Vincent Imbimbo 482b370540 cex: fix stack overflow ...

* src/parse-simulation.c: Replace reference counting with
parse_state_retain everywhere.
(free_parse_state): Make this function iterative instead of
recursive. Long parse_state chains were causing stack exhaustion.

* tests/counterexample.at: Fix expectations.

2020-05-22 07:52:27 +02:00

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