./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/lazy01.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27552612 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.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-2755261-m [2024-01-26 15:10:06,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-26 15:10:06,285 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-26 15:10:06,290 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-26 15:10:06,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-26 15:10:06,316 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-26 15:10:06,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-26 15:10:06,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-26 15:10:06,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-26 15:10:06,322 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-26 15:10:06,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-26 15:10:06,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-26 15:10:06,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-26 15:10:06,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-26 15:10:06,325 INFO L153 SettingsManager]: * Use SBE=true [2024-01-26 15:10:06,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-26 15:10:06,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-26 15:10:06,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-26 15:10:06,326 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-26 15:10:06,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-26 15:10:06,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-26 15:10:06,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-26 15:10:06,327 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-26 15:10:06,327 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-26 15:10:06,327 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-26 15:10:06,327 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-26 15:10:06,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-26 15:10:06,328 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-26 15:10:06,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-26 15:10:06,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-26 15:10:06,329 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-26 15:10:06,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-26 15:10:06,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:10:06,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-26 15:10:06,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-26 15:10:06,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-26 15:10:06,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-26 15:10:06,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-26 15:10:06,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-26 15:10:06,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-26 15:10:06,331 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-26 15:10:06,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-26 15:10:06,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-26 15:10:06,332 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-26 15:10:06,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-26 15:10:06,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-26 15:10:06,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-26 15:10:06,556 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-26 15:10:06,557 INFO L274 PluginConnector]: CDTParser initialized [2024-01-26 15:10:06,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2024-01-26 15:10:07,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-26 15:10:07,885 INFO L384 CDTParser]: Found 1 translation units. [2024-01-26 15:10:07,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2024-01-26 15:10:07,907 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eddfb80ef/4d528bb864d84f26a51eb0cf65fb51e6/FLAG17f1eefde [2024-01-26 15:10:07,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eddfb80ef/4d528bb864d84f26a51eb0cf65fb51e6 [2024-01-26 15:10:07,923 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-26 15:10:07,923 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-26 15:10:07,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/lazy01.yml/witness.yml [2024-01-26 15:10:08,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-26 15:10:08,003 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-26 15:10:08,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-26 15:10:08,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-26 15:10:08,019 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-26 15:10:08,020 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:10:07" (1/2) ... [2024-01-26 15:10:08,020 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3cdb48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:10:08, skipping insertion in model container [2024-01-26 15:10:08,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:10:07" (1/2) ... [2024-01-26 15:10:08,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@788996c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:10:08, skipping insertion in model container [2024-01-26 15:10:08,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:10:08" (2/2) ... [2024-01-26 15:10:08,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3cdb48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08, skipping insertion in model container [2024-01-26 15:10:08,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:10:08" (2/2) ... [2024-01-26 15:10:08,022 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-26 15:10:08,046 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-26 15:10:08,060 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] (unsigned long )arg == 0UL [2024-01-26 15:10:08,060 INFO L98 nessWitnessExtractor]: Location invariant before [L708-L708] 1 <= data [2024-01-26 15:10:08,060 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] (unsigned long )arg == 0UL [2024-01-26 15:10:08,060 INFO L98 nessWitnessExtractor]: Location invariant before [L707-L707] 0 <= data [2024-01-26 15:10:08,060 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-26 15:10:08,061 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] 0 <= data [2024-01-26 15:10:08,061 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] data <= 2 [2024-01-26 15:10:08,061 INFO L98 nessWitnessExtractor]: Location invariant before [L713-L713] (unsigned long )arg == 0UL [2024-01-26 15:10:08,061 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] 0 <= data [2024-01-26 15:10:08,061 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (unsigned long )arg == 0UL [2024-01-26 15:10:08,061 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] 2 <= data [2024-01-26 15:10:08,062 INFO L98 nessWitnessExtractor]: Location invariant before [L715-L715] (unsigned long )arg == 0UL [2024-01-26 15:10:08,062 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] data == 0 [2024-01-26 15:10:08,062 INFO L98 nessWitnessExtractor]: Location invariant before [L709-L709] (unsigned long )arg == 0UL [2024-01-26 15:10:08,062 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] 3 <= data [2024-01-26 15:10:08,062 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-01-26 15:10:08,062 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] data != 0 [2024-01-26 15:10:08,062 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-26 15:10:08,063 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-01-26 15:10:08,063 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (unsigned long )arg == 0UL [2024-01-26 15:10:08,063 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L724] 0 <= data [2024-01-26 15:10:08,063 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L724] (unsigned