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path: root/backends/smt2/smtio.py
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* Do not change solver output parsing for non-exists-forall problems.Alberto Gonzalez2020-03-261-2/+6
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* Skip reading stdout from the solver that if it isn't a line reading only ↵Alberto Gonzalez2020-03-261-1/+3
| | | | "sat", "unsat", or "unknown".
* Revert part of 0fda8308 from #1746 that broke other smtbmc flowsClaire Wolf2020-03-241-3/+1
| | | | Signed-off-by: Claire Wolf <claire@symbioticeda.com>
* Add support for optimizing exists-forall problems.Alberto Gonzalez2020-03-131-1/+11
| | | | | | Modifies smt2 backend to recognize `$anyconst` etc. assigned to a wire with the `maximize` or `minimize` attribute and emit `; yosys-smt2-maximize` or `; yosys-smt2-minimize` directives as appropriate. Modifies `backends/smt2/smtbmc.py` and `smtio.py` to recognize those directives and emit a `(maximize ...)` or `(minimize ...)` command at the end of `smt_forall_assert()`, as described in the paper "νZ - An Optimizing SMT Solver" by Nikolaj Bjørner et al. Adds an example `examples/smtbmc/demo9.v` to show how it can be used.
* Improve yosys-smtbmc "solver not found" handlingClaire Wolf2020-01-271-1/+5
| | | | Signed-off-by: Claire Wolf <clifford@clifford.at>
* Bugfix in smtio vcd handling of $-identifiersClifford Wolf2019-10-231-6/+9
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* smt: handle failure of setrlimit syscallN. Engelhardt2019-07-151-1/+5
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* Escape scope names starting with dollar sign in smtio.pyClifford Wolf2019-06-261-1/+4
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add timescale and generated-by header to yosys-smtbmc MkVcdClifford Wolf2019-06-161-0/+2
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add missing blackslash-to-slash convertion to smtio.py (matching ↵Clifford Wolf2019-02-061-1/+1
| | | | | | Smt2Worker::get_id() behavior) Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Merge pull request #693 from YosysHQ/rlimitClifford Wolf2018-11-071-8/+11
|\ | | | | improve rlimit handling in smtio.py
| * Limit stack size to 16 MB on DarwinClifford Wolf2018-11-071-1/+4
| | | | | | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
| * Fix for improved smtio.py rlimit codeClifford Wolf2018-11-061-1/+1
| | | | | | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
| * Improve stack rlimit code in smtio.pyClifford Wolf2018-11-061-8/+8
| | | | | | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* | Run solver in non-incremental mode whem smtio.py is configured for ↵Clifford Wolf2018-11-061-3/+12
|/ | | | | | non-incremental solving Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Use conservative stack size for SMT2 on MacOSArjen Roodselaar2018-11-041-1/+6
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* Gate POSIX-only signals and resource module to only run on POSIX Python ↵William D. Jones2018-07-061-9/+12
| | | | implementations.
* Add smtio.py support for parsing SMT2 (_ bvX n) syntax for BitVec constantsClifford Wolf2018-04-041-0/+3
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add smtio status msgs when --progress is inactiveClifford Wolf2018-03-291-2/+23
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Bugfix in smtio.py VCD file generatorClifford Wolf2018-03-291-1/+1
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Improve yosys-smtbmc log output and error handlingClifford Wolf2018-03-171-5/+14
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Improve handling of invalid check-sat result in smtio.pyClifford Wolf2018-03-171-1/+2
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Remove debug prints from yosys-smtbmc VCD writerClifford Wolf2018-03-081-2/+0
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Check results of (check-sat) in yosys-smtbmcClifford Wolf2018-03-071-0/+2
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Imporove yosys-smtbmc error handling, Improve VCD outputClifford Wolf2018-03-051-20/+43
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Fix a hangup in yosys-smtbmc error handlingClifford Wolf2018-03-041-3/+5
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Improved error handling in yosys-smtbmcClifford Wolf2018-03-031-1/+3
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Terminate running SMT solver when smtbmc is terminatedClifford Wolf2018-03-031-1/+31
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Mangle names with square brackets in VCD files to work around issues in gtkwaveClifford Wolf2018-03-011-2/+8
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add smtbmc support for exist-forall problemsClifford Wolf2018-02-231-4/+53
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Add support for mockup clock signals in yosys-smtbmc vcd outputClifford Wolf2018-02-201-2/+49
| | | | Signed-off-by: Clifford Wolf <clifford@clifford.at>
* Fix smtio.py for large SMT2 S-expressionsClifford Wolf2018-01-291-1/+12
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* Move user-provided smt2 info stmts to the top of the yosys-smtbmc smt2 outputClifford Wolf2018-01-181-3/+3
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* Add yosys-smtbmc VCD writer support for memories with async writesClifford Wolf2017-12-141-1/+1
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* Improve smtio performance by using reader thread, not writer threadClifford Wolf2017-10-261-10/+30
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* Use separate writer thread for talking to SMT solver to avoid read/write ↵Clifford Wolf2017-10-251-8/+23
| | | | deadlock
* Improve p_* functions in smtio.pyClifford Wolf2017-10-251-21/+19
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* Capsulate smt-solver read/write in separate functionsClifford Wolf2017-10-251-8/+24
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* Fix generation of vlogtb output in yosys-smtbmc for "rand reg" and "rand ↵Clifford Wolf2017-06-071-1/+30
| | | | const reg"
* Change default smt2 solver to yices (Yices 2 has switched its license to GPL)Clifford Wolf2017-05-271-4/+4
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* Fix boolector support in yosys-smtbmcClifford Wolf2017-05-081-18/+18
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* Add "write_smt2 -stdt" modeClifford Wolf2017-03-201-28/+37
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* Improve smt2 encodings of assert/assume/cover, better wire_smt2 help msgClifford Wolf2017-03-041-2/+2
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* Fix bug in smtio unroll codeClifford Wolf2017-02-261-3/+2
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* Improve (and fix for stbv mode) SMT2 memory APIClifford Wolf2017-02-261-3/+3
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* Add "write_smt2 -stbv"Clifford Wolf2017-02-241-1/+1
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* Add "yosys-smtbmc -S <opt>"Clifford Wolf2017-02-191-7/+18
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* Partially implement cover() support in yosys-smtbmcClifford Wolf2017-02-041-0/+4
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* Add "yosys-smtbmc --aig-noheader" and AIGER mem init supportClifford Wolf2017-01-281-2/+22
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* Implicitly set "yosys-smtbmc --noprogress" on windowsClifford Wolf2017-01-041-3/+4
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