package goblint

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Static analysis framework for C

Install 

dune-project
 Dependency

goblint.in.tum.de Readme Changelog Edit opam file Versions (9)

Authors

  1. V
    Vesal Vojdani
  2. K
    Kalmer Apinis
  3. R
    Ralf Vogler
  4. M
    Michael Schwarz
  5. J
    Julian Erhard
  6. S
    Simmo Saan

Maintainers

  1. M
    Michael Schwarz <michael.schwarz93@gmail.com>
  2. S
    Simmo Saan <simmo.saan@gmail.com>
  3. R
    Ralf Vogler <ralf.vogler@gmail.com>

Sources

goblint-1.1.1.tbz
sha256=999272bfbd3b9b96fcd58987b237ac6e9fa6d92ef935cc89f1ea2b4205185141
sha512=f3bf6ab71cf8c258d3290da4bf9f6fe42d7c671822e0efeb0fc50afdff078ab15e352237e5c1db31c5aa3a9d430691268ed2e5e00da10f2615835f672f91683d

doc/goblint.lib/IntDomain/Reverse/index.html

Module IntDomain.Reverse

Reverses bot, top, leq, join, meet

Parameters

Signature

include B with type t = Base.t with type int_t = Base.int_t
include Lattice.S with type t = Base.t
include Lattice.PO with type t = Base.t
include Printable.S with type t = Base.t
type t = Base.t
val equal : t -> t -> bool
val hash : t -> int
val compare : t -> t -> int
val show : t -> string
val pretty : unit -> t -> Pretty.doc
val printXml : 'a BatInnerIO.output -> t -> unit
val name : unit -> string
val to_yojson : t -> Printable.json
val invariant : Invariant.context -> t -> Invariant.t
val tag : t -> int

Unique ID, given by HConsed, for context identification in witness

val arbitrary : unit -> t QCheck.arbitrary
val relift : t -> t
val leq : t -> t -> bool
val join : t -> t -> t
val meet : t -> t -> t
val widen : t -> t -> t

widen x y assumes leq x y. Solvers guarantee this by calling widen old (join old new).

val narrow : t -> t -> t
val pretty_diff : unit -> (t * t) -> Pretty.doc

If leq x y = false, then pretty_diff () (x, y) should explain why.

val bot : unit -> t
val is_bot : t -> bool
val top : unit -> t
val is_top : t -> bool
type int_t = Base.int_t

Accessing values of the ADT

val bot_of : Cil.ikind -> t
val top_of : Cil.ikind -> t
val to_int : t -> int_t option

Return a single integer value if the value is a known constant, otherwise * don't return anything.

val is_int : t -> bool

Checks if the element is a definite integer value. If this function * returns true, the above to_int should return a real value.

val equal_to : int_t -> t -> [ `Eq | `Neq | `Top ]
val to_bool : t -> bool option

Give a boolean interpretation of an abstract value if possible, otherwise * don't return anything.

val is_bool : t -> bool

Checks if the element is a definite boolean value. If this function * returns true, the above to_bool should return a real value.

val to_excl_list : t -> int_t list option

Gives a list representation of the excluded values if possible.

val of_excl_list : Cil.ikind -> int_t list -> t

Creates an exclusion set from a given list of integers.

val is_excl_list : t -> bool

Checks if the element is an exclusion set.

val to_incl_list : t -> int_t list option

Gives a list representation of the included values if possible.

val maximal : t -> int_t option
val minimal : t -> int_t option

Cast

val cast_to : ?torg:Cil.typ -> Cil.ikind -> t -> t

Cast from original type torg to integer type Cil.ikind. Currently, torg is only present for actual casts. The function is also called to handle overflows/wrap around after operations. In these cases (where the type stays the same) torg is None.

include Arith with type t := t
val neg : t -> t

Negating an integer value: -x

val add : t -> t -> t

Addition: x + y

val sub : t -> t -> t

Subtraction: x - y

val mul : t -> t -> t

Multiplication: x * y

val div : t -> t -> t

Division: x / y

val rem : t -> t -> t

Integer remainder: x % y

Comparison operators

val lt : t -> t -> t

Less than: x < y

val gt : t -> t -> t

Greater than: x > y

val le : t -> t -> t

Less than or equal: x <= y

val ge : t -> t -> t

Greater than or equal: x >= y

val eq : t -> t -> t

Equal to: x == y

val ne : t -> t -> t

Not equal to: x != y

Bit operators

val bitnot : t -> t

Bitwise not (one's complement): ~x

val bitand : t -> t -> t

Bitwise and: x & y

val bitor : t -> t -> t

Bitwise or: x | y

val bitxor : t -> t -> t

Bitwise exclusive or: x ^ y

val shift_left : t -> t -> t

Shifting bits left: x << y

val shift_right : t -> t -> t

Shifting bits right: x >> y

Logical operators

val lognot : t -> t

Logical not: !x

val logand : t -> t -> t

Logical and: x && y

val logor : t -> t -> t

Logical or: x || y

val starting : Cil.ikind -> int_t -> t
val ending : Cil.ikind -> int_t -> t
val of_int : int_t -> t

Transform an integer literal to your internal domain representation.

val of_bool : bool -> t

Transform a known boolean value to the default internal representation. It * should follow C: of_bool true = of_int 1 and of_bool false = of_int 0.

val of_interval : Cil.ikind -> (int_t * int_t) -> t
val of_congruence : Cil.ikind -> (int_t * int_t) -> t