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Use when code reads a fixed number of characters into an array and only accesses individual elements
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Use when printf statements output strings without trailing newlines
Use when array is accessed with direct user input as index (0-based indexing)
Use when the program accesses a precomputed table using an offset (e.g., arr[n-1]) that introduces an arithmetic operation between the symbolic input and the index
Use when loop variables iterate over character values (e.g., ASCII codes) to represent different operations or choices
Use when code uses a loop to search for an input value in an array and then uses the found index for further computation
Use when code uses an array to store a single character/value that is only accessed at one index
| name | array-to-scalar-chars |
| description | Use when code reads a fixed number of characters into an array and only accesses individual elements |
A KLEE-coverage code transformation. Applying it rewrites C source so symbolic execution explores more of the program's behavior.
When code reads a fixed number of characters into an array and only accesses individual elements
Replace the character array with individual character variables and use getchar() instead of scanf()
KLEE handles scalar variables more efficiently than arrays, reducing symbolic memory complexity and constraint solving overhead
Before:
#include <stdio.h>
int main()
{
char S[50];
scanf("%s", &S);
if( S[0] == S[1] && S[1] == S[2]) {
printf("No");
}
else {
printf("Yes");
}
return 0;
}
After:
#include<stdio.h>
int main()
{
register char a,b,c;
a=getchar();b=getchar();c=getchar();
if(a==b&&b==c)puts("No");
else puts("Yes");
}
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