./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f 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/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 14:47:18,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:47:18,819 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 14:47:18,824 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:47:18,824 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:47:18,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:47:18,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:47:18,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:47:18,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:47:18,856 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:47:18,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:47:18,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:47:18,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:47:18,858 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:47:18,858 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:47:18,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:47:18,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:47:18,859 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:47:18,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 14:47:18,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:47:18,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:47:18,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:47:18,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:47:18,861 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:47:18,861 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:47:18,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:47:18,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:47:18,862 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:47:18,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:47:18,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:47:18,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:47:18,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:47:18,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:47:18,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:47:18,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:47:18,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:47:18,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 14:47:18,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 14:47:18,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:47:18,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:47:18,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:47:18,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:47:18,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:47:18,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:47:19,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:47:19,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:47:19,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:47:19,124 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:47:19,125 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:47:19,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml [2024-01-27 14:47:19,245 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:47:19,245 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:47:19,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-27 14:47:20,263 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:47:20,328 INFO L384 CDTParser]: Found 0 translation units. [2024-01-27 14:47:20,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36292dd9/d6f57f9eddea43d5b7e973da872d2b96/FLAG119ee5b92 [2024-01-27 14:47:20,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36292dd9/d6f57f9eddea43d5b7e973da872d2b96 [2024-01-27 14:47:20,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:47:20,348 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:47:20,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:47:20,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:47:20,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:47:20,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:47:19" (1/2) ... [2024-01-27 14:47:20,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a45ffd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:47:20, skipping insertion in model container [2024-01-27 14:47:20,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:47:19" (1/2) ... [2024-01-27 14:47:20,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4352c178 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:47:20, skipping insertion in model container [2024-01-27 14:47:20,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:47:20" (2/2) ... [2024-01-27 14:47:20,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a45ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:20, skipping insertion in model container [2024-01-27 14:47:20,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:47:20" (2/2) ... [2024-01-27 14:47:20,359 INFO L101 ieTranslatorObserver]: Witness extractor is disabled for multiple files [2024-01-27 14:47:20,363 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.util.NoSuchElementException: No value present at java.base/java.util.Optional.get(Optional.java:148) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:150) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:117) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:147) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-01-27 14:47:20,370 INFO L158 Benchmark]: Toolchain (without parser) took 21.69ms. Allocated memory is still 161.5MB. Free memory was 94.4MB in the beginning and 92.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:47:20,371 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:47:20,371 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 161.5MB. Free memory was 135.1MB in the beginning and 134.9MB in the end (delta: 202.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:47:20,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 20.08ms. Allocated memory is still 161.5MB. Free memory was 94.2MB in the beginning and 92.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:47:20,373 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 161.5MB. Free memory was 135.1MB in the beginning and 134.9MB in the end (delta: 202.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 20.08ms. Allocated memory is still 161.5MB. Free memory was 94.2MB in the beginning and 92.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NoSuchElementException: No value present de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NoSuchElementException: No value present: java.base/java.util.Optional.get(Optional.java:148) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 14:47:22,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 14:47:22,643 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-01-27 14:47:22,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 14:47:22,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 14:47:22,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 14:47:22,697 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 14:47:22,697 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 14:47:22,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 14:47:22,700 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 14:47:22,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 14:47:22,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 14:47:22,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 14:47:22,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 14:47:22,702 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 14:47:22,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 14:47:22,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 14:47:22,703 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 14:47:22,704 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 14:47:22,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 14:47:22,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 14:47:22,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 14:47:22,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 14:47:22,705 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-01-27 14:47:22,705 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-01-27 14:47:22,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 14:47:22,706 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-01-27 