./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/queue.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/queue.i ./goblint.2024-06-19_11-23-25.files/protection/queue.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-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:07:22,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:07:22,749 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:07:22,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:07:22,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:07:22,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:07:22,787 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:07:22,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:07:22,788 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:07:22,792 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:07:22,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:07:22,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:07:22,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:07:22,795 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:07:22,795 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:07:22,796 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:07:22,796 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:07:22,796 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:07:22,797 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:07:22,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:07:22,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:07:22,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:07:22,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:07:22,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:07:22,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:07:22,799 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:07:22,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:07:22,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:07:22,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:07:22,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:07:22,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:07:22,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:07:22,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:07:22,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:07:22,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:07:22,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:07:22,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:07:22,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:07:22,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:07:22,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:07:22,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:07:22,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:07:22,805 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:07:22,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:07:23,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:07:23,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:07:23,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:07:23,106 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:07:23,107 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:07:23,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2024-06-27 18:07:24,358 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:07:24,624 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:07:24,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2024-06-27 18:07:24,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a045fafeb/e43cf112e2454a928912e9727279a42e/FLAGddef32b52 [2024-06-27 18:07:24,651 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a045fafeb/e43cf112e2454a928912e9727279a42e [2024-06-27 18:07:24,653 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:07:24,654 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:07:24,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/queue.yml/witness.yml [2024-06-27 18:07:24,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:07:24,762 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:07:24,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:07:24,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:07:24,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:07:24,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:07:24" (1/2) ... [2024-06-27 18:07:24,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a6d10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:07:24, skipping insertion in model container [2024-06-27 18:07:24,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:07:24" (1/2) ... [2024-06-27 18:07:24,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@35575271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:07:24, skipping insertion in model container [2024-06-27 18:07:24,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:07:24" (2/2) ... [2024-06-27 18:07:24,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a6d10f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:24, skipping insertion in model container [2024-06-27 18:07:24,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:07:24" (2/2) ... [2024-06-27 18:07:24,773 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:07:24,819 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:07:24,820 INFO L97 edCorrectnessWitness]: Location invariant before [L1064-L1064] ! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20) [2024-06-27 18:07:24,821 INFO L97 edCorrectnessWitness]: Location invariant before [L1065-L1065] ! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 20) && queue.tail <= 20) [2024-06-27 18:07:24,821 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-27 18:07:24,821 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:07:24,821 INFO L106 edCorrectnessWitness]: ghost_update [L1063-L1063] multithreaded = 1; [2024-06-27 18:07:24,822 INFO L106 edCorrectnessWitness]: ghost_update [L1017-L1017] m_locked = 0; [2024-06-27 18:07:24,822 INFO L106 edCorrectnessWitness]: ghost_update [L1029-L1029] m_locked = 0; [2024-06-27 18:07:24,822 INFO L106 edCorrectnessWitness]: ghost_update [L1039-L1039] m_locked = 1; [2024-06-27 18:07:24,822 INFO L106 edCorrectnessWitness]: ghost_update [L1048-L1048] m_locked = 0; [2024-06-27 18:07:24,823 INFO L106 edCorrectnessWitness]: ghost_update [L1020-L1020] m_locked = 1; [2024-06-27 18:07:24,823 INFO L106 edCorrectnessWitness]: ghost_update [L1008-L1008] m_locked = 1; [2024-06-27 18:07:24,879 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:07:25,451 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2024-06-27 18:07:25,460 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2024-06-27 18:07:25,466 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2024-06-27 18:07:25,472 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:07:25,482 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:07:25,595 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] Start Parsing Local [2024-06-27 18:07:25,601 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] Start Parsing Local [2024-06-27 18:07:25,603 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:07:25,646 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:07:25,706 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:07:25,709 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25 WrapperNode [2024-06-27 18:07:25,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:07:25,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:07:25,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:07:25,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:07:25,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,800 INFO L138 Inliner]: procedures = 274, calls = 245, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 990 [2024-06-27 18:07:25,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:07:25,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:07:25,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:07:25,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:07:25,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,847 INFO L175 MemorySlicer]: Split 235 memory accesses to 5 slices as follows [2, 8, 5, 4, 216]. 92 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0]. The 18 writes are split as follows [0, 0, 0, 3, 15]. [2024-06-27 18:07:25,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,886 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:07:25,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:07:25,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:07:25,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:07:25,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (1/1) ... [2024-06-27 18:07:25,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:07:25,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:07:25,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:07:25,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:07:25,991 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-27 18:07:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-27 18:07:25,992 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-27 18:07:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-27 18:07:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 18:07:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:07:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:07:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-27 18:07:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-06-27 18:07:25,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-06-27 18:07:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:07:25,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:07:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-27 18:07:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-06-27 18:07:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-06-27 18:07:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 18:07:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:07:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:07:25,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:07:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-27 18:07:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-27 18:07:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-06-27 18:07:25,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:07:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:07:26,000 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:07:26,199 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:07:26,201 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:07:27,109 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:07:27,109 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:07:29,318 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:07:29,319 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 18:07:29,319 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:07:29 BoogieIcfgContainer [2024-06-27 18:07:29,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:07:29,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:07:29,321 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:07:29,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:07:29,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:07:24" (1/4) ... [2024-06-27 18:07:29,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3b8011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:07:29, skipping insertion in model container [2024-06-27 18:07:29,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:07:24" (2/4) ... [2024-06-27 18:07:29,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3b8011 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:07:29, skipping insertion in model container [2024-06-27 18:07:29,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:07:25" (3/4) ... [2024-06-27 18:07:29,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d3b8011 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:07:29, skipping insertion in model container [2024-06-27 18:07:29,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:07:29" (4/4) ... [2024-06-27 18:07:29,327 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2024-06-27 18:07:29,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:07:29,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:07:29,345 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:07:29,405 