isla 0.2.0

Isla is a symbolic execution engine for Sail instruction set architecture specifications.
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
Test MP Allowed
States 4
1:x5=0; 1:x7=0;
1:x5=0; 1:x7=1;
1:x5=1; 1:x7=0;
1:x5=1; 1:x7=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (1:x5=1 /\ 1:x7=0)
Observation MP Sometimes 1 3
Time MP 0.00
Hash=2939da84098a543efdbb91e30585ab71

Test MP+po+fence.rw.rw Allowed
States 4
1:x5=0; 1:x7=0;
1:x5=0; 1:x7=1;
1:x5=1; 1:x7=0;
1:x5=1; 1:x7=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (1:x5=1 /\ 1:x7=0)
Observation MP+po+fence.rw.rw Sometimes 1 3
Time MP+po+fence.rw.rw 0.00
Hash=7aa5c9e692176ee0327acec3b8a2260e

Test MP+po+addr Allowed
States 4
1:x5=0; 1:x8=0;
1:x5=0; 1:x8=1;
1:x5=1; 1:x8=0;
1:x5=1; 1:x8=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (1:x5=1 /\ 1:x8=0)
Observation MP+po+addr Sometimes 1 3
Time MP+po+addr 0.00
Hash=0b3d465f7d04ff928d794588a7b65343

Test MP+po+ctrl Allowed
States 4
1:x5=0; 1:x7=0;
1:x5=0; 1:x7=1;
1:x5=1; 1:x7=0;
1:x5=1; 1:x7=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (1:x5=1 /\ 1:x7=0)
Observation MP+po+ctrl Sometimes 1 3
Time MP+po+ctrl 0.00
Hash=b87211810e0e589e410e05c78c203c57

Test S Allowed
States 4
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
1:x5=1; x=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S Sometimes 1 3
Time S 0.00
Hash=52418bca0e15fd5f9d464d05f12ef649

Test S+po+fence.rw.rw Allowed
States 4
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
1:x5=1; x=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S+po+fence.rw.rw Sometimes 1 3
Time S+po+fence.rw.rw 0.00
Hash=7778e0eddf75808a1f911d0660343326

Test S+po+data Allowed
States 4
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
1:x5=1; x=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S+po+data Sometimes 1 3
Time S+po+data 0.00
Hash=cfc58037010f56fd8c45fd430f69a56e

Test S+po+ctrl Allowed
States 4
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
1:x5=1; x=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S+po+ctrl Sometimes 1 3
Time S+po+ctrl 0.00
Hash=5cbbd76856048aded911e7f4c750dd38

Test LB Allowed
States 4
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
0:x5=1; 1:x5=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB Sometimes 1 3
Time LB 0.00
Hash=585d57e5ad552d5cb01e772ee7cc749c

Test LB+fence.rw.rw+po Allowed
States 4
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
0:x5=1; 1:x5=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+fence.rw.rw+po Sometimes 1 3
Time LB+fence.rw.rw+po 0.00
Hash=5a15974b653c676b29f249b2cd3e8284

Test LB+data+po Allowed
States 4
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
0:x5=1; 1:x5=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+data+po Sometimes 1 3
Time LB+data+po 0.00
Hash=b843f2c98b79a5075d16fc9a746df40f

Test LB+ctrl+po Allowed
States 4
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
0:x5=1; 1:x5=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+ctrl+po Sometimes 1 3
Time LB+ctrl+po 0.00
Hash=cfe18f943e8a327c04daf903b82adfca

Test MP+fence.rw.rw+po Allowed
States 4
1:x5=0; 1:x7=0;
1:x5=0; 1:x7=1;
1:x5=1; 1:x7=0;
1:x5=1; 1:x7=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (1:x5=1 /\ 1:x7=0)
Observation MP+fence.rw.rw+po Sometimes 1 3
Time MP+fence.rw.rw+po 0.00
Hash=2f6175abb7e9850adc52043327dcc10e

Test MP+fence.rw.rws Allowed
States 3
1:x5=0; 1:x7=0;
1:x5=0; 1:x7=1;
1:x5=1; 1:x7=1;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (1:x5=1 /\ 1:x7=0)
Observation MP+fence.rw.rws Never 0 3
Time MP+fence.rw.rws 0.00
Hash=4a9e26ee034419767456a3260244be69

Test MP+fence.rw.rw+addr Allowed
States 3
1:x5=0; 1:x8=0;
1:x5=0; 1:x8=1;
1:x5=1; 1:x8=1;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (1:x5=1 /\ 1:x8=0)
Observation MP+fence.rw.rw+addr Never 0 3
Time MP+fence.rw.rw+addr 0.00
Hash=b42123eb1297700758f722406645ac3a

Test MP+fence.rw.rw+ctrl Allowed
States 4
1:x5=0; 1:x7=0;
1:x5=0; 1:x7=1;
1:x5=1; 1:x7=0;
1:x5=1; 1:x7=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (1:x5=1 /\ 1:x7=0)
Observation MP+fence.rw.rw+ctrl Sometimes 1 3
Time MP+fence.rw.rw+ctrl 0.00
Hash=51ecc10877d4b4f57d8b431de41bd8b2

Test S+fence.rw.rw+po Allowed
States 4
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
1:x5=1; x=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S+fence.rw.rw+po Sometimes 1 3
Time S+fence.rw.rw+po 0.00
Hash=3427fb0c99b784eeb28d52aa8b8fb9e0

Test S+fence.rw.rws Allowed
States 3
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S+fence.rw.rws Never 0 3
Time S+fence.rw.rws 0.00
Hash=94ffc474b77207db46e75095917a6eed

