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105 lines
3.9 KiB
Python
105 lines
3.9 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 Claire Xenia Wolf <claire@yosyshq.com>
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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, getopt
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from sby_core import SbyProc
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from sby_engine_aiger import aigsmt_exit_callback
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def run(mode, task, 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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task.error("Missing ABC command.")
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for o, a in abc_opts:
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task.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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task.error("ABC command 'bmc3' is only valid in bmc mode.")
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abc_command[0] += f" -F {task.opt_depth} -v"
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elif abc_command[0] == "sim3":
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if mode != "bmc":
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task.error("ABC command 'sim3' is only valid in bmc mode.")
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abc_command[0] += f" -F {task.opt_depth} -v"
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elif abc_command[0] == "pdr":
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if mode != "prove":
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task.error("ABC command 'pdr' is only valid in prove mode.")
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abc_command[0] += f" -v -I engine_{engine_idx}/invariants.pla"
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else:
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task.error(f"Invalid ABC command {abc_command[0]}.")
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smtbmc_vcd = task.opt_vcd and not task.opt_vcd_sim
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run_aigsmt = smtbmc_vcd or (task.opt_append and task.opt_append_assume)
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smtbmc_append = 0
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sim_append = 0
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log = task.log_prefix(f"engine_{engine_idx}")
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if task.opt_append_assume:
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smtbmc_append = task.opt_append
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elif smtbmc_vcd:
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if not task.opt_append_assume:
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log("For VCDs generated by smtbmc the option 'append_assume off' is ignored")
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smtbmc_append = task.opt_append
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else:
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sim_append = task.opt_append
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proc = SbyProc(
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task,
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f"engine_{engine_idx}",
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task.model("aig"),
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f"""cd {task.workdir}; {task.exe_paths["abc"]} -c 'read_aiger model/design_aiger.aig; fold{
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" -s" if task.opt_aigfolds or (abc_command[0].startswith("pdr ") and "-d" in abc_command[1:]) else ""
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}; strash; {" ".join(abc_command)}; write_cex -a engine_{engine_idx}/trace.aiw'""",
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logfile=open(f"{task.workdir}/engine_{engine_idx}/logfile.txt", "w")
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)
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proc.checkretcode = True
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proc.noprintregex = re.compile(r"^\.+$")
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proc_status = None
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def output_callback(line):
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nonlocal proc_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: proc_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: proc_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: proc_status = "PASS"
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match = re.match(r"^No output asserted in [0-9]+ frames.", line)
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if match: proc_status = "PASS"
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match = re.match(r"^Property proved.", line)
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if match: proc_status = "PASS"
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return line
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def exit_callback(retcode):
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aigsmt_exit_callback(task, engine_idx, proc_status,
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run_aigsmt=run_aigsmt, smtbmc_vcd=smtbmc_vcd, smtbmc_append=smtbmc_append, sim_append=sim_append, )
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proc.output_callback = output_callback
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proc.register_exit_callback(exit_callback)
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