Transactions reverted "Fail with error 'Not enough funds to repay dydx loan!"

[olegmitrakhovich]

So far the bot was able to find some ARB opportunities, but all 3 transactions were reverted:
https://etherscan.io/address/0x92E52890cfA407D9713A6cFcd7FB6F8d50B99FB2

The error I am getting is "Fail with error 'Not enough funds to repay dydx loan!", no idea why this is happening? My theory is that the prices that the bot is finding are wrong, therefore the calculation of profit for that transaction is wrong. I tried switching to another service like QuickNode instead of Infura, but the result is the same. Any ideas are welcome :)

[olegmitrakhovich]

New block received. Block # 10769902
Kyber -> Uniswap. Dai input / output: 20000 / 20226.65515378271518166
Uniswap -> Kyber. Dai input / output: 20000 / 19864.450886301560153009
<------------------Using Gas Price:----------------------->
<BN: 4614ff8200>
Arb opportunity found Kyber -> Uniswap!
Expected profit: 55.41484450071518166 Dai
New block received. Block # 10769903
Kyber -> Uniswap. Dai input / output: 20000 / 20002.773397261110680253
Uniswap -> Kyber. Dai input / output: 20000 / 19864.36329089209059149
<------------------Using Gas Price:----------------------->
<BN: 4614ff8200>
Kyber -> Uniswap. Dai input / output: 20000 / 20002.773397261110680253
Uniswap -> Kyber. Dai input / output: 20000 / 19864.36329089209059149
<------------------Using Gas Price:----------------------->
<BN: 4614ff8200>
New block received. Block # 10769904
New block received. Block # 10769905
New block received. Block # 10769906
(node:30758) UnhandledPromiseRejectionWarning: Error: Transaction has been reverted by the EVM:
{
"blockHash": "0x5ab8fd72d3c70c8592a81de9b42b6c1056f72393b8119b95d6e7f5cbe5e28ee4",
"blockNumber": 10769905,
"contractAddress": null,
"cumulativeGasUsed": 7898434,
"from": "0x91df1a2da70f5a9085773ea483aa46f7c13a728f",
"gasUsed": 1217128,
"logs": [],
"logsBloom": "0x000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000$
"status": false,
"to": "0x92e52890cfa407d9713a6cfcd7fb6f8d50b99fb2",
"transactionHash": "0x92fd033de7fd2807f594a812cb96746c05b62732331e208e67cf2bae8cb0d990",
"transactionIndex": 74
}
at Object.TransactionError (/root/Defi-Arb-Bot/node_modules/web3-core-helpers/src/errors.js:96:21)
at Object.TransactionRevertedWithoutReasonError (/root/Defi-Arb-Bot/node_modules/web3-core-helpers/src/errors.js:108:21)
at /root/Defi-Arb-Bot/node_modules/web3-core-method/src/index.js:482:48
at
at process._tickCallback (internal/process/next_tick.js:188:7)
(node:30758) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or $
Kyber -> Uniswap. Dai input / output: 20000 / 19943.426926241242587365

[olegmitrakhovich]

https://bloxy.info/tx/0x92fd033de7fd2807f594a812cb96746c05b62732331e208e67cf2bae8cb0d990

[olegmitrakhovich]

[cnspot]

it mean uniswap sell price<buy price ,so money be come lesser?

[olegmitrakhovich]

the prices that I am getting are just wrong and there was no ARB in actuality. @cnspot

[cnspot]

this bug had fixed now？
the bug of geting wrong prices

[StrawberryFlavor]

Maybe it would be better not to use dydx loan, just arbitrage on uniswap, the trading pair can be as follows: WETH--> token, token --> DAI, DAI-WETH, this is just an example. This can avoid the extra transaction cost of loan and only use the existing balance

[olegmitrakhovich]

hmmm good idea...pull request? @StrawberryFlavor

[krishanb4]

I think in your wallet must have dydx interest pay amount before getting loan

[olegmitrakhovich]

sorry, what do you mean? @krishanb4

[krishanb4]

if you use DAI(example) your wallet must have dydx fee(DAI) before start arbi. Because if your profit cannot pay dydx loan fee you have to pay it from your wallet DAI balance.