14:47:22,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 14:47:22,706 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 14:47:22,706 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 14:47:22,707 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 14:47:22,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 14:47:22,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 14:47:22,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 14:47:22,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:47:22,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 14:47:22,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 14:47:22,709 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 14:47:22,709 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-01-27 14:47:22,709 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-01-27 14:47:22,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 14:47:22,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 14:47:22,710 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 14:47:22,710 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 14:47:22,710 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 14:47:22,710 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-01-27 14:47:22,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-27 14:47:22,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 14:47:23,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 14:47:23,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 14:47:23,006 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-27 14:47:23,006 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-27 14:47:23,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/48_ticket_lock_low_contention_vs-pthread.yml/witness.yml [2024-01-27 14:47:23,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 14:47:23,108 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 14:47:23,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-27 14:47:24,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 14:47:24,530 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 14:47:24,533 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-01-27 14:47:24,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04fd541a3/d7ea1a346d5c47a79c8fb7d9dc1a6f3c/FLAGa914cdb63 [2024-01-27 14:47:24,566 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04fd541a3/d7ea1a346d5c47a79c8fb7d9dc1a6f3c [2024-01-27 14:47:24,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 14:47:24,567 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-27 14:47:24,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 14:47:24,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 14:47:24,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 14:47:24,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:47:23" (1/2) ... [2024-01-27 14:47:24,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8f850b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:47:24, skipping insertion in model container [2024-01-27 14:47:24,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:47:23" (1/2) ... [2024-01-27 14:47:24,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@138cfc08 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.01 02:47:24, skipping insertion in model container [2024-01-27 14:47:24,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:47:24" (2/2) ... [2024-01-27 14:47:24,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8f850b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:24, skipping insertion in model container [2024-01-27 14:47:24,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 02:47:24" (2/2) ... [2024-01-27 14:47:24,576 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-27 14:47:24,595 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-27 14:47:24,596 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 14:47:24,597 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,597 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,597 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,597 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 14:47:24,598 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] (unsigned long )arg == 0UL [2024-01-27 14:47:24,599 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 14:47:24,599 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,599 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,599 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,599 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] c == 0U [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L694-L694] (unsigned long )arg == 0UL [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] (unsigned long )arg == 0UL [2024-01-27 14:47:24,600 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 1U [2024-01-27 14:47:24,601 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] c == 0U [2024-01-27 14:47:24,601 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] (unsigned long )arg == 0UL [2024-01-27 14:47:24,637 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 14:47:24,923 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] [2024-01-27 14:47:24,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:47:24,945 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:47:25,005 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i[30570,30583] [2024-01-27 14:47:25,007 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-27 14:47:25,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 14:47:25,052 INFO L206 MainTranslator]: Completed translation [2024-01-27 14:47:25,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25 WrapperNode [2024-01-27 14:47:25,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 14:47:25,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 14:47:25,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 14:47:25,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 14:47:25,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,110 INFO L138 Inliner]: procedures = 169, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-01-27 14:47:25,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 14:47:25,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 14:47:25,113 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 14:47:25,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 14:47:25,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,153 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 1, 5]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 1 writes are split as follows [0, 1, 0]. [2024-01-27 14:47:25,154 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,166 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 14:47:25,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 14:47:25,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 14:47:25,167 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 14:47:25,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (1/1) ... [2024-01-27 14:47:25,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 14:47:25,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 14:47:25,194 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) [2024-01-27 14:47:25,202 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 [2024-01-27 14:47:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-27 14:47:25,225 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-27 14:47:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 14:47:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 14:47:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 14:47:25,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-01-27 14:47:25,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-01-27 14:47:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-01-27 14:47:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 14:47:25,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 14:47:25,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 14:47:25,228 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 14:47:25,351 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 14:47:25,353 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 14:47:25,511 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 14:47:25,512 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 14:47:25,597 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 14:47:25,597 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-27 14:47:25,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:47:25 BoogieIcfgContainer [2024-01-27 14:47:25,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 14:47:25,599 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 14:47:25,599 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 14:47:25,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 14:47:25,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.01 02:47:23" (1/4) ... [2024-01-27 14:47:25,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681bad6f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.01 02:47:25, skipping insertion in model container [2024-01-27 14:47:25,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 02:47:24" (2/4) ... [2024-01-27 14:47:25,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681bad6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:47:25, skipping insertion in model container [2024-01-27 14:47:25,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 02:47:25" (3/4) ... [2024-01-27 14:47:25,603 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681bad6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 02:47:25, skipping insertion in model container [2024-01-27 14:47:25,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 02:47:25" (4/4) ... [2024-01-27 14:47:25,605 INFO L112 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-01-27 14:47:25,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 14:47:25,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-01-27 14:47:25,645 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 14:47:25,680 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 14:47:25,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 67 transitions, 138 flow [2024-01-27 14:47:25,736 INFO L124 PetriNetUnfolderBase]: 5/101 cut-off events. [2024-01-27 14:47:25,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:47:25,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 101 events. 5/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 320 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2024-01-27 14:47:25,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 67 transitions, 138 flow [2024-01-27 14:47:25,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 67 transitions, 138 flow [2024-01-27 14:47:25,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:47:25,762 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;@7fab4ff6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:47:25,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2024-01-27 14:47:25,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:47:25,768 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-01-27 14:47:25,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:47:25,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:25,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 14:47:25,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 14:47:25,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash 7472485, now seen corresponding path program 1 times [2024-01-27 14:47:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:25,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479403826] [2024-01-27 14:47:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:25,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:25,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:25,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:25,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-01-27 14:47:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:25,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2024-01-27 14:47:25,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:25,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:47:25,896 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:25,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:25,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479403826] [2024-01-27 14:47:25,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479403826] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:25,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:25,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:47:25,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370268001] [2024-01-27 14:47:25,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:25,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 14:47:25,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:25,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 14:47:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 14:47:25,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2024-01-27 14:47:25,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 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) [2024-01-27 14:47:25,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:25,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2024-01-27 14:47:25,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:26,000 INFO L124 PetriNetUnfolderBase]: 28/252 cut-off events. [2024-01-27 14:47:26,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:47:26,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 252 events. 28/252 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1245 event pairs, 28 based on Foata normal form. 20/194 useless extension candidates. Maximal degree in co-relation 280. Up to 77 conditions per place. [2024-01-27 14:47:26,007 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 13 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-01-27 14:47:26,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 158 flow [2024-01-27 14:47:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 14:47:26,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 14:47:26,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 118 transitions. [2024-01-27 14:47:26,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8805970149253731 [2024-01-27 14:47:26,059 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 138 flow. Second operand 2 states and 118 transitions. [2024-01-27 14:47:26,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 158 flow [2024-01-27 14:47:26,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 158 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 14:47:26,090 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 132 flow [2024-01-27 14:47:26,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-01-27 14:47:26,095 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 1 predicate places. [2024-01-27 14:47:26,095 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 132 flow [2024-01-27 14:47:26,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.5) internal successors, (105), 2 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) [2024-01-27 14:47:26,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:26,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 14:47:26,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-01-27 14:47:26,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:26,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 14:47:26,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:26,302 INFO L85 PathProgramCache]: Analyzing trace with hash 231657448, now seen corresponding path program 1 times [2024-01-27 14:47:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:26,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23038461] [2024-01-27 14:47:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:26,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:26,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:26,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:26,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-01-27 14:47:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:26,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 14:47:26,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:47:26,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:26,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:26,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23038461] [2024-01-27 14:47:26,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23038461] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:26,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:26,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:47:26,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756484543] [2024-01-27 14:47:26,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:26,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:47:26,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:26,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:47:26,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:47:26,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 67 [2024-01-27 14:47:26,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-01-27 14:47:26,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:26,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 67 [2024-01-27 14:47:26,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:26,514 INFO L124 PetriNetUnfolderBase]: 28/225 cut-off events. [2024-01-27 14:47:26,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:47:26,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 225 events. 