./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c --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/parallel-bluetooth.wvr.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/weaver/parallel-bluetooth.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bluetooth.wvr.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 14:17:50,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:17:50,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:17:50,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:17:50,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:17:50,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:17:50,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:17:50,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:17:50,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:17:50,540 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:17:50,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:17:50,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:17:50,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:17:50,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:17:50,544 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:17:50,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:17:50,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:17:50,546 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:17:50,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:17:50,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:17:50,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:17:50,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:17:50,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:17:50,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:17:50,551 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:17:50,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:17:50,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:17:50,552 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:17:50,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:17:50,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:17:50,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:17:50,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:17:50,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:17:50,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:17:50,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:17:50,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:17:50,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:17:50,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:17:50,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:17:50,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:17:50,556 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:17:50,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:17:50,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:17:50,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:17:50,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:17:50,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:17:50,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:17:50,884 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:17:50,892 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:17:50,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bluetooth.wvr.yml/witness.yml [2024-06-14 14:17:50,975 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:17:50,975 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:17:50,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2024-06-14 14:17:52,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:17:52,389 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:17:52,389 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2024-06-14 14:17:52,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b600ff/772674ab6a7d4afb893f005e39cd59f1/FLAG37865d0c2 [2024-06-14 14:17:52,414 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b600ff/772674ab6a7d4afb893f005e39cd59f1 [2024-06-14 14:17:52,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:17:52,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:17:52,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:17:52,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:17:52,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:17:52,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:17:50" (1/2) ... [2024-06-14 14:17:52,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab22718 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:17:52, skipping insertion in model container [2024-06-14 14:17:52,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:17:50" (1/2) ... [2024-06-14 14:17:52,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@131413cc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:17:52, skipping insertion in model container [2024-06-14 14:17:52,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:17:52" (2/2) ... [2024-06-14 14:17:52,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab22718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52, skipping insertion in model container [2024-06-14 14:17:52,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:17:52" (2/2) ... [2024-06-14 14:17:52,431 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:17:52,452 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:17:52,454 INFO L97 edCorrectnessWitness]: Location invariant before [L111-L111] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )pos) + (long long )sFlag >= 0LL && (2147483648LL + (long long )pos) + (long long )sEvent >= 0LL) && (2147483648LL + (long long )pos) + (long long )stopped >= 0LL) && (2147483648LL + (long long )pos) + (long long )v_assert >= 0LL) && (1LL - (long long )sFlag) + (long long )stopped >= 0LL) && (1LL - (long long )sFlag) + (long long )v_assert >= 0LL) && (1LL - (long long )sEvent) + (long long )sFlag >= 0LL) && (1LL - (long long )sEvent) + (long long )stopped >= 0LL) && (1LL - (long long )sEvent) + (long long )v_assert >= 0LL) && (1LL - (long long )stopped) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )pos) + (long long )sFlag >= 0LL) && (2147483647LL - (long long )pos) + (long long )sEvent >= 0LL) && (2147483647LL - (long long )pos) + (long long )stopped >= 0LL) && (2147483647LL - (long long )pos) + (long long )v_assert >= 0LL) && (long long )sFlag + (long long )stopped >= 0LL) && (long long )sFlag + (long long )v_assert >= 0LL) && (long long )sEvent + (long long )sFlag >= 0LL) && (long long )sEvent + (long long )stopped >= 0LL) && (long long )sEvent + (long long )v_assert >= 0LL) && (long long )stopped + (long long )v_assert >= 0LL) && (1LL + (long long )sFlag) - (long long )stopped >= 0LL) && (1LL + (long long )sFlag) - (long long )v_assert >= 0LL) && (1LL + (long long )sEvent) - (long long )sFlag >= 0LL) && (1LL + (long long )sEvent) - (long long )stopped >= 0LL) && (1LL + (long long )sEvent) - (long long )v_assert >= 0LL) && (1LL + (long long )stopped) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )pos) - (long long )sFlag >= 0LL) && (2147483649LL + (long long )pos) - (long long )sEvent >= 0LL) && (2147483649LL + (long long )pos) - (long long )stopped >= 0LL) && (2147483649LL + (long long )pos) - (long long )v_assert >= 0LL) && (2LL - (long long )sFlag) - (long long )stopped >= 0LL) && (2LL - (long long )sFlag) - (long long )v_assert >= 0LL) && (2LL - (long long )sEvent) - (long long )sFlag >= 0LL) && (2LL - (long long )sEvent) - (long long )stopped >= 0LL) && (2LL - (long long )sEvent) - (long long )v_assert >= 0LL) && (2LL - (long long )stopped) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )pos) - (long long )sFlag >= 0LL) && (2147483648LL - (long long )pos) - (long long )sEvent >= 0LL) && (2147483648LL - (long long )pos) - (long long )stopped >= 0LL) && (2147483648LL - (long long )pos) - (long long )v_assert >= 0LL) [2024-06-14 14:17:52,454 INFO L97 edCorrectnessWitness]: Location invariant before [L110-L110] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )pos) + (long long )sFlag >= 0LL && (2147483648LL + (long