Add test cases for division of a large number

Author: jerhard

tests/regression/01-cpa/43-large-n-div.c

@@ -0,0 +1,18 @@
+//PARAM: --enable ana.int.interval --disable ana.int.def_exc
+#include <assert.h>
+
+int main(){
+    // 2^33
+    long long x = 8589934592l;
+    // 2^31 - 1
+    long long y = 2147483647;
+
+    long long z = x/y;
+
+    if(z == 4){
+        // Should be reachable
+        assert(1);
+    }
+
+    assert(z > 2); //UNKNOWN
+}

tests/regression/01-cpa/44-large-n-div2.c

@@ -0,0 +1,23 @@
+//PARAM: --enable ana.int.interval --enable ana.int.def_exc
+#include <assert.h>
+
+int main(){
+    int top;
+    // 2^33
+    long long x = 8589934592l;
+    // 2^31 - 1
+    long long y = 2147483647;
+
+    if(top) {
+        x = x - 1;
+    }
+
+    long long z = x/y;
+
+    if(z == 4){
+        // Should be reachable
+        assert(1);
+    }
+
+    assert(z > 2); //UNKNOWN
+}