Z3: use qe-light and 2 rounds of elim unconstrained vars
MODIFY
smt/solver.cpp
smt/solver.cpp
@@ -344,7 +344,10 @@ void solver_init() {
"propagate-values",
"simplify",
"elim-uncnstr",
-// "qe2",
+ "qe-light",
+ "simplify",
+ "elim-uncnstr",
+ "qe-light",
"simplify",
"smt"
};

Z3: use qe-light and 2 rounds of elim unconstrained vars