Entropy Analysis of Smart Contracts EVM opcodes

entropy.pycalculates number of occurrences of each mnemonic in the contracts from the contracts/ folder. There are 50 contracts taken from etherescan.io. Before running the script make sure you installed the EVM disassembler, you can do that using pip install pyevmasm. At operations that have a dynamic gas cost (a formula calculating it) their minimum was taken. opcode-gas-costs.csv was taken from https://github.com/djrtwo/evm-opcode-gas-costs/blob/master/opcode-gas-costs_EIP-150_revision-1e18248_2017-04-12.csv and modified according to the needs.

#Results:

Mnemonics	Occurences	Gas Cost	Gas Spent	Occ. per Contract
PUSH1	118464	3	355392	2369.28
PUSH2	48963	3	146889	979.26
SWAP1	48165	3	144495	963.3
DUP1	47523	3	142569	950.46
POP	44334	2	88668	886.68
DUP2	40002	3	120006	800.04
ADD	38373	3	115119	767.46
JUMPDEST	33591	1	33591	671.82
MSTORE	29046	3	87138	580.92
AND	21474	3	64422	429.48
MLOAD	20520	3	61560	410.4
ISZERO	20154	3	60462	403.08
JUMPI	20049	10	200490	400.98
SWAP2	19059	3	57177	381.18
DUP3	18066	3	54198	361.32
JUMP	16089	8	128712	321.78
SUB	12885	3	38655	257.7
SLOAD	11676	200	2335200	233.52
REVERT	11001	0	0	220.02
DUP4	10815	3	32445	216.3
PUSH20	10080	3	30240	201.6
STOP	8394	0	0	167.88
PUSH4	8229	3	24687	164.58
SWAP3	7530	3	22590	150.6
SHA3	6087	30	182610	121.74
EQ	5373	3	16119	107.46
MUL	5067	5	25335	101.34
SHL	5010	3	15030	100.2
SSTORE	4884	5000	24420000	97.68
LT	4602	3	13806	92.04
DUP5	4428	3	13284	88.56
DIV	3981	5	19905	79.62
PUSH3	3897	3	11691	77.94
CALLDATALOAD	3672	3	11016	73.44
EXP	3633	10	36330	72.66
INVALID	3351	0	0	67.02
RETURNDATASIZE	3102	2	6204	62.04
PUSH32	2805	3	8415	56.1
DUP6	2793	3	8379	55.86
GT	2727	3	8181	54.54
CALLVALUE	2646	2	5292	52.92
CALLER	2478	2	4956	49.56
NOT	2406	3	7218	48.12
SWAP4	2148	3	6444	42.96
OR	2064	3	6192	41.28
DUP7	2001	3	6003	40.02
RETURN	1857	0	0	37.14
DUP8	1758	3	5274	35.16
CALLDATASIZE	1548	2	3096	30.96
EXTCODESIZE	1170	700	819000	23.4
CODECOPY	1167	2	2334	23.34
GAS	1167	2	2334	23.34
RETURNDATACOPY	1149	3	3447	22.98
DUP9	1020	3	3060	20.4
CALL	909	Complex	N\A	18.18
SWAP5	903	3	2709	18.06
DUP10	783	3	2349	15.66
ADDRESS	651	2	1302	13.02
SWAP6	567	3	1701	11.34
LOG3	525	1500	787500	10.5
PUSH5	447	3	1341	8.94
DUP11	435	3	1305	8.7
TIMESTAMP	411	2	822	8.22
STATICCALL	390	40	15600	7.8
SHR	327	3	981	6.54
PUSH8	303	3	909	6.06
PUSH29	300	3	900	6.0
DUP12	285	3	855	5.7
CALLDATACOPY	285	2	570	5.7
LOG1	276	750	207000	5.52
LOG2	267	1125	300375	5.34
PUSH16	252	3	756	5.04
PUSH6	210	3	630	4.2
SLT	192	3	576	3.84
SWAP7	186	3	558	3.72
SWAP8	174	3	522	3.48
XOR	165	3	495	3.3
PUSH7	162	3	486	3.24
PUSH21	144	3	432	2.88
MOD	144	5	720	2.88
NUMBER	141	2	282	2.82
PUSH19	138	3	414	2.76
PUSH15	138	3	414	2.76
ORIGIN	135	2	270	2.7
DUP13	135	3	405	2.7
GASPRICE	129	2	258	2.58
DUP14	126	3	378	2.52
GASLIMIT	96	2	192	1.92
CODESIZE	96	2	192	1.92
PUSH22	78	3	234	1.56
PUSH28	78	3	234	1.56
DUP15	78	3	234	1.56
SWAP9	75	3	225	1.5
BALANCE	75	400	30000	1.5
SWAP13	72	3	216	1.44
SDIV	66	5	330	1.32
PUSH27	63	3	189	1.26
MSTORE8	63	3	189	1.26
SWAP11	63	3	189	1.26
SWAP10	63	3	189	1.26
PUSH12	60	3	180	1.2
GETPC	60	2	120	1.2
PUSH10	60	3	180	1.2
PUSH9	51	3	153	1.02
DELEGATECALL	51	Complex	N\A	1.02
PUSH13	48	3	144	0.96
PUSH17	48	3	144	0.96
PUSH24	48	3	144	0.96
BLOCKHASH	42	20	840	0.84
DUP16	42	3	126	0.84
LOG4	42	1875	78750	0.84
PUSH25	42	3	126	0.84
DIFFICULTY	39	2	78	0.78
PUSH18	36	3	108	0.72
CREATE2	36	32000	1152000	0.72
CREATE	33	32000	1056000	0.66
SAR	33	3	99	0.66
SWAP12	33	3	99	0.66
SWAP14	30	3	90	0.6
PUSH14	30	3	90	0.6
MSIZE	27	2	54	0.54
PUSH11	27	3	81	0.54
PUSH26	21	3	63	0.42
SIGNEXTEND	21	5	105	0.42
SGT	21	3	63	0.42
PUSH31	21	3	63	0.42
ADDMOD	18	8	144	0.36
BYTE	18	3	54	0.36
LOG0	18	375	6750	0.36
SMOD	18	5	90	0.36
SELFDESTRUCT	18	25000	450000	0.36
COINBASE	18	2	36	0.36
PUSH23	18	3	54	0.36
MULMOD	15	8	120	0.3
EXTCODEHASH	15	700	10500	0.3
SWAP16	15	3	45	0.3
PUSH30	12	3	36	0.24
EXTCODECOPY	9	700	6300	0.18
CALLCODE	9	Complex	N\A	0.18
SWAP15	3	3	9	0.06