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authorAndrew Reynolds <andrew.j.reynolds@gmail.com>2020-04-22 13:32:20 -0500
committerGitHub <noreply@github.com>2020-04-22 11:32:20 -0700
commitd64143f8aec229a673db1ec7b38d94890134d3f5 (patch)
tree3a967e221e2e881952b885b7fccfd08f21f1b034 /test/regress/regress1/strings/issue4379.smt2
parent286ed8f8a3d6aece0469e983e87626a25107608d (diff)
Ensure disequality splits are processed as lemmas (#4380)
Fixes #4379. This was caused by a splitting lemma rewriting to a conjunction, being processed as a fact, and having a pending phase requirement sent out assuming the inference was to be processed as a lemma. This forces 2 of the splits in the core solver to be always processed as lemmas.
Diffstat (limited to 'test/regress/regress1/strings/issue4379.smt2')
-rw-r--r--test/regress/regress1/strings/issue4379.smt29
1 files changed, 9 insertions, 0 deletions
diff --git a/test/regress/regress1/strings/issue4379.smt2 b/test/regress/regress1/strings/issue4379.smt2
new file mode 100644
index 000000000..c5d024bc2
--- /dev/null
+++ b/test/regress/regress1/strings/issue4379.smt2
@@ -0,0 +1,9 @@
+; COMMAND-LINE: --strings-exp
+; EXPECT: sat
+(set-logic QF_SLIA)
+(set-info :status sat)
+(declare-const i7 Int)
+(declare-const Str8 String)
+(declare-const Str17 String)
+(assert (distinct (str.++ "" "rvhhcn" "" Str8 (int.to.str 56)) (str.++ "" (int.to.str i7) "" Str17) Str17))
+(check-sat)
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