Basics.dfy(45,14): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon3_Else
Basics.dfy(69,42): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon13_Then
    (0,0): anon14_Then
    (0,0): anon15_Then
    Basics.dfy(69,72): anon16_Else
    Basics.dfy(69,82): anon17_Else
    Basics.dfy(69,95): anon18_Else
    (0,0): anon12
Basics.dfy(93,14): Error: assertion violation
Execution trace:
    (0,0): anon0
    Basics.dfy(83,14): anon27_Else
    (0,0): anon2
    Basics.dfy(84,14): anon28_Else
    (0,0): anon4
    (0,0): anon29_Then
    Basics.dfy(89,12): anon30_Else
    (0,0): anon8
    Basics.dfy(90,12): anon32_Else
    (0,0): anon11
    Basics.dfy(91,13): anon34_Else
    (0,0): anon35_Then
    (0,0): anon15
Basics.dfy(99,14): Error: assertion violation
Execution trace:
    (0,0): anon0
    Basics.dfy(83,14): anon27_Else
    (0,0): anon2
    Basics.dfy(84,14): anon28_Else
    (0,0): anon4
    (0,0): anon29_Else
    Basics.dfy(95,18): anon36_Else
    (0,0): anon19
    Basics.dfy(96,20): anon38_Else
    (0,0): anon22
    Basics.dfy(97,19): anon40_Else
    (0,0): anon41_Then
    (0,0): anon26
Basics.dfy(112,28): Error: target object may be null
Execution trace:
    (0,0): anon0
    Basics.dfy(105,20): anon13_Else
    (0,0): anon2
    Basics.dfy(106,20): anon14_Else
    (0,0): anon4
    Basics.dfy(107,24): anon15_Else
    (0,0): anon6
    (0,0): anon16_Then
Basics.dfy(114,14): Error: target object may be null
Execution trace:
    (0,0): anon0
    Basics.dfy(105,20): anon13_Else
    (0,0): anon2
    Basics.dfy(106,20): anon14_Else
    (0,0): anon4
    Basics.dfy(107,24): anon15_Else
    (0,0): anon6
    (0,0): anon16_Else
Basics.dfy(149,16): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon10_Then
Basics.dfy(168,10): Error: when left-hand sides 0 and 1 may refer to the same location, they must be assigned the same value
Execution trace:
    (0,0): anon0
    (0,0): anon10_Then
    (0,0): anon3
    (0,0): anon11_Then
    (0,0): anon6
    (0,0): anon12_Then
    (0,0): anon9
Basics.dfy(182,10): Error: when left-hand sides 0 and 1 refer to the same location, they must be assigned the same value
Execution trace:
    (0,0): anon0
Basics.dfy(194,19): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon11_Then
Basics.dfy(196,10): Error: assignment may update an object not in the enclosing context's modifies clause
Execution trace:
    (0,0): anon0
    (0,0): anon3
Basics.dfy(196,10): Error: target object may be null
Execution trace:
    (0,0): anon0
    (0,0): anon3
Basics.dfy(201,12): Error: left-hand sides 0 and 1 may refer to the same location
Execution trace:
    (0,0): anon0
    (0,0): anon11_Then
    (0,0): anon3
    (0,0): anon12_Then
Basics.dfy(212,15): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon11_Then
    (0,0): anon3
    (0,0): anon12_Else
    (0,0): anon6
    (0,0): anon13_Then
    (0,0): anon8
    (0,0): anon14_Then
Basics.dfy(274,10): Error: when left-hand sides 0 and 1 refer to the same location, they must be assigned the same value
Execution trace:
    (0,0): anon0
Basics.dfy(465,12): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon4_Then
    (0,0): anon3
Basics.dfy(476,19): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon4_Else
Basics.dfy(478,12): Error: assertion violation
Execution trace:
    (0,0): anon0
    (0,0): anon4_Then
    (0,0): anon3

Dafny program verifier finished with 63 verified, 18 errors