Benchmark

non-incremental/QF_BV/20230221-oisc-gurtner/SRL-SAFE-1024-1024.smt2

Publications: "A Formally Verified Reduction of the RV32I ISA", Sonja Gurtner
(https://epub.jku.at/obvulihs/content/titleinfo/8237703)

The benchmarks come from the master thesis from Sonja Gurtner "A Formally Verified Reduction of the
RV32I ISA" about translating RISC-V instructions using only memory operations, jump, and sub. The
translation was done by Rosette, a tool to translate constraints from a Racket-like language to the
SMT-LIB.

There are two parameters in the translation:

- the bitwidth we are considering

- the upper bound on the number of loop iterations (for
correctness, it must be larger than the bitwidth)

One limitation of the work is that the translation was verified one replacement at a time. We verify
that addition (RISC-V instruction add) can be replaced by two subtraction (RISC-V instruction sub),
but subsequently use the usual addition. Thanks to this, verification scales up to large
bitwidth. Otherwise, the verification of such nested instructions is very challenging.


Naming convention: <instruction_to_replace>[-nested]-<bitwidth>-<upper_bound>[-<counterexample-cause>.smt2
Benchmark
Size1775272
Compressed Size270392
License Creative Commons Attribution 4.0 International (CC-BY-4.0)
Categoryindustrial
First Occurrence2023-07-06
Generated BySonja Gurtner and Mathias Fleury
Generated On2023-02-19 00:00:00
GeneratorRosette
Dolmen OK1
strict Dolmen OK1
check-sat calls1
Query 1
Status unsat
Inferred Status None
Size 1775263
Compressed Size270400
Max. Term Depth3
Asserts 4
Declared Functions0
Declared Constants139
Declared Sorts 0
Defined Functions0
Defined Recursive Functions 0
Defined Sorts0
Constants34155
Declared Datatypes0

Symbols

Bool18352 ite5886 not4115 or5148
and5321 =3741 BitVec15803 bvand1
bvor11 bvneg1040 bvadd3089 bvsmod2
bvult11 bvule4 bvslt1 bvsle11
bvshl4092 bvlshr1037

Evaluations

Evaluation Rating Solver Variant Result Wallclock CPU Time
SMT-COMP 2023 1.00 (0/6) Bitwuzla Bitwuzla-fixed_default unknown ❌ 1200.06000 1199.83000
cvc5 cvc5-default-2023-05-16-ea045f305_sq unknown ❌ 573.77400 573.61300
STP STP 2022.4_default unknown ❌ 1200.11000 1199.92000
STP 2022.4_default unknown ❌ 1200.05000 1199.91000
UltimateEliminator UltimateIntBlastingWrapper+SMTInterpol_default unknown ❌ 4.46318 11.37920
Yices2 Yices 2 for SMTCOMP 2023_default unknown ❌ 1200.06000 1199.96000
Z3-Owl z3-Owl-Final_default unknown ❌ 1200.02000 1199.65000
z3-Owl-Final_default unknown ❌ 1200.02000 1199.72000
SMT-COMP 2025 1.00 (0/9) Bitwuzla Bitwuzla unknown ❌ 1201.49169 1201.14133
Bitwuzla-MachBV-base unknown ❌ 1201.67722 1201.38114
Bitwuzla-MachBV Bitwuzla-MachBV unknown ❌ 1201.44514 1201.17863
BVDecide bv_decide unknown ❌ 1201.34886 1200.99508
bv_decide-nokernel unknown ❌ 1201.38790 1201.00268
cvc5 cvc5 unknown ❌ 157.74580 159.67596
SMTInterpol SMTInterpol unknown ❌ 1201.89172 3010.27263
Yices2 Yices2 unknown ❌ 1201.60613 1201.23247
Z3alpha Z3-alpha unknown ❌ 70.55227 278.23366
Z3 Z3-alpha-base unknown ❌ 1201.75669 1201.41168
Z3-Owl-base unknown ❌ 1201.62744 1201.36963
z3siri-base unknown ❌ 1201.77639 1201.50463
Z3-Owl Z3-Owl unknown ❌ 1201.75408 1201.45357