long )pos) + (long long )sEvent >= 0LL) && (2147483648LL + (long long )pos) + (long long )stopped >= 0LL) && (2147483648LL + (long long )pos) + (long long )v_assert >= 0LL) && (1LL - (long long )sFlag) + (long long )stopped >= 0LL) && (1LL - (long long )sFlag) + (long long )v_assert >= 0LL) && (1LL - (long long )sEvent) + (long long )sFlag >= 0LL) && (1LL - (long long )sEvent) + (long long )stopped >= 0LL) && (1LL - (long long )sEvent) + (long long )v_assert >= 0LL) && (1LL - (long long )stopped) + (long long )v_assert >= 0LL) && (2147483647LL - (long long )pos) + (long long )sFlag >= 0LL) && (2147483647LL - (long long )pos) + (long long )sEvent >= 0LL) && (2147483647LL - (long long )pos) + (long long )stopped >= 0LL) && (2147483647LL - (long long )pos) + (long long )v_assert >= 0LL) && (long long )sFlag + (long long )stopped >= 0LL) && (long long )sFlag + (long long )v_assert >= 0LL) && (long long )sEvent + (long long )sFlag >= 0LL) && (long long )sEvent + (long long )stopped >= 0LL) && (long long )sEvent + (long long )v_assert >= 0LL) && (long long )stopped + (long long )v_assert >= 0LL) && (1LL + (long long )sFlag) - (long long )stopped >= 0LL) && (1LL + (long long )sFlag) - (long long )v_assert >= 0LL) && (1LL + (long long )sEvent) - (long long )sFlag >= 0LL) && (1LL + (long long )sEvent) - (long long )stopped >= 0LL) && (1LL + (long long )sEvent) - (long long )v_assert >= 0LL) && (1LL + (long long )stopped) - (long long )v_assert >= 0LL) && (2147483649LL + (long long )pos) - (long long )sFlag >= 0LL) && (2147483649LL + (long long )pos) - (long long )sEvent >= 0LL) && (2147483649LL + (long long )pos) - (long long )stopped >= 0LL) && (2147483649LL + (long long )pos) - (long long )v_assert >= 0LL) && (2LL - (long long )sFlag) - (long long )stopped >= 0LL) && (2LL - (long long )sFlag) - (long long )v_assert >= 0LL) && (2LL - (long long )sEvent) - (long long )sFlag >= 0LL) && (2LL - (long long )sEvent) - (long long )stopped >= 0LL) && (2LL - (long long )sEvent) - (long long )v_assert >= 0LL) && (2LL - (long long )stopped) - (long long )v_assert >= 0LL) && (2147483648LL - (long long )pos) - (long long )sFlag >= 0LL) && (2147483648LL - (long long )pos) - (long long )sEvent >= 0LL) && (2147483648LL - (long long )pos) - (long long )stopped >= 0LL) && (2147483648LL - (long long )pos) - (long long )v_assert >= 0LL) [2024-06-14 14:17:52,454 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:17:52,454 INFO L106 edCorrectnessWitness]: ghost_update [L109-L109] multithreaded = 1; [2024-06-14 14:17:52,475 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:17:52,677 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:17:52,687 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:17:52,836 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:17:52,861 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:17:52,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52 WrapperNode [2024-06-14 14:17:52,862 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:17:52,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:17:52,863 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:17:52,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:17:52,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:52,888 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:52,928 INFO L138 Inliner]: procedures = 20, calls = 39, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 124 [2024-06-14 14:17:52,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:17:52,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:17:52,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:17:52,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:17:52,940 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:52,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:52,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:52,981 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 14:17:52,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:52,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:52,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:53,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:53,009 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:53,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:53,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:17:53,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:17:53,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:17:53,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:17:53,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (1/1) ... [2024-06-14 14:17:53,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:17:53,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:17:53,085 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 14:17:53,088 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 14:17:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:17:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 14:17:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 14:17:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 14:17:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 14:17:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:17:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:17:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:17:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:17:53,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:17:53,117 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 14:17:53,196 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:17:53,198 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:17:53,625 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:17:53,625 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:17:53,794 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:17:53,794 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 14:17:53,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:17:53 BoogieIcfgContainer [2024-06-14 14:17:53,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:17:53,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:17:53,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:17:53,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:17:53,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:17:50" (1/4) ... [2024-06-14 14:17:53,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e31bf0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:17:53, skipping insertion in model container [2024-06-14 14:17:53,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:17:52" (2/4) ... [2024-06-14 14:17:53,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e31bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:17:53, skipping insertion in model container [2024-06-14 14:17:53,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:17:52" (3/4) ... [2024-06-14 14:17:53,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e31bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:17:53, skipping insertion in model container [2024-06-14 14:17:53,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:17:53" (4/4) ... [2024-06-14 14:17:53,806 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2024-06-14 14:17:53,823 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:17:53,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 14:17:53,823 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:17:53,864 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-14 14:17:53,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 84 flow [2024-06-14 14:17:53,929 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2024-06-14 14:17:53,930 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-14 14:17:53,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 2/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-06-14 14:17:53,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 84 flow [2024-06-14 14:17:53,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 31 transitions, 71 flow [2024-06-14 14:17:53,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:17:53,959 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;@4bc06f6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:17:53,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 14:17:53,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:17:53,967 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 14:17:53,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:17:53,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:53,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 14:17:53,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:53,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:53,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1511989530, now seen corresponding path program 1 times [2024-06-14 14:17:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:53,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161363743] [2024-06-14 14:17:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:53,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:54,963 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 14:17:54,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:54,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161363743] [2024-06-14 14:17:54,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161363743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:54,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:54,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 14:17:54,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655200743] [2024-06-14 14:17:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:54,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:17:54,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:54,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:17:55,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:17:55,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-14 14:17:55,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 14:17:55,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:55,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-14 14:17:55,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:55,203 INFO L124 PetriNetUnfolderBase]: 199/392 cut-off events. [2024-06-14 14:17:55,206 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-06-14 14:17:55,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 392 events. 199/392 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1691 event pairs, 61 based on Foata normal form. 4/373 useless extension candidates. Maximal degree in co-relation 700. Up to 303 conditions per place. [2024-06-14 14:17:55,211 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 27 selfloop transitions, 3 changer transitions 2/41 dead transitions. [2024-06-14 14:17:55,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 161 flow [2024-06-14 14:17:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:17:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:17:55,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-06-14 14:17:55,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-06-14 14:17:55,225 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 71 flow. Second operand 3 states and 67 transitions. [2024-06-14 14:17:55,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 161 flow [2024-06-14 14:17:55,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 153 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:17:55,230 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 84 flow [2024-06-14 14:17:55,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-06-14 14:17:55,237 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-06-14 14:17:55,237 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 84 flow [2024-06-14 14:17:55,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 14:17:55,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:55,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:55,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:17:55,239 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:55,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:55,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2044903508, now seen corresponding path program 1 times [2024-06-14 14:17:55,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:55,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302269852] [2024-06-14 14:17:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:55,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:55,932 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 14:17:55,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:55,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302269852] [2024-06-14 14:17:55,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302269852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:55,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:55,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:17:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396844951] [2024-06-14 14:17:55,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:55,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:17:55,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:55,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:17:55,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:17:55,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-14 14:17:55,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 14:17:55,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:55,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-14 14:17:55,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:56,132 INFO L124 PetriNetUnfolderBase]: 184/365 cut-off events. [2024-06-14 14:17:56,132 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-06-14 14:17:56,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 365 events. 184/365 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1541 event pairs, 42 based on Foata normal form. 20/370 useless extension candidates. Maximal degree in co-relation 398. Up to 235 conditions per place. [2024-06-14 14:17:56,138 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 32 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-06-14 14:17:56,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 194 flow [2024-06-14 14:17:56,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:17:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:17:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-06-14 14:17:56,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-14 14:17:56,142 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 84 flow. Second operand 4 states and 84 transitions. [2024-06-14 14:17:56,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 194 flow [2024-06-14 14:17:56,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:17:56,146 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 112 flow [2024-06-14 14:17:56,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-06-14 14:17:56,147 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-06-14 14:17:56,148 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 112 flow [2024-06-14 14:17:56,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 14:17:56,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:56,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:56,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:17:56,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:56,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:56,152 INFO L85 PathProgramCache]: Analyzing trace with hash -807677276, now seen corresponding path program 1 times [2024-06-14 14:17:56,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:56,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998013469] [2024-06-14 14:17:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:56,605 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 14:17:56,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:56,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998013469] [2024-06-14 14:17:56,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998013469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:56,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:56,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:17:56,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303168258] [2024-06-14 14:17:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:56,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:17:56,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:56,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:17:56,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:17:56,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-14 14:17:56,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 14:17:56,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:56,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-14 14:17:56,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:56,718 INFO L124 PetriNetUnfolderBase]: 180/357 cut-off events. [2024-06-14 14:17:56,718 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-14 14:17:56,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 357 events. 180/357 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1502 event pairs, 52 based on Foata normal form. 4/346 useless extension candidates. Maximal degree in co-relation 447. Up to 263 conditions per place. [2024-06-14 14:17:56,721 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-14 14:17:56,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 194 flow [2024-06-14 14:17:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:17:56,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:17:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-14 14:17:56,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-14 14:17:56,725 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 112 flow. Second operand 4 states and 77 transitions. [2024-06-14 14:17:56,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 194 flow [2024-06-14 14:17:56,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 42 transitions, 187 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:17:56,728 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 113 flow [2024-06-14 14:17:56,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-14 14:17:56,729 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-06-14 14:17:56,730 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 113 flow [2024-06-14 14:17:56,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 14:17:56,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:56,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:56,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:17:56,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:56,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:56,731 INFO L85 PathProgramCache]: Analyzing trace with hash -721494934, now seen corresponding path program 1 times [2024-06-14 14:17:56,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:56,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479268593] [2024-06-14 14:17:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:56,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:57,183 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 14:17:57,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:57,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479268593] [2024-06-14 14:17:57,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479268593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:57,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:57,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:17:57,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696864729] [2024-06-14 14:17:57,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:57,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:57,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:57,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-14 14:17:57,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 14:17:57,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:57,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-14 14:17:57,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:57,357 INFO L124 PetriNetUnfolderBase]: 185/388 cut-off events. [2024-06-14 14:17:57,357 INFO L125 PetriNetUnfolderBase]: For 288/296 co-relation queries the response was YES. [2024-06-14 14:17:57,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 388 events. 185/388 cut-off events. For 288/296 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1720 event pairs, 33 based on Foata normal form. 16/381 useless extension candidates. Maximal degree in co-relation 575. Up to 105 conditions per place. [2024-06-14 14:17:57,359 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 34 selfloop transitions, 9 changer transitions 0/52 dead transitions. [2024-06-14 14:17:57,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 251 flow [2024-06-14 14:17:57,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:17:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:17:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-06-14 14:17:57,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-06-14 14:17:57,363 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 113 flow. Second operand 5 states and 97 transitions. [2024-06-14 14:17:57,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 251 flow [2024-06-14 14:17:57,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 14:17:57,367 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 145 flow [2024-06-14 14:17:57,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-14 14:17:57,368 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2024-06-14 14:17:57,369 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 145 flow [2024-06-14 14:17:57,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 14:17:57,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:57,369 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 14:17:57,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 14:17:57,370 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:57,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:57,370 INFO L85 PathProgramCache]: Analyzing trace with hash -751939896, now seen corresponding path program 1 times [2024-06-14 14:17:57,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:57,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919487730] [2024-06-14 14:17:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:57,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:57,877 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 14:17:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919487730] [2024-06-14 14:17:57,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919487730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:57,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:57,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:17:57,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696670927] [2024-06-14 14:17:57,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:57,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:57,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:57,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:57,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:57,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-14 14:17:57,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 14:17:57,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:57,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-14 14:17:57,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:58,064 INFO L124 PetriNetUnfolderBase]: 278/542 cut-off events. [2024-06-14 14:17:58,064 INFO L125 PetriNetUnfolderBase]: For 543/543 co-relation queries the response was YES. [2024-06-14 14:17:58,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1363 conditions, 542 events. 278/542 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2546 event pairs, 58 based on Foata normal form. 8/526 useless extension candidates. Maximal degree in co-relation 937. Up to 153 conditions per place. [2024-06-14 14:17:58,067 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 38 selfloop transitions, 11 changer transitions 4/61 dead transitions. [2024-06-14 14:17:58,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 314 flow [2024-06-14 14:17:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:17:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:17:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-14 14:17:58,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-14 14:17:58,069 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 145 flow. Second operand 6 states and 112 transitions. [2024-06-14 14:17:58,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 314 flow [2024-06-14 14:17:58,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:17:58,072 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 179 flow [2024-06-14 14:17:58,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-14 14:17:58,073 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2024-06-14 14:17:58,074 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 179 flow [2024-06-14 14:17:58,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 14:17:58,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:58,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:58,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 14:17:58,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:58,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:58,075 INFO L85 PathProgramCache]: Analyzing trace with hash -45852025, now seen corresponding path program 1 times [2024-06-14 14:17:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:58,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434085761] [2024-06-14 14:17:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:58,178 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 14:17:58,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:58,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434085761] [2024-06-14 14:17:58,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434085761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:58,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:58,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:17:58,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768374754] [2024-06-14 14:17:58,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:58,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:58,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:58,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:58,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 35 [2024-06-14 14:17:58,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 179 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 14:17:58,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:58,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 35 [2024-06-14 14:17:58,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:58,308 INFO L124 PetriNetUnfolderBase]: 200/486 cut-off events. [2024-06-14 14:17:58,308 INFO L125 PetriNetUnfolderBase]: For 289/295 co-relation queries the response was YES. [2024-06-14 14:17:58,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144 conditions, 486 events. 200/486 cut-off events. For 289/295 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2695 event pairs, 91 based on Foata normal form. 12/462 useless extension candidates. Maximal degree in co-relation 913. Up to 198 conditions per place. [2024-06-14 14:17:58,312 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 35 selfloop transitions, 13 changer transitions 0/66 dead transitions. [2024-06-14 14:17:58,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 347 flow [2024-06-14 14:17:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:17:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:17:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-14 14:17:58,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-14 14:17:58,314 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 179 flow. Second operand 7 states and 154 transitions. [2024-06-14 14:17:58,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 347 flow [2024-06-14 14:17:58,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:17:58,317 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 255 flow [2024-06-14 14:17:58,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-06-14 14:17:58,318 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-06-14 14:17:58,318 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 255 flow [2024-06-14 14:17:58,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 14:17:58,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:58,318 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] [2024-06-14 14:17:58,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 14:17:58,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:58,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:58,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1191577726, now seen corresponding path program 1 times [2024-06-14 14:17:58,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817918990] [2024-06-14 14:17:58,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:58,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:58,803 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 14:17:58,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:58,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817918990] [2024-06-14 14:17:58,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817918990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:58,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:58,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:17:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639962098] [2024-06-14 14:17:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:58,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:17:58,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:17:58,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:17:58,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-14 14:17:58,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 255 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 14:17:58,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:58,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-14 14:17:58,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:58,995 INFO L124 PetriNetUnfolderBase]: 247/529 cut-off events. [2024-06-14 14:17:58,995 INFO L125 PetriNetUnfolderBase]: For 910/910 co-relation queries the response was YES. [2024-06-14 14:17:58,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 529 events. 247/529 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2631 event pairs, 12 based on Foata normal form. 20/533 useless extension candidates. Maximal degree in co-relation 1246. Up to 164 conditions per place. [2024-06-14 14:17:58,998 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 22 selfloop transitions, 6 changer transitions 39/75 dead transitions. [2024-06-14 14:17:58,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 481 flow [2024-06-14 14:17:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:17:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:17:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-14 14:17:59,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-14 14:17:59,001 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 255 flow. Second operand 10 states and 154 transitions. [2024-06-14 14:17:59,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 481 flow [2024-06-14 14:17:59,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 475 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-14 14:17:59,006 INFO L231 Difference]: Finished difference. Result has 66 places, 29 transitions, 149 flow [2024-06-14 14:17:59,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=149, PETRI_PLACES=66, PETRI_TRANSITIONS=29} [2024-06-14 14:17:59,007 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-06-14 14:17:59,008 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 29 transitions, 149 flow [2024-06-14 