[Treble-Enabled Device Development A/AB ROMS] [Acme]:
I´m afraid Treble Info was wrong.

I flash Havoc OS and I found this file,

# Begin Open GApps Install Log

------------------------------------------------------------------

ROM Android version | 8.1.0

ROM Build ID | OPM6.171019.030.K1.release-keys

ROM Version increment | dfb3e6c233

ROM SDK version | 27

ROM/Recovery modversion | Havoc-OS-20180926-starlte-Official

Device Recovery | to Havoc-OS ***************

Device Name | starlte

Device Model | SM-G960F

Device Type | phone

Device CPU | arm64-v8a,armeabi-v7a,armeabi

Device A/B-partitions | false

Installer Platform | arm

ROM Platform | arm64

Display Density Used | 560

Install Type | Clean[Data Wiped]

Smart ART Pre-ODEX | false

Google Camera already installed | Clean

VRMode Compatible | true

Google Camera Compatible | true

New Camera API Compatible | true

Google Pixel Features | false

Current GApps Version | No GApps Installed

Installing GApps Zipfile | /external_sd/open_gapps-arm64-8.1-full-20200403.zip

Installing GApps Version | 20200403

Installing GApps Type | full

Config Type |

Using gapps-config | Not Used

Remove Stock/AOSP Browser | false[default]

Remove Stock/AOSP Camera | false[NO_CameraGoogle]

Remove Stock/AOSP Dialer | false[NO_DialerGoogle]

Remove Stock/AOSP Email | false[default]

Remove Stock/AOSP Gallery | false[default]

Remove Stock/AOSP Launcher | false[default]

Remove Stock/AOSP MMS App | false[default]

Remove Stock/AOSP Pico TTS | false[default]

Ignore Google Contacts | false

Ignore Google Dialer | true[NoRemove]

Ignore Google Keyboard | false

Ignore Google Package Installer | false

Ignore Google NFC Tag | false

Ignore Google WebView | false

Total System Size (KB) | 4384424

Used System Space (KB) | 1266780

Current Free Space (KB) | 3117644

Post Install Free Space (KB) | 2227260 << See Calculations Below

------------------------------------------------------------------

# End Open GApps Install Log

!!! WARNING !!! - Duplicate files were found between your ROM and this GApps

package. This is likely due to your ROM's dev including Google proprietary

files in the ROM. The duplicate files are shown in the log portion below.

# Begin GApps <> ROM Duplicate File List

/system/etc/sysconfig/dialer_experience.xml

# End GApps <> ROM Duplicate File List

# Begin GApps Size Calculations

------------------------------------------------------------------

TYPE | DESCRIPTION | SIZE | TOTAL

| Current Free Space | 3117644 | 3117644

Remove | Existing GApps | + 4 | 3117648

Remove | Obsolete Files | + 0 | 3117648

Remove | calculatorstock | + 804 | 3118452

Remove | calendarstock | + 2476 | 3120928

Remove | clockstock | + 4712 | 3125640

Remove | exchangestock | + 0 | 3125640

Remove | extservicesstock | + 20 | 3125660

Remove | extsharedstock | + 12 | 3125672

Remove | packageinstallerstock | + 5972 | 3131644

Remove | provision | + 12 | 3131656

Remove | tagstock | + 364 | 3132020

Remove | wallpapersstock | + 3028 | 3135048

Install | Core | - 110668 | 3024380

Install | batteryusage | - 9780 | 3014600

Install | books | - 13552 | 3001048

Install | calculatorgoogle | - 2632 | 2998416

Install | calendargoogle | - 20700 | 2977716

Install | carrierservices | - 17124 | 2960592

Install | chrome | - 127276 | 2833316

Install | clockgoogle | - 5996 | 2827320

Install | cloudprint | - 3840 | 2823480

Install | dialerframework | - 12 | 2823468

Install | drive | - 40884 | 2782584

Install | exchangegoogle | - 480 | 2782104

Install | gmail | - 26372 | 2755732

Install | googletts | - 29320 | 2726412

Install | keep | - 15400 | 2711012

Install | maps | - 44208 | 2666804

Install | messenger | - 44352 | 2622452

Install | moviesvrmode | - 29336 | 2593116

Install | music | - 15192 | 2577924

Install | newsstand | - 15340 | 2562584

Install | packageinstallergoogle | - 5692 | 2556892

Install | photosvrmode | - 62324 | 2494568

Install | pixellauncher | - 2296 | 2492272

Install | playgames | - 20444 | 2471828

Install | search | - 123872 | 2347956

Install | speech | - 39128 | 2308828

Install | taggoogle | - 348 | 2308480

Install | talkback | - 12436 | 2296044

Install | wallpapers | - 2368 | 2293676

Install | youtube | - 57200 | 2236476

| Buffer Space | - 9216 | 2227260

------------------------------------------------------------------

Post Install Free Space | 2227260

------------------------------------------------------------------

# End GApps Size Calculations

# Begin User's gapps-config

# End User's gapps-config

Anyway Havoc OS doesn´t work, flash finished successfully but don´t boot