./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-1_1-join.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/ldv-races/race-1_1-join.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-1_1-join.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-958ec4d-m [2024-02-07 14:25:36,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:25:36,283 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:25:36,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:25:36,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:25:36,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:25:36,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:25:36,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:25:36,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:25:36,316 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:25:36,317 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:25:36,317 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:25:36,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:25:36,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:25:36,319 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:25:36,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:25:36,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:25:36,319 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:25:36,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:25:36,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:25:36,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:25:36,320 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:25:36,320 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:25:36,320 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:25:36,321 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:25:36,321 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:25:36,321 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:25:36,321 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:25:36,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:25:36,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:25:36,323 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:25:36,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:25:36,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:25:36,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:25:36,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:25:36,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:25:36,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:25:36,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:25:36,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:25:36,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:25:36,324 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:25:36,325 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:25:36,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:25:36,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:25:36,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:25:36,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:25:36,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:25:36,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:25:36,601 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:25:36,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2024-02-07 14:25:37,555 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:25:37,572 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-02-07 14:25:37,877 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:25:37,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2024-02-07 14:25:37,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ceca40f/4b0500d48a544c7b983c236a6481da0c/FLAG7f361a637 [2024-02-07 14:25:37,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7ceca40f/4b0500d48a544c7b983c236a6481da0c [2024-02-07 14:25:37,919 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:25:37,920 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:25:37,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/race-1_1-join.yml/witness.yml [2024-02-07 14:25:37,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:25:37,998 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:25:38,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:25:38,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:25:38,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:25:38,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:25:37" (1/2) ... [2024-02-07 14:25:38,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218ed7c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:38, skipping insertion in model container [2024-02-07 14:25:38,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:25:37" (1/2) ... [2024-02-07 14:25:38,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a2c597b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:25:38, skipping insertion in model container [2024-02-07 14:25:38,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:25:37" (2/2) ... [2024-02-07 14:25:38,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218ed7c9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38, skipping insertion in model container [2024-02-07 14:25:38,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:25:37" (2/2) ... [2024-02-07 14:25:38,009 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:25:38,075 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:25:38,076 INFO L76 edCorrectnessWitness]: Location invariant before [L1722-L1722] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-02-07 14:25:38,076 INFO L76 edCorrectnessWitness]: Location invariant before [L1707-L1707] pdev == 1 [2024-02-07 14:25:38,076 INFO L76 edCorrectnessWitness]: Location invariant before [L1713-L1713] pdev == 3 [2024-02-07 14:25:38,077 INFO L76 edCorrectnessWitness]: Location invariant before [L1700-L1700] (((((0 <= pdev) && (1 <= pdev)) && (pdev <= 6)) && (pdev <= 127)) && (pdev != 0)) && ((pdev == 1 || pdev == 5) || pdev == 6) [2024-02-07 14:25:38,077 INFO L76 edCorrectnessWitness]: Location invariant before [L1720-L1720] (unsigned long )status == 0UL [2024-02-07 14:25:38,077 INFO L76 edCorrectnessWitness]: Location invariant before [L1693-L1693] (expression == 1 || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1))) || ((0 <= expression && expression <= 1) && (expression == 0 || expression == 1)) [2024-02-07 14:25:38,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:25:38,525 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2024-02-07 14:25:38,546 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:25:38,554 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:25:38,622 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:25:38,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:25:38,693 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:25:38,693 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38 WrapperNode [2024-02-07 14:25:38,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:25:38,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:25:38,694 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:25:38,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:25:38,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,740 INFO L138 Inliner]: procedures = 481, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 106 [2024-02-07 14:25:38,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:25:38,741 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:25:38,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:25:38,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:25:38,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,752 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,765 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 3, 5, 2]. 