./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe000_rmo.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe000_rmo.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-wmm/safe000_rmo.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe000_rmo.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 22:35:15,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:35:15,933 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:35:15,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:35:15,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:35:15,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:35:15,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:35:15,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:35:15,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:35:15,976 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:35:15,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:35:15,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:35:15,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:35:15,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:35:15,978 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:35:15,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:35:15,978 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:35:15,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:35:15,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:35:15,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:35:15,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:35:15,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:35:15,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:35:15,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:35:15,981 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:35:15,981 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:35:15,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:35:15,982 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:35:15,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:35:15,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:35:15,982 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:35:15,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:35:15,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:35:15,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:35:15,984 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:35:15,984 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:35:15,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:35:15,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:35:15,985 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:35:15,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:35:15,985 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:35:15,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:35:15,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:35:15,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:35:16,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:35:16,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:35:16,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:35:16,232 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:35:16,233 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:35:16,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe000_rmo.yml/witness.yml [2024-06-27 22:35:16,306 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:35:16,308 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:35:16,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_rmo.i [2024-06-27 22:35:17,361 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:35:17,532 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:35:17,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_rmo.i [2024-06-27 22:35:17,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55a1e6467/3c8ce17b527b4331a351f84998469b9a/FLAG20beae409 [2024-06-27 22:35:17,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55a1e6467/3c8ce17b527b4331a351f84998469b9a [2024-06-27 22:35:17,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:35:17,555 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:35:17,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:35:17,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:35:17,559 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:35:17,560 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:35:16" (1/2) ... [2024-06-27 22:35:17,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5869fe3c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:35:17, skipping insertion in model container [2024-06-27 22:35:17,561 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:35:16" (1/2) ... [2024-06-27 22:35:17,561 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6548b87e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:35:17, skipping insertion in model container [2024-06-27 22:35:17,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:35:17" (2/2) ... [2024-06-27 22:35:17,562 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5869fe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:17, skipping insertion in model container [2024-06-27 22:35:17,562 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:35:17" (2/2) ... [2024-06-27 22:35:17,562 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:35:17,580 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:35:17,581 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:35:17,581 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:35:17,581 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$flush_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$mem_tmp) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff0_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd2) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$r_buff1_thd3) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff0_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p0_EAX$w_buff1_used) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1_used >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX$read_delayed) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )weak$$choice2 >= 0LL) [2024-06-27 22:35:17,581 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:35:17,581 INFO L106 edCorrectnessWitness]: ghost_update [L853-L853] multithreaded = 1; [2024-06-27 22:35:17,610 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:35:17,727 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-wmm/safe000_rmo.i[988,1001] [2024-06-27 22:35:17,872 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:35:17,889 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:35:17,924 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-wmm/safe000_rmo.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:35:18,076 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:35:18,105 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:35:18,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18 WrapperNode [2024-06-27 22:35:18,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:35:18,107 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:35:18,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:35:18,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:35:18,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,189 INFO L138 Inliner]: procedures = 175, calls = 73, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 178 [2024-06-27 22:35:18,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:35:18,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:35:18,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:35:18,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:35:18,200 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,200 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,214 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,263 INFO L175 MemorySlicer]: Split 33 memory accesses to 2 slices as follows [2, 31]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-06-27 22:35:18,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:35:18,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:35:18,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:35:18,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:35:18,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (1/1) ... [2024-06-27 22:35:18,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:35:18,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:35:18,368 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 22:35:18,433 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 22:35:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:35:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:35:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:35:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:35:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:35:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:35:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:35:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:35:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:35:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:35:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:35:18,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:35:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:35:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:35:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:35:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:35:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:35:18,472 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 22:35:18,591 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:35:18,593 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:35:19,182 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:35:19,183 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:35:19,465 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:35:19,465 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:35:19,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:35:19 BoogieIcfgContainer [2024-06-27 22:35:19,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:35:19,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:35:19,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:35:19,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:35:19,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:35:16" (1/4) ... [2024-06-27 22:35:19,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9f8f2d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:35:19, skipping insertion in model container [2024-06-27 22:35:19,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:35:17" (2/4) ... [2024-06-27 22:35:19,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9f8f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:35:19, skipping insertion in model container [2024-06-27 22:35:19,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:35:18" (3/4) ... [2024-06-27 22:35:19,476 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9f8f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:35:19, skipping insertion in model container [2024-06-27 22:35:19,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:35:19" (4/4) ... [2024-06-27 22:35:19,477 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_rmo.i [2024-06-27 22:35:19,492 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:35:19,493 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:35:19,493 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:35:19,576 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:35:19,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:35:19,644 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:35:19,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:35:19,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:35:19,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:35:19,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-27 22:35:19,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:35:19,672 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;@745938fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:35:19,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:35:19,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:35:19,679 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:35:19,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:35:19,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:19,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:35:19,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:19,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 709103282, now seen corresponding path program 1 times [2024-06-27 22:35:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:19,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934828732] [2024-06-27 22:35:19,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:21,583 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 22:35:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934828732] [2024-06-27 22:35:21,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934828732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:21,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:21,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:35:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040540027] [2024-06-27 22:35:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:21,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:35:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:21,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:35:21,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:35:21,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:35:21,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 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 22:35:21,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:21,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:35:21,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:22,594 INFO L124 PetriNetUnfolderBase]: 3350/5168 cut-off events. [2024-06-27 22:35:22,594 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 22:35:22,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10083 conditions, 5168 events. 