java.lang.Object
- com.microsoft.z3.Z3Object
- - com.microsoft.z3.AST
  - - com.microsoft.z3.Expr

All Implemented Interfaces:

Comparable<AST>

Direct Known Subclasses:

ArithExpr, ArrayExpr, BitVecExpr, BoolExpr, DatatypeExpr, FiniteDomainExpr, FPExpr, FPRMExpr, ReExpr, SeqExpr
```
public class Expr
extends AST
```
Expressions are terms.

Constructor Summary

Constructors
Modifier Constructor Description

protected Expr(Context ctx, long obj)
Constructor for Expr

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Expr[]`	`getArgs()`	The arguments of the expression.
`Z3_lbool`	`getBoolValue()`	Indicates whether the expression is the true or false expression or something else (Z3_L_UNDEF).
`FuncDecl`	`getFuncDecl()`	The function declaration of the function that is applied in this expression.
`int`	`getIndex()`	The de-Bruijn index of a bound variable.
`int`	`getNumArgs()`	The number of arguments of the expression.
`Sort`	`getSort()`	The Sort of the term.
`String`	`getString()`	Retrieve string corresponding to string constant.
`boolean`	`isAdd()`	Indicates whether the term is addition (binary)
`boolean`	`isAlgebraicNumber()`	Indicates whether the term is an algebraic number
`boolean`	`isAnd()`	Indicates whether the term is an n-ary conjunction
`boolean`	`isArithmeticNumeral()`	Indicates whether the term is an arithmetic numeral.
`boolean`	`isArray()`	Indicates whether the term is of an array sort.
`boolean`	`isArrayMap()`	Indicates whether the term is an array map.
`boolean`	`isAsArray()`	Indicates whether the term is an as-array term.
`boolean`	`isBool()`	Indicates whether the term has Boolean sort.
`boolean`	`isBV()`	Indicates whether the terms is of bit-vector sort.
`boolean`	`isBVAdd()`	Indicates whether the term is a bit-vector addition (binary)
`boolean`	`isBVAND()`	Indicates whether the term is a bit-wise AND
`boolean`	`isBVBitOne()`	Indicates whether the term is a one-bit bit-vector with value one
`boolean`	`isBVBitZero()`	Indicates whether the term is a one-bit bit-vector with value zero
`boolean`	`isBVCarry()`	Indicates whether the term is a bit-vector carry Remarks: Compute the * carry bit in a full-adder.
`boolean`	`isBVComp()`	Indicates whether the term is a bit-vector comparison
`boolean`	`isBVConcat()`	Indicates whether the term is a bit-vector concatenation (binary)
`boolean`	`isBVExtract()`	Indicates whether the term is a bit-vector extraction
`boolean`	`isBVMul()`	Indicates whether the term is a bit-vector multiplication (binary)
`boolean`	`isBVNAND()`	Indicates whether the term is a bit-wise NAND
`boolean`	`isBVNOR()`	Indicates whether the term is a bit-wise NOR
`boolean`	`isBVNOT()`	Indicates whether the term is a bit-wise NOT
`boolean`	`isBVNumeral()`	Indicates whether the term is a bit-vector numeral
`boolean`	`isBVOR()`	Indicates whether the term is a bit-wise OR
`boolean`	`isBVReduceAND()`	Indicates whether the term is a bit-vector reduce AND
`boolean`	`isBVReduceOR()`	Indicates whether the term is a bit-vector reduce OR
`boolean`	`isBVRepeat()`	Indicates whether the term is a bit-vector repetition
`boolean`	`isBVRotateLeft()`	Indicates whether the term is a bit-vector rotate left
`boolean`	`isBVRotateLeftExtended()`	Indicates whether the term is a bit-vector rotate left (extended) Remarks: Similar to Z3_OP_ROTATE_LEFT, but it is a binary operator instead of a parametric one.
`boolean`	`isBVRotateRight()`	Indicates whether the term is a bit-vector rotate right
`boolean`	`isBVRotateRightExtended()`	Indicates whether the term is a bit-vector rotate right (extended) Remarks: Similar to Z3_OP_ROTATE_RIGHT, but it is a binary operator instead of a parametric one.
`boolean`	`isBVSDiv()`	Indicates whether the term is a bit-vector signed division (binary)
`boolean`	`isBVSGE()`	Indicates whether the term is a signed bit-vector greater-than-or-equal
`boolean`	`isBVSGT()`	Indicates whether the term is a signed bit-vector greater-than
`boolean`	`isBVShiftLeft()`	Indicates whether the term is a bit-vector shift left
`boolean`	`isBVShiftRightArithmetic()`	Indicates whether the term is a bit-vector arithmetic shift left
`boolean`	`isBVShiftRightLogical()`	Indicates whether the term is a bit-vector logical shift right
`boolean`	`isBVSignExtension()`	Indicates whether the term is a bit-vector sign extension
`boolean`	`isBVSLE()`	Indicates whether the term is a signed bit-vector less-than-or-equal
`boolean`	`isBVSLT()`	Indicates whether the term is a signed bit-vector less-than
`boolean`	`isBVSMod()`	Indicates whether the term is a bit-vector signed modulus
`boolean`	`isBVSRem()`	Indicates whether the term is a bit-vector signed remainder (binary)
`boolean`	`isBVSub()`	Indicates whether the term is a bit-vector subtraction (binary)
`boolean`	`isBVToInt()`	Indicates whether the term is a coercion from bit-vector to integer Remarks: This function is not supported by the decision procedures.
`boolean`	`isBVUDiv()`	Indicates whether the term is a bit-vector unsigned division (binary)
`boolean`	`isBVUGE()`	Indicates whether the term is an unsigned bit-vector greater-than-or-equal
`boolean`	`isBVUGT()`	Indicates whether the term is an unsigned bit-vector greater-than
`boolean`	`isBVULE()`	Indicates whether the term is an unsigned bit-vector less-than-or-equal
`boolean`	`isBVULT()`	Indicates whether the term is an unsigned bit-vector less-than
`boolean`	`isBVUMinus()`	Indicates whether the term is a bit-vector unary minus
`boolean`	`isBVURem()`	Indicates whether the term is a bit-vector unsigned remainder (binary)
`boolean`	`isBVXNOR()`	Indicates whether the term is a bit-wise XNOR
`boolean`	`isBVXOR()`	Indicates whether the term is a bit-wise XOR
`boolean`	`isBVXOR3()`	Indicates whether the term is a bit-vector ternary XOR Remarks: The * meaning is given by the equivalence (xor3 l1 l2 l3) <=> (xor (xor * l1 l2) l3)
`boolean`	`isBVZeroExtension()`	Indicates whether the term is a bit-vector zero extension
`boolean`	`isConcat()`	Check whether expression is a concatenation
`boolean`	`isConst()`	Indicates whether the term represents a constant.
`boolean`	`isConstantArray()`	Indicates whether the term is a constant array.
`boolean`	`isDefaultArray()`	Indicates whether the term is a default array.
`boolean`	`isDistinct()`	Indicates whether the term is an n-ary distinct predicate (every argument is mutually distinct).
`boolean`	`isDiv()`	Indicates whether the term is division (binary)
`boolean`	`isEmptyRelation()`	Indicates whether the term is an empty relation
`boolean`	`isEq()`	Indicates whether the term is an equality predicate.
`boolean`	`isFalse()`	Indicates whether the term is the constant false.
`boolean`	`isFiniteDomain()`	Indicates whether the term is of an array sort.
`boolean`	`isFiniteDomainLT()`	Indicates whether the term is a less than predicate over a finite domain.
`boolean`	`isGE()`	Indicates whether the term is a greater-than-or-equal
`boolean`	`isGT()`	Indicates whether the term is a greater-than
`boolean`	`isIDiv()`	Indicates whether the term is integer division (binary)
`boolean`	`isIff()`	Indicates whether the term is an if-and-only-if (Boolean equivalence, binary)
`boolean`	`isImplies()`	Indicates whether the term is an implication
`boolean`	`isInt()`	Indicates whether the term is of integer sort.
`boolean`	`isIntNum()`	Indicates whether the term is an integer numeral.
`boolean`	`isIntToBV()`	Indicates whether the term is a coercion from integer to bit-vector Remarks: This function is not supported by the decision procedures.
`boolean`	`isIntToReal()`	Indicates whether the term is a coercion of integer to real (unary)
`boolean`	`isIsEmptyRelation()`	Indicates whether the term is a test for the emptiness of a relation
`boolean`	`isITE()`	Indicates whether the term is a ternary if-then-else term
`boolean`	`isLabel()`	Indicates whether the term is a label (used by the Boogie Verification condition generator).
`boolean`	`isLabelLit()`	Indicates whether the term is a label literal (used by the Boogie Verification condition generator).
`boolean`	`isLE()`	Indicates whether the term is a less-than-or-equal
`boolean`	`isLT()`	Indicates whether the term is a less-than
`boolean`	`isModulus()`	Indicates whether the term is modulus (binary)
`boolean`	`isMul()`	Indicates whether the term is multiplication (binary)
`boolean`	`isNot()`	Indicates whether the term is a negation
`boolean`	`isNumeral()`	Indicates whether the term is a numeral
`boolean`	`isOEQ()`	Indicates whether the term is a binary equivalence modulo namings.
`boolean`	`isOr()`	Indicates whether the term is an n-ary disjunction
`boolean`	`isProofAndElimination()`	Indicates whether the term is a proof by elimination of AND Remarks: * Given a proof for (and l_1 ...
