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Z3 smt.arith.solver=1 assertion violation on QF_UFLRA formula in ../src/smt/smt_internalizer.cpp line 771 #2771

@muchang

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@muchang

Hi,
For this formula,

(declare-fun a () Real)
(declare-fun b (Real) Real)
(assert (distinct (b a) (/ 0 a)))
(check-sat)

Z3 smt.arith.solver=1 throws out an assertion violation:

(smt.diff_logic: non-diff logic expression (/ 0.0 a))
ASSERTION VIOLATION
File: ../src/smt/smt_internalizer.cpp
Line: 771
e_internalized(n)
(C)ontinue, (A)bort, (S)top, (T)hrow exception, Invoke (G)DB

OS: Ubuntu 18.04
Revision: 7b0327d

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