!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!! !!!!! !!!!! VERIFICATION CHECK: vc-memory-leak !!!!! !!!!! !!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Description: Check that the model has no memory leaks. This is tested using the Valgrind memory debugging tool (http://valgrind.org) by performing a series of energy and force calculations on a randomly distorted face-centered cubic (FCC) cube base structure for both non-periodic and periodic boundary conditions. Separate configurations are tested for each species supported by the model, as well as one containing a random distribution of all species. Configurations used for testing are provided as auxiliary files. Author: Ellad Tadmor ----------------------------------------------------------------------------------------------------- Results for KIM Model : EAM_Dynamo_MendelevKramerOtt_2009_CuZr__MO_600021860456_005 Supported species : Cu Zr random seed = 13 lattice constant (orig) = 3.000 perturbation amplitude = 0.300 number unit cells per side = 2 ----------------------------------------------------------------------------------------------------- MONOATOMIC STRUCTURE (pbc=False)-- Species = Cu (Configuration in file "config-F-Cu.xyz") ----------------------------------------------------------------------------------------------------- Energy = 15.157227655190873 Forces: 1 -1.50460337e+01 -3.28344906e+01 -4.98077255e+01 2 -1.01552882e+01 1.17693812e+01 -5.87650376e+00 3 2.68230513e+01 -2.45746998e+01 1.58637728e+01 4 -1.63292478e+01 5.37212258e+01 3.25373251e+01 5 9.01345196e+00 -1.43494240e+01 -1.86598107e+00 6 2.42422963e+00 3.45852714e-01 -2.87284432e+00 7 4.44795684e+00 -3.89600341e+01 -4.74886060e+01 8 -2.97982416e+01 -2.63830334e+01 9.63495546e-01 9 -7.24724014e+00 -2.09048749e+01 -2.78786621e+01 10 -3.04532532e+00 1.47783965e+01 -1.76163124e+01 11 -2.32212340e+01 -1.61007090e+01 5.55084468e+00 12 -5.55898814e+00 1.92265258e+01 2.02280466e+01 13 -1.97250424e+01 -8.85766306e+00 -6.27700566e+01 14 9.71546746e+00 9.01521770e+00 -3.14730071e+00 15 7.05367440e+01 1.55905930e+01 1.69361885e+01 16 1.59889144e+01 4.71549009e+01 1.14438321e+01 17 -7.46796308e+00 -2.71026345e+01 -2.84833976e+01 18 4.64586366e+00 2.62779447e+00 5.21394412e-01 19 2.93222478e+00 -3.47322854e+00 3.39279933e+00 20 -1.63281392e+00 2.49855100e+01 2.93994817e+01 21 -2.26552576e+01 -1.05188918e+01 9.19316506e+00 22 2.23728539e+01 3.25685462e+01 2.60284156e+01 23 9.25022978e+00 -8.49581809e-01 1.71981069e+01 24 -8.56927474e-01 1.52900035e+00 2.24586043e+00 25 -3.34073298e+00 -4.74042989e+00 3.60297119e+00 26 -2.47599312e+01 1.74707828e+01 -1.07621983e+01 27 2.90626343e+01 -4.28908187e+01 1.25845274e+01 28 -3.99796847e+01 3.71461007e+01 -6.79480173e+00 29 -3.18234188e+00 -2.43854448e+01 3.11682844e+01 30 3.11937449e+00 4.29402822e+00 2.09860200e+00 31 2.11502360e+00 1.32403302e-01 1.87256667e+00 32 2.15542741e+01 4.56969952e+00 2.25347096e+01 MONOATOMIC STRUCTURE (pbc=True)-- Species = Cu (Configuration in file "config-T-Cu.xyz") ----------------------------------------------------------------------------------------------------- Energy = 15.157227655190873 Forces: 1 -1.50460337e+01 -3.28344906e+01 -4.98077255e+01 2 -1.01552882e+01 1.17693812e+01 -5.87650376e+00 3 2.68230513e+01 -2.45746998e+01 1.58637728e+01 4 -1.63292478e+01 5.37212258e+01 3.25373251e+01 5 9.01345196e+00 -1.43494240e+01 -1.86598107e+00 6 2.42422963e+00 3.45852714e-01 -2.87284432e+00 7 4.44795684e+00 -3.89600341e+01 -4.74886060e+01 8 -2.97982416e+01 -2.63830334e+01 9.63495546e-01 9 -7.24724014e+00 -2.09048749e+01 -2.78786621e+01 10 -3.04532532e+00 1.47783965e+01 -1.76163124e+01 11 -2.32212340e+01 -1.61007090e+01 5.55084468e+00 12 -5.55898814e+00 1.92265258e+01 2.02280466e+01 13 -1.97250424e+01 -8.85766306e+00 -6.27700566e+01 14 9.71546746e+00 9.01521770e+00 -3.14730071e+00 15 7.05367440e+01 1.55905930e+01 1.69361885e+01 16 1.59889144e+01 4.71549009e+01 1.14438321e+01 17 -7.46796308e+00 -2.71026345e+01 -2.84833976e+01 18 4.64586366e+00 2.62779447e+00 5.21394412e-01 19 2.93222478e+00 -3.47322854e+00 3.39279933e+00 20 -1.63281392e+00 2.49855100e+01 2.93994817e+01 21 -2.26552576e+01 -1.05188918e+01 9.19316506e+00 22 2.23728539e+01 3.25685462e+01 2.60284156e+01 23 9.25022978e+00 -8.49581809e-01 1.71981069e+01 24 -8.56927474e-01 1.52900035e+00 2.24586043e+00 25 -3.34073298e+00 -4.74042989e+00 3.60297119e+00 26 -2.47599312e+01 1.74707828e+01 -1.07621983e+01 27 2.90626343e+01 -4.28908187e+01 1.25845274e+01 28 -3.99796847e+01 3.71461007e+01 -6.79480173e+00 29 -3.18234188e+00 -2.43854448e+01 3.11682844e+01 30 3.11937449e+00 4.29402822e+00 2.09860200e+00 31 2.11502360e+00 1.32403302e-01 1.87256667e+00 32 2.15542741e+01 4.56969952e+00 2.25347096e+01 MONOATOMIC STRUCTURE (pbc=False)-- Species = Zr (Configuration in file "config-F-Zr.xyz") ----------------------------------------------------------------------------------------------------- Energy = 408.4051875464864 Forces: 1 -2.56023853e+01 -2.37901512e+01 -3.09126246e+01 2 -5.61721069e+00 -1.08354922e+01 -7.61792109e+01 3 1.34950594e+01 -7.61538461e+01 -2.44049203e+01 4 -8.19369370e+01 -1.69961092e+01 -1.65058222e+01 5 -1.26677916e+01 -5.17177466e+01 -4.83928226e+01 6 4.39451085e+01 1.25406950e+01 -4.92643029e+01 7 4.99948104e+01 -5.54348303e+01 -6.91786183e+00 8 2.94318141e+01 -2.02051112e+01 -3.42678664e+01 9 -4.28439831e+01 1.65300167e+01 -4.70124384e+01 10 -1.82304013e+01 4.92964502e+01 -4.68809880e+01 11 -1.19537551e+01 2.68065997e+01 -3.42219658e+01 12 -5.94922598e+01 5.09630392e+01 -1.54573561e+01 13 1.83115146e+01 -5.45343556e+00 -6.46810427e+01 14 2.88529349e+01 2.52992186e+01 -2.02984956e+01 15 6.75552618e+01 1.75893203e+01 -1.23781034e+01 16 2.30568495e+01 6.86240689e+01 -7.15893869e+00 17 -5.66063575e+01 -4.62526456e+01 1.95092607e+01 18 -2.11678957e+01 -3.00038732e+01 4.43672257e+01 19 -9.01742178e+00 -3.82673612e+01 4.20249405e+01 20 -3.84799281e+01 -1.52716034e+01 4.84801271e+01 21 -4.80339033e-01 -7.25597864e+01 5.60758842e+00 22 6.35357008e+01 1.02735234e+01 2.51315038e+01 23 2.56164668e+01 -2.78718444e+01 3.14737442e+01 24 1.66240083e+01 -7.95640192e+00 6.88066478e+01 25 -7.76524841e+01 1.44112973e+01 1.81327554e+01 26 -3.57417218e-02 6.99063295e+01 1.92176341e+01 27 -1.10306651e+01 -2.33154451e+00 6.71245115e+01 28 -3.71833572e+01 3.12397506e+01 3.29565421e+01 29 2.76704710e+01 1.99039644e+01 2.36116318e+01 30 4.69129463e+01 4.76193765e+01 -1.89702359e+00 31 4.40908869e+01 -1.08478577e+01 4.79337697e+01 32 1.09050807e+01 5.09459904e+01 4.24539011e+01 MONOATOMIC STRUCTURE (pbc=True)-- Species = Zr (Configuration in file "config-T-Zr.xyz") ----------------------------------------------------------------------------------------------------- Energy = 408.4051875464864 Forces: 1 -2.56023853e+01 -2.37901512e+01 -3.09126246e+01 2 -5.61721069e+00 -1.08354922e+01 -7.61792109e+01 3 1.34950594e+01 -7.61538461e+01 -2.44049203e+01 4 -8.19369370e+01 -1.69961092e+01 -1.65058222e+01 5 -1.26677916e+01 -5.17177466e+01 -4.83928226e+01 6 4.39451085e+01 1.25406950e+01 -4.92643029e+01 7 4.99948104e+01 -5.54348303e+01 -6.91786183e+00 8 2.94318141e+01 -2.02051112e+01 -3.42678664e+01 9 -4.28439831e+01 1.65300167e+01 -4.70124384e+01 10 -1.82304013e+01 4.92964502e+01 -4.68809880e+01 11 -1.19537551e+01 2.68065997e+01 -3.42219658e+01 12 -5.94922598e+01 5.09630392e+01 -1.54573561e+01 13 1.83115146e+01 -5.45343556e+00 -6.46810427e+01 14 2.88529349e+01 2.52992186e+01 -2.02984956e+01 15 6.75552618e+01 1.75893203e+01 -1.23781034e+01 16 2.30568495e+01 6.86240689e+01 -7.15893869e+00 17 -5.66063575e+01 -4.62526456e+01 1.95092607e+01 18 -2.11678957e+01 -3.00038732e+01 4.43672257e+01 19 -9.01742178e+00 -3.82673612e+01 4.20249405e+01 20 -3.84799281e+01 -1.52716034e+01 4.84801271e+01 21 -4.80339033e-01 -7.25597864e+01 5.60758842e+00 22 6.35357008e+01 1.02735234e+01 2.51315038e+01 23 2.56164668e+01 -2.78718444e+01 3.14737442e+01 24 1.66240083e+01 -7.95640192e+00 6.88066478e+01 25 -7.76524841e+01 1.44112973e+01 1.81327554e+01 26 -3.57417218e-02 6.99063295e+01 1.92176341e+01 27 -1.10306651e+01 -2.33154451e+00 6.71245115e+01 28 -3.71833572e+01 3.12397506e+01 3.29565421e+01 29 2.76704710e+01 1.99039644e+01 2.36116318e+01 30 4.69129463e+01 4.76193765e+01 -1.89702359e+00 31 4.40908869e+01 -1.08478577e+01 4.79337697e+01 32 1.09050807e+01 5.09459904e+01 4.24539011e+01 MIXED STRUCTURE (pbc=False)-- Species = Cu Zr (Configuration in file "config-F-CuZr.xyz") ----------------------------------------------------------------------------------------------------- Energy = 493.0186825321847 Forces: 1 -6.38768739e+01 -7.39746675e+01 -4.45488659e+01 2 -4.16339773e+00 8.22308781e+01 -1.20011692e+02 3 2.65220401e+01 -1.71655426e+02 -2.89583727e+01 4 -1.49342663e+02 3.74833457e+01 -9.13989285e+00 5 5.47524836e+01 -9.54732055e+01 -1.00744999e+02 6 1.04621604e+02 -1.06791421e+01 -8.16452281e+01 7 3.07299470e+01 -4.23241640e+01 2.08133522e+01 8 2.81665918e+01 3.67513497e+01 6.81283466e+01 9 -3.95939585e+01 1.00124477e+01 -4.66221621e+01 10 -8.47306474e+00 2.60420941e+01 -4.51145879e+01 11 1.73090490e+01 9.22676786e+01 -1.12819098e+01 12 -2.11004758e+01 1.69719636e+01 2.49674699e+01 13 -3.71926479e+01 1.24811544e+01 -3.58153390e+01 14 5.08064934e+01 1.03146652e+01 -3.33338060e+01 15 3.22271310e+01 -5.79517301e+01 -3.56993201e+01 16 -1.95067859e+01 8.02326981e+01 3.64662965e+01 17 -7.86100479e+01 -6.07663777e+01 5.59486592e+01 18 4.78003336e+00 5.05585253e+01 1.29410953e+02 19 -1.16355056e+01 -3.62714813e+01 1.85041556e+01 20 -6.71360858e+01 -6.50989385e+01 6.40080452e+01 21 7.61548522e+01 -6.61271861e+01 2.98270593e+01 22 3.16159705e+01 3.15412640e+01 -4.59828317e+01 23 3.10513696e+01 -7.97557920e+01 3.16626737e+01 24 -1.98772874e+01 5.03254895e+01 4.57656137e+01 25 -3.66467821e+01 7.53066028e+01 -2.28727450e+01 26 -7.83557708e+01 4.30577592e+01 -5.06903857e+01 27 3.47068237e+01 1.15780458e+01 4.03551750e+01 28 -3.50107239e+01 3.81761308e+01 2.05388680e+01 29 1.47404134e+01 -6.30870223e+01 -1.91929463e+01 30 3.73137637e+01 6.19378724e+01 2.64956410e+01 31 6.19297198e+01 -1.25074943e+01 3.94849360e+01 32 3.30937855e+01 6.84026625e+01 7.92778385e+01 MIXED STRUCTURE (pbc=True)-- Species = Cu Zr (Configuration in file "config-T-CuZr.xyz") ----------------------------------------------------------------------------------------------------- Energy = 1235.8660149456134 Forces: 1 -1.48106001e+02 -7.52689044e+01 -5.30040006e+01 2 -1.08646533e+01 1.44321382e+02 -9.98010041e+01 3 2.55042987e+01 -1.90315073e+02 9.99544110e+00 4 -1.68853879e+02 8.92264881e+01 -8.22648518e+00 5 1.35514962e+02 -7.03343289e+01 -6.75064386e+01 6 1.41267052e+02 -1.38411461e+01 -5.64960159e+01 7 3.27255300e+01 -2.58788364e+01 5.75689265e+00 8 4.71303550e+01 6.54830038e+01 1.02315390e+02 9 -5.92506167e+01 1.45773268e+01 1.72028872e+01 10 -4.17894938e+00 -9.68806779e+01 -1.35422787e+01 11 2.26853695e+01 1.02343149e+02 -5.67720362e+00 12 2.10030479e+00 -2.27508571e+01 -2.44068597e+01 13 -3.54744980e+01 3.36874773e+01 -1.00821942e+01 14 6.80493097e+01 1.26534039e+01 -2.11848117e+01 15 3.04680828e+01 -6.58418900e+01 -3.55352411e+01 16 7.19759179e+00 -1.34753392e+00 4.30223511e+01 17 -8.24056132e+01 -5.20549080e+01 9.24687569e+01 18 -5.55275865e+00 1.12504482e+02 1.51662988e+02 19 -6.85353116e+01 -6.18543106e+00 -8.72050413e+01 20 -7.02361853e+01 -7.21450666e+01 5.92727073e+01 21 1.03385603e+02 -5.21034083e+01 3.81173768e+01 22 -3.92241659e+01 6.11811530e+01 -6.38010610e+01 23 6.25876688e+01 -6.90274814e+01 4.64815851e+01 24 8.56365434e+00 4.87240229e+01 -2.44393601e+01 25 -3.61880742e+01 8.74497933e+01 -3.52855585e+01 26 -9.19656615e+01 1.96801885e+01 -6.92057215e+01 27 6.56162536e+01 1.95491868e+01 -1.14784540e+01 28 -7.64216917e+01 3.78722748e+01 1.65900127e-01 29 2.85624885e+01 -6.86625322e+01 -4.13419920e+01 30 -1.58194332e+01 3.07867141e+01 7.32529697e+01 31 5.43198759e+01 -1.13371504e+01 2.86170696e+01 32 7.73990929e+01 1.39351797e+01 5.98874062e+01 ================================================================================ VALGRIND OUTPUT ================================================================================ ==50720== Memcheck, a memory error detector ==50720== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==50720== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info ==50720== Command: python runner2.py EAM_Dynamo_MendelevKramerOtt_2009_CuZr__MO_600021860456_005 ==50720== ==51773== Warning: invalid file descriptor 1048564 in syscall close() ==51773== Warning: invalid file descriptor 1048565 in syscall close() ==51773== Warning: invalid file descriptor 1048566 in syscall close() ==51773== Warning: invalid file descriptor 1048567 in syscall close() ==51773== Use --log-fd= to select an alternative log fd. ==51773== Warning: invalid file descriptor 1048568 in syscall close() ==51773== Warning: invalid file descriptor 1048569 in syscall close() ==51774== Warning: invalid file descriptor 1048564 in syscall close() ==51774== Warning: invalid file descriptor 1048565 in syscall close() ==51774== Warning: invalid file descriptor 1048566 in syscall close() ==51774== Warning: invalid file descriptor 1048567 in syscall close() ==51774== Use --log-fd= to select an alternative log fd. ==51774== Warning: invalid file descriptor 1048568 in syscall close() ==51774== Warning: invalid file descriptor 1048569 in syscall close() ==51793== Warning: invalid file descriptor 1048564 in syscall close() ==51793== Warning: invalid file descriptor 1048565 in syscall close() ==51793== Warning: invalid file descriptor 1048566 in syscall close() ==51793== Warning: invalid file descriptor 1048567 in syscall close() ==51793== Use --log-fd= to select an alternative log fd. ==51793== Warning: invalid file descriptor 1048568 in syscall close() ==51793== Warning: invalid file descriptor 1048569 in syscall close() ==51794== Warning: invalid file descriptor 1048564 in syscall close() ==51794== Warning: invalid file descriptor 1048565 in syscall close() ==51794== Warning: invalid file descriptor 1048566 in syscall close() ==51794== Warning: invalid file descriptor 1048567 in syscall close() ==51794== Use --log-fd= to select an alternative log fd. ==51794== Warning: invalid file descriptor 1048568 in syscall close() ==51794== Warning: invalid file descriptor 1048569 in syscall close() ==51795== Warning: invalid file descriptor 1048564 in syscall close() ==51795== Warning: invalid file descriptor 1048565 in syscall close() ==51795== Warning: invalid file descriptor 1048566 in syscall close() ==51795== Warning: invalid file descriptor 1048567 in syscall close() ==51795== Use --log-fd= to select an alternative log fd. ==51795== Warning: invalid file descriptor 1048568 in syscall close() ==51795== Warning: invalid file descriptor 1048569 in syscall close() ==51796== Warning: invalid file descriptor 1048564 in syscall close() ==51796== Warning: invalid file descriptor 1048565 in syscall close() ==51796== Warning: invalid file descriptor 1048566 in syscall close() ==51796== Warning: invalid file descriptor 1048567 in syscall close() ==51796== Use --log-fd= to select an alternative log fd. ==51796== Warning: invalid file descriptor 1048568 in syscall close() ==51796== Warning: invalid file descriptor 1048569 in syscall close() ==51904== Warning: invalid file descriptor 1048564 in syscall close() ==51904== Warning: invalid file descriptor 1048565 in syscall close() ==51904== Warning: invalid file descriptor 1048566 in syscall close() ==51904== Warning: invalid file descriptor 1048567 in syscall close() ==51904== Use --log-fd= to select an alternative log fd. ==51904== Warning: invalid file descriptor 1048568 in syscall close() ==51904== Warning: invalid file descriptor 1048569 in syscall close() ==51909== Warning: invalid file descriptor 1048564 in syscall close() ==51909== Warning: invalid file descriptor 1048565 in syscall close() ==51909== Warning: invalid file descriptor 1048566 in syscall close() ==51909== Warning: invalid file descriptor 1048567 in syscall close() ==51909== Use --log-fd= to select an alternative log fd. ==51909== Warning: invalid file descriptor 1048568 in syscall close() ==51909== Warning: invalid file descriptor 1048569 in syscall close() ==51909== Warning: invalid file descriptor 1048570 in syscall close() ==51918== Warning: invalid file descriptor 1048564 in syscall close() ==51918== Warning: invalid file descriptor 1048565 in syscall close() ==51918== Warning: invalid file descriptor 1048566 in syscall close() ==51918== Warning: invalid file descriptor 1048567 in syscall close() ==51918== Use --log-fd= to select an alternative log fd. ==51918== Warning: invalid file descriptor 1048568 in syscall close() ==51918== Warning: invalid file descriptor 1048569 in syscall close() ==51926== Warning: invalid file descriptor 1048564 in syscall close() ==51926== Warning: invalid file descriptor 1048565 in syscall close() ==51926== Warning: invalid file descriptor 1048566 in syscall close() ==51926== Warning: invalid file descriptor 1048567 in syscall close() ==51926== Use --log-fd= to select an alternative log fd. ==51926== Warning: invalid file descriptor 1048568 in syscall close() ==51926== Warning: invalid file descriptor 1048569 in syscall close() ==52326== Warning: invalid file descriptor 1048564 in syscall close() ==52326== Warning: invalid file descriptor 1048565 in syscall close() ==52326== Warning: invalid file descriptor 1048566 in syscall close() ==52326== Warning: invalid file descriptor 1048567 in syscall close() ==52326== Use --log-fd= to select an alternative log fd. ==52326== Warning: invalid file descriptor 1048568 in syscall close() ==52326== Warning: invalid file descriptor 1048569 in syscall close() ==52326== Warning: invalid file descriptor 1048570 in syscall close() ==52331== Warning: invalid file descriptor 1048564 in syscall close() ==52331== Warning: invalid file descriptor 1048565 in syscall close() ==52331== Warning: invalid file descriptor 1048566 in syscall close() ==52331== Warning: invalid file descriptor 1048567 in syscall close() ==52331== Use --log-fd= to select an alternative log fd. ==52331== Warning: invalid file descriptor 1048568 in syscall close() ==52331== Warning: invalid file descriptor 1048569 in syscall close() ==52347== Warning: invalid file descriptor 1048564 in syscall close() ==52347== Warning: invalid file descriptor 1048565 in syscall close() ==52347== Warning: invalid file descriptor 1048566 in syscall close() ==52347== Warning: invalid file descriptor 1048567 in syscall close() ==52347== Use --log-fd= to select an alternative log fd. ==52347== Warning: invalid file descriptor 1048568 in syscall close() ==52347== Warning: invalid file descriptor 1048569 in syscall close() ==52357== Warning: invalid file descriptor 1048564 in syscall close() ==52357== Warning: invalid file descriptor 1048565 in syscall close() ==52357== Warning: invalid file descriptor 1048566 in syscall close() ==52357== Warning: invalid file descriptor 1048567 in syscall close() ==52357== Use --log-fd= to select an alternative log fd. ==52357== Warning: invalid file descriptor 1048568 in syscall close() ==52357== Warning: invalid file descriptor 1048569 in syscall close() ==50720== ==50720== HEAP SUMMARY: ==50720== in use at exit: 1,719,294 bytes in 1,331 blocks ==50720== total heap usage: 50,918 allocs, 49,587 frees, 112,098,292 bytes allocated ==50720== ==50720== LEAK SUMMARY: ==50720== definitely lost: 0 bytes in 0 blocks ==50720== indirectly lost: 0 bytes in 0 blocks ==50720== possibly lost: 178,943 bytes in 97 blocks ==50720== still reachable: 1,540,351 bytes in 1,234 blocks ==50720== suppressed: 0 bytes in 0 blocks ==50720== Rerun with --leak-check=full to see details of leaked memory ==50720== ==50720== For counts of detected and suppressed errors, rerun with: -v ==50720== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 16411 from 604) ================================================================================ To pass this verification check the number of bytes that are "definitely lost" or "indirectly lost" must be zero. NOTE that Valgrind will typically report non-zero "possibly lost" bytes due to Python's internal memory allocation and garbage collection that it does not monitor. Full Valgrind output written to auxiliary file "valgrind.out" Grade: P Comment: No memory leak detected.