%------------------------------------------------------------------------------
% File : iProver---3.9.4
% Problem : LCL847-1 : TPTP v9.3.1. Released v4.1.0.
% Transfm : none
% Format : tptp:raw
% Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% Computer : n003.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 02:08:33 PM UTC 2026
% Result : Unsatisfiable 59.75s 14.91s
% Output : CNFRefutation 59.75s
% Verified :
% SZS Type : Refutation
% Derivation depth : 13
% Number of leaves : 19
% Syntax : Number of formulae : 63 ( 45 unt; 5 def)
% Number of atoms : 142 ( 44 equ)
% Maximal formula atoms : 3 ( 2 avg)
% Number of connectives : 51 ( 27 ~; 24 |; 0 &)
% ( 0 <=>; 0 =>; 0 <=; 0 <~>)
% Maximal formula depth : 8 ( 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 : 10 ( 8 usr; 6 prp; 0-3 aty)
% Number of functors : 16 ( 16 usr; 5 con; 0-4 aty)
% Number of variables : 106 ( 0 sgn 106 !; 0 ?; 62 :)
% Comments :
%------------------------------------------------------------------------------
fof(f181,axiom,
! [X2,X3,X0,X1] :
( ~ c_in(X3,c_List_Oset(X1,X2),X2)
| ~ hBOOL(hAPP(X0,X3))
| c_List_Ofilter(X0,X1,X2) != c_List_Olist_ONil(X2) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_filter__empty__conv_0) ).
fof(f283,axiom,
! [X2,X3,X0,X1] :
( ~ c_in(X0,c_List_Oset(c_List_Olist_OCons(X3,X1,X2),X2),X2)
| X0 = X3
| c_in(X0,c_List_Oset(X1,X2),X2) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_set__ConsD_0) ).
fof(f301,axiom,
! [X2,X3,X0,X1] :
( ~ c_in(X1,c_List_Oset(c_List_OtakeWhile(X0,X2,X3),X3),X3)
| hBOOL(hAPP(X0,X1)) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_set__takeWhileD_1) ).
fof(f346,axiom,
! [X2,X0,X1] :
( c_in(c_List_Osko__List__Xin__listsp__conv__set__1__1(X0,X1,X2),c_List_Oset(X1,X2),X2)
| c_List_Olistsp(X0,X1,X2) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_in__listsp__conv__set_1) ).
fof(f424,axiom,
! [X0,X1] : c_List_OtakeWhile(X0,c_List_Olist_ONil(X1),X1) = c_List_Olist_ONil(X1),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_takeWhile_Osimps_I1_J_0) ).
fof(f425,plain,
! [X0,X1] : c_List_Olist_ONil(X1) = c_List_OtakeWhile(X0,c_List_Olist_ONil(X1),X1),
inference(reorient_equations,[],[f424]) ).
fof(f437,axiom,
! [X0,X1] : c_List_Osplice(X0,c_List_Olist_ONil(X1),X1) = X0,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_splice__Nil2_0) ).
fof(f438,axiom,
! [X0,X1] : c_List_Osplice(c_List_Olist_ONil(X0),X1,X0) = X1,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_splice_Osimps_I1_J_0) ).
fof(f553,axiom,
! [X2,X0,X1] : c_List_Olist__update(X0,X1,c_List_Onth(X0,X1,X2),X2) = X0,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_list__update__id_0) ).
fof(f605,axiom,
! [X0,X1] : c_List_Ofilter(X0,c_List_Olist_ONil(X1),X1) = c_List_Olist_ONil(X1),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_filter_Osimps_I1_J_0) ).
fof(f606,plain,
! [X0,X1] : c_List_Olist_ONil(X1) = c_List_Ofilter(X0,c_List_Olist_ONil(X1),X1),
inference(reorient_equations,[],[f605]) ).
fof(f638,axiom,
! [X2,X0,X1] :
( ~ hBOOL(hAPP(X0,c_List_Osko__List__Xin__listsp__conv__set__1__1(X0,X1,X2)))
| c_List_Olistsp(X0,X1,X2) ),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_in__listsp__conv__set_2) ).
fof(f665,axiom,
! [X2,X0,X1] : c_List_Onth(c_List_Olist_OCons(X0,X1,X2),c_HOL_Ozero__class_Ozero(tc_nat),X2) = X0,
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_nth__Cons_H_0) ).
fof(f668,axiom,
! [X2,X3,X0,X1] : c_List_Olist__update(c_List_Olist_OCons(X0,X1,X2),c_HOL_Ozero__class_Ozero(tc_nat),X3,X2) = c_List_Olist_OCons(X3,X1,X2),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_list__update__code_I2_J_0) ).
fof(f669,plain,
! [X2,X3,X0,X1] : c_List_Olist_OCons(X3,X1,X2) = c_List_Olist__update(c_List_Olist_OCons(X0,X1,X2),c_HOL_Ozero__class_Ozero(tc_nat),X3,X2),
inference(reorient_equations,[],[f668]) ).
fof(f741,axiom,
hBOOL(hAPP(c_InductTermi_OIT,hAPP(hAPP(c_Lambda_Olift,v_ta____),c_HOL_Ozero__class_Ozero(tc_nat)))),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_CHAINED_0) ).
fof(f742,negated_conjecture,
~ c_List_Olistsp(c_InductTermi_OIT,c_List_Olist_OCons(hAPP(hAPP(c_Lambda_Olift,v_ta____),c_HOL_Ozero__class_Ozero(tc_nat)),c_List_Olist_ONil(tc_Lambda_OdB),tc_Lambda_OdB),tc_Lambda_OdB),
file('/export/starexec/sandbox2/benchmark/theBenchmark.p',cls_conjecture_0) ).
tcf(c_839,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] :
( ~ hBOOL(hAPP(X0,X3))
| ~ c_in(X3,c_List_Oset(X1,X2),X2)
| ( c_List_Ofilter(X0,X1,X2) != c_List_Olist_ONil(X2) ) ),
inference(cnf_transformation,[],[f181]) ).
tcf(c_924,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] :
( c_in(X0,c_List_Oset(X2,X3),X3)
| ( X0 = X1 )
| ~ c_in(X0,c_List_Oset(c_List_Olist_OCons(X1,X2,X3),X3),X3) ),
inference(cnf_transformation,[],[f283]) ).
tcf(c_939,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] :
( hBOOL(hAPP(X1,X0))
| ~ c_in(X0,c_List_Oset(c_List_OtakeWhile(X1,X2,X3),X3),X3) ),
inference(cnf_transformation,[],[f301]) ).
tcf(c_981,plain,
! [X0: $i,X1: $i,X2: $i] :
( c_List_Olistsp(X0,X1,X2)
| c_in(c_List_Osko__List__Xin__listsp__conv__set__1__1(X0,X1,X2),c_List_Oset(X1,X2),X2) ),
inference(cnf_transformation,[],[f346]) ).
tcf(c_1042,plain,
! [X0: $i,X1: $i] : c_List_OtakeWhile(X0,c_List_Olist_ONil(X1),X1) = c_List_Olist_ONil(X1),
inference(cnf_transformation,[],[f425]) ).
tcf(c_1049,plain,
! [X0: $i,X1: $i] : c_List_Osplice(X0,c_List_Olist_ONil(X1),X1) = X0,
inference(cnf_transformation,[],[f437]) ).
tcf(c_1050,plain,
! [X0: $i,X1: $i] : c_List_Osplice(c_List_Olist_ONil(X0),X1,X0) = X1,
inference(cnf_transformation,[],[f438]) ).
tcf(c_1134,plain,
! [X0: $i,X1: $i,X2: $i] : c_List_Olist__update(X0,X1,c_List_Onth(X0,X1,X2),X2) = X0,
inference(cnf_transformation,[],[f553]) ).
tcf(c_1176,plain,
! [X0: $i,X1: $i] : c_List_Ofilter(X0,c_List_Olist_ONil(X1),X1) = c_List_Olist_ONil(X1),
inference(cnf_transformation,[],[f606]) ).
tcf(c_1200,plain,
! [X0: $i,X1: $i,X2: $i] :
( c_List_Olistsp(X0,X1,X2)
| ~ hBOOL(hAPP(X0,c_List_Osko__List__Xin__listsp__conv__set__1__1(X0,X1,X2))) ),
inference(cnf_transformation,[],[f638]) ).
tcf(c_1218,plain,
! [X0: $i,X1: $i,X2: $i] : c_List_Onth(c_List_Olist_OCons(X0,X1,X2),c_HOL_Ozero__class_Ozero(tc_nat),X2) = X0,
inference(cnf_transformation,[],[f665]) ).
tcf(c_1220,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : c_List_Olist__update(c_List_Olist_OCons(X0,X1,X2),c_HOL_Ozero__class_Ozero(tc_nat),X3,X2) = c_List_Olist_OCons(X3,X1,X2),
inference(cnf_transformation,[],[f669]) ).
tcf(c_1268,plain,
hBOOL(hAPP(c_InductTermi_OIT,hAPP(hAPP(c_Lambda_Olift,v_ta____),c_HOL_Ozero__class_Ozero(tc_nat)))),
inference(cnf_transformation,[],[f741]) ).
tcf(c_1269,negated_conjecture,
~ c_List_Olistsp(c_InductTermi_OIT,c_List_Olist_OCons(hAPP(hAPP(c_Lambda_Olift,v_ta____),c_HOL_Ozero__class_Ozero(tc_nat)),c_List_Olist_ONil(tc_Lambda_OdB),tc_Lambda_OdB),tc_Lambda_OdB),
inference(cnf_transformation,[],[f742]) ).
tcf(c_27180,definition,
iPr_def_10 = hAPP(c_Lambda_Olift,v_ta____),
introduced(definition,[new_symbols(definition,[iPr_def_10])],[]) ).
tcf(c_27181,definition,
iPr_def_11 = c_HOL_Ozero__class_Ozero(tc_nat),
introduced(definition,[new_symbols(definition,[iPr_def_11])],[]) ).
tcf(c_27182,definition,
iPr_def_12 = hAPP(iPr_def_10,iPr_def_11),
introduced(definition,[new_symbols(definition,[iPr_def_12])],[]) ).
tcf(c_27183,definition,
iPr_def_13 = c_List_Olist_ONil(tc_Lambda_OdB),
introduced(definition,[new_symbols(definition,[iPr_def_13])],[]) ).
tcf(c_27184,definition,
iPr_def_14 = c_List_Olist_OCons(iPr_def_12,iPr_def_13,tc_Lambda_OdB),
introduced(definition,[new_symbols(definition,[iPr_def_14])],[]) ).
tcf(c_27185,negated_conjecture,
~ c_List_Olistsp(c_InductTermi_OIT,iPr_def_14,tc_Lambda_OdB),
inference(demodulation,[status(thm)],[c_1269,c_27183,c_27181,c_27180,c_27182,c_27184]) ).
tcf(c_35351,plain,
! [X0: $i] : c_List_Osplice(X0,iPr_def_13,tc_Lambda_OdB) = X0,
inference(superposition,[status(thm)],[c_27183,c_1049]) ).
tcf(c_35355,plain,
c_List_Olist_ONil(tc_Lambda_OdB) = iPr_def_13,
inference(superposition,[status(thm)],[c_1050,c_35351]) ).
tcf(c_35402,plain,
! [X0: $i] : c_List_OtakeWhile(X0,iPr_def_13,tc_Lambda_OdB) = iPr_def_13,
inference(superposition,[status(thm)],[c_35355,c_1042]) ).
