/export/starexec/sandbox2/solver/bin/starexec_run_ttt2-1.17+nonreach /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files


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MAYBE

Problem:
 diff(x,y) -> cond1(equal(x,y),x,y)
 cond1(true(),x,y) -> 0()
 cond1(false(),x,y) -> cond2(gt(x,y),x,y)
 cond2(true(),x,y) -> s(diff(x,s(y)))
 cond2(false(),x,y) -> s(diff(s(x),y))
 gt(0(),v) -> false()
 gt(s(u),0()) -> true()
 gt(s(u),s(v)) -> gt(u,v)
 equal(0(),0()) -> true()
 equal(s(x),0()) -> false()
 equal(0(),s(y)) -> false()
 equal(s(x),s(y)) -> equal(x,y)

Proof:
 Open