YES


Termination: (Ranking Functions Found)
------------
f940_0_gopher_NONNULL: < < arg2 > >
f880_0_createTree_GE: < < - arg2 + arg4 >, < - arg2 + arg4 >, < arg4 - arg5 >, < arg4 - arg5 > >
f1019_0_insert_GT: < < arg1 >, < arg1 > >