never {
s0_init:
    if
    :: (q) && !(s) -> goto s2
    :: !(s) -> goto s0_init
    fi;
s2:
    if
    :: !(p) && (r) && (s) -> goto accept_s5
    :: !(p) && (r) && !(s) -> goto s4
    :: !(q) && !(r) && !(s) -> goto s2
    fi;
s4:
    if
    :: !(p) && (s) -> goto accept_s5
    :: !(p) && !(s) -> goto s4
    fi;
accept_s5:
    if
    :: !(p) -> goto accept_s5
    fi;
}