28/225 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1024 event pairs, 18 based on Foata normal form. 24/193 useless extension candidates. Maximal degree in co-relation 303. Up to 40 conditions per place. [2024-01-27 14:47:26,517 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 15 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-01-27 14:47:26,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 162 flow [2024-01-27 14:47:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:47:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:47:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-01-27 14:47:26,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7860696517412935 [2024-01-27 14:47:26,524 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 132 flow. Second operand 3 states and 158 transitions. [2024-01-27 14:47:26,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 162 flow [2024-01-27 14:47:26,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 162 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 14:47:26,529 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 124 flow [2024-01-27 14:47:26,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-01-27 14:47:26,530 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -3 predicate places. [2024-01-27 14:47:26,530 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 124 flow [2024-01-27 14:47:26,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2024-01-27 14:47:26,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:26,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 14:47:26,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-01-27 14:47:26,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:26,734 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 14:47:26,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1408442655, now seen corresponding path program 1 times [2024-01-27 14:47:26,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:26,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58401552] [2024-01-27 14:47:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:26,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:26,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:26,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:26,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-01-27 14:47:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:26,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 14:47:26,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:47:26,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:26,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:26,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58401552] [2024-01-27 14:47:26,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58401552] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:26,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:26,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:47:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155672379] [2024-01-27 14:47:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:47:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:47:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:47:26,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 67 [2024-01-27 14:47:26,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-01-27 14:47:26,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:26,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 67 [2024-01-27 14:47:26,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:26,949 INFO L124 PetriNetUnfolderBase]: 35/279 cut-off events. [2024-01-27 14:47:26,949 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-27 14:47:26,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 279 events. 35/279 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1423 event pairs, 12 based on Foata normal form. 32/250 useless extension candidates. Maximal degree in co-relation 386. Up to 75 conditions per place. [2024-01-27 14:47:26,950 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 24 selfloop transitions, 2 changer transitions 2/66 dead transitions. [2024-01-27 14:47:26,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 204 flow [2024-01-27 14:47:26,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:47:26,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:47:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-01-27 14:47:26,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7835820895522388 [2024-01-27 14:47:26,952 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 124 flow. Second operand 4 states and 210 transitions. [2024-01-27 14:47:26,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 204 flow [2024-01-27 14:47:26,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:47:26,954 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 112 flow [2024-01-27 14:47:26,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-01-27 14:47:26,954 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-01-27 14:47:26,955 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 112 flow [2024-01-27 14:47:26,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-01-27 14:47:26,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:26,955 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-01-27 14:47:26,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-01-27 14:47:27,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:27,158 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 31 more)] === [2024-01-27 14:47:27,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -712067630, now seen corresponding path program 1 times [2024-01-27 14:47:27,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:27,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876643072] [2024-01-27 14:47:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:27,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:27,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:27,160 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:27,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-01-27 14:47:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:47:27,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 14:47:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:47:27,233 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-01-27 14:47:27,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 14:47:27,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 34 remaining) [2024-01-27 14:47:27,235 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 34 remaining) [2024-01-27 14:47:27,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 34 remaining) [2024-01-27 14:47:27,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 34 remaining) [2024-01-27 14:47:27,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 34 remaining) [2024-01-27 14:47:27,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 34 remaining) [2024-01-27 14:47:27,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 34 remaining) [2024-01-27 14:47:27,236 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 34 remaining) [2024-01-27 14:47:27,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (25 of 34 remaining) [2024-01-27 14:47:27,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 34 remaining) [2024-01-27 14:47:27,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 34 remaining) [2024-01-27 14:47:27,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 34 remaining) [2024-01-27 14:47:27,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 34 remaining) [2024-01-27 14:47:27,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 34 