long )arg == 0UL [2024-01-26 15:10:08,063 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] data == 0 [2024-01-26 15:10:08,064 INFO L98 nessWitnessExtractor]: Location invariant before [L716-L716] (unsigned long )arg == 0UL [2024-01-26 15:10:08,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-26 15:10:08,331 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] [2024-01-26 15:10:08,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:10:08,355 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-26 15:10:08,432 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i[31042,31055] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-26 15:10:08,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:10:08,475 INFO L206 MainTranslator]: Completed translation [2024-01-26 15:10:08,475 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08 WrapperNode [2024-01-26 15:10:08,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-26 15:10:08,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-26 15:10:08,476 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-26 15:10:08,476 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-26 15:10:08,481 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 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,489 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 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,505 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2024-01-26 15:10:08,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-26 15:10:08,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-26 15:10:08,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-26 15:10:08,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-26 15:10:08,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,546 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 5, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 1, 1, 1]. [2024-01-26 15:10:08,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-26 15:10:08,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-26 15:10:08,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-26 15:10:08,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-26 15:10:08,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (1/1) ... [2024-01-26 15:10:08,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:10:08,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-26 15:10:08,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-26 15:10:08,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-26 15:10:08,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-26 15:10:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-26 15:10:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-26 15:10:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-26 15:10:08,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-26 15:10:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-26 15:10:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-26 15:10:08,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-26 15:10:08,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-26 15:10:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-26 15:10:08,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-26 15:10:08,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-26 15:10:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-26 15:10:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-26 15:10:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-26 15:10:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-26 15:10:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-26 15:10:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-26 15:10:08,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-26 15:10:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-26 15:10:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-26 15:10:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-26 15:10:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-26 15:10:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-26 15:10:08,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-26 15:10:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-26 15:10:08,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-26 15:10:08,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-26 15:10:08,641 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-26 15:10:08,740 INFO L244 CfgBuilder]: Building ICFG [2024-01-26 15:10:08,758 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-26 15:10:08,947 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-26 15:10:08,948 INFO L293 CfgBuilder]: Performing block encoding [2024-01-26 15:10:09,044 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-26 15:10:09,045 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-26 15:10:09,045 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:10:09 BoogieIcfgContainer [2024-01-26 15:10:09,045 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-26 15:10:09,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-26 15:10:09,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-26 15:10:09,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-26 15:10:09,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 03:10:07" (1/4) ... [2024-01-26 15:10:09,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a1cb9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:10:09, skipping insertion in model container [2024-01-26 15:10:09,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:10:08" (2/4) ... [2024-01-26 15:10:09,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a1cb9e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 26.01 03:10:09, skipping insertion in model container [2024-01-26 15:10:09,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:10:08" (3/4) ... [2024-01-26 15:10:09,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a1cb9e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 26.01 03:10:09, skipping insertion in model container [2024-01-26 15:10:09,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:10:09" (4/4) ... [2024-01-26 15:10:09,052 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2024-01-26 15:10:09,066 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-26 15:10:09,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2024-01-26 15:10:09,066 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-26 15:10:09,144 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-26 15:10:09,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 83 transitions, 187 flow [2024-01-26 15:10:09,226 INFO L124 PetriNetUnfolderBase]: 1/80 cut-off events. [2024-01-26 15:10:09,226 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-26 15:10:09,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 80 events. 