ExpandedGuardednessNeg.dfy(8,17): Error: cannot prove termination; try supplying a decreases clause (note that calls cannot be co-recursive in this context)
ExpandedGuardednessNeg.dfy(8,17): Error: decreases expression must be bounded below by 0
ExpandedGuardednessNeg.dfy(6,20): Related location: this proposition could not be proved
ExpandedGuardednessNeg.dfy(13,16): Error: cannot prove termination; try supplying a decreases clause
ExpandedGuardednessNeg.dfy(13,16): Error: decreases expression must be bounded below by 0
ExpandedGuardednessNeg.dfy(11,27): Related location: this proposition could not be proved

Dafny program verifier finished with 0 verified, 4 errors
