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itp engine: add skip and fixpoint justification

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inquisitour 2026-05-15 05:19:58 +00:00
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docs/source/reference.rst
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@ -514,7 +514,9 @@ The ``itp`` engine has been verified to produce unbounded safety proofs
for the first ``skip`` timeframes, but fixpoint convergence is only
guaranteed when ``skip`` is set to 0. Designs requiring non-zero
``skip`` values (e.g. multi-cycle reset sequences) will return bounded
results only.
results only, as pure BMC cannot rule out paths through invalid reset
states without inductive reasoning. This is a property of BMC-based
interpolation, not a limitation specific to this engine.
The ``itp`` engine does not currently produce counterexample witness
traces. When a property violation is found, only FAIL status is reported.