Benchmark

non-incremental/QF_ABV/brummayerbiere2/countbitstableuninit0016.smt2

Count bits pop(x) algorithm, table lookup method, buggy version
From the book "Hacker's delight" by Henry S. Warren, Jr., page 71
The algorithm precomputes pop(x) for x in range 0 to 255 and stores it
into a lookup table. However, one precomputed value is uninitialized.

We try to cross-check it with the obvious method of counting bits:
for (s = i = 0; i < BW; i++)
  if (x & (1 << i))
    s++;

Contributed by Robert Brummayer (robert.brummayer@gmail.com)

Benchmark
Size	11242
Compressed Size	1478
License	Creative Commons Attribution 4.0 International (CC-BY-4.0)
Category	crafted
First Occurrence	2008-07-07
Generated By	—
Generated On	—
Generator	—
Dolmen OK	1
strict Dolmen OK	1
check-sat calls	1

Query 1

Status	sat
Inferred Status	sat
Size	11234
Compressed Size	1459
Max. Term Depth	259
Asserts	1
Declared Functions	0
Declared Constants	2
Declared Sorts	0
Defined Functions	0
Defined Recursive Functions	0
Defined Sorts	0
Constants	0
Declared Datatypes	0

Symbols

ite	33	not	1	=	34	let	15
concat	2	extract	2	bvnot	17	bvand	16
bvadd	17	bvshl	16	bvlshr	1	zero_extend	16
select	2	store	255

Evaluations

Evaluation	Rating	Solver	Variant	Result	Wallclock	CPU Time
SMT-COMP 2009		Boolector	Boolector	sat ✅	0.20000	—
			Boolector 1.2	sat ✅	0.40000	—
		CVC3	CVC3 2.0	sat ✅	2.40000	—
		MathSAT	MathSAT 4.3	sat ✅	328.60000	—
		Yices2	Yices 2 proto	sat ✅	0.70000	—
SMT Evaluation 2013	0.86 (1/7)	Boolector	Boolector-1.5.118-SMT-EVAL-2013 default	sat ✅	0.01535	—
			Boolector-SMT-COMP-2011 default	unknown ❌	—	—
			Boolector-SMT-COMP-2012 default	unknown ❌	—	—
		CVC3	CVC3-SMT-COMP-2010 default	unknown ❌	—	—
			CVC3-SMT-COMP-2011 default	unknown ❌	—	—
			CVC3-SMT-COMP-2012 default	unknown ❌	—	—
		CVC4	CVC4-SMT-COMP-2012-Resubmission default	unknown ❌	—	—
			CVC4-SMT-EVAL-2013 default	unknown ❌	—	—
		MathSAT	MathSAT5-5.2.6-SMT-EVAL-2013 default	unknown ❌	—	—
			MathSAT5-SMT-COMP-2011 default	unknown ❌	—	—
			MathSAT5-SMT-COMP-2012 default	unknown ❌	—	—
		SONOLAR	SONOLAR-2013-05-15-SMT-EVAL-2013 default	unknown ❌	—	—
			SONOLAR-SMT-COMP-2011 default	unknown ❌	—	—
			SONOLAR-SMT-COMP-2012 default	unknown ❌	—	—
		Tiffany de Wintermonte	TdW-SMT-COMP-2012 default	unknown ❌	—	—
		Z3	Z3-4.3.2.a054b099c1d6-x64-debian-6.0.6-SMT-EVAL-2013 default	unknown ❌	—	—
			Z3-SMT-COMP-2011 default	unknown ❌	—	—
SMT-COMP 2014		Boolector	Boolector boolectord	sat ✅	0.05961	0.05199
			Boolector boolectorj	sat ✅	0.05281	0.04199
		CVC4	CVC4 f7118b2 default	sat ✅	14.36770	14.36280
		Kleaver	Kleaver-indie-more-typed kleaver_indie_1	sat ✅	0.07822	0.07699
			Kleaver-indie-more-typed kleaver_portfolio	sat ✅	0.11433	0.27796
		MathSAT	MathSAT-5.2.12-Main default	sat ✅	0.44876	0.43993
		SONOLAR	sonolar_smtcomp-2014 default	sat ✅	0.36263	0.35095
		Yices2	Yices-2.2.1-smtcomp2014 default	sat ✅	0.18610	0.17797
		Z3	Z3-4.3.2.a054b099c1d6-x64-debian-6.0.6-SMT-COMP-2014 default	sat ✅	6.70158	6.69598
SMT-COMP 2015		Boolector	Boolector SMT15 QF_AUFBV final boolector_qf_aufbv	sat ✅	0.17357	0.17297
		CVC4	CVC4-master-2015-06-15-9b32405-main default	sat ✅	113.63300	113.67700
			CVC4-experimental-2015-06-15-ff5745a-main default	sat ✅	0.69422	0.69189
		MathSAT	MathSat 5.3.6 main smtcomp2015_main	sat ✅	0.46073	0.45993
		Yices2	Yices default	sat ✅	0.19023	0.18897
		Z3	z3 4.4.0 default	sat ✅	0.04714	0.04699
SMT-COMP 2016		Boolector	Boolector boolector	sat ✅	0.12023	0.12070
		CVC4	CVC4-master-2016-05-27-cfef263-main default	sat ✅	0.67474	0.67533
		MathSAT	mathsat-5.3.11-linux-x86_64-Main default	sat ✅	0.43285	0.43469
		Yices2	Yices-2.4.2 default	sat ✅	0.17916	0.17921
		Z3	z3-4.4.1 default	sat ✅	9.56892	9.57568
SMT-COMP 2017		Boolector	Boolector SMT17 final boolector	sat ✅	0.39276	0.39045
		CVC4	CVC4-smtcomp2017-main default	sat ✅	0.58937	0.58892
		MathSAT	mathsat-5.4.1-linux-x86_64-Main default	sat ✅	0.43622	0.43685
		Yices2	Yices2-Main default	sat ✅	0.18184	0.17385
		Z3	z3-4.5.0 default	sat ✅	0.05686	0.05476
SMT-COMP 2018	0.20 (4/5)	Boolector	Boolector_default	sat ✅	0.26403	0.26397
		CVC4	master-2018-06-10-b19c840-competition-default_default	sat ✅	0.41312	0.41332
		MathSAT	mathsat-5.5.2-linux-x86_64-Main_default	unknown ❌	0.45587	0.45682
		Yices2	Yices 2.6.0_default	sat ✅	0.18038	0.18033
		Z3	z3-4.7.1_default	sat ✅	0.05942	0.05936
SMT-COMP 2019		Boolector	Boolector-wrapped-sq_default	sat ✅	0.16692	0.16695
			Poolector-wrapped-sq_default	sat ✅	0.27668	0.43084
		CVC4	CVC4-2019-06-03-d350fe1-wrapped-sq_default	sat ✅	0.42758	0.42794
		Par4	Par4-wrapped-sq_default	sat ✅	0.17683	0.00604
		Yices2	Yices 2.6.2-wrapped-sq_default	sat ✅	0.16471	0.16473
		Z3	z3-4.8.4-d6df51951f4c-wrapped-sq_default	sat ✅	0.05844	0.05843
SMT-COMP 2025		Bitwuzla	Bitwuzla	sat ✅	1.14944	1.03105
		cvc5	cvc5	sat ✅	29.62712	29.50374
		SMTInterpol	SMTInterpol	sat ✅	814.14736	846.99790
		Yices2	Yices2	sat ✅	0.37728	0.25389
		Z3	Z3-Owl-base	sat ✅	241.49815	241.33493
		Z3-Owl	Z3-Owl	sat ✅	7.64494	7.52034