1/80 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 224 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-01-26 15:10:09,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 83 transitions, 187 flow [2024-01-26 15:10:09,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 78 transitions, 171 flow [2024-01-26 15:10:09,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-26 15:10:09,254 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;@6abf236a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 15:10:09,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-01-26 15:10:09,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-26 15:10:09,258 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-26 15:10:09,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:10:09,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:09,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-26 15:10:09,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:09,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:09,263 INFO L85 PathProgramCache]: Analyzing trace with hash 9158, now seen corresponding path program 1 times [2024-01-26 15:10:09,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:09,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662293226] [2024-01-26 15:10:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:09,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:09,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662293226] [2024-01-26 15:10:09,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662293226] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:09,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-26 15:10:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258194559] [2024-01-26 15:10:09,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:09,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:10:09,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:09,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:10:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:10:09,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-01-26 15:10:09,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:09,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:09,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-01-26 15:10:09,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:10,117 INFO L124 PetriNetUnfolderBase]: 2325/4654 cut-off events. [2024-01-26 15:10:10,117 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2024-01-26 15:10:10,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8412 conditions, 4654 events. 2325/4654 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 38631 event pairs, 1173 based on Foata normal form. 171/4303 useless extension candidates. Maximal degree in co-relation 7366. Up to 3231 conditions per place. [2024-01-26 15:10:10,152 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 51 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2024-01-26 15:10:10,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 327 flow [2024-01-26 15:10:10,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:10:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:10:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-01-26 15:10:10,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7831325301204819 [2024-01-26 15:10:10,164 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 171 flow. Second operand 3 states and 195 transitions. [2024-01-26 15:10:10,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 327 flow [2024-01-26 15:10:10,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 311 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-26 15:10:10,175 INFO L231 Difference]: Finished difference. Result has 83 places, 77 transitions, 192 flow [2024-01-26 15:10:10,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=83, PETRI_TRANSITIONS=77} [2024-01-26 15:10:10,180 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -4 predicate places. [2024-01-26 15:10:10,181 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 77 transitions, 192 flow [2024-01-26 15:10:10,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:10,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:10,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-26 15:10:10,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-26 15:10:10,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:10,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash -122850908, now seen corresponding path program 1 times [2024-01-26 15:10:10,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:10,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491364569] [2024-01-26 15:10:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:10,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:10,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:10,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491364569] [2024-01-26 15:10:10,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491364569] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:10,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:10,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:10:10,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638779369] [2024-01-26 15:10:10,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:10:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:10,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:10:10,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:10:10,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-01-26 15:10:10,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 77 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:10,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:10,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-01-26 15:10:10,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:10,691 INFO L124 PetriNetUnfolderBase]: 1095/2888 cut-off events. [2024-01-26 15:10:10,692 INFO L125 PetriNetUnfolderBase]: For 263/387 co-relation queries the response was YES. [2024-01-26 15:10:10,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 2888 events. 1095/2888 cut-off events. For 263/387 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 25587 event pairs, 385 based on Foata normal form. 226/2803 useless extension candidates. Maximal degree in co-relation 2261. Up to 1332 conditions per place. [2024-01-26 15:10:10,710 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 37 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-26 15:10:10,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 85 transitions, 292 flow [2024-01-26 15:10:10,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:10:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:10:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 245 transitions. [2024-01-26 15:10:10,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7379518072289156 [2024-01-26 15:10:10,717 INFO L175 Difference]: Start difference. First operand has 83 places, 77 transitions, 192 flow. Second operand 4 states and 245 transitions. [2024-01-26 15:10:10,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 85 transitions, 292 flow [2024-01-26 15:10:10,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-26 15:10:10,725 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 184 flow [2024-01-26 15:10:10,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-01-26 15:10:10,726 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -6 predicate places. [2024-01-26 15:10:10,726 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 184 flow [2024-01-26 15:10:10,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:10,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:10,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:10,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-26 15:10:10,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:10,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2097258910, now seen corresponding path program 1 times [2024-01-26 15:10:10,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:10,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621361110] [2024-01-26 15:10:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:10,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621361110] [2024-01-26 15:10:10,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621361110] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:10,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:10,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:10:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108236523] [2024-01-26 15:10:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:10,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:10:10,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:10:10,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:10:10,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-01-26 15:10:10,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:10,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:10,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-01-26 15:10:10,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:11,147 INFO L124 PetriNetUnfolderBase]: 1256/3329 cut-off events. [2024-01-26 15:10:11,148 INFO L125 PetriNetUnfolderBase]: For 246/300 co-relation queries the response was YES. [2024-01-26 15:10:11,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5916 conditions, 3329 events. 