Using fhevm isnt giving me the expected results, gives error sometimes

Zama fhEVM
1

i have been working on a project which uses an Encrypted 2d matrix, with 4X4 matrix i get the expected results, but in my project i need to use a 7X7 matrix, if i use it then Rpc error is generated,
ill be sharing my code with you for more convenience,

function store() public {
        init = 0;
        depth = TFHE.asEuint32(1);
        a = TFHE.asEuint32(2);
        b = TFHE.asEuint32(3);
        m =  [
                  [TFHE.asEuint32(0),TFHE.asEuint32(1),TFHE.asEuint32(1),TFHE.asEuint32(1)],
                  [TFHE.asEuint32(1),TFHE.asEuint32(0),TFHE.asEuint32(1),TFHE.asEuint32(0)],
                  [TFHE.asEuint32(1),TFHE.asEuint32(1),TFHE.asEuint32(0),TFHE.asEuint32(0)],
                  [TFHE.asEuint32(1),TFHE.asEuint32(0),TFHE.asEuint32(0),TFHE.asEuint32(0)]];
        for (uint i = 0; i < 4; i++) {
            r[i] = TFHE.randEuint32();
            t[i] = TFHE.randEuint32();
        }
        distance=[0,1,1,1];
        iv = TFHE.asEuint32(0);

    }
   function setDiag() public{
    for(uint i=0; i<4 ; i++)
    {   
            m[i][i]=TFHE.select(affected[i],TFHE.add(TFHE.add(a,b),TFHE.add(r[i],t[i])),TFHE.add(a,TFHE.add(r[i],t[i])));
        }
   }
 function ivCal() public returns(euint32) {
    for(uint i=0;i<4;i++){
        iv =TFHE.add(iv,(TFHE.div(TFHE.mul(TFHE.sub(m[i][i],a),uint32((1 * 100000)/(2 ** distance[i]))),100)));
    }
    for(uint i=0;i<4;i++)
    {
        iv =TFHE.sub(iv,TFHE.div(TFHE.add(TFHE.mul(r[i],uint32(1*100000 /(2**distance[i]))),(TFHE.mul(t[i],uint32((1*100000)/(2**distance[i]))))),100));
    }
     iv=TFHE.div(iv,TFHE.decrypt(b));
    return iv;
}

this code is giving me the expected results, but when i change the 2d array to 7X7 wwhich the actual requirement of my project, it shows wrong values or rpc error, here’s the 7X7 code:

function store() public {
        init = 0;
        depth = TFHE.asEuint32(3);
        a = TFHE.asEuint32(2);
        b = TFHE.asEuint32(3);
        m = [
            [TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(1), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(0)],
            [TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(0)],
            [TFHE.asEuint32(1), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(0)],
            [TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(0)],
            [TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(1)],
            [TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(0)],
            [TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(0), TFHE.asEuint32(1), TFHE.asEuint32(0), TFHE.asEuint32(0)]
        ];
 distance=[0,1,1,1,2,3,3];
        for (uint i = 0; i < 7; i++) {
            r[i] = TFHE.randEuint32();
            t[i] = TFHE.randEuint32();
        }
        iv = TFHE.asEuint32(0);
}
 function setDiag() public {
        for (uint i = 0; i < 7; i++) {
            m[i][i] = TFHE.select(affected[i], TFHE.add(TFHE.add(a, b), TFHE.add(r[i], t[i])), TFHE.add(a, TFHE.add(r[i], t[i])));
        }
    }
function ivCal() public returns(euint32) {
    for(uint i=0;i<7;i++){
        //uint i=1;
        iv =TFHE.add(iv,(TFHE.div(TFHE.mul(TFHE.sub(m[i][i],a),uint32((1 * 100000)/(2 ** distance[i]))),100)));
    }
    for(uint i=0;i<7;i++)
    {
        iv =TFHE.sub(iv,TFHE.div(TFHE.add(TFHE.mul(r[i],uint32(1*100000 /(2**distance[i]))),(TFHE.mul(t[i],uint32((1*100000)/(2**distance[i]))))),100));
    }
     iv=TFHE.div(iv,TFHE.decrypt(b));
     IV=TFHE.decrypt(iv);
    return iv;
    }

the error:

Gas estimation failed
Gas estimation errored with the following message (see below). The transaction execution will likely fail. Do you want to force sending?
Returned error: {"jsonrpc":"2.0","error":"rpc error: code = Unknown desc = execution reverted","id":6595461375185809}

please look to this my deadline is very close.

2

First of all your code does not compile as it is not valid Solidity code. It would be easier if you gave us a valid snippet or link to a github repo containing at least code which compiles.
Secondly, did you try to force send your transaction? Your error suggests it is a problem in gas estimation. If you are using hardhat for your tests, set gasLimit to a high value such as {gasLimit: 5_000_000} in your function call in your hardhat test. There is a known issue with gas estimation in fhevm.