`boolean`	`isProofApplyDef()`	Indicates whether the term is a proof for application of a definition Remarks: [apply-def T1]: F ~ n F is 'equivalent' to n, given that T1 is a proof that n is a name for F.
`boolean`	`isProofAsserted()`	Indicates whether the term is a proof for a fact asserted by the user.
`boolean`	`isProofCommutativity()`	Indicates whether the term is a proof by commutativity Remarks: [comm]: (= (f a b) (f b a)) f is a commutative operator.
`boolean`	`isProofDefAxiom()`	Indicates whether the term is a proof for Tseitin-like axioms Remarks: Proof object used to justify Tseitin's like axioms: (or (not (and p q)) p) (or (not (and p q)) q) (or (not (and p q r)) p) (or (not (and p q r)) q) (or (not (and p q r)) r) ...
`boolean`	`isProofDefIntro()`	Indicates whether the term is a proof for introduction of a name Remarks: Introduces a name for a formula/term.
`boolean`	`isProofDER()`	Indicates whether the term is a proof for destructive equality resolution Remarks: A proof for destructive equality resolution: (iff (forall (x) (or (not (= x t)) P[x])) P[t]) if x does not occur in t.
`boolean`	`isProofDistributivity()`	Indicates whether the term is a distributivity proof object.
`boolean`	`isProofElimUnusedVars()`	Indicates whether the term is a proof for elimination of unused variables.
`boolean`	`isProofGoal()`	Indicates whether the term is a proof for a fact (tagged as goal) asserted by the user.
`boolean`	`isProofHypothesis()`	Indicates whether the term is a hypothesis marker.
`boolean`	`isProofIFFFalse()`	Indicates whether the term is a proof by iff-false Remarks: T1: (not p) [iff-false T1]: (iff p false)
`boolean`	`isProofIFFOEQ()`	Indicates whether the term is a proof iff-oeq Remarks: T1: (iff p q) [iff~ T1]: (~ p q)
`boolean`	`isProofIFFTrue()`	Indicates whether the term is a proof by iff-true Remarks: T1: p [iff-true T1]: (iff p true)
`boolean`	`isProofLemma()`	Indicates whether the term is a proof by lemma Remarks: T1: false [lemma T1]: (or (not l_1) ...
`boolean`	`isProofModusPonens()`	Indicates whether the term is proof via modus ponens Remarks: Given a proof for p and a proof for (implies p q), produces a proof for q.
`boolean`	`isProofModusPonensOEQ()`	Indicates whether the term is a proof by modus ponens for equi-satisfiability.
`boolean`	`isProofMonotonicity()`	Indicates whether the term is a monotonicity proof object.
`boolean`	`isProofNNFNeg()`	Indicates whether the term is a proof for a negative NNF step Remarks: Proof for a (negative) NNF step.
`boolean`	`isProofNNFPos()`	Indicates whether the term is a proof for a positive NNF step Remarks: Proof for a (positive) NNF step.
`boolean`	`isProofOrElimination()`	Indicates whether the term is a proof by elimination of not-or Remarks: * Given a proof for (not (or l_1 ...
`boolean`	`isProofPullQuant()`	Indicates whether the term is a proof for pulling quantifiers out.
`boolean`	`isProofPushQuant()`	Indicates whether the term is a proof for pushing quantifiers in.
`boolean`	`isProofQuantInst()`	Indicates whether the term is a proof for quantifier instantiation Remarks: A proof of (or (not (forall (x) (P x))) (P a))
`boolean`	`isProofQuantIntro()`	Indicates whether the term is a quant-intro proof Remarks: Given a proof * for (~ p q), produces a proof for (~ (forall (x) p) (forall (x) q)).
`boolean`	`isProofReflexivity()`	Indicates whether the term is a proof for (R t t), where R is a reflexive relation.
`boolean`	`isProofRewrite()`	Indicates whether the term is a proof by rewriting Remarks: A proof for a local rewriting step (= t s).
`boolean`	`isProofRewriteStar()`	Indicates whether the term is a proof by rewriting Remarks: A proof for rewriting an expression t into an expression s.
`boolean`	`isProofSkolemize()`	Indicates whether the term is a proof for a Skolemization step Remarks: Proof for: [sk]: (~ (not (forall x (p x y))) (not (p (sk y) y))) [sk]: (~ (exists x (p x y)) (p (sk y) y)) This proof object has no antecedents.
`boolean`	`isProofSymmetry()`	Indicates whether the term is proof by symmetricity of a relation Remarks: Given an symmetric relation R and a proof for (R t s), produces * a proof for (R s t).
`boolean`	`isProofTheoryLemma()`	Indicates whether the term is a proof for theory lemma Remarks: Generic proof for theory lemmas.
`boolean`	`isProofTransitivity()`	Indicates whether the term is a proof by transitivity of a relation Remarks: Given a transitive relation R, and proofs for (R t s) and (R s * u), produces a proof for (R t u).
`boolean`	`isProofTransitivityStar()`	Indicates whether the term is a proof by condensed transitivity of a relation Remarks: Condensed transitivity proof.
`boolean`	`isProofTrue()`	Indicates whether the term is a Proof for the expression 'true'.
`boolean`	`isProofUnitResolution()`	Indicates whether the term is a proof by unit resolution Remarks: T1: * (or l_1 ...
`boolean`	`isRatNum()`	Indicates whether the term is a real numeral.
`boolean`	`isReal()`	Indicates whether the term is of sort real.
`boolean`	`isRealIsInt()`	Indicates whether the term is a check that tests whether a real is integral (unary)
`boolean`	`isRealToInt()`	Indicates whether the term is a coercion of real to integer (unary)
`boolean`	`isRelation()`	Indicates whether the term is of an array sort.
`boolean`	`isRelationalJoin()`	Indicates whether the term is a relational join
`boolean`	`isRelationClone()`	Indicates whether the term is a relational clone (copy) Remarks: Create a fresh copy (clone) of a relation.
`boolean`	`isRelationComplement()`	Indicates whether the term is the complement of a relation
`boolean`	`isRelationFilter()`	Indicates whether the term is a relation filter Remarks: Filter (restrict) a relation with respect to a predicate.
`boolean`	`isRelationNegationFilter()`	Indicates whether the term is an intersection of a relation with the negation of another.
`boolean`	`isRelationProject()`	Indicates whether the term is a projection of columns (provided as numbers in the parameters).
`boolean`	`isRelationRename()`	Indicates whether the term is the renaming of a column in a relation Remarks: The function takes one argument.
`boolean`	`isRelationSelect()`	Indicates whether the term is a relational select Remarks: Check if a record is an element of the relation.
`boolean`	`isRelationStore()`	Indicates whether the term is an relation store Remarks: Insert a record into a relation.
`boolean`	`isRelationUnion()`	Indicates whether the term is the union or convex hull of two relations.
`boolean`	`isRelationWiden()`	Indicates whether the term is the widening of two relations Remarks: The function takes two arguments.
`boolean`	`isRemainder()`	Indicates whether the term is remainder (binary)
`boolean`	`isSelect()`	Indicates whether the term is an array select.
`boolean`	`isSetComplement()`	Indicates whether the term is set complement
`boolean`	`isSetDifference()`	Indicates whether the term is set difference
`boolean`	`isSetIntersect()`	Indicates whether the term is set intersection
`boolean`	`isSetSubset()`	Indicates whether the term is set subset
`boolean`	`isSetUnion()`	Indicates whether the term is set union
`boolean`	`isStore()`	Indicates whether the term is an array store.
`boolean`	`isString()`	Check whether expression is a string constant.
`boolean`	`isSub()`	Indicates whether the term is subtraction (binary)
`boolean`	`isTrue()`	Indicates whether the term is the constant true.
`boolean`	`isUMinus()`	Indicates whether the term is a unary minus
`boolean`	`isWellSorted()`	Indicates whether the term is well-sorted.
`boolean`	`isXor()`	Indicates whether the term is an exclusive or
`Expr`	`simplify()`	Returns a simplified version of the expression
`Expr`	`simplify(Params p)`	Returns a simplified version of the expression A set of parameters
`Expr`	`substitute(Expr[] from, Expr[] to)`	Substitute every occurrence of `from[i]` in the expression with `to[i]`, for `i` smaller than `num_exprs`.
`Expr`	`substitute(Expr from, Expr to)`	Substitute every occurrence of `from` in the expression with `to`.
`Expr`	`substituteVars(Expr[] to)`	Substitute the free variables in the expression with the expressions in `to` Remarks: For every `i` smaller than * `num_exprs`, the variable with de-Bruijn index `i` * is replaced with term `to[i]`.
`String`	`toString()`	Returns a string representation of the expression.
`Expr`	`translate(Context ctx)`	Translates (copies) the term to the Context `ctx`.
`Expr`	`update(Expr[] args)`	Update the arguments of the expression using the arguments `args` The number of new arguments should coincide with the current number of arguments.

Methods inherited from class com.microsoft.z3.AST
compareTo, equals, getASTKind, getId, getSExpr, hashCode, isApp, isExpr, isFuncDecl, isQuantifier, isSort, isVar

Methods inherited from class com.microsoft.z3.Z3Object
arrayLength, arrayToNative

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Expr
```
protected Expr(Context ctx,
               long obj)
```
    Constructor for Expr
    
    Throws:
    
    Z3Exception - on error
- Method Detail
  - simplify
```
public Expr simplify()
```
    Returns a simplified version of the expression
    
    Returns:
    
    Expr
    
    Throws:
    
    Z3Exception - on error
  - simplify
```
public Expr simplify(Params p)
```
    Returns a simplified version of the expression A set of parameters
    
    Parameters:
    
    p - a Params object to configure the simplifier
    
    Returns:
    
    an Expr
    
    Throws:
    
    Z3Exception - on error
    
    See Also:
    
    Context.SimplifyHelp()
  - getFuncDecl
```
public FuncDecl getFuncDecl()
```
    The function declaration of the function that is applied in this expression.
    
    Returns:
    
    a FuncDecl
    
    Throws:
    
    Z3Exception - on error
  - getBoolValue
```
public Z3_lbool getBoolValue()
```
    Indicates whether the expression is the true or false expression or something else (Z3_L_UNDEF).
    
    Returns:
    
    a Z3_lbool
    
    Throws:
    
    Z3Exception - on error
  - getNumArgs
```
public int getNumArgs()
```
    The number of arguments of the expression.
    
    Returns:
    
    an int
    
    Throws:
    
    Z3Exception - on error
  - getArgs
```
public Expr[] getArgs()
```
    The arguments of the expression.
    
    Returns:
    
    an Expr[]
    
    Throws:
    
    Z3Exception - on error
  - update
```
public Expr update(Expr[] args)
```
    Update the arguments of the expression using the arguments args The number of new arguments should coincide with the current number of arguments.
    
    Parameters:
    
    args - arguments
    
    Throws:
    
    Z3Exception - on error
  - substitute
```
public Expr substitute(Expr[] from,
                       Expr[] to)
```
    Substitute every occurrence of from[i] in the expression with to[i], for i smaller than num_exprs. Remarks: The result is the new expression. The arrays from and to must have size num_exprs. For every i smaller than num_exprs, we must have that sort of from[i] must be equal to sort of to[i].
    
    Returns:
    
    an Expr
    
    Throws:
    
    Z3Exception - on error
  - substitute
```
public Expr substitute(Expr from,
                       Expr to)
```
    Substitute every occurrence of from in the expression with to.
    
    Returns:
    
    an Expr
    
    Throws:
    
    Z3Exception - on error
    
    See Also:
    
    substitute(Expr[],Expr[])
  - substituteVars
```
public Expr substituteVars(Expr[] to)
```
    Substitute the free variables in the expression with the expressions in to Remarks: For every i smaller than * num_exprs, the variable with de-Bruijn index i * is replaced with term to[i].
    
    Returns:
    
    an Expr
    
    Throws:
    
    Z3Exception - on error
    
    Z3Exception - on error
  - translate
```
public Expr translate(Context ctx)
```
    Translates (copies) the term to the Context ctx.
    
    Overrides:
    
    translate in class AST
    
    Parameters:
    
    ctx - A context
    
    Returns:
    
    A copy of the term which is associated with ctx
    
    Throws:
    
    Z3Exception - on error
  - toString
```
public String toString()
```
    Returns a string representation of the expression.
    
    Overrides:
    
    toString in class AST
  - isNumeral
```
public boolean isNumeral()
```
    Indicates whether the term is a numeral
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isWellSorted
```
public boolean isWellSorted()
```
    Indicates whether the term is well-sorted.
    
    Returns:
    
    True if the term is well-sorted, false otherwise.
    
    Throws:
    
    Z3Exception - on error
  - getSort
```
public Sort getSort()
```
    The Sort of the term.
    
    Returns:
    
    a sort
    
    Throws:
    
    Z3Exception - on error
  - isConst
```
public boolean isConst()
```
    Indicates whether the term represents a constant.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isIntNum
```
public boolean isIntNum()
```
    Indicates whether the term is an integer numeral.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRatNum
```
public boolean isRatNum()
```
    Indicates whether the term is a real numeral.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isAlgebraicNumber
```
public boolean isAlgebraicNumber()
```
    Indicates whether the term is an algebraic number
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBool
```
public boolean isBool()
```
    Indicates whether the term has Boolean sort.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isTrue
```
public boolean isTrue()
```
    Indicates whether the term is the constant true.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isFalse
```
public boolean isFalse()
```
    Indicates whether the term is the constant false.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isEq
```
public boolean isEq()
```
    Indicates whether the term is an equality predicate.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isDistinct
```
public boolean isDistinct()
```
    Indicates whether the term is an n-ary distinct predicate (every argument is mutually distinct).
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isITE
```
public boolean isITE()
```
    Indicates whether the term is a ternary if-then-else term
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isAnd
```
public boolean isAnd()
```
    Indicates whether the term is an n-ary conjunction
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isOr
```
public boolean isOr()
```
    Indicates whether the term is an n-ary disjunction
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isIff
```
public boolean isIff()
```
    Indicates whether the term is an if-and-only-if (Boolean equivalence, binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isXor
```
public boolean isXor()
```
    Indicates whether the term is an exclusive or
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isNot
```
public boolean isNot()
```
    Indicates whether the term is a negation
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isImplies
```
public boolean isImplies()
```
    Indicates whether the term is an implication
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isInt
```
public boolean isInt()
```
    Indicates whether the term is of integer sort.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isReal
```
public boolean isReal()
```
    Indicates whether the term is of sort real.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isArithmeticNumeral
```
public boolean isArithmeticNumeral()
```
    Indicates whether the term is an arithmetic numeral.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isLE
```
public boolean isLE()
```
    Indicates whether the term is a less-than-or-equal
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isGE
```
public boolean isGE()
```
    Indicates whether the term is a greater-than-or-equal
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isLT
```
public boolean isLT()
```
    Indicates whether the term is a less-than
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isGT
```
public boolean isGT()
```
    Indicates whether the term is a greater-than
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isAdd
```
public boolean isAdd()
```
    Indicates whether the term is addition (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isSub
```
public boolean isSub()
```
    Indicates whether the term is subtraction (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isUMinus
```
public boolean isUMinus()
```
    Indicates whether the term is a unary minus
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isMul
```
public boolean isMul()
```
    Indicates whether the term is multiplication (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isDiv
```
public boolean isDiv()
```
    Indicates whether the term is division (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isIDiv
```
public boolean isIDiv()
```
    Indicates whether the term is integer division (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRemainder
```
public boolean isRemainder()
```
    Indicates whether the term is remainder (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isModulus
```
public boolean isModulus()
```
    Indicates whether the term is modulus (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isIntToReal
```
public boolean isIntToReal()
```
    Indicates whether the term is a coercion of integer to real (unary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRealToInt
```
public boolean isRealToInt()
```
    Indicates whether the term is a coercion of real to integer (unary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRealIsInt
```
public boolean isRealIsInt()
```
    Indicates whether the term is a check that tests whether a real is integral (unary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isArray
```
public boolean isArray()
```
    Indicates whether the term is of an array sort.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isStore
```
public boolean isStore()
```
    Indicates whether the term is an array store. Remarks: It satisfies * select(store(a,i,v),j) = if i = j then v else select(a,j). Array store * takes at least 3 arguments.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isSelect
```
public boolean isSelect()
```
    Indicates whether the term is an array select.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isConstantArray
```
public boolean isConstantArray()
```
    Indicates whether the term is a constant array. Remarks: For example, * select(const(v),i) = v holds for every v and i. The function is * unary.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isDefaultArray
```
public boolean isDefaultArray()
```
    Indicates whether the term is a default array. Remarks: For example default(const(v)) = v. The function is unary.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isArrayMap
```
public boolean isArrayMap()
```
    Indicates whether the term is an array map. Remarks: It satisfies map[f](a1,..,a_n)[i] = f(a1[i],...,a_n[i]) for every i.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isAsArray
```
public boolean isAsArray()
```
    Indicates whether the term is an as-array term. Remarks: An as-array term * is n array value that behaves as the function graph of the function * passed as parameter.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isSetUnion
```
public boolean isSetUnion()
```
    Indicates whether the term is set union
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isSetIntersect
```
public boolean isSetIntersect()
```
    Indicates whether the term is set intersection
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isSetDifference
```
public boolean isSetDifference()
```
    Indicates whether the term is set difference
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isSetComplement
```
public boolean isSetComplement()
```
    Indicates whether the term is set complement
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isSetSubset
```
public boolean isSetSubset()
```
    Indicates whether the term is set subset
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBV
```
public boolean isBV()
```
    Indicates whether the terms is of bit-vector sort.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVNumeral
```
public boolean isBVNumeral()
```
    Indicates whether the term is a bit-vector numeral
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVBitOne
```
public boolean isBVBitOne()
```
    Indicates whether the term is a one-bit bit-vector with value one
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVBitZero
```
public boolean isBVBitZero()
```
    Indicates whether the term is a one-bit bit-vector with value zero
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVUMinus
```
public boolean isBVUMinus()
```
    Indicates whether the term is a bit-vector unary minus
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVAdd
```
public boolean isBVAdd()
```
    Indicates whether the term is a bit-vector addition (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSub
```
public boolean isBVSub()
```
    Indicates whether the term is a bit-vector subtraction (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVMul
```
public boolean isBVMul()
```
    Indicates whether the term is a bit-vector multiplication (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSDiv
```
public boolean isBVSDiv()
```
    Indicates whether the term is a bit-vector signed division (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVUDiv
```
public boolean isBVUDiv()
```
    Indicates whether the term is a bit-vector unsigned division (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSRem
```
public boolean isBVSRem()
```
    Indicates whether the term is a bit-vector signed remainder (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVURem
```
public boolean isBVURem()
```
    Indicates whether the term is a bit-vector unsigned remainder (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSMod
```
public boolean isBVSMod()
```
    Indicates whether the term is a bit-vector signed modulus
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVULE
```
public boolean isBVULE()
```
    Indicates whether the term is an unsigned bit-vector less-than-or-equal
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSLE
```
public boolean isBVSLE()
```
    Indicates whether the term is a signed bit-vector less-than-or-equal
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVUGE
```
public boolean isBVUGE()
```
    Indicates whether the term is an unsigned bit-vector greater-than-or-equal
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSGE
```
public boolean isBVSGE()
```
    Indicates whether the term is a signed bit-vector greater-than-or-equal
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVULT
```
public boolean isBVULT()
```
    Indicates whether the term is an unsigned bit-vector less-than
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSLT
```
public boolean isBVSLT()
```
    Indicates whether the term is a signed bit-vector less-than
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVUGT
```
public boolean isBVUGT()
```
    Indicates whether the term is an unsigned bit-vector greater-than
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSGT
```
public boolean isBVSGT()
```
    Indicates whether the term is a signed bit-vector greater-than
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVAND
```
public boolean isBVAND()
```
    Indicates whether the term is a bit-wise AND
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVOR
```
public boolean isBVOR()
```
    Indicates whether the term is a bit-wise OR
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVNOT
```
public boolean isBVNOT()
```
    Indicates whether the term is a bit-wise NOT
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVXOR
```
public boolean isBVXOR()
```
    Indicates whether the term is a bit-wise XOR
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVNAND
```
public boolean isBVNAND()
```
    Indicates whether the term is a bit-wise NAND
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVNOR
```
public boolean isBVNOR()
```
    Indicates whether the term is a bit-wise NOR
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVXNOR
```
public boolean isBVXNOR()
```
    Indicates whether the term is a bit-wise XNOR
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVConcat
```
public boolean isBVConcat()
```
    Indicates whether the term is a bit-vector concatenation (binary)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVSignExtension
```
public boolean isBVSignExtension()
```
    Indicates whether the term is a bit-vector sign extension
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVZeroExtension
```
public boolean isBVZeroExtension()
```
    Indicates whether the term is a bit-vector zero extension
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVExtract
```
public boolean isBVExtract()
```
    Indicates whether the term is a bit-vector extraction
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVRepeat
```
public boolean isBVRepeat()
```
    Indicates whether the term is a bit-vector repetition
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVReduceOR
```
public boolean isBVReduceOR()
```
    Indicates whether the term is a bit-vector reduce OR
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVReduceAND
```
public boolean isBVReduceAND()
```
    Indicates whether the term is a bit-vector reduce AND
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVComp
```
public boolean isBVComp()
```
    Indicates whether the term is a bit-vector comparison
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVShiftLeft
```
public boolean isBVShiftLeft()
```
    Indicates whether the term is a bit-vector shift left
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVShiftRightLogical
```
public boolean isBVShiftRightLogical()
```
    Indicates whether the term is a bit-vector logical shift right
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVShiftRightArithmetic
```
public boolean isBVShiftRightArithmetic()
```
    Indicates whether the term is a bit-vector arithmetic shift left
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVRotateLeft
```
public boolean isBVRotateLeft()
```
    Indicates whether the term is a bit-vector rotate left
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVRotateRight
```
public boolean isBVRotateRight()
```
    Indicates whether the term is a bit-vector rotate right
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVRotateLeftExtended
```
public boolean isBVRotateLeftExtended()
```
    Indicates whether the term is a bit-vector rotate left (extended) Remarks: Similar to Z3_OP_ROTATE_LEFT, but it is a binary operator instead of a parametric one.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVRotateRightExtended
```
public boolean isBVRotateRightExtended()
```
    Indicates whether the term is a bit-vector rotate right (extended) Remarks: Similar to Z3_OP_ROTATE_RIGHT, but it is a binary operator instead of a parametric one.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isIntToBV
```
public boolean isIntToBV()
```
    Indicates whether the term is a coercion from integer to bit-vector Remarks: This function is not supported by the decision procedures. Only * the most rudimentary simplification rules are applied to this * function.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVToInt
```
public boolean isBVToInt()
```
    Indicates whether the term is a coercion from bit-vector to integer Remarks: This function is not supported by the decision procedures. Only * the most rudimentary simplification rules are applied to this * function.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVCarry
```
public boolean isBVCarry()
```
    Indicates whether the term is a bit-vector carry Remarks: Compute the * carry bit in a full-adder. The meaning is given by the equivalence (carry * l1 l2 l3) <=> (or (and l1 l2) (and l1 l3) (and l2 l3)))
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isBVXOR3
```
public boolean isBVXOR3()
```
    Indicates whether the term is a bit-vector ternary XOR Remarks: The * meaning is given by the equivalence (xor3 l1 l2 l3) <=> (xor (xor * l1 l2) l3)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isLabel
```
public boolean isLabel()
```
    Indicates whether the term is a label (used by the Boogie Verification condition generator). Remarks: The label has two parameters, a string and a Boolean polarity. It takes one argument, a formula.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isLabelLit
```
public boolean isLabelLit()
```
    Indicates whether the term is a label literal (used by the Boogie Verification condition generator). Remarks: A label literal has a set of string parameters. It takes no arguments.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isString
```
public boolean isString()
```
    Check whether expression is a string constant.
    
