Welcome to Sherpa, Daniel Reichelt on ip3-cpu5.phyip3.dur.ac.uk. Initialization of framework underway ... Local time: Thu Apr 24 15:14:29 2025 Seed mode: '*' Memory limit: 502.838 GB Seed: 1123 ┌──────────────────────────────────────────────────────────────────────────────┐ │  ._ │ │  .-#. │ │  .--+@. . │ │  .----@@. +#- │ │  .-----+@@. +**@- SHERPA v3.1.x (Erebus) │ │  :- .-------@@@+***#@- │ │  :=#* .--------+@+*****@@- Monte Carlo event generator │ │  :===@* .----------+******#@@- │ │  :====#@*----------+********@@@- https://sherpa-team.gitlab.io │ │  :======@@*--------+*********#@@@- │ │ │ │ Authors: Enrico Bothmann, Lois Flower, Christian Gutschow, │ │ Stefan Hoeche, Mareen Hoppe, Joshua Isaacson, │ │ Max Knobbe, Frank Krauss, Peter Meinzinger, │ │ Davide Napoletano, Alan Price, Daniel Reichelt, │ │ Marek Schoenherr, Steffen Schumann, Frank Siegert │ │ Former Authors: Gurpreet Singh Chahal, Timo Fischer, Tanju Gleisberg, │ │ Hendrik Hoeth, Johannes Krause, Silvan Kuttimalai, │ │ Ralf Kuhn, Thomas Laubrich, Sebastian Liebschner, │ │ Andreas Schaelicke, Holger Schulz, Jan Winter │ │ │ │ Users are kindly asked to cite JHEP 12 (2024) 156. │ │ │ │ This program uses a lot of genuine and original research work by others. │ │ Users are encouraged to also cite the various original publications. │ │ │ └──────────────────────────────────────────────────────────────────────────────┘ WARNING: You are using an unsupported development branch. Git branch: fix-loop-mur-dependence Revision: 90f4b940a9567813fb3c9cea3c411e2907920ee4. Initializing hadron particle information ... Initializing beam spectra ... Type: Collider Setup Beam 1: P+ (enabled = 0, momentum = (6800,0,0,6800)) Beam 2: P+ (enabled = 0, momentum = (6800,0,0,-6800)) Initializing PDFs ... Hard scattering: PDF4LHC21_40_pdfas + PDF4LHC21_40_pdfas MPI: PDF4LHC21_40_pdfas + PDF4LHC21_40_pdfas Fixed electroweak parameters Input scheme: Gmu scheme, input: GF, m_W, m_Z, m_h, widths Ren. scheme: Gmu Parameters: sin^2(\theta_W) = 0.223043 - 0.00110541 i vev = 246.22 Set \alpha according to EW scheme 1/\alpha(0) = 137.036 1/\alpha(def) = 132.12 Particle data: ┌─────────────────────────────────────────────────────────────────────────────────────────┐ │ Name Kf-code Mass Width Stable Massive Active Yukawa │ ├─────────────────────────────────────────────────────────────────────────────────────────┤ │ d 1 0.01 0 1 0 1 0 │ │ u 2 0.005 0 1 0 1 0 │ │ s 3 0.2 0 1 0 1 0 │ │ c 4 1.42 0 1 0 1 0 │ │ b 5 4.92 0 1 0 1 0 │ │ t 6 172.5 1.32 0 1 1 172.5 │ │ e- 11 0.000511 0 1 0 1 0 │ │ ve 12 0 0 1 0 1 0 │ │ mu- 13 0.105 0 1 0 1 0 │ │ vmu 14 0 0 1 0 1 0 │ │ tau- 15 1.777 2.26735e-12 0 0 1 0 │ │ vtau 16 0 0 1 0 1 0 │ │ G 21 0 0 1 0 1 0 │ │ P 22 0 0 1 0 1 0 │ │ Z 23 91.1876 2.4952 0 1 1 91.1876 │ │ W+ 24 80.379 2.085 0 1 1 80.379 │ │ h0 25 125 0 0 1 1 125 │ │ Instanton 999 0 0 0 0 1 0 │ └─────────────────────────────────────────────────────────────────────────────────────────┘ Particle containers: ┌─────────────────────────────────────────────────────────────────────────────────────────┐ │ Name Kf-code Constituents │ ├─────────────────────────────────────────────────────────────────────────────────────────┤ │ l 90 e-, e+, mu-, mu+, tau-, tau+ │ │ v 91 ve, veb, vmu, vmub, vtau, vtaub │ │ f 92 d, db, u, ub, s, sb, c, cb, b, bb, e-, e+, mu-, mu+, │ │ tau-, tau+, ve, veb, vmu, vmub, vtau, vtaub │ │ j 93 d, db, u, ub, s, sb, c, cb, b, bb, G │ │ Q 94 d, db, u, ub, s, sb, c, cb, b, bb │ │ ewj 98 d, db, u, ub, s, sb, c, cb, b, bb, G, P │ └─────────────────────────────────────────────────────────────────────────────────────────┘ Reading in parameters for P+ yields: Primordial k_T Form = None Primordial k_T Recoil = Beam_vs_Shower Matter Form = Single_Gaussian BEAM_SPECTATOR_KTEXPO = 5 BEAM_SPECTATOR_KTMAX = 1 BEAM_SPECTATOR_MEAN = 0 BEAM_SPECTATOR_Q2 = 0.77 BEAM_SPECTATOR_SIGMA = 0.25 ENERGY_SCALING_EXPO = 0.08 MATTER_FRACTION_1 = 1 MATTER_RADIUS_1 = 0.86 MATTER_RADIUS_2 = 0 REFERENCE_ENERGY = 7000 SHOWER_INITIATOR_KTEXPO = 5.12 SHOWER_INITIATOR_KTMAX = 2.7 SHOWER_INITIATOR_MEAN = 1 SHOWER_INITIATOR_Q2 = 0.77 SHOWER_INITIATOR_SIGMA = 1.1 Initializing primordial transverse momentum ... Initializing remnants ... Hard process: P+ (Hadron) + P+ (Hadron) Initializing showers ... Initializing matrix elements for the hard processes ... Initializing Comix ... Massive PS flavours for Comix: (c,cb,b,bb,e-,e+,mu-,mu+,tau-,tau+) Massive PS flavours for Amegic: (c,cb,b,bb,e-,e+,mu-,mu+,tau-,tau+) Massive PS flavours for Internal: (c,cb,b,bb,e-,e+,mu-,mu+,tau-,tau+) Building processes (3 ME generators, 1 process blocks) ... Setting up processes ME_Generators::LoadGenerator(): Try loading 'OpenLoops' from 'libSherpaOpenLoops'. Initialising OpenLoops generator from /mt/home/dreichelt/hepsoftware/src/OpenLoops/. #################################################################### # ___ ___ ____ _ _ __ __ ___ __ ___ # # / \ |__| |__ |\ | | / \ / \ |__| /__ __/ # # \___/ | |___ | \| |__ \__/ \__/ | __/ /__ # # You are using OpenLoops 2 to evaluate loop amplitudes # # F. Buccioni, J.-N. Lang, J. Lindert, P. Maierhoefer, # # S. Pozzorini, M. Zoller, H. Zhang # # Eur.Phys.J. C79 (2019) no.10, 866 # # arXiv:1907.13071 # #################################################################### ......................................................................................................................................................................................................................................................................................................................................................... done (261 MB, 12s/12s) Performing tests ............ Amplitude::GaugeTest(): Large deviation { 8.07174270839e-20 vs 8.07174270836e-20 => 4.03899136359e-12 } ... Amplitude::GaugeTest(): Large deviation { 1.18183327881e-21 vs 1.18183327881e-21 => 2.04836148043e-12 } ...... Amplitude::GaugeTest(): Large deviation { 6.73311230075e-23 vs 6.73311230077e-23 => -2.5245361357e-12 } ..... Amplitude::GaugeTest(): Large deviation { 7.02128536691e-20 vs 7.02128536693e-20 => -2.94597679584e-12 } ....... Amplitude::GaugeTest(): Large deviation { 1.14032296867e-21 vs 1.14032296867e-21 => -2.132627408e-12 } .. Amplitude::GaugeTest(): Large deviation { 5.78558747184e-23 vs 5.78558747183e-23 => 2.25064411552e-12 } ......WARNING: last allowed error message from 'GaugeTest'  Amplitude::GaugeTest(): Large deviation { 1.38192416845e-23 vs 1.38192416846e-23 => -4.64051019833e-12 } ............................................................................................... done (261 MB, 0s/0s) Initializing scales........................................................................ done (265 MB, 0s/0s) Initializing the beam remnants ... Multiple interactions initialized id = 2, name = None, type = 0 Underlying event/multiple interactions initialized MI[2]: on = 0 (type = 0, None) Initialized fragmentation Initialized soft photons Initialized on-the-fly reweighting Read in channels from directory: Results/Amegic/MC_2_3__j__j__h0__j__j__QCD(BVI) Calculating xs for '2_3__j__j__h0__j__j__QCD(BVI)' (Amegic+OpenLoops) ... 2_3__j__j__h0__j__j__QCD(BVI) : 5.96100664476 pb +- ( 0.0634172095454 pb = 1.06386745268 % )  exp. eff: 0.104225558705 % Read in channels from directory: Results/Comix/MC_2_4__j__j__h0__j__j__j__QCD(RS) Calculating xs for '2_4__j__j__h0__j__j__j__QCD(RS)' (Comix) ... 2_4__j__j__h0__j__j__j__QCD(RS) : 0.156547087194 pb +- ( 0.0550446800857 pb = 35.1617401973 % )  exp. eff: 0.000272710578471 % reduce max for 2_3__j__j__h0__j__j__QCD(BVI) to 0.39657075534 ( eps = 0.001 -> exp. eff 0.00262817056735 ) reduce max for 2_4__j__j__h0__j__j__j__QCD(RS) to 0.456062791903 ( eps = 0.001 -> exp. eff 5.97967173191e-06 ) ┌──────────────────────────────────────────────────────────────────────────────┐ │ SHERPA generates events with the following structure: │ │ Event generation Weighted │ │ Perturbative Signal_Processes │ │ Perturbative Minimum_Bias: None │ │ Perturbative Hard_Decays │ │ Perturbative Jet_Evolution:CSS │ │ Perturbative Lepton_FS_QED_Corrections:Photons │ │ Perturbative Multiple_Interactions: None │ │ Hadronization Beam_Remnants:Parametrised │ │ Hadronization Hadronization: None │ │ Hadronization Hadron_Decays │ │ Userhook None │ │ Analysis Rivet │ │ Reweighting 6 variations │ └──────────────────────────────────────────────────────────────────────────────┘ Event 1 ( 1s elapsed / 16d 15h 59m 58s left ) -> ETA: Sun May 11 07:14 XS = 0.900966277216 pb +- ( 0.900966277216 pb = 100 % ) Event 2 ( 1s elapsed / 8d 9h 23m 18s left ) -> ETA: Sat May 03 00:38 XS = 0.450362842233 pb +- ( 0.450603434984 pb = 100 % ) Event 3 ( 1s elapsed / 5d 14h 15m 31s left ) -> ETA: Wed Apr 30 05:30 XS = 0.509233460237 pb +- ( 0.266733765274 pb = 52 % ) Event 4 ( 