MadGraph5_aMC@NLO

Segmentation error when computing decay widths

Asked by Seán Mee

Dear Olivier,

I have implemented a model file for a model of my interest. I compute decay widths via this model file. The decay widths include two and three body decays of particles. While I can compute the two and three body widths separately, if I instead generate first the two body processes, and then add the three body processes, I get a segmentation error computing these all at once.

Moreover, this problem seems to arise on our end for Mac OS and Ubuntu, but not on a centOS cluster. The traceback is given below:

Error when reading /unix/cedar/smee/RunInfo/PROC_Sp4_Dark_Matter_UFO_2/SubProcesses/P1_rhod5_zphida/G1/results.dat
Command "generate_events run_01" interrupted with error:
Exception : Reported error: End code 139.0
  Full associated log:
  Process in group number 1
  No PDF is used, alpha_s(MZ) from param_card is used
  Value of alpha_s from param_card: 0.11839999999999999
  The default order of alpha_s running is fixed to 2
  Warning! ptj set to xqcut= 30.000000000000000 to improve integration efficiency
  Note that this might affect non-radiated jets,
  e.g. from decays. Use cut_decays=F in run_card.
  Warning! mmjj set to xqcut= 30.000000000000000 to improve integration efficiency
  Note that this might affect non-radiated jets,
  e.g. from decays. Use cut_decays=F in run_card.
  Define smin to 116408.97839375999
  *****************************************************
  * MadGraph/MadEvent *
  * -------------------------------- *
  * http://madgraph.hep.uiuc.edu *
  * http://madgraph.phys.ucl.ac.be *
  * http://madgraph.roma2.infn.it *
  * -------------------------------- *
  * *
  * PARAMETER AND COUPLING VALUES *
  * *
  *****************************************************

   External Params
   ---------------------------------

  mdl_cabi = 0.22773599999999999
  aEWM1 = 127.90000000000001
  mdl_Gf = 1.1663700000000000E-005
  aS = 0.11839999999999999
  mdl_ymdo = 5.0400000000000002E-003
  mdl_ymup = 2.5500000000000002E-003
  mdl_yms = 0.10100000000000001
  mdl_ymc = 1.2700000000000000
  mdl_ymb = 4.7000000000000002
  mdl_ymt = 172.00000000000000
  mdl_yme = 5.1099999999999995E-004
  mdl_ymm = 0.10566000000000000
  mdl_ymtau = 1.7769999999999999
  mdl_fpiD = 25.000000000000000
  mdl_eD = 1.0000000000000000
  mdl_grD = 6.0000000000000000
  mdl_GSMass = 250.00000000000000
  mdl_RhoMass = 1500.0000000000000
  mdl_epskin = 1.0000000000000000E-002
  mdl_Reta = 1.5000000000000000
  mdl_MV = 1.0000000000000000
  mdl_RVMassMix = -5.5560699999999998E-003
  mdl_RRMassMix = 0.99998500000000001
  mdl_VVMassMix = 0.99998500000000001
  mdl_VRMassMix = 5.5560699999999998E-003
  mdl_VZMassMix = -1.0081900000000000E-004
  mdl_ZVMassMix = 1.0081900000000000E-004
  mdl_RZMassMix = 0.0000000000000000
  mdl_ZRMassMix = 0.0000000000000000
  mdl_ZZMassMix = 1.0000000000000000
  mdl_MZ = 91.187600000000003
  mdl_Me = 5.1099999999999995E-004
  mdl_MMU = 0.10566000000000000
  mdl_MTA = 1.7769999999999999
  mdl_MU = 2.5500000000000002E-003
  mdl_MC = 1.2700000000000000
  mdl_MT = 172.00000000000000
  mdl_MD = 5.0400000000000002E-003
  mdl_MS = 0.10100000000000001
  mdl_MB = 4.7000000000000002
  mdl_MH = 125.00000000000000
  mdl_MVp = 1000.0000000000000
  mdl_WZ = 2.4952000000000001
  mdl_WW = 2.0850000000000000
  mdl_WT = 1.5083359999999999
  mdl_WH = 4.0699999999999998E-003
  mdl_Wpi0 = 1.0000000000000000
  mdl_Wp1 = 1.0000000000000000
  mdl_Wp2 = 1.0000000000000000
  mdl_WetaDa = 1.0000000000000000
  mdl_WRhoD2 = 1.0000000000000000
  mdl_WRhoD3 = 1.0000000000000000
  mdl_WRhoD4 = 1.0000000000000000
  mdl_WRhoD5 = 1.0000000000000000
  mdl_WRhoD6 = 1.0000000000000000
  mdl_WRhoDp = 2.0000000000000000
  mdl_WVp = 2.0000000000000000
   Internal Params
   ---------------------------------

  mdl_cos__cabi = 0.97418004031982097
  mdl_CKM1x1 = (0.97418004031982097,0.0000000000000000)
  mdl_sin__cabi = 0.22577256042856930
  mdl_CKM1x2 = (0.22577256042856930,0.0000000000000000)
  mdl_CKM1x3 = (0.0000000000000000,0.0000000000000000)
  mdl_CKM2x1 = (-0.22577256042856930,0.0000000000000000)
  mdl_CKM2x2 = (0.97418004031982097,0.0000000000000000)
  mdl_CKM2x3 = (0.0000000000000000,0.0000000000000000)
  mdl_CKM3x1 = (0.0000000000000000,0.0000000000000000)
  mdl_CKM3x2 = (0.0000000000000000,0.0000000000000000)
  mdl_CKM3x3 = (1.0000000000000000,0.0000000000000000)
  mdl_MRhoDp = 1500.0000000000000
  mdl_Mpi0 = 250.00000000000000
  mdl_Mp1 = 250.00000000000000
  mdl_Mp2 = 250.00000000000000
  mdl_MetaDa = 375.00000000000000
  mdl_MRhoD2 = 1500.0000000000000
  mdl_MRhoD3 = 1500.0000000000000
  mdl_MRhoD4 = 1500.0000000000000
  mdl_MRhoD5 = 1500.0000000000000
  mdl_MRhoD6 = 1500.0000000000000
  mdl_MZ__exp__2 = 8315.1783937600012
  mdl_MZ__exp__4 = 69142191.720053151
  mdl_sqrt__2 = 1.4142135623730951
  mdl_epskin__exp__2 = 1.0000000000000000E-004
  mdl_eD__exp__2 = 1.0000000000000000
  mdl_grD__exp__2 = 36.000000000000000
  mdl_MH__exp__2 = 15625.000000000000
  mdl_conjg__CKM1x1 = (0.97418004031982097,-0.0000000000000000)
  mdl_conjg__CKM2x1 = (-0.22577256042856930,-0.0000000000000000)
  mdl_conjg__CKM3x1 = (0.0000000000000000,-0.0000000000000000)
  mdl_conjg__CKM1x2 = (0.22577256042856930,-0.0000000000000000)
  mdl_conjg__CKM2x2 = (0.97418004031982097,-0.0000000000000000)
  mdl_conjg__CKM3x2 = (0.0000000000000000,-0.0000000000000000)
  mdl_conjg__CKM1x3 = (0.0000000000000000,-0.0000000000000000)
  mdl_conjg__CKM2x3 = (0.0000000000000000,-0.0000000000000000)
  mdl_conjg__CKM3x3 = (1.0000000000000000,-0.0000000000000000)
  mdl_complexi = (0.0000000000000000,1.0000000000000000)
  mdl_fpiD__exp__2 = 625.00000000000000
  mdl_fpiD__exp__5 = 9765625.0000000000
  mdl_fpiD__exp__3 = 15625.000000000000
  mdl_VRMassMix__exp__2 = 3.0869913844899999E-005
  mdl_RRMassMix__exp__2 = 0.99997000022500004
  mdl_VVMassMix__exp__2 = 0.99997000022500004
  mdl_RVMassMix__exp__2 = 3.0869913844899999E-005
  mdl_VZMassMix__exp__2 = 1.0164470761000000E-008
  mdl_RZMassMix__exp__2 = 0.0000000000000000
  mdl_aEW = 7.8186082877247844E-003
  mdl_MW = 79.824359746197842
  mdl_sqrt__aEW = 8.8422894590285753E-002
  mdl_ee = 0.31345100004952897
  mdl_MW__exp__2 = 6371.9284088904105
  mdl_sw2 = 0.23369913342182447
  mdl_cw = 0.87538612427783857
  mdl_sqrt__sw2 = 0.48342438232036300
  mdl_sw = 0.48342438232036300
  mdl_cw__exp__2 = 0.76630086657817542
  mdl_CR = 0.16440942517723123
  mdl_CV = 0.98645655106338725
  mdl_CZ = 1.1268816396617868E-002
  mdl_g1 = 0.35807170271074895
  mdl_gw = 0.64839716719502682
  mdl_vev = 246.22056907348590
  mdl_vev__exp__2 = 60624.568634871241
  mdl_lam = 0.12886689630821144
  mdl_yb = 2.6995322804122722E-002
  mdl_yc = 7.2944808428161397E-003
  mdl_ydo = 2.8948175943144366E-005
  mdl_ye = 2.9350233942354699E-006
  mdl_ym = 6.0687783137949077E-004
  mdl_ys = 5.8011225600348830E-004
  mdl_yt = 0.98791394091683138
  mdl_ytau = 1.0206529494239589E-002
  mdl_yup = 1.4646398542662327E-005
  mdl_muH = 88.388347648318444
  mdl_I1a11 = (2.82007352074776490E-005,0.0000000000000000)
  mdl_I1a12 = (-6.53570380242041801E-006,-0.0000000000000000)
  mdl_I1a13 = (0.0000000000000000,0.0000000000000000)
  mdl_I1a21 = (1.30973429373901229E-004,0.0000000000000000)
  mdl_I1a22 = (5.65133780943500512E-004,0.0000000000000000)
  mdl_I1a23 = (0.0000000000000000,0.0000000000000000)
  mdl_I1a31 = (0.0000000000000000,0.0000000000000000)
  mdl_I1a32 = (0.0000000000000000,0.0000000000000000)
  mdl_I1a33 = (2.69953228041227219E-002,0.0000000000000000)
  mdl_I2a11 = (1.42682291228309525E-005,0.0000000000000000)
  mdl_I2a12 = (-1.64689361687974799E-003,-0.0000000000000000)
  mdl_I2a13 = (0.0000000000000000,0.0000000000000000)
  mdl_I2a21 = (3.30675490003413980E-006,0.0000000000000000)
  mdl_I2a22 = (7.10613764156678863E-003,0.0000000000000000)
  mdl_I2a23 = (0.0000000000000000,0.0000000000000000)
  mdl_I2a31 = (0.0000000000000000,0.0000000000000000)
  mdl_I2a32 = (0.0000000000000000,0.0000000000000000)
  mdl_I2a33 = (0.98791394091683138,0.0000000000000000)
  mdl_I3a11 = (1.42682291228309525E-005,0.0000000000000000)
  mdl_I3a12 = (3.30675490003413980E-006,0.0000000000000000)
  mdl_I3a13 = (0.0000000000000000,0.0000000000000000)
  mdl_I3a21 = (-1.64689361687974799E-003,0.0000000000000000)
  mdl_I3a22 = (7.10613764156678863E-003,0.0000000000000000)
  mdl_I3a23 = (0.0000000000000000,0.0000000000000000)
  mdl_I3a31 = (0.0000000000000000,0.0000000000000000)
  mdl_I3a32 = (0.0000000000000000,0.0000000000000000)
  mdl_I3a33 = (0.98791394091683138,0.0000000000000000)
  mdl_I4a11 = (2.82007352074776490E-005,0.0000000000000000)
  mdl_I4a12 = (1.30973429373901229E-004,0.0000000000000000)
  mdl_I4a13 = (0.0000000000000000,0.0000000000000000)
  mdl_I4a21 = (-6.53570380242041801E-006,0.0000000000000000)
  mdl_I4a22 = (5.65133780943500512E-004,0.0000000000000000)
  mdl_I4a23 = (0.0000000000000000,0.0000000000000000)
  mdl_I4a31 = (0.0000000000000000,0.0000000000000000)
  mdl_I4a32 = (0.0000000000000000,0.0000000000000000)
  mdl_I4a33 = (2.69953228041227219E-002,0.0000000000000000)
  mdl_ee__exp__2 = 9.8251529432049817E-002
  mdl_sw__exp__2 = 0.23369913342182450
  mdl_CV__exp__2 = 0.97309652713587313
  mdl_CR__exp__2 = 2.7030459087107595E-002
   Internal Params evaluated point by point
   ----------------------------------------

  mdl_sqrt__aS = 0.34409301068170506
  mdl_G__exp__2 = 1.4878582807401259
   Couplings of Sp4_Dark_Matter_UFO
   ---------------------------------

        GC_104 = -0.00000E+00 -0.28380E+00
        GC_105 = 0.00000E+00 0.28380E+00
        GC_107 = 0.00000E+00 0.56760E+00
        GC_112 = -0.00000E+00 -0.28850E-01
        GC_113 = 0.00000E+00 0.86550E-01
        GC_116 = 0.00000E+00 0.37035E+00
        GC_135 = 0.00000E+00 0.67543E+02
        GC_136 = -0.00000E+00 -0.10962E-01
        GC_140 = -0.00000E+00 -0.11478E-06
        GC_141 = 0.00000E+00 -0.42387E+01
        GC_145 = 0.00000E+00 0.60736E-02
        GC_146 = 0.00000E+00 0.85894E-02
        GC_148 = 0.00000E+00 0.85814E-02
        GC_149 = -0.00000E+00 -0.19729E+01
        GC_153 = -0.00000E+00 -0.20659E-04
        GC_155 = -0.00000E+00 -0.37181E-02
        GC_156 = 0.00000E+00 0.72109E+00
        GC_160 = -0.00000E+00 -0.10333E-02
        GC_161 = -0.00000E+00 -0.14612E-02
        GC_163 = 0.00000E+00 -0.14599E-02
        GC_165 = 0.00000E+00 0.24836E-03
        GC_166 = 0.00000E+00 0.19891E-03
        GC_170 = 0.00000E+00 0.20828E-08
        GC_172 = 0.00000E+00 0.37487E-06
        GC_174 = -0.00000E+00 -0.37794E-10
        GC_175 = -0.00000E+00 -0.70324E-04
        GC_179 = 0.00000E+00 0.10077E-06
        GC_180 = 0.00000E+00 0.14251E-06
        GC_182 = 0.00000E+00 0.14237E-06
        GC_184 = 0.00000E+00 -0.24221E-07
        GC_186 = 0.00000E+00 0.23621E-11
         GC_15 = -0.00000E+00 -0.30000E+01
         GC_16 = 0.00000E+00 0.30000E+01
         GC_17 = -0.00000E+00 -0.10607E+01
         GC_18 = 0.00000E+00 0.10607E+01
         GC_19 = -0.00000E+00 -0.21213E+01
         GC_20 = 0.00000E+00 0.21213E+01
         GC_21 = -0.00000E+00 -0.42426E+01
         GC_22 = -0.00000E+00 -0.22500E+01
         GC_24 = -0.00000E+00 -0.45000E+01
         GC_25 = 0.00000E+00 0.45000E+01
         GC_26 = -0.00000E+00 -0.90000E+01
         GC_27 = 0.00000E+00 0.90000E+01
         GC_28 = -0.00000E+00 -0.18000E+02
         GC_29 = 0.00000E+00 0.18000E+02
         GC_31 = -0.00000E+00 -0.63640E+01
         GC_32 = 0.00000E+00 0.63640E+01
         GC_33 = -0.00000E+00 -0.12728E+02
         GC_79 = -0.00000E+00 -0.22926E-05
         GC_81 = -0.00000E+00 -0.30396E-02

 Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

 Backtrace for this error:
 #0 0x7fb63349ae3a
 #1 0x7fb63349a013
 #2 0x7fb6329923ff
 #3 0x41578e
 #4 0x41109e
 #5 0x41adf1
 #6 0x429730
 #7 0x4044ca
 #8 0x40463e
 #9 0x7fb63297e554
 #10 0x402408
 #11 0xffffffffffffffff

 ls status:
 input_app.txt
 run1_app.log

Please report this bug on https://bugs.launchpad.net/mg5amcnlo
More information is found in '/unix/cedar/smee/RunInfo/PROC_Sp4_Dark_Matter_UFO_2/run_01_tag_1_debug.log'.
Please attach this file to your report.

Any help appreciated.

Thanks,
Seán.

Question information

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Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#1

Why do you have MLM activated for a width computation?
I guess that this might be the issue. Could you retry while setting
ickkw to zero.

I guess that I should adapt the automatic run_card to avoid MLM merging while doing 1>N process.
Obviously, typically such type of computation is done via the automatic tools that we have put in place and therefore such issue is not present. ( see 1402.1178)

Cheers,

Olivier

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