mirror of https://github.com/YosysHQ/yosys.git
Some changes to yosys-smtbmc cmd line options, add --final-only
This commit is contained in:
Clifford Wolf
parent
23afeadb5e
commit
f56dba8e20
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@ -32,6 +32,7 @@ outconstr = None
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gentrace = False
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tempind = False
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assume_skipped = None
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final_only = False
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topmod = None
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so = smtopts()
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@ -40,14 +41,10 @@ def usage():
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print("""
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yosys-smtbmc [options] <yosys_smt2_output>
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-t <num_steps>, -t <skip_steps>:<num_steps>
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default: skip_steps=0, num_steps=20
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-u <start_step>
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assume asserts in skipped steps in BMC
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-S <step_size>
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prove <step_size> time steps at once
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-t <num_steps>
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-t <skip_steps>:<num_steps>
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-t <skip_steps>:<step_size>:<num_steps>
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default: skip_steps=0, step_size=1, num_steps=20
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-g
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generate an arbitrary trace that satisfies
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@ -62,6 +59,14 @@ yosys-smtbmc [options] <yosys_smt2_output>
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--smtc <constr_filename>
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read constraints file
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--final-only
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only check final constraints, assume base case
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--assume-skipped <start_step>
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assume asserts in skipped steps in BMC.
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no assumptions are created for skipped steps
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before <start_step>.
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--dump-vcd <vcd_filename>
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write trace to this VCD file
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(hint: use 'write_smt2 -wires' for maximum
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@ -77,22 +82,29 @@ yosys-smtbmc [options] <yosys_smt2_output>
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try:
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opts, args = getopt.getopt(sys.argv[1:], so.shortopts + "t:u:S:igm:", so.longopts + ["smtc=", "dump-vcd=", "dump-vlogtb=", "dump-smtc="])
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opts, args = getopt.getopt(sys.argv[1:], so.shortopts + "t:igm:", so.longopts +
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["final-only", "assume-skipped=", "smtc=", "dump-vcd=", "dump-vlogtb=", "dump-smtc="])
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except:
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usage()
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for o, a in opts:
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if o == "-t":
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match = re.match(r"(\d+):(.*)", a)
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if match:
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skip_steps = int(match.group(1))
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num_steps = int(match.group(2))
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a = a.split(":")
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if len(a) == 1:
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num_steps = int(a[1])
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elif len(a) == 2:
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skip_steps = int(a[0])
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num_steps = int(a[1])
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elif len(a) == 3:
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skip_steps = int(a[0])
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step_size = int(a[1])
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num_steps = int(a[2])
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else:
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num_steps = int(a)
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elif o == "-u":
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assert 0
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elif o == "--assume-skipped":
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assume_skipped = int(a)
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elif o == "-S":
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step_size = int(a)
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elif o == "--final-only":
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final_only = True
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elif o == "--smtc":
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inconstr.append(a)
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elif o == "--dump-vcd":
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@ -532,23 +544,28 @@ else: # not tempind
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last_check_step = step+i
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if not gentrace:
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if last_check_step == step:
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print("%s Checking asserts in step %d.." % (smt.timestamp(), step))
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else:
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print("%s Checking asserts in steps %d to %d.." % (smt.timestamp(), step, last_check_step))
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smt.write("(push 1)")
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if not final_only:
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if last_check_step == step:
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print("%s Checking asserts in step %d.." % (smt.timestamp(), step))
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else:
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print("%s Checking asserts in steps %d to %d.." % (smt.timestamp(), step, last_check_step))
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smt.write("(push 1)")
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smt.write("(assert (not (and %s)))" % " ".join(["(%s_a s%d)" % (topmod, i) for i in range(step, last_check_step+1)] +
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[get_constr_expr(constr_asserts, i) for i in range(step, last_check_step+1)]))
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smt.write("(assert (not (and %s)))" % " ".join(["(%s_a s%d)" % (topmod, i) for i in range(step, last_check_step+1)] +
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[get_constr_expr(constr_asserts, i) for i in range(step, last_check_step+1)]))
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if smt.check_sat() == "sat":
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print("%s BMC failed!" % smt.timestamp())
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print_failed_asserts(topmod, "s%d" % step, topmod)
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write_trace(step+step_size)
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retstatus = False
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break
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if smt.check_sat() == "sat":
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print("%s BMC failed!" % smt.timestamp())
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print_failed_asserts(topmod, "s%d" % step, topmod)
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write_trace(step+step_size)
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retstatus = False
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break
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smt.write("(pop 1)")
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smt.write("(pop 1)")
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for i in range(step, last_check_step+1):
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smt.write("(assert (%s_a s%d))" % (topmod, i))
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smt.write("(assert %s)" % get_constr_expr(constr_asserts, i))
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if constr_final_start is not None:
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for i in range(step, last_check_step+1):
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@ -572,12 +589,11 @@ else: # not tempind
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if not retstatus:
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break
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if constr_final_start is None:
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else: # gentrace
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for i in range(step, last_check_step+1):
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smt.write("(assert (%s_a s%d))" % (topmod, i))
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smt.write("(assert %s)" % get_constr_expr(constr_asserts, i))
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if gentrace:
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print("%s Solving for step %d.." % (smt.timestamp(), step))
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if smt.check_sat() != "sat":
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print("%s No solution found!" % smt.timestamp())
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