mirror of
https://github.com/Z3Prover/z3
synced 2026-02-17 06:11:44 +00:00
3f4bd11f00
- Fix all compilation errors in Go bindings - Add missing type definitions (Pattern, ASTVector, ParamDescrs) - Fix boolean comparisons to use bool() casts - Fix Z3_app type casts using unsafe.Pointer - Fix null symbol handling to use nil - Fix unused variable in basic_example.go - Fix CMake test target to run from examples/go directory - Restore CI steps to build and test Go bindings Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
package main
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import (
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"fmt"
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"github.com/Z3Prover/z3/src/api/go"
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)
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func main() {
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// Create a new Z3 context
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ctx := z3.NewContext()
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fmt.Println("Z3 Go Bindings - Basic Example")
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fmt.Println("================================")
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// Example 1: Simple integer constraint
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fmt.Println("\nExample 1: Solving x > 0")
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x := ctx.MkIntConst("x")
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zero := ctx.MkInt(0, ctx.MkIntSort())
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constraint := ctx.MkGt(x, zero)
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solver := ctx.NewSolver()
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solver.Assert(constraint)
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if solver.Check() == z3.Satisfiable {
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model := solver.Model()
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fmt.Println("Satisfiable!")
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fmt.Println("Model:", model.String())
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if val, ok := model.Eval(x, true); ok {
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fmt.Println("x =", val.String())
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}
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}
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// Example 2: System of equations
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fmt.Println("\nExample 2: Solving x + y = 10 ∧ x - y = 2")
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solver.Reset()
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y := ctx.MkIntConst("y")
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ten := ctx.MkInt(10, ctx.MkIntSort())
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two := ctx.MkInt(2, ctx.MkIntSort())
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eq1 := ctx.MkEq(ctx.MkAdd(x, y), ten)
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eq2 := ctx.MkEq(ctx.MkSub(x, y), two)
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solver.Assert(eq1)
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solver.Assert(eq2)
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if solver.Check() == z3.Satisfiable {
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model := solver.Model()
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fmt.Println("Satisfiable!")
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if xVal, ok := model.Eval(x, true); ok {
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fmt.Println("x =", xVal.String())
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}
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if yVal, ok := model.Eval(y, true); ok {
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fmt.Println("y =", yVal.String())
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}
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}
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// Example 3: Boolean logic
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fmt.Println("\nExample 3: Boolean satisfiability")
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solver.Reset()
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p := ctx.MkBoolConst("p")
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q := ctx.MkBoolConst("q")
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// (p ∨ q) ∧ (¬p ∨ ¬q)
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formula := ctx.MkAnd(
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ctx.MkOr(p, q),
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ctx.MkOr(ctx.MkNot(p), ctx.MkNot(q)),
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)
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solver.Assert(formula)
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if solver.Check() == z3.Satisfiable {
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model := solver.Model()
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fmt.Println("Satisfiable!")
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if pVal, ok := model.Eval(p, true); ok {
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fmt.Println("p =", pVal.String())
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}
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if qVal, ok := model.Eval(q, true); ok {
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fmt.Println("q =", qVal.String())
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}
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}
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// Example 4: Unsatisfiable constraint
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fmt.Println("\nExample 4: Checking unsatisfiability")
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solver.Reset()
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a := ctx.MkIntConst("a")
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// a > 0 ∧ a < 0 (unsatisfiable)
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solver.Assert(ctx.MkGt(a, zero))
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solver.Assert(ctx.MkLt(a, zero))
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status := solver.Check()
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fmt.Println("Status:", status.String())
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if status == z3.Unsatisfiable {
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fmt.Println("The constraints are unsatisfiable (as expected)")
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}
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fmt.Println("\nAll examples completed successfully!")
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}
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