Benchmark

non-incremental/QF_BV/brummayerbiere/nextpoweroftwo032.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: 32

Contributed by Robert Brummayer (robert.brummayer@gmail.com).
Benchmark
Size9847
Compressed Size1547
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 9839
Compressed Size1582
Max. Term Depth110
Asserts 1
Declared Functions0
Declared Constants1
Declared Sorts 0
Defined Functions0
Defined Recursive Functions 0
Defined Sorts0
Constants0
Declared Datatypes0

Symbols

ite66 not1 =64 let67
extract37 bvnot141 bvand80 bvadd3
bvult3 bvlshr63 zero_extend31

Evaluations

Evaluation Rating Solver Variant Result Wallclock CPU Time
SMT Evaluation 2013 4Simp 4Simp-SMT-COMP-2012 default unsat ✅ 0.03998 —
Abziz abziz_portfolio_2011_minfeatures_2 default unsat ✅ 0.07514 —
abziz_portfolio_2011_solvers_2 default unsat ✅ 0.09230 —
abziz_portfolio_2012_minfeatures default unsat ✅ 0.07424 —
abziz_portfolio_2012_solvers default unsat ✅ 0.08584 —
AbzizPortfolio-SMT-COMP-2012 default unsat ✅ 0.07449 —
Boolector Boolector-1.5.118-SMT-EVAL-2013 default unsat ✅ 0.02318 —
Boolector-SMT-COMP-2011 default unsat ✅ 0.09110 —
Boolector-SMT-COMP-2012 default unsat ✅ 0.02522 —
CVC3 CVC3-SMT-COMP-2010 default unsat ✅ 469.21300 —
CVC3-SMT-COMP-2011 default unsat ✅ 457.05800 —
CVC3-SMT-COMP-2012 default unsat ✅ 472.46100 —
CVC4 CVC4-SMT-COMP-2012-Resubmission default unsat ✅ 0.10227 —
CVC4-SMT-EVAL-2013 default unsat ✅ 0.49543 —
MathSAT MathSAT5-5.2.6-SMT-EVAL-2013 default unsat ✅ 0.09716 —
MathSAT5-HeavyBV-SMT-COMP-2012 default unknown ❌ 1.50548 —
MathSAT5-SMT-COMP-2011 default unsat ✅ 0.09876 —
MathSAT5-SMT-COMP-2012 default unsat ✅ 0.09504 —
SONOLAR SONOLAR-2013-05-15-SMT-EVAL-2013 default unsat ✅ 0.02539 —
SONOLAR-SMT-COMP-2010 default unsat ✅ 0.60299 —
SONOLAR-SMT-COMP-2011 default unsat ✅ 0.03960 —
SONOLAR-SMT-COMP-2012 default unsat ✅ 0.02874 —
STP STP2-SMT-COMP-2011 default unsat ✅ 0.03499 —
STP2-SMT-COMP-2012 default unsat ✅ 0.05029 —
simplifyingSTP-SMT-COMP-2010 default unsat ✅ 0.06328 —
Z3 Z3-4.3.2.a054b099c1d6-x64-debian-6.0.6-SMT-EVAL-2013 default unsat ✅ 0.06596 —
Z3-SMT-COMP-2011 default unsat ✅ 0.06849 —
SMT-COMP 2014 4Simp 4Simp - 2014 default unsat ✅ 0.03759 0.02700
Abziz abziz_portfolio_all_features default unsat ✅ 0.13453 0.11798
abziz_portfolio_min_features default unsat ✅ 0.13947 0.11998
Boolector Boolector boolector unsat ✅ 0.11037 0.10198
CVC4 CVC4 f7118b2 default unsat ✅ 0.25097 0.46693
MathSAT MathSAT-5.2.12-Main default unsat ✅ 0.10577 0.09698
SONOLAR sonolar_smtcomp-2014 default unsat ✅ 0.03656 0.02499
STP stp-cryptominisat4 default unsat ✅ 0.05660 0.05499
Yices2 Yices-2.2.1-smtcomp2014 default unsat ✅ 0.02013 0.01100
Z3 Z3-4.3.2.a054b099c1d6-x64-debian-6.0.6-SMT-COMP-2014 default unsat ✅ 0.05342 0.05299
SMT-COMP 2015 Boolector Boolector SMT15 QF_BV final boolector_qf_bv unsat ✅ 0.08286 0.08199
CVC4 CVC4-master-2015-06-15-9b32405-main default unsat ✅ 0.47792 0.93786
CVC4-experimental-2015-06-15-ff5745a-main default unsat ✅ 0.24620 0.47393
MathSAT MathSat 5.3.6 main smtcomp2015_main unsat ✅ 0.13977 0.13898
SMT-RAT SMT-RAT-final default unsat ✅ 5.61404 5.61615
STP stp-cryptominisat4 default unsat ✅ 0.05703 0.05599
stp-cmsat4-v15 default unsat ✅ 0.04560 0.04499
stp-cmsat4-mt-v15 default unknown ❌ 0.04657 0.04499
stp-minisat-v15 default unsat ✅ 0.04878 0.04799
Yices2 Yices default unsat ✅ 0.01179 0.01100
Z3 z3 4.4.0 default unsat ✅ 0.08987 0.08998
SMT-COMP 2016 ABC ABC_default default_abc unsat ✅ 0.09543 0.09544
ABC_glucose glucose unsat ✅ 0.17525 0.17613
Boolector Boolector boolector unsat ✅ 0.11294 0.11335
Boolector preprop boolector unsat ✅ 0.11817 0.11821
CVC4 CVC4-master-2016-05-27-cfef263-main default unsat ✅ 0.23945 0.46106
MapleSTP MapleSTP default unsat ✅ 0.05090 0.05087
MapleSTP-mt default unsat ✅ 0.05241 0.12391
MathSAT mathsat-5.3.11-linux-x86_64-Main default unsat ✅ 0.12574 0.12673
MinkeyRink Minkeyrink 2016 default unsat ✅ 0.13278 0.18385
Q3B Q3B default unsat ✅ 0.23315 0.23492
STP stp-cms-exp-2016 default unsat ✅ 0.04414 0.04411
stp-cms-mt-2016 default unsat ✅ 0.04865 0.10398
stp-cms-st-2016 default unsat ✅ 0.04300 0.04298
stp-minisat-st-2016 default unsat ✅ 0.13411 0.13032
Yices2 Yices-2.4.2 default unsat ✅ 0.01185 0.01114
Z3 z3-4.4.1 default unsat ✅ 0.07226 0.07359
SMT-COMP 2017 Boolector Boolector+CaDiCaL SMT17 final boolector unsat ✅ 0.11170 0.10993
Boolector SMT17 final boolector unsat ✅ 0.19723 0.19673
CVC4 CVC4-smtcomp2017-main default unsat ✅ 0.25280 0.48741
MathSAT mathsat-5.4.1-linux-x86_64-Main default unsat ✅ 0.12378 0.12441
MinkeyRink MinkeyRink 2017.3a default unsat ✅ 0.09759 0.07855
Q3B Q3B default unsat ✅ 0.20967 0.21051
STP stp_st default unsat ✅ 0.07296 0.06274
stp_mt default unsat ✅ 0.07450 0.06999
Yices2 Yices2-Main default unsat ✅ 0.02283 0.01268
Z3 z3-4.5.0 default unsat ✅ 0.09887 0.09543
SMT-COMP 2018 Boolector Boolector_default unsat ✅ 0.09745 0.09741
CVC4 master-2018-06-10-b19c840-competition-default_default unsat ✅ 0.23433 0.23438
MathSAT mathsat-5.5.2-linux-x86_64-Main_default unsat ✅ 0.14136 0.14243
MinkeyRink Minkeyrink MT_mt unsat ✅ 0.05178 0.07666
Minkeyrink ST_st unsat ✅ 0.04948 0.04972
STP STP-CMS-st-2018_default-no-stderr unsat ✅ 0.04749 0.04773
STP-CMS-mt-2018_multicore-no-stderr unsat ✅ 0.04960 0.07551
STP-Riss-st-2018_riss-no-stderr unsat ✅ 0.17072 0.17072
Yices2 Yices 2.6.0_default unsat ✅ 0.01651 0.01644
Z3 z3-4.7.1_default unsat ✅ 0.08465 0.08458