42 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 1, 5, 0]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-02-07 14:25:38,765 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,773 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:25:38,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:25:38,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:25:38,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:25:38,792 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (1/1) ... [2024-02-07 14:25:38,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:25:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:25:38,846 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) [2024-02-07 14:25:38,853 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 [2024-02-07 14:25:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:25:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:25:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:25:38,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-02-07 14:25:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:25:38,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:25:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:25:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-02-07 14:25:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-02-07 14:25:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-02-07 14:25:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-02-07 14:25:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:25:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:25:38,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:25:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:25:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:25:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:25:38,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:25:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:25:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:25:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:25:38,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:25:38,905 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:25:39,130 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:25:39,132 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:25:39,321 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:25:39,321 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:25:39,375 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:25:39,375 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:25:39,375 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:25:39 BoogieIcfgContainer [2024-02-07 14:25:39,376 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:25:39,377 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:25:39,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:25:39,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:25:39,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:25:37" (1/4) ... [2024-02-07 14:25:39,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195077aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:25:39, skipping insertion in model container [2024-02-07 14:25:39,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:25:37" (2/4) ... [2024-02-07 14:25:39,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195077aa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:25:39, skipping insertion in model container [2024-02-07 14:25:39,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:25:38" (3/4) ... [2024-02-07 14:25:39,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195077aa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:25:39, skipping insertion in model container [2024-02-07 14:25:39,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:25:39" (4/4) ... [2024-02-07 14:25:39,381 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2024-02-07 14:25:39,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:25:39,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-02-07 14:25:39,395 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:25:39,441 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 14:25:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 55 transitions, 117 flow [2024-02-07 14:25:39,502 INFO L124 PetriNetUnfolderBase]: 5/58 cut-off events. [2024-02-07 14:25:39,502 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:25:39,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 58 events. 5/58 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 25. Up to 3 conditions per place. [2024-02-07 14:25:39,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 55 transitions, 117 flow [2024-02-07 14:25:39,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 48 transitions, 102 flow [2024-02-07 14:25:39,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:25:39,519 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;@68f6832, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:25:39,519 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-02-07 14:25:39,520 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:25:39,521 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:25:39,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:25:39,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:39,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:25:39,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:39,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 9796, now seen corresponding path program 1 times [2024-02-07 14:25:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484610491] [2024-02-07 14:25:39,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:39,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:39,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:39,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484610491] [2024-02-07 14:25:39,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484610491] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:39,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:39,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:25:39,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079493073] [2024-02-07 14:25:39,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:39,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:39,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:39,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:39,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 55 [2024-02-07 14:25:39,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-02-07 14:25:39,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:39,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 55 [2024-02-07 14:25:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:39,927 INFO L124 PetriNetUnfolderBase]: 35/140 cut-off events. [2024-02-07 14:25:39,927 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 14:25:39,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 140 events. 35/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 478 event pairs, 5 based on Foata normal form. 7/115 useless extension candidates. Maximal degree in co-relation 195. Up to 74 conditions per place. [2024-02-07 14:25:39,931 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 26 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-02-07 14:25:39,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 164 flow [2024-02-07 14:25:39,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-02-07 14:25:39,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6303030303030303 [2024-02-07 14:25:39,941 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 102 flow. Second operand 3 states and 104 transitions. [2024-02-07 14:25:39,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 164 flow [2024-02-07 14:25:39,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:39,945 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 98 flow [2024-02-07 14:25:39,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-02-07 14:25:39,948 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2024-02-07 14:25:39,949 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 98 flow [2024-02-07 14:25:39,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2024-02-07 14:25:39,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:39,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-07 14:25:39,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:25:39,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:39,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:39,950 INFO L85 PathProgramCache]: Analyzing trace with hash 304000, now seen corresponding path program 1 times [2024-02-07 14:25:39,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312221284] [2024-02-07 14:25:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:40,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:40,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312221284] [2024-02-07 14:25:40,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312221284] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:40,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:40,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763299877] [2024-02-07 14:25:40,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:40,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:40,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:40,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:40,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2024-02-07 14:25:40,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-02-07 14:25:40,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:40,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2024-02-07 14:25:40,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:40,151 INFO L124 PetriNetUnfolderBase]: 35/134 cut-off events. [2024-02-07 14:25:40,151 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-07 14:25:40,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 134 events. 