1256/3329 cut-off events. For 246/300 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29930 event pairs, 779 based on Foata normal form. 246/3174 useless extension candidates. Maximal degree in co-relation 5899. Up to 1476 conditions per place. [2024-01-26 15:10:11,173 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 41 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-26 15:10:11,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 301 flow [2024-01-26 15:10:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:10:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:10:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-01-26 15:10:11,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-26 15:10:11,176 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 184 flow. Second operand 4 states and 249 transitions. [2024-01-26 15:10:11,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 301 flow [2024-01-26 15:10:11,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:10:11,179 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 177 flow [2024-01-26 15:10:11,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-01-26 15:10:11,180 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -9 predicate places. [2024-01-26 15:10:11,180 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 177 flow [2024-01-26 15:10:11,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:11,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:11,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:11,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-26 15:10:11,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:11,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:11,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1128210920, now seen corresponding path program 1 times [2024-01-26 15:10:11,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:11,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165915360] [2024-01-26 15:10:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:11,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:11,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165915360] [2024-01-26 15:10:11,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165915360] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:11,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:11,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:10:11,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028914649] [2024-01-26 15:10:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:11,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:10:11,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:10:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:10:11,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 83 [2024-01-26 15:10:11,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:11,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:11,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 83 [2024-01-26 15:10:11,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:11,533 INFO L124 PetriNetUnfolderBase]: 1312/3452 cut-off events. [2024-01-26 15:10:11,533 INFO L125 PetriNetUnfolderBase]: For 280/332 co-relation queries the response was YES. [2024-01-26 15:10:11,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6134 conditions, 3452 events. 1312/3452 cut-off events. For 280/332 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 30741 event pairs, 371 based on Foata normal form. 292/3431 useless extension candidates. Maximal degree in co-relation 6118. Up to 1218 conditions per place. [2024-01-26 15:10:11,551 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 50 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-01-26 15:10:11,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 89 transitions, 339 flow [2024-01-26 15:10:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:10:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:10:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 251 transitions. [2024-01-26 15:10:11,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7560240963855421 [2024-01-26 15:10:11,553 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 177 flow. Second operand 4 states and 251 transitions. [2024-01-26 15:10:11,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 89 transitions, 339 flow [2024-01-26 15:10:11,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 89 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:10:11,555 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 168 flow [2024-01-26 15:10:11,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-01-26 15:10:11,556 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -13 predicate places. [2024-01-26 15:10:11,556 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 168 flow [2024-01-26 15:10:11,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:11,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:11,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:11,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-26 15:10:11,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:11,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:11,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1777074926, now seen corresponding path program 1 times [2024-01-26 15:10:11,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:11,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493040112] [2024-01-26 15:10:11,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:11,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:11,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493040112] [2024-01-26 15:10:11,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493040112] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:11,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:11,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:10:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722476540] [2024-01-26 15:10:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:11,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:10:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:10:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:10:11,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 83 [2024-01-26 15:10:11,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:11,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:11,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 83 [2024-01-26 15:10:11,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:11,824 INFO L124 PetriNetUnfolderBase]: 1405/2702 cut-off events. [2024-01-26 15:10:11,825 INFO L125 PetriNetUnfolderBase]: For 676/824 co-relation queries the response was YES. [2024-01-26 15:10:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5569 conditions, 2702 events. 1405/2702 cut-off events. For 676/824 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 19505 event pairs, 611 based on Foata normal form. 414/3054 useless extension candidates. Maximal degree in co-relation 5553. Up to 2050 conditions per place. [2024-01-26 15:10:11,856 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 39 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-01-26 15:10:11,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 255 flow [2024-01-26 15:10:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:10:11,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:10:11,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 216 transitions. [2024-01-26 15:10:11,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6506024096385542 [2024-01-26 15:10:11,858 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 168 flow. Second operand 4 states and 216 transitions. [2024-01-26 15:10:11,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 255 flow [2024-01-26 15:10:11,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 68 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:10:11,860 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 149 flow [2024-01-26 15:10:11,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2024-01-26 15:10:11,861 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -18 predicate places. [2024-01-26 15:10:11,861 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 149 flow [2024-01-26 15:10:11,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:11,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:11,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:11,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-26 15:10:11,861 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:11,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 22950087, now seen corresponding path program 1 times [2024-01-26 15:10:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692096615] [2024-01-26 15:10:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:11,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:11,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692096615] [2024-01-26 15:10:11,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692096615] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:11,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:11,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:10:11,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139093733] [2024-01-26 15:10:11,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:11,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:10:11,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:10:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:10:11,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-01-26 15:10:11,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:11,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:11,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-01-26 15:10:11,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:12,120 INFO L124 PetriNetUnfolderBase]: 1405/2615 cut-off events. [2024-01-26 15:10:12,120 INFO L125 PetriNetUnfolderBase]: For 500/558 co-relation queries the response was YES. [2024-01-26 15:10:12,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 2615 events. 1405/2615 cut-off events. For 500/558 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17644 event pairs, 227 based on Foata normal form. 130/2693 useless extension candidates. Maximal degree in co-relation 5472. Up to 1782 conditions per place. [2024-01-26 15:10:12,132 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 45 selfloop transitions, 6 changer transitions 7/82 dead transitions. [2024-01-26 15:10:12,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 82 transitions, 325 flow [2024-01-26 15:10:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:10:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:10:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 222 transitions. [2024-01-26 15:10:12,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6686746987951807 [2024-01-26 15:10:12,134 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 149 flow. Second operand 4 states and 222 transitions. [2024-01-26 15:10:12,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 82 transitions, 325 flow [2024-01-26 15:10:12,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:10:12,137 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 172 flow [2024-01-26 15:10:12,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-01-26 15:10:12,139 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -17 predicate places. [2024-01-26 15:10:12,139 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 172 flow [2024-01-26 15:10:12,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:12,140 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] [2024-01-26 15:10:12,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-26 15:10:12,140 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:12,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1296645782, now seen corresponding path program 1 times [2024-01-26 15:10:12,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:12,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813603779] [2024-01-26 15:10:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:12,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:12,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813603779] [2024-01-26 15:10:12,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813603779] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:12,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:12,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:10:12,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994329390] [2024-01-26 15:10:12,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:12,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:10:12,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:12,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:10:12,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:10:12,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2024-01-26 15:10:12,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:12,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2024-01-26 15:10:12,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:12,307 INFO L124 PetriNetUnfolderBase]: 139/766 cut-off events. [2024-01-26 15:10:12,308 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-01-26 15:10:12,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 766 events. 139/766 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5138 event pairs, 40 based on Foata normal form. 58/780 useless extension candidates. Maximal degree in co-relation 1294. Up to 173 conditions per place. [2024-01-26 15:10:12,311 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 30 selfloop transitions, 5 changer transitions 0/67 dead transitions. [2024-01-26 15:10:12,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 263 flow [2024-01-26 15:10:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:10:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:10:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2024-01-26 15:10:12,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8192771084337349 [2024-01-26 15:10:12,312 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 172 flow. Second operand 3 states and 204 transitions. [2024-01-26 15:10:12,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 263 flow [2024-01-26 15:10:12,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 256 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-26 15:10:12,315 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 169 flow [2024-01-26 15:10:12,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-01-26 15:10:12,317 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -19 