[Eva] In the malloc test, tests that the base for the imprecise builtin is weak.

tests/builtins/malloc.c

@@ -33,7 +33,7 @@ void main(int c) {
   int *mw = Frama_C_malloc_imprecise(42);
   *mw = 1;
   int *mw2 = Frama_C_malloc_imprecise(42);
-  *mw2 = 1;
+  *mw2 = 2;
 
   //  *s = 1;
 }

tests/builtins/oracle/malloc.res.oracle

@@ -72,5 +72,5 @@
                      [1] ∈ UNINITIALIZED
                      [2] ∈ {3}
                      [3..24] ∈ UNINITIALIZED
-  __alloc_w_main[bits 0 to 31] ∈ {1} or UNINITIALIZED
+  __alloc_w_main[bits 0 to 31] ∈ {1; 2} or UNINITIALIZED
                 [4..4294967295] ∈ UNINITIALIZED