./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/36-apron_21-traces-cluster-based_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/36-apron_21-traces-cluster-based_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 14:14:46,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:14:46,546 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:14:46,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:14:46,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:14:46,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:14:46,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:14:46,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:14:46,586 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:14:46,589 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:14:46,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:14:46,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:14:46,590 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:14:46,591 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:14:46,591 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:14:46,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:14:46,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:14:46,592 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:14:46,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:14:46,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:14:46,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:14:46,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:14:46,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:14:46,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:14:46,593 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:14:46,593 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:14:46,593 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:14:46,594 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:14:46,594 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:14:46,594 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:14:46,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:14:46,595 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:14:46,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:14:46,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:14:46,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:14:46,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:14:46,596 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:14:46,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:14:46,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:14:46,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:14:46,597 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:14:46,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:14:46,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:14:46,597 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:14:46,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:14:46,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:14:46,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:14:46,799 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:14:46,799 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:14:46,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/36-apron_21-traces-cluster-based_true.yml/witness.yml [2024-06-14 14:14:46,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:14:46,962 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:14:46,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-14 14:14:47,991 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:14:48,198 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:14:48,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-06-14 14:14:48,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4820dffd4/c7c9c2c5f39a4aca8fac07d7938db4b3/FLAG941691fb2 [2024-06-14 14:14:48,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4820dffd4/c7c9c2c5f39a4aca8fac07d7938db4b3 [2024-06-14 14:14:48,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:14:48,220 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:14:48,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:14:48,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:14:48,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:14:48,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:14:46" (1/2) ... [2024-06-14 14:14:48,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e73ab75 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:48, skipping insertion in model container [2024-06-14 14:14:48,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:14:46" (1/2) ... [2024-06-14 14:14:48,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4863e153 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:14:48, skipping insertion in model container [2024-06-14 14:14:48,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:14:48" (2/2) ... [2024-06-14 14:14:48,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e73ab75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48, skipping insertion in model container [2024-06-14 14:14:48,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:14:48" (2/2) ... [2024-06-14 14:14:48,228 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:14:48,279 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:14:48,280 INFO L97 edCorrectnessWitness]: Location invariant before [L730-L730] (((((! multithreaded || (-32768 <= h && -1016 <= h)) && (! multithreaded || (B_locked || ((((1998LL + (long long )g) + (long long )h >= 0LL && (0LL - (long long )g) + (long long )h >= 0LL) && (4294967294LL - (long long )g) - (long long )h >= 0LL) && (long long )g - (long long )h >= 0LL)))) && (! multithreaded || (A_locked || (((-32768 <= g && -32768 <= h) && -1016 <= h) && -999 <= g)))) && (! multithreaded || (A_locked || ((((2015LL + (long long )g) + (long long )h >= 0LL && (17LL - (long long )g) + (long long )h >= 0LL) && (4294967294LL - (long long )g) - (long long )h >= 0LL) && (long long )g - (long long )h >= 0LL)))) && (! multithreaded || (B_locked || (((-32768 <= g && -32768 <= h) && -999 <= g) && -999 <= h)))) && (! multithreaded || (-32768 <= g && -999 <= g)) [2024-06-14 14:14:48,280 INFO L97 edCorrectnessWitness]: Location invariant before [L728-L728] (((((! multithreaded || (-32768 <= h && -1016 <= h)) && (! multithreaded || (B_locked || ((((1998LL + (long long )g) + (long long )h >= 0LL && (0LL - (long long )g) + (long long )h >= 0LL) && (4294967294LL - (long long )g) - (long long )h >= 0LL) && (long long )g - (long long )h >= 0LL)))) && (! multithreaded || (A_locked || (((-32768 <= g && -32768 <= h) && -1016 <= h) && -999 <= g)))) && (! multithreaded || (A_locked || ((((2015LL + (long long )g) + (long long )h >= 0LL && (17LL - (long long )g) + (long long )h >= 0LL) && (4294967294LL - (long long )g) - (long long )h >= 0LL) && (long long )g - (long long )h >= 0LL)))) && (! multithreaded || (B_locked || (((-32768 <= g && -32768 <= h) && -999 <= g) && -999 <= h)))) && (! multithreaded || (-32768 <= g && -999 <= g)) [2024-06-14 14:14:48,281 INFO L97 edCorrectnessWitness]: Location invariant before [L729-L729] (((((! multithreaded || (-32768 <= h && -1016 <= h)) && (! multithreaded || (B_locked || ((((1998LL + (long long )g) + (long long )h >= 0LL && (0LL - (long long )g) + (long long )h >= 0LL) && (4294967294LL - (long long )g) - (long long )h >= 0LL) && (long long )g - (long long )h >= 0LL)))) && (! multithreaded || (A_locked || (((-32768 <= g && -32768 <= h) && -1016 <= h) && -999 <= g)))) && (! multithreaded || (A_locked || ((((2015LL + (long long )g) + (long long )h >= 0LL && (17LL - (long long )g) + (long long )h >= 0LL) && (4294967294LL - (long long )g) - (long long )h >= 0LL) && (long long )g - (long long )h >= 0LL)))) && (! multithreaded || (B_locked || (((-32768 <= g && -32768 <= h) && -999 <= g) && -999 <= h)))) && (! multithreaded || (-32768 <= g && -999 <= g)) [2024-06-14 14:14:48,281 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-06-14 14:14:48,281 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:14:48,281 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-06-14 14:14:48,281 INFO L106 edCorrectnessWitness]: ghost_update [L730-L730] A_locked = 1; [2024-06-14 14:14:48,281 INFO L106 edCorrectnessWitness]: ghost_update [L736-L736] A_locked = 0; [2024-06-14 14:14:48,281 INFO L106 edCorrectnessWitness]: ghost_update [L694-L694] A_locked = 1; [2024-06-14 14:14:48,282 INFO L106 edCorrectnessWitness]: ghost_update [L714-L714] B_locked = 1; [2024-06-14 14:14:48,282 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] A_locked = 1; [2024-06-14 14:14:48,282 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] A_locked = 1; [2024-06-14 14:14:48,282 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] B_locked = 0; [2024-06-14 14:14:48,282 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] B_locked = 0; [2024-06-14 14:14:48,282 INFO L106 edCorrectnessWitness]: ghost_update [L733-L733] B_locked = 1; [2024-06-14 14:14:48,282 INFO L106 edCorrectnessWitness]: ghost_update [L696-L696] A_locked = 0; [2024-06-14 14:14:48,283 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] B_locked = 1; [2024-06-14 14:14:48,283 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] A_locked = 1; [2024-06-14 14:14:48,283 INFO L106 edCorrectnessWitness]: ghost_update [L718-L718] A_locked = 0; [2024-06-14 14:14:48,283 INFO L106 edCorrectnessWitness]: ghost_update [L735-L735] B_locked = 0; [2024-06-14 14:14:48,283 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] multithreaded = 1; [2024-06-14 14:14:48,283 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] A_locked = 0; [2024-06-14 14:14:48,283 INFO L106 edCorrectnessWitness]: ghost_update [L707-L707] A_locked = 0; [2024-06-14 14:14:48,304 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:14:48,583 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:14:48,594 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:14:48,712 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:14:48,750 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:14:48,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48 WrapperNode [2024-06-14 14:14:48,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:14:48,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:14:48,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:14:48,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:14:48,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,786 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,817 INFO L138 Inliner]: procedures = 165, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 163 [2024-06-14 14:14:48,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:14:48,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:14:48,821 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:14:48,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:14:48,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,832 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,853 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-14 14:14:48,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,861 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:14:48,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:14:48,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:14:48,869 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:14:48,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (1/1) ... [2024-06-14 14:14:48,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:14:48,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:14:48,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 14:14:48,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 14:14:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-14 14:14:48,934 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-14 14:14:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-14 14:14:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:14:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-06-14 14:14:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-06-14 14:14:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-14 14:14:48,935 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-14 14:14:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:14:48,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 14:14:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-14 14:14:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-14 14:14:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:14:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:14:48,937 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:14:49,067 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:14:49,069 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:14:49,358 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:14:49,359 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:14:49,468 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:14:49,468 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 14:14:49,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:14:49 BoogieIcfgContainer [2024-06-14 14:14:49,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:14:49,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:14:49,473 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:14:49,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:14:49,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:14:46" (1/4) ... [2024-06-14 14:14:49,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595f1fde and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:14:49, skipping insertion in model container [2024-06-14 14:14:49,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:14:48" (2/4) ... [2024-06-14 14:14:49,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595f1fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:14:49, skipping insertion in model container [2024-06-14 14:14:49,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:14:48" (3/4) ... [2024-06-14 14:14:49,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595f1fde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:14:49, skipping insertion in model container [2024-06-14 14:14:49,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:14:49" (4/4) ... [2024-06-14 14:14:49,485 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-06-14 14:14:49,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:14:49,500 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 14:14:49,500 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:14:49,569 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 14:14:49,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 56 transitions, 124 flow [2024-06-14 14:14:49,636 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-14 14:14:49,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:14:49,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 107 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-06-14 14:14:49,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 56 transitions, 124 flow [2024-06-14 14:14:49,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 53 transitions, 115 flow [2024-06-14 14:14:49,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:14:49,664 