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Changed invariant total_supply_is_sum_of_balances (partially passing)

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Thomas Adams
2022-06-02 11:29:28 -07:00
parent 669a22e0ff
commit a6863a059c
1 changed files with 10 additions and 3 deletions
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13
certora/specs/ERC1155Supply.spec
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@ -41,8 +41,13 @@ hook Sstore _balances[KEY uint256 token][KEY address user] uint256 newValue (uin
// status: not passing, because mint and burn are the same as transferring to/from // status: not passing, because mint and burn are the same as transferring to/from
// the 0 address. // the 0 address.
invariant total_supply_is_sum_of_balances(uint256 token) invariant total_supply_is_sum_of_balances(uint256 token)
sumOfBalances[token] == totalSupply(token) + balanceOf(0, token) sumOfBalances[token] == totalSupply(token)
{
preserved {
requireInvariant balanceOfZeroAddressIsZero(token);
}
}
/*
rule total_supply_is_sum_of_balances_as_rule { rule total_supply_is_sum_of_balances_as_rule {
uint256 token; uint256 token;
@ -57,7 +62,7 @@ rule total_supply_is_sum_of_balances_as_rule {
assert sumOfBalances[token] == totalSupply(token) + balanceOf(0, token); assert sumOfBalances[token] == totalSupply(token) + balanceOf(0, token);
} }
*/
/******************************************************************************/ /******************************************************************************/
/// The balance of a token for the zero address must be zero. /// The balance of a token for the zero address must be zero.
@ -75,6 +80,8 @@ hook Sload _balances[...] {
rule held_tokens_should_exist { rule held_tokens_should_exist {
address user; uint256 token; address user; uint256 token;
requireInvariant balanceOfZeroAddressIsZero(token);
// This assumption is safe because of total_supply_is_sum_of_balances // This assumption is safe because of total_supply_is_sum_of_balances
require balanceOf(user, token) <= totalSupply(token); require balanceOf(user, token) <= totalSupply(token);