./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.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-ext/35_double_lock_p3_vs-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/35_double_lock_p3_vs-pthread.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-2755261-m [2024-01-26 15:11:20,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-26 15:11:20,579 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-26 15:11:20,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-26 15:11:20,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-26 15:11:20,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-26 15:11:20,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-26 15:11:20,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-26 15:11:20,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-26 15:11:20,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-26 15:11:20,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-26 15:11:20,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-26 15:11:20,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-26 15:11:20,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-26 15:11:20,617 INFO L153 SettingsManager]: * Use SBE=true [2024-01-26 15:11:20,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-26 15:11:20,618 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-26 15:11:20,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-26 15:11:20,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-26 15:11:20,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-26 15:11:20,619 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-26 15:11:20,619 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-26 15:11:20,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-26 15:11:20,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-26 15:11:20,620 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-26 15:11:20,620 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-26 15:11:20,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-26 15:11:20,620 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-26 15:11:20,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-26 15:11:20,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-26 15:11:20,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-26 15:11:20,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-26 15:11:20,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:11:20,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-26 15:11:20,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-26 15:11:20,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-26 15:11:20,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-26 15:11:20,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-26 15:11:20,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-26 15:11:20,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-26 15:11:20,623 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-26 15:11:20,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-26 15:11:20,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-26 15:11:20,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-26 15:11:20,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-26 15:11:20,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-26 15:11:20,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-26 15:11:20,862 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-26 15:11:20,862 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-26 15:11:20,863 INFO L431 ainManager$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/35_double_lock_p3_vs-pthread.yml/witness.yml [2024-01-26 15:11:21,003 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-26 15:11:21,018 INFO L274 PluginConnector]: CDTParser initialized [2024-01-26 15:11:21,019 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-01-26 15:11:22,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-26 15:11:22,423 INFO L384 CDTParser]: Found 1 translation units. [2024-01-26 15:11:22,423 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i [2024-01-26 15:11:22,445 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d4f6353/3228adf5c6a748b08acd4310b8fe5c50/FLAG218dddbe1 [2024-01-26 15:11:22,752 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d4f6353/3228adf5c6a748b08acd4310b8fe5c50 [2024-01-26 15:11:22,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-26 15:11:22,754 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-26 15:11:22,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-26 15:11:22,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-26 15:11:22,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-26 15:11:22,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:11:21" (1/2) ... [2024-01-26 15:11:22,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2717dde8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:22, skipping insertion in model container [2024-01-26 15:11:22,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:11:21" (1/2) ... [2024-01-26 15:11:22,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3abec460 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 26.01 03:11:22, skipping insertion in model container [2024-01-26 15:11:22,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:11:22" (2/2) ... [2024-01-26 15:11:22,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2717dde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:22, skipping insertion in model container [2024-01-26 15:11:22,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.01 03:11:22" (2/2) ... [2024-01-26 15:11:22,763 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-26 15:11:22,785 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-26 15:11:22,786 INFO L98 nessWitnessExtractor]: Location invariant before [L712-L713] (unsigned long )arg == 0UL [2024-01-26 15:11:22,786 INFO L98 nessWitnessExtractor]: Location invariant after [L712-L713] (unsigned long )arg == 0UL [2024-01-26 15:11:22,786 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (unsigned long )arg == 0UL [2024-01-26 15:11:22,786 INFO L98 nessWitnessExtractor]: Location invariant before [L704-L704] (unsigned long )arg == 0UL [2024-01-26 15:11:22,786 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] count == 0 [2024-01-26 15:11:22,786 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (unsigned long )arg == 0UL [2024-01-26 15:11:22,787 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L695] count == 0 [2024-01-26 15:11:22,787 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] count == 0 [2024-01-26 15:11:22,787 INFO L98 nessWitnessExtractor]: Loop invariant at [L702-L707] (unsigned long )arg == 0UL [2024-01-26 15:11:22,787 INFO L98 nessWitnessExtractor]: Location invariant before [L693-L693] count == 0 [2024-01-26 15:11:22,787 INFO L98 nessWitnessExtractor]: Location invariant before [L696-L696] count == -1 [2024-01-26 15:11:22,787 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] (unsigned long )arg == 0UL [2024-01-26 15:11:22,787 INFO L98 nessWitnessExtractor]: Location invariant before [L706-L706] count == 0 [2024-01-26 15:11:22,788 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] count == 0 [2024-01-26 15:11:22,788 INFO L98 nessWitnessExtractor]: Location invariant before [L705-L705] (unsigned long )arg == 0UL [2024-01-26 15:11:22,788 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] count == 0 [2024-01-26 15:11:22,788 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] count == 0 [2024-01-26 15:11:22,788 INFO L98 nessWitnessExtractor]: Location invariant before [L692-L692] count == 1 [2024-01-26 15:11:22,830 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-26 15:11:23,060 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i[30711,30724] [2024-01-26 15:11:23,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:11:23,081 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-26 15:11:23,193 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/35_double_lock_p3_vs-pthread.i[30711,30724] Start Parsing Local Start Parsing Local [2024-01-26 15:11:23,195 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-26 15:11:23,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-26 15:11:23,260 INFO L206 MainTranslator]: Completed translation [2024-01-26 15:11:23,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23 WrapperNode [2024-01-26 15:11:23,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-26 15:11:23,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-26 15:11:23,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-26 15:11:23,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-26 15:11:23,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,310 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-01-26 15:11:23,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-26 15:11:23,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-26 15:11:23,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-26 15:11:23,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-26 15:11:23,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,340 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-01-26 15:11:23,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,369 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-26 15:11:23,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-26 15:11:23,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-26 15:11:23,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-26 15:11:23,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (1/1) ... [2024-01-26 15:11:23,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-26 15:11:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-26 15:11:23,432 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 15:11:23,438 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 15:11:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-01-26 15:11:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-01-26 15:11:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-26 15:11:23,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-26 15:11:23,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-26 15:11:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-26 15:11:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-26 15:11:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-26 15:11:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-26 15:11:23,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-26 15:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-26 15:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-26 15:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-26 15:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-26 15:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-26 15:11:23,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-26 15:11:23,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-26 15:11:23,487 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 15:11:23,580 INFO L244 CfgBuilder]: Building ICFG [2024-01-26 15:11:23,582 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-26 15:11:23,734 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-26 15:11:23,735 INFO L293 CfgBuilder]: Performing block encoding [2024-01-26 15:11:23,844 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-26 15:11:23,845 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-26 15:11:23,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:11:23 BoogieIcfgContainer [2024-01-26 15:11:23,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-26 15:11:23,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-26 15:11:23,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-26 15:11:23,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-26 15:11:23,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 26.01 03:11:21" (1/4) ... [2024-01-26 15:11:23,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92e7982 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 26.01 03:11:23, skipping insertion in model container [2024-01-26 15:11:23,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.01 03:11:22" (2/4) ... [2024-01-26 15:11:23,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92e7982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:11:23, skipping insertion in model container [2024-01-26 15:11:23,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.01 03:11:23" (3/4) ... [2024-01-26 15:11:23,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92e7982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.01 03:11:23, skipping insertion in model container [2024-01-26 15:11:23,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.01 03:11:23" (4/4) ... [2024-01-26 15:11:23,855 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs-pthread.i [2024-01-26 15:11:23,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-26 15:11:23,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-01-26 15:11:23,877 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-26 15:11:23,971 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-26 15:11:24,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 138 flow [2024-01-26 15:11:24,051 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2024-01-26 15:11:24,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:24,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 3/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2024-01-26 15:11:24,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 138 flow [2024-01-26 15:11:24,068 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 64 transitions, 135 flow [2024-01-26 15:11:24,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-26 15:11:24,089 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;@449665f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 15:11:24,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-01-26 15:11:24,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-26 15:11:24,095 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-26 15:11:24,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:24,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:24,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-26 15:11:24,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-26 15:11:24,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:24,100 INFO L85 PathProgramCache]: Analyzing trace with hash 8839, now seen corresponding path program 1 times [2024-01-26 15:11:24,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:24,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387695549] [2024-01-26 15:11:24,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:24,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:24,378 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 15:11:24,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:24,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387695549] [2024-01-26 15:11:24,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387695549] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:24,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:24,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-26 15:11:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179119811] [2024-01-26 15:11:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:24,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:11:24,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:24,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:11:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:11:24,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 65 [2024-01-26 15:11:24,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:11:24,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:24,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 65 [2024-01-26 15:11:24,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:24,696 INFO L124 PetriNetUnfolderBase]: 435/1077 cut-off events. [2024-01-26 15:11:24,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 1077 events. 