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263 Commits

Author SHA1 Message Date
Jannis Harder 021c3c8da5 smt2: Support $anyinit cells 2022-08-16 13:37:30 +02:00
Jannis Harder a5e1d3b997 formalff: Set new replaced_by_gclk attribute on removed dff's clks 
This attribute can be used by formal backends to indicate which clocks
were mapped to the global clock. Update the btor and smt2 backend which
already handle clock inputs to understand this attribute.
 2022-08-16 13:37:30 +02:00
Miodrag Milanovic 4444d5cf68 Switched to utf-8 in smtio.py 2022-08-09 12:54:48 +02:00
Jannis Harder 6af5e74f95 smt2: Fix $shift/$shiftx with negative shift ammounts 
Fixes #3431, fixes #3344
 2022-08-02 20:16:41 +02:00
Jannis Harder 930bcf0e75 smt2, btor: Revert calling memory_map -rom-only 
This approach had major issues with ROMs whose initialization was not
fully defined. If required, memory_map -rom-only -keepdc should be
called early in a formal flow instead. (This does require a careful
choice of optimization passes though. Sby's scripts will be updated
accordingly.)
 2022-06-29 18:28:34 +02:00
Jannis Harder d78d807a7f memory_map: -keepdc option for formal 
Use it when invoking memory_map -rom-only from write_{smt2,btor}.
 2022-06-27 15:47:55 +02:00
Jannis Harder 4adef63cd4 smt2, btor: Use memory_map -rom-only to make ROMs usable for k-induction 
This avoids provability regressions now that we infer more ROMs.

This fixes #3378
 2022-06-17 17:23:13 +02:00
Jannis Harder 0c5f62f6ff smtbmc: noincr: keep solver running for post check-sat unrolling 2022-06-08 13:20:25 +02:00
Jannis Harder 6db2948938
Merge pull request #3357 from jix/smtbmc-cvc5 
smtbmc: recognize cvc5 and fix unrolling for cvc4/cvc5
 2022-06-08 12:52:51 +02:00
Jannis Harder ac22f1764d smt2: emit smtlib2_comb_expr outputs after all inputs 2022-06-07 19:06:45 +02:00
Jannis Harder 5f9a97d234
Merge pull request #3319 from programmerjake/smtlib2-expr-support 
add smtlib2_comb_expr
 2022-06-07 16:47:10 +02:00
Jannis Harder ab9e887dee smtbmc: Force nonincremental mode when yices is used with forall 2022-06-03 16:45:23 +02:00
Jannis Harder 0207d7b0cf smtbmc: recognize cvc5 and fix unrolling for cvc4/cvc5 2022-06-03 16:24:09 +02:00
Jacob Lifshay cd57c5adb3 smt2: Add smtlib2_comb_expr attribute to allow user-selected smtlib2 expressions 2022-06-02 22:37:29 -07:00
Jacob Lifshay d53479a0d6 add $divfloor support to write_smt2 
Fixes: #3330
 2022-05-24 01:34:25 -07:00
Jannis Harder c7ef0f2932 smt2: Make write port array stores conditional on nonzero write mask 2022-04-20 17:49:48 +02:00
Jannis Harder 8b15f3a548 smtbmc: fix bmc with no assertions 
this was broken by the `--keep-going` changes
 2022-03-29 20:41:50 +02:00
Jannis Harder 8cc8c5efde
Merge pull request #3253 from jix/smtbmc-nodeepcopy 
smtbmc: Avoid unnecessary deep copies during unrolling
 2022-03-28 16:59:26 +02:00
Jannis Harder 17e2a3048c
Merge pull request #3247 from jix/smtbmc-keepgoing 
smtbmc `--keep-going`
 2022-03-28 16:58:41 +02:00
Jannis Harder d25daa6203 smtbmc: Avoid unnecessary deep copies during unrolling 2022-03-28 13:03:48 +02:00
Jannis Harder 5e4d804e53 yosys-smtbmc: Option to keep going after failed assertions in BMC mode 2022-03-24 16:01:14 +01:00
Jannis Harder e43ebf8527 yosys-smtbmc: Fix typo in help text, remove trailing whitespace 2022-03-24 16:01:14 +01:00
N. Engelhardt a7ee01065a ignore # comment lines 2022-03-24 10:19:17 +01:00
Miodrag Milanović a95e5d505b
Merge pull request #3186 from nakengelhardt/smtbmc_sby_print_id 
add argument for printing cell names in yosys-smtbmc
 2022-03-04 16:39:12 +01:00
N. Engelhardt dc739362c7 print cell name for properties in yosys-smtbmc 2022-02-22 17:00:10 +01:00
Claire Xenia Wolf 30eb7f8665 Add a bit of flexibilty re trace length when processing aiger witnesses in smtbmc.py 
Signed-off-by: Claire Xenia Wolf <claire@clairexen.net>
 2022-02-11 17:24:49 +01:00
Marcelina Kościelnicka 93508d58da Add $bmux and $demux cells. 2022-01-28 23:34:41 +01:00
Marcelina Kościelnicka e7d89e653c Hook up $aldff support in various passes. 2021-10-02 21:01:21 +02:00
Marcelina Kościelnicka 33749f1e3a yosys-smtbmc: Fix reused loop variable. 
