Given a quantifier free formula f and polarity pol, returns all pairs of terms which occur in the same equality predicate and its polarity.
Given a quantifier free formula f and polarity pol, returns all pairs of terms which occur in the same equality predicate and its polarity. pol is true for positive polarity.
Given an expansion sequent S which is a quasi-tautology (modulo symmetry), returns an expansion sequent S' which is S extended by the symmetry instances needed to make it a tautology.