[salderwe@schrodinger TriggerEff]$ ./test.py 
(double)0.00000000000000000e+00
Info in <TCanvas::Print>: png file test.png has been created

 *** Break *** segmentation violation



===========================================================
There was a crash.
This is the entire stack trace of all threads:
===========================================================
#0  0x0000003fb16ba347 in __libc_waitpid (pid=<optimized out>, stat_loc=stat_loc
entry=0x7fff44c6ddc0, options=options
entry=0) at ../sysdeps/unix/sysv/linux/waitpid.c:41
#1  0x0000003fb164143e in do_system (line=0x3840090 "/etc/root/gdb-backtrace.sh 4081 1>&2") at ../sysdeps/posix/system.c:149
#2  0x0000003fb1641800 in __libc_system (line=<optimized out>) at ../sysdeps/posix/system.c:190
#3  0x00007f290cf0ee18 in TUnixSystem::StackTrace() () from /opt/HEP45/lib/root/libCore.so
#4  0x00007f290cf10f73 in TUnixSystem::DispatchSignals(ESignals) () from /opt/HEP45/lib/root/libCore.so
#5  <signal handler called>
#6  0x00007f290cebd5d6 in THashTable::FindObject(TObject const*) const () from /opt/HEP45/lib/root/libCore.so
#7  0x00007f290ceb9118 in TMap::GetValue(TObject const*) const () from /opt/HEP45/lib/root/libCore.so
#8  0x00007f290db28b67 in TFile::SetCacheRead(TFileCacheRead*, TObject*, TFile::ECacheAction) () from /opt/HEP45/lib/root/libRIO.so
#9  0x00007f290d7733b6 in TTreeCache::~TTreeCache() () from /opt/HEP45/lib/root/libTree.so
#10 0x00007f290d773439 in TTreeCache::~TTreeCache() () from /opt/HEP45/lib/root/libTree.so
#11 0x00007f290db2d286 in TFile::~TFile() () from /opt/HEP45/lib/root/libRIO.so
#12 0x00007f290db2d549 in TFile::~TFile() () from /opt/HEP45/lib/root/libRIO.so
#13 0x00007f290ceb61f9 in TCollection::GarbageCollect(TObject*) () from /opt/HEP45/lib/root/libCore.so
#14 0x00007f290ceba495 in TList::Delete(char const*) () from /opt/HEP45/lib/root/libCore.so
#15 0x00007f290ce5c0bf in TROOT::~TROOT() () from /opt/HEP45/lib/root/libCore.so
#16 0x0000003fb1638b81 in __run_exit_handlers (status=0, listp=0x3fb19b0688, run_list_atexit=run_list_atexit
entry=true) at exit.c:78
#17 0x0000003fb1638c05 in __GI_exit (status=<optimized out>) at exit.c:100
#18 0x0000003fb162173c in __libc_start_main (main=0x4006c0 <main>, argc=2, ubp_av=0x7fff44c70a78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff44c70a68) at libc-start.c:258
#19 0x00000000004006f1 in _start ()
===========================================================


The lines below might hint at the cause of the crash.
If they do not help you then please submit a bug report at
http://root.cern.ch/bugs. Please post the ENTIRE stack trace
from above as an attachment in addition to anything else
that might help us fixing this issue.
===========================================================
#6  0x00007f290cebd5d6 in THashTable::FindObject(TObject const*) const () from /opt/HEP45/lib/root/libCore.so
#7  0x00007f290ceb9118 in TMap::GetValue(TObject const*) const () from /opt/HEP45/lib/root/libCore.so
#8  0x00007f290db28b67 in TFile::SetCacheRead(TFileCacheRead*, TObject*, TFile::ECacheAction) () from /opt/HEP45/lib/root/libRIO.so
#9  0x00007f290d7733b6 in TTreeCache::~TTreeCache() () from /opt/HEP45/lib/root/libTree.so
#10 0x00007f290d773439 in TTreeCache::~TTreeCache() () from /opt/HEP45/lib/root/libTree.so
#11 0x00007f290db2d286 in TFile::~TFile() () from /opt/HEP45/lib/root/libRIO.so
#12 0x00007f290db2d549 in TFile::~TFile() () from /opt/HEP45/lib/root/libRIO.so
#13 0x00007f290ceb61f9 in TCollection::GarbageCollect(TObject*) () from /opt/HEP45/lib/root/libCore.so
#14 0x00007f290ceba495 in TList::Delete(char const*) () from /opt/HEP45/lib/root/libCore.so
#15 0x00007f290ce5c0bf in TROOT::~TROOT() () from /opt/HEP45/lib/root/libCore.so
#16 0x0000003fb1638b81 in __run_exit_handlers (status=0, listp=0x3fb19b0688, run_list_atexit=run_list_atexit
entry=true) at exit.c:78
#17 0x0000003fb1638c05 in __GI_exit (status=<optimized out>) at exit.c:100
#18 0x0000003fb162173c in __libc_start_main (main=0x4006c0 <main>, argc=2, ubp_av=0x7fff44c70a78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff44c70a68) at libc-start.c:258
#19 0x00000000004006f1 in _start ()
===========================================================