./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe028_power.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/safe028_power.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/safe028_power.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe028_power.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 22:53:10,587 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:53:10,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:53:10,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:53:10,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:53:10,701 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:53:10,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:53:10,703 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:53:10,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:53:10,707 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:53:10,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:53:10,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:53:10,709 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:53:10,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:53:10,711 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:53:10,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:53:10,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:53:10,711 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:53:10,712 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:53:10,712 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:53:10,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:53:10,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:53:10,713 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:53:10,713 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:53:10,713 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:53:10,714 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:53:10,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:53:10,714 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:53:10,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:53:10,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:53:10,716 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:53:10,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:53:10,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:53:10,717 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:53:10,717 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:53:10,717 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:53:10,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:53:10,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:53:10,718 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:53:10,718 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:53:10,719 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:53:10,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:53:10,719 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:53:10,719 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:53:10,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:53:11,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:53:11,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:53:11,027 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:53:11,028 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:53:11,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_power.i [2024-06-27 22:53:12,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:53:12,499 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:53:12,500 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_power.i [2024-06-27 22:53:12,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef13d826/ec5825f773e44b938f4f8473b61edccf/FLAGd8a6852cd [2024-06-27 22:53:12,542 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ef13d826/ec5825f773e44b938f4f8473b61edccf [2024-06-27 22:53:12,545 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:53:12,546 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:53:12,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe028_power.yml/witness.yml [2024-06-27 22:53:12,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:53:12,651 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:53:12,652 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:53:12,653 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:53:12,657 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:53:12,658 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:53:12" (1/2) ... [2024-06-27 22:53:12,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790362ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:12, skipping insertion in model container [2024-06-27 22:53:12,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:53:12" (1/2) ... [2024-06-27 22:53:12,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@67e3a7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:53:12, skipping insertion in model container [2024-06-27 22:53:12,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:53:12" (2/2) ... [2024-06-27 22:53:12,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790362ad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:12, skipping insertion in model container [2024-06-27 22:53:12,664 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:53:12" (2/2) ... [2024-06-27 22:53:12,664 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:53:12,692 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:53:12,693 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$read_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:53:12,693 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$read_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:53:12,694 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$read_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$flush_delayed) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$mem_tmp) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff0_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd2) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$r_buff1_thd3) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff0_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EAX$w_buff1_used) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )y >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:53:12,694 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:53:12,694 INFO L106 edCorrectnessWitness]: ghost_update [L862-L862] multithreaded = 1; [2024-06-27 22:53:12,742 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:53:12,883 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/safe028_power.i[990,1003] [2024-06-27 22:53:13,041 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:53:13,056 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:53:13,115 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/safe028_power.i[990,1003] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:53:13,307 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:53:13,360 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:53:13,360 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13 WrapperNode [2024-06-27 22:53:13,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:53:13,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:53:13,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:53:13,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:53:13,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,390 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,442 INFO L138 Inliner]: procedures = 175, calls = 74, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 202 [2024-06-27 22:53:13,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:53:13,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:53:13,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:53:13,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:53:13,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,488 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 7 writes are split as follows [0, 7]. [2024-06-27 22:53:13,488 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,488 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,504 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,511 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,515 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:53:13,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:53:13,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:53:13,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:53:13,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (1/1) ... [2024-06-27 22:53:13,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:53:13,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:53:13,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:53:13,661 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 22:53:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:53:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:53:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:53:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:53:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:53:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:53:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:53:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:53:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:53:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:53:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:53:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:53:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:53:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:53:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:53:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:53:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:53:13,701 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 22:53:13,897 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:53:13,899 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:53:14,593 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:53:14,594 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:53:15,058 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:53:15,058 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:53:15,059 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:53:15 BoogieIcfgContainer [2024-06-27 22:53:15,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:53:15,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:53:15,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:53:15,065 