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Added boolector support to yosys-smtbmc

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This commit is contained in:
Clifford Wolf 2016-09-03 14:26:00 +02:00
parent d2eba7631f
commit fa5565b606
3 changed files with 58 additions and 33 deletions
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44
backends/smt2/smtbmc.py
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@ -514,17 +514,17 @@ if tempind:
retstatus = False
skip_counter = step_size
for step in range(num_steps, -1, -1):
smt.write("(declare-fun s%d () %s_s)" % (step, topmod))
smt.write("(assert (%s_u s%d))" % (topmod, step))
smt.write("(assert (%s_h s%d))" % (topmod, step))
smt.write("(assert (not (%s_is s%d)))" % (topmod, step))
smt.write("(declare-fun s%d () |%s_s|)" % (step, topmod))
smt.write("(assert (|%s_u| s%d))" % (topmod, step))
smt.write("(assert (|%s_h| s%d))" % (topmod, step))
smt.write("(assert (not (|%s_is| s%d)))" % (topmod, step))
if step == num_steps:
smt.write("(assert (not (%s_a s%d)))" % (topmod, step))
smt.write("(assert (not (|%s_a| s%d)))" % (topmod, step))
else:
smt.write("(assert (%s_t s%d s%d))" % (topmod, step, step+1))
smt.write("(assert (%s_a s%d))" % (topmod, step))
smt.write("(assert (|%s_t| s%d s%d))" % (topmod, step, step+1))
smt.write("(assert (|%s_a| s%d))" % (topmod, step))
if step > num_steps-skip_steps:
print("%s Skipping induction in step %d.." % (smt.timestamp(), step))
@ -560,23 +560,23 @@ else: # not tempind
step = 0
retstatus = True
while step < num_steps:
smt.write("(declare-fun s%d () %s_s)" % (step, topmod))
smt.write("(assert (%s_u s%d))" % (topmod, step))
smt.write("(assert (%s_h s%d))" % (topmod, step))
smt.write("(declare-fun s%d () |%s_s|)" % (step, topmod))
smt.write("(assert (|%s_u| s%d))" % (topmod, step))
smt.write("(assert (|%s_h| s%d))" % (topmod, step))
smt.write("(assert %s)" % get_constr_expr(constr_assumes, step))
if step == 0:
smt.write("(assert (%s_i s0))" % (topmod))
smt.write("(assert (%s_is s0))" % (topmod))
smt.write("(assert (|%s_i| s0))" % (topmod))
smt.write("(assert (|%s_is| s0))" % (topmod))
else:
smt.write("(assert (%s_t s%d s%d))" % (topmod, step-1, step))
smt.write("(assert (not (%s_is s%d)))" % (topmod, step))
smt.write("(assert (|%s_t| s%d s%d))" % (topmod, step-1, step))
smt.write("(assert (not (|%s_is| s%d)))" % (topmod, step))
if step < skip_steps:
if assume_skipped is not None and step >= assume_skipped:
print("%s Skipping step %d (and assuming pass).." % (smt.timestamp(), step))
smt.write("(assert (%s_a s%d))" % (topmod, step))
smt.write("(assert (|%s_a| s%d))" % (topmod, step))
smt.write("(assert %s)" % get_constr_expr(constr_asserts, step))
else:
print("%s Skipping step %d.." % (smt.timestamp(), step))
@ -586,10 +586,10 @@ else: # not tempind
last_check_step = step
for i in range(1, step_size):
if step+i < num_steps:
smt.write("(declare-fun s%d () %s_s)" % (step+i, topmod))
smt.write("(assert (%s_u s%d))" % (topmod, step+i))
smt.write("(assert (%s_h s%d))" % (topmod, step+i))
smt.write("(assert (%s_t s%d s%d))" % (topmod, step+i-1, step+i))
smt.write("(declare-fun s%d () |%s_s|)" % (step+i, topmod))
smt.write("(assert (|%s_u| s%d))" % (topmod, step+i))
smt.write("(assert (|%s_h| s%d))" % (topmod, step+i))
smt.write("(assert (|%s_t| s%d s%d))" % (topmod, step+i-1, step+i))
smt.write("(assert %s)" % get_constr_expr(constr_assumes, step+i))
last_check_step = step+i
@ -601,7 +601,7 @@ else: # not tempind
print("%s Checking asserts in steps %d to %d.." % (smt.timestamp(), step, last_check_step))
smt.write("(push 1)")
smt.write("(assert (not (and %s)))" % " ".join(["(%s_a s%d)" % (topmod, i) for i in range(step, last_check_step+1)] +
smt.write("(assert (not (and %s)))" % " ".join(["(|%s_a| s%d)" % (topmod, i) for i in range(step, last_check_step+1)] +
[get_constr_expr(constr_asserts, i) for i in range(step, last_check_step+1)]))
if smt.check_sat() == "sat":
@ -616,7 +616,7 @@ else: # not tempind
smt.write("(pop 1)")
for i in range(step, last_check_step+1):
smt.write("(assert (%s_a s%d))" % (topmod, i))
smt.write("(assert (|%s_a| s%d))" % (topmod, i))
smt.write("(assert %s)" % get_constr_expr(constr_asserts, i))
if constr_final_start is not None:
@ -644,7 +644,7 @@ else: # not tempind
else: # gentrace
for i in range(step, last_check_step+1):
smt.write("(assert (%s_a s%d))" % (topmod, i))
smt.write("(assert (|%s_a| s%d))" % (topmod, i))
smt.write("(assert %s)" % get_constr_expr(constr_asserts, i))
print("%s Solving for step %d.." % (smt.timestamp(), last_check_step))