    Returns:
    
    a boolean
  - getString
```
public String getString()
```
    Retrieve string corresponding to string constant. Remark: the expression should be a string constant, (isString() should return true).
    
    Returns:
    
    a string
    
    Throws:
    
    Z3Exception - on error
  - isConcat
```
public boolean isConcat()
```
    Check whether expression is a concatenation
    
    Returns:
    
    a boolean
  - isOEQ
```
public boolean isOEQ()
```
    Indicates whether the term is a binary equivalence modulo namings. Remarks: This binary predicate is used in proof terms. It captures equisatisfiability and equivalence modulo renamings.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofTrue
```
public boolean isProofTrue()
```
    Indicates whether the term is a Proof for the expression 'true'.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofAsserted
```
public boolean isProofAsserted()
```
    Indicates whether the term is a proof for a fact asserted by the user.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofGoal
```
public boolean isProofGoal()
```
    Indicates whether the term is a proof for a fact (tagged as goal) asserted by the user.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofModusPonens
```
public boolean isProofModusPonens()
```
    Indicates whether the term is proof via modus ponens Remarks: Given a proof for p and a proof for (implies p q), produces a proof for q. T1: p T2: (implies p q) [mp T1 T2]: q The second antecedents may also be a proof for (iff p q).
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofReflexivity
```
public boolean isProofReflexivity()
```
    Indicates whether the term is a proof for (R t t), where R is a reflexive relation. Remarks: This proof object has no antecedents. The only reflexive relations that are used are equivalence modulo namings, equality and equivalence. That is, R is either '~', '=' or 'iff'.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofSymmetry
```
public boolean isProofSymmetry()
```
    Indicates whether the term is proof by symmetricity of a relation Remarks: Given an symmetric relation R and a proof for (R t s), produces * a proof for (R s t). T1: (R t s) [symmetry T1]: (R s t) T1 is the * antecedent of this proof object.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofTransitivity
```
public boolean isProofTransitivity()
```
    Indicates whether the term is a proof by transitivity of a relation Remarks: Given a transitive relation R, and proofs for (R t s) and (R s * u), produces a proof for (R t u). T1: (R t s) T2: (R s u) [trans T1 T2]: * (R t u)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofTransitivityStar
```
public boolean isProofTransitivityStar()
```
    Indicates whether the term is a proof by condensed transitivity of a relation Remarks: Condensed transitivity proof. It combines several symmetry and transitivity proofs. Example: T1: (R a b) T2: (R c b) T3: (R c d) [trans* T1 T2 T3]: (R a d) R must be a symmetric and transitive relation. Assuming that this proof object is a proof for (R s t), then a proof checker must check if it is possible to prove (R s t) using the antecedents, symmetry and transitivity. That is, if there is a path from s to t, if we view every antecedent (R a b) as an edge between a and b.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofMonotonicity
```
public boolean isProofMonotonicity()
```
    Indicates whether the term is a monotonicity proof object. Remarks: T1: (R t_1 s_1) ... Tn: (R t_n s_n) [monotonicity T1 ... Tn]: (R (f t_1 ... t_n) (f s_1 ... s_n)) Remark: if t_i == s_i, then the antecedent Ti is suppressed. That is, reflexivity proofs are suppressed to save space.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofQuantIntro
```
public boolean isProofQuantIntro()
```
    Indicates whether the term is a quant-intro proof Remarks: Given a proof * for (~ p q), produces a proof for (~ (forall (x) p) (forall (x) q)). T1: * (~ p q) [quant-intro T1]: (~ (forall (x) p) (forall (x) q))
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofDistributivity
```
public boolean isProofDistributivity()
```
    Indicates whether the term is a distributivity proof object. Remarks: Given that f (= or) distributes over g (= and), produces a proof for (= (f a (g c d)) (g (f a c) (f a d))) If f and g are associative, this proof also justifies the following equality: (= (f (g a b) (g c d)) (g (f a c) (f a d) (f b c) (f b d))) where each f and g can have arbitrary number of arguments. This proof object has no antecedents. Remark. This rule is used by the CNF conversion pass and instantiated by f = or, and g = and.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofAndElimination
```
public boolean isProofAndElimination()
```
    Indicates whether the term is a proof by elimination of AND Remarks: * Given a proof for (and l_1 ... l_n), produces a proof for l_i T1: (and * l_1 ... l_n) [and-elim T1]: l_i
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofOrElimination
```
public boolean isProofOrElimination()
```
    Indicates whether the term is a proof by elimination of not-or Remarks: * Given a proof for (not (or l_1 ... l_n)), produces a proof for (not l_i). * T1: (not (or l_1 ... l_n)) [not-or-elim T1]: (not l_i)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofRewrite
```
public boolean isProofRewrite()
```
    Indicates whether the term is a proof by rewriting Remarks: A proof for a local rewriting step (= t s). The head function symbol of t is interpreted. This proof object has no antecedents. The conclusion of a rewrite rule is either an equality (= t s), an equivalence (iff t s), or equi-satisfiability (~ t s). Remark: if f is bool, then = is iff. Examples: (= (+ x 0) x) (= (+ x 1 2) (+ 3 x)) (iff (or x false) x)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofRewriteStar
```
public boolean isProofRewriteStar()
```
    Indicates whether the term is a proof by rewriting Remarks: A proof for rewriting an expression t into an expression s. This proof object can have n antecedents. The antecedents are proofs for equalities used as substitution rules. The object is used in a few cases . The cases are: - When applying contextual simplification (CONTEXT_SIMPLIFIER=true) - When converting bit-vectors to Booleans (BIT2BOOL=true)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofPullQuant
```
public boolean isProofPullQuant()
```
    Indicates whether the term is a proof for pulling quantifiers out. Remarks: A proof for (iff (f (forall (x) q(x)) r) (forall (x) (f (q x) r))). This proof object has no antecedents.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofPushQuant
```
public boolean isProofPushQuant()
```
    Indicates whether the term is a proof for pushing quantifiers in. Remarks: A proof for: (iff (forall (x_1 ... x_m) (and p_1[x_1 ... x_m] ... p_n[x_1 ... x_m])) (and (forall (x_1 ... x_m) p_1[x_1 ... x_m]) ... (forall (x_1 ... x_m) p_n[x_1 ... x_m]))) This proof object has no antecedents
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofElimUnusedVars
```
public boolean isProofElimUnusedVars()
```
    Indicates whether the term is a proof for elimination of unused variables. Remarks: A proof for (iff (forall (x_1 ... x_n y_1 ... y_m) p[x_1 ... x_n]) (forall (x_1 ... x_n) p[x_1 ... x_n])) It is used to justify the elimination of unused variables. This proof object has no antecedents.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofDER
```
public boolean isProofDER()
```
    Indicates whether the term is a proof for destructive equality resolution Remarks: A proof for destructive equality resolution: (iff (forall (x) (or (not (= x t)) P[x])) P[t]) if x does not occur in t. This proof object has no antecedents. Several variables can be eliminated simultaneously.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofQuantInst
```
public boolean isProofQuantInst()
```
    Indicates whether the term is a proof for quantifier instantiation Remarks: A proof of (or (not (forall (x) (P x))) (P a))
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofHypothesis
```
public boolean isProofHypothesis()
```
    Indicates whether the term is a hypothesis marker. Remarks: Mark a hypothesis in a natural deduction style proof.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofLemma
```
public boolean isProofLemma()
```
    Indicates whether the term is a proof by lemma Remarks: T1: false [lemma T1]: (or (not l_1) ... (not l_n)) This proof object has one antecedent: a hypothetical proof for false. It converts the proof in a proof for (or (not l_1) ... (not l_n)), when T1 contains the hypotheses: l_1, ..., l_n.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofUnitResolution
```
public boolean isProofUnitResolution()
```
    Indicates whether the term is a proof by unit resolution Remarks: T1: * (or l_1 ... l_n l_1' ... l_m') T2: (not l_1) ... T(n+1): (not l_n) * [unit-resolution T1 ... T(n+1)]: (or l_1' ... l_m')
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofIFFTrue
```
public boolean isProofIFFTrue()
```
    Indicates whether the term is a proof by iff-true Remarks: T1: p [iff-true T1]: (iff p true)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofIFFFalse
```
public boolean isProofIFFFalse()
```
    Indicates whether the term is a proof by iff-false Remarks: T1: (not p) [iff-false T1]: (iff p false)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofCommutativity
```
public boolean isProofCommutativity()
```
    Indicates whether the term is a proof by commutativity Remarks: [comm]: (= (f a b) (f b a)) f is a commutative operator. This proof object has no antecedents. Remark: if f is bool, then = is iff.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofDefAxiom
```
public boolean isProofDefAxiom()
```
    Indicates whether the term is a proof for Tseitin-like axioms Remarks: Proof object used to justify Tseitin's like axioms: (or (not (and p q)) p) (or (not (and p q)) q) (or (not (and p q r)) p) (or (not (and p q r)) q) (or (not (and p q r)) r) ... (or (and p q) (not p) (not q)) (or (not (or p q)) p q) (or (or p q) (not p)) (or (or p q) (not q)) (or (not (iff p q)) (not p) q) (or (not (iff p q)) p (not q)) (or (iff p q) (not p) (not q)) (or (iff p q) p q) (or (not (ite a b c)) (not a) b) (or (not (ite a b c)) a c) (or (ite a b c) (not a) (not b)) (or (ite a b c) a (not c)) (or (not (not a)) (not a)) (or (not a) a) This proof object has no antecedents. Note: all axioms are propositional tautologies. Note also that 'and' and 'or' can take multiple arguments. You can recover the propositional tautologies by unfolding the Boolean connectives in the axioms a small bounded number of steps (=3).
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofDefIntro
```
public boolean isProofDefIntro()
```
    Indicates whether the term is a proof for introduction of a name Remarks: Introduces a name for a formula/term. Suppose e is an expression with free variables x, and def-intro introduces the name n(x). The possible cases are: When e is of Boolean type: [def-intro]: (and (or n (not e)) (or (not n) e)) or: [def-intro]: (or (not n) e) when e only occurs positively. When e is of the form (ite cond th el): [def-intro]: (and (or (not cond) (= n th)) (or cond (= n el))) Otherwise: [def-intro]: (= n e)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofApplyDef
```
public boolean isProofApplyDef()
```
    Indicates whether the term is a proof for application of a definition Remarks: [apply-def T1]: F ~ n F is 'equivalent' to n, given that T1 is a proof that n is a name for F.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofIFFOEQ
```
public boolean isProofIFFOEQ()
```
    Indicates whether the term is a proof iff-oeq Remarks: T1: (iff p q) [iff~ T1]: (~ p q)
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofNNFPos
```
public boolean isProofNNFPos()
```
    Indicates whether the term is a proof for a positive NNF step Remarks: Proof for a (positive) NNF step. Example: T1: (not s_1) ~ r_1 T2: (not s_2) ~ r_2 T3: s_1 ~ r_1' T4: s_2 ~ r_2' [nnf-pos T1 T2 T3 T4]: (~ (iff s_1 s_2) (and (or r_1 r_2') (or r_1' r_2))) The negation normal form steps NNF_POS and NNF_NEG are used in the following cases: (a) When creating the NNF of a positive force quantifier. The quantifier is retained (unless the bound variables are eliminated). Example T1: q ~ q_new [nnf-pos T1]: (~ (forall (x T) q) (forall (x T) q_new)) (b) When recursively creating NNF over Boolean formulas, where the top-level connective is changed during NNF conversion. The relevant Boolean connectives for NNF_POS are 'implies', 'iff', 'xor', 'ite'. NNF_NEG furthermore handles the case where negation is pushed over Boolean connectives 'and' and 'or'.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofNNFNeg
```
public boolean isProofNNFNeg()
```
    Indicates whether the term is a proof for a negative NNF step Remarks: Proof for a (negative) NNF step. Examples: T1: (not s_1) ~ r_1 ... Tn: (not s_n) ~ r_n [nnf-neg T1 ... Tn]: (not (and s_1 ... s_n)) ~ (or r_1 ... r_n) and T1: (not s_1) ~ r_1 ... Tn: (not s_n) ~ r_n [nnf-neg T1 ... Tn]: (not (or s_1 ... s_n)) ~ (and r_1 ... r_n) and T1: (not s_1) ~ r_1 T2: (not s_2) ~ r_2 T3: s_1 ~ r_1' T4: s_2 ~ r_2' [nnf-neg T1 T2 T3 T4]: (~ (not (iff s_1 s_2)) (and (or r_1 r_2) (or r_1' r_2')))
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofSkolemize
```
public boolean isProofSkolemize()
```
    Indicates whether the term is a proof for a Skolemization step Remarks: Proof for: [sk]: (~ (not (forall x (p x y))) (not (p (sk y) y))) [sk]: (~ (exists x (p x y)) (p (sk y) y)) This proof object has no antecedents.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofModusPonensOEQ
```
public boolean isProofModusPonensOEQ()
```
    Indicates whether the term is a proof by modus ponens for equi-satisfiability. Remarks: Modus ponens style rule for equi-satisfiability. T1: p T2: (~ p q) [mp~ T1 T2]: q
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isProofTheoryLemma
```
public boolean isProofTheoryLemma()
```
    Indicates whether the term is a proof for theory lemma Remarks: Generic proof for theory lemmas. The theory lemma function comes with one or more parameters. The first parameter indicates the name of the theory. For the theory of arithmetic, additional parameters provide hints for checking the theory lemma. The hints for arithmetic are: - farkas - followed by rational coefficients. Multiply the coefficients to the inequalities in the lemma, add the (negated) inequalities and obtain a contradiction. - triangle-eq - Indicates a lemma related to the equivalence: (iff (= t1 t2) (and (<= t1 t2) (<= t2 t1))) - gcd-test - Indicates an integer linear arithmetic lemma that uses a gcd test.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelation
```
public boolean isRelation()
```
    Indicates whether the term is of an array sort.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationStore
```
public boolean isRelationStore()
```
    Indicates whether the term is an relation store Remarks: Insert a record into a relation. The function takes n+1 arguments, where the first argument is the relation and the remaining n elements correspond to the n columns of the relation.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isEmptyRelation
```
public boolean isEmptyRelation()
```
    Indicates whether the term is an empty relation
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isIsEmptyRelation
```
public boolean isIsEmptyRelation()
```
    Indicates whether the term is a test for the emptiness of a relation
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationalJoin
```
public boolean isRelationalJoin()
```
    Indicates whether the term is a relational join
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationUnion
```
public boolean isRelationUnion()
```
    Indicates whether the term is the union or convex hull of two relations. Remarks: The function takes two arguments.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationWiden
```
public boolean isRelationWiden()
```
    Indicates whether the term is the widening of two relations Remarks: The function takes two arguments.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationProject
```
public boolean isRelationProject()
```
    Indicates whether the term is a projection of columns (provided as numbers in the parameters). Remarks: The function takes one argument.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationFilter
```
public boolean isRelationFilter()
```
    Indicates whether the term is a relation filter Remarks: Filter (restrict) a relation with respect to a predicate. The first argument is a relation. The second argument is a predicate with free de-Bruijn indices corresponding to the columns of the relation. So the first column in the relation has index 0.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationNegationFilter
```
public boolean isRelationNegationFilter()
```
    Indicates whether the term is an intersection of a relation with the negation of another. Remarks: Intersect the first relation with respect to negation of the second relation (the function takes two arguments). Logically, the specification can be described by a function target = filter_by_negation(pos, neg, columns) where columns are pairs c1, d1, .., cN, dN of columns from pos and neg, such that target are elements in x in pos, such that there is no y in neg that agrees with x on the columns c1, d1, .., cN, dN.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationRename
```
public boolean isRelationRename()
```
    Indicates whether the term is the renaming of a column in a relation Remarks: The function takes one argument. The parameters contain the renaming as a cycle.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationComplement
```
public boolean isRelationComplement()
```
    Indicates whether the term is the complement of a relation
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationSelect
```
public boolean isRelationSelect()
```
    Indicates whether the term is a relational select Remarks: Check if a record is an element of the relation. The function takes n+1 arguments, where the first argument is a relation, and the remaining n arguments correspond to a record.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isRelationClone
```
public boolean isRelationClone()
```
    Indicates whether the term is a relational clone (copy) Remarks: Create a fresh copy (clone) of a relation. The function is logically the identity, but in the context of a register machine allows for terms of kind isRelationUnion to perform destructive updates to the first argument.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
    
