%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : HEN009-5 : TPTP v9.3.1. Bugfixed v1.2.1.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% Computer : n002.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 01:37:24 PM UTC 2026
% Result : Unsatisfiable 3.81s 6.53s
% Output : CNFRefutation 3.81s
% Verified :
% SZS Type : Refutation
% Derivation depth : 11
% Number of leaves : 9
% Syntax : Number of formulae : 33 ( 22 unt; 3 def)
% Number of atoms : 71 ( 47 equ)
% Maximal formula atoms : 3 ( 2 avg)
% Number of connectives : 33 ( 18 ~; 15 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 6 ( 3 avg)
% Maximal term depth : 4 ( 1 avg)
% Number of types : 1 ( 0 usr)
% Number of type conns : 0 ( 0 >; 0 *; 0 +; 0 <<)
% Number of predicates : 5 ( 3 usr; 4 prp; 0-2 aty)
% Number of functors : 4 ( 4 usr; 3 con; 0-2 aty)
% Number of variables : 38 ( 0 sgn 38 !; 0 ?; 18 :)
% Comments :
%------------------------------------------------------------------------------
fof(f1,axiom,
! [X0,X1] : divide(divide(X0,X1),X0) = zero,
file('/export/starexec/sandbox2/benchmark/Axioms/HEN003-0.ax',quotient_smaller_than_numerator) ).
fof(f4,axiom,
! [X0] : divide(zero,X0) = zero,
file('/export/starexec/sandbox2/benchmark/Axioms/HEN003-0.ax',zero_is_smallest) ).
fof(f5,plain,
! [X0] : zero = divide(zero,X0),
inference(reorient_equations,[],[f4]) ).
fof(f6,axiom,
! [X0,X1] :
( X0 = X1
| divide(X1,X0) != zero
| divide(X0,X1) != zero ),
file('/export/starexec/sandbox2/benchmark/Axioms/HEN003-0.ax',divide_and_equal) ).
fof(f7,plain,
! [X0,X1] :
( X0 = X1
| zero != divide(X1,X0)
| divide(X0,X1) != zero ),
inference(reorient_equations,[],[f6]) ).
fof(f12,axiom,
! [X2,X0,X1] :
( divide(divide(X0,X2),X1) = zero
| divide(divide(X0,X1),X2) != zero ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',property_of_divide1) ).
fof(f13,plain,
! [X2,X0,X1] :
( zero = divide(divide(X0,X2),X1)
| zero != divide(divide(X0,X1),X2) ),
inference(reorient_equations,[],[f12]) ).
fof(f14,axiom,
! [X2,X0,X1] :
( divide(divide(X2,X1),divide(X2,X0)) = zero
| divide(X0,X1) != zero ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',property_of_divide2) ).
fof(f15,plain,
! [X2,X0,X1] :
( zero = divide(divide(X2,X1),divide(X2,X0))
| divide(X0,X1) != zero ),
inference(reorient_equations,[],[f14]) ).
fof(f16,negated_conjecture,
divide(identity,a) != divide(identity,divide(identity,divide(identity,a))),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',prove_this) ).
tcf(c_58,plain,
! [X0: $i,X1: $i] : divide(divide(X0,X1),X0) = zero,
inference(cnf_transformation,[],[f1]) ).
tcf(c_60,plain,
! [X0: $i] : divide(zero,X0) = zero,
inference(cnf_transformation,[],[f5]) ).
tcf(c_61,plain,
! [X0: $i,X1: $i] :
( ( X0 = X1 )
| ( divide(X1,X0) != zero )
| ( divide(X0,X1) != zero ) ),
inference(cnf_transformation,[],[f7]) ).
tcf(c_64,plain,
! [X0: $i,X1: $i,X2: $i] :
( ( divide(divide(X0,X2),X1) = zero )
| ( divide(divide(X0,X1),X2) != zero ) ),
inference(cnf_transformation,[],[f13]) ).
tcf(c_65,plain,
! [X0: $i,X1: $i,X2: $i] :
( ( divide(divide(X2,X1),divide(X2,X0)) = zero )
| ( divide(X0,X1) != zero ) ),
inference(cnf_transformation,[],[f15]) ).
tcf(c_66,negated_conjecture,
divide(identity,divide(identity,divide(identity,a))) != divide(identity,a),
inference(cnf_transformation,[],[f16]) ).
tcf(c_124,definition,
iPr_def_10 = divide(identity,a),
introduced(definition,[new_symbols(definition,[iPr_def_10])],[]) ).
tcf(c_125,definition,
iPr_def_11 = divide(identity,iPr_def_10),
introduced(definition,[new_symbols(definition,[iPr_def_11])],[]) ).
tcf(c_126,definition,
iPr_def_12 = divide(identity,iPr_def_11),
introduced(definition,[new_symbols(definition,[iPr_def_12])],[]) ).
tcf(c_127,negated_conjecture,
iPr_def_12 != iPr_def_10,
inference(demodulation,[status(thm)],[c_66,c_124,c_125,c_126]) ).
tcf(c_252,plain,
( ( iPr_def_12 = iPr_def_10 )
| ( divide(iPr_def_12,iPr_def_10) != zero )
| ( divide(iPr_def_10,iPr_def_12) != zero ) ),
inference(instantiation,[status(thm)],[c_61]) ).
tcf(c_288,plain,
! [X0: $i,X1: $i] : divide(divide(X0,X0),X1) = zero,
inference(superposition,[status(thm)],[c_58,c_64]) ).
tcf(c_420,plain,
! [X0: $i] :
( ( X0 = zero )
| ( divide(X0,zero) != zero ) ),
inference(superposition,[status(thm)],[c_60,c_61]) ).
tcf(c_956,plain,
! [X0: $i] : divide(X0,X0) = zero,
inference(superposition,[status(thm)],[c_288,c_420]) ).
tcf(c_979,plain,
! [X0: $i,X1: $i] : divide(divide(X0,divide(X0,X1)),X1) = zero,
inference(superposition,[status(thm)],[c_956,c_64]) ).
tcf(c_1104,plain,
divide(divide(identity,iPr_def_10),a) = zero,
inference(superposition,[status(thm)],[c_124,c_979]) ).
tcf(c_1109,plain,
divide(divide(identity,iPr_def_11),iPr_def_10) = zero,
inference(superposition,[status(thm)],[c_125,c_979]) ).
tcf(c_1134,plain,
divide(iPr_def_12,iPr_def_10) = zero,
inference(light_normalisation,[status(thm)],[c_1109,c_126]) ).
tcf(c_1136,plain,
divide(iPr_def_11,a) = zero,
inference(light_normalisation,[status(thm)],[c_1104,c_125]) ).
tcf(c_1230,plain,
! [X0: $i] : divide(divide(X0,a),divide(X0,iPr_def_11)) = zero,
inference(superposition,[status(thm)],[c_1136,c_65]) ).
tcf(c_1818,plain,
divide(divide(identity,a),iPr_def_12) = zero,
inference(superposition,[status(thm)],[c_126,c_1230]) ).
tcf(c_1836,plain,
divide(iPr_def_10,iPr_def_12) = zero,
inference(light_normalisation,[status(thm)],[c_1818,c_124]) ).
tcf(c_1846,plain,
$false,
inference(prop_impl_just,[status(thm)],[c_1836,c_1134,c_252,c_127]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : HEN009-5 : TPTP v9.3.1. Bugfixed v1.2.1.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.11/5.59 % Computer : n002.cluster.edu
% 0.11/5.59 % Model : x86_64 x86_64
% 0.11/5.59 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.11/5.59 % Memory : 8046.5625MB
% 0.11/5.59 % OS : Linux 6.8.0-71-generic
% 0.11/5.59 % CPULimit : 300
% 0.11/5.59 % WCLimit : 300
% 0.11/5.59 % DateTime : Wed Sep 23 16:18:26 UTC 2026
% 0.11/5.59 % CPUTime :
% 0.11/5.59 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.16/5.64 Running first-order theorem proving
% 0.16/5.64 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
% 0.16/5.65
% 0.16/5.65 % ======== iProver multi-core TPTP/SMT =========
% 0.16/5.65
% 0.16/5.66 % Detected problem language: tptp
% 0.16/5.67 % Proving...
% 3.81/6.53 % SZS status Started for theBenchmark.p
% 3.81/6.53 % SZS status Unsatisfiable for theBenchmark.p
% 3.81/6.53
% 3.81/6.53 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 3.81/6.53
% 3.81/6.53 % ------ iProver source info
% 3.81/6.53
% 3.81/6.53 % git: date: 2026-07-19 20:42:38 +0200
% 3.81/6.53 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 3.81/6.53 % git: non_committed_changes: false
% 3.81/6.53
% 3.81/6.53 % ------ Parsing...% successful
% 3.81/6.53
% 3.81/6.53
% 3.81/6.53 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 3.81/6.53
% 3.81/6.53 % ------ Preprocessing... sup_sim: 0 sf_s rm: 0 0s sf_e pe_s pe_e %
% 3.81/6.53
% 3.81/6.53 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 3.81/6.53
% 3.81/6.53 % ------ Preprocessing... sf_s rm: 0 0s sf_e
% 3.81/6.53 % ------ Proving...
% 3.81/6.53 % ------ Problem Properties
% 3.81/6.53
% 3.81/6.53 %
% 3.81/6.53 % clauses 12
% 3.81/6.53 % conjectures 1
% 3.81/6.53 % EPR 1
% 3.81/6.53 % Horn 12
% 3.81/6.53 % unary 8
% 3.81/6.53 % binary 2
% 3.81/6.53 % lits 18
% 3.81/6.53 % lits eq 18
% 3.81/6.53 % fd_pure 0
% 3.81/6.53 % fd_pseudo 0
% 3.81/6.53 % fd_cond 0
% 3.81/6.53 % fd_pseudo_cond 1
% 3.81/6.53 % AC symbols 0
% 3.81/6.53
% 3.81/6.53 % ------ Schedule dynamic 5 is on
% 3.81/6.53
% 3.81/6.53 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 3.81/6.53
% 3.81/6.53
% 3.81/6.53 % ------
% 3.81/6.53 % Current options:
% 3.81/6.53 % ------
% 3.81/6.53
% 3.81/6.53
% 3.81/6.53 %
% 3.81/6.53
% 3.81/6.53 % ------ Proving...
% 3.81/6.53 %
% 3.81/6.53
% 3.81/6.53 % SZS status Unsatisfiable for theBenchmark.p
% 3.81/6.53
% 3.81/6.53 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 3.81/6.53
% 3.81/6.53
%------------------------------------------------------------------------------