Test fail: beautify

[mclegrand]

Trying to compile adaptagrams, I hit the following issue:

~/adaptagrams/cola$ ./libtopology/tests/beautify random seed=1207906420 DAG depth=6 maxbranch=4 extraedgeprob0.002000 V=201 E=243 stress=3070.47 iteration=0 stress=2361.57 iteration=1 stress=2050.17 iteration=2 stress=1895.06 iteration=3 stress=1794.66 iteration=4 stress=1732.67 iteration=5 stress=1696.61 iteration=6 stress=1666.28 iteration=7 stress=1643.41 iteration=8 stress=1622.09 iteration=9 stress=1602.09 iteration=10 stress=1575.2 iteration=11 stress=1588.93 iteration=12 unconstrained layout ran in 0.33662 seconds Removing overlaps... done. Running libavoid to compute routes... writing svg file: beautify0.svg Wrote file "beautify0.svg" done. Libavoid ran in 1.09424 seconds makefeasible ran in 1.09703 seconds writing svg file: beautify1.svg Wrote file "beautify1.svg" beautify: ../libtopology/topology_graph.h:325: double topology::Segment::intersection(vpsc::Dim, double, const topology::EdgePoint*, const topology::EdgePoint*, double&) const: Assertion `denom!=0' failed. Aborted