    See Also:
    
    isRelationUnion()
  - isFiniteDomain
```
public boolean isFiniteDomain()
```
    Indicates whether the term is of an array sort.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - isFiniteDomainLT
```
public boolean isFiniteDomainLT()
```
    Indicates whether the term is a less than predicate over a finite domain.
    
    Returns:
    
    a boolean
    
    Throws:
    
    Z3Exception - on error
  - getIndex
```
public int getIndex()
```
    The de-Bruijn index of a bound variable. Remarks: Bound variables are indexed by de-Bruijn indices. It is perhaps easiest to explain the meaning of de-Bruijn indices by indicating the compilation process from non-de-Bruijn formulas to de-Bruijn format. abs(forall (x1) phi) = forall (x1) abs1(phi, x1, 0) abs(forall (x1, x2) phi) = abs(forall (x1) abs(forall (x2) phi)) abs1(x, x, n) = b_n abs1(y, x, n) = y abs1(f(t1,...,tn), x, n) = f(abs1(t1,x,n), ..., abs1(tn,x,n)) abs1(forall (x1) phi, x, n) = forall (x1) (abs1(phi, x, n+1)) The last line is significant: the index of a bound variable is different depending on the scope in which it appears. The deeper x appears, the higher is its index.
    
    Returns:
    
    an int
    
    Throws:
    
    Z3Exception - on error

Class Expr

Constructor Summary

Method Summary

Methods inherited from class com.microsoft.z3.AST

Methods inherited from class com.microsoft.z3.Z3Object

Methods inherited from class java.lang.Object

Constructor Detail

Expr

Method Detail

simplify

simplify

getFuncDecl

getBoolValue

getNumArgs

getArgs

update

substitute

substitute

substituteVars

translate

toString

isNumeral

isWellSorted

getSort

isConst

isIntNum

isRatNum

isAlgebraicNumber

isBool

isTrue

isFalse

isEq

isDistinct

isITE

isAnd

isOr

isIff

isXor

isNot

isImplies

isInt

isReal

isArithmeticNumeral

isLE

isGE

isLT

isGT

isAdd

isSub

isUMinus

isMul

isDiv

isIDiv

isRemainder

isModulus

isIntToReal

isRealToInt

isRealIsInt

isArray

isStore

isSelect

isConstantArray

isDefaultArray

isArrayMap

isAsArray

isSetUnion

isSetIntersect

isSetDifference

isSetComplement

isSetSubset

isBV

isBVNumeral

isBVBitOne

isBVBitZero

isBVUMinus

isBVAdd

isBVSub

isBVMul

isBVSDiv

isBVUDiv