Solver

java.lang.Object
- com.microsoft.z3.IDisposable
- - com.microsoft.z3.Z3Object
  - - com.microsoft.z3.Solver

```
public class Solver
extends Z3Object
```
Solvers.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`add(BoolExpr... constraints)` Assert a multiple constraints into the solver.
`void`	`assertAndTrack(BoolExpr[] constraints, BoolExpr[] ps)` Assert multiple constraints into the solver, and track them (in the unsat) core using the Boolean constants in ps.
`void`	`assertAndTrack(BoolExpr constraint, BoolExpr p)` Assert a constraint into the solver, and track it (in the unsat) core using the Boolean constant p.
`Status`	`check()` Checks whether the assertions in the solver are consistent or not.
`Status`	`check(Expr... assumptions)` Checks whether the assertions in the solver are consistent or not.
`BoolExpr[]`	`getAssertions()` The set of asserted formulas.
`java.lang.String`	`getHelp()` A string that describes all available solver parameters.
`Model`	`getModel()` The model of the last `Check`.
`int`	`getNumAssertions()` The number of assertions in the solver.
`int`	`getNumScopes()` The current number of backtracking points (scopes).
`ParamDescrs`	`getParameterDescriptions()` Retrieves parameter descriptions for solver.
`Expr`	`getProof()` The proof of the last `Check`.
`java.lang.String`	`getReasonUnknown()` A brief justification of why the last call to `Check` returned `UNKNOWN`.
`Statistics`	`getStatistics()` Solver statistics.
`BoolExpr[]`	`getUnsatCore()` The unsat core of the last `Check`.
`void`	`pop()` Backtracks one backtracking point.
`void`	`pop(int n)` Backtracks `n` backtracking points.
`void`	`push()` Creates a backtracking point.
`void`	`reset()` Resets the Solver.
`void`	`setParameters(Params value)` Sets the solver parameters.
`java.lang.String`	`toString()` A string representation of the solver.
`Solver`	`translate(Context ctx)` Create a clone of the current solver with respect to ctx.

Methods inherited from class com.microsoft.z3.Z3Object
dispose, finalize

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

- Method Detail
  - getHelp
```
public java.lang.String getHelp()
```
    A string that describes all available solver parameters.
  - setParameters
```
public void setParameters(Params value)
```
    Sets the solver parameters.
    
    Throws:
    
    Z3Exception
  - getParameterDescriptions
```
public ParamDescrs getParameterDescriptions()
```
    Retrieves parameter descriptions for solver.
    
    Throws:
    
    Z3Exception
  - getNumScopes
```
public int getNumScopes()
```
    The current number of backtracking points (scopes).
    
    See Also:
    pop(), push()
  - push
```
public void push()
```
    Creates a backtracking point.
    
    See Also:
    pop()
  - pop
```
public void pop()
```
    Backtracks one backtracking point. Remarks: .
  - pop
```
public void pop(int n)
```
    Backtracks n backtracking points. Remarks: Note that an exception is thrown if n is not smaller than NumScopes
    
    See Also:
    push()
  - reset
```
public void reset()
```
    Resets the Solver. Remarks: This removes all assertions from the solver.
  - add
```
public void add(BoolExpr... constraints)
```
    Assert a multiple constraints into the solver.
    
    Throws:
    
    Z3Exception
  - assertAndTrack
```
public void assertAndTrack(BoolExpr[] constraints,
                  BoolExpr[] ps)
```
    Assert multiple constraints into the solver, and track them (in the unsat) core using the Boolean constants in ps. Remarks: This API is an alternative to check(com.microsoft.z3.Expr...) with assumptions for extracting unsat cores. Both APIs can be used in the same solver. The unsat core will contain a combination of the Boolean variables provided using assertAndTrack and the Boolean literals provided using check(com.microsoft.z3.Expr...) with assumptions.
  - assertAndTrack
```
public void assertAndTrack(BoolExpr constraint,
                  BoolExpr p)
```
    Assert a constraint into the solver, and track it (in the unsat) core using the Boolean constant p. Remarks: This API is an alternative to check(com.microsoft.z3.Expr...) with assumptions for extracting unsat cores. Both APIs can be used in the same solver. The unsat core will contain a combination of the Boolean variables provided using assertAndTrack(com.microsoft.z3.BoolExpr[], com.microsoft.z3.BoolExpr[]) and the Boolean literals provided using check(com.microsoft.z3.Expr...) with assumptions.
  - getNumAssertions
```
public int getNumAssertions()
```
    The number of assertions in the solver.
    
    Throws:
    
    Z3Exception
  - getAssertions
```
public BoolExpr[] getAssertions()
```
    The set of asserted formulas.
    
    Throws:
    
    Z3Exception
  - check
```
public Status check(Expr... assumptions)
```
    Checks whether the assertions in the solver are consistent or not. Remarks:
    
    See Also:
    getModel(), getUnsatCore(), getProof()
  - check
```
public Status check()
```
    Checks whether the assertions in the solver are consistent or not. Remarks:
    
    See Also:
    getModel(), getUnsatCore(), getProof()
  - getModel
```
public Model getModel()
```
    The model of the last Check. Remarks: The result is null if Check was not invoked before, if its results was not SATISFIABLE, or if model production is not enabled.
    
    Throws:
    
    Z3Exception
  - getProof
```
public Expr getProof()
```
    The proof of the last Check. Remarks: The result is null if Check was not invoked before, if its results was not UNSATISFIABLE, or if proof production is disabled.
    
    Throws:
    
    Z3Exception
  - getUnsatCore
```
public BoolExpr[] getUnsatCore()
```
    The unsat core of the last Check. Remarks: The unsat core is a subset of Assertions The result is empty if Check was not invoked before, if its results was not UNSATISFIABLE, or if core production is disabled.
    
    Throws:
    
    Z3Exception
  - getReasonUnknown
```
public java.lang.String getReasonUnknown()
```
    A brief justification of why the last call to Check returned UNKNOWN.
  - translate
```
public Solver translate(Context ctx)
```
    Create a clone of the current solver with respect to ctx.
  - getStatistics
```
public Statistics getStatistics()
```
    Solver statistics.
    
    Throws:
    
    Z3Exception
  - toString
```
public java.lang.String toString()
```
    A string representation of the solver.
    
    Overrides:
    
    toString in class java.lang.Object

Class Solver

Method Summary

Methods inherited from class com.microsoft.z3.Z3Object

Methods inherited from class java.lang.Object

Method Detail

getHelp

setParameters

getParameterDescriptions

getNumScopes

push

pop

pop

reset

add

assertAndTrack

assertAndTrack

getNumAssertions

getAssertions

check

check

getModel

getProof

getUnsatCore

getReasonUnknown

translate

getStatistics

toString