#0  0xb7de70e3 in std::_Rb_tree_increment () from /usr/lib/libstdc++.so.6
#1  0x08061946 in ?? ()
#2  0x080619fe in ?? ()
#3  0x08055b94 in ?? ()
#4  0x080580cf in ?? ()
#5  0x08081c3f in ?? ()
#6  0x0804dd91 in ?? ()
#7  0x0804dfac in ?? ()
#8  0x0808c786 in ?? ()
#9  0x0804df4f in ?? ()
#10 0x0804e4bd in ?? ()
#11 0xb7c0a450 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#12 0x0804c0f1 in ?? ()