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 18:07:29,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 53 transitions, 120 flow [2024-06-27 18:07:29,481 INFO L124 PetriNetUnfolderBase]: 7/51 cut-off events. [2024-06-27 18:07:29,481 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 18:07:29,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 7/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 103 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-06-27 18:07:29,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 53 transitions, 120 flow [2024-06-27 18:07:29,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 49 transitions, 107 flow [2024-06-27 18:07:29,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:07:29,510 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;@303028e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:07:29,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:07:29,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:07:29,513 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-06-27 18:07:29,513 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:07:29,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:29,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-06-27 18:07:29,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:29,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2113480, now seen corresponding path program 1 times [2024-06-27 18:07:29,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:29,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602453136] [2024-06-27 18:07:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:29,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:29,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602453136] [2024-06-27 18:07:29,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602453136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:07:29,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:07:29,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:07:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175433586] [2024-06-27 18:07:29,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:07:29,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-06-27 18:07:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:07:29,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-06-27 18:07:29,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-06-27 18:07:29,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:07:29,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 107 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:29,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:07:29,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:07:29,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:30,481 INFO L124 PetriNetUnfolderBase]: 966/1653 cut-off events. [2024-06-27 18:07:30,482 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-06-27 18:07:30,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3201 conditions, 1653 events. 966/1653 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8205 event pairs, 778 based on Foata normal form. 93/1444 useless extension candidates. Maximal degree in co-relation 3102. Up to 1508 conditions per place. [2024-06-27 18:07:30,499 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 36 selfloop transitions, 0 changer transitions 0/44 dead transitions. [2024-06-27 18:07:30,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 169 flow [2024-06-27 18:07:30,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-06-27 18:07:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-06-27 18:07:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 61 transitions. [2024-06-27 18:07:30,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754716981132075 [2024-06-27 18:07:30,513 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 107 flow. Second operand 2 states and 61 transitions. [2024-06-27 18:07:30,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 169 flow [2024-06-27 18:07:30,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:07:30,524 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 92 flow [2024-06-27 18:07:30,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-06-27 18:07:30,530 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-06-27 18:07:30,530 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 92 flow [2024-06-27 18:07:30,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:30,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:30,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-27 18:07:30,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:07:30,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:30,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:30,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1458152969, now seen corresponding path program 1 times [2024-06-27 18:07:30,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:30,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229625791] [2024-06-27 18:07:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:30,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:31,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229625791] [2024-06-27 18:07:31,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229625791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:07:31,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:07:31,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:07:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607560404] [2024-06-27 18:07:31,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:07:31,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:07:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:07:31,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:07:31,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:07:31,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:07:31,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:31,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:07:31,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:07:31,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:31,759 INFO L124 PetriNetUnfolderBase]: 1058/1792 cut-off events. [2024-06-27 18:07:31,760 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-06-27 18:07:31,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 1792 events. 1058/1792 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9098 event pairs, 327 based on Foata normal form. 0/1517 useless extension candidates. Maximal degree in co-relation 3448. Up to 1502 conditions per place. [2024-06-27 18:07:31,770 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 48 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-06-27 18:07:31,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 226 flow [2024-06-27 18:07:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:07:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:07:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-27 18:07:31,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5408805031446541 [2024-06-27 18:07:31,774 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 92 flow. Second operand 3 states and 86 transitions. [2024-06-27 18:07:31,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 226 flow [2024-06-27 18:07:31,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 18:07:31,777 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 113 flow [2024-06-27 18:07:31,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2024-06-27 18:07:31,778 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2024-06-27 18:07:31,778 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 113 flow [2024-06-27 18:07:31,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:31,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:31,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:07:31,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:07:31,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:31,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:31,780 INFO L85 PathProgramCache]: Analyzing trace with hash -533176675, now seen corresponding path program 1 times [2024-06-27 18:07:31,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:31,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611819591] [2024-06-27 18:07:31,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:31,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:32,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:32,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611819591] [2024-06-27 18:07:32,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611819591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:07:32,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:07:32,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:07:32,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80091028] [2024-06-27 18:07:32,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:07:32,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:07:32,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:07:32,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:07:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:07:32,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:07:32,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 113 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:32,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:07:32,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:07:32,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:32,913 INFO L124 PetriNetUnfolderBase]: 1276/2201 cut-off events. [2024-06-27 18:07:32,913 INFO L125 PetriNetUnfolderBase]: For 286/291 co-relation queries the response was YES. [2024-06-27 18:07:32,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4466 conditions, 2201 events. 1276/2201 cut-off events. For 286/291 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11766 event pairs, 173 based on Foata normal form. 52/2083 useless extension candidates. Maximal degree in co-relation 4461. Up to 1394 conditions per place. [2024-06-27 18:07:32,926 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 69 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2024-06-27 18:07:32,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 340 flow [2024-06-27 18:07:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:07:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:07:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-27 18:07:32,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-06-27 18:07:32,932 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 113 flow. Second operand 4 states and 120 transitions. [2024-06-27 18:07:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 340 flow [2024-06-27 18:07:32,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 82 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:07:32,936 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 137 flow [2024-06-27 18:07:32,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-06-27 18:07:32,937 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2024-06-27 18:07:32,937 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 137 flow [2024-06-27 18:07:32,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:32,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:32,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:07:32,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:07:32,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:32,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -495281506, now seen corresponding path program 1 times [2024-06-27 18:07:32,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:32,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897632974] [2024-06-27 18:07:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:32,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897632974] [2024-06-27 18:07:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897632974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:07:33,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:07:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:07:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19595108] [2024-06-27 18:07:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:07:33,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:07:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:07:33,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:07:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:07:33,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:07:33,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:33,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:07:33,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:07:33,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:33,535 INFO L124 PetriNetUnfolderBase]: 1225/2156 cut-off events. [2024-06-27 18:07:33,536 INFO L125 PetriNetUnfolderBase]: For 732/742 co-relation queries the response was YES. [2024-06-27 18:07:33,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 2156 events. 