Hi, For the following instance, z3 https://github.com/Z3Prover/z3/commit/c2b7b58c781106c419b8b4af60534869d15bcb4b debug build ``` $ z3 small.smt2 ASSERTION VIOLATION File: ../src/util/vector.h Line: 912 idx < size() (C)ontinue, (A)bort, (S)top, (T)hrow exception, Invoke (G)DB a $ cat small.smt2 (set-option :opt.priority box) (declare-const a Real) (declare-const b Real) (assert (< 0 b)) (maximize (mod 0 0)) (minimize (mod 1 (to_int a))) (check-sat) ```