/export/starexec/sandbox/solver/bin/starexec_run_ttt2-1.17+nonreach /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files


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MAYBE

Problem:
 a__fib(N) -> a__sel(mark(N),a__fib1(s(0()),s(0())))
 a__fib1(X,Y) -> cons(mark(X),fib1(Y,add(X,Y)))
 a__add(0(),X) -> mark(X)
 a__add(s(X),Y) -> s(a__add(mark(X),mark(Y)))
 a__sel(0(),cons(X,XS)) -> mark(X)
 a__sel(s(N),cons(X,XS)) -> a__sel(mark(N),mark(XS))
 mark(fib(X)) -> a__fib(mark(X))
 mark(sel(X1,X2)) -> a__sel(mark(X1),mark(X2))
 mark(fib1(X1,X2)) -> a__fib1(mark(X1),mark(X2))
 mark(add(X1,X2)) -> a__add(mark(X1),mark(X2))
 mark(s(X)) -> s(mark(X))
 mark(0()) -> 0()
 mark(cons(X1,X2)) -> cons(mark(X1),X2)
 a__fib(X) -> fib(X)
 a__sel(X1,X2) -> sel(X1,X2)
 a__fib1(X1,X2) -> fib1(X1,X2)
 a__add(X1,X2) -> add(X1,X2)

Proof:
 Open