predicate places. [2024-01-26 15:10:12,317 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 169 flow [2024-01-26 15:10:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:12,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:12,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-26 15:10:12,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:12,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:12,322 INFO L85 PathProgramCache]: Analyzing trace with hash -688173972, now seen corresponding path program 1 times [2024-01-26 15:10:12,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:12,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010183158] [2024-01-26 15:10:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:12,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:12,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010183158] [2024-01-26 15:10:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010183158] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:12,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:12,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:10:12,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121061554] [2024-01-26 15:10:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:10:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:10:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:10:12,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-01-26 15:10:12,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:12,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-01-26 15:10:12,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:12,483 INFO L124 PetriNetUnfolderBase]: 291/819 cut-off events. [2024-01-26 15:10:12,483 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2024-01-26 15:10:12,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 819 events. 291/819 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4821 event pairs, 133 based on Foata normal form. 24/790 useless extension candidates. Maximal degree in co-relation 1616. Up to 353 conditions per place. [2024-01-26 15:10:12,486 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 37 selfloop transitions, 4 changer transitions 6/69 dead transitions. [2024-01-26 15:10:12,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 287 flow [2024-01-26 15:10:12,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:10:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:10:12,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-01-26 15:10:12,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987951807228916 [2024-01-26 15:10:12,488 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 169 flow. Second operand 3 states and 174 transitions. [2024-01-26 15:10:12,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 287 flow [2024-01-26 15:10:12,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 275 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-26 15:10:12,490 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 147 flow [2024-01-26 15:10:12,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-01-26 15:10:12,492 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -19 predicate places. [2024-01-26 15:10:12,492 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 147 flow [2024-01-26 15:10:12,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:12,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:12,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-26 15:10:12,493 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:12,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:12,493 INFO L85 PathProgramCache]: Analyzing trace with hash -519039825, now seen corresponding path program 1 times [2024-01-26 15:10:12,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:12,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862721467] [2024-01-26 15:10:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:12,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:12,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:12,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862721467] [2024-01-26 15:10:12,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862721467] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:12,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:12,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-26 15:10:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686117130] [2024-01-26 15:10:12,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:12,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:10:12,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:12,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:10:12,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:10:12,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-01-26 15:10:12,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:12,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-01-26 15:10:12,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:12,623 INFO L124 PetriNetUnfolderBase]: 199/563 cut-off events. [2024-01-26 15:10:12,624 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-01-26 15:10:12,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1173 conditions, 563 events. 199/563 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3103 event pairs, 131 based on Foata normal form. 24/529 useless extension candidates. Maximal degree in co-relation 1153. Up to 275 conditions per place. [2024-01-26 15:10:12,626 INFO L140 encePairwiseOnDemand]: 81/83 looper letters, 32 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-01-26 15:10:12,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 227 flow [2024-01-26 15:10:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:10:12,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:10:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 161 transitions. [2024-01-26 15:10:12,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6465863453815262 [2024-01-26 15:10:12,628 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 147 flow. Second operand 3 states and 161 transitions. [2024-01-26 15:10:12,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 227 flow [2024-01-26 15:10:12,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:10:12,629 INFO L231 Difference]: Finished difference. Result has 63 places, 49 transitions, 141 flow [2024-01-26 15:10:12,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2024-01-26 15:10:12,630 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -24 predicate places. [2024-01-26 15:10:12,631 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 141 flow [2024-01-26 15:10:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:12,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:12,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-26 15:10:12,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err6ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:12,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:12,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1512500682, now seen corresponding path program 1 times [2024-01-26 15:10:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:12,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046936967] [2024-01-26 15:10:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:12,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:12,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:12,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046936967] [2024-01-26 15:10:12,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046936967] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:12,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:12,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:10:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515462899] [2024-01-26 15:10:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:10:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:10:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:10:12,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-01-26 15:10:12,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 49 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:12,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-01-26 15:10:12,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:12,799 INFO L124 PetriNetUnfolderBase]: 241/649 cut-off events. [2024-01-26 15:10:12,799 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-01-26 15:10:12,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 649 events. 241/649 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3309 event pairs, 71 based on Foata normal form. 4/642 useless extension candidates. Maximal degree in co-relation 1303. Up to 349 conditions per place. [2024-01-26 15:10:12,802 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 40 selfloop transitions, 4 changer transitions 2/65 dead transitions. [2024-01-26 15:10:12,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 271 flow [2024-01-26 15:10:12,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:10:12,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:10:12,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 211 transitions. [2024-01-26 15:10:12,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355421686746988 [2024-01-26 15:10:12,803 INFO L175 Difference]: Start difference. First operand has 63 places, 49 transitions, 141 flow. Second operand 4 states and 211 transitions. [2024-01-26 15:10:12,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 271 flow [2024-01-26 15:10:12,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-26 15:10:12,806 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 141 flow [2024-01-26 15:10:12,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2024-01-26 15:10:12,807 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -22 predicate places. [2024-01-26 15:10:12,807 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 141 flow [2024-01-26 15:10:12,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:12,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:12,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-26 15:10:12,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err6ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:12,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash 51860289, now seen corresponding path program 1 times [2024-01-26 15:10:12,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:12,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407536469] [2024-01-26 15:10:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:12,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:10:12,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-26 15:10:12,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:10:12,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407536469] [2024-01-26 15:10:12,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407536469] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:10:12,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:10:12,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:10:12,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826352747] [2024-01-26 15:10:12,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:10:12,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:10:12,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:10:12,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:10:12,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:10:12,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 83 [2024-01-26 15:10:12,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:10:12,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 83 [2024-01-26 15:10:12,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:10:12,961 INFO L124 PetriNetUnfolderBase]: 229/617 cut-off events. [2024-01-26 15:10:12,961 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2024-01-26 15:10:12,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 617 events. 229/617 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3096 event pairs, 57 based on Foata normal form. 4/609 useless extension candidates. Maximal degree in co-relation 1255. Up to 271 conditions per place. [2024-01-26 15:10:12,963 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 42 selfloop transitions, 5 changer transitions 2/68 dead transitions. [2024-01-26 15:10:12,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 291 flow [2024-01-26 15:10:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:10:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:10:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-01-26 15:10:12,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.608433734939759 [2024-01-26 15:10:12,965 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 141 flow. Second operand 4 states and 202 transitions. [2024-01-26 15:10:12,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 291 flow [2024-01-26 15:10:12,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-26 15:10:12,966 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 148 flow [2024-01-26 15:10:12,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2024-01-26 15:10:12,967 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, -21 predicate places. [2024-01-26 15:10:12,967 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 148 flow [2024-01-26 15:10:12,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:10:12,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:10:12,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:12,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-26 15:10:12,968 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err6ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-01-26 15:10:12,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:10:12,968 INFO L85 PathProgramCache]: Analyzing trace with hash 745437818, now seen corresponding path program 1 times [2024-01-26 15:10:12,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:10:12,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105974081] [2024-01-26 15:10:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:10:12,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:10:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:10:12,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 15:10:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:10:13,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 15:10:13,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 15:10:13,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err6ASSERT_VIOLATIONERROR_FUNCTION (50 of 51 remaining) [2024-01-26 15:10:13,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 51 remaining) [2024-01-26 15:10:13,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 51 remaining) [2024-01-26 15:10:13,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 51 remaining) [2024-01-26 15:10:13,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 51 remaining) [2024-01-26 15:10:13,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 51 remaining) [2024-01-26 15:10:13,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 51 remaining) [2024-01-26 15:10:13,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 51 remaining) [2024-01-26 15:10:13,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 51 remaining) [2024-01-26 15:10:13,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 51 remaining) [2024-01-26 15:10:13,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 