SelectiveChecking.bpl(19,3): Error BP5001: This assertion might not hold.
Execution trace:
    SelectiveChecking.bpl(17,3): anon0
SelectiveChecking.bpl(32,3): Error BP5001: This assertion might not hold.
Execution trace:
    SelectiveChecking.bpl(26,3): anon0
    SelectiveChecking.bpl(29,5): anon3_Then
    SelectiveChecking.bpl(32,3): anon2
SelectiveChecking.bpl(39,3): Error BP5001: This assertion might not hold.
Execution trace:
    SelectiveChecking.bpl(39,3): anon0
SelectiveChecking.bpl(41,3): Error BP5001: This assertion might not hold.
Execution trace:
    SelectiveChecking.bpl(39,3): anon0

Boogie program verifier finished with 1 verified, 4 errors