Benchmark

non-incremental/QF_BV/brummayerbiere/nextpoweroftwo128.smt2 

We verify the correctness of the ""next power of 2 algorithm""
from the book ""hacker's delight"" (Warren Jr., Henry).

Algorithm:
int next_power_of_2 (int x)
{
  int i;
  x--;
  for (i = 1; i < sizeof(int) * 8; i = i * 2)
  x = x | (x >> i)
  return x + 1;
}

Bit-width: 128

Contributed by Robert Brummayer (robert.brummayer@gmail.com).
Benchmark
Size39370
Compressed Size4722
License Creative Commons Attribution 4.0 International (CC-BY-4.0)
Categorycrafted
First Occurrence2008-07-07
Generated By—
Generated On—
Generator—
Dolmen OK1
strict Dolmen OK1
check-sat calls1
Query 1
Status unsat
Inferred Status unsat
Size 39362
Compressed Size4732
Max. Term Depth398
Asserts 1
Declared Functions0
Declared Constants1
Declared Sorts 0
Defined Functions0
Defined Recursive Functions 0
Defined Sorts0
Constants0
Declared Datatypes0

Symbols

ite258 not1 =256 let259
extract133 bvnot525 bvand272 bvadd3
bvult3 bvlshr255 zero_extend127

Evaluations

Evaluation Rating Solver Variant Result Wallclock CPU Time
SMT-COMP 2008 0.29 (5/7) Beaver Beaver-1.0 unsat ✅ 7.60000 —
Boolector Boolector unsat ✅ 1.70000 —
CVC3 CVC3-1.5 unknown ❌ 1532.30000 —
MathSAT MathSAT-4.2 unsat ✅ 16.40000 —
Spear Spear unknown ❌ — —
Spear v1.9 (fh-1-2) unknown ❌ — —
SWORD SWORD v0.2 unsat ✅ 832.00000 —
Z3 Z3.2 unsat ✅ 888.80000 —
SMT Evaluation 2013 1.00 (0/9) 4Simp 4Simp-SMT-COMP-2012 default unknown ❌ — —
Abziz abziz_portfolio_2011_minfeatures_2 default unknown ❌ — —
abziz_portfolio_2011_solvers_2 default unknown ❌ — —
abziz_portfolio_2012_minfeatures default unknown ❌ — —
abziz_portfolio_2012_solvers default unknown ❌ — —
AbzizPortfolio-SMT-COMP-2012 default unknown ❌ — —
Boolector Boolector-1.5.118-SMT-EVAL-2013 default unknown ❌ — —
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-HeavyBV-SMT-COMP-2012 default unknown ❌ 396.24500 —
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-2010 default unknown ❌ — —
SONOLAR-SMT-COMP-2011 default unknown ❌ — —
SONOLAR-SMT-COMP-2012 default unknown ❌ — —
STP STP2-SMT-COMP-2011 default unknown ❌ — —
STP2-SMT-COMP-2012 default unknown ❌ — —
simplifyingSTP-SMT-COMP-2010 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 0.11 (8/9) 4Simp 4Simp - 2014 default unsat ✅ 0.50741 0.49592
Abziz abziz_portfolio_all_features default unsat ✅ 5.53320 5.52816
abziz_portfolio_min_features default unsat ✅ 5.43175 5.39318
Boolector Boolector boolector unsat ✅ 7.77192 7.76582
CVC4 CVC4 f7118b2 default unknown ❌ 0.05852 0.04899
MathSAT MathSAT-5.2.12-Main default unsat ✅ 4.30641 8.46035
SONOLAR sonolar_smtcomp-2014 default unsat ✅ 0.69633 0.68490
STP stp-cryptominisat4 default unsat ✅ 0.54381 0.53492
Yices2 Yices-2.2.1-smtcomp2014 default unsat ✅ 0.46763 0.45893
Z3 Z3-4.3.2.a054b099c1d6-x64-debian-6.0.6-SMT-COMP-2014 default unsat ✅ 3.24329 3.23651
SMT-COMP 2015 Boolector Boolector SMT15 QF_BV final boolector_qf_bv unsat ✅ 2.32054 2.31965
CVC4 CVC4-master-2015-06-15-9b32405-main default unsat ✅ 21.53140 43.12940
CVC4-experimental-2015-06-15-ff5745a-main default unsat ✅ 7.37305 14.73080
MathSAT MathSat 5.3.6 main smtcomp2015_main unsat ✅ 2.92995 2.92955
SMT-RAT SMT-RAT-final default unsat ✅ 456.10500 456.32800
STP stp-cryptominisat4 default unsat ✅ 0.46193 0.46093
stp-cmsat4-v15 default unsat ✅ 0.37826 0.37694
stp-cmsat4-mt-v15 default unknown ❌ 0.17256 0.17097
stp-minisat-v15 default unsat ✅ 0.45517 0.45393
Yices2 Yices default unsat ✅ 0.44325 0.44193
Z3 z3 4.4.0 default unsat ✅ 2.89136 2.89256
SMT-COMP 2016 ABC ABC_default default_abc unsat ✅ 0.78971 0.78973
ABC_glucose glucose unsat ✅ 1.68976 1.68352
Boolector Boolector boolector unsat ✅ 1.60551 1.60651
Boolector preprop boolector unsat ✅ 1.66523 1.66611
CVC4 CVC4-master-2016-05-27-cfef263-main default unsat ✅ 6.91866 13.73150
MapleSTP MapleSTP default unsat ✅ 0.59115 0.59140
MapleSTP-mt default unsat ✅ 0.64343 2.06883
MathSAT mathsat-5.3.11-linux-x86_64-Main default unsat ✅ 2.73448 2.73709
MinkeyRink Minkeyrink 2016 default unsat ✅ 0.95234 1.83721
Q3B Q3B default unsat ✅ 4.53569 13.14000
STP stp-cms-exp-2016 default unsat ✅ 0.48085 0.48121
stp-cms-mt-2016 default unsat ✅ 0.47543 1.42783
stp-cms-st-2016 default unsat ✅ 0.47085 0.47107
stp-minisat-st-2016 default unsat ✅ 3.41917 3.42106
Yices2 Yices-2.4.2 default unsat ✅ 0.28048 0.28063
Z3 z3-4.4.1 default unsat ✅ 2.91604 2.91964
SMT-COMP 2017 Boolector Boolector+CaDiCaL SMT17 final boolector unsat ✅ 1.12402 1.09455
Boolector SMT17 final boolector unsat ✅ 6.71308 6.70798
CVC4 CVC4-smtcomp2017-main default unsat ✅ 7.32880 14.64840
MathSAT mathsat-5.4.1-linux-x86_64-Main default unsat ✅ 3.85997 3.84394
MinkeyRink MinkeyRink 2017.3a default unsat ✅ 0.63265 0.63875
Q3B Q3B default unsat ✅ 6.99379 13.24000
STP stp_st default unsat ✅ 0.68539 0.68416
stp_mt default unsat ✅ 0.71032 1.52998
Yices2 Yices2-Main default unsat ✅ 0.35992 0.35927
Z3 z3-4.5.0 default unsat ✅ 6.89945 5.11511
SMT-COMP 2018 Boolector Boolector_default unsat ✅ 0.78237 0.78224
CVC4 master-2018-06-10-b19c840-competition-default_default unsat ✅ 5.73809 5.73783
MathSAT mathsat-5.5.2-linux-x86_64-Main_default unsat ✅ 3.59115 3.59221
MinkeyRink Minkeyrink MT_mt unsat ✅ 0.41352 1.27774
Minkeyrink ST_st unsat ✅ 0.40085 0.40073
STP STP-CMS-st-2018_default-no-stderr unsat ✅ 0.59514 0.59496
STP-CMS-mt-2018_multicore-no-stderr unsat ✅ 0.47286 1.22115
STP-Riss-st-2018_riss-no-stderr unsat ✅ 0.80583 0.80583
Yices2 Yices 2.6.0_default unsat ✅ 0.35023 0.35015
Z3 z3-4.7.1_default unsat ✅ 3.22077 3.22069
SMT-COMP 2024 0.17 (5/6) Bitwuzla Bitwuzla unsat ✅ 1.15239 1.05230
cvc5 cvc5 unsat ✅ 3.21189 3.11083
SMTInterpol SMTInterpol unknown ❌ 1202.21278 1233.71463
STP STP unsat ✅ 0.48990 0.39016
Yices2 Yices2 unsat ✅ 0.41285 0.31335
Z3alpha Z3-alpha unsat ✅ 107.64093 107.50762