remaining) [2024-01-27 14:47:27,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 34 remaining) [2024-01-27 14:47:27,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 34 remaining) [2024-01-27 14:47:27,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 34 remaining) [2024-01-27 14:47:27,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 34 remaining) [2024-01-27 14:47:27,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 34 remaining) [2024-01-27 14:47:27,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (14 of 34 remaining) [2024-01-27 14:47:27,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 34 remaining) [2024-01-27 14:47:27,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 34 remaining) [2024-01-27 14:47:27,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 34 remaining) [2024-01-27 14:47:27,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 34 remaining) [2024-01-27 14:47:27,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 34 remaining) [2024-01-27 14:47:27,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 34 remaining) [2024-01-27 14:47:27,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 34 remaining) [2024-01-27 14:47:27,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 34 remaining) [2024-01-27 14:47:27,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 34 remaining) [2024-01-27 14:47:27,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 34 remaining) [2024-01-27 14:47:27,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 34 remaining) [2024-01-27 14:47:27,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 34 remaining) [2024-01-27 14:47:27,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 34 remaining) [2024-01-27 14:47:27,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 34 remaining) [2024-01-27 14:47:27,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-01-27 14:47:27,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:27,444 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-27 14:47:27,448 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-27 14:47:27,448 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-27 14:47:27,476 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-27 14:47:27,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 206 flow [2024-01-27 14:47:27,494 INFO L124 PetriNetUnfolderBase]: 8/166 cut-off events. [2024-01-27 14:47:27,495 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 14:47:27,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 166 events. 8/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 731 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 103. Up to 6 conditions per place. [2024-01-27 14:47:27,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 206 flow [2024-01-27 14:47:27,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 98 transitions, 206 flow [2024-01-27 14:47:27,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 14:47:27,501 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;@7fab4ff6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 14:47:27,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-01-27 14:47:27,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 14:47:27,502 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-01-27 14:47:27,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-27 14:47:27,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:27,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-27 14:47:27,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 14:47:27,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash 10489317, now seen corresponding path program 1 times [2024-01-27 14:47:27,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:27,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858753009] [2024-01-27 14:47:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:27,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:27,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:27,505 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:27,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-01-27 14:47:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:27,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2024-01-27 14:47:27,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:27,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:47:27,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:27,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:27,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858753009] [2024-01-27 14:47:27,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858753009] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:27,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:27,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:47:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514950172] [2024-01-27 14:47:27,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:27,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 14:47:27,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:27,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 14:47:27,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 14:47:27,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 98 [2024-01-27 14:47:27,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 98 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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) [2024-01-27 14:47:27,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:27,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 98 [2024-01-27 14:47:27,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:27,694 INFO L124 PetriNetUnfolderBase]: 328/1502 cut-off events. [2024-01-27 14:47:27,694 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-27 14:47:27,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2099 conditions, 1502 events. 328/1502 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12497 event pairs, 328 based on Foata normal form. 150/1228 useless extension candidates. Maximal degree in co-relation 372. Up to 577 conditions per place. [2024-01-27 14:47:27,723 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 18 selfloop transitions, 0 changer transitions 0/94 dead transitions. [2024-01-27 14:47:27,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 234 flow [2024-01-27 14:47:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 14:47:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 14:47:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 174 transitions. [2024-01-27 14:47:27,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8877551020408163 [2024-01-27 14:47:27,725 INFO L175 Difference]: Start difference. First operand has 99 places, 98 transitions, 206 flow. Second operand 2 states and 174 transitions. [2024-01-27 14:47:27,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 234 flow [2024-01-27 14:47:27,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 94 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 14:47:27,727 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 198 flow [2024-01-27 14:47:27,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=198, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-01-27 14:47:27,728 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 1 predicate places. [2024-01-27 14:47:27,728 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 198 flow [2024-01-27 14:47:27,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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) [2024-01-27 14:47:27,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:27,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-27 14:47:27,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-01-27 14:47:27,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:27,931 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 14:47:27,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash 325179338, now seen corresponding path program 1 times [2024-01-27 14:47:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:27,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925059215] [2024-01-27 14:47:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:27,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:27,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:27,934 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:27,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-01-27 14:47:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:27,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 14:47:27,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:47:27,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:27,987 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:27,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925059215] [2024-01-27 14:47:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925059215] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:27,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:27,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 14:47:27,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415043221] [2024-01-27 14:47:27,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:27,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:47:27,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:27,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:47:27,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:47:28,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 98 [2024-01-27 14:47:28,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-01-27 14:47:28,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:28,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 98 [2024-01-27 14:47:28,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:28,145 INFO L124 PetriNetUnfolderBase]: 328/1316 cut-off events. [2024-01-27 14:47:28,145 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-01-27 14:47:28,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1316 events. 328/1316 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10407 event pairs, 152 based on Foata normal form. 124/1152 useless extension candidates. Maximal degree in co-relation 1909. Up to 300 conditions per place. [2024-01-27 14:47:28,152 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 24 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-01-27 14:47:28,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 96 transitions, 254 flow [2024-01-27 14:47:28,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:47:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:47:28,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-01-27 14:47:28,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8231292517006803 [2024-01-27 14:47:28,154 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 198 flow. Second operand 3 states and 242 transitions. [2024-01-27 14:47:28,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 96 transitions, 254 flow [2024-01-27 14:47:28,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 14:47:28,155 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 190 flow [2024-01-27 14:47:28,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-01-27 14:47:28,156 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2024-01-27 14:47:28,156 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 190 flow [2024-01-27 14:47:28,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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) [2024-01-27 14:47:28,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:28,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-27 14:47:28,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-01-27 14:47:28,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:28,360 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 14:47:28,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1490765823, now seen corresponding path program 1 times [2024-01-27 14:47:28,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:28,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554098039] [2024-01-27 14:47:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:28,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:28,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:28,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:28,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-01-27 14:47:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:28,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 14:47:28,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:47:28,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:28,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:28,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554098039] [2024-01-27 14:47:28,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554098039] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:28,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:28,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:47:28,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755106394] [2024-01-27 14:47:28,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:47:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:47:28,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:47:28,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2024-01-27 14:47:28,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2024-01-27 14:47:28,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:28,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2024-01-27 14:47:28,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:28,632 INFO L124 PetriNetUnfolderBase]: 403/2036 cut-off events. [2024-01-27 14:47:28,633 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-01-27 14:47:28,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 2036 events. 403/2036 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 18050 event pairs, 240 based on Foata normal form. 176/1695 useless extension candidates. Maximal degree in co-relation 2829. Up to 615 conditions per place. [2024-01-27 14:47:28,643 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 34 selfloop transitions, 2 changer transitions 2/101 dead transitions. [2024-01-27 14:47:28,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 101 transitions, 305 flow [2024-01-27 14:47:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:47:28,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:47:28,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2024-01-27 14:47:28,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8163265306122449 [2024-01-27 14:47:28,644 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 190 flow. Second operand 4 states and 320 transitions. [2024-01-27 14:47:28,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 101 transitions, 305 flow [2024-01-27 14:47:28,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:47:28,646 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 178 flow [2024-01-27 14:47:28,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2024-01-27 14:47:28,647 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -8 predicate places. [2024-01-27 14:47:28,647 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 178 flow [2024-01-27 14:47:28,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 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) [2024-01-27 14:47:28,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:28,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:47:28,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-01-27 14:47:28,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:28,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 14:47:28,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2028216495, now seen corresponding path program 1 times [2024-01-27 14:47:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306739113] [2024-01-27 14:47:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:28,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:28,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:28,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:28,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-01-27 14:47:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:28,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2024-01-27 14:47:28,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 14:47:28,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:28,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306739113] [2024-01-27 14:47:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306739113] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:28,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:28,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-27 14:47:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043087105] [2024-01-27 14:47:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 14:47:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 14:47:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 14:47:28,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 98 [2024-01-27 14:47:28,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 82 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-01-27 14:47:28,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:28,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 98 [2024-01-27 14:47:28,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:28,966 INFO L124 PetriNetUnfolderBase]: 76/226 cut-off events. [2024-01-27 14:47:28,966 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-01-27 14:47:28,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 226 events. 