Add Halmos support for formal verification (#5034)

Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>

test/utils/Arrays.t.sol

@@ -3,11 +3,27 @@
 pragma solidity ^0.8.20;
 
 import {Test} from "forge-std/Test.sol";
+import {SymTest} from "halmos-cheatcodes/SymTest.sol";
 import {Arrays} from "@openzeppelin/contracts/utils/Arrays.sol";
 
-contract ArraysTest is Test {
+contract ArraysTest is Test, SymTest {
     function testSort(uint256[] memory values) public {
         Arrays.sort(values);
+        _assertSort(values);
+    }
+
+    function symbolicSort() public {
+        uint256[] memory values = new uint256[](3);
+        for (uint256 i = 0; i < 3; i++) {
+            values[i] = svm.createUint256("arrayElement");
+        }
+        Arrays.sort(values);
+        _assertSort(values);
+    }
+
+    /// Asserts
+
+    function _assertSort(uint256[] memory values) internal {
         for (uint256 i = 1; i < values.length; ++i) {
             assertLe(values[i - 1], values[i]);
         }