-------------------- VarMapFixPoint.bpl -------------------- 
VarMapFixPoint.bpl(11,5): Error BP5005: This loop invariant might not be maintained by the loop.
Execution trace:
    VarMapFixPoint.bpl(5,3): start
    VarMapFixPoint.bpl(10,3): LoopHead
    VarMapFixPoint.bpl(14,3): LoopBody

Boogie program verifier finished with 1 verified, 1 error
 
-------------------- TestIntervals.bpl -------------------- 
TestIntervals.bpl(23,3): Error BP5001: This assertion might not hold.
Execution trace:
    TestIntervals.bpl(5,5): anon0
    TestIntervals.bpl(6,3): anon9_LoopHead
    TestIntervals.bpl(12,14): anon10_Then
    TestIntervals.bpl(13,14): anon11_Then
    TestIntervals.bpl(14,14): anon12_Then
    TestIntervals.bpl(17,5): anon8

Boogie program verifier finished with 0 verified, 1 error