Benchmark

non-incremental/QF_BV/20230221-oisc-gurtner/SRL-SAFE-512-512.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
Size911912
Compressed Size139915
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 911903
Compressed Size139920
Max. Term Depth3
Asserts 4
Declared Functions0
Declared Constants139
Declared Sorts 0
Defined Functions0
Defined Recursive Functions 0
Defined Sorts0
Constants17771
Declared Datatypes0

Symbols

Bool9648 ite3326 not2067 or2588
and2761 =2205 BitVec8123 bvand1
bvor11 bvneg528 bvadd1553 bvsmod2
bvult11 bvule4 bvslt1 bvsle11
bvshl2044 bvlshr525

Evaluations

Evaluation Rating Solver Variant Result Wallclock CPU Time
SMT-COMP 2024 1.00 (0/6) Bitwuzla Bitwuzla unknown ❌ 1201.36361 1201.22063
cvc5 cvc5 unknown ❌ 846.56442 848.13775
SMTInterpol SMTInterpol unknown ❌ 1202.74431 1974.34578
STP STP unknown ❌ 1201.32478 1200.55831
Yices2 Yices2 unknown ❌ 1201.30506 1201.17923
Z3alpha Z3-alpha unknown ❌ 325.08611 324.96277
SMT-COMP 2025 1.00 (0/9) Bitwuzla Bitwuzla unknown ❌ 1201.37559 1201.02057
Bitwuzla-MachBV-base unknown ❌ 1201.35010 1201.06848
Bitwuzla-MachBV Bitwuzla-MachBV unknown ❌ 1201.32576 1201.09323
BVDecide bv_decide unknown ❌ 1201.39080 1201.06113
bv_decide-nokernel unknown ❌ 1201.37989 1201.05910
cvc5 cvc5 unknown ❌ 1203.79147 1202.71671
SMTInterpol SMTInterpol unknown ❌ 1201.85477 3703.90153
Yices2 Yices2 unknown ❌ 1201.35781 1201.03507
Z3alpha Z3-alpha unknown ❌ 52.06867 206.35568
Z3 Z3-alpha-base unknown ❌ 1201.47847 1201.13175
Z3-Owl-base unknown ❌ 1201.37824 1201.05180
z3siri-base unknown ❌ 1201.42205 1201.12405
Z3-Owl Z3-Owl unknown ❌ 1201.75027 1201.18936