CoverageIteratorBreadthFirst.java - fixed: cascaded backtracking. MinRoutesIterator.maxPaths(..) - replaced temporary workaround calculation with clean accessibility check from rationals and check for each (init,terminal)-pair. renamed operators [minroute(s)] to [route(s)]. MinRouteIterator.java - fixed: BUG alternative routes must not get larger than 1st alternative. operators trip and trip2 now reuse operator minroute. MinRoutesIterator.java - done: lternatives stop, when the sum over all (inital,terminal)-pairs' paths lengths gets larger than of first alternative. [ as of corporate 6517938ee797db6e3b551dc7252dc226bd3b1422 ]