splitting-picks-the-right-tokens.dfy(9,11): Info: Selected triggers: {Id(x)}
splitting-picks-the-right-tokens.dfy(16,11): Info: Selected triggers: {Id(x)}
splitting-picks-the-right-tokens.dfy(20,12): Error: a precondition for this call could not be proved
splitting-picks-the-right-tokens.dfy(16,11): Related location: this is the precondition that could not be proved
splitting-picks-the-right-tokens.dfy(22,13): Error: a precondition for this call could not be proved
splitting-picks-the-right-tokens.dfy(9,11): Related location: this is the precondition that could not be proved

Dafny program verifier finished with 0 verified, 2 errors
