Merge branch 'fix_45' into 'master'

Add regression tests for issue 45

See merge request adacore/colibri!27

tests/sat/issue_45.smt2

+;; produced by colibri.drv ;;
+(set-logic ALL)
+(set-info :smt-lib-version 2.6)
+
+
+
+(declare-const x Float32)
+
+(declare-const y Float32)
+
+(declare-const z Float32)
+
+;; Assume
+(assert (fp.leq (fp #b0 #b00000000 #b00000000000000000000000) x))
+
+;; Assume
+(assert (fp.leq (fp #b0 #b00000000 #b00000000000000000000000) y))
+
+;; Assume
+(assert (fp.leq (fp #b0 #b00000000 #b00000000000000000000000) z))
+
+;; Assume
+(assert (fp.leq x (fp #b0 #b10010111 #b00000000000000000000000)))
+
+;; Assume
+(assert (fp.leq y (fp #b0 #b10010111 #b00000000000000000000000)))
+
+
+(assert
+  (not (= (ite (fp.lt (fp.neg (fp.mul RNE x y)) z) true false) true)))
+
+(check-sat)