435/1077 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6883 event pairs, 363 based on Foata normal form. 158/1143 useless extension candidates. Maximal degree in co-relation 1880. Up to 698 conditions per place. [2024-01-26 15:11:24,710 INFO L140 encePairwiseOnDemand]: 47/65 looper letters, 28 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-01-26 15:11:24,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 201 flow [2024-01-26 15:11:24,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:11:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:11:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-01-26 15:11:24,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-01-26 15:11:24,723 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 135 flow. Second operand 3 states and 135 transitions. [2024-01-26 15:11:24,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 201 flow [2024-01-26 15:11:24,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-26 15:11:24,728 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 160 flow [2024-01-26 15:11:24,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-01-26 15:11:24,735 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2024-01-26 15:11:24,735 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 160 flow [2024-01-26 15:11:24,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-26 15:11:24,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:24,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-26 15:11:24,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-26 15:11:24,736 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-26 15:11:24,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash 263694130, now seen corresponding path program 1 times [2024-01-26 15:11:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:24,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040885088] [2024-01-26 15:11:24,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:24,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:24,915 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 15:11:24,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:24,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040885088] [2024-01-26 15:11:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040885088] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:24,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:24,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:11:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140598181] [2024-01-26 15:11:24,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:24,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:11:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:11:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:11:24,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 65 [2024-01-26 15:11:24,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 15:11:24,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:24,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 65 [2024-01-26 15:11:24,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:25,099 INFO L124 PetriNetUnfolderBase]: 358/1204 cut-off events. [2024-01-26 15:11:25,099 INFO L125 PetriNetUnfolderBase]: For 234/234 co-relation queries the response was YES. [2024-01-26 15:11:25,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 1204 events. 358/1204 cut-off events. For 234/234 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8172 event pairs, 30 based on Foata normal form. 234/1413 useless extension candidates. Maximal degree in co-relation 2097. Up to 496 conditions per place. [2024-01-26 15:11:25,111 INFO L140 encePairwiseOnDemand]: 58/65 looper letters, 38 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-01-26 15:11:25,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 283 flow [2024-01-26 15:11:25,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:11:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:11:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-01-26 15:11:25,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6961538461538461 [2024-01-26 15:11:25,117 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 160 flow. Second operand 4 states and 181 transitions. [2024-01-26 15:11:25,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 283 flow [2024-01-26 15:11:25,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 70 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:11:25,123 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 140 flow [2024-01-26 15:11:25,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-01-26 15:11:25,124 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -8 predicate places. [2024-01-26 15:11:25,125 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 140 flow [2024-01-26 15:11:25,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 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 15:11:25,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:25,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:11:25,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-26 15:11:25,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-26 15:11:25,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:25,126 INFO L85 PathProgramCache]: Analyzing trace with hash 151500668, now seen corresponding path program 1 times [2024-01-26 15:11:25,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:25,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014417399] [2024-01-26 15:11:25,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:25,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:25,250 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 15:11:25,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:25,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014417399] [2024-01-26 15:11:25,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014417399] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:25,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:25,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:11:25,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253535052] [2024-01-26 15:11:25,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:25,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:11:25,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:25,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:11:25,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:11:25,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 65 [2024-01-26 15:11:25,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 15:11:25,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:25,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 65 [2024-01-26 15:11:25,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:25,367 INFO L124 PetriNetUnfolderBase]: 309/794 cut-off events. [2024-01-26 15:11:25,367 INFO L125 PetriNetUnfolderBase]: For 57/74 co-relation queries the response was YES. [2024-01-26 15:11:25,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 794 events. 