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picorv32
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Added z3 support to mem_equiv.py

This commit is contained in:
Clifford Wolf 2015-08-14 23:57:09 +02:00
parent 16f97a86a1
commit 0ab0b6eca4
1 changed files with 20 additions and 10 deletions
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26
scripts/smt2-bmc/mem_equiv.py
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@ -4,8 +4,9 @@ import os, sys, getopt
from time import time from time import time
import subprocess import subprocess
steps = 12 steps = 15
words = 0 words = 0
solver = "yices"
allmem = False allmem = False
fastmem = False fastmem = False
initzero = False initzero = False
@ -16,9 +17,17 @@ debug_file = open("debug.smt2", "w")
# Yices Bindings # Yices Bindings
##################################### #####################################
if solver == "yices":
yices = subprocess.Popen(['yices-smt2', '--incremental'], stdin=subprocess.PIPE, yices = subprocess.Popen(['yices-smt2', '--incremental'], stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT) stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
elif solver == "z3":
yices = subprocess.Popen(['z3', '-smt2', '-in'], stdin=subprocess.PIPE,
stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
else:
assert False
def yices_write(stmt): def yices_write(stmt):
stmt = stmt.strip() stmt = stmt.strip()
if debug_print: if debug_print:
@ -128,6 +137,11 @@ def yices_get_net_bin(mod_name, net_name, state_name):
##################################### #####################################
start_time = time() start_time = time()
def timestamp():
secs = int(time() - start_time)
return "+ %6d [%3d:%02d:%02d] " % (secs, secs // (60*60), (secs // 60) % 60, secs % 60)
yices_write("(set-logic QF_AUFBV)") yices_write("(set-logic QF_AUFBV)")
regs_a = list() regs_a = list()
@ -183,8 +197,7 @@ for step in range(steps):
yices_write("(assert (main_a_t a%d a%d))" % (step-1, step)) yices_write("(assert (main_a_t a%d a%d))" % (step-1, step))
yices_write("(assert (main_b_t b%d b%d))" % (step-1, step)) yices_write("(assert (main_b_t b%d b%d))" % (step-1, step))
secs = int(time() - start_time) print("%s Checking sequence of length %d.." % (timestamp(), step))
print("[%3d:%02d:%02d] Checking sequence of length %d.." % (secs // (60*60), (secs // 60) % 60, secs % 60, step))
yices_write("(push 1)") yices_write("(push 1)")
# stop with a trap and no pending memory xfer # stop with a trap and no pending memory xfer
@ -201,8 +214,7 @@ for step in range(steps):
if yices_read() == "sat": if yices_read() == "sat":
secs = int(time() - start_time) print("%s Creating model.." % timestamp())
print("[%3d:%02d:%02d] Creating model.." % (secs // (60*60), (secs // 60) % 60, secs % 60))
def make_cpu_regs(step): def make_cpu_regs(step):
for i in range(1, 32): for i in range(1, 32):
@ -411,9 +423,6 @@ for step in range(steps):
print(" end", file=f) print(" end", file=f)
print("endmodule", file=f) print("endmodule", file=f)
secs = int(time() - start_time)
print("[%3d:%02d:%02d] Done." % (secs // (60*60), (secs // 60) % 60, secs % 60))
if words > 0: if words > 0:
print("running verilog test bench...") print("running verilog test bench...")
os.system("iverilog -o mem_equiv_tb -s testbench mem_equiv_tb.v mem_equiv.v ../../picorv32.v && ./mem_equiv_tb") os.system("iverilog -o mem_equiv_tb -s testbench mem_equiv_tb.v mem_equiv.v ../../picorv32.v && ./mem_equiv_tb")
@ -423,6 +432,7 @@ for step in range(steps):
else: # unsat else: # unsat
yices_write("(pop 1)") yices_write("(pop 1)")
print("%s Done." % timestamp())
yices_write("(exit)") yices_write("(exit)")
yices.wait() yices.wait()