51 remaining) [2024-01-26 15:10:13,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 51 remaining) [2024-01-26 15:10:13,034 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err8ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 51 remaining) [2024-01-26 15:10:13,035 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 51 remaining) [2024-01-26 15:10:13,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err9ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 51 remaining) [2024-01-26 15:10:13,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err6ASSERT_VIOLATIONERROR_FUNCTION (28 of 51 remaining) [2024-01-26 15:10:13,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err10ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 51 remaining) [2024-01-26 15:10:13,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 51 remaining) [2024-01-26 15:10:13,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 51 remaining) [2024-01-26 15:10:13,036 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 51 remaining) [2024-01-26 15:10:13,037 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 51 remaining) [2024-01-26 15:10:13,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 51 remaining) [2024-01-26 15:10:13,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 51 remaining) [2024-01-26 15:10:13,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 51 remaining) [2024-01-26 15:10:13,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 51 remaining) [2024-01-26 15:10:13,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 51 remaining) [2024-01-26 15:10:13,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 51 remaining) [2024-01-26 15:10:13,038 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 51 remaining) [2024-01-26 15:10:13,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 51 remaining) [2024-01-26 15:10:13,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 51 remaining) [2024-01-26 15:10:13,039 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 51 remaining) [2024-01-26 15:10:13,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 51 remaining) [2024-01-26 15:10:13,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 51 remaining) [2024-01-26 15:10:13,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 51 remaining) [2024-01-26 15:10:13,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 51 remaining) [2024-01-26 15:10:13,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err9ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 51 remaining) [2024-01-26 15:10:13,040 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err10ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 51 remaining) [2024-01-26 15:10:13,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-26 15:10:13,041 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:10:13,046 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-26 15:10:13,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-26 15:10:13,103 INFO L503 ceAbstractionStarter]: Automizer considered 24 witness invariants [2024-01-26 15:10:13,104 INFO L504 ceAbstractionStarter]: WitnessConsidered=24 [2024-01-26 15:10:13,104 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.01 03:10:13 BasicIcfg [2024-01-26 15:10:13,104 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-26 15:10:13,105 INFO L158 Benchmark]: Toolchain (without parser) took 5101.92ms. Allocated memory was 134.2MB in the beginning and 423.6MB in the end (delta: 289.4MB). Free memory was 103.5MB in the beginning and 141.5MB in the end (delta: -38.0MB). Peak memory consumption was 252.4MB. Max. memory is 16.1GB. [2024-01-26 15:10:13,105 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 134.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-26 15:10:13,105 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-26 15:10:13,105 INFO L158 Benchmark]: CACSL2BoogieTranslator took 459.63ms. Allocated memory is still 195.0MB. Free memory was 168.0MB in the beginning and 143.9MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-01-26 15:10:13,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.80ms. Allocated memory is still 195.0MB. Free memory was 143.9MB in the beginning and 142.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-26 15:10:13,106 INFO L158 Benchmark]: Boogie Preprocessor took 56.44ms. Allocated memory is still 195.0MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-26 15:10:13,106 INFO L158 Benchmark]: RCFGBuilder took 482.15ms. Allocated memory is still 195.0MB. Free memory was 139.7MB in the beginning and 111.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-26 15:10:13,106 INFO L158 Benchmark]: TraceAbstraction took 4057.85ms. Allocated memory was 195.0MB in the beginning and 423.6MB in the end (delta: 228.6MB). Free memory was 110.4MB in the beginning and 141.5MB in the end (delta: -31.1MB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. [2024-01-26 15:10:13,107 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 134.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 459.63ms. Allocated memory is still 195.0MB. Free memory was 168.0MB in the beginning and 143.9MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.80ms. Allocated memory is still 195.0MB. Free memory was 143.9MB in the beginning and 142.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.44ms. Allocated memory is still 195.0MB. Free memory was 141.8MB in the beginning and 139.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.15ms. Allocated memory is still 195.0MB. Free memory was 139.7MB in the beginning and 111.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4057.85ms. Allocated memory was 195.0MB in the beginning and 423.6MB in the end (delta: 228.6MB). Free memory was 110.4MB in the beginning and 141.5MB in the end (delta: -31.1MB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L730] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data],IntegerLiteral[0]]]] [L731] 0 pthread_t t1, t2, t3; VAL [data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L732] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[data],IntegerLiteral[0]]]] [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L706] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L707] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, data=0, mutex={3:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={7:0}, t2={5:0}, t3={6:0}] [L707] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L708] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L713] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L715] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[2],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L720] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPNEQ,IdentifierExpression[data],IntegerLiteral[0]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[3],IdentifierExpression[data]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L722] 3 reach_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: 706]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 151 locations, 51 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: 3.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 667 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 443 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 966 IncrementalHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 122 mSolverCounterUnsat, 54 mSDtfsCounter, 966 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=192occurred in iteration=1, InterpolantAutomatonStates: 40, 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, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be incorrect! [2024-01-26 15:10:13,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE