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Thread 1 (process 11892):
#0  0x4001e416 in __kernel_vsyscall ()
No symbol table info available.
#1  0x404fc941 in raise () from /lib/libc.so.6
No symbol table info available.
#2  0x404ffe42 in abort () from /lib/libc.so.6
No symbol table info available.
#3  0x404f58e8 in __assert_fail () from /lib/libc.so.6
No symbol table info available.
#4  0x40198e2c in LockSemaphoreInfo () from /usr/lib/libGraphicsMagick.so.3
No symbol table info available.
#5  0x401a3bae in GetTypeInfo () from /usr/lib/libGraphicsMagick.so.3
No symbol table info available.
#6  0x400cb0f7 in ?? () from /usr/lib/libGraphicsMagick.so.3
No symbol table info available.
#7  0x0a0005f0 in ?? ()
No symbol table info available.
#8  0x09ffef70 in ?? ()
No symbol table info available.
#9  0xbff3d2c8 in ?? ()
No symbol table info available.
#10 0x40166d86 in MagickMalloc () from /usr/lib/libGraphicsMagick.so.3
No symbol table info available.
#11 0x400cbab6 in GetTypeMetrics () from /usr/lib/libGraphicsMagick.so.3
No symbol table info available.
#12 0x4006ac87 in Magick::Image::fontTypeMetrics ()
   from /usr/lib/libGraphicsMagick++.so.3
No symbol table info available.
#13 0x0804fa88 in ?? ()
No symbol table info available.
#14 0x08050891 in ?? ()
No symbol table info available.
#15 0x08055111 in ?? ()
No symbol table info available.
#16 0x0804b482 in ?? ()
No symbol table info available.
#17 0x0804c6d6 in ?? ()
No symbol table info available.
#18 0x404e8ce7 in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#19 0x0804b3c1 in ?? ()
No symbol table info available.