1225/2156 cut-off events. For 732/742 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11840 event pairs, 869 based on Foata normal form. 8/2030 useless extension candidates. Maximal degree in co-relation 4665. Up to 1755 conditions per place. [2024-06-27 18:07:33,547 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 53 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-06-27 18:07:33,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 296 flow [2024-06-27 18:07:33,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:07:33,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:07:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-27 18:07:33,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2024-06-27 18:07:33,549 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 137 flow. Second operand 3 states and 85 transitions. [2024-06-27 18:07:33,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 296 flow [2024-06-27 18:07:33,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 284 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 18:07:33,553 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 132 flow [2024-06-27 18:07:33,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-06-27 18:07:33,554 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2024-06-27 18:07:33,554 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 132 flow [2024-06-27 18:07:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:33,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:33,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:07:33,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:07:33,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:33,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1826145635, now seen corresponding path program 1 times [2024-06-27 18:07:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:33,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110713617] [2024-06-27 18:07:33,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:33,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:33,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110713617] [2024-06-27 18:07:33,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110713617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:07:33,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:07:33,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:07:33,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077513234] [2024-06-27 18:07:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:07:33,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:07:33,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:07:33,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:07:33,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:07:33,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:07:33,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:33,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:07:33,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:07:33,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:34,394 INFO L124 PetriNetUnfolderBase]: 1249/2193 cut-off events. [2024-06-27 18:07:34,394 INFO L125 PetriNetUnfolderBase]: For 775/785 co-relation queries the response was YES. [2024-06-27 18:07:34,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4785 conditions, 2193 events. 1249/2193 cut-off events. For 775/785 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12072 event pairs, 238 based on Foata normal form. 8/2101 useless extension candidates. Maximal degree in co-relation 4779. Up to 1388 conditions per place. [2024-06-27 18:07:34,405 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 86 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2024-06-27 18:07:34,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 103 transitions, 453 flow [2024-06-27 18:07:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:07:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:07:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-27 18:07:34,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125786163522013 [2024-06-27 18:07:34,408 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 132 flow. Second operand 6 states and 163 transitions. [2024-06-27 18:07:34,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 103 transitions, 453 flow [2024-06-27 18:07:34,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 103 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:07:34,412 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 172 flow [2024-06-27 18:07:34,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-27 18:07:34,414 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2024-06-27 18:07:34,414 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 172 flow [2024-06-27 18:07:34,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:34,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:34,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:07:34,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:07:34,415 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:34,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash -232032976, now seen corresponding path program 1 times [2024-06-27 18:07:34,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:34,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129674451] [2024-06-27 18:07:34,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:34,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:34,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:34,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129674451] [2024-06-27 18:07:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129674451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:07:34,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:07:34,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:07:34,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333335377] [2024-06-27 18:07:34,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:07:34,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:07:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:07:34,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:07:34,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:07:34,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:07:34,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:34,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:07:34,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:07:34,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:34,937 INFO L124 PetriNetUnfolderBase]: 865/1584 cut-off events. [2024-06-27 18:07:34,938 INFO L125 PetriNetUnfolderBase]: For 741/746 co-relation queries the response was YES. [2024-06-27 18:07:34,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 1584 events. 865/1584 cut-off events. For 741/746 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7802 event pairs, 438 based on Foata normal form. 49/1594 useless extension candidates. Maximal degree in co-relation 3441. Up to 759 conditions per place. [2024-06-27 18:07:34,947 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 48 selfloop transitions, 4 changer transitions 2/61 dead transitions. [2024-06-27 18:07:34,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 281 flow [2024-06-27 18:07:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:07:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:07:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-06-27 18:07:34,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-06-27 18:07:34,949 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 172 flow. Second operand 3 states and 87 transitions. [2024-06-27 18:07:34,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 281 flow [2024-06-27 18:07:34,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 265 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:07:34,954 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 130 flow [2024-06-27 18:07:34,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 18:07:34,956 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2024-06-27 18:07:34,956 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 130 flow [2024-06-27 18:07:34,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:34,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:34,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:07:34,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:07:34,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:34,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:34,958 INFO L85 PathProgramCache]: Analyzing trace with hash 501390992, now seen corresponding path program 1 times [2024-06-27 18:07:34,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:34,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809769860] [2024-06-27 18:07:34,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:34,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:35,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:35,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809769860] [2024-06-27 18:07:35,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809769860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:07:35,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:07:35,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:07:35,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335804285] [2024-06-27 18:07:35,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:07:35,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:07:35,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:07:35,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:07:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:07:35,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:07:35,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:35,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:07:35,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:07:35,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:07:36,322 INFO L124 PetriNetUnfolderBase]: 1038/1882 cut-off events. [2024-06-27 18:07:36,322 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2024-06-27 18:07:36,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 1882 events. 