Verification of predicates.chalice using parameters="" 

  37.5: Fold might fail because the definition of Cell.write1 does not hold. Insufficient fraction at 6.22 for Cell.x.
  55.5: Fold might fail because the definition of Cell.read1 does not hold. Insufficient fraction at 8.21 for Cell.x.
  66.3: The postcondition at 68.13 might not hold. Insufficient fraction at 68.13 for Cell.x.

The program did not fully verify; the smoke warnings might be misleading if contradictions are introduced by failing proof attempts of the verification.
  28.3: The end of method b3 is unreachable.
  49.3: The end of method b5 is unreachable.

Boogie program verifier finished with 3 errors and 2 smoke test warnings