const int K = 0;

label "not_end" = x<N;

// RESULT: 1.0
P=? [ F "end" ]

// RESULT: 1.0
P=? [ F x=(N+K) ]

// RESULT: 0.0
P=? [ F x=(N+K+1) ]

// RESULT: 1.0
P=? [ "not_end" U "end" ]