309/794 cut-off events. For 57/74 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4714 event pairs, 29 based on Foata normal form. 19/742 useless extension candidates. Maximal degree in co-relation 1460. Up to 487 conditions per place. [2024-01-26 15:11:25,373 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 28 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-01-26 15:11:25,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 208 flow [2024-01-26 15:11:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:11:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:11:25,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-01-26 15:11:25,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6807692307692308 [2024-01-26 15:11:25,375 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 140 flow. Second operand 4 states and 177 transitions. [2024-01-26 15:11:25,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 208 flow [2024-01-26 15:11:25,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:11:25,378 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 135 flow [2024-01-26 15:11:25,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-01-26 15:11:25,379 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -10 predicate places. [2024-01-26 15:11:25,379 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 135 flow [2024-01-26 15:11:25,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 15:11:25,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:25,380 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:11:25,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-26 15:11:25,381 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 34 more)] === [2024-01-26 15:11:25,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:25,381 INFO L85 PathProgramCache]: Analyzing trace with hash 401543214, now seen corresponding path program 1 times [2024-01-26 15:11:25,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:25,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184643270] [2024-01-26 15:11:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:25,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:25,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 15:11:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:25,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 15:11:25,434 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 15:11:25,435 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2024-01-26 15:11:25,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 37 remaining) [2024-01-26 15:11:25,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 37 remaining) [2024-01-26 15:11:25,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 37 remaining) [2024-01-26 15:11:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 37 remaining) [2024-01-26 15:11:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 37 remaining) [2024-01-26 15:11:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 37 remaining) [2024-01-26 15:11:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 37 remaining) [2024-01-26 15:11:25,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 37 remaining) [2024-01-26 15:11:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 37 remaining) [2024-01-26 15:11:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 37 remaining) [2024-01-26 15:11:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 37 remaining) [2024-01-26 15:11:25,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 37 remaining) [2024-01-26 15:11:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 37 remaining) [2024-01-26 15:11:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (22 of 37 remaining) [2024-01-26 15:11:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 37 remaining) [2024-01-26 15:11:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 37 remaining) [2024-01-26 15:11:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 37 remaining) [2024-01-26 15:11:25,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 37 remaining) [2024-01-26 15:11:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 37 remaining) [2024-01-26 15:11:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 37 remaining) [2024-01-26 15:11:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 37 remaining) [2024-01-26 15:11:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 37 remaining) [2024-01-26 15:11:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 37 remaining) [2024-01-26 15:11:25,441 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 37 remaining) [2024-01-26 15:11:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 37 remaining) [2024-01-26 15:11:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 37 remaining) [2024-01-26 15:11:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 37 remaining) [2024-01-26 15:11:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 37 remaining) [2024-01-26 15:11:25,442 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 37 remaining) [2024-01-26 15:11:25,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 37 remaining) [2024-01-26 15:11:25,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 37 remaining) [2024-01-26 15:11:25,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 37 remaining) [2024-01-26 15:11:25,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 37 remaining) [2024-01-26 15:11:25,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 37 remaining) [2024-01-26 15:11:25,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 37 remaining) [2024-01-26 15:11:25,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 37 remaining) [2024-01-26 15:11:25,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-26 15:11:25,447 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-01-26 15:11:25,450 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-26 15:11:25,450 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-26 15:11:25,508 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-26 15:11:25,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 121 transitions, 262 flow [2024-01-26 15:11:25,521 INFO L124 PetriNetUnfolderBase]: 4/99 cut-off events. [2024-01-26 15:11:25,521 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-26 15:11:25,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 99 events. 