Benchmark

non-incremental/FP/20200911-Pine/1599121862636658000.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:
   x1' := x1 + 0.01 * x2
   x2' := -0.01 * x1 + 0.99 * x2

 Input ranges:
   x1 in [0.0,1.0]
   x2 in [0.0,1.0]

 Invariant:
   -1.0*x1 + -0.36*x2 + 0.87*x1^2 + 0.26*x1*x2 + 0.86*x2^2 <= 0.68
 and
   x1 in [-0.5,1.5]
   x2 in [-0.9,1.0]

 Query: Loop and Invariant and not Invariant'

Benchmark
Size	3959
Compressed Size	1188
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	3951
Compressed Size	1227
Max. Term Depth	30
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	26	fp	23
fp.add	10	fp.mul	19	fp.neg	1	fp.leq	10
fp.eq	2	roundNearestTiesToEven	29

Evaluations

Evaluation	Rating	Solver	Variant	Result	Wallclock	CPU Time
SMT-COMP 2023	0.33 (2/3)	Bitwuzla	Bitwuzla-fixed_default	sat ✅	92.62030	92.61140
		cvc5	cvc5-default-2023-05-16-ea045f305_sq	sat ✅	748.99300	742.45000
		UltimateEliminator	UltimateEliminator+MathSAT-5.6.9_default	unknown ❌	6.78141	4.33416
SMT-COMP 2025	0.33 (2/3)	Bitwuzla	Bitwuzla	sat ✅	11.56998	11.44239
		cvc5	cvc5	sat ✅	108.35179	108.20660
		UltimateEliminator	UltimateEliminator+MathSAT	unknown ❌	1201.74425	1205.57078