1. A method for conditional sequential equivalence checking of logic designs embodied in netlists using a data processing system, comprising: creating, using the data processing system, an equivalence-checking netlist over a first netlist and a second netlist, wherein the first netlist is associated with a first logic design and the second netlist is associated with a second logic design, and wherein the conditional sequential equivalence checking includes conditions under which equivalences of the first and second netlists are checked; deriving, using the data processing system, a set of candidate conditional equivalence invariants for each correlated gate in a correlated gate pair set; attempting to prove, using the data processing system, that each candidate conditional equivalence invariant in the set of candidate conditional equivalence invariants is accurate; removing, using the data processing system, candidate conditional equivalence invariants that cannot be proven accurate from the set of candidate conditional equivalence invariants; recording, using the data processing system, the candidate conditional equivalence invariants that have been proven accurate as a set of conditional equivalence invariants; and completing, using the data processing system, the conditional sequential equivalence checking of the equivalence-checking netlist using the recorded set of conditional equivalence invariants.