Structured.bpl(254,14): Error BP5003: A postcondition might not hold on this return path.
Structured.bpl(245,3): Related location: This is the postcondition that might not hold.
Execution trace:
    Structured.bpl(246,5): anon0
    Structured.bpl(248,5): anon6_LoopBody
    Structured.bpl(249,7): anon7_LoopBody
    Structured.bpl(250,11): anon8_Then
    Structured.bpl(254,14): anon9_Then
Structured.bpl(305,3): Error BP5001: This assertion might not hold.
Execution trace:
    Structured.bpl(301,5): anon0
    Structured.bpl(302,3): anon3_Else
    Structured.bpl(305,3): anon2
Structured.bpl(313,7): Error BP5001: This assertion might not hold.
Execution trace:
    Structured.bpl(310,3): anon0
    Structured.bpl(310,3): anon1_Then
    Structured.bpl(311,5): A

Boogie program verifier finished with 16 verified, 3 errors