Welcome to Sherpa, Daniel Reichelt on ip3-cpu1.phyip3.dur.ac.uk. Initialization of framework underway ... Local time: Thu Apr 24 15:16:26 2025 Seed mode: '*' Memory limit: 502.838 GB Seed: 1165 ┌──────────────────────────────────────────────────────────────────────────────┐ │  ._ │ │  .-#. │ │  .--+@. . │ │  .----@@. +#- │ │  .-----+@@. +**@- 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 (259 MB, 12s/12s) Performing tests .... Amplitude::GaugeTest(): Large deviation { 4.68349506542e-24 vs 4.68349506543e-24 => -2.11775041947e-12 } .. Amplitude::GaugeTest(): Large deviation { 1.05681411194e-20 vs 1.05681411195e-20 => -2.93365332027e-12 } ... Amplitude::GaugeTest(): Large deviation { 1.7734334395e-19 vs 1.77343343951e-19 => -8.36575253516e-12 } ... Amplitude::GaugeTest(): Large deviation { 9.81517582796e-21 vs 9.81517582794e-21 => 2.04747330201e-12 } ....... Amplitude::GaugeTest(): Large deviation { 9.79353566439e-23 vs 9.79353566441e-23 => -2.31648034088e-12 } . Amplitude::GaugeTest(): Large deviation { 6.43482268536e-25 vs 6.43482268548e-25 => -1.88803417345e-11 } .WARNING: last allowed error message from 'GaugeTest'  Amplitude::GaugeTest(): Large deviation { 7.82756037859e-23 vs 7.82756037857e-23 => 3.16813242307e-12 } ................................................................................................................... done (259 MB, 0s/0s) Initializing scales........................................................................ done (263 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 07:16 XS = 7.81193692498e-15 pb +- ( 7.81193692498e-15 pb = 100 % ) Event 2 ( 1s elapsed / 8d 7h 59m 58s left ) -> ETA: Fri May 02 23:16 XS = -2.84523285551e-07 pb +- ( 2.84523293363e-07 pb = -100 % ) Event 3 ( 1s elapsed / 5d 14h 15m 31s left ) -> ETA: Wed Apr 30 05:32 XS = 9.89605077186e-10 pb +- ( 3.29396588026e-07 pb = 33285 % ) Event 4 ( 1s elapsed / 4d 4h 41m 38s left ) -> ETA: Mon Apr 28 19:58 XS = 0.000201357954592 pb +- ( 0.000201357099701 pb = 99 % ) Event 5 ( 1s elapsed / 3d 9h 6m 38s left ) -> ETA: Mon Apr 28 00:23 XS = 0.000134273839709 pb +- ( 0.000134231087202 pb = 99 % ) Event 6 ( 1s elapsed / 2d 19h 35m 31s left ) -> ETA: Sun Apr 27 10:52 XS = 7.87365673882 pb +- ( 7.87352246579 pb = 99 % ) Event 7 ( 1s elapsed / 2d 10h 19m 58s left ) -> ETA: Sun Apr 27 01:36 XS = 6.85259982478 pb +- ( 6.89469536936 pb = 100 % ) Event 8 ( 1s elapsed / 2d 3h 2m 28s left ) -> ETA: Sat Apr 26 18:19 XS = 6.09119984434 pb +- ( 6.12803520284 pb = 100 % ) Event 9 ( 1s elapsed / 1d 21h 40m 42s left ) -> ETA: Sat Apr 26 12:57 XS = 5.4936701289 pb +- ( 5.51355548795 pb = 100 % ) Event 10 ( 1s elapsed / 1d 17h 6m 38s left ) -> ETA: Sat Apr 26 08:23 XS = 5.02322163958 pb +- ( 5.00933843083 pb = 99 % ) Event 20 ( 1s elapsed / 21h 14m 58s left ) -> ETA: Fri Apr 25 12:31 XS = 0.347991712834 pb +- ( 4.35319844997 pb = 1250 % ) Event 30 ( 1s elapsed / 14h 26m 38s left ) -> ETA: Fri Apr 25 05:43 XS = 0.0921240931959 pb +- ( 2.9317027467 pb = 3182 % ) Event 40 ( 1s elapsed / 11h 6m 38s left ) -> ETA: Fri Apr 25 02:23 XS = 0.0590214782308 pb +- ( 2.20774585868 pb = 3740 % ) Event 50 ( 1s elapsed / 9h 6m 38s left ) -> ETA: Fri Apr 25 00:23 XS = 1.49232903036 pb +- ( 2.20178238111 pb = 147 % ) Event 60 ( 1s elapsed / 7h 46m 38s left ) -> ETA: Thu Apr 24 23:03 XS = 7.46690902337 pb +- ( 6.28545496702 pb = 84 % ) Event 70 ( 1s elapsed / 6h 51m 52s left ) -> ETA: Thu Apr 24 22:08 XS = 6.41016016126 pb +- ( 5.28213144874 pb = 82 % ) Event 80 ( 1s elapsed / 6h 6m 38s left ) -> ETA: Thu Apr 24 21:23 XS = 6.02050940547 pb +- ( 4.61381152281 pb = 76 % ) Event 90 ( 1s elapsed / 5h 33m 18s left ) -> ETA: Thu Apr 24 20:49 XS = 5.33258424557 pb +- ( 4.09258473988 pb = 76 % ) Event 100 ( 1s elapsed / 5h 6m 38s left ) -> ETA: Thu Apr 24 20:23 XS = 6.02541592213 pb +- ( 3.84700670932 pb = 63 % ) Event 200 ( 2s elapsed / 3h 9m 57s left ) -> ETA: Thu Apr 24 18:26 XS = 3.51963002428 pb +- ( 1.96054781519 pb = 55 % ) Event 300 ( 2s elapsed / 2h 31m 3s left ) -> ETA: Thu Apr 24 17:47 XS = 3.65958584163 pb +- ( 1.40769508417 pb = 38 % ) Event 400 ( 3s elapsed / 2h 10m 46s left ) -> ETA: Thu Apr 24 17:27 XS = 3.23235193797 pb +- ( 1.09040047004 pb = 33 % ) Event 500 ( 3s elapsed / 1h 58m 16s left ) -> ETA: Thu Apr 24 17:14 XS = 3.71609789888 pb +- ( 1.26400149681 pb = 34 % ) Event 600 ( 3s elapsed / 1h 49m 56s left ) -> ETA: Thu Apr 24 17:06 XS = 3.94288765726 pb +- ( 1.13885803528 pb = 28 % ) Event 700 ( 4s elapsed / 1h 44m 12s left ) -> ETA: Thu Apr 24 17:00 XS = 3.91501030264 pb +- ( 0.999821787884 pb = 25 % ) Event 800 ( 4s elapsed / 1h 39m 55s left ) -> ETA: Thu Apr 24 16:56 XS = 5.60458485828 pb +- ( 1.53963927834 pb = 27 % ) Event 900 ( 5s elapsed / 1h 36m 23s left ) -> ETA: Thu Apr 24 16:53 XS = 5.37598113736 pb +- ( 1.39312349245 pb = 25 % ) Event 1000 ( 5s elapsed / 1h 34m 24s left ) -> ETA: Thu Apr 24 16:51 XS = 4.99718909011 pb +- ( 1.90966079804 pb = 38 % ) Event 2000 ( 9s elapsed / 1h 21m 5s left ) -> ETA: Thu Apr 24 16:37 XS = 4.78169619562 pb +- ( 1.15711033198 pb = 24 % ) Event 3000 ( 13s elapsed / 1h 17m 9s left ) -> ETA: Thu Apr 24 16:34 XS = 5.92559416042 pb +- ( 1.21511630995 pb = 20 % ) Event 4000 ( 18s elapsed / 1h 14m 59s left ) -> ETA: Thu Apr 24 16:31 XS = 3.88097507909 pb +- ( 1.85164163019 pb = 47 % ) Event 5000 ( 22s elapsed / 1h 13m 37s left ) -> ETA: Thu Apr 24 16:30 XS = 5.41619014626 pb +- ( 1.74584854591 pb = 32 % ) Event 6000 ( 26s elapsed / 1h 12m 53s left ) -> ETA: Thu Apr 24 16:29 XS = 5.3718062613 pb +- ( 1.46824068637 pb = 27 % ) Event 7000 ( 30s elapsed / 1h 12m 20s left ) -> ETA: Thu Apr 24 16:29 XS = 6.22150174109 pb +- ( 1.38114470255 pb = 22 % ) Event 8000 ( 34s elapsed / 1h 11m 56s left ) -> ETA: Thu Apr 24 16:29 XS = 6.91954322261 pb +- ( 1.35184959108 pb = 19 % ) Event 9000 ( 38s elapsed / 1h 11m 31s left ) -> ETA: Thu Apr 24 16:28 XS = 6.93819003792 pb +- ( 1.22573496256 pb = 17 % ) Event 10000 ( 43s elapsed / 1h 11m 3s left ) -> ETA: Thu Apr 24 16:28 XS = 6.42419541408 pb +- ( 1.12717449202 pb = 17 % ) Event 20000 ( 1m 25s elapsed / 1h 9m 26s left ) -> ETA: Thu Apr 24 16:27 XS = 5.85830710412 pb +- ( 0.767954241285 pb = 13 % ) Event 30000 ( 2m 7s elapsed / 1h 8m 26s left ) -> ETA: Thu Apr 24 16:27 XS = 5.8469630873 pb +- ( 0.604255349569 pb = 10 % ) Event 40000 ( 2m 48s elapsed / 1h 7m 34s left ) -> ETA: Thu Apr 24 16:27 XS = 5.76245180861 pb +- ( 0.508136006545 pb = 8 % ) Event 50000 ( 3m 31s elapsed / 1h 6m 49s left ) -> ETA: Thu Apr 24 16:27 XS = 5.60057370559 pb +- ( 0.561019087574 pb = 10 % ) Event 60000 ( 4m 13s elapsed / 1h 6m 4s left ) -> ETA: Thu Apr 24 16:26 XS = 5.1461721175 pb +- ( 0.799614732567 pb = 15 % ) Event 70000 ( 4m 54s elapsed / 1h 5m 19s left ) -> ETA: Thu Apr 24 16:26 XS = 5.28555670339 pb +- ( 0.696214690627 pb = 13 % ) Event 80000 ( 5m 36s elapsed / 1h 4m 33s left ) -> ETA: Thu Apr 24 16:26 XS = 5.36872925956 pb +- ( 0.682552126845 pb = 12 % ) Event 90000 ( 6m 18s elapsed / 1h 3m 50s left ) -> ETA: Thu Apr 24 16:26 XS = 5.56091261557 pb +- ( 0.619990771025 pb = 11 % ) Event 100000 ( 7m elapsed / 1h 3m 8s left ) -> ETA: Thu Apr 24 16:26 XS = 5.61278492968 pb +- ( 0.564683619045 pb = 10 % ) Event 200000 ( 14m 4s elapsed / 56m 18s left ) -> ETA: Thu Apr 24 16:27 XS = 5.82387887775 pb +- ( 0.355941783308 pb = 6 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 300000 ( 21m 12s elapsed / 49m 28s left ) -> ETA: Thu Apr 24 16:27 XS = 5.76009418902 pb +- ( 0.269526015562 pb = 4 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 400000 ( 28m 18s elapsed / 42m 28s left ) -> ETA: Thu Apr 24 16:27  Memory usage increased by 18 MB, now 321 MB.  This might indicate a memory leak! Please monitor this process closely. XS = 5.71222975527 pb +- ( 0.223898743705 pb = 3 % ) Event 500000 ( 35m 27s elapsed / 35m 27s left ) -> ETA: Thu Apr 24 16:27 XS = 5.82311618722 pb +- ( 0.194801109889 pb = 3 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 600000 ( 42m 26s elapsed / 28m 17s left ) -> ETA: Thu Apr 24 16:27 XS = 5.7897898914 pb +- ( 0.174806800431 pb = 3 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 700000 ( 49m 24s elapsed / 21m 10s left ) -> ETA: Thu Apr 24 16:27 XS = 5.90973139796 pb +- ( 0.176116513635 pb = 2 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 800000 ( 56m 22s elapsed / 14m 5s left ) -> ETA: Thu Apr 24 16:27 XS = 5.96844285179 pb +- ( 0.170337251223 pb = 2 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 900000 ( 1h 3m 14s elapsed / 7m 1s left ) -> ETA: Thu Apr 24 16:26 XS = 5.98938211709 pb +- ( 0.156156139615 pb = 2 % ) Event_Handler::GenerateStandardPerturbativeEvent:("Invalid weight w=nan. Rejecting event.") Event 1000000 ( 4188 s total ) = 20631308.4882 evts/day Summarizing the run may take some time ... ┌────────────────────────────────────────────────────────────────────────────┐ │ Nominal or variation name XS [pb] RelDev AbsErr [pb] RelErr │ ├────────────────────────────────────────────────────────────────────────────┤ │ Nominal  5.96065 0 % 0.147118 2.46 % │ │ ME & PS: MUF=0.5  6.12348 2.73 % 0.300207 4.9 % │ │ ME & PS: MUF=2  5.97859 0.3 % 0.146568 2.45 % │ │ ME & PS: MUR=0.5  5.95996 -0.01 % 0.190789 3.2 % │ │ ME & PS: MUR=0.5 MUF=0.5  5.75045 -3.52 % 0.421725 7.33 % │ │ ME & PS: MUR=2  5.92896 -0.53 % 0.139507 2.35 % │ │ ME & PS: MUR=2 MUF=2  5.94091 -0.33 % 0.139395 2.34 % │ │ ME-only: MUF=0.5  5.88796 -1.21 % 0.145277 2.46 % │ │ ME-only: MUF=2  5.99463 0.57 % 0.147018 2.45 % │ │ ME-only: MUR=0.5  5.96607 0.09 % 0.161723 2.71 % │ │ ME-only: MUR=0.5 MUF=0.5  5.91274 -0.8 % 0.160734 2.71 % │ │ ME-only: MUR=2  5.9133 -0.79 % 0.133782 2.26 % │ │ ME-only: MUR=2 MUF=2  5.96392 0.05 % 0.134558 2.25 % │ └────────────────────────────────────────────────────────────────────────────┘ Event generation statistics: Generated events: 1000000 New events: From "Beam_Remnants:Parametrised": 729 (1000737) -> 0 % From "Jet_Evolution:CSS": 2409 (1003146) -> 0.2 % Reweighting statistics: MCatNLO different PDF cut-off: 7203468 MCatNLO large PDF reweighting factor: 89546 MCatNLOvetoed large reweighting factor for parton: 172 different PDF cut-off: 26572424 large AlphaS reweighting factor: 2502682 large PDF reweighting factor: 1239480 vetoed large reweighting factor for parton: 13 Error messages from 'GaugeTest' exceeded frequency limit: 126/20 Perturbative Interface (Matrix Elements): momentum failures: 134 amplitude failures: 2275 WARNING: You are using an unsupported development branch. ┌──────────────────────────────────────────────────────────┐ │ Please cite the publications listed in 'References.tex'. │ └──────────────────────────────────────────────────────────┘ Time: 1h 10m 1s on Thu Apr 24 16:26:28 2025 (User: 1h 9m 12s, System: 4s, Children User: 0s, Children System: 0s)