ControlStructures.dfy(8,2): Error: missing case in match statement: Purple
ControlStructures.dfy(8,2): Error: missing case in match statement: Blue
ControlStructures.dfy(17,2): Error: missing case in match statement: Purple
ControlStructures.dfy(46,4): Error: missing case in match statement: Red
ControlStructures.dfy(54,2): Error: missing case in match expression: Red
ControlStructures.dfy(75,2): Error: alternative cases fail to cover all possibilities
ControlStructures.dfy(218,17): Error: assertion might not hold
ControlStructures.dfy(235,20): Error: assertion might not hold
ControlStructures.dfy(238,29): Error: assertion might not hold
ControlStructures.dfy(241,16): Error: assertion might not hold
ControlStructures.dfy(350,2): Error: cannot prove termination; try supplying a decreases clause for the loop
ControlStructures.dfy(381,2): Error: cannot prove termination; try supplying a decreases clause for the loop
ControlStructures.dfy(448,16): Error: this invariant could not be proved to be maintained by the loop
 Related message: loop invariant violation

Dafny program verifier finished with 18 verified, 13 errors
