Benchmark

non-incremental/QF_BV/20230221-oisc-gurtner/SRAI-SAFE-512-1024.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
Size2803605
Compressed Size430864
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 2803596
Compressed Size430869
Max. Term Depth3
Asserts 4
Declared Functions0
Declared Constants140
Declared Sorts 0
Defined Functions0
Defined Recursive Functions 0
Defined Sorts0
Constants55515
Declared Datatypes0

Symbols

Bool34673 ite7795 not8206 or10260
and10429 =5751 BitVec20842 bvand1
bvor9 bvneg1039 bvadd5132 bvsmod2
bvult10 bvule4 bvslt1 bvsle12
bvshl5116 bvlshr1035 bvashr1

Evaluations

Evaluation Rating Solver Variant Result Wallclock CPU Time
SMT-COMP 2024 1.00 (0/6) Bitwuzla Bitwuzla unknown ❌ 1201.55933 1201.15984
cvc5 cvc5 unknown ❌ 193.47242 195.02531
SMTInterpol SMTInterpol unknown ❌ 1202.72416 1893.66490
STP STP unknown ❌ 1201.36620 1200.65480
Yices2 Yices2 unknown ❌ 1201.45270 1201.33058
Z3alpha Z3-alpha unknown ❌ 393.24078 392.92443
SMT-COMP 2025 1.00 (0/9) Bitwuzla Bitwuzla unknown ❌ 1201.48311 1201.21225
Bitwuzla-MachBV-base unknown ❌ 1201.65598 1201.28499
Bitwuzla-MachBV Bitwuzla-MachBV unknown ❌ 1201.49162 1201.25297
BVDecide bv_decide unknown ❌ 1201.39572 1201.04416
bv_decide-nokernel unknown ❌ 1201.38142 1201.00961
cvc5 cvc5 unknown ❌ 159.28657 161.19149
SMTInterpol SMTInterpol unknown ❌ 1201.74761 3764.20015
Yices2 Yices2 unknown ❌ 1201.52563 1201.26539
Z3alpha Z3-alpha unknown ❌ 129.48569 510.18368
Z3 Z3-alpha-base unknown ❌ 1201.40299 1201.12359
Z3-Owl-base unknown ❌ 1201.35850 1201.02664
z3siri-base unknown ❌ 1201.40283 1201.13544
Z3-Owl Z3-Owl unknown ❌ 1201.75284 1201.01997