of atoms : 9 ( 8 equ)
% Maximal formula atoms : 1 ( 1 avg)
% Number of connectives : 3 ( 3 ~; 0 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 3 ( 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 : 2 ( 0 usr; 1 prp; 0-2 aty)
% Number of functors : 3 ( 3 usr; 1 con; 0-2 aty)
% Number of variables : 9 ( 0 sgn 9 !; 0 ?; 5 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0,X1] : meet(X0,join(X0,X1)) = X0,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',absorption1) ).
fof(f2,axiom,
! [X0,X1] : join(X0,meet(X0,X1)) = X0,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',absorption2) ).
fof(f7,negated_conjecture,
meet(xx,xx) != xx,
file('/export/starexec/sandbox/benchmark/theBenchmark.p',idempotence_of_meet) ).
fof(f8,plain,
xx != meet(xx,xx),
inference(reorient_equations,[],[f7]) ).
tcf(c_56,plain,
! [X0: $i,X1: $i] : meet(X0,join(X0,X1)) = X0,
inference(cnf_transformation,[],[f1]) ).
tcf(c_57,plain,
! [X0: $i,X1: $i] : join(X0,meet(X0,X1)) = X0,
inference(cnf_transformation,[],[f2]) ).
tcf(c_62,negated_conjecture,
meet(xx,xx) != xx,
inference(cnf_transformation,[],[f8]) ).
tcf(c_133,plain,
! [X0: $i] : meet(X0,X0) = X0,
inference(superposition,[status(thm)],[c_57,c_56]) ).
tcf(c_134,plain,
$false,
inference(backward_subsumption_resolution,[status(thm)],[c_62,c_133]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.02 % Problem : LAT034-1 : TPTP v9.3.1. Bugfixed v2.5.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.10/0.37 % Computer : n007.cluster.edu
% 0.10/0.37 % Model : x86_64 x86_64
% 0.10/0.37 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.10/0.37 % Memory : 8046.5625MB
% 0.10/0.37 % OS : Linux 6.8.0-71-generic
% 0.10/0.37 % CPULimit : 300
% 0.10/0.37 % WCLimit : 300
% 0.10/0.37 % DateTime : Wed Sep 23 20:02:07 UTC 2026
% 0.10/0.37 % CPUTime :
% 0.10/0.37 Running run_iprover 300 /export/starexec/sandbox/benchmark/theBenchmark.p THM
% 0.10/0.40 Running UEQ theorem proving
% 0.10/0.40 Running: /export/starexec/sandbox/solver/bin/iproveropt-multi-core.sh -d -n -l tptp -s ueq_schedule -t 300 /export/starexec/sandbox/benchmark/theBenchmark.p
% 0.10/0.41
% 0.10/0.41 % ======== iProver multi-core TPTP/SMT =========
% 0.10/0.41
% 0.10/0.41 % Detected problem language: tptp
% 0.10/0.42 % Proving...
% 1.42/1.16 WARNING - Clausifier option not provided in the heuristic config "heur/vip2_118404", setting default options.
% 1.42/1.16 % SZS status Started for theBenchmark.p
% 1.42/1.16 % SZS status Unsatisfiable for theBenchmark.p
% 1.42/1.16
% 1.42/1.16 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 1.42/1.16
% 1.42/1.16 % ------ iProver source info
% 1.42/1.16
% 1.42/1.16 % git: date: 2026-07-19 20:42:38 +0200
% 1.42/1.16 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 1.42/1.16 % git: non_committed_changes: false
% 1.42/1.16
% 1.42/1.16 % ------ Parsing...% successful
% 1.42/1.16
% 1.42/1.16
% 1.42/1.16 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 1.42/1.16
% 1.42/1.16 % ------ Preprocessing... sup_sim: 0 sf_s rm: 0 0s sf_e pe_s pe_e %
% 1.42/1.16
% 1.42/1.16 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 1.42/1.16
% 1.42/1.16 % ------ Preprocessing... sf_s rm: 0 0s sf_e
% 1.42/1.16 % ------ Proving...
% 1.42/1.16 % ------ Problem Properties
% 1.42/1.16
% 1.42/1.16 %
% 1.42/1.16 % clauses 7
% 1.42/1.16 % conjectures 1
% 1.42/1.16 % EPR 0
% 1.42/1.16 % Horn 7
% 1.42/1.16 % unary 7
% 1.42/1.16 % binary 0
% 1.42/1.16 % lits 7
% 1.42/1.16 % lits eq 7
% 1.42/1.16 % fd_pure 0
% 1.42/1.16 % fd_pseudo 0
% 1.42/1.16 % fd_cond 0
% 1.42/1.16 % fd_pseudo_cond 0
% 1.42/1.16 % AC symbols 2
% 1.42/1.16
% 1.42/1.16 % ------ Input Options Time Limit: Unbounded
% 1.42/1.16
% 1.42/1.16
% 1.42/1.16 % ------
% 1.42/1.16 % Current options:
% 1.42/1.16 % ------
% 1.42/1.16
% 1.42/1.16
% 1.42/1.16 %
% 1.42/1.16
% 1.42/1.16 % ------ Proving...
% 1.42/1.16 %
% 1.42/1.16
% 1.42/1.16 % SZS status Unsatisfiable for theBenchmark.p
% 1.42/1.16
% 1.42/1.16 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 1.42/1.16
% 1.42/1.16
%------------------------------------------------------------------------------