4/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 296 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 106. Up to 3 conditions per place. [2024-01-26 15:11:25,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 121 transitions, 262 flow [2024-01-26 15:11:25,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 94 transitions, 201 flow [2024-01-26 15:11:25,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-26 15:11:25,529 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;@449665f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 15:11:25,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-01-26 15:11:25,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-26 15:11:25,530 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-26 15:11:25,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:25,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:25,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-26 15:11:25,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-26 15:11:25,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 12711, now seen corresponding path program 1 times [2024-01-26 15:11:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524298144] [2024-01-26 15:11:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:25,551 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 15:11:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524298144] [2024-01-26 15:11:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524298144] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:25,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:25,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-26 15:11:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950442928] [2024-01-26 15:11:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:25,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:11:25,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:11:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:11:25,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 121 [2024-01-26 15:11:25,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 15:11:25,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:25,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 121 [2024-01-26 15:11:25,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:28,033 INFO L124 PetriNetUnfolderBase]: 16707/31632 cut-off events. [2024-01-26 15:11:28,034 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-01-26 15:11:28,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57732 conditions, 31632 events. 16707/31632 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 300984 event pairs, 12671 based on Foata normal form. 4610/33604 useless extension candidates. Maximal degree in co-relation 57719. Up to 20434 conditions per place. [2024-01-26 15:11:28,236 INFO L140 encePairwiseOnDemand]: 91/121 looper letters, 71 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-01-26 15:11:28,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 436 flow [2024-01-26 15:11:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-26 15:11:28,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-26 15:11:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-01-26 15:11:28,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.743801652892562 [2024-01-26 15:11:28,238 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 201 flow. Second operand 3 states and 270 transitions. [2024-01-26 15:11:28,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 436 flow [2024-01-26 15:11:28,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-26 15:11:28,241 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 314 flow [2024-01-26 15:11:28,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2024-01-26 15:11:28,243 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 0 predicate places. [2024-01-26 15:11:28,243 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 314 flow [2024-01-26 15:11:28,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 15:11:28,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:28,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-26 15:11:28,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-26 15:11:28,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-26 15:11:28,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 379218818, now seen corresponding path program 1 times [2024-01-26 15:11:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:28,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637366749] [2024-01-26 15:11:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:28,415 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 15:11:28,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:28,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637366749] [2024-01-26 15:11:28,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637366749] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:28,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:28,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:11:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568117588] [2024-01-26 15:11:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:28,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:11:28,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:11:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:11:28,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 121 [2024-01-26 15:11:28,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 15:11:28,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:28,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 121 [2024-01-26 15:11:28,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:30,512 INFO L124 PetriNetUnfolderBase]: 14183/29906 cut-off events. [2024-01-26 15:11:30,512 INFO L125 PetriNetUnfolderBase]: For 8811/8949 co-relation queries the response was YES. [2024-01-26 15:11:30,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62958 conditions, 29906 events. 14183/29906 cut-off events. For 8811/8949 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 305190 event pairs, 7380 based on Foata normal form. 4764/33090 useless extension candidates. Maximal degree in co-relation 62942. Up to 17603 conditions per place. [2024-01-26 15:11:30,686 INFO L140 encePairwiseOnDemand]: 114/121 looper letters, 74 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2024-01-26 15:11:30,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 574 flow [2024-01-26 15:11:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:11:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:11:30,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2024-01-26 15:11:30,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.737603305785124 [2024-01-26 15:11:30,687 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 314 flow. Second operand 4 states and 357 transitions. [2024-01-26 15:11:30,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 574 flow [2024-01-26 15:11:30,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 130 transitions, 528 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:11:30,706 INFO L231 Difference]: Finished difference. Result has 94 places, 95 transitions, 278 flow [2024-01-26 15:11:30,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=94, PETRI_TRANSITIONS=95} [2024-01-26 15:11:30,707 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -4 predicate places. [2024-01-26 15:11:30,707 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 95 transitions, 278 flow [2024-01-26 15:11:30,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 15:11:30,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:30,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:11:30,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-26 15:11:30,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-26 15:11:30,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:30,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1451203707, now seen corresponding path program 1 times [2024-01-26 15:11:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364034612] [2024-01-26 15:11:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:30,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:30,758 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 15:11:30,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:30,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364034612] [2024-01-26 15:11:30,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364034612] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:30,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:30,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:11:30,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886168874] [2024-01-26 15:11:30,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:30,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:11:30,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:30,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:11:30,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:11:30,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 121 [2024-01-26 15:11:30,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 95 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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 15:11:30,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:30,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 121 [2024-01-26 15:11:30,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:32,498 INFO L124 PetriNetUnfolderBase]: 12598/25766 cut-off events. [2024-01-26 15:11:32,499 INFO L125 PetriNetUnfolderBase]: For 3015/3057 co-relation queries the response was YES. [2024-01-26 15:11:32,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51311 conditions, 25766 events. 12598/25766 cut-off events. For 3015/3057 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 260047 event pairs, 1823 based on Foata normal form. 501/24528 useless extension candidates. Maximal degree in co-relation 51295. Up to 16957 conditions per place. [2024-01-26 15:11:32,649 INFO L140 encePairwiseOnDemand]: 116/121 looper letters, 60 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-01-26 15:11:32,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 113 transitions, 451 flow [2024-01-26 15:11:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:11:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:11:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2024-01-26 15:11:32,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7293388429752066 [2024-01-26 15:11:32,651 INFO L175 Difference]: Start difference. First operand has 94 places, 95 transitions, 278 flow. Second operand 4 states and 353 transitions. [2024-01-26 15:11:32,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 113 transitions, 451 flow [2024-01-26 15:11:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 113 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:11:32,654 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 273 flow [2024-01-26 15:11:32,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-01-26 15:11:32,656 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -6 predicate places. [2024-01-26 15:11:32,656 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 273 flow [2024-01-26 15:11:32,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 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 15:11:32,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:32,657 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:11:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-26 15:11:32,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-26 15:11:32,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:32,657 INFO L85 PathProgramCache]: Analyzing trace with hash -368429439, now seen corresponding path program 1 times [2024-01-26 15:11:32,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:32,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800357831] [2024-01-26 15:11:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:32,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-26 15:11:32,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:32,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800357831] [2024-01-26 15:11:32,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800357831] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:32,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:32,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-26 15:11:32,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407220211] [2024-01-26 15:11:32,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:32,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-26 15:11:32,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:32,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-26 15:11:32,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-26 15:11:32,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 121 [2024-01-26 15:11:32,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 15:11:32,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:32,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 121 [2024-01-26 15:11:32,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-26 15:11:34,235 INFO L124 PetriNetUnfolderBase]: 12718/25579 cut-off events. [2024-01-26 15:11:34,236 INFO L125 PetriNetUnfolderBase]: For 3194/3218 co-relation queries the response was YES. [2024-01-26 15:11:34,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51279 conditions, 25579 events. 12718/25579 cut-off events. For 3194/3218 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 254293 event pairs, 1777 based on Foata normal form. 503/24528 useless extension candidates. Maximal degree in co-relation 51264. Up to 16685 conditions per place. [2024-01-26 15:11:34,374 INFO L140 encePairwiseOnDemand]: 116/121 looper letters, 73 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2024-01-26 15:11:34,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 123 transitions, 501 flow [2024-01-26 15:11:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-26 15:11:34,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-26 15:11:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 366 transitions. [2024-01-26 15:11:34,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.756198347107438 [2024-01-26 15:11:34,375 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 273 flow. Second operand 4 states and 366 transitions. [2024-01-26 15:11:34,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 123 transitions, 501 flow [2024-01-26 15:11:34,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 123 transitions, 498 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-26 15:11:34,378 INFO L231 Difference]: Finished difference. Result has 90 places, 89 transitions, 268 flow [2024-01-26 15:11:34,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=268, PETRI_PLACES=90, PETRI_TRANSITIONS=89} [2024-01-26 15:11:34,378 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -8 predicate places. [2024-01-26 15:11:34,378 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 268 flow [2024-01-26 15:11:34,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 4 states have internal predecessors, (302), 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 15:11:34,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:34,379 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-01-26 15:11:34,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-26 15:11:34,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 51 more)] === [2024-01-26 15:11:34,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1463579256, now seen corresponding path program 1 times [2024-01-26 15:11:34,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:34,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256259116] [2024-01-26 15:11:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:34,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:34,388 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-26 15:11:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-26 15:11:34,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-26 15:11:34,395 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-26 15:11:34,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (53 of 54 remaining) [2024-01-26 