kdrag.notation.QForAll

kdrag.notation.QForAll(vs: list[ExprRef], *hyp_conc) → BoolRef

Quantified ForAll

Shorthand for ForAll(vars, Implies(And(hyp[0], hyp[1], …), conc))

If variables have a property wf attached, this is added as a hypothesis.

There is no downside to always using this compared to smt.ForAll and it can avoid some errors.

>>> x,y = smt.Ints("x y")
>>> QForAll([x,y], x > 0, y > 0, x + y > 0)
ForAll([x, y], Implies(And(x > 0, y > 0), x + y > 0))