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(relation number (i64))
(ruleset myrules1)
(rule ()
((number 1))
:ruleset myrules1)
(ruleset myrules2)
(rule ()
((number 2))
:ruleset myrules2)
(unstable-combined-ruleset rules1and2
myrules1 myrules2)
;; allowed to add to myrules2 and the change is reflected
(rule ()
((number 3))
:ruleset myrules2)
;; not allowed to add to combined ruleset
(fail
(rule ()
((number 4))
:ruleset myrules1and2))
(fail
(rule ()
((number 4))
:ruleset unboundruleset))
(ruleset myrules5)
(rule ()
((number 5))
:ruleset myrules5)
(unstable-combined-ruleset rules1and2and5
rules1and2 myrules5)
(run-schedule
rules1and2and5)
(check (number 1))
(check (number 2))
(check (number 3))
(check (number 5))
(fail (check (number 4)))