goblint · karoliineh · Mar 5, 2026 · Mar 5, 2026
diff --git a/conf/svcomp-ghost.json b/conf/svcomp-ghost.json
@@ -86,7 +86,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/conf/svcomp23.json b/conf/svcomp23.json
@@ -68,7 +68,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic"
       ]

diff --git a/conf/svcomp24-validate.json b/conf/svcomp24-validate.json
@@ -84,7 +84,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/conf/svcomp24.json b/conf/svcomp24.json
@@ -83,7 +83,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/conf/svcomp25-validate.json b/conf/svcomp25-validate.json
@@ -64,7 +64,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/conf/svcomp25.json b/conf/svcomp25.json
@@ -63,7 +63,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/conf/svcomp26/level01.json b/conf/svcomp26/level01.json
@@ -55,7 +55,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/conf/svcomp26/level04-validate.json b/conf/svcomp26/level04-validate.json
@@ -60,7 +60,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/conf/svcomp26/level04.json b/conf/svcomp26/level04.json
@@ -60,7 +60,8 @@
         "noRecursiveIntervals",
         "enums",
         "congruence",
-        "octagon",
+        "octagonAnalysis",
+        "octagonVars",
         "wideningThresholds",
         "loopUnrollHeuristic",
         "memsafetySpecification",

diff --git a/src/autoTune.ml b/src/autoTune.ml
@@ -423,7 +423,14 @@ let congruenceOption factors file =
     activate;
   }
 
-let apronOctagonOption factors file =
+let activateOctagonAnalysis  () =
+  set_string "ana.apron.domain" "octagon";
+  set_auto "ana.activated[+]" "apron";
+  set_bool "ana.apron.threshold_widening" true;
+  set_string "ana.apron.threshold_widening_constants" "comparisons";
+  Logs.info "Enabled octagon domain."
+
+let octagonVarsOption factors file =
   let locals =
     if List.mem "specification" (get_string_list "ana.autotune.activated" ) && get_string "ana.specification" <> "" then
       if List.mem Svcomp.Specification.NoOverflow (Svcomp.Specification.of_option ()) then
@@ -447,13 +454,9 @@ let apronOctagonOption factors file =
   let allVars = (selectedGlobals @ selectedLocals) in
   let cost = (Batteries.Int.pow (locals + globals) 3) * (factors.instructions / 70) in
   let activateVars () =
-    Logs.debug "Octagon: %d" cost;
+    Logs.debug "Octagon vars: %d" cost;
     set_bool "annotation.goblint_relation_track" true;
-    set_string "ana.apron.domain" "octagon";
-    set_auto "ana.activated[+]" "apron";
-    set_bool "ana.apron.threshold_widening" true;
-    set_string "ana.apron.threshold_widening_constants" "comparisons";
-    Logs.info "Enabled octagon domain ONLY for:";
+    Logs.info "Restricted octagon analysis to following tracked variables:";
     Logs.info "%s" @@ String.concat ", " @@ List.map (fun info -> info.vname) allVars;
     List.iter (fun info -> info.vattr <- addAttribute (Attr("goblint_relation_track",[])) info.vattr) allVars
   in
@@ -556,10 +559,16 @@ let chooseConfig file =
   if isActivated "tmpSpecialAnalysis" then
     activateTmpSpecialAnalysis ();
 
+  let non_termination_task = not (isTerminationTask ()) in
+
+  (* octagonVars implies octagonAnalysis *)
+  if non_termination_task && (isActivated "octagonAnalysis" || isActivated "octagonVars") then
+    activateOctagonAnalysis ();
+
   let options = [] in
   let options = if isActivated "congruence" then (congruenceOption factors file)::options else options in
   (* Termination analysis uses apron in a different configuration. *)
-  let options = if isActivated "octagon" && not (isTerminationTask ()) then (apronOctagonOption factors file)::options else options in
+  let options = if non_termination_task && isActivated "octagonVars" then (octagonVarsOption factors file)::options else options in
   let options = if isActivated "wideningThresholds" then (wideningOption factors file)::options else options in
 
   List.iter (fun o -> o.activate ()) @@ chooseFromOptions (totalTarget - fileCompplexity) options

diff --git a/src/config/options.schema.json b/src/config/options.schema.json
@@ -556,7 +556,8 @@
                   "loopUnrollHeuristic",
                   "forceLoopUnrollForFewLoops",
                   "arrayDomain",
-                  "octagon",
+                  "octagonAnalysis",
+                  "octagonVars",
                   "wideningThresholds",
                   "memsafetySpecification",
                   "concurrencySafetySpecification",
@@ -573,7 +574,8 @@
                 "enums",
                 "loopUnrollHeuristic",
                 "arrayDomain",
-                "octagon",
+                "octagonAnalysis",
+                "octagonVars",
                 "wideningThresholds",
                 "memsafetySpecification",
                 "concurrencySafetySpecification",

diff --git a/tests/regression/29-svcomp/35-nla-sqrt.c b/tests/regression/29-svcomp/35-nla-sqrt.c
@@ -1,4 +1,4 @@
-// SKIP PARAM: --enable ana.sv-comp.functions --enable ana.autotune.enabled --set ana.autotune.activated[+] octagon
+// SKIP PARAM: --enable ana.sv-comp.functions --enable ana.autotune.enabled --set ana.autotune.activated[+] octagonVars
 // Extracted from: nla-digbench-scaling/sqrt1-ll_unwindbound5.c
 #include <goblint.h>
 extern int __VERIFIER_nondet_int(void);

diff --git a/tests/regression/29-svcomp/38-autotune-octagon-fun.t b/tests/regression/29-svcomp/38-autotune-octagon-fun.t
@@ -1,10 +1,17 @@
 Should not annotate functions for octagon.
 
-  $ goblint --enable ana.autotune.enabled --set ana.autotune.activated[*] octagon 38-autotune-octagon-fun.c
-  [Info] Enabled octagon domain ONLY for:
-  [Info] i, count, tmp, count, i, j, i___0, j___0, k, size, r
+  $ goblint --enable ana.autotune.enabled --set ana.autotune.activated[*] octagonAnalysis 38-autotune-octagon-fun.c
+  [Info] Enabled octagon domain.
   [Info][Deadcode] Logical lines of code (LLoC) summary:
     live: 5
     dead: 0
     total lines: 5
 
+  $ goblint --enable ana.autotune.enabled --set ana.autotune.activated[*] octagonVars 38-autotune-octagon-fun.c
+  [Info] Enabled octagon domain.
+  [Info] Restricted octagon analysis to following tracked variables:
+  [Info] i, count, tmp, count, i, j, i___0, j___0, k, size, r
+  [Info][Deadcode] Logical lines of code (LLoC) summary:
+    live: 5
+    dead: 0
+    total lines: 5