ComputationsNeg.dfy(7,2): Error: failure to decrease termination measure
Execution trace:
    (0,0): anon0
    (0,0): anon4_Else
ComputationsNeg.dfy(11,0): Error BP5003: A postcondition might not hold on this return path.
ComputationsNeg.dfy(10,16): Related location: This is the postcondition that might not hold.
Execution trace:
    (0,0): anon0
ComputationsNeg.dfy(23,0): Error BP5003: A postcondition might not hold on this return path.
ComputationsNeg.dfy(22,10): Related location: This is the postcondition that might not hold.
Execution trace:
    (0,0): anon0
ComputationsNeg.dfy(36,12): Error: assertion violation
Execution trace:
    (0,0): anon0
ComputationsNeg.dfy(45,12): Error: assertion violation
Execution trace:
    (0,0): anon0

Dafny program verifier finished with 7 verified, 5 errors