// Ensure the resolvents are standardized apart
Map<Variable, Term> renameSubstitituon = _standardizeApart
.standardizeApart(copyRPosLits, copyRNegLits,
_saIndexical);
Clause c = new Clause(copyRPosLits, copyRNegLits);
c.setProofStep(new ProofStepClauseBinaryResolvent(c,
pl, nl, this, othC, copyRBindings,
renameSubstitituon));
if (isImmutable()) {
c.setImmutable();
}