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authorClifford Wolf <clifford@clifford.at>2018-11-04 14:41:28 +0100
committerClifford Wolf <clifford@clifford.at>2018-11-04 14:41:28 +0100
commitd0acea4f2e6c98f09246584c2ac0903acc254093 (patch)
treee368e16cd65a8d73897d00975933eee754949b76 /backends/smt2
parent64e0582c292ca1f3a64c01d9a1faa96ef2f74588 (diff)
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Add proper error message for when smtbmc "append" fails
Signed-off-by: Clifford Wolf <clifford@clifford.at>
Diffstat (limited to 'backends/smt2')
-rw-r--r--backends/smt2/smtbmc.py12
1 files changed, 10 insertions, 2 deletions
diff --git a/backends/smt2/smtbmc.py b/backends/smt2/smtbmc.py
index 6af2a5ac1..b944ee004 100644
--- a/backends/smt2/smtbmc.py
+++ b/backends/smt2/smtbmc.py
@@ -1259,7 +1259,11 @@ elif covermode:
smt_assert_antecedent("(|%s_t| s%d s%d)" % (topmod, i-1, i))
smt_assert_consequent(get_constr_expr(constr_assumes, i))
print_msg("Re-solving with appended steps..")
- assert smt_check_sat() == "sat"
+ if smt_check_sat() == "unsat":
+ print("%s Cannot appended steps without violating assumptions!" % smt.timestamp())
+ found_failed_assert = True
+ retstatus = False
+ break
reached_covers = smt.bv2bin(smt.get("(covers_%d s%d)" % (coveridx, step)))
assert len(reached_covers) == len(cover_desc)
@@ -1377,7 +1381,11 @@ else: # not tempind, covermode
smt_assert_antecedent("(|%s_h| s%d)" % (topmod, i))
smt_assert_antecedent("(|%s_t| s%d s%d)" % (topmod, i-1, i))
smt_assert_consequent(get_constr_expr(constr_assumes, i))
- assert smt_check_sat() == "sat"
+ print_msg("Re-solving with appended steps..")
+ if smt_check_sat() == "unsat":
+ print("%s Cannot appended steps without violating assumptions!" % smt.timestamp())
+ retstatus = False
+ break
print_anyconsts(step)
for i in range(step, last_check_step+1):
print_failed_asserts(i)