Projects Combinatorial Testing Covering Array Library
Automated Combinatorial Testing for Software
Covering Array Library
Although most combinatorial testing problems have varying numbers of values per variable, in some cases all variables have the same number of values and a pre-computed array can be found.
A library of pre-computed covering arrays can be found here. The arrays were computed with IPOG-F, a variant of the IPOG algorithm. IPOG and IPOG-F are both available in the ACTS tool, which can be downloaded from this web site. Arrays are available for t=2 to t=5, with 2 to 6 values per variable, and for t=6 with 2 to 5 values per variable.
In many cases the arrays on this site are the smallest known, but newer algorithms may produce better results. Charles Colbourn maintains a collection here of the smallest uniform covering array sizes for up to 20,000 variables for t=2, and up to 10,000 for t=3 through t=6. Note that Colbourn's database records the best known array sizes but does not include the arrays.
Jose Torres-Jimenez has a large collection of covering arrays available for download at: http://www.tamps.cinvestav.mx/~jtj/
Created May 24, 2016, Updated March 21, 2019