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-rw-r--r--backends/smt2/smtio.py38
1 files changed, 30 insertions, 8 deletions
diff --git a/backends/smt2/smtio.py b/backends/smt2/smtio.py
index 3fc823e3..ae7968a1 100644
--- a/backends/smt2/smtio.py
+++ b/backends/smt2/smtio.py
@@ -31,11 +31,19 @@ from threading import Thread
# does not run out of stack frames when parsing large expressions
if os.name == "posix":
smtio_reclimit = 64 * 1024
- smtio_stacksize = 128 * 1024 * 1024
if sys.getrecursionlimit() < smtio_reclimit:
sys.setrecursionlimit(smtio_reclimit)
- if resource.getrlimit(resource.RLIMIT_STACK)[0] < smtio_stacksize:
- resource.setrlimit(resource.RLIMIT_STACK, (smtio_stacksize, -1))
+
+ current_rlimit_stack = resource.getrlimit(resource.RLIMIT_STACK)
+ if current_rlimit_stack[0] != resource.RLIM_INFINITY:
+ smtio_stacksize = 128 * 1024 * 1024
+ if os.uname().sysname == "Darwin":
+ # MacOS has rather conservative stack limits
+ smtio_stacksize = 16 * 1024 * 1024
+ if current_rlimit_stack[1] != resource.RLIM_INFINITY:
+ smtio_stacksize = min(smtio_stacksize, current_rlimit_stack[1])
+ if current_rlimit_stack[0] < smtio_stacksize:
+ resource.setrlimit(resource.RLIMIT_STACK, (smtio_stacksize, current_rlimit_stack[1]))
# currently running solvers (so we can kill them)
@@ -158,19 +166,28 @@ class SmtIo:
self.unroll = False
if self.solver == "yices":
- self.popen_vargs = ['yices-smt2', '--incremental'] + self.solver_opts
+ if self.noincr:
+ self.popen_vargs = ['yices-smt2'] + self.solver_opts
+ else:
+ self.popen_vargs = ['yices-smt2', '--incremental'] + self.solver_opts
if self.solver == "z3":
self.popen_vargs = ['z3', '-smt2', '-in'] + self.solver_opts
if self.solver == "cvc4":
- self.popen_vargs = ['cvc4', '--incremental', '--lang', 'smt2.6' if self.logic_dt else 'smt2'] + self.solver_opts
+ if self.noincr:
+ self.popen_vargs = ['cvc4', '--lang', 'smt2.6' if self.logic_dt else 'smt2'] + self.solver_opts
+ else:
+ self.popen_vargs = ['cvc4', '--incremental', '--lang', 'smt2.6' if self.logic_dt else 'smt2'] + self.solver_opts
if self.solver == "mathsat":
self.popen_vargs = ['mathsat'] + self.solver_opts
if self.solver == "boolector":
- self.popen_vargs = ['boolector', '--smt2', '-i'] + self.solver_opts
+ if self.noincr:
+ self.popen_vargs = ['boolector', '--smt2'] + self.solver_opts
+ else:
+ self.popen_vargs = ['boolector', '--smt2', '-i'] + self.solver_opts
self.unroll = True
if self.solver == "abc":
@@ -767,7 +784,7 @@ class SmtIo:
def get_path(self, mod, path):
assert mod in self.modinfo
- path = path.split(".")
+ path = path.replace("\\", "/").split(".")
for i in range(len(path)-1):
first = ".".join(path[0:i+1])
@@ -1006,6 +1023,8 @@ class MkVcd:
assert t >= self.t
if t != self.t:
if self.t == -1:
+ print("$version Generated by Yosys-SMTBMC $end", file=self.f)
+ print("$timescale 1ns $end", file=self.f)
print("$var integer 32 t smt_step $end", file=self.f)
print("$var event 1 ! smt_clock $end", file=self.f)
@@ -1024,7 +1043,10 @@ class MkVcd:
scope = scope[:-1]
while uipath[:-1] != scope:
- print("$scope module %s $end" % uipath[len(scope)], file=self.f)
+ scopename = uipath[len(scope)]
+ if scopename.startswith("$"):
+ scopename = "\\" + scopename
+ print("$scope module %s $end" % scopename, file=self.f)
scope.append(uipath[len(scope)])
if path in self.clocks and self.clocks[path][1] == "event":