35/134 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 460 event pairs, 5 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 44. Up to 75 conditions per place. [2024-02-07 14:25:40,152 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 25 selfloop transitions, 5 changer transitions 2/44 dead transitions. [2024-02-07 14:25:40,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 158 flow [2024-02-07 14:25:40,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:40,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:40,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-02-07 14:25:40,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-02-07 14:25:40,154 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 98 flow. Second operand 5 states and 125 transitions. [2024-02-07 14:25:40,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 158 flow [2024-02-07 14:25:40,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:40,156 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 86 flow [2024-02-07 14:25:40,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-02-07 14:25:40,156 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-02-07 14:25:40,156 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 86 flow [2024-02-07 14:25:40,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 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) [2024-02-07 14:25:40,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:40,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:40,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:25:40,157 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:40,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1586487269, now seen corresponding path program 1 times [2024-02-07 14:25:40,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:40,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063109183] [2024-02-07 14:25:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:40,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:40,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:40,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063109183] [2024-02-07 14:25:40,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063109183] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:40,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:40,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:40,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604384265] [2024-02-07 14:25:40,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:40,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:40,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:40,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:40,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:40,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-02-07 14:25:40,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-02-07 14:25:40,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:40,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-02-07 14:25:40,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:40,245 INFO L124 PetriNetUnfolderBase]: 30/118 cut-off events. [2024-02-07 14:25:40,246 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-07 14:25:40,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 118 events. 30/118 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 362 event pairs, 30 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 92. Up to 81 conditions per place. [2024-02-07 14:25:40,247 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 20 selfloop transitions, 0 changer transitions 1/36 dead transitions. [2024-02-07 14:25:40,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 36 transitions, 126 flow [2024-02-07 14:25:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:40,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:40,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-02-07 14:25:40,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-02-07 14:25:40,248 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 86 flow. Second operand 3 states and 100 transitions. [2024-02-07 14:25:40,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 36 transitions, 126 flow [2024-02-07 14:25:40,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:40,250 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 72 flow [2024-02-07 14:25:40,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-02-07 14:25:40,250 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2024-02-07 14:25:40,250 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 72 flow [2024-02-07 14:25:40,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-02-07 14:25:40,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:40,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:40,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:25:40,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:40,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:40,252 INFO L85 PathProgramCache]: Analyzing trace with hash -699212823, now seen corresponding path program 1 times [2024-02-07 14:25:40,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:40,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384096284] [2024-02-07 14:25:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:40,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:40,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384096284] [2024-02-07 14:25:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384096284] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:40,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562257441] [2024-02-07 14:25:40,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:40,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:40,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:40,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:40,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2024-02-07 14:25:40,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-02-07 14:25:40,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:40,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2024-02-07 14:25:40,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:40,354 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2024-02-07 14:25:40,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:25:40,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 119 events. 30/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 397 event pairs, 5 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 201. Up to 57 conditions per place. [2024-02-07 14:25:40,355 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 24 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-02-07 14:25:40,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 132 flow [2024-02-07 14:25:40,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-02-07 14:25:40,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6181818181818182 [2024-02-07 14:25:40,356 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 72 flow. Second operand 3 states and 102 transitions. [2024-02-07 14:25:40,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 132 flow [2024-02-07 14:25:40,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:25:40,357 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 74 flow [2024-02-07 14:25:40,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-02-07 14:25:40,358 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2024-02-07 14:25:40,358 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 74 flow [2024-02-07 14:25:40,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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) [2024-02-07 14:25:40,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:40,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:25:40,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:40,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash -200760696, now seen corresponding path program 1 times [2024-02-07 14:25:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:40,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879993905] [2024-02-07 14:25:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879993905] [2024-02-07 14:25:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879993905] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:40,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44671163] [2024-02-07 14:25:40,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:40,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:40,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 55 [2024-02-07 14:25:40,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-02-07 14:25:40,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:40,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 55 [2024-02-07 14:25:40,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:40,502 INFO L124 PetriNetUnfolderBase]: 30/101 cut-off events. [2024-02-07 14:25:40,502 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-07 14:25:40,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 101 events. 