Added invariant balanceOfZeroAddressIsZero (partially passing)

3 years ago · 15e847c835
parent 8e283704c3
commit 15e847c835
1 changed files with 5 additions and 1 deletions
--- a/certora/specs/ERC1155Supply.spec
+++ b/certora/specs/ERC1155Supply.spec
@ -60,6 +60,10 @@ rule total_supply_is_sum_of_balances_as_rule {

 /******************************************************************************/

+/// The balance of a token for the zero address must be zero.
+invariant balanceOfZeroAddressIsZero(uint256 token)
+    balanceOf(0, token) == 0
+
 // if a user has a token, then the token should exist

 /*