tcf(c_35491,plain,
! [X0: $i] : c_List_Ofilter(X0,iPr_def_13,tc_Lambda_OdB) = iPr_def_13,
inference(superposition,[status(thm)],[c_35355,c_1176]) ).
tcf(c_37794,plain,
! [X0: $i,X1: $i] :
( hBOOL(hAPP(X1,X0))
| ~ c_in(X0,c_List_Oset(iPr_def_13,tc_Lambda_OdB),tc_Lambda_OdB) ),
inference(superposition,[status(thm)],[c_35402,c_939]) ).
tcf(c_85388,plain,
! [X0: $i,X1: $i] :
( ~ hBOOL(hAPP(X1,X0))
| ~ c_in(X0,c_List_Oset(iPr_def_13,tc_Lambda_OdB),tc_Lambda_OdB)
| ( c_List_Olist_ONil(tc_Lambda_OdB) != iPr_def_13 ) ),
inference(superposition,[status(thm)],[c_35491,c_839]) ).
tcf(c_85391,plain,
! [X0: $i,X1: $i] :
( ~ hBOOL(hAPP(X1,X0))
| ~ c_in(X0,c_List_Oset(iPr_def_13,tc_Lambda_OdB),tc_Lambda_OdB) ),
inference(ground_joinability,[status(thm)],[c_85388,c_35355]) ).
tcf(c_86732,plain,
! [X0: $i] : ~ c_in(X0,c_List_Oset(iPr_def_13,tc_Lambda_OdB),tc_Lambda_OdB),
inference(global_subsumption_just,[status(thm)],[c_85391,c_37794,c_85391]) ).
tcf(c_182002,plain,
! [X0: $i] : c_List_Osplice(X0,iPr_def_13,tc_Lambda_OdB) = X0,
inference(superposition,[status(thm)],[c_27183,c_1049]) ).
tcf(c_182005,plain,
c_List_Olist_ONil(tc_Lambda_OdB) = iPr_def_13,
inference(superposition,[status(thm)],[c_1050,c_182002]) ).
tcf(c_182049,plain,
! [X0: $i] : c_List_OtakeWhile(X0,iPr_def_13,tc_Lambda_OdB) = iPr_def_13,
inference(superposition,[status(thm)],[c_182005,c_1042]) ).
tcf(c_182147,plain,
hBOOL(hAPP(c_InductTermi_OIT,iPr_def_12)),
inference(light_normalisation,[status(thm)],[c_1268,c_27180,c_27181,c_27182]) ).
tcf(c_182461,plain,
! [X0: $i,X1: $i,X2: $i] : c_List_Onth(c_List_Olist_OCons(X0,X1,X2),iPr_def_11,X2) = X0,
inference(light_normalisation,[status(thm)],[c_1218,c_27181]) ).
tcf(c_182462,plain,
c_List_Onth(iPr_def_14,iPr_def_11,tc_Lambda_OdB) = iPr_def_12,
inference(superposition,[status(thm)],[c_27184,c_182461]) ).
tcf(c_182499,plain,
c_List_Olist__update(iPr_def_14,iPr_def_11,iPr_def_12,tc_Lambda_OdB) = iPr_def_14,
inference(superposition,[status(thm)],[c_182462,c_1134]) ).
tcf(c_184230,plain,
! [X0: $i,X1: $i] :
( hBOOL(hAPP(X1,X0))
| ~ c_in(X0,c_List_Oset(iPr_def_13,tc_Lambda_OdB),tc_Lambda_OdB) ),
inference(superposition,[status(thm)],[c_182049,c_939]) ).
tcf(c_184280,plain,
! [X0: $i] : ~ c_in(X0,c_List_Oset(iPr_def_13,tc_Lambda_OdB),tc_Lambda_OdB),
inference(global_subsumption_just,[status(thm)],[c_184230,c_86732]) ).