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:53:15,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:53:12" (1/4) ... [2024-06-27 22:53:15,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33167082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:53:15, skipping insertion in model container [2024-06-27 22:53:15,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:53:12" (2/4) ... [2024-06-27 22:53:15,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33167082 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:53:15, skipping insertion in model container [2024-06-27 22:53:15,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:53:13" (3/4) ... [2024-06-27 22:53:15,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33167082 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:53:15, skipping insertion in model container [2024-06-27 22:53:15,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:53:15" (4/4) ... [2024-06-27 22:53:15,072 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_power.i [2024-06-27 22:53:15,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:53:15,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:53:15,092 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:53:15,186 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:53:15,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:53:15,276 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:53:15,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:53:15,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:53:15,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:53:15,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:53:15,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:53:15,313 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;@2c6ee8b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:53:15,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:53:15,319 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:53:15,319 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:53:15,320 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:53:15,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:15,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:53:15,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:15,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:15,326 INFO L85 PathProgramCache]: Analyzing trace with hash 783807377, now seen corresponding path program 1 times [2024-06-27 22:53:15,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:15,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232705284] [2024-06-27 22:53:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:15,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:17,886 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 22:53:17,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:17,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232705284] [2024-06-27 22:53:17,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232705284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:17,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:17,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:53:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28482281] [2024-06-27 22:53:17,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:17,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:53:17,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:53:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:53:17,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:53:17,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:53:17,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:17,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:53:17,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:19,481 INFO L124 PetriNetUnfolderBase]: 3721/5681 cut-off events. [2024-06-27 22:53:19,481 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-06-27 22:53:19,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11135 conditions, 5681 events. 3721/5681 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 32927 event pairs, 2069 based on Foata normal form. 149/5385 useless extension candidates. Maximal degree in co-relation 11123. Up to 5362 conditions per place. [2024-06-27 22:53:19,536 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 49 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2024-06-27 22:53:19,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 247 flow [2024-06-27 22:53:19,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:53:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:53:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 22:53:19,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-06-27 22:53:19,552 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 98 transitions. [2024-06-27 22:53:19,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 247 flow [2024-06-27 22:53:19,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:53:19,558 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 126 flow [2024-06-27 22:53:19,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:53:19,562 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:53:19,563 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 126 flow [2024-06-27 22:53:19,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 22:53:19,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:19,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:19,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:53:19,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:19,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:19,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1619661072, now seen corresponding path program 1 times [2024-06-27 22:53:19,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:19,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347217691] [2024-06-27 22:53:19,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:19,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:21,521 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 22:53:21,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:21,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347217691] [2024-06-27 22:53:21,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347217691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:21,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:21,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:53:21,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645709640] [2024-06-27 22:53:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:21,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:53:21,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:53:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:53:21,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:53:21,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:21,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:21,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:53:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:23,094 INFO L124 PetriNetUnfolderBase]: 4436/6417 cut-off events. [2024-06-27 22:53:23,095 INFO L125 PetriNetUnfolderBase]: For 869/869 co-relation queries the response was YES. [2024-06-27 22:53:23,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14381 conditions, 6417 events. 4436/6417 cut-off events. For 869/869 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35253 event pairs, 2076 based on Foata normal form. 3/6121 useless extension candidates. Maximal degree in co-relation 14369. Up to 6326 conditions per place. [2024-06-27 22:53:23,140 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 66 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2024-06-27 22:53:23,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 82 transitions, 354 flow [2024-06-27 22:53:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:53:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:53:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-27 22:53:23,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-06-27 22:53:23,144 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 126 flow. Second operand 4 states and 125 transitions. [2024-06-27 22:53:23,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 82 transitions, 354 flow [2024-06-27 22:53:23,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 82 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:53:23,150 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 164 flow [2024-06-27 22:53:23,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 22:53:23,153 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 22:53:23,154 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 164 flow [2024-06-27 22:53:23,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:23,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:23,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:23,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:53:23,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:23,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1716179599, now seen corresponding path program 1 times [2024-06-27 22:53:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:23,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388859283] [2024-06-27 22:53:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:23,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:26,104 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 22:53:26,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:26,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388859283] [2024-06-27 22:53:26,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388859283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:26,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:26,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:53:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439765907] [2024-06-27 22:53:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:26,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:53:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:53:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:53:26,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:53:26,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 22:53:26,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:26,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:53:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:27,623 INFO L124 PetriNetUnfolderBase]: 4303/6240 cut-off events. [2024-06-27 22:53:27,623 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2024-06-27 22:53:27,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15362 conditions, 6240 events. 