1s elapsed / 4d 4h 41m 38s left ) -> ETA: Mon Apr 28 19:56 XS = 0.381907872845 pb +- ( 0.227563740462 pb = 59 % ) Event 5 ( 1s elapsed / 3d 8h 33m 18s left ) -> ETA: Sun Apr 27 23:48 XS = 0.30158265779 pb +- ( 0.193709302197 pb = 64 % ) Event 6 ( 1s elapsed / 2d 19h 35m 31s left ) -> ETA: Sun Apr 27 10:50 XS = 0.215416185419 pb +- ( 0.144782056403 pb = 67 % ) Event 7 ( 1s elapsed / 2d 9h 56m 9s left ) -> ETA: Sun Apr 27 01:10 XS = 0.190110130474 pb +- ( 0.127913170976 pb = 67 % ) Event 8 ( 1s elapsed / 2d 3h 2m 28s left ) -> ETA: Sat Apr 26 18:17 XS = 0.188465427964 pb +- ( 0.112820802151 pb = 59 % ) Event 9 ( 1s elapsed / 1d 21h 22m 11s left ) -> ETA: Sat Apr 26 12:36 XS = 0.154199020749 pb +- ( 0.0941264451532 pb = 61 % ) Event 10 ( 1s elapsed / 1d 17h 6m 38s left ) -> ETA: Sat Apr 26 08:21 XS = 0.0517004556304 pb +- ( 0.133750185978 pb = 258 % ) Event 20 ( 1s elapsed / 21h 6m 38s left ) -> ETA: Fri Apr 25 12:21 XS = 0.499505404971 pb +- ( 0.355388610347 pb = 71 % ) Event 30 ( 1s elapsed / 14h 21m 5s left ) -> ETA: Fri Apr 25 05:35 XS = 0.31644242761 pb +- ( 0.220342333644 pb = 69 % ) Event 40 ( 1s elapsed / 10h 58m 18s left ) -> ETA: Fri Apr 25 02:13 XS = 0.316969855033 pb +- ( 0.180286146819 pb = 56 % ) Event 50 ( 1s elapsed / 8h 56m 38s left ) -> ETA: Fri Apr 25 00:11 XS = 1.87931910316 pb +- ( 1.62782576798 pb = 86 % ) Event 60 ( 1s elapsed / 7h 41m 5s left ) -> ETA: Thu Apr 24 22:55 XS = 1.57933194778 pb +- ( 1.37299218859 pb = 86 % ) Event 70 ( 1s elapsed / 6h 44m 44s left ) -> ETA: Thu Apr 24 21:59 XS = 1.4184911441 pb +- ( 1.17285396908 pb = 82 % ) Event 80 ( 1s elapsed / 6h 2m 28s left ) -> ETA: Thu Apr 24 21:17 XS = 5.92877234681 pb +- ( 4.61503583215 pb = 77 % ) Event 90 ( 1s elapsed / 5h 29m 35s left ) -> ETA: Thu Apr 24 20:44 XS = 6.67326553411 pb +- ( 4.35680380894 pb = 65 % ) Event 100 ( 1s elapsed / 5h 3m 18s left ) -> ETA: Thu Apr 24 20:18 XS = 6.73505124415 pb +- ( 3.99182883876 pb = 59 % ) Event 200 ( 2s elapsed / 3h 4m 7s left ) -> ETA: Thu Apr 24 18:18 XS = 5.91927884385 pb +- ( 2.25528597285 pb = 38 % ) Event 300 ( 2s elapsed / 2h 24m 57s left ) -> ETA: Thu Apr 24 17:39 XS = 6.05016378445 pb +- ( 2.5636087996 pb = 42 % ) Event 400 ( 3s elapsed / 2h 5m 21s left ) -> ETA: Thu Apr 24 17:20 XS = 6.90098208555 pb +- ( 2.51146542334 pb = 36 % ) Event 500 ( 3s elapsed / 1h 53m 36s left ) -> ETA: Thu Apr 24 17:08 XS = 8.53383132654 pb +- ( 2.63086421848 pb = 30 % ) Event 600 ( 3s elapsed / 1h 45m 29s left ) -> ETA: Thu Apr 24 17:00 XS = 7.5003772787 pb +- ( 2.2466399155 pb = 29 % ) Event 700 ( 4s elapsed / 1h 39m 55s left ) -> ETA: Thu Apr 24 16:54 XS = 6.5828910253 pb +- ( 1.93456123286 pb = 29 % ) Event 800 ( 4s elapsed / 1h 35m 20s left ) -> ETA: Thu Apr 24 16:50 XS = 6.12551924611 pb +- ( 1.71805342314 pb = 28 % ) Event 900 ( 4s elapsed / 1h 31m 57s left ) -> ETA: Thu Apr 24 16:46 XS = 6.53434493162 pb +- ( 1.66067925437 pb = 25 % ) Event 1000 ( 5s elapsed / 1h 28m 54s left ) -> ETA: Thu Apr 24 16:43 XS = 6.19765153969 pb +- ( 1.50777709929 pb = 24 % ) Event 2000 ( 9s elapsed / 1h 16m 35s left ) -> ETA: Thu Apr 24 16:31 XS = 7.53859746487 pb +- ( 1.89880800745 pb = 25 % ) Event 3000 ( 13s elapsed / 1h 12m 56s left ) -> ETA: Thu Apr 24 16:27 XS = 6.8448928957 pb +- ( 1.40425761375 pb = 20 % ) Event 4000 ( 17s elapsed / 1h 11m 15s left ) -> ETA: Thu Apr 24 16:26 XS = 8.35514632562 pb +- ( 2.45639281258 pb = 29 % ) Event 5000 ( 21s elapsed / 1h 10m 24s left ) -> ETA: Thu Apr 24 16:25 XS = 7.92296020933 pb +- ( 1.99973216655 pb = 25 % ) Event 6000 ( 25s elapsed / 1h 9m 38s left ) -> ETA: Thu Apr 24 16:24 XS = 8.01132780443 pb +- ( 1.776079032 pb = 22 % ) Event 7000 ( 29s elapsed / 1h 9m 3s left ) -> ETA: Thu Apr 24 16:24 XS = 7.58652435402 pb +- ( 1.56541292158 pb = 20 % ) Event 8000 ( 33s elapsed / 1h 8m 34s left ) -> ETA: Thu Apr 24 16:23 XS = 7.99038631527 pb +- ( 1.529103817 pb = 19 % ) Event 9000 ( 37s elapsed / 1h 8m 15s left ) -> ETA: Thu Apr 24 16:23 XS = 8.45696357038 pb +- ( 1.62275899117 pb = 19 % ) Event 10000 ( 41s elapsed / 1h 7m 44s left ) -> ETA: Thu Apr 24 16:23 XS = 8.41695323711 pb +- ( 1.47668193532 pb = 17 % ) Event 20000 ( 1m 20s elapsed / 1h 5m 58s left ) -> ETA: Thu Apr 24 16:22 XS = 6.79416086663 pb +- ( 0.846257240938 pb = 12 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 30000 ( 2m elapsed / 1h 4m 45s left ) -> ETA: Thu Apr 24 16:21 XS = 6.65461839498 pb +- ( 0.752096393934 pb = 11 % ) Event 40000 ( 2m 40s elapsed / 1h 4m left ) -> ETA: Thu Apr 24 16:21 XS = 6.79350092241 pb +- ( 0.782275022423 pb = 11 % ) Event 50000 ( 3m 19s elapsed / 1h 3m 18s left ) -> ETA: Thu Apr 24 16:21 XS = 6.55778008109 pb +- ( 0.66663417804 pb = 10 % ) Event 60000 ( 4m elapsed / 1h 2m 45s left ) -> ETA: Thu Apr 24 16:21 XS = 6.63051720407 pb +- ( 0.597925355024 pb = 9 % ) Event 70000 ( 4m 40s elapsed / 1h 2m 11s left ) -> ETA: Thu Apr 24 16:21 XS = 6.97305005939 pb +- ( 0.547193521669 pb = 7 % ) Event 80000 ( 5m 21s elapsed / 1h 1m 32s left ) -> ETA: Thu Apr 24 16:21 XS = 7.07759953198 pb +- ( 0.493791915286 pb = 6 % ) Event 90000 ( 6m 1s elapsed / 1h 53s left ) -> ETA: Thu Apr 24 16:21 XS = 6.98766372216 pb +- ( 0.445510929127 pb = 6 % ) Event 100000 ( 6m 41s elapsed / 1h 12s left ) -> ETA: Thu Apr 24 16:21 XS = 6.84290752038 pb +- ( 0.408177366214 pb = 5 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 200000 ( 13m 25s elapsed / 53m 40s left ) -> ETA: Thu Apr 24 16:21 XS = 6.74379029453 pb +- ( 0.264170227167 pb = 3 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 300000 ( 20m 10s elapsed / 47m 4s left ) -> ETA: Thu Apr 24 16:21 XS = 6.38986516081 pb +- ( 0.221656388681 pb = 3 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 400000 ( 26m 57s elapsed / 40m 26s left ) -> ETA: Thu Apr 24 16:22 XS = 6.14545492975 pb +- ( 0.206233056171 pb = 3 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 500000 ( 33m 46s elapsed / 33m 46s left ) -> ETA: Thu Apr 24 16:22 XS = 5.86559555118 pb +- ( 0.284519259995 pb = 4 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 600000 ( 40m 30s elapsed / 27m left ) -> ETA: Thu Apr 24 16:22 XS = 5.89214180342 pb +- ( 0.246156485286 pb = 4 % ) Event 700000 ( 47m 9s elapsed / 20m 12s left ) -> ETA: Thu Apr 24 16:22  Memory usage increased by 18 MB, now 325 MB.  This might indicate a memory leak! Please monitor this process closely. XS = 5.82733146064 pb +- ( 0.21836715772 pb = 3 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 800000 ( 53m 44s elapsed / 13m 26s left ) -> ETA: Thu Apr 24 16:21 XS = 5.94395001759 pb +- ( 0.199893343648 pb = 3 % ) Event 900000 ( 1h 16s elapsed / 6m 41s left ) -> ETA: Thu Apr 24 16:21 XS = 6.05813004376 pb +- ( 0.182687625573 pb = 3 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 1000000 ( 4001 s total ) = 21596004.7391 evts/day Summarizing the run may take some time ... ┌────────────────────────────────────────────────────────────────────────────┐ │ Nominal or variation name XS [pb] RelDev AbsErr [pb] RelErr │ ├────────────────────────────────────────────────────────────────────────────┤ │ Nominal  6.00246 0 % 0.201316 3.35 % │ │ ME & PS: MUF=0.5  6.20216 3.32 % 0.271562 4.37 % │ │ ME & PS: MUF=2  6.06601 1.05 % 0.19943 3.28 % │ │ ME & PS: MUR=0.5  6.08036 1.29 % 0.244101 4.01 % │ │ ME & PS: MUR=0.5 MUF=0.5  6.1631 2.67 % 0.260926 4.23 % │ │ ME & PS: MUR=2  6.03673 0.57 % 0.180711 2.99 % │ │ ME & PS: MUR=2 MUF=2  6.08364 1.35 % 0.180669 2.96 % │ │ ME-only: MUF=0.5  5.93271 -1.16 % 0.202481 3.41 % │ │ ME-only: MUF=2  5.97349 -0.48 % 0.200587 3.35 % │ │ ME-only: MUR=0.5  5.96002 -0.7 % 0.224632 3.76 % │ │ ME-only: MUR=0.5 MUF=0.5  5.94815 -0.9 % 0.225233 3.78 % │ │ ME-only: MUR=2  5.93241 -1.16 % 0.183781 3.09 % │ │ ME-only: MUR=2 MUF=2  5.9568 -0.76 % 0.182566 3.06 % │ └────────────────────────────────────────────────────────────────────────────┘ Event generation statistics: Generated events: 1000000 New events: From "Beam_Remnants:Parametrised": 722 (1000731) -> 0 % From "Jet_Evolution:CSS": 2348 (1003079) -> 0.2 % Reweighting statistics: MCatNLO different PDF cut-off: 7237020 MCatNLO large PDF reweighting factor: 90218 MCatNLOvetoed large reweighting factor for parton: 194 different PDF cut-off: 26595016 large AlphaS reweighting factor: 2507037 large PDF reweighting factor: 1242552 vetoed large reweighting factor for parton: 18 Error messages from 'GaugeTest' exceeded frequency limit: 129/20 Perturbative Interface (Matrix Elements): momentum failures: 121 amplitude failures: 2227 WARNING: You are using an unsupported development branch. ┌──────────────────────────────────────────────────────────┐ │ Please cite the publications listed in 'References.tex'. │ └──────────────────────────────────────────────────────────┘ Time: 1h 6m 54s on Thu Apr 24 16:21:24 2025 (User: 1h 6m 9s, System: 3s, Children User: 0s, Children System: 0s)