1. Method for determining a repetitive bit value pattern associated to a predetermined bit position of a sequence of data words, the data words comprising two or more bits in a bit order, a bit position describing a position within the bit order being indicative of a value represented by the bit at the bit position, based on a program loop information, the program loop information comprising a program expression for determining an updated data word of the sequence of data words, and iteration information derived from the program loop information, the iteration information indicating a number of loop iterations to be performed for generating the sequence of data words, comprising: determining, using the predetermined bit position, a sequence length value associated to the predetermined bit position based on a polynomial expression without performing all loop iterations; after determining the sequence length value, evaluating the program expression only for the number of loop iterations indicated by the sequence length value, to acquire updated bit values associated to the predetermined bit position; and using the updated bit values of the number of loop iterations to determine the repetitive bit value pattern.