1 files changed, 39 insertions, 0 deletions
diff --git a/test/regress/regress0/nl/sqrt.smt2 b/test/regress/regress0/nl/sqrt.smt2
new file mode 100644
index 000000000..fdcec3d62
--- /dev/null
+++ b/test/regress/regress0/nl/sqrt.smt2
@@ -0,0 +1,39 @@
+; EXPECT: sat
+; EXPECT: sat
+; EXPECT: unsat
+; EXPECT: sat
+; EXPECT: unsat
+(set-option :incremental true)
+(set-logic ALL)
+(declare-fun x () Real)
+(declare-fun y () Real)
+(declare-fun z () Real)
+
+(push)
+(assert (= (sqrt 1.0) 1.0))
+(check-sat)
+(pop)
+
+(push)
+(assert (= (sqrt 1.0) (- 1.0)))
+(check-sat)
+(pop)
+
+(push)
+(assert (= x 1.0))
+(assert (not (= (sqrt 1.0) (sqrt x))))
+(check-sat)
+(pop)
+
+(push)
+(assert (< x 0))
+(assert (= (sqrt 1.0) (sqrt x)))
+(check-sat)
+(pop)
+
+(push)
+(assert (= (sqrt y) z))
+(assert (= (sqrt x) (sqrt y)))
+(assert (not (= (sqrt x) z)))
+(check-sat)
+(pop)