RealTypes.dfy(8,23): Error: assertion violation
Execution trace:
    (0,0): anon0
RealTypes.dfy(14,12): Error: possible division by zero
Execution trace:
    (0,0): anon0
    RealTypes.dfy(13,23): anon3_Else
    (0,0): anon2
RealTypes.dfy(14,20): Error: assertion violation
Execution trace:
    (0,0): anon0
    RealTypes.dfy(13,23): anon3_Else
    (0,0): anon2
RealTypes.dfy(22,12): Error: assertion violation
Execution trace:
    (0,0): anon0

Dafny program verifier finished with 6 verified, 4 errors