在C++中使用Z3求解表达式变量

#include <z3.h>

int main() {
    // 创建Z3上下文
    Z3_context ctx = Z3_mk_context(Z3_mk_config());

    // 定义表达式变量
    Z3_sort int_sort = Z3_mk_int_sort(ctx);
    Z3_symbol x_name = Z3_mk_string_symbol(ctx, "x");
    Z3_ast x = Z3_mk_const(ctx, x_name, int_sort);

    // 构建表达式
    Z3_ast expr = Z3_mk_add(ctx, x, Z3_mk_int(ctx, 1, int_sort));

    // 创建求解器
    Z3_solver solver = Z3_mk_solver(ctx);

    // 添加约束条件
    Z3_ast constraint = Z3_mk_eq(ctx, expr, Z3_mk_int(ctx, 5, int_sort));
    Z3_solver_assert(ctx, solver, constraint);

    // 求解表达式
    Z3_lbool result = Z3_solver_check(ctx, solver);
    if (result == Z3_L_TRUE) {
        // 获取解的具体取值
        Z3_model model = Z3_solver_get_model(ctx, solver);
        Z3_ast value;
        Z3_model_eval(ctx, model, x, Z3_TRUE, &value);
        int x_value;
        Z3_get_numeral_int(ctx, value, &x_value);
        printf("x = %d\n", x_value);
    } else {
        printf("No solution found.\n");
    }

    // 释放资源
    Z3_del_solver(ctx, solver);
    Z3_del_context(ctx);

    return 0;
}