Test S+fence.rw.rw+data Allowed
States 3
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S+fence.rw.rw+data Never 0 3
Time S+fence.rw.rw+data 0.00
Hash=2a85d3bd2a8149549ffcf99a97742102

Test S+fence.rw.rw+ctrl Allowed
States 3
1:x5=0; x=1;
1:x5=0; x=2;
1:x5=1; x=1;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (x=2 /\ 1:x5=1)
Observation S+fence.rw.rw+ctrl Never 0 3
Time S+fence.rw.rw+ctrl 0.00
Hash=0ad16b5e23bcdc850d579974a1bdacc1

Test LB+fence.rw.rws Allowed
States 3
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+fence.rw.rws Never 0 3
Time LB+fence.rw.rws 0.00
Hash=4724bbc714dd6ca0c74e229f1ec04504

Test LB+fence.rw.rw+data Allowed
States 3
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+fence.rw.rw+data Never 0 3
Time LB+fence.rw.rw+data 0.00
Hash=75ba623a5bb084b194b0f5ffa7ee44f0

Test LB+fence.rw.rw+ctrl Allowed
States 3
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+fence.rw.rw+ctrl Never 0 3
Time LB+fence.rw.rw+ctrl 0.00
Hash=c309ae8d323597892145e386c530454c

Test LB+datas Allowed
States 3
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+datas Never 0 3
Time LB+datas 0.00
Hash=4b6dbad1e20829e00bf8e46c27feadfe

Test LB+data+ctrl Allowed
States 3
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+data+ctrl Never 0 3
Time LB+data+ctrl 0.00
Hash=f319139e65ee926e2eb9e6f6ab312b5c

Test LB+ctrls Allowed
States 3
0:x5=0; 1:x5=0;
0:x5=0; 1:x5=1;
0:x5=1; 1:x5=0;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (0:x5=1 /\ 1:x5=1)
Observation LB+ctrls Never 0 3
Time LB+ctrls 0.00
Hash=20c875e5681b8274552ee7e89b11bd27

Test SB Allowed
States 4
0:x7=0; 1:x7=0;
0:x7=0; 1:x7=1;
0:x7=1; 1:x7=0;
0:x7=1; 1:x7=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (0:x7=0 /\ 1:x7=0)
Observation SB Sometimes 1 3
Time SB 0.00
Hash=1be21f7e9dba92a472a306f5f690a1f6

Test SB+fence.rw.rw+po Allowed
States 4
0:x7=0; 1:x7=0;
0:x7=0; 1:x7=1;
0:x7=1; 1:x7=0;
0:x7=1; 1:x7=1;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (0:x7=0 /\ 1:x7=0)
Observation SB+fence.rw.rw+po Sometimes 1 3
Time SB+fence.rw.rw+po 0.00
Hash=56191aa3396c0cfb0547b9289e0ce907

Test R Allowed
States 4
1:x7=0; y=1;
1:x7=0; y=2;
1:x7=1; y=1;
1:x7=1; y=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (y=2 /\ 1:x7=0)
Observation R Sometimes 1 3
Time R 0.00
Hash=12120a3e76b4eff4146cc459b65362fc

Test R+fence.rw.rw+po Allowed
States 4
1:x7=0; y=1;
1:x7=0; y=2;
1:x7=1; y=1;
1:x7=1; y=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (y=2 /\ 1:x7=0)
Observation R+fence.rw.rw+po Sometimes 1 3
Time R+fence.rw.rw+po 0.00
Hash=0e6fd0e981c2b757a169319c5c79e24c

Test SB+fence.rw.rws Allowed
States 3
0:x7=0; 1:x7=1;
0:x7=1; 1:x7=0;
0:x7=1; 1:x7=1;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (0:x7=0 /\ 1:x7=0)
Observation SB+fence.rw.rws Never 0 3
Time SB+fence.rw.rws 0.00
Hash=aa9bc0b78dcbf8fc7bfb4591f327e832

Test R+po+fence.rw.rw Allowed
States 4
1:x7=0; y=1;
1:x7=0; y=2;
1:x7=1; y=1;
1:x7=1; y=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (y=2 /\ 1:x7=0)
Observation R+po+fence.rw.rw Sometimes 1 3
Time R+po+fence.rw.rw 0.00
Hash=f9d838d1b25a9e060804d01cdae53c26

Test R+fence.rw.rws Allowed
States 3
1:x7=0; y=1;
1:x7=1; y=1;
1:x7=1; y=2;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (y=2 /\ 1:x7=0)
Observation R+fence.rw.rws Never 0 3
Time R+fence.rw.rws 0.00
Hash=0fa9ecc913dd7df15bbcf80a989e70b5

Test 2+2W Allowed
States 4
x=1; y=1;
x=1; y=2;
x=2; y=1;
x=2; y=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (x=2 /\ y=2)
Observation 2+2W Sometimes 1 3
Time 2+2W 0.00
Hash=1762fc2faa075cba02bfe39439261ba5

Test 2+2W+fence.rw.rw+po Allowed
States 4
x=1; y=1;
x=1; y=2;
x=2; y=1;
x=2; y=2;
Ok
Witnesses
Positive: 1 Negative: 3
Condition exists (x=2 /\ y=2)
Observation 2+2W+fence.rw.rw+po Sometimes 1 3
Time 2+2W+fence.rw.rw+po 0.00
Hash=b025d64fbd3e1907a271ab0019e1d572

Test 2+2W+fence.rw.rws Allowed
States 3
x=1; y=1;
x=1; y=2;
x=2; y=1;
No
Witnesses
Positive: 0 Negative: 3
Condition exists (x=2 /\ y=2)
Observation 2+2W+fence.rw.rws Never 0 3
Time 2+2W+fence.rw.rws 0.00
Hash=27f8f5fc72384aa640b218d931fa73d7