#NEXUS

BEGIN TREES;

Tree tree1 = [&U]((1,4,3),2);
Tree tree2 = [&U]((1,),(4,3));

END;


BEGIN PHYLONET;

SymmetricDifference tree1 tree2;


END;
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Error at [13,21]: Taxon '2' in network 'tree1' does not appear in the network 'tree2'.

Error at [13,27]: Taxon '[unnamed]' in network 'tree2' does not appear in the network 'tree1'.