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3996b7e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:14:49,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 14:14:49,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:14:49,669 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 14:14:49,669 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:14:49,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:14:49,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 14:14:49,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:14:49,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:14:49,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1454737192, now seen corresponding path program 1 times [2024-06-14 14:14:49,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:14:49,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725556997] [2024-06-14 14:14:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:14:49,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:14:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:14:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:14:50,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:14:50,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725556997] [2024-06-14 14:14:50,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725556997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:14:50,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:14:50,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 14:14:50,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654426686] [2024-06-14 14:14:50,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:14:50,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:14:50,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:14:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:14:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:14:50,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 56 [2024-06-14 14:14:50,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:50,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:14:50,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 56 [2024-06-14 14:14:50,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:14:51,882 INFO L124 PetriNetUnfolderBase]: 14383/22083 cut-off events. [2024-06-14 14:14:51,882 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-06-14 14:14:51,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42465 conditions, 22083 events. 14383/22083 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 149432 event pairs, 5668 based on Foata normal form. 240/22156 useless extension candidates. Maximal degree in co-relation 42450. Up to 12602 conditions per place. [2024-06-14 14:14:51,943 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 53 selfloop transitions, 2 changer transitions 16/80 dead transitions. [2024-06-14 14:14:51,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 315 flow [2024-06-14 14:14:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:14:51,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:14:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-06-14 14:14:51,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-14 14:14:51,953 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 115 flow. Second operand 3 states and 112 transitions. [2024-06-14 14:14:51,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 315 flow [2024-06-14 14:14:51,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 310 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:14:51,974 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 108 flow [2024-06-14 14:14:51,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2024-06-14 14:14:51,978 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2024-06-14 14:14:51,978 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 108 flow [2024-06-14 14:14:51,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:51,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:14:51,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:14:51,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:14:51,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:14:51,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:14:51,979 INFO L85 PathProgramCache]: Analyzing trace with hash 824402530, now seen corresponding path program 1 times [2024-06-14 14:14:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:14:51,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032189376] [2024-06-14 14:14:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:14:51,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:14:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:14:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:14:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:14:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032189376] [2024-06-14 14:14:52,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032189376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:14:52,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:14:52,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:14:52,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328261017] [2024-06-14 14:14:52,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:14:52,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:14:52,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:14:52,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:14:52,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:14:52,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 56 [2024-06-14 14:14:52,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:52,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:14:52,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 56 [2024-06-14 14:14:52,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:14:52,943 INFO L124 PetriNetUnfolderBase]: 4717/7627 cut-off events. [2024-06-14 14:14:52,943 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2024-06-14 14:14:52,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15438 conditions, 7627 events. 4717/7627 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 45856 event pairs, 253 based on Foata normal form. 165/7674 useless extension candidates. Maximal degree in co-relation 15423. Up to 2331 conditions per place. [2024-06-14 14:14:52,974 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 116 selfloop transitions, 9 changer transitions 2/134 dead transitions. [2024-06-14 14:14:52,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 134 transitions, 565 flow [2024-06-14 14:14:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:14:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:14:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-06-14 14:14:52,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-14 14:14:52,976 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 108 flow. Second operand 6 states and 196 transitions. [2024-06-14 14:14:52,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 134 transitions, 565 flow [2024-06-14 14:14:52,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 134 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:14:52,983 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 170 flow [2024-06-14 14:14:52,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=170, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-14 14:14:52,984 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2024-06-14 14:14:52,984 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 170 flow [2024-06-14 14:14:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:52,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:14:52,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:14:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:14:52,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:14:52,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:14:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash -803128382, now seen corresponding path program 1 times [2024-06-14 14:14:52,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:14:52,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589432427] [2024-06-14 14:14:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:14:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:14:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:14:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:14:53,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:14:53,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589432427] [2024-06-14 14:14:53,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589432427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:14:53,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:14:53,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:14:53,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366220594] [2024-06-14 14:14:53,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:14:53,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:14:53,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:14:53,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:14:53,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:14:53,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 56 [2024-06-14 14:14:53,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:53,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:14:53,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 56 [2024-06-14 14:14:53,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:14:53,882 INFO L124 PetriNetUnfolderBase]: 4796/7819 cut-off events. [2024-06-14 14:14:53,883 INFO L125 PetriNetUnfolderBase]: For 3485/3485 co-relation queries the response was YES. [2024-06-14 14:14:53,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18349 conditions, 7819 events. 4796/7819 cut-off events. For 3485/3485 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 47271 event pairs, 412 based on Foata normal form. 55/7874 useless extension candidates. Maximal degree in co-relation 18332. Up to 2385 conditions per place. [2024-06-14 14:14:53,919 INFO L140 encePairwiseOnDemand]: 39/56 looper letters, 132 selfloop transitions, 23 changer transitions 0/162 dead transitions. [2024-06-14 14:14:53,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 162 transitions, 782 flow [2024-06-14 14:14:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:14:53,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:14:53,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-06-14 14:14:53,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5943877551020408 [2024-06-14 14:14:53,921 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 170 flow. Second operand 7 states and 233 transitions. [2024-06-14 14:14:53,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 162 transitions, 782 flow [2024-06-14 14:14:53,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 162 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:14:53,928 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 327 flow [2024-06-14 14:14:53,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-14 14:14:53,929 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2024-06-14 14:14:53,929 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 327 flow [2024-06-14 14:14:53,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:53,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:14:53,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:14:53,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:14:53,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:14:53,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:14:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash 872825378, now seen corresponding path program 1 times [2024-06-14 14:14:53,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:14:53,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018423849] [2024-06-14 14:14:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:14:53,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:14:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:14:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:14:54,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:14:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018423849] [2024-06-14 14:14:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018423849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:14:54,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:14:54,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:14:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037588155] [2024-06-14 14:14:54,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:14:54,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:14:54,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:14:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:14:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:14:54,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 56 [2024-06-14 14:14:54,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:54,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:14:54,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 56 [2024-06-14 14:14:54,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:14:54,694 INFO L124 PetriNetUnfolderBase]: 4168/6859 cut-off events. [2024-06-14 14:14:54,694 INFO L125 PetriNetUnfolderBase]: For 7276/7276 co-relation queries the response was YES. [2024-06-14 14:14:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19643 conditions, 6859 events. 4168/6859 cut-off events. For 7276/7276 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 41244 event pairs, 262 based on Foata normal form. 291/7150 useless extension candidates. Maximal degree in co-relation 19623. Up to 2401 conditions per place. [2024-06-14 14:14:54,720 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 98 selfloop transitions, 6 changer transitions 35/146 dead transitions. [2024-06-14 14:14:54,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 146 transitions, 863 flow [2024-06-14 14:14:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:14:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:14:54,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-14 14:14:54,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872448979591837 [2024-06-14 14:14:54,722 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 327 flow. Second operand 7 states and 191 transitions. [2024-06-14 14:14:54,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 146 transitions, 863 flow [2024-06-14 14:14:54,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 146 transitions, 849 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:14:54,735 INFO L231 Difference]: Finished difference. Result has 70 places, 53 transitions, 226 flow [2024-06-14 14:14:54,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=70, PETRI_TRANSITIONS=53} [2024-06-14 14:14:54,736 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-06-14 14:14:54,736 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 53 transitions, 226 flow [2024-06-14 14:14:54,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:54,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:14:54,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:14:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 14:14:54,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:14:54,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:14:54,737 INFO L85 PathProgramCache]: Analyzing trace with hash -775126899, now seen corresponding path program 1 times [2024-06-14 14:14:54,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:14:54,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958241683] [2024-06-14 14:14:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:14:54,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:14:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:14:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:14:54,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:14:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958241683] [2024-06-14 14:14:54,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958241683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:14:54,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:14:54,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:14:54,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146494181] [2024-06-14 14:14:54,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:14:54,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 14:14:54,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:14:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 14:14:54,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 14:14:54,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-06-14 14:14:54,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 53 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:54,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:14:54,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-06-14 14:14:54,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:14:54,977 INFO L124 PetriNetUnfolderBase]: 1107/2022 cut-off events. [2024-06-14 14:14:54,977 INFO L125 PetriNetUnfolderBase]: For 1918/1997 co-relation queries the response was YES. [2024-06-14 14:14:54,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5418 conditions, 2022 events. 1107/2022 cut-off events. For 1918/1997 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 10772 event pairs, 148 based on Foata normal form. 247/2268 useless extension candidates. Maximal degree in co-relation 5407. Up to 1514 conditions per place. [2024-06-14 14:14:54,983 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2024-06-14 14:14:54,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 294 flow [2024-06-14 14:14:54,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:14:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:14:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-06-14 14:14:54,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-14 14:14:54,985 INFO L175 Difference]: Start difference. First operand has 70 places, 53 transitions, 226 flow. Second operand 4 states and 110 transitions. [2024-06-14 14:14:54,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 294 flow [2024-06-14 14:14:54,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 266 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 14:14:54,990 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-14 14:14:54,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-14 14:14:54,992 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2024-06-14 14:14:54,992 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-14 14:14:54,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:14:54,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-14 14:14:54,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-14 14:14:54,995 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-14 14:14:54,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-14 14:14:54,998 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-14 14:14:55,000 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-14 14:14:55,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 14:14:55,000 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-14 14:14:55,003 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:14:55,003 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:14:55,006 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-14 14:14:55,007 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-14 14:14:55,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:14:55 BasicIcfg [2024-06-14 14:14:55,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:14:55,008 INFO L158 Benchmark]: Toolchain (without parser) took 6787.88ms. Allocated memory was 140.5MB in the beginning and 931.1MB in the end (delta: 790.6MB). Free memory was 61.0MB in the beginning and 563.5MB in the end (delta: -502.5MB). Peak memory consumption was 290.9MB. Max. memory is 16.1GB. [2024-06-14 14:14:55,008 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:14:55,009 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:14:55,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 531.25ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 60.7MB in the beginning and 146.6MB in the end (delta: -85.9MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2024-06-14 14:14:55,014 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.44ms. Allocated memory is still 197.1MB. Free memory was 146.6MB in the beginning and 144.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:14:55,014 INFO L158 Benchmark]: Boogie Preprocessor took 48.17ms. Allocated memory is still 197.1MB. Free memory was 143.3MB in the beginning and 141.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:14:55,014 INFO L158 Benchmark]: RCFGBuilder took 601.10ms. Allocated memory is still 197.1MB. Free memory was 141.2MB in the beginning and 89.7MB in the end (delta: 51.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-14 14:14:55,014 INFO L158 Benchmark]: TraceAbstraction took 5534.56ms. Allocated memory was 197.1MB in the beginning and 931.1MB in the end (delta: 734.0MB). Free memory was 88.8MB in the beginning and 563.5MB in the end (delta: -474.7MB). Peak memory consumption was 259.1MB. Max. memory is 16.1GB. [2024-06-14 14:14:55,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 140.5MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 531.25ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 60.7MB in the beginning and 146.6MB in the end (delta: -85.9MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.44ms. Allocated memory is still 197.1MB. Free memory was 146.6MB in the beginning and 144.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.17ms. Allocated memory is still 197.1MB. Free memory was 143.3MB in the beginning and 141.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.10ms. Allocated memory is still 197.1MB. Free memory was 141.2MB in the beginning and 89.7MB in the end (delta: 51.5MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5534.56ms. Allocated memory was 197.1MB in the beginning and 931.1MB in the end (delta: 734.0MB). Free memory was 88.8MB in the beginning and 563.5MB in the end (delta: -474.7MB). Peak memory consumption was 259.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 728]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 729]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 730]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 91 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 424 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 403 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1141 IncrementalHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 4 mSDtfsCounter, 1141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=327occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 14:14:55,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE