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smtbmc: Avoid unnecessary deep copies during unrolling

This commit is contained in:
Jannis Harder 2022-03-28 12:37:11 +02:00
parent 62b89bb0d4
commit d25daa6203
1 changed files with 6 additions and 6 deletions
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12
backends/smt2/smtio.py
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@ -20,7 +20,7 @@ import sys, re, os, signal
import subprocess
if os.name == "posix":
import resource
from copy import deepcopy
from copy import copy
from select import select
from time import time
from queue import Queue, Empty
@ -301,7 +301,7 @@ class SmtIo:
key = tuple(stmt)
if key not in self.unroll_cache:
decl = deepcopy(self.unroll_decls[key[0]])
decl = copy(self.unroll_decls[key[0]])
self.unroll_cache[key] = "|UNROLL#%d|" % self.unroll_idcnt
decl[1] = self.unroll_cache[key]
@ -442,10 +442,10 @@ class SmtIo:
if stmt == "(push 1)":
self.unroll_stack.append((
deepcopy(self.unroll_sorts),
deepcopy(self.unroll_objs),
deepcopy(self.unroll_decls),
deepcopy(self.unroll_cache),
copy(self.unroll_sorts),
copy(self.unroll_objs),
copy(self.unroll_decls),
copy(self.unroll_cache),
))
if stmt == "(pop 1)":