Benchmark

non-incremental/FP/20200911-Pine/1599121684197507000.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:
   -0.03*x + -0.11*y + 0.33*x^2 + 0.72*x*y + 1.0*y^2 <= 0.01
 and
   x in [-0.2,0.1]
   y in [-0.1,0.2]

 Query: Loop and Invariant and not Invariant'

Benchmark
Size	4219
Compressed Size	1202
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	None
Size	4211
Compressed Size	1226
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