bar.bpl(28,3): Error: Non-interference check failed
Execution trace:
    bar.bpl(7,3): anon0
    (0,0): anon00
    bar.bpl(14,3): inline$Incr_1$0$A
    (0,0): inline$Impl_YieldChecker_PC_1$0$L0
bar.bpl(28,3): Error: Non-interference check failed
Execution trace:
    bar.bpl(38,3): anon0
    (0,0): anon00
    (0,0): inline$Impl_YieldChecker_PC_1$0$L0

Boogie program verifier finished with 8 verified, 2 errors