15:11:34,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 54 remaining) [2024-01-26 15:11:34,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 54 remaining) [2024-01-26 15:11:34,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 54 remaining) [2024-01-26 15:11:34,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 54 remaining) [2024-01-26 15:11:34,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 54 remaining) [2024-01-26 15:11:34,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 54 remaining) [2024-01-26 15:11:34,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 54 remaining) [2024-01-26 15:11:34,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 54 remaining) [2024-01-26 15:11:34,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 54 remaining) [2024-01-26 15:11:34,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 54 remaining) [2024-01-26 15:11:34,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 54 remaining) [2024-01-26 15:11:34,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 54 remaining) [2024-01-26 15:11:34,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 54 remaining) [2024-01-26 15:11:34,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (39 of 54 remaining) [2024-01-26 15:11:34,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 54 remaining) [2024-01-26 15:11:34,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 54 remaining) [2024-01-26 15:11:34,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 54 remaining) [2024-01-26 15:11:34,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 54 remaining) [2024-01-26 15:11:34,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 54 remaining) [2024-01-26 15:11:34,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 54 remaining) [2024-01-26 15:11:34,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 54 remaining) [2024-01-26 15:11:34,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 54 remaining) [2024-01-26 15:11:34,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 54 remaining) [2024-01-26 15:11:34,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 54 remaining) [2024-01-26 15:11:34,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 54 remaining) [2024-01-26 15:11:34,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 54 remaining) [2024-01-26 15:11:34,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 54 remaining) [2024-01-26 15:11:34,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 54 remaining) [2024-01-26 15:11:34,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 54 remaining) [2024-01-26 15:11:34,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 54 remaining) [2024-01-26 15:11:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 54 remaining) [2024-01-26 15:11:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 54 remaining) [2024-01-26 15:11:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 54 remaining) [2024-01-26 15:11:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 54 remaining) [2024-01-26 15:11:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (11 of 54 remaining) [2024-01-26 15:11:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 54 remaining) [2024-01-26 15:11:34,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 54 remaining) [2024-01-26 15:11:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 54 remaining) [2024-01-26 15:11:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 54 remaining) [2024-01-26 15:11:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 54 remaining) [2024-01-26 15:11:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 54 remaining) [2024-01-26 15:11:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 54 remaining) [2024-01-26 15:11:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONERROR_FUNCTION (3 of 54 remaining) [2024-01-26 15:11:34,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 54 remaining) [2024-01-26 15:11:34,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 54 remaining) [2024-01-26 15:11:34,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 54 remaining) [2024-01-26 15:11:34,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-26 15:11:34,403 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-01-26 15:11:34,404 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-26 15:11:34,404 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-26 15:11:34,436 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-26 15:11:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 177 transitions, 390 flow [2024-01-26 15:11:34,448 INFO L124 PetriNetUnfolderBase]: 5/132 cut-off events. [2024-01-26 15:11:34,449 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-26 15:11:34,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 132 events. 5/132 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 490 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 143. Up to 4 conditions per place. [2024-01-26 15:11:34,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 177 transitions, 390 flow [2024-01-26 15:11:34,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 124 transitions, 269 flow [2024-01-26 15:11:34,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-26 15:11:34,453 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;@449665f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-26 15:11:34,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-01-26 15:11:34,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-26 15:11:34,455 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-26 15:11:34,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-26 15:11:34,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-26 15:11:34,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-26 15:11:34,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err7ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-26 15:11:34,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-26 15:11:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash 18375, now seen corresponding path program 1 times [2024-01-26 15:11:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-26 15:11:34,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685670485] [2024-01-26 15:11:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-26 15:11:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-26 15:11:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-26 15:11:34,467 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 15:11:34,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-26 15:11:34,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685670485] [2024-01-26 15:11:34,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685670485] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-26 15:11:34,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-26 15:11:34,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-26 15:11:34,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100740739] [2024-01-26 15:11:34,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-26 15:11:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-26 15:11:34,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-26 15:11:34,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-26 15:11:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-26 15:11:34,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 177 [2024-01-26 15:11:34,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 15:11:34,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-26 15:11:34,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 177 [2024-01-26 15:11:34,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand