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Minor yosys-smtbmc bugfix

This commit is contained in:
Clifford Wolf 2016-08-22 17:45:01 +02:00
parent 583ceee6eb
commit 6523023645
1 changed files with 6 additions and 0 deletions
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6
backends/smt2/smtbmc.py
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@ -171,6 +171,12 @@ def get_constr_expr(db, state):
expr = re.sub(r'\[([^\]]+)\]', lambda match: smt.net_expr(topmod, "s%d" % state, smt.get_path(topmod, match.group(1))), expr)
expr_list.append(expr)
if len(expr_list) == 0:
return "true"
if len(expr_list) == 1:
return expr_list[0]
return "(and %s)" % " ".join(expr_list)