Twostate-Verification.dfy(39,26): Error: target object may not be allocated
Execution trace:
    (0,0): anon0
Twostate-Verification.dfy(44,34): Error: target object may not be allocated
Execution trace:
    (0,0): anon0
Twostate-Verification.dfy(60,26): Error: receiver must be allocated in the state in which its fields are accessed
Execution trace:
    (0,0): anon0
    (0,0): anon3_Then
Twostate-Verification.dfy(60,26): Error: target object may not be allocated
Execution trace:
    (0,0): anon0
    (0,0): anon3_Then
Twostate-Verification.dfy(62,32): Error: receiver argument must be allocated in the state in which the function is invoked
Execution trace:
    (0,0): anon0
    (0,0): anon3_Else
Twostate-Verification.dfy(62,34): Error: target object may not be allocated
Execution trace:
    (0,0): anon0
    (0,0): anon3_Else
Twostate-Verification.dfy(78,15): Error: assertion violation
Execution trace:
    (0,0): anon0
Twostate-Verification.dfy(234,69): Error: target object may not be allocated
Execution trace:
    (0,0): anon0
    (0,0): anon4_Then
Twostate-Verification.dfy(234,80): Error: target object may not be allocated
Execution trace:
    (0,0): anon0
    (0,0): anon4_Then
Twostate-Verification.dfy(6,4): Error: parameter 0 ('c') must be allocated in the two-state lemma's previous state
Execution trace:
    (0,0): anon0
Twostate-Verification.dfy(13,17): Error: target object may not be allocated
Execution trace:
    (0,0): anon0

Dafny program verifier finished with 30 verified, 11 errors