1038/1882 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9694 event pairs, 124 based on Foata normal form. 30/1881 useless extension candidates. Maximal degree in co-relation 4163. Up to 913 conditions per place. [2024-06-27 18:07:36,332 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 73 selfloop transitions, 5 changer transitions 3/88 dead transitions. [2024-06-27 18:07:36,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 400 flow [2024-06-27 18:07:36,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:07:36,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:07:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-06-27 18:07:36,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169811320754717 [2024-06-27 18:07:36,334 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 130 flow. Second operand 5 states and 137 transitions. [2024-06-27 18:07:36,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 400 flow [2024-06-27 18:07:36,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 88 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:07:36,336 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 161 flow [2024-06-27 18:07:36,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-27 18:07:36,338 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-06-27 18:07:36,338 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 161 flow [2024-06-27 18:07:36,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:07:36,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:07:36,338 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:07:36,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:07:36,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:07:36,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:07:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1994132199, now seen corresponding path program 1 times [2024-06-27 18:07:36,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:07:36,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818986702] [2024-06-27 18:07:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:36,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:07:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:37,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:07:37,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818986702] [2024-06-27 18:07:37,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818986702] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:07:37,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38248838] [2024-06-27 18:07:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:07:37,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:07:37,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:07:37,637 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:07:37,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-27 18:07:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:07:38,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 21 conjunts are in the unsatisfiable core [2024-06-27 18:07:38,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:07:38,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-06-27 18:07:38,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 149 [2024-06-27 18:07:38,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 18:07:38,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 18:07:38,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 79 [2024-06-27 18:07:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:07:38,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:07:39,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-06-27 18:07:39,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-06-27 18:07:39,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-06-27 18:08:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:16,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38248838] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:08:16,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:08:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-06-27 18:08:16,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831487984] [2024-06-27 18:08:16,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:08:16,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-06-27 18:08:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-06-27 18:08:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=148, Unknown=1, NotChecked=0, Total=210 [2024-06-27 18:08:16,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-27 18:08:16,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 161 flow. Second operand has 15 states, 15 states have (on average 12.8) internal successors, (192), 15 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:16,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:16,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-27 18:08:16,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:18,371 INFO L124 PetriNetUnfolderBase]: 2726/4965 cut-off events. [2024-06-27 18:08:18,372 INFO L125 PetriNetUnfolderBase]: For 4047/4047 co-relation queries the response was YES. [2024-06-27 18:08:18,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11074 conditions, 4965 events. 2726/4965 cut-off events. For 4047/4047 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 28094 event pairs, 346 based on Foata normal form. 270/5139 useless extension candidates. Maximal degree in co-relation 11065. Up to 805 conditions per place. [2024-06-27 18:08:18,394 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 160 selfloop transitions, 17 changer transitions 17/199 dead transitions. [2024-06-27 18:08:18,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 199 transitions, 972 flow [2024-06-27 18:08:18,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:08:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:08:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 313 transitions. [2024-06-27 18:08:18,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45428156748911463 [2024-06-27 18:08:18,397 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 161 flow. Second operand 13 states and 313 transitions. [2024-06-27 18:08:18,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 199 transitions, 972 flow [2024-06-27 18:08:18,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 199 transitions, 943 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:08:18,402 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 302 flow [2024-06-27 18:08:18,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2024-06-27 18:08:18,402 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2024-06-27 18:08:18,403 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 302 flow [2024-06-27 18:08:18,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.8) internal successors, (192), 15 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:18,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:18,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:18,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-27 18:08:18,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:08:18,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:18,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1107672045, now seen corresponding path program 1 times [2024-06-27 18:08:18,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:18,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091823108] [2024-06-27 18:08:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:18,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091823108] [2024-06-27 18:08:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091823108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:08:18,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:08:18,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:08:18,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932480126] [2024-06-27 18:08:18,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:08:18,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:08:18,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:18,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:08:18,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:08:18,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:08:18,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:18,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:18,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:08:18,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:19,224 INFO L124 PetriNetUnfolderBase]: 1791/3600 cut-off events. [2024-06-27 18:08:19,224 INFO L125 PetriNetUnfolderBase]: For 5386/5386 co-relation queries the response was YES. [2024-06-27 18:08:19,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8489 conditions, 3600 events. 1791/3600 cut-off events. For 5386/5386 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19324 event pairs, 674 based on Foata normal form. 181/3720 useless extension candidates. Maximal degree in co-relation 8472. Up to 1637 conditions per place. [2024-06-27 18:08:19,251 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 57 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-06-27 18:08:19,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 473 flow [2024-06-27 18:08:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:08:19,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:08:19,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-06-27 18:08:19,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345911949685535 [2024-06-27 18:08:19,254 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 302 flow. Second operand 3 states and 85 transitions. [2024-06-27 18:08:19,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 473 flow [2024-06-27 18:08:19,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 457 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:08:19,271 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 286 flow [2024-06-27 18:08:19,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-06-27 18:08:19,273 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 20 predicate places. [2024-06-27 18:08:19,273 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 286 flow [2024-06-27 18:08:19,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:19,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:19,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:19,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:08:19,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:19,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1412336246, now seen corresponding path program 1 times [2024-06-27 18:08:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443189302] [2024-06-27 18:08:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:19,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443189302] [2024-06-27 18:08:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443189302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:08:20,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:08:20,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:08:20,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048144276] [2024-06-27 18:08:20,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:08:20,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:08:20,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:08:20,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:08:20,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:08:20,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 286 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:20,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:20,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:08:20,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:21,456 INFO L124 PetriNetUnfolderBase]: 1997/3948 cut-off events. [2024-06-27 18:08:21,456 INFO L125 PetriNetUnfolderBase]: For 5895/5900 co-relation queries the response was YES. [2024-06-27 18:08:21,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9845 conditions, 3948 events. 1997/3948 cut-off events. For 5895/5900 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 21821 event pairs, 742 based on Foata normal form. 53/3930 useless extension candidates. Maximal degree in co-relation 9827. Up to 2559 conditions per place. [2024-06-27 18:08:21,478 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 96 selfloop transitions, 14 changer transitions 15/133 dead transitions. [2024-06-27 18:08:21,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 133 transitions, 760 flow [2024-06-27 18:08:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:08:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:08:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 18:08:21,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45073375262054505 [2024-06-27 18:08:21,482 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 286 flow. Second operand 9 states and 215 transitions. [2024-06-27 18:08:21,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 133 transitions, 760 flow [2024-06-27 18:08:21,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 133 transitions, 738 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:08:21,493 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 396 flow [2024-06-27 18:08:21,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=396, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-06-27 18:08:21,494 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 32 predicate places. [2024-06-27 18:08:21,494 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 396 flow [2024-06-27 18:08:21,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:21,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:21,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:21,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:08:21,495 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:21,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:21,496 INFO L85 PathProgramCache]: Analyzing trace with hash -656146834, now seen corresponding path program 2 times [2024-06-27 18:08:21,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:21,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013470126] [2024-06-27 18:08:21,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:21,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:22,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013470126] [2024-06-27 18:08:22,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013470126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:08:22,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:08:22,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:08:22,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998349756] [2024-06-27 18:08:22,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:08:22,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:08:22,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:22,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:08:22,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:08:22,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:08:22,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 396 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:22,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:22,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:08:22,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:23,372 INFO L124 PetriNetUnfolderBase]: 2209/4407 cut-off events. [2024-06-27 18:08:23,373 INFO L125 PetriNetUnfolderBase]: For 9410/9452 co-relation queries the response was YES. [2024-06-27 18:08:23,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12879 conditions, 4407 events. 2209/4407 cut-off events. For 9410/9452 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 26016 event pairs, 889 based on Foata normal form. 75/4388 useless extension candidates. Maximal degree in co-relation 12855. Up to 3245 conditions per place. [2024-06-27 18:08:23,398 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 96 selfloop transitions, 15 changer transitions 7/126 dead transitions. [2024-06-27 18:08:23,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 126 transitions, 861 flow [2024-06-27 18:08:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:08:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:08:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 18:08:23,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171907756813417 [2024-06-27 18:08:23,402 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 396 flow. Second operand 9 states and 199 transitions. [2024-06-27 18:08:23,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 126 transitions, 861 flow [2024-06-27 18:08:23,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 126 transitions, 847 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:08:23,421 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 566 flow [2024-06-27 18:08:23,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=566, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-06-27 18:08:23,422 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 44 predicate places. [2024-06-27 18:08:23,422 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 566 flow [2024-06-27 18:08:23,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:23,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:23,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:23,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:08:23,423 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:23,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:23,424 INFO L85 PathProgramCache]: Analyzing trace with hash 688609402, now seen corresponding path program 3 times [2024-06-27 18:08:23,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:23,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613053356] [2024-06-27 18:08:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:23,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:24,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:24,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613053356] [2024-06-27 18:08:24,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613053356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:08:24,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:08:24,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:08:24,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987012752] [2024-06-27 18:08:24,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:08:24,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:08:24,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:24,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:08:24,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:08:24,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:08:24,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 566 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:24,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:24,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:08:24,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:25,398 INFO L124 PetriNetUnfolderBase]: 2314/4607 cut-off events. [2024-06-27 18:08:25,398 INFO L125 PetriNetUnfolderBase]: For 16219/16223 co-relation queries the response was YES. [2024-06-27 18:08:25,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15369 conditions, 4607 events. 2314/4607 cut-off events. For 16219/16223 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 27257 event pairs, 578 based on Foata normal form. 19/4552 useless extension candidates. Maximal degree in co-relation 15338. Up to 2242 conditions per place. [2024-06-27 18:08:25,493 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 125 selfloop transitions, 33 changer transitions 14/180 dead transitions. [2024-06-27 18:08:25,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 180 transitions, 1318 flow [2024-06-27 18:08:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:08:25,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:08:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 279 transitions. [2024-06-27 18:08:25,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386792452830189 [2024-06-27 18:08:25,497 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 566 flow. Second operand 12 states and 279 transitions. [2024-06-27 18:08:25,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 180 transitions, 1318 flow [2024-06-27 18:08:25,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 180 transitions, 1282 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-06-27 18:08:25,536 INFO L231 Difference]: Finished difference. Result has 107 places, 86 transitions, 683 flow [2024-06-27 18:08:25,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=683, PETRI_PLACES=107, PETRI_TRANSITIONS=86} [2024-06-27 18:08:25,537 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 58 predicate places. [2024-06-27 18:08:25,537 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 86 transitions, 683 flow [2024-06-27 18:08:25,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:25,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:25,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:25,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:08:25,538 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:25,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:25,539 INFO L85 PathProgramCache]: Analyzing trace with hash 2087664702, now seen corresponding path program 4 times [2024-06-27 18:08:25,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:25,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951711894] [2024-06-27 18:08:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:25,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:26,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:26,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951711894] [2024-06-27 18:08:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951711894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:08:26,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:08:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:08:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130434959] [2024-06-27 18:08:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:08:26,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:08:26,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:26,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:08:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:08:26,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 53 [2024-06-27 18:08:26,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 86 transitions, 683 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:26,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:26,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 53 [2024-06-27 18:08:26,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:27,641 INFO L124 PetriNetUnfolderBase]: 2486/4952 cut-off events. [2024-06-27 18:08:27,642 INFO L125 PetriNetUnfolderBase]: For 22097/22102 co-relation queries the response was YES. [2024-06-27 18:08:27,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17526 conditions, 4952 events. 2486/4952 cut-off events. For 22097/22102 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 30164 event pairs, 876 based on Foata normal form. 45/4917 useless extension candidates. Maximal degree in co-relation 17491. Up to 3108 conditions per place. [2024-06-27 18:08:27,676 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 115 selfloop transitions, 22 changer transitions 14/159 dead transitions. [2024-06-27 18:08:27,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 159 transitions, 1309 flow [2024-06-27 18:08:27,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:08:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:08:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:08:27,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-27 18:08:27,681 INFO L175 Difference]: Start difference. First operand has 107 places, 86 transitions, 683 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:08:27,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 159 transitions, 1309 flow [2024-06-27 18:08:27,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 159 transitions, 1225 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:08:27,723 INFO L231 Difference]: Finished difference. Result has 114 places, 97 transitions, 828 flow [2024-06-27 18:08:27,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=828, PETRI_PLACES=114, PETRI_TRANSITIONS=97} [2024-06-27 18:08:27,724 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 65 predicate places. [2024-06-27 18:08:27,724 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 97 transitions, 828 flow [2024-06-27 18:08:27,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:27,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:27,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:27,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:08:27,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:27,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash -276763427, now seen corresponding path program 1 times [2024-06-27 18:08:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:27,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071994889] [2024-06-27 18:08:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:27,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:28,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071994889] [2024-06-27 18:08:28,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071994889] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:08:28,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63317495] [2024-06-27 18:08:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:28,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:08:28,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:08:28,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:08:28,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-27 18:08:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:29,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 42 conjunts are in the unsatisfiable core [2024-06-27 18:08:29,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:08:29,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-27 18:08:29,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 109 [2024-06-27 18:08:29,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-06-27 18:08:29,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 105 [2024-06-27 18:08:29,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2024-06-27 18:08:29,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 18:08:29,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 33 [2024-06-27 18:08:30,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:30,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 41 [2024-06-27 18:08:30,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2024-06-27 18:08:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:30,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:08:30,634 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:08:30,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:08:30,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:30,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-06-27 18:08:33,236 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:08:33,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:08:33,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:33,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-06-27 18:08:34,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-27 18:08:34,714 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:08:34,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:08:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:35,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63317495] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:08:35,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:08:35,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 30 [2024-06-27 18:08:35,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108433775] [2024-06-27 18:08:35,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:08:35,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-27 18:08:35,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:35,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-27 18:08:35,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-06-27 18:08:36,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-27 18:08:36,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 97 transitions, 828 flow. Second operand has 31 states, 31 states have (on average 11.483870967741936) internal successors, (356), 31 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:36,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:36,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-27 18:08:36,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:40,558 INFO L124 PetriNetUnfolderBase]: 2210/4340 cut-off events. [2024-06-27 18:08:40,558 INFO L125 PetriNetUnfolderBase]: For 29822/29822 co-relation queries the response was YES. [2024-06-27 18:08:40,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16859 conditions, 4340 events. 2210/4340 cut-off events. For 29822/29822 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 24708 event pairs, 306 based on Foata normal form. 158/4440 useless extension candidates. Maximal degree in co-relation 16818. Up to 1370 conditions per place. [2024-06-27 18:08:40,588 INFO L140 encePairwiseOnDemand]: 35/53 looper letters, 159 selfloop transitions, 86 changer transitions 9/259 dead transitions. [2024-06-27 18:08:40,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 259 transitions, 2359 flow [2024-06-27 18:08:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-06-27 18:08:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-06-27 18:08:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 383 transitions. [2024-06-27 18:08:40,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3613207547169811 [2024-06-27 18:08:40,592 INFO L175 Difference]: Start difference. First operand has 114 places, 97 transitions, 828 flow. Second operand 20 states and 383 transitions. [2024-06-27 18:08:40,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 259 transitions, 2359 flow [2024-06-27 18:08:40,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 259 transitions, 2260 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-27 18:08:40,719 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1504 flow [2024-06-27 18:08:40,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1504, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2024-06-27 18:08:40,720 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 89 predicate places. [2024-06-27 18:08:40,720 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1504 flow [2024-06-27 18:08:40,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.483870967741936) internal successors, (356), 31 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:40,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:40,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:40,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-27 18:08:40,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-06-27 18:08:40,936 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:40,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:40,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1370104525, now seen corresponding path program 2 times [2024-06-27 18:08:40,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:40,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842902739] [2024-06-27 18:08:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:40,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:42,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:42,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842902739] [2024-06-27 18:08:42,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842902739] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:08:42,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503760580] [2024-06-27 18:08:42,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-27 18:08:42,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:08:42,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:08:42,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:08:42,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-27 18:08:42,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-27 18:08:42,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:08:42,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 40 conjunts are in the unsatisfiable core [2024-06-27 18:08:42,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:08:42,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-27 18:08:42,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 109 [2024-06-27 18:08:42,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 18:08:42,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-06-27 18:08:42,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-06-27 18:08:42,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2024-06-27 18:08:42,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2024-06-27 18:08:43,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:43,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 78 [2024-06-27 18:08:43,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 64 [2024-06-27 18:08:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:43,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:08:43,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:43,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-06-27 18:08:43,906 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:08:43,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:08:45,791 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:08:45,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:08:45,831 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:45,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-06-27 18:08:50,504 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int#4| |c_~#queue~0.base|)) (.cse3 (+ 84 |c_~#queue~0.offset|))) (let ((.cse20 (select .cse1 .cse3)) (.cse10 (+ |c_~#queue~0.offset| 80))) (let ((.cse4 (+ |c_~#queue~0.offset| (* (select .cse1 .cse10) 4))) (.cse14 (select |c_#memory_int#3| |c_~#stored_elements~0.base|)) (.cse15 (+ (* 4 |c_t2Thread1of1ForFork1_~i~1#1|) |c_~#stored_elements~0.offset|)) (.cse11 (+ (* .cse20 4) |c_~#queue~0.offset|)) (.cse13 (= .cse20 21))) (let ((.cse5 (not .cse13)) (.cse6 (not (= .cse20 22))) (.cse0 (forall ((v_ArrVal_1102 Int)) (not (= (select (store .cse1 .cse11 v_ArrVal_1102) .cse3) 20)))) (.cse2 (+ 88 |c_~#queue~0.offset|)) (.cse12 (+ .cse20 1)) (.cse7 (= .cse20 20)) (.cse19 (select .cse14 .cse15)) (.cse18 (= (select .cse1 .cse4) 0))) (and (or (and .cse0 (or (forall ((v_DerPreprocessor_72 Int) (v_DerPreprocessor_73 Int)) (or (not (= (select (store (store .cse1 .cse2 v_DerPreprocessor_72) .cse3 v_DerPreprocessor_73) .cse4) 0)) (= v_DerPreprocessor_73 21))) .cse5) (or .cse6 (forall ((v_DerPreprocessor_71 Int)) (not (= (select (store (store .cse1 .cse2 v_DerPreprocessor_71) .cse3 23) .cse4) 0)))) (or .cse7 (forall ((v_DerPreprocessor_68 Int) (v_DerPreprocessor_69 Int)) (let ((.cse9 (store .cse1 .cse11 v_DerPreprocessor_68))) (let ((.cse8 (store (store .cse9 .cse2 v_DerPreprocessor_69) .cse3 .cse12))) (or (not (= (select .cse8 (+ (* (select .cse9 .cse10) 4) |c_~#queue~0.offset|)) 0)) (not (= (select .cse8 .cse11) v_DerPreprocessor_68)))))) .cse13)) (forall ((v_DerPreprocessor_67 Int) (|v_t1Thread1of1ForFork0_~i~0#1_28| Int)) (or (< 2147483647 v_DerPreprocessor_67) (< |v_t1Thread1of1ForFork0_~i~0#1_28| 0) (< (+ v_DerPreprocessor_67 2147483648) 0) (not (= (select (store .cse14 (+ |c_~#stored_elements~0.offset| 4 (* |v_t1Thread1of1ForFork0_~i~0#1_28| 4)) v_DerPreprocessor_67) .cse15) 1))))) (or (and (or (forall ((v_DerPreprocessor_79 Int) (v_DerPreprocessor_78 Int)) (or (= v_DerPreprocessor_79 21) (= (select (store (store .cse1 .cse2 v_DerPreprocessor_78) .cse3 v_DerPreprocessor_79) .cse4) 0))) .cse5) (or .cse6 (forall ((v_DerPreprocessor_77 Int)) (= (select (store (store .cse1 .cse2 v_DerPreprocessor_77) .cse3 23) .cse4) 0))) .cse0 (or (forall ((v_DerPreprocessor_75 Int) (v_DerPreprocessor_76 Int)) (let ((.cse17 (store .cse1 .cse11 v_DerPreprocessor_75))) (let ((.cse16 (store (store .cse17 .cse2 v_DerPreprocessor_76) .cse3 .cse12))) (or (= (select .cse16 (+ (* 4 (select .cse17 .cse10)) |c_~#queue~0.offset|)) 0) (not (= v_DerPreprocessor_75 (select .cse16 .cse11))))))) .cse7 .cse13)) (forall ((v_DerPreprocessor_67 Int) (|v_t1Thread1of1ForFork0_~i~0#1_28| Int)) (or (< 2147483647 v_DerPreprocessor_67) (< |v_t1Thread1of1ForFork0_~i~0#1_28| 0) (< (+ v_DerPreprocessor_67 2147483648) 0) (not (= (select (store .cse14 (+ |c_~#stored_elements~0.offset| 4 (* |v_t1Thread1of1ForFork0_~i~0#1_28| 4)) v_DerPreprocessor_67) .cse15) 0))))) (or (not .cse18) (not (= .cse19 1))) (or (not (= 0 .cse19)) .cse18)))))) is different from false [2024-06-27 18:08:50,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-06-27 18:08:50,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2024-06-27 18:08:50,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-06-27 18:08:50,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2024-06-27 18:08:50,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-06-27 18:08:50,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2024-06-27 18:08:50,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-06-27 18:08:50,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2024-06-27 18:08:51,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-06-27 18:08:51,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:51,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 10095 treesize of output 5399 [2024-06-27 18:08:51,565 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:51,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-06-27 18:08:51,581 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:08:51,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:08:52,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:52,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503760580] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:08:52,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:08:52,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 30 [2024-06-27 18:08:52,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223386335] [2024-06-27 18:08:52,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:08:52,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-27 18:08:52,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:08:52,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-27 18:08:52,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=730, Unknown=1, NotChecked=56, Total=930 [2024-06-27 18:08:52,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 53 [2024-06-27 18:08:52,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1504 flow. Second operand has 31 states, 31 states have (on average 9.774193548387096) internal successors, (303), 31 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:52,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:08:52,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 53 [2024-06-27 18:08:52,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:08:55,908 INFO L124 PetriNetUnfolderBase]: 3589/6474 cut-off events. [2024-06-27 18:08:55,908 INFO L125 PetriNetUnfolderBase]: For 52718/52718 co-relation queries the response was YES. [2024-06-27 18:08:55,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27634 conditions, 6474 events. 3589/6474 cut-off events. For 52718/52718 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 35690 event pairs, 1048 based on Foata normal form. 20/6430 useless extension candidates. Maximal degree in co-relation 27583. Up to 4150 conditions per place. [2024-06-27 18:08:55,960 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 180 selfloop transitions, 45 changer transitions 5/233 dead transitions. [2024-06-27 18:08:55,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 233 transitions, 2457 flow [2024-06-27 18:08:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:08:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:08:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 242 transitions. [2024-06-27 18:08:55,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35123367198838895 [2024-06-27 18:08:55,962 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1504 flow. Second operand 13 states and 242 transitions. [2024-06-27 18:08:55,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 233 transitions, 2457 flow [2024-06-27 18:08:56,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 233 transitions, 2214 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-27 18:08:56,125 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 1498 flow [2024-06-27 18:08:56,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1498, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2024-06-27 18:08:56,126 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 96 predicate places. [2024-06-27 18:08:56,126 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 1498 flow [2024-06-27 18:08:56,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.774193548387096) internal successors, (303), 31 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:08:56,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:08:56,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:08:56,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-06-27 18:08:56,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:08:56,328 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:08:56,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:08:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash 953849885, now seen corresponding path program 3 times [2024-06-27 18:08:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:08:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712013576] [2024-06-27 18:08:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:08:56,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:08:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:08:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:57,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:08:57,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712013576] [2024-06-27 18:08:57,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712013576] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-27 18:08:57,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938987654] [2024-06-27 18:08:57,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-27 18:08:57,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-27 18:08:57,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:08:57,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-27 18:08:57,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-27 18:08:57,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-06-27 18:08:57,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-27 18:08:57,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 44 conjunts are in the unsatisfiable core [2024-06-27 18:08:57,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-27 18:08:57,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2024-06-27 18:08:57,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 109 [2024-06-27 18:08:57,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-06-27 18:08:58,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-06-27 18:08:58,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-06-27 18:08:58,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2024-06-27 18:08:58,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 49 [2024-06-27 18:08:58,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:58,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 74 [2024-06-27 18:08:58,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 62 [2024-06-27 18:08:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:08:58,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-27 18:08:59,120 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:08:59,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:08:59,211 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:08:59,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-06-27 18:09:00,290 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2024-06-27 18:09:00,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2024-06-27 18:09:00,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:09:00,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2024-06-27 18:09:01,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-06-27 18:09:01,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2024-06-27 18:09:01,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-06-27 18:09:01,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2024-06-27 18:09:01,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-06-27 18:09:01,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2024-06-27 18:09:01,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-06-27 18:09:01,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2024-06-27 18:09:01,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-06-27 18:09:01,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2024-06-27 18:09:01,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2024-06-27 18:09:01,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2024-06-27 18:09:01,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-06-27 18:09:01,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 3644 treesize of output 2301 [2024-06-27 18:09:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:09:03,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938987654] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-27 18:09:03,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-27 18:09:03,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 30 [2024-06-27 18:09:03,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341495678] [2024-06-27 18:09:03,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-27 18:09:03,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-27 18:09:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:09:03,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-27 18:09:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2024-06-27 18:09:03,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 53 [2024-06-27 18:09:03,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 1498 flow. Second operand has 31 states, 31 states have (on average 11.483870967741936) internal successors, (356), 31 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:03,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:09:03,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 53 [2024-06-27 18:09:03,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:09:06,798 INFO L124 PetriNetUnfolderBase]: 2377/4749 cut-off events. [2024-06-27 18:09:06,798 INFO L125 PetriNetUnfolderBase]: For 47157/47164 co-relation queries the response was YES. [2024-06-27 18:09:06,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21040 conditions, 4749 events. 2377/4749 cut-off events. For 47157/47164 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 28449 event pairs, 1354 based on Foata normal form. 17/4711 useless extension candidates. Maximal degree in co-relation 20986. Up to 3413 conditions per place. [2024-06-27 18:09:06,829 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 169 selfloop transitions, 38 changer transitions 4/216 dead transitions. [2024-06-27 18:09:06,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 216 transitions, 2300 flow [2024-06-27 18:09:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:09:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:09:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 239 transitions. [2024-06-27 18:09:06,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3468795355587808 [2024-06-27 18:09:06,832 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 1498 flow. Second operand 13 states and 239 transitions. [2024-06-27 18:09:06,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 216 transitions, 2300 flow [2024-06-27 18:09:06,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 216 transitions, 2231 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:09:06,935 INFO L231 Difference]: Finished difference. Result has 155 places, 152 transitions, 1597 flow [2024-06-27 18:09:06,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1597, PETRI_PLACES=155, PETRI_TRANSITIONS=152} [2024-06-27 18:09:06,936 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 106 predicate places. [2024-06-27 18:09:06,936 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 152 transitions, 1597 flow [2024-06-27 18:09:06,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 11.483870967741936) internal successors, (356), 31 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:09:06,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:09:06,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:06,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-27 18:09:07,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-06-27 18:09:07,148 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:09:07,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:09:07,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1822978610, now seen corresponding path program 1 times [2024-06-27 18:09:07,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:09:07,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120994689] [2024-06-27 18:09:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:09:07,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:09:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:09:07,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 18:09:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:09:07,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 18:09:07,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 18:09:07,279 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2024-06-27 18:09:07,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-06-27 18:09:07,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 9 remaining) [2024-06-27 18:09:07,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 9 remaining) [2024-06-27 18:09:07,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2024-06-27 18:09:07,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2024-06-27 18:09:07,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-06-27 18:09:07,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-06-27 18:09:07,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-06-27 18:09:07,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:09:07,283 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:09:07,290 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:09:07,290 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:09:07,330 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,331 