Enum halo2_proofs::dev::VerifyFailure

source · [−]

pub enum VerifyFailure {
    CellNotAssigned {
        gate: Gate,
        region: Region,
        gate_offset: usize,
        column: Column<Any>,
        offset: isize,
    },
    InstanceCellNotAssigned {
        gate: Gate,
        region: Region,
        gate_offset: usize,
        column: Column<Instance>,
        row: usize,
    },
    ConstraintNotSatisfied {
        constraint: Constraint,
        location: FailureLocation,
        cell_values: Vec<(VirtualCell, String)>,
    },
    ConstraintPoisoned {
        constraint: Constraint,
    },
    Lookup {
        lookup_index: usize,
        location: FailureLocation,
    },
    Permutation {
        column: Column,
        location: FailureLocation,
    },
}

Expand description

The reasons why a particular circuit is not satisfied.

Variants

`CellNotAssigned`

Fields

gate: Gate

The index of the active gate.

region: Region

The region in which this cell should be assigned.

gate_offset: usize

The offset (relative to the start of the region) at which the active gate queries this cell.

column: Column<Any>

The column in which this cell should be assigned.

offset: isize

The offset (relative to the start of the region) at which this cell should be assigned. This may be negative (for example, if a selector enables a gate at offset 0, but the gate uses Rotation::prev()).

A cell used in an active gate was not assigned to.

`InstanceCellNotAssigned`

Fields

gate: Gate

The index of the active gate.

region: Region

The region in which this gate was activated.

gate_offset: usize

The offset (relative to the start of the region) at which the active gate queries this cell.

column: Column<Instance>

The column in which this cell should be assigned.

row: usize

The absolute row at which this cell should be assigned.

An instance cell used in an active gate was not assigned to.

`ConstraintNotSatisfied`

Fields

constraint: Constraint

The polynomial constraint that is not satisfied.

location: FailureLocation

The location at which this constraint is not satisfied.

FailureLocation::OutsideRegion is usually caused by a constraint that does not contain a selector, and as a result is active on every row.

cell_values: Vec<(VirtualCell, String)>

The values of the virtual cells used by this constraint.

A constraint was not satisfied for a particular row.

`ConstraintPoisoned`

Fields

constraint: Constraint

The polynomial constraint that is not satisfied.

A constraint was active on an unusable row, and is likely missing a selector.

`Lookup`

Fields

lookup_index: usize

The index of the lookup that is not satisfied. These indices are assigned in the order in which ConstraintSystem::lookup is called during Circuit::configure.

location: FailureLocation

The location at which the lookup is not satisfied.

FailureLocation::InRegion is most common, and may be due to the intentional use of a lookup (if its inputs are conditional on a complex selector), or an unintentional lookup constraint that overlaps the region (indicating that the lookup’s inputs should be made conditional).

FailureLocation::OutsideRegion is uncommon, and could mean that:

The input expressions do not correctly constrain a default value that exists in the table when the lookup is not being used.
The input expressions use a column queried at a non-zero Rotation, and the lookup is active on a row adjacent to an unrelated region.

A lookup input did not exist in its corresponding table.

`Permutation`

Fields

column: Column

The column in which this permutation is not satisfied.

location: FailureLocation

The location at which the permutation is not satisfied.

A permutation did not preserve the original value of a cell.

Enum halo2_proofs::dev::VerifyFailure

Variants

CellNotAssigned

Fields

InstanceCellNotAssigned

Fields

ConstraintNotSatisfied

Fields

ConstraintPoisoned

Fields

Lookup

Fields

Permutation

Fields

Trait Implementations

impl Debug for VerifyFailure

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl Display for VerifyFailure

fn fmt(&self, f: &mut Formatter<'_>) -> Result

impl PartialEq<VerifyFailure> for VerifyFailure

fn eq(&self, other: &VerifyFailure) -> bool

const fn ne(&self, other: &Rhs) -> bool

impl StructuralPartialEq for VerifyFailure

Auto Trait Implementations

impl RefUnwindSafe for VerifyFailure

impl Send for VerifyFailure

impl Sync for VerifyFailure

impl Unpin for VerifyFailure

impl UnwindSafe for VerifyFailure

Blanket Implementations

impl<T> Any for Twhere T: 'static + ?Sized,

fn type_id(&self) -> TypeId

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`CellNotAssigned`

`InstanceCellNotAssigned`

`ConstraintNotSatisfied`

`ConstraintPoisoned`

`Lookup`

`Permutation`

impl<T> Any for Twhere
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>where
Self: LowerExp,

fn fmt_lower_hex(self) -> FmtLowerHex<Self>where
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fn fmt_octal(self) -> FmtOctal<Self>where
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fn fmt_pointer(self) -> FmtPointer<Self>where
Self: Pointer,

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Self: UpperExp,

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