14:17:59,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 14:17:59,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:59,008 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] [2024-06-14 14:17:59,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 14:17:59,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:17:59,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1330631556, now seen corresponding path program 1 times [2024-06-14 14:17:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598892902] [2024-06-14 14:17:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:59,718 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 14:17:59,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:59,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598892902] [2024-06-14 14:17:59,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598892902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:59,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:59,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:17:59,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296653406] [2024-06-14 14:17:59,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:59,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:17:59,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:59,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:17:59,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:17:59,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-14 14:17:59,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 29 transitions, 149 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 14:17:59,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:59,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-14 14:17:59,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:59,845 INFO L124 PetriNetUnfolderBase]: 44/124 cut-off events. [2024-06-14 14:17:59,845 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-14 14:17:59,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 124 events. 44/124 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 347 event pairs, 9 based on Foata normal form. 4/122 useless extension candidates. Maximal degree in co-relation 348. Up to 34 conditions per place. [2024-06-14 14:17:59,847 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2024-06-14 14:17:59,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 37 transitions, 215 flow [2024-06-14 14:17:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:17:59,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:17:59,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-14 14:17:59,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 14:17:59,848 INFO L175 Difference]: Start difference. First operand has 66 places, 29 transitions, 149 flow. Second operand 7 states and 105 transitions. [2024-06-14 14:17:59,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 37 transitions, 215 flow [2024-06-14 14:17:59,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 152 flow, removed 7 selfloop flow, removed 22 redundant places. [2024-06-14 14:17:59,850 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2024-06-14 14:17:59,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2024-06-14 14:17:59,854 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-06-14 14:17:59,854 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2024-06-14 14:17:59,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 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 14:17:59,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 14:17:59,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 14:17:59,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 14:17:59,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 14:17:59,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 14:17:59,859 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:59,861 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:17:59,861 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:17:59,866 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 14:17:59,866 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 14:17:59,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:17:59 BasicIcfg [2024-06-14 14:17:59,869 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:17:59,869 INFO L158 Benchmark]: Toolchain (without parser) took 7453.58ms. Allocated memory was 172.0MB in the beginning and 314.6MB in the end (delta: 142.6MB). Free memory was 90.3MB in the beginning and 153.0MB in the end (delta: -62.6MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. [2024-06-14 14:17:59,869 INFO L158 Benchmark]: Witness Parser took 0.25ms. Allocated memory is still 172.0MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:17:59,870 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 172.0MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:17:59,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.28ms. Allocated memory is still 172.0MB. Free memory was 90.1MB in the beginning and 140.5MB in the end (delta: -50.4MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-06-14 14:17:59,870 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.39ms. Allocated memory is still 172.0MB. Free memory was 140.5MB in the beginning and 137.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:17:59,871 INFO L158 Benchmark]: Boogie Preprocessor took 87.61ms. Allocated memory is still 172.0MB. Free memory was 137.4MB in the beginning and 140.3MB in the end (delta: -2.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-14 14:17:59,871 INFO L158 Benchmark]: RCFGBuilder took 778.13ms. Allocated memory is still 172.0MB. Free memory was 140.3MB in the beginning and 84.7MB in the end (delta: 55.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-06-14 14:17:59,871 INFO L158 Benchmark]: TraceAbstraction took 6070.67ms. Allocated memory was 172.0MB in the beginning and 314.6MB in the end (delta: 142.6MB). Free memory was 83.7MB in the beginning and 153.0MB in the end (delta: -69.3MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. [2024-06-14 14:17:59,874 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 0.25ms. Allocated memory is still 172.0MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 172.0MB. Free memory is still 137.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.28ms. Allocated memory is still 172.0MB. Free memory was 90.1MB in the beginning and 140.5MB in the end (delta: -50.4MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.39ms. Allocated memory is still 172.0MB. Free memory was 140.5MB in the beginning and 137.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.61ms. Allocated memory is still 172.0MB. Free memory was 137.4MB in the beginning and 140.3MB in the end (delta: -2.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 778.13ms. Allocated memory is still 172.0MB. Free memory was 140.3MB in the beginning and 84.7MB in the end (delta: 55.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6070.67ms. Allocated memory was 172.0MB in the beginning and 314.6MB in the end (delta: 142.6MB). Free memory was 83.7MB in the beginning and 153.0MB in the end (delta: -69.3MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 110]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 111]: 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 5 procedures, 55 locations, 4 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: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 292 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 250 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 40 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 696 IncrementalHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 44 mSDtfsCounter, 696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=6, InterpolantAutomatonStates: 46, 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, 0.2s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 2515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 14:17:59,898 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