A tactic to intantiate quantifiers in a term using a given list of
quantifier heuristic parameters.
DESCRIPTION
This tactic is based on quantHeuristicsLib.QUANT_INSTANTIATE_CONV.
It tries to instantiate quantifiers. Free variables of the goal are
seen as universally quantified by this tactic. Therefore, it tries to
instantiate these free variables.
In contrast to quantHeuristicsLib.ASM_QUANT_INSTANTIATE_TAC this tactic
does not take the assumptions of the goal into account.