The tests fail due to an unexpected result:

test_2vi_unaln_overlap: a1[959] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[960] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[961] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[967] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[968] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[969] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[975] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[976] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[977] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[983] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[984] = 103.0 != 123.0
test_2vi_unaln_overlap: a1[985] = 103.0 != 123.0
FAILED: 615 errors