Fixes #2999.
 2021-09-10 13:34:58 +02:00
GCHQDeveloper560 4379375d89 Add support for the Bitwuzla solver 2021-07-12 22:07:58 +02:00
Claire Xenia Wolf 72787f52fc Fixing old e-mail addresses and deadnames 
s/((Claire|Xen|Xenia|Clifford)\s+)+(Wolf|Xen)\s+<(claire|clifford)@(symbioticeda.com|clifford.at|yosyshq.com)>/Claire Xenia Wolf <claire@yosyshq.com>/gi;
s/((Nina|Nak|N\.)\s+)+Engelhardt\s+<nak@(symbioticeda.com|yosyshq.com)>/N. Engelhardt <nak@yosyshq.com>/gi;
s/((David)\s+)+Shah\s+<(dave|david)@(symbioticeda.com|yosyshq.com|ds0.me)>/David Shah <dave@ds0.me>/gi;
s/((Miodrag)\s+)+Milanovic\s+<(miodrag|micko)@(symbioticeda.com|yosyshq.com)>/Miodrag Milanovic <micko@yosyshq.com>/gi;
s,https?://www.clifford.at/yosys/,http://yosyshq.net/yosys/,g;
 2021-06-08 00:39:36 +02:00
Marcelina Kościelnicka cbf6b719fe Make a few passes auto-call Mem::narrow instead of rejecting wide ports. 
This essentially adds wide port support for free in passes that don't
have a usefully better way of handling wide ports than just breaking
them up to narrow ports, avoiding "please run memory_narrow" annoyance.
 2021-05-28 00:40:56 +02:00
Marcelina Kościelnicka 69bf5c81c7 Reject wide ports in some passes that will never support them. 2021-05-25 02:07:25 +02:00
Marcelina Kościelnicka c4cc888b2c kernel/rtlil: Extract some helpers for checking memory cell types. 
There will soon be more (versioned) memory cells, so handle passes that
only care if a cell is memory-related by a simple helper call instead of
a hardcoded list.
 2021-05-22 21:43:00 +02:00
Marcelina Kościelnicka 979347999f btor, smt2, smv: Add a hint on how to deal with funny FF types. 2021-02-25 22:04:04 +01:00
Marcelina Kościelnicka f272c8b407 smt2: Use Mem helper. 2020-10-21 17:51:20 +02:00
Jakob Wenzel 54166ae0c5 smtbmc: escape identifiers in verilog testbench 2020-10-06 11:27:14 +02:00
N. Engelhardt 3238190797 use the new isPublic() in a few places 2020-09-14 12:43:18 +02:00
whitequark c1fff52477
write_smt2: fix SMT-LIB tutorial URL 2020-08-29 20:02:35 +00:00
Noah Moroze 91682d189e Ensure smt2 comments are associated with accessors 2020-08-20 16:00:05 -04:00
Alberto Gonzalez 42fb75c570
smtio: Emit `mode: start` options before `set-logic` command and any other options after it. 
Refer to the SMT-LIB specification, section 4.1.7.  According to the spec, some options can only be specified in `start` mode.  Once the solver sees `set-logic`, it moves to `assert` mode.
 2020-07-20 22:09:44 +00:00
Alberto Gonzalez 654864658f
smtio: Add support for parsing `yosys-smt2-solver-option` info statements. 2020-07-20 21:54:56 +00:00
Alberto Gonzalez f037985337
smt2: Add `-solver-option` option. 2020-07-20 21:54:56 +00:00
Claire Wolf a207cb362c Only allow "sat" and "unsat" smt solver responses in yosys-smtbmc 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-07-20 19:35:32 +02:00
whitequark 7191dd16f9 Use C++11 final/override keywords. 2020-06-18 23:34:52 +00:00
Yehowshua Immanuel da0778350b
more reasonable numbers for memory 2020-06-04 17:00:04 -04:00
Yehowshua Immanuel 5d29a9f633
MacOS has even stricter stack limits in catalina. 
Invoking sby in macOS Catalina fails because of bizarre stack limits in Catalina.
 2020-06-04 14:01:56 -04:00
clairexen ea46ed81f9
Merge pull request #2018 from boqwxp/qbfsat-timeout 
smtbmc and qbfsat: Add timeout option to set solver timeouts for Z3, Yices, and CVC4.
 2020-05-30 15:04:51 +02:00
Alberto Gonzalez ea30465107
smtbmc: Remove superfluous `yosys-smt2-timeout` file macro. 
Co-Authored-By: clairexen <claire@symbioticeda.com>
 2020-05-29 21:33:00 +00:00
clairexen 94c1035389
Merge pull request #1885 from Xiretza/mod-rem-cells 
Fix modulo/remainder semantics
 2020-05-29 16:37:23 +02:00