testlist <- list(period = -5.32366450569427e-75, t = c(1.11594364900225e-12,  -1.14137417780098e-37, 1.68654281813767e+291, -3.13578367780721e+176,  1.82332862683938e+202, 1.49719872388877e+246, -3.45421228814767e+131,  -9.32000118429833e-76, 2.57097509353068e+177, -Inf, -8.49065865505429e-81,  -3.66479009240967e-253, -1.276320760502e+34, -6.55017625598495e+38,  4.72308493968934e-272, 2.53742309326169e+195, -3.07273246579266e-129,  4.76862057710465e+178, 2.59817977609304e-215, NA, 1.60331940022882e-146,  2.4354906772031e-152, NaN, 5.58071707349585e-219, -5.86106485320236e-230,  -2.32528528404502e+52, 1732812305.06707, 4.48774285154507e+229,  3.03644869956666e+177, 1.99263011928304e+80, 8.56110374684269e-176,  -11908.3152052833, Inf, -9.06640783235056e+235, 2.03288216519384e-81,  2.55721213764075e-249, 4.19911139148226e-110, 5.2343681573229e-271,  1.18065834447795e+121, -6.55870954951334e-139, 2.37697566683682e-223,  -7.19907505347392e-146, 4.2344348799418e+63, -2.31547472634254e+95,  -4.20261274461159e-157, 1.54777808457763e-263, -2.3383325647858e-108,  2.61895998052988e+44, 7.39778311447987e-106, -1.74231404324895e+52,  -8.80771855778151e-187, -5.63666273446166e-266, NA, -6.15745481872192e-24,  -2.96268815847633e-195, 1.03091402764601e-121, -3.87521867204354e-200,  -1.71945291714989e-90, 9.06233666178265e-195, 3.20855903260849e+223,  6.08434608488155e+219, -7.56151899400148e-50, 2.04127568137001e-104,  -3.41206075026522e+296, 2.87539518166448e-52, 8.31140170291886e+275,  -1.52574370544408e-173, 5.22512956851751e+293, 3.5002099423505e+236,  0), tol = -1.29620622331416e+131, x = c(-6.12452363914144e+218,  1.23375296874997e-26, 5.1933327169296e-199, -6.49770865188051e-206,  -1.72323844826349e-121, -Inf, -7.12003808118201e+247, -2.65691263851162e-187,  -2.53015114236565e+181, -1.95321036163742e-14, 1.46203573532214e-35,  -4.68280035577655e-51, -14093706420.8771, -2.96606745554162e+51,  -6.90041224979581e+99, -2.09196509767361e+155, 1.19529984038289e-22,  8.58273553778559e-176, 2.93714326043721e+276, 1.48244530233299e+280,  9.54573925300176e-163, -2.58234032288236e-249, -2.45660685462926e+31,  -3.11828290074064e-298, 0.0116553337304898, -7.92035278796298e-256,  -1.09247691718815e+99, NA, 8.75088878753444e-155, -3.46510396399212e+109,  -2.2962545423662e-271, -Inf, 8.24358498794794e-45, 2.3301498681457e+125,  1.64127907549935e-140, -1.08856736507154e+285, 5.01359454102946e-98,  6.95341248671264e+105, 1.00307112334308e+282, -1.39660413401982e-216,  -5.61831044118304e+187, 8.3938890649602e-23, -3.8363598366577e-110,  0.0063273754029138, 3.14924638989515e+66, 5.93502834560529e-170,  1.28609246990166e+44, 2.10593232656711e+284, -6.56330852909618e+264,  -1.21810301852825e-135, -8.4268928044364e+93, -4.78502193565154e-307,  -1.92574832404508e+247, -9.44663757539178e+114, 9.76312730853575e-212,  -1.77692560227971e-150, 4458166058045.48, 4.28763374395676e+279,  2.42659321096836e+290, 1.08846932305751e+108, -3.87613813718574e-261,  -1.65307337661386e-138, -5.94143971016569e-224, -4.36303977606889e-73,  4.41396069974685e-58, 5.80180700926162e-219, -2.04831074577196e-255,  -1.51790700574546e+308, -2.71744028721767e+108, 9.66445903179026e+152,  -3.07287586736947e+47, -3.63283488580936e+59, Inf, 8.73563245132291e+304,  1.20802728507272e+49, 1.50723697084744e-28, -3.21495544152296e-99,  3.0115811748156e-75, 2.25107012582316e-105, -Inf, 9.37806245670583e+63,  3.78823339403556e+241, 2.85138212321082e-237, -8.30322371747027e+165,  -3.98252901363176e+198, 2.88562654884994e-215, -3.82071294211506e-83,  -3.65249270973772e-112, 1224924.28718911, 6.84631888666921e+189,  -1.74104921345601e-268, -1.73721923403035e+261, 3.93998357977901e+306,  0), y = c(-5.00663705707207e-195, -1.01671760026371e+302, -5.78915422989313e+183,  -3.64369617721631e-169, -1.00892201770744e-31, 8.24745400476366e-87,  -2.20673660984261e+76, -1.56475247672868e-105, 4.99719866268626e-59,  5.00181274406618e+103, 2.87508052752734, -8.52753234898494e-67,  8.28651414359197e-244, 1.35399871518845e+239, -1.98208281373063e-212,  -5.01395151931984e-31, 5.84153292445646e+72, -5.21173898421121e-26,  1.61477161479074e+305, -3.9934563523138e+167, 1.42295816313101e+125,  -6.23259033964236e-279, 1.27154198650206e+54, 2.42644090868382e-26,  -1.33451552014512e-90, -3.03391058896647e+40, 8.19987488983399e-163,  3.35198779801005e+145, -3.25145874682219e+236, 1.57941690076158e-284,  -1.04967906289337e-130, NaN, 3.82687137046796e+276, -4.02295754994521e+176,  -1.74649306662412e+40, 5.94971100871242e-15, -6.00145968126334e+302,  9.97225490647156e+299, 8.0711908704843e-236, -1.47969398567485e+63,  -4.60316500165254e+89, 1.59516360084759e+152, 9.46894356074347e+134,  -9.72937422308099e+153, -5.53939780502891e-32, 407696729.764034,  -2.31596991880418e+132, -4.02112482320839e-28, -Inf, -1.21954441693494e-204,  -5.38901330331498e-58, -5.38795205674926e-14, -5.60174276785283e-58,  1.41650342051204e-93, 3.73754777350264e-304, 3.34632511840137e+125,  6.21536045365735e-120, 3260350.22046612, 6.97600541357449e+238,  -5.11382053883394e+34, 2.1990052480646e-274, 1.47733542923684e+163,  2.69261125632934e-89, 2.21119167830258e-54, 7.89197659993199e-61,  1.07955897907476e-225, -5.97770098616299e+249, 2.70500495488498e-173,  2.96670083177823e-65, 1.57941690076158e-284, -1.57883430705051e-299,  8.0101370917787e+230, -5.78267396229931e+296, 0.000278464157949501,  -1.22704788903572e-187, -4.03733107554683e+96, -7.79978364609585e-140,  -2.48846279600469e+262, -6.60716586632144e-154, 1.9280988101406e+174,  4.78677195340765e+99, -7.363830953459e+115, -9.00279524523685e-252,  9.64941018688705e-159, 1.46888396544516e-21, -1.552579504676e-297,  4.13398320844997e-79, -1.82226419118111e-49, 6.49725063064729e-126,  1.57944187036483e+30, -1.63298646818904e+212, -5.91116013237384e-209,  -2.12001397624648e+261, 6.15870398928097e+140, 2.46523363058227e-149,  1.30050890748753e+297, 0))
result <- do.call(amt:::track_immobility,testlist)
str(result)