Benchmark

non-incremental/FP/20200911-Pine/1599121684386621000.smt2

These benchmarks were generated while developing the tool Pine [1], which uses
CVC4/Z3 to check inductiveness of invariants. The work is described in [2].

[1] https://github.com/izycheva/pine
[2] A.Izycheva, E.Darulova, H.Seidl, SAS'20, "Counterexample- and Simulation-Guided Floating-Point Loop Invariant Synthesis"

 Loop:
   x' := x + 0.01 * (-2*x - 3*y + x*x)
   y' := y + 0.01 * (x + y)

 Input ranges:
   x in [0.0,0.1]
   y in [0.0,0.1]

 Invariant:
   -0.01*x + -0.1*y + 0.57*x^2 + 1.0*x*y + 0.9*y^2 <= 0.02
 and
   x in [-0.4,0.2]
   y in [-0.2,0.4]

 Query: Loop and Invariant and not Invariant'

Benchmark
Size	4221
Compressed Size	1212
License	Creative Commons Attribution 4.0 International (CC-BY-4.0)
Category	industrial
First Occurrence	2021-07-18
Generated By	Anastasiia Izycheva, Eva Darulova
Generated On	2020-09-11 00:00:00
Generator	Pine (using Z3 Python API)
Dolmen OK	1
strict Dolmen OK	1
check-sat calls	1

Query 1

Status	unknown
Inferred Status	sat
Size	4213
Compressed Size	1239
Max. Term Depth	33
Asserts	1
Declared Functions	0
Declared Constants	4
Declared Sorts	0
Defined Functions	0
Defined Recursive Functions	0
Defined Sorts	0
Constants	0
Declared Datatypes	0

Symbols

not	1	and	6	let	29	fp	24
fp.add	12	fp.sub	1	fp.mul	21	fp.neg	1
fp.leq	10	fp.eq	2	roundNearestTiesToEven	34

Evaluations

Evaluation	Rating	Solver	Variant	Result	Wallclock	CPU Time
SMT-COMP 2023	0.33 (2/3)	Bitwuzla	Bitwuzla-fixed_default	sat ✅	683.61200	683.46600
		cvc5	cvc5-default-2023-05-16-ea045f305_sq	sat ✅	682.57800	679.44500
		UltimateEliminator	UltimateEliminator+MathSAT-5.6.9_default	unknown ❌	6.81672	4.30287
SMT-COMP 2024		Bitwuzla	Bitwuzla	sat ✅	466.35804	466.05670
		cvc5	cvc5	sat ✅	1148.72511	1148.03967
SMT-COMP 2025	0.33 (2/3)	Bitwuzla	Bitwuzla	sat ✅	274.32523	274.13993
		cvc5	cvc5	sat ✅	943.86947	943.62817
		UltimateEliminator	UltimateEliminator+MathSAT	unknown ❌	1201.77357	1205.45697