Newtypes.dfy(74,10): Error: cannot find witness that shows type is inhabited (only tried 0); try giving a hint through a 'witness' or 'ghost witness' clause
Execution trace:
    (0,0): anon0
    (0,0): anon4_Else
Newtypes.dfy(76,44): Error: possible division by zero
Execution trace:
    (0,0): anon0
    (0,0): anon7_Then
Newtypes.dfy(87,13): Error: result of operation might violate newtype constraint for 'char8'
Execution trace:
    (0,0): anon0
Newtypes.dfy(95,11): Error: result of operation might violate newtype constraint for 'char8'
Execution trace:
    (0,0): anon0
    (0,0): anon3_Then
Newtypes.dfy(97,13): Error: result of operation might violate newtype constraint for 'char8'
Execution trace:
    (0,0): anon0
    (0,0): anon3_Else
Newtypes.dfy(104,15): Error: result of operation might violate newtype constraint for 'char8'
Execution trace:
    (0,0): anon0
Newtypes.dfy(177,13): Error: result of operation might violate newtype constraint for 'Even'
Execution trace:
    (0,0): anon0
Newtypes.dfy(193,67): Error: index 0 out of range
Execution trace:
    (0,0): anon0
    Newtypes.dfy(182,23): anon29_Else
    Newtypes.dfy(183,23): anon30_Else
    Newtypes.dfy(184,26): anon31_Else
    (0,0): anon42_Then
    (0,0): anon43_Then
    (0,0): anon22
Newtypes.dfy(194,70): Error: index 1 out of range
Execution trace:
    (0,0): anon0
    Newtypes.dfy(182,23): anon29_Else
    Newtypes.dfy(183,23): anon30_Else
    Newtypes.dfy(184,26): anon31_Else
    (0,0): anon44_Then
    (0,0): anon45_Then
    (0,0): anon25
Newtypes.dfy(223,15): Error: new number of occurrences might be negative
Execution trace:
    (0,0): anon0
    (0,0): anon6_Then
Newtypes.dfy(226,39): Error: result of operation might violate newtype constraint for 'Even'
Execution trace:
    (0,0): anon0
    (0,0): anon8_Then
Newtypes.dfy(238,18): Error: result of operation might violate newtype constraint for 'N'
Execution trace:
    (0,0): anon0
    Newtypes.dfy(237,5): anon9_LoopHead
    (0,0): anon9_LoopBody
    (0,0): anon10_Then
Newtypes.dfy(278,18): Error: result of operation might violate newtype constraint for 'R'
Execution trace:
    (0,0): anon0
    Newtypes.dfy(277,5): anon9_LoopHead
    (0,0): anon9_LoopBody
    (0,0): anon10_Then

Dafny program verifier finished with 37 verified, 13 errors
