mirror of
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120 lines
4.9 KiB
Python
120 lines
4.9 KiB
Python
#
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# SymbiYosys (sby) -- Front-end for Yosys-based formal verification flows
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#
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# Copyright (C) 2016 Clifford Wolf <clifford@clifford.at>
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#
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# Permission to use, copy, modify, and/or distribute this software for any
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# purpose with or without fee is hereby granted, provided that the above
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# copyright notice and this permission notice appear in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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import re, os, getopt
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from sby_core import SbyTask
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def run(mode, job, engine_idx, engine):
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abc_opts, abc_command = getopt.getopt(engine[1:], "", [])
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if len(abc_command) == 0:
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job.error("Missing ABC command.")
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for o, a in abc_opts:
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job.error("Unexpected ABC engine options.")
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if abc_command[0] == "bmc3":
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if mode != "bmc":
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job.error("ABC command 'bmc3' is only valid in bmc mode.")
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abc_command[0] += " -F {} -v".format(job.opt_depth)
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elif abc_command[0] == "sim3":
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if mode != "bmc":
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job.error("ABC command 'sim3' is only valid in bmc mode.")
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abc_command[0] += " -F {} -v".format(job.opt_depth)
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elif abc_command[0] == "pdr":
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if mode != "prove":
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job.error("ABC command 'pdr' is only valid in prove mode.")
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else:
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job.error("Invalid ABC command {}.".format(abc_command[0]))
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task = SbyTask(job, "engine_{}".format(engine_idx), job.model("aig"),
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("cd {}; {} -c 'read_aiger model/design_aiger.aig; fold; strash; {}; write_cex -a engine_{}/trace.aiw'").format
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(job.workdir, job.exe_paths["abc"], " ".join(abc_command), engine_idx),
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logfile=open("{}/engine_{}/logfile.txt".format(job.workdir, engine_idx), "w"))
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task.noprintregex = re.compile(r"^\.+$")
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task_status = None
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def output_callback(line):
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nonlocal task_status
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match = re.match(r"^Output [0-9]+ of miter .* was asserted in frame [0-9]+.", line)
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if match: task_status = "FAIL"
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match = re.match(r"^Simulation of [0-9]+ frames for [0-9]+ rounds with [0-9]+ restarts did not assert POs.", line)
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if match: task_status = "UNKNOWN"
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match = re.match(r"^Stopping BMC because all 2\^[0-9]+ reachable states are visited.", line)
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if match: task_status = "PASS"
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match = re.match(r"^No output asserted in [0-9]+ frames.", line)
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if match: task_status = "PASS"
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match = re.match(r"^Property proved.", line)
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if match: task_status = "PASS"
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return line
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def exit_callback(retcode):
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assert retcode == 0
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assert task_status is not None
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job.update_status(task_status)
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job.log("engine_{}: Status returned by engine: {}".format(engine_idx, task_status))
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job.summary.append("engine_{} ({}) returned {}".format(engine_idx, " ".join(engine), task_status))
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job.terminate()
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if task_status == "FAIL" and job.opt_aigsmt != "none":
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task2 = SbyTask(job, "engine_{}".format(engine_idx), job.model("smt2"),
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("cd {}; {} -s {}{} --noprogress --append {} --dump-vcd engine_{i}/trace.vcd --dump-vlogtb engine_{i}/trace_tb.v " +
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"--dump-smtc engine_{i}/trace.smtc --aig model/design_aiger.aim:engine_{i}/trace.aiw --aig-noheader model/design_smt2.smt2").format
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(job.workdir, job.exe_paths["smtbmc"], job.opt_aigsmt,
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"" if job.opt_tbtop is None else " --vlogtb-top {}".format(job.opt_tbtop),
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job.opt_append, i=engine_idx),
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logfile=open("{}/engine_{}/logfile2.txt".format(job.workdir, engine_idx), "w"))
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task2_status = None
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def output_callback2(line):
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nonlocal task2_status
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match = re.match(r"^## [0-9: ]+ Status: FAILED", line)
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if match: task2_status = "FAIL"
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match = re.match(r"^## [0-9: ]+ Status: PASSED", line)
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if match: task2_status = "PASS"
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return line
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def exit_callback2(line):
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assert task2_status is not None
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assert task2_status == "FAIL"
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if os.path.exists("{}/engine_{}/trace.vcd".format(job.workdir, engine_idx)):
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job.summary.append("counterexample trace: {}/engine_{}/trace.vcd".format(job.workdir, engine_idx))
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task2.output_callback = output_callback2
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task2.exit_callback = exit_callback2
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task.output_callback = output_callback
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task.exit_callback = exit_callback
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