Benchmark

non-incremental/FP/20200911-Pine/1599122164194350000.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:
   u' := u + 0.01 * v
   v' := v + 0.01 * (-0.5 * v - 9.81 * u)

 Input ranges:
   u in [0.0,0.0]
   v in [2.0,3.0]

 Invariant:
   -1.0*u + 0.21*v + 0.89*u^2 + -0.11*u*v + 0.06*v^2 <= 1.26
 and
   u in [-0.6,1.9]
   v in [-6.3,3.0]

 Query: Loop and Invariant and not Invariant'

Benchmark
Size	4062
Compressed Size	1233
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	4054
Compressed Size	1242
Max. Term Depth	31
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	27	fp	24
fp.add	10	fp.sub	1	fp.mul	20	fp.neg	1
fp.leq	10	fp.eq	2	roundNearestTiesToEven	31

Evaluations

Evaluation	Rating	Solver	Variant	Result	Wallclock	CPU Time
SMT-COMP 2022	0.25 (3/4)	Bitwuzla	Bitwuzla-wrapped_default	sat ✅	23.23250	23.23090
		cvc5	cvc5_default	sat ✅	13.08950	13.08230
			cvc5-default-2022-07-02-b15e116-wrapped_sq	sat ✅	14.42860	14.42450
		UltimateEliminator	UltimateEliminator+MathSAT-5.6.7-wrapped_default	unknown ❌	6.82346	4.27836
		Z3	z3-4.8.17_default	sat ✅	331.42200	331.40700
SMT-COMP 2024		Bitwuzla	Bitwuzla	sat ✅	35.06849	34.95339
		cvc5	cvc5	sat ✅	11.15102	11.05095