3350/5168 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29228 event pairs, 2161 based on Foata normal form. 0/4987 useless extension candidates. Maximal degree in co-relation 10071. Up to 4834 conditions per place. [2024-06-27 22:35:22,622 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 45 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 22:35:22,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 58 transitions, 231 flow [2024-06-27 22:35:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:35:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:35:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-06-27 22:35:22,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2024-06-27 22:35:22,633 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 89 transitions. [2024-06-27 22:35:22,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 58 transitions, 231 flow [2024-06-27 22:35:22,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:22,641 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-27 22:35:22,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 22:35:22,694 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-27 22:35:22,694 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-27 22:35:22,695 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 22:35:22,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:22,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:22,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:35:22,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:22,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1450287139, now seen corresponding path program 1 times [2024-06-27 22:35:22,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:22,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566350001] [2024-06-27 22:35:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:22,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:24,975 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 22:35:24,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:24,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566350001] [2024-06-27 22:35:24,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566350001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:24,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:24,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:35:24,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613282822] [2024-06-27 22:35:24,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:24,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:35:24,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:24,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:35:24,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:35:24,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:35:24,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 22:35:24,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:24,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:35:24,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:26,116 INFO L124 PetriNetUnfolderBase]: 4120/6047 cut-off events. [2024-06-27 22:35:26,117 INFO L125 PetriNetUnfolderBase]: For 1083/1086 co-relation queries the response was YES. [2024-06-27 22:35:26,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13434 conditions, 6047 events. 4120/6047 cut-off events. For 1083/1086 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 33430 event pairs, 1564 based on Foata normal form. 9/6052 useless extension candidates. Maximal degree in co-relation 13422. Up to 5696 conditions per place. [2024-06-27 22:35:26,145 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 70 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2024-06-27 22:35:26,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 88 transitions, 399 flow [2024-06-27 22:35:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:35:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:35:26,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-27 22:35:26,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-27 22:35:26,149 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 124 transitions. [2024-06-27 22:35:26,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 88 transitions, 399 flow [2024-06-27 22:35:26,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 88 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:35:26,156 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 194 flow [2024-06-27 22:35:26,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-06-27 22:35:26,158 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-27 22:35:26,158 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 194 flow [2024-06-27 22:35:26,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 22:35:26,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:26,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:35:26,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:26,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2009226786, now seen corresponding path program 1 times [2024-06-27 22:35:26,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824544424] [2024-06-27 22:35:26,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:26,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:28,779 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 22:35:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824544424] [2024-06-27 22:35:28,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824544424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:28,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:28,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:35:28,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292112927] [2024-06-27 22:35:28,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:28,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:35:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:28,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:35:28,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:35:28,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:35:28,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 22:35:28,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:28,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:35:28,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:30,066 INFO L124 PetriNetUnfolderBase]: 4113/6008 cut-off events. [2024-06-27 22:35:30,066 INFO L125 PetriNetUnfolderBase]: For 3103/3103 co-relation queries the response was YES. [2024-06-27 22:35:30,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15396 conditions, 6008 events. 4113/6008 cut-off events. For 3103/3103 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 32541 event pairs, 1311 based on Foata normal form. 4/6010 useless extension candidates. Maximal degree in co-relation 15381. Up to 5777 conditions per place. [2024-06-27 22:35:30,097 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 95 selfloop transitions, 11 changer transitions 0/113 dead transitions. [2024-06-27 22:35:30,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 113 transitions, 585 flow [2024-06-27 22:35:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:35:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:35:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 22:35:30,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-27 22:35:30,102 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 194 flow. Second operand 5 states and 150 transitions. [2024-06-27 22:35:30,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 113 transitions, 585 flow [2024-06-27 22:35:30,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 113 transitions, 585 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:35:30,107 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 297 flow [2024-06-27 22:35:30,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-27 22:35:30,108 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-06-27 22:35:30,108 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 297 flow [2024-06-27 22:35:30,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 22:35:30,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:30,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:30,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:35:30,109 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:30,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash 155401001, now seen corresponding path program 1 times [2024-06-27 22:35:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:30,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635603407] [2024-06-27 22:35:30,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:30,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:32,537 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 22:35:32,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:32,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635603407] [2024-06-27 22:35:32,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635603407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:32,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:32,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:35:32,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690216025] [2024-06-27 22:35:32,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:32,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:35:32,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:32,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:35:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:35:32,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 22:35:32,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 22:35:32,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:32,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 22:35:32,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:33,980 INFO L124 PetriNetUnfolderBase]: 4102/5991 cut-off events. [2024-06-27 22:35:33,980 INFO L125 PetriNetUnfolderBase]: For 4906/4906 co-relation queries the response was YES. [2024-06-27 22:35:33,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16716 conditions, 5991 events. 4102/5991 cut-off events. For 4906/4906 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 32505 event pairs, 896 based on Foata normal form. 8/5997 useless extension candidates. Maximal degree in co-relation 16696. Up to 5650 conditions per place. [2024-06-27 22:35:34,014 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 107 selfloop transitions, 13 changer transitions 0/127 dead transitions. [2024-06-27 22:35:34,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 127 transitions, 709 flow [2024-06-27 22:35:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:35:34,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:35:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-27 22:35:34,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-06-27 22:35:34,017 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 297 flow. Second operand 6 states and 175 transitions. [2024-06-27 22:35:34,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 127 transitions, 709 flow [2024-06-27 22:35:34,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 127 transitions, 705 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:35:34,024 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 334 flow [2024-06-27 22:35:34,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 22:35:34,025 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-06-27 22:35:34,025 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 334 flow [2024-06-27 22:35:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 22:35:34,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:34,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:35:34,026 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:34,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash -383853399, now seen corresponding path program 1 times [2024-06-27 22:35:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:34,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49644918] [2024-06-27 22:35:34,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:34,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:36,555 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 22:35:36,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:36,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49644918] [2024-06-27 22:35:36,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49644918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:36,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:36,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:35:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157953312] [2024-06-27 22:35:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:36,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:35:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:35:36,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:35:36,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:36,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 22:35:36,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:36,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:36,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:38,107 INFO L124 PetriNetUnfolderBase]: 4100/6289 cut-off events. [2024-06-27 22:35:38,108 INFO L125 PetriNetUnfolderBase]: For 7642/7642 co-relation queries the response was YES. [2024-06-27 22:35:38,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17842 conditions, 6289 events. 4100/6289 cut-off events. For 7642/7642 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 35821 event pairs, 2440 based on Foata normal form. 2/6288 useless extension candidates. Maximal degree in co-relation 17818. Up to 5825 conditions per place. [2024-06-27 22:35:38,139 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 82 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-06-27 22:35:38,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 109 transitions, 695 flow [2024-06-27 22:35:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:35:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:35:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 22:35:38,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:35:38,144 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 334 flow. Second operand 6 states and 144 transitions. [2024-06-27 22:35:38,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 109 transitions, 695 flow [2024-06-27 22:35:38,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 660 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:38,148 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 455 flow [2024-06-27 22:35:38,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-06-27 22:35:38,149 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2024-06-27 22:35:38,149 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 455 flow [2024-06-27 22:35:38,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 22:35:38,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:38,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:38,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:35:38,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:38,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 257736505, now seen corresponding path program 1 times [2024-06-27 22:35:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:38,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787143640] [2024-06-27 22:35:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:40,350 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 22:35:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:40,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787143640] [2024-06-27 22:35:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787143640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:35:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716147108] [2024-06-27 22:35:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:35:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:35:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:35:40,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:40,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 22:35:40,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:40,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:40,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:41,737 INFO L124 PetriNetUnfolderBase]: 4093/6202 cut-off events. [2024-06-27 22:35:41,737 INFO L125 PetriNetUnfolderBase]: For 9537/9537 co-relation queries the response was YES. [2024-06-27 22:35:41,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19307 conditions, 6202 events. 4093/6202 cut-off events. For 9537/9537 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 34871 event pairs, 2108 based on Foata normal form. 4/6202 useless extension candidates. Maximal degree in co-relation 19277. Up to 5662 conditions per place. [2024-06-27 22:35:41,776 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 83 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-27 22:35:41,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 762 flow [2024-06-27 22:35:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:35:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:35:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 22:35:41,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:35:41,778 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 455 flow. Second operand 5 states and 125 transitions. [2024-06-27 22:35:41,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 762 flow [2024-06-27 22:35:41,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 758 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:35:41,786 INFO L231 Difference]: Finished difference. Result has 78 places, 79 transitions, 522 flow [2024-06-27 22:35:41,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=78, PETRI_TRANSITIONS=79} [2024-06-27 22:35:41,787 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 27 predicate places. [2024-06-27 22:35:41,787 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 79 transitions, 522 flow [2024-06-27 22:35:41,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 22:35:41,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:41,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:41,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:35:41,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:41,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 985447639, now seen corresponding path program 1 times [2024-06-27 22:35:41,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:41,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970123190] [2024-06-27 22:35:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:41,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:44,836 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 22:35:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970123190] [2024-06-27 22:35:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970123190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:44,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:44,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:35:44,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436692144] [2024-06-27 22:35:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:35:44,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:44,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:35:44,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:35:44,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:44,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 79 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 22:35:44,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:44,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:44,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:46,306 INFO L124 PetriNetUnfolderBase]: 4088/6273 cut-off events. [2024-06-27 22:35:46,306 INFO L125 PetriNetUnfolderBase]: For 11349/11349 co-relation queries the response was YES. [2024-06-27 22:35:46,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19876 conditions, 6273 events. 4088/6273 cut-off events. For 11349/11349 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 35777 event pairs, 2412 based on Foata normal form. 2/6273 useless extension candidates. Maximal degree in co-relation 19840. Up to 5811 conditions per place. [2024-06-27 22:35:46,341 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 85 selfloop transitions, 19 changer transitions 0/110 dead transitions. [2024-06-27 22:35:46,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 110 transitions, 808 flow [2024-06-27 22:35:46,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:35:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:35:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:35:46,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:35:46,343 INFO L175 Difference]: Start difference. First operand has 78 places, 79 transitions, 522 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:35:46,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 110 transitions, 808 flow [2024-06-27 22:35:46,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 110 transitions, 783 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 22:35:46,353 INFO L231 Difference]: Finished difference. Result has 82 places, 79 transitions, 549 flow [2024-06-27 22:35:46,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=549, PETRI_PLACES=82, PETRI_TRANSITIONS=79} [2024-06-27 22:35:46,353 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-06-27 22:35:46,353 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 79 transitions, 549 flow [2024-06-27 22:35:46,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 22:35:46,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:46,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:46,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:35:46,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:46,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1070273894, now seen corresponding path program 1 times [2024-06-27 22:35:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415733966] [2024-06-27 22:35:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:50,039 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 22:35:50,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:50,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415733966] [2024-06-27 22:35:50,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415733966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:50,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:50,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614811891] [2024-06-27 22:35:50,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:50,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:50,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:50,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 549 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 22:35:50,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:50,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:50,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:51,946 INFO L124 PetriNetUnfolderBase]: 4262/6465 cut-off events. [2024-06-27 22:35:51,946 INFO L125 PetriNetUnfolderBase]: For 12760/12760 co-relation queries the response was YES. [2024-06-27 22:35:51,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20769 conditions, 6465 events. 4262/6465 cut-off events. For 12760/12760 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36600 event pairs, 1996 based on Foata normal form. 3/6466 useless extension candidates. Maximal degree in co-relation 20730. Up to 5807 conditions per place. [2024-06-27 22:35:51,987 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 152 selfloop transitions, 28 changer transitions 0/186 dead transitions. [2024-06-27 22:35:51,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 186 transitions, 1321 flow [2024-06-27 22:35:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:35:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:35:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-27 22:35:51,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791962174940898 [2024-06-27 22:35:51,989 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 549 flow. Second operand 9 states and 245 transitions. [2024-06-27 22:35:51,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 186 transitions, 1321 flow [2024-06-27 22:35:52,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 186 transitions, 1289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 22:35:52,008 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 681 flow [2024-06-27 22:35:52,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=681, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2024-06-27 22:35:52,011 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-27 22:35:52,012 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 681 flow [2024-06-27 22:35:52,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 22:35:52,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:52,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:52,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:35:52,012 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:52,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash 882504804, now seen corresponding path program 2 times [2024-06-27 22:35:52,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:52,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401327778] [2024-06-27 22:35:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:54,436 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 22:35:54,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:54,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401327778] [2024-06-27 22:35:54,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401327778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:54,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:54,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:54,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211674466] [2024-06-27 22:35:54,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:54,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:54,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:54,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:54,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:54,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 681 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 22:35:54,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:54,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:54,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:35:56,532 INFO L124 PetriNetUnfolderBase]: 5075/7638 cut-off events. [2024-06-27 22:35:56,533 INFO L125 PetriNetUnfolderBase]: For 19901/19901 co-relation queries the response was YES. [2024-06-27 22:35:56,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26228 conditions, 7638 events. 5075/7638 cut-off events. For 19901/19901 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 43141 event pairs, 2040 based on Foata normal form. 39/7673 useless extension candidates. Maximal degree in co-relation 26187. Up to 6046 conditions per place. [2024-06-27 22:35:56,569 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 128 selfloop transitions, 45 changer transitions 0/179 dead transitions. [2024-06-27 22:35:56,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 179 transitions, 1411 flow [2024-06-27 22:35:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:35:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:35:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:35:56,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-06-27 22:35:56,571 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 681 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:35:56,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 179 transitions, 1411 flow [2024-06-27 22:35:56,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 179 transitions, 1364 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:35:56,589 INFO L231 Difference]: Finished difference. Result has 96 places, 110 transitions, 899 flow [2024-06-27 22:35:56,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=899, PETRI_PLACES=96, PETRI_TRANSITIONS=110} [2024-06-27 22:35:56,590 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 45 predicate places. [2024-06-27 22:35:56,590 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 110 transitions, 899 flow [2024-06-27 22:35:56,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 22:35:56,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:35:56,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:35:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:35:56,591 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:35:56,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:35:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash 484097960, now seen corresponding path program 1 times [2024-06-27 22:35:56,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:35:56,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226849703] [2024-06-27 22:35:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:35:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:35:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:35:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:35:59,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:35:59,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226849703] [2024-06-27 22:35:59,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226849703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:35:59,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:35:59,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:35:59,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519353459] [2024-06-27 22:35:59,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:35:59,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:35:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:35:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:35:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:35:59,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:35:59,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 110 transitions, 899 flow. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 22:35:59,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:35:59,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:35:59,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:01,611 INFO L124 PetriNetUnfolderBase]: 5075/7675 cut-off events. [2024-06-27 22:36:01,612 INFO L125 PetriNetUnfolderBase]: For 29292/29292 co-relation queries the response was YES. [2024-06-27 22:36:01,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30742 conditions, 7675 events. 5075/7675 cut-off events. For 29292/29292 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 43717 event pairs, 2094 based on Foata normal form. 4/7675 useless extension candidates. Maximal degree in co-relation 30696. Up to 6938 conditions per place. [2024-06-27 22:36:01,679 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 140 selfloop transitions, 35 changer transitions 0/181 dead transitions. [2024-06-27 22:36:01,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 181 transitions, 1649 flow [2024-06-27 22:36:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:36:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:36:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:36:01,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 22:36:01,681 INFO L175 Difference]: Start difference. First operand has 96 places, 110 transitions, 899 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:36:01,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 181 transitions, 1649 flow [2024-06-27 22:36:01,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 181 transitions, 1559 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 22:36:01,734 INFO L231 Difference]: Finished difference. Result has 102 places, 130 transitions, 1166 flow [2024-06-27 22:36:01,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1166, PETRI_PLACES=102, PETRI_TRANSITIONS=130} [2024-06-27 22:36:01,736 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 51 predicate places. [2024-06-27 22:36:01,736 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 130 transitions, 1166 flow [2024-06-27 22:36:01,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 22:36:01,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:01,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:01,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:36:01,737 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:01,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash 484106888, now seen corresponding path program 1 times [2024-06-27 22:36:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:01,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449414340] [2024-06-27 22:36:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:05,010 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 22:36:05,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:05,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449414340] [2024-06-27 22:36:05,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449414340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:05,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:05,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:36:05,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49434012] [2024-06-27 22:36:05,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:05,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:36:05,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:36:05,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:36:05,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:05,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 130 transitions, 1166 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:05,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:05,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:05,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:07,007 INFO L124 PetriNetUnfolderBase]: 5067/7740 cut-off events. [2024-06-27 22:36:07,007 INFO L125 PetriNetUnfolderBase]: For 34128/34128 co-relation queries the response was YES. [2024-06-27 22:36:07,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31814 conditions, 7740 events. 5067/7740 cut-off events. For 34128/34128 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 44871 event pairs, 2470 based on Foata normal form. 4/7742 useless extension candidates. Maximal degree in co-relation 31763. Up to 7109 conditions per place. [2024-06-27 22:36:07,057 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 146 selfloop transitions, 22 changer transitions 0/174 dead transitions. [2024-06-27 22:36:07,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 174 transitions, 1654 flow [2024-06-27 22:36:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:36:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:36:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-27 22:36:07,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627659574468085 [2024-06-27 22:36:07,060 INFO L175 Difference]: Start difference. First operand has 102 places, 130 transitions, 1166 flow. Second operand 8 states and 174 transitions. [2024-06-27 22:36:07,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 174 transitions, 1654 flow [2024-06-27 22:36:07,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 174 transitions, 1642 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:36:07,091 INFO L231 Difference]: Finished difference. Result has 109 places, 133 transitions, 1246 flow [2024-06-27 22:36:07,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1246, PETRI_PLACES=109, PETRI_TRANSITIONS=133} [2024-06-27 22:36:07,092 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 58 predicate places. [2024-06-27 22:36:07,092 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 133 transitions, 1246 flow [2024-06-27 22:36:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:07,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:07,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:07,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:36:07,093 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:07,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1181246565, now seen corresponding path program 1 times [2024-06-27 22:36:07,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:07,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194002280] [2024-06-27 22:36:07,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:07,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:10,427 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 22:36:10,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:10,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194002280] [2024-06-27 22:36:10,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194002280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:10,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:10,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606434395] [2024-06-27 22:36:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:10,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:10,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 133 transitions, 1246 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:10,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:10,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:10,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:13,498 INFO L124 PetriNetUnfolderBase]: 6423/9636 cut-off events. [2024-06-27 22:36:13,498 INFO L125 PetriNetUnfolderBase]: For 44000/44000 co-relation queries the response was YES. [2024-06-27 22:36:13,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40684 conditions, 9636 events. 6423/9636 cut-off events. For 44000/44000 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 56302 event pairs, 1942 based on Foata normal form. 14/9648 useless extension candidates. Maximal degree in co-relation 40630. Up to 7700 conditions per place. [2024-06-27 22:36:13,676 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 247 selfloop transitions, 79 changer transitions 0/332 dead transitions. [2024-06-27 22:36:13,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 332 transitions, 3076 flow [2024-06-27 22:36:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 22:36:13,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 22:36:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 357 transitions. [2024-06-27 22:36:13,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5842880523731587 [2024-06-27 22:36:13,679 INFO L175 Difference]: Start difference. First operand has 109 places, 133 transitions, 1246 flow. Second operand 13 states and 357 transitions. [2024-06-27 22:36:13,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 332 transitions, 3076 flow [2024-06-27 22:36:13,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 332 transitions, 2994 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:13,734 INFO L231 Difference]: Finished difference. Result has 122 places, 194 transitions, 2037 flow [2024-06-27 22:36:13,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2037, PETRI_PLACES=122, PETRI_TRANSITIONS=194} [2024-06-27 22:36:13,734 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 71 predicate places. [2024-06-27 22:36:13,734 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 194 transitions, 2037 flow [2024-06-27 22:36:13,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:13,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:13,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:13,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:36:13,735 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2048399671, now seen corresponding path program 2 times [2024-06-27 22:36:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:13,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592026543] [2024-06-27 22:36:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:13,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:17,269 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 22:36:17,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:17,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592026543] [2024-06-27 22:36:17,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592026543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:17,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:17,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518421141] [2024-06-27 22:36:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:17,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:17,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:17,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:17,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:17,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 194 transitions, 2037 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:17,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:17,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:17,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:20,241 INFO L124 PetriNetUnfolderBase]: 6433/9738 cut-off events. [2024-06-27 22:36:20,241 INFO L125 PetriNetUnfolderBase]: For 65526/65526 co-relation queries the response was YES. [2024-06-27 22:36:20,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46734 conditions, 9738 events. 6433/9738 cut-off events. For 65526/65526 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 57837 event pairs, 2235 based on Foata normal form. 4/9738 useless extension candidates. Maximal degree in co-relation 46675. Up to 8439 conditions per place. [2024-06-27 22:36:20,308 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 239 selfloop transitions, 69 changer transitions 0/314 dead transitions. [2024-06-27 22:36:20,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 314 transitions, 3372 flow [2024-06-27 22:36:20,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:20,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2024-06-27 22:36:20,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49709864603481624 [2024-06-27 22:36:20,321 INFO L175 Difference]: Start difference. First operand has 122 places, 194 transitions, 2037 flow. Second operand 11 states and 257 transitions. [2024-06-27 22:36:20,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 314 transitions, 3372 flow [2024-06-27 22:36:20,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 314 transitions, 3152 flow, removed 90 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:20,429 INFO L231 Difference]: Finished difference. Result has 130 places, 220 transitions, 2313 flow [2024-06-27 22:36:20,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2313, PETRI_PLACES=130, PETRI_TRANSITIONS=220} [2024-06-27 22:36:20,429 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 79 predicate places. [2024-06-27 22:36:20,429 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 220 transitions, 2313 flow [2024-06-27 22:36:20,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:20,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:20,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:20,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:36:20,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:20,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1991004330, now seen corresponding path program 1 times [2024-06-27 22:36:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:20,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059272946] [2024-06-27 22:36:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:20,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:22,735 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 22:36:22,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:22,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059272946] [2024-06-27 22:36:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059272946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:22,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:22,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:36:22,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451610629] [2024-06-27 22:36:22,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:36:22,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:22,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:36:22,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:36:22,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:22,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 220 transitions, 2313 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 22:36:22,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:22,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:22,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:24,760 INFO L124 PetriNetUnfolderBase]: 6576/9886 cut-off events. [2024-06-27 22:36:24,761 INFO L125 PetriNetUnfolderBase]: For 75125/75125 co-relation queries the response was YES. [2024-06-27 22:36:24,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49115 conditions, 9886 events. 6576/9886 cut-off events. For 75125/75125 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 58254 event pairs, 2299 based on Foata normal form. 1/9880 useless extension candidates. Maximal degree in co-relation 49052. Up to 8911 conditions per place. [2024-06-27 22:36:24,824 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 219 selfloop transitions, 61 changer transitions 0/286 dead transitions. [2024-06-27 22:36:24,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 286 transitions, 3481 flow [2024-06-27 22:36:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:36:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:36:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-27 22:36:24,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5702127659574469 [2024-06-27 22:36:24,826 INFO L175 Difference]: Start difference. First operand has 130 places, 220 transitions, 2313 flow. Second operand 5 states and 134 transitions. [2024-06-27 22:36:24,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 286 transitions, 3481 flow [2024-06-27 22:36:24,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 286 transitions, 3329 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:24,936 INFO L231 Difference]: Finished difference. Result has 131 places, 249 transitions, 2781 flow [2024-06-27 22:36:24,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2175, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2781, PETRI_PLACES=131, PETRI_TRANSITIONS=249} [2024-06-27 22:36:24,937 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-27 22:36:24,937 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 249 transitions, 2781 flow [2024-06-27 22:36:24,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 22:36:24,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:24,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:24,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:36:24,938 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:24,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:24,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1756625551, now seen corresponding path program 1 times [2024-06-27 22:36:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:24,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279608548] [2024-06-27 22:36:24,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:24,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:28,479 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 22:36:28,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:28,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279608548] [2024-06-27 22:36:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279608548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:28,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:28,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:28,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461122037] [2024-06-27 22:36:28,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:28,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:28,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 249 transitions, 2781 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:28,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:28,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:28,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:31,135 INFO L124 PetriNetUnfolderBase]: 6754/10104 cut-off events. [2024-06-27 22:36:31,135 INFO L125 PetriNetUnfolderBase]: For 80417/80417 co-relation queries the response was YES. [2024-06-27 22:36:31,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51172 conditions, 10104 events. 6754/10104 cut-off events. For 80417/80417 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 59345 event pairs, 1716 based on Foata normal form. 6/10107 useless extension candidates. Maximal degree in co-relation 51105. Up to 9038 conditions per place. [2024-06-27 22:36:31,216 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 301 selfloop transitions, 30 changer transitions 0/337 dead transitions. [2024-06-27 22:36:31,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 337 transitions, 3889 flow [2024-06-27 22:36:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:36:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:36:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-27 22:36:31,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-27 22:36:31,218 INFO L175 Difference]: Start difference. First operand has 131 places, 249 transitions, 2781 flow. Second operand 9 states and 232 transitions. [2024-06-27 22:36:31,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 337 transitions, 3889 flow [2024-06-27 22:36:31,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 337 transitions, 3808 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-27 22:36:31,366 INFO L231 Difference]: Finished difference. Result has 139 places, 256 transitions, 2838 flow [2024-06-27 22:36:31,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2838, PETRI_PLACES=139, PETRI_TRANSITIONS=256} [2024-06-27 22:36:31,367 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 88 predicate places. [2024-06-27 22:36:31,367 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 256 transitions, 2838 flow [2024-06-27 22:36:31,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:31,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:31,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:31,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:36:31,368 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:31,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1697532239, now seen corresponding path program 2 times [2024-06-27 22:36:31,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:31,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088114013] [2024-06-27 22:36:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:34,886 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 22:36:34,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:34,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088114013] [2024-06-27 22:36:34,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088114013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:34,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:34,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:34,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778342771] [2024-06-27 22:36:34,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:34,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:34,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:34,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:34,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:34,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 256 transitions, 2838 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:34,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:34,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:34,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:37,784 INFO L124 PetriNetUnfolderBase]: 7307/10991 cut-off events. [2024-06-27 22:36:37,784 INFO L125 PetriNetUnfolderBase]: For 98220/98224 co-relation queries the response was YES. [2024-06-27 22:36:37,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57079 conditions, 10991 events. 7307/10991 cut-off events. For 98220/98224 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 65992 event pairs, 2267 based on Foata normal form. 10/10998 useless extension candidates. Maximal degree in co-relation 57009. Up to 9576 conditions per place. [2024-06-27 22:36:37,877 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 324 selfloop transitions, 42 changer transitions 0/372 dead transitions. [2024-06-27 22:36:37,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 372 transitions, 4342 flow [2024-06-27 22:36:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:36:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:36:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 22:36:37,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-06-27 22:36:37,885 INFO L175 Difference]: Start difference. First operand has 139 places, 256 transitions, 2838 flow. Second operand 10 states and 262 transitions. [2024-06-27 22:36:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 372 transitions, 4342 flow [2024-06-27 22:36:38,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 372 transitions, 4224 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:36:38,081 INFO L231 Difference]: Finished difference. Result has 146 places, 276 transitions, 3096 flow [2024-06-27 22:36:38,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2767, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3096, PETRI_PLACES=146, PETRI_TRANSITIONS=276} [2024-06-27 22:36:38,082 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 95 predicate places. [2024-06-27 22:36:38,082 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 276 transitions, 3096 flow [2024-06-27 22:36:38,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:38,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:38,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:38,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:36:38,083 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:38,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:38,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2017289979, now seen corresponding path program 3 times [2024-06-27 22:36:38,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054487530] [2024-06-27 22:36:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:38,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:42,162 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 22:36:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054487530] [2024-06-27 22:36:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054487530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:42,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:42,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:42,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557485564] [2024-06-27 22:36:42,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:42,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:42,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:42,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 276 transitions, 3096 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:42,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:42,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:42,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:44,995 INFO L124 PetriNetUnfolderBase]: 7337/11061 cut-off events. [2024-06-27 22:36:44,995 INFO L125 PetriNetUnfolderBase]: For 109360/109366 co-relation queries the response was YES. [2024-06-27 22:36:45,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58839 conditions, 11061 events. 7337/11061 cut-off events. For 109360/109366 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 66833 event pairs, 2473 based on Foata normal form. 12/11070 useless extension candidates. Maximal degree in co-relation 58765. Up to 10025 conditions per place. [2024-06-27 22:36:45,094 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 315 selfloop transitions, 34 changer transitions 0/355 dead transitions. [2024-06-27 22:36:45,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 355 transitions, 4229 flow [2024-06-27 22:36:45,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:36:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:36:45,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-27 22:36:45,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904255319148937 [2024-06-27 22:36:45,096 INFO L175 Difference]: Start difference. First operand has 146 places, 276 transitions, 3096 flow. Second operand 8 states and 222 transitions. [2024-06-27 22:36:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 355 transitions, 4229 flow [2024-06-27 22:36:45,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 355 transitions, 4108 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-27 22:36:45,363 INFO L231 Difference]: Finished difference. Result has 150 places, 279 transitions, 3113 flow [2024-06-27 22:36:45,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3113, PETRI_PLACES=150, PETRI_TRANSITIONS=279} [2024-06-27 22:36:45,364 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 99 predicate places. [2024-06-27 22:36:45,364 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 279 transitions, 3113 flow [2024-06-27 22:36:45,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:45,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:45,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:45,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:36:45,365 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:45,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1860441121, now seen corresponding path program 4 times [2024-06-27 22:36:45,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:45,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018489314] [2024-06-27 22:36:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:45,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:49,136 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 22:36:49,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:49,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018489314] [2024-06-27 22:36:49,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018489314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:49,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:49,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:49,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329558517] [2024-06-27 22:36:49,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:49,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:49,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:49,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:49,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:49,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:49,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 279 transitions, 3113 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:49,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:49,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:49,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:52,092 INFO L124 PetriNetUnfolderBase]: 7526/11301 cut-off events. [2024-06-27 22:36:52,093 INFO L125 PetriNetUnfolderBase]: For 118113/118119 co-relation queries the response was YES. [2024-06-27 22:36:52,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61095 conditions, 11301 events. 7526/11301 cut-off events. For 118113/118119 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 67708 event pairs, 1882 based on Foata normal form. 12/11311 useless extension candidates. Maximal degree in co-relation 61021. Up to 9071 conditions per place. [2024-06-27 22:36:52,177 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 294 selfloop transitions, 90 changer transitions 0/390 dead transitions. [2024-06-27 22:36:52,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 390 transitions, 4717 flow [2024-06-27 22:36:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-06-27 22:36:52,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222437137330754 [2024-06-27 22:36:52,180 INFO L175 Difference]: Start difference. First operand has 150 places, 279 transitions, 3113 flow. Second operand 11 states and 270 transitions. [2024-06-27 22:36:52,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 390 transitions, 4717 flow [2024-06-27 22:36:52,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 390 transitions, 4635 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:36:52,382 INFO L231 Difference]: Finished difference. Result has 156 places, 290 transitions, 3433 flow [2024-06-27 22:36:52,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3433, PETRI_PLACES=156, PETRI_TRANSITIONS=290} [2024-06-27 22:36:52,382 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2024-06-27 22:36:52,383 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 290 transitions, 3433 flow [2024-06-27 22:36:52,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:52,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:36:52,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:36:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:36:52,383 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:36:52,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:36:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1863298081, now seen corresponding path program 5 times [2024-06-27 22:36:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:36:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098599435] [2024-06-27 22:36:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:36:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:36:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:36:56,563 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 22:36:56,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:36:56,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098599435] [2024-06-27 22:36:56,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098599435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:36:56,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:36:56,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:36:56,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241731233] [2024-06-27 22:36:56,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:36:56,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:36:56,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:36:56,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:36:56,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:36:56,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:36:56,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 290 transitions, 3433 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:36:56,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:36:56,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:36:56,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:36:59,525 INFO L124 PetriNetUnfolderBase]: 7609/11516 cut-off events. [2024-06-27 22:36:59,525 INFO L125 PetriNetUnfolderBase]: For 136299/136305 co-relation queries the response was YES. [2024-06-27 22:36:59,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64220 conditions, 11516 events. 7609/11516 cut-off events. For 136299/136305 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 70390 event pairs, 2536 based on Foata normal form. 14/11528 useless extension candidates. Maximal degree in co-relation 64143. Up to 10064 conditions per place. [2024-06-27 22:36:59,639 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 306 selfloop transitions, 74 changer transitions 0/386 dead transitions. [2024-06-27 22:36:59,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 386 transitions, 4772 flow [2024-06-27 22:36:59,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:36:59,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:36:59,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2024-06-27 22:36:59,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164410058027079 [2024-06-27 22:36:59,641 INFO L175 Difference]: Start difference. First operand has 156 places, 290 transitions, 3433 flow. Second operand 11 states and 267 transitions. [2024-06-27 22:36:59,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 386 transitions, 4772 flow [2024-06-27 22:37:00,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 386 transitions, 4607 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-27 22:37:00,013 INFO L231 Difference]: Finished difference. Result has 163 places, 292 transitions, 3470 flow [2024-06-27 22:37:00,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3470, PETRI_PLACES=163, PETRI_TRANSITIONS=292} [2024-06-27 22:37:00,014 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 112 predicate places. [2024-06-27 22:37:00,014 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 292 transitions, 3470 flow [2024-06-27 22:37:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:00,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:00,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:00,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:37:00,015 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:00,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1978589251, now seen corresponding path program 6 times [2024-06-27 22:37:00,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:00,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975433772] [2024-06-27 22:37:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:00,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:03,086 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 22:37:03,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975433772] [2024-06-27 22:37:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975433772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:03,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:03,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:37:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111665468] [2024-06-27 22:37:03,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:03,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:37:03,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:37:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:37:03,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:03,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 292 transitions, 3470 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:03,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:03,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:03,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:05,965 INFO L124 PetriNetUnfolderBase]: 7574/11441 cut-off events. [2024-06-27 22:37:05,965 INFO L125 PetriNetUnfolderBase]: For 133090/133099 co-relation queries the response was YES. [2024-06-27 22:37:06,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63179 conditions, 11441 events. 7574/11441 cut-off events. For 133090/133099 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 69757 event pairs, 2592 based on Foata normal form. 21/11458 useless extension candidates. Maximal degree in co-relation 63099. Up to 9902 conditions per place. [2024-06-27 22:37:06,053 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 253 selfloop transitions, 82 changer transitions 0/341 dead transitions. [2024-06-27 22:37:06,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 341 transitions, 4432 flow [2024-06-27 22:37:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:37:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:37:06,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:37:06,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:37:06,055 INFO L175 Difference]: Start difference. First operand has 163 places, 292 transitions, 3470 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:37:06,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 341 transitions, 4432 flow [2024-06-27 22:37:06,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 341 transitions, 4248 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 22:37:06,323 INFO L231 Difference]: Finished difference. Result has 160 places, 291 transitions, 3540 flow [2024-06-27 22:37:06,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3540, PETRI_PLACES=160, PETRI_TRANSITIONS=291} [2024-06-27 22:37:06,324 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 109 predicate places. [2024-06-27 22:37:06,324 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 291 transitions, 3540 flow [2024-06-27 22:37:06,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:06,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:06,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:06,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:37:06,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:06,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1101106617, now seen corresponding path program 1 times [2024-06-27 22:37:06,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646954649] [2024-06-27 22:37:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:06,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:10,776 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 22:37:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:10,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646954649] [2024-06-27 22:37:10,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646954649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:10,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:10,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385961692] [2024-06-27 22:37:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:10,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:10,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:10,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:10,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:10,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 291 transitions, 3540 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:10,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:10,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:10,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:14,458 INFO L124 PetriNetUnfolderBase]: 8440/12623 cut-off events. [2024-06-27 22:37:14,459 INFO L125 PetriNetUnfolderBase]: For 156312/156321 co-relation queries the response was YES. [2024-06-27 22:37:14,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69979 conditions, 12623 events. 8440/12623 cut-off events. For 156312/156321 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 76321 event pairs, 2259 based on Foata normal form. 38/12657 useless extension candidates. Maximal degree in co-relation 69897. Up to 9911 conditions per place. [2024-06-27 22:37:14,577 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 264 selfloop transitions, 104 changer transitions 0/374 dead transitions. [2024-06-27 22:37:14,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 374 transitions, 4810 flow [2024-06-27 22:37:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:37:14,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:37:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 22:37:14,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-06-27 22:37:14,579 INFO L175 Difference]: Start difference. First operand has 160 places, 291 transitions, 3540 flow. Second operand 10 states and 241 transitions. [2024-06-27 22:37:14,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 374 transitions, 4810 flow [2024-06-27 22:37:14,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 374 transitions, 4690 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:37:14,902 INFO L231 Difference]: Finished difference. Result has 168 places, 307 transitions, 3889 flow [2024-06-27 22:37:14,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3889, PETRI_PLACES=168, PETRI_TRANSITIONS=307} [2024-06-27 22:37:14,903 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2024-06-27 22:37:14,903 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 307 transitions, 3889 flow [2024-06-27 22:37:14,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:14,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:14,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:14,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:37:14,903 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:14,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:14,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1014945973, now seen corresponding path program 2 times [2024-06-27 22:37:14,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:14,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582913819] [2024-06-27 22:37:14,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:14,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:19,252 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 22:37:19,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:19,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582913819] [2024-06-27 22:37:19,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582913819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:19,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:19,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:19,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227205449] [2024-06-27 22:37:19,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:19,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:19,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:19,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:19,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 307 transitions, 3889 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:19,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:19,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:19,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:22,797 INFO L124 PetriNetUnfolderBase]: 8490/12769 cut-off events. [2024-06-27 22:37:22,797 INFO L125 PetriNetUnfolderBase]: For 162308/162317 co-relation queries the response was YES. [2024-06-27 22:37:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73725 conditions, 12769 events. 8490/12769 cut-off events. For 162308/162317 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 78208 event pairs, 2629 based on Foata normal form. 10/12775 useless extension candidates. Maximal degree in co-relation 73640. Up to 11575 conditions per place. [2024-06-27 22:37:22,941 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 316 selfloop transitions, 52 changer transitions 0/374 dead transitions. [2024-06-27 22:37:22,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 374 transitions, 5018 flow [2024-06-27 22:37:22,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:37:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:37:22,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 22:37:22,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 22:37:22,943 INFO L175 Difference]: Start difference. First operand has 168 places, 307 transitions, 3889 flow. Second operand 9 states and 207 transitions. [2024-06-27 22:37:22,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 374 transitions, 5018 flow [2024-06-27 22:37:23,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 374 transitions, 4758 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-27 22:37:23,384 INFO L231 Difference]: Finished difference. Result has 171 places, 309 transitions, 3784 flow [2024-06-27 22:37:23,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3784, PETRI_PLACES=171, PETRI_TRANSITIONS=309} [2024-06-27 22:37:23,384 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 120 predicate places. [2024-06-27 22:37:23,384 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 309 transitions, 3784 flow [2024-06-27 22:37:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:23,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:23,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:23,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:37:23,385 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:23,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1014706963, now seen corresponding path program 3 times [2024-06-27 22:37:23,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:23,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795420604] [2024-06-27 22:37:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:23,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:27,242 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 22:37:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:27,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795420604] [2024-06-27 22:37:27,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795420604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:27,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:27,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037613052] [2024-06-27 22:37:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:27,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:27,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:27,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 309 transitions, 3784 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:27,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:27,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:27,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:30,207 INFO L124 PetriNetUnfolderBase]: 8490/12738 cut-off events. [2024-06-27 22:37:30,207 INFO L125 PetriNetUnfolderBase]: For 159565/159645 co-relation queries the response was YES. [2024-06-27 22:37:30,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72081 conditions, 12738 events. 8490/12738 cut-off events. For 159565/159645 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 77669 event pairs, 2563 based on Foata normal form. 44/12772 useless extension candidates. Maximal degree in co-relation 71995. Up to 11397 conditions per place. [2024-06-27 22:37:30,343 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 313 selfloop transitions, 55 changer transitions 0/374 dead transitions. [2024-06-27 22:37:30,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 374 transitions, 4974 flow [2024-06-27 22:37:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:37:30,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:37:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-27 22:37:30,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-06-27 22:37:30,345 INFO L175 Difference]: Start difference. First operand has 171 places, 309 transitions, 3784 flow. Second operand 8 states and 183 transitions. [2024-06-27 22:37:30,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 374 transitions, 4974 flow [2024-06-27 22:37:30,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 374 transitions, 4855 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 22:37:30,643 INFO L231 Difference]: Finished difference. Result has 173 places, 316 transitions, 3917 flow [2024-06-27 22:37:30,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3665, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3917, PETRI_PLACES=173, PETRI_TRANSITIONS=316} [2024-06-27 22:37:30,644 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 122 predicate places. [2024-06-27 22:37:30,644 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 316 transitions, 3917 flow [2024-06-27 22:37:30,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:30,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:30,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:30,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:37:30,645 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:30,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1591594171, now seen corresponding path program 1 times [2024-06-27 22:37:30,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:30,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094159782] [2024-06-27 22:37:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:30,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:33,639 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 22:37:33,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:33,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094159782] [2024-06-27 22:37:33,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094159782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:33,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:33,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:37:33,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458478424] [2024-06-27 22:37:33,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:33,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:37:33,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:33,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:37:33,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:37:33,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:33,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 316 transitions, 3917 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:33,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:33,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:33,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:36,710 INFO L124 PetriNetUnfolderBase]: 9076/13512 cut-off events. [2024-06-27 22:37:36,710 INFO L125 PetriNetUnfolderBase]: For 170230/170239 co-relation queries the response was YES. [2024-06-27 22:37:36,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77194 conditions, 13512 events. 9076/13512 cut-off events. For 170230/170239 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 81842 event pairs, 2668 based on Foata normal form. 8/13513 useless extension candidates. Maximal degree in co-relation 77106. Up to 11943 conditions per place. [2024-06-27 22:37:36,856 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 293 selfloop transitions, 94 changer transitions 0/393 dead transitions. [2024-06-27 22:37:36,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 393 transitions, 5244 flow [2024-06-27 22:37:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:37:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:37:36,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 22:37:36,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-27 22:37:36,858 INFO L175 Difference]: Start difference. First operand has 173 places, 316 transitions, 3917 flow. Second operand 8 states and 195 transitions. [2024-06-27 22:37:36,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 393 transitions, 5244 flow [2024-06-27 22:37:37,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 393 transitions, 5144 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 22:37:37,354 INFO L231 Difference]: Finished difference. Result has 178 places, 341 transitions, 4301 flow [2024-06-27 22:37:37,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3817, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4301, PETRI_PLACES=178, PETRI_TRANSITIONS=341} [2024-06-27 22:37:37,354 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 127 predicate places. [2024-06-27 22:37:37,355 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 341 transitions, 4301 flow [2024-06-27 22:37:37,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:37:37,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:37,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:37,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:37:37,355 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:37,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:37,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2086415210, now seen corresponding path program 1 times [2024-06-27 22:37:37,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:37,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471760609] [2024-06-27 22:37:37,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:37,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:41,660 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 22:37:41,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:41,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471760609] [2024-06-27 22:37:41,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471760609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:41,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:41,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:41,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981508799] [2024-06-27 22:37:41,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:41,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:41,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:41,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:41,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:41,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 341 transitions, 4301 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:41,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:41,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:41,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:46,792 INFO L124 PetriNetUnfolderBase]: 13140/19551 cut-off events. [2024-06-27 22:37:46,792 INFO L125 PetriNetUnfolderBase]: For 299344/299350 co-relation queries the response was YES. [2024-06-27 22:37:46,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112228 conditions, 19551 events. 13140/19551 cut-off events. For 299344/299350 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 125536 event pairs, 2993 based on Foata normal form. 70/19618 useless extension candidates. Maximal degree in co-relation 112137. Up to 12492 conditions per place. [2024-06-27 22:37:47,028 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 464 selfloop transitions, 90 changer transitions 0/560 dead transitions. [2024-06-27 22:37:47,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 560 transitions, 7186 flow [2024-06-27 22:37:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:37:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:37:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 397 transitions. [2024-06-27 22:37:47,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6033434650455927 [2024-06-27 22:37:47,030 INFO L175 Difference]: Start difference. First operand has 178 places, 341 transitions, 4301 flow. Second operand 14 states and 397 transitions. [2024-06-27 22:37:47,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 560 transitions, 7186 flow [2024-06-27 22:37:47,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 560 transitions, 7074 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:37:47,909 INFO L231 Difference]: Finished difference. Result has 192 places, 385 transitions, 5023 flow [2024-06-27 22:37:47,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5023, PETRI_PLACES=192, PETRI_TRANSITIONS=385} [2024-06-27 22:37:47,910 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 141 predicate places. [2024-06-27 22:37:47,910 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 385 transitions, 5023 flow [2024-06-27 22:37:47,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:47,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:37:47,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:37:47,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:37:47,911 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:37:47,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:37:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1565391184, now seen corresponding path program 2 times [2024-06-27 22:37:47,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:37:47,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267760163] [2024-06-27 22:37:47,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:37:47,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:37:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:37:52,196 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 22:37:52,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:37:52,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267760163] [2024-06-27 22:37:52,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267760163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:37:52,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:37:52,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:37:52,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953617376] [2024-06-27 22:37:52,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:37:52,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:37:52,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:37:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:37:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:37:52,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:37:52,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 385 transitions, 5023 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:37:52,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:37:52,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:37:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:37:58,774 INFO L124 PetriNetUnfolderBase]: 15319/23119 cut-off events. [2024-06-27 22:37:58,774 INFO L125 PetriNetUnfolderBase]: For 420980/420986 co-relation queries the response was YES. [2024-06-27 22:37:58,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134339 conditions, 23119 events. 15319/23119 cut-off events. For 420980/420986 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 155673 event pairs, 5537 based on Foata normal form. 154/23271 useless extension candidates. Maximal degree in co-relation 134244. Up to 16804 conditions per place. [2024-06-27 22:37:59,070 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 410 selfloop transitions, 137 changer transitions 0/553 dead transitions. [2024-06-27 22:37:59,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 553 transitions, 7510 flow [2024-06-27 22:37:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 22:37:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 22:37:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 396 transitions. [2024-06-27 22:37:59,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2024-06-27 22:37:59,073 INFO L175 Difference]: Start difference. First operand has 192 places, 385 transitions, 5023 flow. Second operand 15 states and 396 transitions. [2024-06-27 22:37:59,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 553 transitions, 7510 flow [2024-06-27 22:38:00,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 553 transitions, 7310 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-27 22:38:00,182 INFO L231 Difference]: Finished difference. Result has 202 places, 390 transitions, 5259 flow [2024-06-27 22:38:00,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4831, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5259, PETRI_PLACES=202, PETRI_TRANSITIONS=390} [2024-06-27 22:38:00,183 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 151 predicate places. [2024-06-27 22:38:00,183 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 390 transitions, 5259 flow [2024-06-27 22:38:00,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:38:00,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:00,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:00,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:38:00,184 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:00,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash -970387058, now seen corresponding path program 3 times [2024-06-27 22:38:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:00,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618309857] [2024-06-27 22:38:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:00,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:04,499 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 22:38:04,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:04,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618309857] [2024-06-27 22:38:04,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618309857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:04,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:04,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:38:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212208711] [2024-06-27 22:38:04,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:38:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:04,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:38:04,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:38:04,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:38:04,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 390 transitions, 5259 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:38:04,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:04,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:38:04,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:11,806 INFO L124 PetriNetUnfolderBase]: 15931/23936 cut-off events. [2024-06-27 22:38:11,806 INFO L125 PetriNetUnfolderBase]: For 384352/384358 co-relation queries the response was YES. [2024-06-27 22:38:11,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138056 conditions, 23936 events. 15931/23936 cut-off events. For 384352/384358 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 161879 event pairs, 5248 based on Foata normal form. 70/24003 useless extension candidates. Maximal degree in co-relation 137958. Up to 17505 conditions per place. [2024-06-27 22:38:12,060 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 451 selfloop transitions, 85 changer transitions 0/542 dead transitions. [2024-06-27 22:38:12,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 542 transitions, 7519 flow [2024-06-27 22:38:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:38:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:38:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 373 transitions. [2024-06-27 22:38:12,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668693009118541 [2024-06-27 22:38:12,062 INFO L175 Difference]: Start difference. First operand has 202 places, 390 transitions, 5259 flow. Second operand 14 states and 373 transitions. [2024-06-27 22:38:12,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 542 transitions, 7519 flow [2024-06-27 22:38:13,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 542 transitions, 7166 flow, removed 45 selfloop flow, removed 13 redundant places. [2024-06-27 22:38:13,299 INFO L231 Difference]: Finished difference. Result has 204 places, 396 transitions, 5271 flow [2024-06-27 22:38:13,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4931, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5271, PETRI_PLACES=204, PETRI_TRANSITIONS=396} [2024-06-27 22:38:13,300 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 153 predicate places. [2024-06-27 22:38:13,300 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 396 transitions, 5271 flow [2024-06-27 22:38:13,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:38:13,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:13,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:13,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:38:13,301 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:13,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:13,301 INFO L85 PathProgramCache]: Analyzing trace with hash -71563280, now seen corresponding path program 4 times [2024-06-27 22:38:13,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:13,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750410154] [2024-06-27 22:38:13,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:13,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:17,302 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 22:38:17,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:17,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750410154] [2024-06-27 22:38:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750410154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:17,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:17,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:38:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025359436] [2024-06-27 22:38:17,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:38:17,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:38:17,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:38:17,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:38:17,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 396 transitions, 5271 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:38:17,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:17,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:38:17,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:38:24,969 INFO L124 PetriNetUnfolderBase]: 18170/27252 cut-off events. [2024-06-27 22:38:24,969 INFO L125 PetriNetUnfolderBase]: For 381536/381542 co-relation queries the response was YES. [2024-06-27 22:38:25,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150860 conditions, 27252 events. 18170/27252 cut-off events. For 381536/381542 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 186801 event pairs, 4970 based on Foata normal form. 22/27270 useless extension candidates. Maximal degree in co-relation 150761. Up to 22502 conditions per place. [2024-06-27 22:38:25,336 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 467 selfloop transitions, 79 changer transitions 0/552 dead transitions. [2024-06-27 22:38:25,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 552 transitions, 7781 flow [2024-06-27 22:38:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:38:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:38:25,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 310 transitions. [2024-06-27 22:38:25,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5996131528046421 [2024-06-27 22:38:25,338 INFO L175 Difference]: Start difference. First operand has 204 places, 396 transitions, 5271 flow. Second operand 11 states and 310 transitions. [2024-06-27 22:38:25,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 552 transitions, 7781 flow [2024-06-27 22:38:26,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 552 transitions, 7622 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 22:38:26,424 INFO L231 Difference]: Finished difference. Result has 209 places, 424 transitions, 5951 flow [2024-06-27 22:38:26,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5951, PETRI_PLACES=209, PETRI_TRANSITIONS=424} [2024-06-27 22:38:26,429 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 158 predicate places. [2024-06-27 22:38:26,432 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 424 transitions, 5951 flow [2024-06-27 22:38:26,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:38:26,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:38:26,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:38:26,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:38:26,432 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:38:26,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:38:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1839100992, now seen corresponding path program 5 times [2024-06-27 22:38:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:38:26,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079045935] [2024-06-27 22:38:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:38:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:38:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:38:30,316 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 22:38:30,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:38:30,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079045935] [2024-06-27 22:38:30,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079045935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:38:30,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:38:30,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:38:30,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032273105] [2024-06-27 22:38:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:38:30,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:38:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:38:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:38:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:38:30,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 22:38:30,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 424 transitions, 5951 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 22:38:30,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:38:30,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 22:38:30,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand