Alain Lehmann

LazyConstraint based MIP yields incorrect optimum

6

**Describe the bug** Solving a MIP with lazy constraints yields a sub optimal solution. Yet, the solver reports the solution to be optimal. My assumption is that adding all constraints...

Lazy and generated constraint model much slower than complete model

7

While I do understand a certain overhead of lazy constraints, the following example seems overly drastic to me. Maybe there is some issue with lazy constraint handling, or maybe I...