Error.sol

pragma solidity ^0.4.0;

contract Contract1 {
    function call1() public pure returns(bool) {
        return true;
    }
}

contract Contract2 {
    function call2() public pure returns(string) {
        return "test";
    }
}

contract Error {
    Contract1 private _contract1;
    Contract2 private _contract2;
    
    function Error() public {
        _contract1 = new Contract1();
        _contract2 = new Contract2();
    }
    
    function trigger1() public view {
        Contract1(_contract2).call1();
    }
    
    function trigger2() public view {
        Contract2(_contract1).call2();
    }
}

output.log

creation of browser/error.sol:Error pending...
[vm] from:0xca3...a733c, to:browser/error.sol:Error.(constructor), value:0 wei, data:0x606...d0029, 0 logs, hash:0x64c...56af8
Details
Debug
 status 	0x1 Transaction mined and execution succeed
 contractAddress 	0x5e72914535f202659083db3a02c984188fa26e9f
 from 	0xca35b7d915458ef540ade6068dfe2f44e8fa733c
 to 	browser/error.sol:Error.(constructor)
 gas 	3000000 gas
 transaction cost 	435364 gas 
 execution cost 	308320 gas 
 hash 	0x64cecb4012458184fdc41e22e5dc3dee76231a7162bffd1a0acdb41b23956af8
 input 	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
 decoded input 	{}
 decoded output 	 - 
 logs 	[]
 value 	0 wei
[call] from: - , to:browser/error.sol:Error.trigger2(), data:0a2c2...c25fc, return: 
Details
Debug
{}
 from 	 - 
 to 	browser/error.sol:Error.trigger2() 0x5e72914535f202659083db3a02c984188fa26e9f
 transaction cost 	23272 gas (Cost only applies when called by a contract)
 execution cost 	2000 gas (Cost only applies when called by a contract)
 input 	0a2c25fc
 decoded input 	{}
 decoded output 	{}
 logs 	[]
undefined errored: VM error: revert.
revert	The transaction has been reverted to the initial state.
	Debug the transaction to get more information. 
[call] from: - , to:browser/error.sol:Error.trigger1(), data:64248...48e89, return: 
Details
Debug
{}
 from 	 - 
 to 	browser/error.sol:Error.trigger1() 0x5e72914535f202659083db3a02c984188fa26e9f
 transaction cost 	23294 gas (Cost only applies when called by a contract)
 execution cost 	2022 gas (Cost only applies when called by a contract)
 input 	64248e89
 decoded input 	{}
 decoded output 	{}
 logs 	[]
undefined errored: VM error: revert.
revert	The transaction has been reverted to the initial state.
	Debug the transaction to get more information. 
call to browser/error.sol:Error.trigger1
[call] from: - , to:browser/error.sol:Error.trigger1(), data:64248...48e89, return: 
Details
Debug
{}
 from 	 - 
 to 	browser/error.sol:Error.trigger1() 0x5e72914535f202659083db3a02c984188fa26e9f
 transaction cost 	23294 gas (Cost only applies when called by a contract)
 execution cost 	2022 gas (Cost only applies when called by a contract)
 input 	64248e89
 decoded input 	{}
 decoded output 	{}
 logs 	[]
call to browser/error.sol:Error.trigger1 errored: VM error: revert.
revert	The transaction has been reverted to the initial state.
	Debug the transaction to get more information. 
call to browser/error.sol:Error.trigger2
[call] from: - , to:browser/error.sol:Error.trigger2(), data:0a2c2...c25fc, return: 
Details
Debug
{}
 from 	 - 
 to 	browser/error.sol:Error.trigger2() 0x5e72914535f202659083db3a02c984188fa26e9f
 transaction cost 	23272 gas (Cost only applies when called by a contract)
 execution cost 	2000 gas (Cost only applies when called by a contract)
 input 	0a2c25fc
 decoded input 	{}
 decoded output 	{}
 logs 	[]
call to browser/error.sol:Error.trigger2 errored: VM error: revert.
revert	The transaction has been reverted to the initial state.
	Debug the transaction to get more information.