ERROR: check for two identical species and eliminate one from the data

[jasminelmah]

Error arises when jumbling 100x (and selecting best likelihood) while performing global rearrangement. Only input order is changed between runs. Some runs produce a tree, others return this error.

[caseywdunn]

That error is from

phylip/phylip-3.697/src/contml.c

Line 603 in 343463d

if (vee <= 1.0e-10) {

.

vee is from node -> v, which is specified here:

phylip/phylip-3.697/src/phylip.h

Line 488 in 343463d

double v, deltav, ssq; /* ssq used only in contrast */

v is probably branch length. So it is saying that the branch is approximately 0, so some taxa are very similar.