Ethereum linking library with contract not working as accepted...returning any state variable returns just the default value

my library

pragma solidity ^0.5.8;

library SafeMath {

    function add(uint256 a,uint256 b) public pure returns (uint256) {
        return a+b;
    }
}

My contract

pragma solidity ^0.5.8;

import "./SafeMath.sol";

contract Test {

using SafeMath for uint256;

uint256 c = 10;

    function addition() public {
        uint256 a = 10;
        uint256 b = 10;
        c = a.add(b);
    }

    function getValue() view public returns (uint256) {
        return c;
    }

}

THE STEPS I AM FOLLOWING ARE:-

step 1 :- I am compiling SafeMath.sol using commnadline [solc –abi –bin safeMath.sol ]

step 2 :- I am deploying the same with web3 and getting the address as 0x785763……..

step3 :- I am linking and compiling the Test.sol contract using the command
solc –abi –bin Test.sol –libraries SafeMath:0x785763…….. -o bin

step4 :- I am deploying this contract and trying to just get the value of c without performing the addition operation ,i am getting default value 0

also no events gets fired in addition method inside contract(not shown in this code)

//—————————————————
//MY WEB3 CODE

var UserRepositoryInstance1 = web3.eth.contract(UserRepositoryABI1).at(UserRepositoryAddress1);

app.get(‘/checkAdd’, function (req, res) {
web3.eth.defaultAccount = web3.eth.coinbase;
var i=UserRepositoryInstance1.getValue();
console.log(i)
})

ANY HELP WOULD BE APPRECIATED THANK YOU.