Add SB Curated (copied from the smartbugs repository).

dataset/arithmetic/integer_overflow_add.sol

@@ -0,0 +1,19 @@
+/*
+ * @source: https://github.com/ConsenSys/evm-analyzer-benchmark-suite/blob/master/benchmarks/integer_overflow_add.sol
+ * @author: -
+ * @vulnerable_at_lines: 17
+ */
+
+//Single transaction overflow
+//Post-transaction effect: overflow escapes to publicly-readable storage
+
+pragma solidity ^0.4.19;
+
+contract IntegerOverflowAdd {
+    uint public count = 1;
+
+    function run(uint256 input) public {
+        // <yes> <report> ARITHMETIC
+        count += input;
+    }
+}