tcf(c_190976,plain,
! [X0: $i,X1: $i,X2: $i,X3: $i] : c_List_Olist__update(c_List_Olist_OCons(X0,X1,X2),iPr_def_11,X3,X2) = c_List_Olist_OCons(X3,X1,X2),
inference(light_normalisation,[status(thm)],[c_1220,c_27181]) ).
tcf(c_190978,plain,
! [X0: $i] : c_List_Olist__update(iPr_def_14,iPr_def_11,X0,tc_Lambda_OdB) = c_List_Olist_OCons(X0,iPr_def_13,tc_Lambda_OdB),
inference(superposition,[status(thm)],[c_27184,c_190976]) ).
tcf(c_190983,plain,
c_List_Olist_OCons(iPr_def_12,iPr_def_13,tc_Lambda_OdB) = iPr_def_14,
inference(demodulation,[status(thm)],[c_182499,c_190978]) ).
tcf(c_219680,plain,
! [X0: $i] :
( c_in(X0,c_List_Oset(iPr_def_13,tc_Lambda_OdB),tc_Lambda_OdB)
| ( X0 = iPr_def_12 )
| ~ c_in(X0,c_List_Oset(iPr_def_14,tc_Lambda_OdB),tc_Lambda_OdB) ),
inference(superposition,[status(thm)],[c_190983,c_924]) ).
tcf(c_219682,plain,
! [X0: $i] :
( ( X0 = iPr_def_12 )
| ~ c_in(X0,c_List_Oset(iPr_def_14,tc_Lambda_OdB),tc_Lambda_OdB) ),
inference(forward_subsumption_resolution,[status(thm)],[c_219680,c_184280]) ).
tcf(c_219936,plain,
! [X0: $i] :
( c_List_Olistsp(X0,iPr_def_14,tc_Lambda_OdB)
| ( c_List_Osko__List__Xin__listsp__conv__set__1__1(X0,iPr_def_14,tc_Lambda_OdB) = iPr_def_12 ) ),
inference(superposition,[status(thm)],[c_981,c_219682]) ).
tcf(c_219967,plain,
c_List_Osko__List__Xin__listsp__conv__set__1__1(c_InductTermi_OIT,iPr_def_14,tc_Lambda_OdB) = iPr_def_12,
inference(superposition,[status(thm)],[c_219936,c_27185]) ).
tcf(c_219973,plain,
( c_List_Olistsp(c_InductTermi_OIT,iPr_def_14,tc_Lambda_OdB)
| ~ hBOOL(hAPP(c_InductTermi_OIT,iPr_def_12)) ),
inference(superposition,[status(thm)],[c_219967,c_1200]) ).
tcf(c_219975,plain,
$false,
inference(forward_subsumption_resolution,[status(thm)],[c_219973,c_27185,c_182147]) ).
%------------------------------------------------------------------------------
%----ORIGINAL SYSTEM OUTPUT
% 0.00/0.03 % Problem : LCL847-1 : TPTP v9.3.1. Released v4.1.0.
% 0.00/0.04 % Command : run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.09/0.36 % Computer : n003.cluster.edu
% 0.09/0.36 % Model : x86_64 x86_64
% 0.09/0.36 % CPU : Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
% 0.09/0.36 % Memory : 8046.5625MB
% 0.09/0.36 % OS : Linux 6.8.0-71-generic
% 0.09/0.36 % CPULimit : 300
% 0.09/0.36 % WCLimit : 300
% 0.09/0.36 % DateTime : Thu Sep 24 00:38:21 UTC 2026
% 0.09/0.37 % CPUTime :
% 0.09/0.37 Running run_iprover 300 /export/starexec/sandbox2/benchmark/theBenchmark.p THM
% 0.09/0.40 Running first-order theorem proving
% 0.09/0.40 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
% 0.09/0.42
% 0.09/0.42 % ======== iProver multi-core TPTP/SMT =========
% 0.09/0.42
% 0.09/0.42 % Detected problem language: tptp
% 0.09/0.43 % Proving...
% 59.75/14.91 % SZS status Started for theBenchmark.p
% 59.75/14.91 % SZS status Unsatisfiable for theBenchmark.p
% 59.75/14.91
% 59.75/14.91 %---------------- iProver v3.9.4 (pre CASC 2026/SMT-COMP 2026) ----------------%
% 59.75/14.91
% 59.75/14.91 % ------ iProver source info
% 59.75/14.91
% 59.75/14.91 % git: date: 2026-07-19 20:42:38 +0200
% 59.75/14.91 % git: sha1: 804e7d636a263075307957e923b7a22a4035de61
% 59.75/14.91 % git: non_committed_changes: false
% 59.75/14.91
% 59.75/14.91 % ------ Parsing...% successful
% 59.75/14.91
% 59.75/14.91
% 59.75/14.91 % ------ Clausification by vclausify_rel & Parsing by iProver...%
% 59.75/14.91
% 59.75/14.91 % ------ Preprocessing... sup_sim: 16 sf_s rm: 7 0s sf_e pe_s pe:1:0s pe:2:0s pe:4:0s pe:8:0s pe:16:0s pe_e sup_sim: 5 sf_s rm: 25 0s sf_e pe_s pe_e sup_sim: 0 sf_s rm: 25 0s sf_e pe_s pe_e sup_sim: 0 sf_s rm: 25 0s sf_e pe_s pe_e %
% 59.75/14.91
% 59.75/14.91 % ------ Preprocessing... gs_s sp: 0 0s gs_e snvd_s sp: 0 0s snvd_e %
% 59.75/14.91
% 59.75/14.91 % ------ Preprocessing... sf_s rm: 1 0s sf_e sf_s rm: 0 0s sf_e
% 59.75/14.91 % ------ Proving...
% 59.75/14.91 % ------ Problem Properties
% 59.75/14.91
% 59.75/14.91 %
% 59.75/14.91 % clauses 516
% 59.75/14.91 % conjectures 1
% 59.75/14.91 % EPR 46
% 59.75/14.91 % Horn 439
% 59.75/14.91 % unary 173
% 59.75/14.91 % binary 230
% 59.75/14.91 % lits 1004
% 59.75/14.91 % lits eq 385
% 59.75/14.91 % fd_pure 0
% 59.75/14.91 % fd_pseudo 0
% 59.75/14.91 % fd_cond 11
% 59.75/14.91 % fd_pseudo_cond 61
% 59.75/14.91 % AC symbols 0
% 59.75/14.91
% 59.75/14.91 % ------ Schedule dynamic 5 is on
% 59.75/14.91
% 59.75/14.91 % ------ Input Options "--resolution_flag false --inst_lit_sel_side none" Time Limit: 10.
% 59.75/14.91
% 59.75/14.91
% 59.75/14.91 % ------
% 59.75/14.91 % Current options:
% 59.75/14.91 % ------
% 59.75/14.91
% 59.75/14.91
% 59.75/14.91 %
% 59.75/14.91
% 59.75/14.91 % ------ Proving...
% 59.75/14.91 % Proof_search_loop: time out after: 3548 full_loop iterations
% 59.75/14.91
% 59.75/14.91 % ------ Input Options"1. --res_lit_sel adaptive --res_lit_sel_side num_symb" Time Limit: 15.
% 59.75/14.91
% 59.75/14.91
% 59.75/14.91 % ------
% 59.75/14.91 % Current options:
% 59.75/14.91 % ------
% 59.75/14.91
% 59.75/14.91
% 59.75/14.91 %
% 59.75/14.91
% 59.75/14.91 % ------ Proving...
% 59.75/14.91 %
% 59.75/14.91
% 59.75/14.91 % SZS status Unsatisfiable for theBenchmark.p
% 59.75/14.91
% 59.75/14.91 % SZS output start CNFRefutation for theBenchmark.p
% See solution above
% 59.75/14.91
% 59.75/14.91
%------------------------------------------------------------------------------