Smart contracts are an attractive target for attackers, as evidenced by a long history of security incidents. A current limitation of smart contract verification tools is that they are not really effective in expressing and verifying liquidity properties regarding the exchange of crypto-assets: for example, is it true that in every reachable state a user can fire a sequence of transactions to withdraw a given amount of crypto-assets? We propose Solvent, a tool aimed at verifying these kinds of properties, which are beyond the reach of existing verification tools for Solidity. We evaluate the effectiveness and performance of Solvent through a common benchmark of smart contracts.
@article{arxiv.2404.17864,
title = {Solvent: liquidity verification of smart contracts},
author = {Massimo Bartoletti and Angelo Ferrando and Enrico Lipparini and Vadim Malvone},
journal= {arXiv preprint arXiv:2404.17864},
year = {2025}
}