Module `Pulselib.PulsePathCondition`

module F = Stdlib.Format

module AbstractValue = PulseAbstractValue

module ValueHistory = PulseValueHistory

type t

val true_ : t
val pp : F.formatter -> t -> unit

Building arithmetic constraints

val and_nonnegative : AbstractValue.t -> t -> t: and_nonnegative v phi is phi ∧ v≥0

val and_positive : AbstractValue.t -> t -> t: and_positive v phi is phi ∧ v>0

val and_eq_int : AbstractValue.t -> IR.IntLit.t -> t -> t: and_eq_int v i phi is phi ∧ v=i

val simplify : keep:AbstractValue.Set.t -> t -> t: simplify ~keep phi attempts to get rid of as many variables in fv phi but not in keep as possible

val and_callee : (AbstractValue.t * ValueHistory.t) AbstractValue.Map.t -> t -> callee:t -> (AbstractValue.t * ValueHistory.t) AbstractValue.Map.t * t

Operations

type operand = | LiteralOperand of IR.IntLit.t | AbstractValueOperand of AbstractValue.t

val eval_binop : AbstractValue.t -> IR.Binop.t -> operand -> operand -> t -> t
val eval_unop : AbstractValue.t -> IR.Unop.t -> AbstractValue.t -> t -> t
val prune_binop : negated:bool -> IR.Binop.t -> operand -> operand -> t -> t

Queries

val is_known_zero : t -> AbstractValue.t -> bool: is_known_zero phi t returns true if phi |- t = 0, false if we don't know for sure

val is_unsat_cheap : t -> bool: whether the state contains a contradiction, call this as often as you want

val is_unsat_expensive : t -> t * bool: whether the state contains a contradiction, only call this when you absolutely have to

val as_int : t -> AbstractValue.t -> int option: as_int phi t returns an integer x such that phi |- t = x, if known for sure; see also is_known_zero

val has_no_assumptions : t -> bool: whether the current path is independent of any calling context