Hello David,
rows can only be generated when
reason = GLP_IROWGEN or
reason = GLP_ICUTGEN.
cf. http://lists.gnu.org/archive/html/bug-glpk/2010-03/msg00000.html
Crash free catching of errors in the callback routine has been added in
glpk-java 1.0.13.
Best regards
Xypron
David Pérez wrote:
We´ve tested the java version of branch and cut API (glpk 4.43). We´ve an
iterative method in which we´ve to obtain an integer solution and enforce it
with a new constraint (the problem is a bilevel one). The new constraint is
based on the last integer solution and a dual problem associated to a second
level restriction.
When we add a new row to the original problem (the master one) on the callback
(called when GLP_IBINGO reason occurs) the API give us the following error:
Assertion failed: tree!=tree
glpapi01.c: 293
we suppose that we are making a wrong use of the API.
Thanks in advance. David.
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