frama-c - Frama C で Alt-ergo を使用して WP を証明している間のタイムアウト

Question

Frama-cを使用して以下のプログラムの正確性を検証しようとしていました私はframa-Cの新しいユーザーです。

問題：

従業員の基本給を入力し、以下に従って総給与を計算します。

基本給 <= 10000 : HRA = 20%、DA = 80%

基本給 <= 20000 : HRA = 25%、DA = 90%

基本給 > 20000 : HRA = 30%、DA = 95%

#include <limits.h>

 /*@requires sal >= 0 && sal <= INT_MAX/2;
   ensures \result > sal && \result <= INT_MAX[enter image description here][1];

   behavior sal1:
   assumes sal <= 10000;
   ensures \result == sal+(sal*0.2*0.8);
   behavior sal2:
   assumes sal <= 20000;
   ensures \result == sal+(sal*0.25*0.9);
   behavior sal3:
   assumes sal >20000;
   ensures \result == sal+(sal*0.3*0.95);
   complete behaviors sal1,sal2,sal3;
  */


double salary(double sal){
    if(sal<=10000){return (sal+(sal*0.2*0.8));}
    else if(sal<=20000){return (sal+(sal*0.25*0.9));}
    else{return (sal+(sal*0.3*0.95));}
}

私はここでどんな間違いをしていますか？前提条件をより正確にする必要があります。

コンソール メッセージ:

[wp] [Alt-Ergo 2.3.3] Goal typed_salary_ensures : Timeout (Qed:57ms) (10s) 
(cached)
[wp] [Alt-Ergo 2.3.3] Goal typed_salary_assert_rte_is_nan_or_infinite_3 : 
Timeout (Qed:20ms) (10s) (cached)
[wp] [Alt-Ergo 2.3.3] Goal typed_salary_assert_rte_is_nan_or_infinite_6 : 
Timeout (Qed:2ms) (10s) (cached)
[wp] [Alt-Ergo 2.3.3] Goal typed_salary_assert_rte_is_nan_or_infinite_5 : 
Timeout (Qed:2ms) (10s) (cached)
[wp] [Alt-Ergo 2.3.3] Goal typed_salary_assert_rte_is_nan_or_infinite_4 : 
Timeout (Qed:17ms) (10s) (cached)
[wp] [Alt-Ergo 2.3.3] Goal typed_salary_assert_rte_is_nan_or_infinite_7 : 
Timeout (Qed:15ms) (10s) (cached)
[wp] [Alt-Ergo 2.3.3] Goal typed_salary_sal1_ensures : Timeout (Qed:33ms) 
(10s) (cached)
 [wp] [Alt-Ergo 2.3.3] Goal typed_salary_assert_rte_is_nan_or_infinite_9 : 
 Timeout (Qed:2ms) (10s) (cached)
 [wp] [Alt-Ergo 2.3.3] Goal typed_salary_assert_rte_is_nan_or_infinite_8 : 
 Timeout (Qed:4ms) (10s) (cached)
 [wp] [Alt-Ergo 2.3.3] Goal typed_salary_sal2_ensures : Timeout (Qed:42ms) 
 (10s) (cached)
 [wp] [Alt-Ergo 2.3.3] Goal typed_salary_sal3_ensures : Timeout (Qed:35ms) 
 (10s) (cached)