/export/starexec/sandbox2/solver/bin/starexec_run_ttt2 /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files


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failure 'Failure("No result of SMT solver - maybe due to some flag of the solver? or the solver was not found in PATH?")' in subprocess 17770
failure 'Utilx.Process.Stop' in subprocess 17770
failure 'Failure("No result of SMT solver - maybe due to some flag of the solver? or the solver was not found in PATH?")' in subprocess 18084
failure 'Failure("No result of SMT solver - maybe due to some flag of the solver? or the solver was not found in PATH?")' in subprocess 18137
MAYBE

Problem:
 nthtail(n,l) -> cond(ge(n,length(l)),n,l)
 cond(true(),n,l) -> l
 cond(false(),n,l) -> tail(nthtail(s(n),l))
 tail(nil()) -> nil()
 tail(cons(x,l)) -> l
 length(nil()) -> 0()
 length(cons(x,l)) -> s(length(l))
 ge(u,0()) -> true()
 ge(0(),s(v)) -> false()
 ge(s(u),s(v)) -> ge(u,v)

Proof:
 Open