30/101 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 255 event pairs, 5 based on Foata normal form. 12/104 useless extension candidates. Maximal degree in co-relation 190. Up to 46 conditions per place. [2024-02-07 14:25:40,503 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 21 selfloop transitions, 4 changer transitions 6/41 dead transitions. [2024-02-07 14:25:40,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 150 flow [2024-02-07 14:25:40,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:25:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:25:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-02-07 14:25:40,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-02-07 14:25:40,505 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 74 flow. Second operand 4 states and 125 transitions. [2024-02-07 14:25:40,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 150 flow [2024-02-07 14:25:40,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:25:40,506 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 68 flow [2024-02-07 14:25:40,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-02-07 14:25:40,507 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -13 predicate places. [2024-02-07 14:25:40,507 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 68 flow [2024-02-07 14:25:40,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2024-02-07 14:25:40,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:40,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:40,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:25:40,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:40,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash -786132112, now seen corresponding path program 1 times [2024-02-07 14:25:40,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:40,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428308102] [2024-02-07 14:25:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:40,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:40,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:40,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428308102] [2024-02-07 14:25:40,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428308102] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:40,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:40,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:25:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708345447] [2024-02-07 14:25:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:40,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:25:40,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:25:40,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:25:40,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-02-07 14:25:40,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2024-02-07 14:25:40,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:40,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-02-07 14:25:40,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:40,779 INFO L124 PetriNetUnfolderBase]: 18/70 cut-off events. [2024-02-07 14:25:40,779 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-07 14:25:40,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 70 events. 18/70 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 15 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 138. Up to 44 conditions per place. [2024-02-07 14:25:40,780 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 17 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2024-02-07 14:25:40,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 114 flow [2024-02-07 14:25:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-02-07 14:25:40,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527272727272727 [2024-02-07 14:25:40,781 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 68 flow. Second operand 5 states and 152 transitions. [2024-02-07 14:25:40,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 114 flow [2024-02-07 14:25:40,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:25:40,782 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 66 flow [2024-02-07 14:25:40,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-02-07 14:25:40,783 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -15 predicate places. [2024-02-07 14:25:40,783 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 66 flow [2024-02-07 14:25:40,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 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) [2024-02-07 14:25:40,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:40,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:40,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:25:40,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:40,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1728997068, now seen corresponding path program 1 times [2024-02-07 14:25:40,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:40,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977164742] [2024-02-07 14:25:40,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:40,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:40,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:40,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:40,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977164742] [2024-02-07 14:25:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977164742] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:40,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:40,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:25:40,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283758586] [2024-02-07 14:25:40,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:40,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:25:40,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:40,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:25:40,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:25:40,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 55 [2024-02-07 14:25:40,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-02-07 14:25:40,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:40,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 55 [2024-02-07 14:25:40,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:40,881 INFO L124 PetriNetUnfolderBase]: 18/69 cut-off events. [2024-02-07 14:25:40,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:25:40,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 69 events. 18/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 18 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 131. Up to 53 conditions per place. [2024-02-07 14:25:40,882 INFO L140 encePairwiseOnDemand]: 53/55 looper letters, 17 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2024-02-07 14:25:40,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 27 transitions, 100 flow [2024-02-07 14:25:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:25:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:25:40,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-02-07 14:25:40,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2024-02-07 14:25:40,883 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 66 flow. Second operand 3 states and 94 transitions. [2024-02-07 14:25:40,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 27 transitions, 100 flow [2024-02-07 14:25:40,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 92 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:25:40,884 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 58 flow [2024-02-07 14:25:40,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2024-02-07 14:25:40,885 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -18 predicate places. [2024-02-07 14:25:40,885 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 58 flow [2024-02-07 14:25:40,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-02-07 14:25:40,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:25:40,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:40,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:25:40,886 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2024-02-07 14:25:40,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:25:40,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2059301882, now seen corresponding path program 1 times [2024-02-07 14:25:40,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:25:40,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781870423] [2024-02-07 14:25:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:25:40,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:25:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:25:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:25:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:25:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781870423] [2024-02-07 14:25:40,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781870423] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:25:40,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:25:40,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:25:40,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702850804] [2024-02-07 14:25:40,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:25:40,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:25:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:25:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:25:40,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:25:40,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2024-02-07 14:25:40,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-02-07 14:25:40,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:25:40,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2024-02-07 14:25:40,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:25:41,026 INFO L124 PetriNetUnfolderBase]: 18/66 cut-off events. [2024-02-07 14:25:41,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:25:41,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 66 events. 18/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 18 based on Foata normal form. 2/68 useless extension candidates. Maximal degree in co-relation 122. Up to 52 conditions per place. [2024-02-07 14:25:41,027 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-02-07 14:25:41,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 88 flow [2024-02-07 14:25:41,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:25:41,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:25:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-02-07 14:25:41,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-02-07 14:25:41,028 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 58 flow. Second operand 5 states and 115 transitions. [2024-02-07 14:25:41,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 88 flow [2024-02-07 14:25:41,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:25:41,028 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2024-02-07 14:25:41,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2024-02-07 14:25:41,031 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -18 predicate places. [2024-02-07 14:25:41,031 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2024-02-07 14:25:41,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-02-07 14:25:41,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 17 remaining) [2024-02-07 14:25:41,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 17 remaining) [2024-02-07 14:25:41,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (14 of 17 remaining) [2024-02-07 14:25:41,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 17 remaining) [2024-02-07 14:25:41,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 17 remaining) [2024-02-07 14:25:41,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (11 of 17 remaining) [2024-02-07 14:25:41,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 17 remaining) [2024-02-07 14:25:41,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 17 remaining) [2024-02-07 14:25:41,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (8 of 17 remaining) [2024-02-07 14:25:41,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 17 remaining) [2024-02-07 14:25:41,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 17 remaining) [2024-02-07 14:25:41,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 17 remaining) [2024-02-07 14:25:41,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (4 of 17 remaining) [2024-02-07 14:25:41,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 17 remaining) [2024-02-07 14:25:41,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 17 remaining) [2024-02-07 14:25:41,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 17 remaining) [2024-02-07 14:25:41,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 17 remaining) [2024-02-07 14:25:41,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:25:41,042 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:25:41,046 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:25:41,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:25:41,052 INFO L503 ceAbstractionStarter]: Automizer considered 9 witness invariants [2024-02-07 14:25:41,052 INFO L504 ceAbstractionStarter]: WitnessConsidered=9 [2024-02-07 14:25:41,053 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:25:41 BasicIcfg [2024-02-07 14:25:41,053 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:25:41,053 INFO L158 Benchmark]: Toolchain (without parser) took 3055.32ms. Allocated memory was 161.5MB in the beginning and 247.5MB in the end (delta: 86.0MB). Free memory was 130.4MB in the beginning and 127.6MB in the end (delta: 2.8MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. [2024-02-07 14:25:41,053 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:41,054 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 161.5MB. Free memory is still 133.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:25:41,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 693.53ms. Allocated memory is still 161.5MB. Free memory was 130.4MB in the beginning and 66.8MB in the end (delta: 63.6MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-02-07 14:25:41,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.91ms. Allocated memory is still 161.5MB. Free memory was 66.8MB in the beginning and 64.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:25:41,055 INFO L158 Benchmark]: Boogie Preprocessor took 43.89ms. Allocated memory is still 161.5MB. Free memory was 64.0MB in the beginning and 59.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-07 14:25:41,056 INFO L158 Benchmark]: RCFGBuilder took 590.50ms. Allocated memory is still 161.5MB. Free memory was 59.9MB in the beginning and 100.8MB in the end (delta: -40.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2024-02-07 14:25:41,057 INFO L158 Benchmark]: TraceAbstraction took 1676.00ms. Allocated memory was 161.5MB in the beginning and 247.5MB in the end (delta: 86.0MB). Free memory was 99.8MB in the beginning and 127.6MB in the end (delta: -27.7MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2024-02-07 14:25:41,058 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 161.5MB. Free memory is still 136.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 161.5MB. Free memory is still 133.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 693.53ms. Allocated memory is still 161.5MB. Free memory was 130.4MB in the beginning and 66.8MB in the end (delta: 63.6MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.91ms. Allocated memory is still 161.5MB. Free memory was 66.8MB in the beginning and 64.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.89ms. Allocated memory is still 161.5MB. Free memory was 64.0MB in the beginning and 59.9MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 590.50ms. Allocated memory is still 161.5MB. Free memory was 59.9MB in the beginning and 100.8MB in the end (delta: -40.9MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1676.00ms. Allocated memory was 161.5MB in the beginning and 247.5MB in the end (delta: 86.0MB). Free memory was 99.8MB in the beginning and 127.6MB in the end (delta: -27.7MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1700]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1707]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1713]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1720]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1722]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 65 locations, 17 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: 1.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 233 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 513 IncrementalHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 57 mSDtfsCounter, 513 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=0, InterpolantAutomatonStates: 31, 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, 0.6s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:25:41,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE