Processing command (at Snapshots2.v0.dfy(3,4)) assert (forall<alpha> $o: ref, $f: Field alpha :: false ==> $_Frame[$o, $f]);
  >>> DoNothingToAssert
Processing command (at Snapshots2.v0.dfy(4,10)) assert false;
  >>> DoNothingToAssert
Processing command (at Snapshots2.v0.dfy(11,11)) assert true;
  >>> DoNothingToAssert
Processing command (at Snapshots2.v0.dfy(11,15)) assert _module.__default.P($LS($LS($LZ)), $Heap) <==> _module.__default.Q($LS($LS($LZ)), $Heap);
  >>> DoNothingToAssert
Processing command (at Snapshots2.v0.dfy(14,11)) assert true;
  >>> DoNothingToAssert
Processing command (at Snapshots2.v0.dfy(14,15)) assert _module.__default.Q($LS($LS($LZ)), $Heap) <==> Lit(_module.__default.R($Heap));
  >>> DoNothingToAssert
Processing command (at Snapshots2.v0.dfy(18,3)) assert true;
  >>> DoNothingToAssert

Dafny program verifier finished with 6 verified, 0 errors
Processing call to procedure IntraModuleCall$$_module.__default.N in implementation Impl$$_module.__default.M (at Snapshots2.v1.dfy(3,4)):
  >>> added after: a##cached##0 := a##cached##0 && false;
Processing implementation CheckWellformed$$_module.__default.P (at Snapshots2.v1.dfy(10,11)):
  >>> added after assuming the current precondition: a##cached##0 := a##cached##0 && false;
Processing implementation CheckWellformed$$_module.__default.Q (at Snapshots2.v1.dfy(13,11)):
  >>> added after assuming the current precondition: a##cached##0 := a##cached##0 && false;
Processing command (at Snapshots2.v1.dfy(18,3)) assert true;
  >>> MarkAsFullyVerified
Processing command (at Snapshots2.v1.dfy(3,4)) assert (forall<alpha> $o: ref, $f: Field alpha :: false ==> $_Frame[$o, $f]);
  >>> MarkAsFullyVerified
Processing command (at Snapshots2.v1.dfy(4,10)) assert false;
  >>> DoNothingToAssert
Snapshots2.v1.dfy(4,9): Error: assertion violation
Execution trace:
    (0,0): anon0
Processing command (at Snapshots2.v1.dfy(11,11)) assert true;
  >>> DoNothingToAssert
Processing command (at Snapshots2.v1.dfy(11,15)) assert _module.__default.P($LS($LS($LZ)), $Heap) <==> _module.__default.Q($LS($LS($LZ)), $Heap);
  >>> DoNothingToAssert
Processing command (at Snapshots2.v1.dfy(14,11)) assert true;
  >>> DoNothingToAssert
Processing command (at Snapshots2.v1.dfy(14,15)) assert _module.__default.Q($LS($LS($LZ)), $Heap) <==> Lit(_module.__default.R($Heap));
  >>> DoNothingToAssert

Dafny program verifier finished with 5 verified, 1 error