simplify Expr Base
inline fun <T : KSort> KExprSimplifierBase.simplifyExprBase(expr: KExpr<T>, preprocess: KExprSimplifier.() -> KExpr<T>, simplify: KExprSimplifier.() -> KExpr<T>): KExpr<T>
Simplify an expression.
Preprocess. Rewrite an expression before simplification of an arguments (top-down).
Simplify. Rewrite an expression after arguments simplification (bottom-up).
Post rewrite. Perform a simplification of a simplification result.