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yosys/frontends/verific
History
Jannis Harder 83dd99efb7 verific: New -sva-continue-on-error import option 
This option allows you to process a design that includes unsupported
SVA. Unsupported SVA gets imported as formal cells using 'x inputs and
with the `unsupported_sva` attribute set. This allows you to get a
complete list of defined properties or to check only a supported subset
of properties. To ensure no properties are unintentionally skipped for
actual verification, even in cases where `-sva-continue-on-error` is
used by default to read and inspect a design, `hierarchy -simcheck` and
`hierarchy -smtcheck` (run by SBY) now ensure that no `unsupported_sva`
property cells remain in the design.
2025-09-24 18:58:54 +02:00
..
example.sby Improve docs for verific bindings, add simply sby example 2017-07-22 11:58:51 +02:00
example.sv Improve docs for verific bindings, add simply sby example 2017-07-22 11:58:51 +02:00
Makefile.inc Update makefile to make options uniform 2024-06-17 13:29:11 +02:00
README Update README 2022-07-28 12:32:19 +02:00
verific.cc verific: New -sva-continue-on-error import option 2025-09-24 18:58:54 +02:00
verific.h verific: New -sva-continue-on-error import option 2025-09-24 18:58:54 +02:00
verificsva.cc verific: New -sva-continue-on-error import option 2025-09-24 18:58:54 +02:00

README 

This directory contains Verific bindings for Yosys.

Use Tabby CAD Suite from YosysHQ if you need Yosys+Verific.
https://www.yosyshq.com/

Contact YosysHQ at contact@yosyshq.com for free evaluation
binaries of Tabby CAD Suite.


Verific Features that should be enabled in your Verific library
===============================================================

database/DBCompileFlags.h:
	DB_PRESERVE_INITIAL_VALUE


Testing Verific+Yosys+SymbiYosys for formal verification
========================================================

Install Yosys+Verific, SymbiYosys, and Yices2. Install instructions:
http://symbiyosys.readthedocs.io/en/latest/quickstart.html#installing

Then run in the following command in this directory:

	sby -f example.sby

This will generate approximately one page of text output. The last lines
should be something like this:

	SBY [example] summary: Elapsed clock time [H:MM:SS (secs)]: 0:00:00 (0)
	SBY [example] summary: Elapsed process time [H:MM:SS (secs)]: 0:00:00 (0)
	SBY [example] summary: engine_0 (smtbmc yices) returned PASS for basecase
	SBY [example] summary: engine_0 (smtbmc yices) returned PASS for induction
	SBY [example] summary: successful proof by k-induction.
	SBY [example] DONE (PASS, rc=0)