76/226 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1215 event pairs, 76 based on Foata normal form. 55/257 useless extension candidates. Maximal degree in co-relation 393. Up to 154 conditions per place. [2024-01-27 14:47:28,967 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 11 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2024-01-27 14:47:28,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 90 flow [2024-01-27 14:47:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 14:47:28,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 14:47:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-01-27 14:47:28,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5918367346938775 [2024-01-27 14:47:28,969 INFO L175 Difference]: Start difference. First operand has 91 places, 82 transitions, 178 flow. Second operand 3 states and 174 transitions. [2024-01-27 14:47:28,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 90 flow [2024-01-27 14:47:28,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 87 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 14:47:28,970 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 65 flow [2024-01-27 14:47:28,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2024-01-27 14:47:28,970 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -64 predicate places. [2024-01-27 14:47:28,970 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 65 flow [2024-01-27 14:47:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-01-27 14:47:28,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:28,971 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-01-27 14:47:28,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-01-27 14:47:29,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:29,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 14:47:29,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:29,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1396757303, now seen corresponding path program 1 times [2024-01-27 14:47:29,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:29,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576175328] [2024-01-27 14:47:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:29,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:29,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:29,188 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:29,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-01-27 14:47:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 14:47:29,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-27 14:47:29,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 14:47:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 14:47:29,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 14:47:29,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-01-27 14:47:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576175328] [2024-01-27 14:47:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576175328] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 14:47:29,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 14:47:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 14:47:29,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195607551] [2024-01-27 14:47:29,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 14:47:29,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 14:47:29,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-01-27 14:47:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 14:47:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 14:47:29,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2024-01-27 14:47:29,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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) [2024-01-27 14:47:29,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 14:47:29,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2024-01-27 14:47:29,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 14:47:29,642 INFO L124 PetriNetUnfolderBase]: 35/151 cut-off events. [2024-01-27 14:47:29,642 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 14:47:29,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 151 events. 35/151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 781 event pairs, 4 based on Foata normal form. 10/150 useless extension candidates. Maximal degree in co-relation 241. Up to 46 conditions per place. [2024-01-27 14:47:29,643 INFO L140 encePairwiseOnDemand]: 95/98 looper letters, 18 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-01-27 14:47:29,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 123 flow [2024-01-27 14:47:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 14:47:29,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 14:47:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2024-01-27 14:47:29,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7576530612244898 [2024-01-27 14:47:29,645 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 65 flow. Second operand 4 states and 297 transitions. [2024-01-27 14:47:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 123 flow [2024-01-27 14:47:29,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 35 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 14:47:29,646 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 66 flow [2024-01-27 14:47:29,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=66, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2024-01-27 14:47:29,647 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -63 predicate places. [2024-01-27 14:47:29,647 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 66 flow [2024-01-27 14:47:29,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 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) [2024-01-27 14:47:29,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 14:47:29,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 14:47:29,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-01-27 14:47:29,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:29,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 42 more)] === [2024-01-27 14:47:29,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 14:47:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1549798421, now seen corresponding path program 1 times [2024-01-27 14:47:29,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-01-27 14:47:29,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301627112] [2024-01-27 14:47:29,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 14:47:29,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-01-27 14:47:29,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-01-27 14:47:29,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-01-27 14:47:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:47:30,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 14:47:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 14:47:30,044 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-01-27 14:47:30,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 14:47:30,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 45 remaining) [2024-01-27 14:47:30,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 45 remaining) [2024-01-27 14:47:30,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 45 remaining) [2024-01-27 14:47:30,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 45 remaining) [2024-01-27 14:47:30,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 45 remaining) [2024-01-27 14:47:30,045 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 45 remaining) [2024-01-27 14:47:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 45 remaining) [2024-01-27 14:47:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 45 remaining) [2024-01-27 14:47:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (36 of 45 remaining) [2024-01-27 14:47:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 45 remaining) [2024-01-27 14:47:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 45 remaining) [2024-01-27 14:47:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 45 remaining) [2024-01-27 14:47:30,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 45 remaining) [2024-01-27 14:47:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 45 remaining) [2024-01-27 14:47:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 45 remaining) [2024-01-27 14:47:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 45 remaining) [2024-01-27 14:47:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 45 remaining) [2024-01-27 14:47:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 45 remaining) [2024-01-27 14:47:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (26 of 45 remaining) [2024-01-27 14:47:30,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 45 remaining) [2024-01-27 14:47:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 45 remaining) [2024-01-27 14:47:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 45 remaining) [2024-01-27 14:47:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 45 remaining) [2024-01-27 14:47:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 45 remaining) [2024-01-27 14:47:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 45 remaining) [2024-01-27 14:47:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 45 remaining) [2024-01-27 14:47:30,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 45 remaining) [2024-01-27 14:47:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 45 remaining) [2024-01-27 14:47:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 45 remaining) [2024-01-27 14:47:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 45 remaining) [2024-01-27 14:47:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (14 of 45 remaining) [2024-01-27 14:47:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 45 remaining) [2024-01-27 14:47:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 45 remaining) [2024-01-27 14:47:30,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 45 remaining) [2024-01-27 14:47:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 45 remaining) [2024-01-27 14:47:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 45 remaining) [2024-01-27 14:47:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 45 remaining) [2024-01-27 14:47:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 45 remaining) [2024-01-27 14:47:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 45 remaining) [2024-01-27 14:47:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 45 remaining) [2024-01-27 14:47:30,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 45 remaining) [2024-01-27 14:47:30,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONERROR_FUNCTION (3 of 45 remaining) [2024-01-27 14:47:30,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 45 remaining) [2024-01-27 14:47:30,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 45 remaining) [2024-01-27 14:47:30,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 45 remaining) [2024-01-27 14:47:30,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-01-27 14:47:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-01-27 14:47:30,253 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-27 14:47:30,257 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2024-01-27 14:47:30,257 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 14:47:30,272 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-01-27 14:47:30,273 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-01-27 14:47:30,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 02:47:30 BasicIcfg [2024-01-27 14:47:30,273 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 14:47:30,274 INFO L158 Benchmark]: Toolchain (without parser) took 5706.78ms. Allocated memory was 65.0MB in the beginning and 176.2MB in the end (delta: 111.1MB). Free memory was 34.4MB in the beginning and 110.8MB in the end (delta: -76.4MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2024-01-27 14:47:30,274 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 44.0MB. Free memory was 27.0MB in the beginning and 26.9MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:47:30,274 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 65.0MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 14:47:30,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.19ms. Allocated memory is still 65.0MB. Free memory was 34.2MB in the beginning and 27.9MB in the end (delta: 6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-01-27 14:47:30,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.84ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 27.9MB in the beginning and 72.3MB in the end (delta: -44.4MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2024-01-27 14:47:30,275 INFO L158 Benchmark]: Boogie Preprocessor took 54.18ms. Allocated memory is still 94.4MB. Free memory was 72.3MB in the beginning and 69.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 14:47:30,275 INFO L158 Benchmark]: RCFGBuilder took 431.06ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 36.7MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-27 14:47:30,275 INFO L158 Benchmark]: TraceAbstraction took 4674.01ms. Allocated memory was 94.4MB in the beginning and 176.2MB in the end (delta: 81.8MB). Free memory was 36.1MB in the beginning and 110.8MB in the end (delta: -74.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2024-01-27 14:47:30,276 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 0.16ms. Allocated memory is still 44.0MB. Free memory was 27.0MB in the beginning and 26.9MB in the end (delta: 42.2kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.34ms. Allocated memory is still 65.0MB. Free memory is still 49.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.19ms. Allocated memory is still 65.0MB. Free memory was 34.2MB in the beginning and 27.9MB in the end (delta: 6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.84ms. Allocated memory was 65.0MB in the beginning and 94.4MB in the end (delta: 29.4MB). Free memory was 27.9MB in the beginning and 72.3MB in the end (delta: -44.4MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.18ms. Allocated memory is still 94.4MB. Free memory was 72.3MB in the beginning and 69.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 431.06ms. Allocated memory is still 94.4MB. Free memory was 69.7MB in the beginning and 36.7MB in the end (delta: 33.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4674.01ms. Allocated memory was 94.4MB in the beginning and 176.2MB in the end (delta: 81.8MB). Free memory was 36.1MB in the beginning and 110.8MB in the end (delta: -74.7MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L688] pthread_mutex_t s = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L689] unsigned c = 0; [L699] pthread_t t; VAL [c=0, s={3:0}, t={7:0}] [L700] COND FALSE !(__VERIFIER_nondet_int()) [L701] CALL thr1(0) [L692] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] [L693] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[0U]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] [L693] CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[c],IntegerLiteral[1U]]]] VAL [arg={0:0}, arg={0:0}, c=0, s={3:0}] - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 695]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 95 locations, 34 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: 1.7s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 106 IncrementalHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 106 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 4 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 125 locations, 45 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: 2.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 213 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 13 mSDtfsCounter, 244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 6 NumberOfNonLiveVariables, 211 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 3/3 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 RESULT: Ultimate proved your program to be incorrect! [2024-01-27 14:47:30,314 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE