Branch Distances in SearchBasedFuzzer is wrong

[sylviax26]

I believe last 3 lines in the table is wrong

    "| Condition | Distance True | Distance False |\n",
    "| ------------- |:-------------:| -----:|\n",
    "| a == b      | abs(a - b) | 1 |\n",
    "| a != b      | 1          | abs(a - b) |\n",
    "| a < b       | b - a + 1  | a - b      |\n",
    "| a <= b      | b - a      | a - b + 1  |\n",
    "| a > b       | a - b + 1  | b - a      |\n",

for example,
to make a<b true, we want estimate the distance betweern unstatisfied inputs and the closest statisfied inputs.
for unstatisfied inputs, a>=b . so, the distance true should be a - b + 1 instead of b - a + 1

similarly, the distance false should be b - a instead of a - b

fixed:

    "| Condition | Distance True | Distance False |\n",
    "| ------------- |:-------------:| -----:|\n",
    "| a == b      | abs(a - b) | 1 |\n",
    "| a != b      | 1          | abs(a - b) |\n",
    "| a < b       | a - b + 1  | b - a      |\n",
    "| a <= b      | a - b      | b - a + 1  |\n",
    "| a > b       | b - a + 1  | a - b      |\n",

[sylviax26]

The following code is right so no need to fix.

fuzzingbook/notebooks/SearchBasedFuzzer.ipynb

Lines 1424 to 1428 in 210a0fd

	" elif op == \"Lt\":\n",
	" if lhs < rhs:\n",
	" distance_false = rhs - lhs\n",
	" else:\n",
	" distance_true = lhs - rhs + 1\n",