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,331 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,331 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,331 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,331 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,331 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,332 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,332 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,332 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,332 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,332 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,332 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,332 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,333 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,334 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,335 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,335 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,335 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,335 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,335 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,335 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,335 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,336 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,336 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,336 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,336 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,336 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,336 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,336 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,337 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,338 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,338 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,338 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,338 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,338 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,338 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,338 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,339 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,340 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,340 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,340 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,340 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,340 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,340 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,340 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,341 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,342 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,342 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,342 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,342 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,342 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,342 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,342 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,343 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,343 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,343 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) [2024-06-27 18:09:07,349 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-06-27 18:09:07,358 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 18:09:07,358 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 18:09:07,359 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:09:07 BasicIcfg [2024-06-27 18:09:07,360 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:09:07,360 INFO L158 Benchmark]: Toolchain (without parser) took 102597.79ms. Allocated memory was 130.0MB in the beginning and 1.6GB in the end (delta: 1.5GB). Free memory was 69.1MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 434.5MB. Max. memory is 16.1GB. [2024-06-27 18:09:07,360 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 130.0MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:09:07,363 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:09:07,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 945.77ms. Allocated memory was 130.0MB in the beginning and 205.5MB in the end (delta: 75.5MB). Free memory was 68.9MB in the beginning and 147.1MB in the end (delta: -78.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-27 18:09:07,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.40ms. Allocated memory is still 205.5MB. Free memory was 146.1MB in the beginning and 140.8MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 18:09:07,364 INFO L158 Benchmark]: Boogie Preprocessor took 103.42ms. Allocated memory is still 205.5MB. Free memory was 140.8MB in the beginning and 134.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 18:09:07,364 INFO L158 Benchmark]: RCFGBuilder took 3414.23ms. Allocated memory was 205.5MB in the beginning and 308.3MB in the end (delta: 102.8MB). Free memory was 134.5MB in the beginning and 190.5MB in the end (delta: -56.1MB). Peak memory consumption was 185.0MB. Max. memory is 16.1GB. [2024-06-27 18:09:07,364 INFO L158 Benchmark]: TraceAbstraction took 98038.26ms. Allocated memory was 308.3MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 190.5MB in the beginning and 1.1GB in the end (delta: -948.0MB). Peak memory consumption was 375.3MB. Max. memory is 16.1GB. [2024-06-27 18:09:07,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 130.0MB. Free memory is still 91.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 945.77ms. Allocated memory was 130.0MB in the beginning and 205.5MB in the end (delta: 75.5MB). Free memory was 68.9MB in the beginning and 147.1MB in the end (delta: -78.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.40ms. Allocated memory is still 205.5MB. Free memory was 146.1MB in the beginning and 140.8MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 103.42ms. Allocated memory is still 205.5MB. Free memory was 140.8MB in the beginning and 134.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 3414.23ms. Allocated memory was 205.5MB in the beginning and 308.3MB in the end (delta: 102.8MB). Free memory was 134.5MB in the beginning and 190.5MB in the end (delta: -56.1MB). Peak memory consumption was 185.0MB. Max. memory is 16.1GB. * TraceAbstraction took 98038.26ms. Allocated memory was 308.3MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 190.5MB in the beginning and 1.1GB in the end (delta: -948.0MB). Peak memory consumption was 375.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Invalid location (Location is no CACSLLocation) - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1043]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int m_locked = 0; [L1] 0 //@ ghost int multithreaded = 0; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L947] 0 pthread_mutex_t m; [L949] 0 int stored_elements[(20)]; [L949] 0 int stored_elements[(20)]; [L950] 0 _Bool enqueue_flag, dequeue_flag; [L951] 0 QType queue; [L951] 0 QType queue; [L1054] 0 pthread_t id1, id2; [L1055] 0 enqueue_flag=(1) [L1056] 0 dequeue_flag=(0) [L1057] CALL 0 init(&queue) [L954] 0 q->head=0 [L955] 0 q->tail=0 [L956] 0 q->amount=0 [L1057] RET 0 init(&queue) [L1058] CALL, EXPR 0 empty(&queue) [L960] EXPR 0 q->head [L960] EXPR 0 q->tail [L960] COND TRUE 0 q->head == q->tail [L963] 0 return (-1); [L1058] RET, EXPR 0 empty(&queue) [L1058] COND FALSE 0 !(!empty(&queue)==(-1)) [L1063] 0 //@ ghost multithreaded = 1; VAL [dequeue_flag=0, enqueue_flag=1, id1=-1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1063] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1=-1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1007] 1 int value, i; VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 //@ assert (!multithreaded || ((((0 <= (queue).head) && (0 <= (queue).tail)) && ((queue).head <= 20)) && ((queue).tail <= 20))); [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).head [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail [L1064] 0 (queue).tail VAL [dequeue_flag=0, enqueue_flag=1, id1=-1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1008] 1 //@ ghost m_locked = 1; [L1009] 1 value = __VERIFIER_nondet_int() [L1010] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ [L981] 1 q->amount++ [L982] EXPR 1 q->tail [L982] COND FALSE 1 !(q->tail == (20)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ [L988] 1 q->tail++ [L990] 1 return 0; [L1010] RET 1 enqueue(&queue,value) [L1010] COND FALSE 1 !(enqueue(&queue,value)) [L1013] 1 stored_elements[0]=value [L1014] CALL 1 empty(&queue) [L960] EXPR 1 q->head [L960] EXPR 1 q->tail [L960] COND FALSE 1 !(q->head == q->tail) [L966] 1 return 0; [L1014] RET 1 empty(&queue) [L1014] COND FALSE 1 !(empty(&queue)) [L1017] 1 //@ ghost m_locked = 0; [L1064] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, &queue) VAL [dequeue_flag=0, enqueue_flag=1, id1=-1, id2=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1036] 2 int i; [L1037] 2 i=0 VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(20) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1039] 2 //@ ghost m_locked = 1; [L1040] COND FALSE 2 !(\read(dequeue_flag)) VAL [dequeue_flag=0, enqueue_flag=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1048] 2 //@ ghost m_locked = 0; [L1037] 2 i++ VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1037] COND TRUE 2 i<(20) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1018] 1 i=0 VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1018] COND TRUE 1 i<((20)-1) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=0, enqueue_flag=1, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=0] [L1020] 1 //@ ghost m_locked = 1; [L1021] COND TRUE 1 \read(enqueue_flag) [L1023] 1 value = __VERIFIER_nondet_int() [L1024] CALL 1 enqueue(&queue,value) [L980] EXPR 1 q->tail [L980] 1 q->element[q->tail] = x [L981] EXPR 1 q->amount [L981] 1 q->amount++ [L981] 1 q->amount++ [L982] EXPR 1 q->tail [L982] COND FALSE 1 !(q->tail == (20)) [L988] EXPR 1 q->tail [L988] 1 q->tail++ [L988] 1 q->tail++ [L990] 1 return 0; [L1024] RET 1 enqueue(&queue,value) [L1025] 1 stored_elements[i+1]=value [L1026] 1 enqueue_flag=(0) [L1027] 1 dequeue_flag=(1) VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=0, m={3:0}, queue={5:0}, stored_elements={4:0}, value=1] [L1029] 1 //@ ghost m_locked = 0; [L1039] 2 //@ ghost m_locked = 1; [L1040] COND TRUE 2 \read(dequeue_flag) [L1042] CALL, EXPR 2 dequeue(&queue) [L994] 2 int x; [L995] EXPR 2 q->head [L995] EXPR 2 q->element[q->head] [L995] 2 x = q->element[q->head] [L996] EXPR 2 q->amount [L996] 2 q->amount-- [L996] 2 q->amount-- [L997] EXPR 2 q->head [L997] COND FALSE 2 !(q->head == (20)) [L1002] EXPR 2 q->head [L1002] 2 q->head++ [L1002] 2 q->head++ [L1003] 2 return x; [L1042] RET, EXPR 2 dequeue(&queue) [L1042] EXPR 2 stored_elements[i] VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] [L1042] COND TRUE 2 !dequeue(&queue)==stored_elements[i] [L1043] 2 reach_error() VAL [\old(arg)={5:0}, arg={5:0}, dequeue_flag=1, enqueue_flag=0, i=1, m={3:0}, queue={5:0}, stored_elements={4:0}] - UnprovableResult [Line: 1059]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 77 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 97.8s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1710 SdHoareTripleChecker+Valid, 11.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1680 mSDsluCounter, 742 SdHoareTripleChecker+Invalid, 10.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 148 IncrementalHoareTripleChecker+Unchecked, 719 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7718 IncrementalHoareTripleChecker+Invalid, 7958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 23 mSDtfsCounter, 7718 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 161 SyntacticMatches, 7 SemanticMatches, 180 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 48.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1597occurred in iteration=16, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 70.8s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 515 ConstructedInterpolants, 93 QuantifiedInterpolants, 60514 SizeOfPredicates, 161 NumberOfNonLiveVariables, 1454 ConjunctsInSsa, 147 ConjunctsInUnsatCore, 24 InterpolantComputations, 12 PerfectInterpolantSequences, 0/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-27 18:09:07,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE