!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!! !!!!! !!!!! 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_PunYamakovMishin_2013_NiAlCo__MO_826591359508_000 Supported species : Al Co Ni random seed = 13 lattice constant (orig) = 3.000 perturbation amplitude = 0.300 number unit cells per side = 2 ----------------------------------------------------------------------------------------------------- MONOATOMIC STRUCTURE (pbc=False)-- Species = Al (Configuration in file "config-F-Al.xyz") ----------------------------------------------------------------------------------------------------- Energy = 15.748816484 Forces: 1 -3.32162199e+00 -2.71300023e+00 -3.36275383e+00 2 1.54871207e+00 -1.27660982e+00 -6.91169765e+00 3 2.36517606e+00 -6.00636464e+00 5.90553202e-01 4 -6.54962087e+00 2.23910015e+00 -1.91217463e-01 5 -1.06656256e+00 -4.38847396e+00 -3.37430556e+00 6 3.91511222e+00 1.32338239e+00 -3.92406613e+00 7 3.38281527e+00 -3.63218127e+00 -2.44533702e-01 8 -1.00222258e+00 -2.00451364e+00 1.11383409e+00 9 -4.44345893e+00 -3.71816170e-01 -5.60228727e+00 10 5.99657894e-01 6.29311272e+00 -4.91647929e+00 11 -2.64053314e+00 -2.60777589e+00 -4.18957555e-01 12 -5.78210754e+00 4.78440302e+00 1.07239430e+00 13 2.13438604e+00 -1.63800197e+00 -7.32135649e+00 14 4.45056715e+00 3.92477590e+00 -4.84225819e+00 15 6.95307838e+00 -1.92040836e+00 -6.87301117e-01 16 -2.10717474e+00 8.77559510e+00 -6.59957539e-01 17 -5.81740313e+00 -4.53392588e+00 1.98383034e-01 18 1.68181027e+00 5.03823555e-01 -5.29389044e-01 19 2.36383466e+00 -5.91260672e+00 3.58786943e+00 20 -4.53291514e+00 2.10375186e+00 5.28772038e+00 21 -2.22324160e+00 -4.54991930e+00 8.40256659e-01 22 5.67890564e+00 1.04095799e+00 5.70112364e-01 23 2.61351873e+00 -1.90940832e+00 4.18526229e+00 24 9.64954235e-01 -8.50093998e-01 4.75954576e+00 25 -6.20728022e+00 -1.12678807e+00 -7.12281380e-01 26 5.08469748e-01 7.22825913e+00 -1.14053229e+00 27 -1.09940743e+00 -1.37664178e+00 6.09638427e+00 28 -4.54190987e+00 3.00072388e+00 3.47790985e+00 29 3.69218618e-01 -3.17290396e+00 1.97507436e+00 30 5.34550452e+00 5.09108759e+00 1.76371820e+00 31 4.76341002e+00 -9.09565054e-01 4.24297631e+00 32 1.69632823e+00 4.59202574e+00 5.07737999e+00 MONOATOMIC STRUCTURE (pbc=True)-- Species = Al (Configuration in file "config-T-Al.xyz") ----------------------------------------------------------------------------------------------------- Energy = 81.9827350575 Forces: 1 1.41811980e+00 4.77297634e-01 3.62954160e-01 2 1.64579544e+00 -1.26082999e+00 3.26578553e-01 3 1.62423892e+00 2.14732765e+00 1.68239555e+00 4 3.20304432e-01 2.70987924e+00 -1.79463952e-01 5 -8.58387801e-01 1.09911443e+00 -3.99481243e-01 6 -1.21746651e+00 2.96323369e+00 -6.18729900e-01 7 -2.56044289e+00 1.36049653e+00 3.81530294e-01 8 -1.02426048e+00 -2.70730889e+00 1.23276631e+00 9 -2.65715784e+00 -1.38728109e+00 -4.35066456e-01 10 7.32029857e-01 2.31203026e+00 2.42718765e-01 11 -2.71578206e+00 -2.51424385e+00 2.99025831e-02 12 -3.36445729e-01 -1.35350301e-01 4.44822240e-01 13 2.46169746e+00 -1.89115208e+00 -1.54758726e+00 14 1.23181239e+00 -8.31702811e-01 -2.08692928e+00 15 2.75783963e+00 -2.24408645e+00 -5.78294336e-02 16 -1.47371204e+00 1.81795081e+00 -4.66904901e-01 17 4.11797761e-01 -1.21619867e+00 3.00278562e-01 18 3.02107442e+00 5.84152061e-01 -1.29363794e-01 19 2.07345732e+00 -2.49819312e-01 -1.46227726e+00 20 -4.56570695e-01 2.65704996e+00 4.02619845e-01 21 -3.50559404e+00 1.64943453e+00 1.98773637e+00 22 -1.15672655e+00 2.25219378e+00 2.97639561e-01 23 -3.00770113e+00 -1.09922009e+00 -5.19633928e-01 24 1.21376961e+00 2.74807548e-01 -2.71266894e+00 25 -6.46295730e-01 -1.74917787e+00 -4.81109991e-01 26 1.12214779e+00 1.02309574e+00 -5.02564747e-01 27 -6.30125910e-01 -1.56951255e+00 -1.10386223e-01 28 -2.10643568e+00 -8.79452836e-01 2.84252544e-01 29 4.90107812e-01 -3.06337862e+00 2.14224401e+00 30 6.33705416e-01 -3.45435089e-01 2.34391177e+00 31 3.77582750e-01 -1.65477343e+00 3.90906849e-01 32 2.81762428e+00 1.47086007e+00 -1.14326065e+00 MONOATOMIC STRUCTURE (pbc=False)-- Species = Co (Configuration in file "config-F-Co.xyz") ----------------------------------------------------------------------------------------------------- Energy = 1456.03179668 Forces: 1 -3.63983422e+01 -1.16324659e+02 -1.21564129e+02 2 1.93466316e+02 -9.21612052e+01 -8.11902413e+01 3 3.53778501e+01 -6.58561780e+01 -2.06228513e+01 4 -7.78416724e+01 7.80622464e+01 1.32210026e+02 5 -5.84262896e+02 -2.03686379e+02 -6.82780395e+02 6 6.06983392e+02 2.42990439e+02 -8.09884700e+02 7 1.28684658e+03 -9.26253794e+02 6.11509181e+02 8 -1.29191089e+03 8.38255076e+02 8.57377847e+02 9 -1.49771316e+02 1.08547288e+02 -2.48393746e+01 10 -1.63667951e+02 2.93050473e+01 -1.14262394e+02 11 1.07422487e+03 1.81331519e+02 -8.70072315e+02 12 -1.01344656e+01 1.97171134e+01 1.03176326e+00 13 -9.51586634e+02 -2.72883654e+03 -3.22276610e+02 14 1.44575651e+03 1.79738814e+03 -9.02235077e+02 15 3.30686357e+01 2.25024865e+01 -2.38565489e+00 16 -3.50054412e+02 9.57911165e+02 1.31428510e+03 17 -3.20990767e+01 -3.20649419e+01 1.42407660e+01 18 2.55635175e+01 3.37178777e+01 3.86375284e+01 19 2.94019735e+00 -3.94194254e+00 5.30872081e+00 20 -7.26667924e+00 -6.35149235e+00 7.64920994e-01 21 -7.76577907e+00 -3.31769625e+01 -3.55891804e+01 22 8.20812884e+02 1.89996781e+02 -7.83129669e+02 23 2.15243367e+01 -1.40227267e+01 1.85750280e+01 24 -8.36213214e+02 -2.40849762e+02 7.85790746e+02 25 -1.06951945e+03 -1.37007961e+02 9.31278148e+02 26 1.87145939e+02 -5.84476892e+01 -4.11687948e+02 27 1.13831659e+02 -3.44258063e+02 6.24225706e+01 28 -3.30435690e+02 4.21708622e+02 3.36156781e+02 29 -7.37696941e+00 -3.70453191e+01 -2.80065045e+01 30 1.32536813e+01 2.40096866e+01 -1.90257757e+01 31 2.20490377e+01 5.85815566e+01 6.71858933e+01 32 2.34600379e+01 3.62605748e+01 5.27777977e+01 MONOATOMIC STRUCTURE (pbc=True)-- Species = Co (Configuration in file "config-T-Co.xyz") ----------------------------------------------------------------------------------------------------- Energy = 1570.48995913 Forces: 1 -2.37659902e+01 -1.25779071e+02 -1.06067090e+02 2 2.05003363e+02 -1.01286586e+02 -5.85744709e+01 3 3.45198824e+01 -6.54931148e+01 -2.07462260e+01 4 -7.38853179e+01 7.38853378e+01 1.30213845e+02 5 -6.08609320e+02 -1.63202515e+02 -6.63728450e+02 6 6.29334945e+02 2.44086238e+02 -7.47885624e+02 7 1.28012852e+03 -9.20995337e+02 6.16761823e+02 8 -1.29056969e+03 8.37105054e+02 8.56053995e+02 9 -1.85296287e+02 1.09267698e+02 4.42731337e+01 10 -1.63305747e+02 2.85172340e+01 -8.96872186e+01 11 1.07316036e+03 1.81414100e+02 -8.70863907e+02 12 2.90998431e+00 1.59153287e+01 -1.61378567e+01 13 -9.51139236e+02 -2.72756362e+03 -3.21908647e+02 14 1.45734361e+03 1.77161184e+03 -8.81192606e+02 15 1.24298962e+01 2.30542565e+01 -6.16812106e+00 16 -3.50811176e+02 9.49776775e+02 1.31751862e+03 17 -3.22190356e+01 -1.91212596e+01 1.24664824e+01 18 2.49241898e+01 3.24145795e+01 3.94023383e+01 19 5.61829348e+02 9.28647827e+02 5.03279981e+01 20 -2.22409645e+00 -1.30326580e+01 -3.18420200e+01 21 -6.45244038e+00 -2.58957183e+01 -3.92151646e+01 22 8.11259794e+02 1.92037031e+02 -7.88114680e+02 23 3.12124501e+01 -1.82159737e+01 -4.40974647e+00 24 -8.62610523e+02 -2.38438660e+02 7.25577586e+02 25 -1.05432032e+03 -1.35385519e+02 9.37233971e+02 26 1.88465632e+02 -7.42737079e+01 -4.19988489e+02 27 1.47495559e+02 -3.24257970e+02 -1.07999690e+01 28 -9.95008315e+02 -4.00576150e+02 3.06709660e+02 29 -6.21078992e+00 -3.56292907e+01 -2.68491994e+01 30 -1.19749725e+00 1.91416295e+01 -5.04146344e+00 31 2.47769215e+01 5.15099934e+01 4.62194332e+01 32 1.22831329e+02 -6.92377679e+01 2.64620614e+01 MONOATOMIC STRUCTURE (pbc=False)-- Species = Ni (Configuration in file "config-F-Ni.xyz") ----------------------------------------------------------------------------------------------------- Energy = -66.2587710555 Forces: 1 -2.84928217e+00 -3.90324525e+00 -3.69377725e+00 2 -1.10378130e+00 -1.48316593e+00 -5.78408956e+00 3 -2.30092497e+00 -4.67587202e+00 1.96682615e+00 4 -3.52033398e+00 3.34010107e-01 4.07876574e+00 5 -2.81621141e+00 -4.13664040e+00 -6.54955506e+00 6 5.69320782e+00 3.19027867e+00 -3.59729805e+00 7 5.59875731e+00 -4.26592059e+00 3.16612423e+00 8 1.79255112e+00 -9.23709755e-01 4.32057121e+00 9 -2.31905304e+00 3.06961721e+00 -2.06747371e+00 10 -2.57188873e+00 3.24118755e+00 -5.20549607e+00 11 -6.33319932e+00 -9.21276437e-02 1.33498052e+00 12 -2.96998894e+00 3.58588390e+00 -3.12223078e+00 13 3.06315690e+00 1.15260177e+00 -8.44436529e+00 14 2.98999397e+00 2.27286218e+00 -3.22539819e+00 15 6.61432460e+00 -2.75835965e+00 2.90103647e+00 16 7.08998884e-02 8.68810261e+00 1.67904411e+00 17 -1.91776621e+00 -3.03761701e+00 -2.51252473e+00 18 -1.39709266e+00 -2.53805899e+00 9.17651006e-01 19 1.10545347e+00 -3.62176509e+00 1.32963932e+00 20 -2.69568757e+00 2.80737235e+00 2.76252262e+00 21 -1.27447091e+00 -3.98268696e+00 3.15445564e+00 22 3.21776087e+00 3.26174142e+00 -2.70258895e+00 23 8.04007866e-01 -2.22124299e+00 1.99854684e+00 24 6.09978951e-01 1.89671196e+00 2.52241424e+00 25 -3.07395178e+00 -4.62830721e+00 6.07879570e-01 26 3.73226767e+00 4.72528998e+00 1.01446231e+00 27 -1.33131778e+00 1.92464470e+00 4.49636022e+00 28 -1.62899353e+00 8.65888484e-01 2.96850202e+00 29 3.31096902e+00 -7.42072568e-01 4.55210537e+00 30 2.25106350e+00 2.69031633e+00 -2.74891485e+00 31 1.68360590e+00 -3.13785969e+00 1.75825894e+00 32 -2.43405454e+00 2.44214249e+00 2.12356597e+00 MONOATOMIC STRUCTURE (pbc=True)-- Species = Ni (Configuration in file "config-T-Ni.xyz") ----------------------------------------------------------------------------------------------------- Energy = -56.0511792421 Forces: 1 -1.75083098e+00 -2.72719095e+00 -2.62486167e+00 2 -7.08610526e-01 -1.06134536e-01 -1.81564502e-01 3 -1.40610944e+00 2.36127326e+00 2.04187842e+00 4 1.46745005e+00 5.47448365e-01 4.90988471e+00 5 -3.48941208e+00 3.47002721e+00 -2.67926500e+00 6 -3.67264436e-02 3.22671742e+00 -4.58918345e+00 7 4.07020040e+00 1.32763273e+00 4.98045573e+00 8 1.90232170e+00 -5.63212608e-01 4.51411581e+00 9 1.79634735e+00 4.55261355e+00 -1.88242250e+00 10 -4.79874868e+00 -2.07129281e+00 -4.31105447e+00 11 -6.41922028e+00 -4.91502739e-01 1.69665765e+00 12 -2.31029172e+00 -1.35221319e+00 -2.41656282e+00 13 2.87343557e+00 1.12680855e+00 -4.84151456e+00 14 6.15629815e+00 -3.38815206e+00 -2.28886543e+00 15 1.97739948e+00 -2.00759085e+00 2.11966449e+00 16 -7.56166727e-01 -2.91619053e-01 2.20532286e+00 17 2.53064308e-01 3.20215149e+00 -2.84973595e+00 18 -1.60481439e+00 -2.53535256e+00 1.22803064e+00 19 -7.17670908e-01 6.28657576e-01 -4.79680133e-01 20 -3.60981224e+00 2.97826393e+00 -3.22094555e+00 21 -1.97652626e+00 6.16973708e-01 2.13743524e+00 22 1.36247169e-01 4.11466931e+00 -1.29149386e+00 23 1.64006020e+00 3.75282606e+00 6.64497868e-01 24 1.42041891e+00 1.26711531e+00 -1.24705531e+00 25 1.60196388e+00 -5.90013610e+00 1.39964747e+00 26 3.32963087e+00 -1.33229925e+00 1.14916845e+00 27 -2.35654100e+00 2.21930131e+00 9.85262965e-01 28 3.83563021e+00 -2.36054350e+00 5.33298069e+00 29 3.37620625e+00 -9.63562197e-01 4.84338590e+00 30 -1.66105744e+00 -6.23174726e-01 -3.35132356e+00 31 -9.23326186e-02 -5.37983886e+00 -8.16881054e-02 32 -2.14180275e+00 -3.29866381e+00 -1.87117201e+00 MIXED STRUCTURE (pbc=False)-- Species = Al Co Ni (Configuration in file "config-F-AlCoNi.xyz") ----------------------------------------------------------------------------------------------------- Energy = 2183.26632658 Forces: 1 -3.40663162e+02 -1.56522988e+02 -3.28306373e+02 2 3.50563745e+02 6.28637827e+02 -7.71367900e+02 3 1.35386234e+03 -1.77387043e+03 5.16986997e+02 4 -1.27168195e+03 1.32145296e+03 3.91680746e+02 5 -2.69286386e+03 4.58679658e+02 -4.56283780e+03 6 2.55282868e+02 -2.03264418e+02 -5.19576979e+02 7 2.69129033e+03 -4.85109820e+02 4.54262553e+03 8 -8.33054939e+02 -3.65311987e+02 4.07642657e+02 9 -3.22067231e+00 -5.60655926e-01 -3.35163937e+00 10 -9.55884401e+02 1.29817757e+02 -7.58772322e+02 11 2.95435438e+01 -2.08185883e+02 -1.44277215e+02 12 -4.23075525e+01 3.06096307e+01 -6.04784583e-01 13 1.62428939e+02 -3.43952255e+02 -2.80531526e+02 14 2.90037585e+00 5.49188606e+00 -4.02795852e+00 15 5.98347165e+02 5.66041208e+02 1.14198644e+02 16 8.45142781e+02 3.41688260e+02 9.52870166e+02 17 -1.41224343e+02 -7.99883812e+01 1.73650061e+02 18 -3.19522867e+02 -1.39559622e+02 -8.70106189e+02 19 -1.08625596e+03 -8.18984618e+02 6.90867457e+02 20 -3.39629267e+01 -6.27443509e+00 2.14323646e+01 21 3.49736306e+02 -1.72429684e+02 -4.52469766e+02 22 4.77455535e+01 4.57921096e+01 -5.25553556e+00 23 1.20126698e+01 -5.89661276e+01 6.08701054e+01 24 9.74424094e+02 4.63718497e+02 3.28018561e+02 25 -6.69328306e+01 -3.80963335e+01 1.00168370e+01 26 2.50943434e+02 2.22499928e+02 -2.41609017e+02 27 -1.96598937e+02 1.35877630e+02 6.37435119e+02 28 -4.75776740e+02 1.95685244e+02 4.11713349e+02 29 5.15945740e+02 2.24783331e+02 -3.69473188e+02 30 1.85317506e+03 -1.65851294e+02 -1.88541867e+03 31 3.25397983e+01 -4.00735753e+02 3.93249971e+02 32 -1.86593360e+03 6.46888751e+02 1.54472830e+03 MIXED STRUCTURE (pbc=True)-- Species = Al Co Ni (Configuration in file "config-T-AlCoNi.xyz") ----------------------------------------------------------------------------------------------------- Energy = 2298.00463036 Forces: 1 -3.04660797e+02 -4.15179682e+01 -4.06251569e+02 2 3.48354427e+02 6.29066174e+02 -7.67974365e+02 3 1.34835405e+03 -1.74870415e+03 5.29622295e+02 4 -1.26313478e+03 1.31710443e+03 3.90058260e+02 5 -2.69272595e+03 4.65602345e+02 -4.56144368e+03 6 2.54476946e+02 -2.04022638e+02 -5.14405576e+02 7 2.67310587e+03 -4.79887044e+02 4.53291126e+03 8 -8.33584316e+02 -3.66605183e+02 4.06830714e+02 9 1.85470109e+01 -6.54501718e+01 3.97500337e+01 10 -9.39187318e+02 9.69140240e+01 -7.70083700e+02 11 2.91071625e+01 -2.07019863e+02 -1.43221943e+02 12 -9.03102478e+01 -2.72895180e+02 -9.44188833e+01 13 1.62864330e+02 -3.44542933e+02 -2.77149767e+02 14 -5.20365032e+01 1.66473822e+00 -7.50318129e+00 15 5.70238121e+02 5.61998629e+02 1.14150292e+02 16 8.41703152e+02 3.33649914e+02 9.50170169e+02 17 -1.73332915e+02 2.53057151e+02 3.31256570e+02 18 -3.19879230e+02 -1.39442607e+02 -8.70329436e+02 19 -1.08819149e+03 -8.17838690e+02 6.90935978e+02 20 2.27061862e+01 -5.92368652e+00 7.06101930e+01 21 3.61525327e+02 1.05474511e+02 -5.96884756e+02 22 -6.07607445e+01 -8.15465319e+00 -5.33738290e+01 23 1.32705225e+01 -5.85146436e+01 5.63898813e+01 24 9.74987419e+02 4.63567893e+02 3.25228784e+02 25 -3.21075809e+00 1.49915280e+01 1.84083515e+01 26 2.58469008e+02 2.14430024e+01 -2.18188054e+02 27 -1.97406770e+02 1.35691918e+02 6.35025527e+02 28 -4.59678336e+02 2.35289792e+02 3.58617117e+02 29 5.15711453e+02 2.24581929e+02 -3.67989101e+02 30 1.85061332e+03 -1.65867509e+02 -1.88265054e+03 31 2.86492161e+01 -3.99977284e+02 3.88956306e+02 32 -1.79458336e+03 4.66266234e+02 1.69294666e+03 ================================================================================ VALGRIND OUTPUT ================================================================================ ==5773== Memcheck, a memory error detector ==5773== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==5773== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info ==5773== Command: python runner2.py EAM_Dynamo_PunYamakovMishin_2013_NiAlCo__MO_826591359508_000 ==5773== ==5773== Syscall param sched_getaffinity(mask) points to unaddressable byte(s) ==5773== at 0x4F3FF2F: sched_getaffinity@@GLIBC_2.3.4 (sched_getaffinity.c:36) ==5773== by 0x705438B: get_num_procs (in /usr/local/lib/python2.7/dist-packages/numpy/.libs/libopenblasp-r0-8dca6697.3.0.dev.so) ==5773== by 0x705447C: blas_get_cpu_number (in /usr/local/lib/python2.7/dist-packages/numpy/.libs/libopenblasp-r0-8dca6697.3.0.dev.so) ==5773== by 0x6E2C077: gotoblas_init (in /usr/local/lib/python2.7/dist-packages/numpy/.libs/libopenblasp-r0-8dca6697.3.0.dev.so) ==5773== by 0x4010732: call_init (dl-init.c:72) ==5773== by 0x4010732: _dl_init (dl-init.c:119) ==5773== by 0x40151FE: dl_open_worker (dl-open.c:522) ==5773== by 0x4FA32DE: _dl_catch_exception (dl-error-skeleton.c:196) ==5773== by 0x40147C9: _dl_open (dl-open.c:605) ==5773== by 0x544CF95: dlopen_doit (dlopen.c:66) ==5773== by 0x4FA32DE: _dl_catch_exception (dl-error-skeleton.c:196) ==5773== by 0x4FA336E: _dl_catch_error (dl-error-skeleton.c:215) ==5773== by 0x544D734: _dlerror_run (dlerror.c:162) ==5773== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==5773== ==5773== ==5773== HEAP SUMMARY: ==5773== in use at exit: 93,592,170 bytes in 4,434 blocks ==5773== total heap usage: 240,429 allocs, 235,995 frees, 181,148,958 bytes allocated ==5773== ==5773== LEAK SUMMARY: ==5773== definitely lost: 0 bytes in 0 blocks ==5773== indirectly lost: 0 bytes in 0 blocks ==5773== possibly lost: 182,735 bytes in 112 blocks ==5773== still reachable: 93,409,435 bytes in 4,322 blocks ==5773== suppressed: 0 bytes in 0 blocks ==5773== Rerun with --leak-check=full to see details of leaked memory ==5773== ==5773== For counts of detected and suppressed errors, rerun with: -v ==5773== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 2532 from 171) ================================================================================ 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.