Benchmark

non-incremental/FP/20200911-Pine/1599121866557308000.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 + rndx10
   x2' := -0.01 * x1 + 0.99 * x2 + rndx20

 Input ranges:
   x1 in [0.0,1.0]
   x2 in [0.0,1.0]
   rndx10 in [-6.1e-08,6.1e-08]
   rndx20 in [-1.3e-07,1.3e-07]

 Invariant:
   -1.0*x1 + -0.56*x2 + 0.91*x1^2 + 0.49*x1*x2 + 0.94*x2^2 <= 0.88
 and
   x1 in [-0.6,1.7]
   x2 in [-1.0,1.0]

 Query: Loop and Invariant and not Invariant'

Benchmark
Size	4583
Compressed Size	1337
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	4575
Compressed Size	1365
Max. Term Depth	36
Asserts	1
Declared Functions	0
Declared Constants	6
Declared Sorts	0
Defined Functions	0
Defined Recursive Functions	0
Defined Sorts	0
Constants	0
Declared Datatypes	0

Symbols

not	1	and	6	let	32	fp	27
fp.add	12	fp.mul	19	fp.neg	1	fp.leq	14
fp.eq	2	roundNearestTiesToEven	31