4303/6240 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 34295 event pairs, 1605 based on Foata normal form. 4/5989 useless extension candidates. Maximal degree in co-relation 15348. Up to 6039 conditions per place. [2024-06-27 22:53:27,665 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 14 changer transitions 0/110 dead transitions. [2024-06-27 22:53:27,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 110 transitions, 526 flow [2024-06-27 22:53:27,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:53:27,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:53:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-27 22:53:27,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6791666666666667 [2024-06-27 22:53:27,668 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 164 flow. Second operand 5 states and 163 transitions. [2024-06-27 22:53:27,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 110 transitions, 526 flow [2024-06-27 22:53:27,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 110 transitions, 512 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:53:27,672 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 252 flow [2024-06-27 22:53:27,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-06-27 22:53:27,673 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-27 22:53:27,674 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 252 flow [2024-06-27 22:53:27,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 22:53:27,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:27,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:53:27,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:27,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1747841816, now seen corresponding path program 1 times [2024-06-27 22:53:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427525361] [2024-06-27 22:53:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:27,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:31,069 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 22:53:31,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:31,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427525361] [2024-06-27 22:53:31,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427525361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:31,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:31,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:53:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215382328] [2024-06-27 22:53:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:31,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:53:31,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:53:31,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:53:31,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:53:31,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 22:53:31,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:31,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:53:31,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:32,681 INFO L124 PetriNetUnfolderBase]: 4181/6062 cut-off events. [2024-06-27 22:53:32,681 INFO L125 PetriNetUnfolderBase]: For 8505/8505 co-relation queries the response was YES. [2024-06-27 22:53:32,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17370 conditions, 6062 events. 4181/6062 cut-off events. For 8505/8505 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 32996 event pairs, 1073 based on Foata normal form. 54/6111 useless extension candidates. Maximal degree in co-relation 17353. Up to 5741 conditions per place. [2024-06-27 22:53:32,713 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 100 selfloop transitions, 16 changer transitions 0/125 dead transitions. [2024-06-27 22:53:32,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 125 transitions, 652 flow [2024-06-27 22:53:32,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:53:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:53:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-06-27 22:53:32,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-06-27 22:53:32,716 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 252 flow. Second operand 6 states and 188 transitions. [2024-06-27 22:53:32,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 125 transitions, 652 flow [2024-06-27 22:53:32,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 125 transitions, 652 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:53:32,727 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 301 flow [2024-06-27 22:53:32,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-06-27 22:53:32,729 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 13 predicate places. [2024-06-27 22:53:32,729 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 301 flow [2024-06-27 22:53:32,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 22:53:32,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:32,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:32,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:53:32,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:32,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash 717636169, now seen corresponding path program 1 times [2024-06-27 22:53:32,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774569353] [2024-06-27 22:53:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:35,176 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 22:53:35,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:35,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774569353] [2024-06-27 22:53:35,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774569353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:35,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:35,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:53:35,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583311100] [2024-06-27 22:53:35,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:35,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:53:35,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:35,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:53:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:53:35,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:53:35,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 22:53:35,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:35,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:53:35,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:36,784 INFO L124 PetriNetUnfolderBase]: 3897/6267 cut-off events. [2024-06-27 22:53:36,785 INFO L125 PetriNetUnfolderBase]: For 12017/12046 co-relation queries the response was YES. [2024-06-27 22:53:36,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18048 conditions, 6267 events. 3897/6267 cut-off events. For 12017/12046 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 39489 event pairs, 1852 based on Foata normal form. 3/6088 useless extension candidates. Maximal degree in co-relation 18027. Up to 5549 conditions per place. [2024-06-27 22:53:36,820 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 64 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2024-06-27 22:53:36,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 554 flow [2024-06-27 22:53:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:53:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:53:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 22:53:36,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 22:53:36,827 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 301 flow. Second operand 6 states and 137 transitions. [2024-06-27 22:53:36,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 554 flow [2024-06-27 22:53:36,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 515 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 22:53:36,837 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 376 flow [2024-06-27 22:53:36,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-06-27 22:53:36,839 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-27 22:53:36,839 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 376 flow [2024-06-27 22:53:36,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 22:53:36,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:36,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:53:36,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:36,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:36,841 INFO L85 PathProgramCache]: Analyzing trace with hash 771886766, now seen corresponding path program 1 times [2024-06-27 22:53:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326341195] [2024-06-27 22:53:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:36,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:40,505 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 22:53:40,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:40,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326341195] [2024-06-27 22:53:40,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326341195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:40,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:40,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:53:40,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621167981] [2024-06-27 22:53:40,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:40,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:53:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:40,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:53:40,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:53:40,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:53:40,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 376 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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 22:53:40,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:40,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:53:40,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:42,195 INFO L124 PetriNetUnfolderBase]: 3914/6293 cut-off events. [2024-06-27 22:53:42,195 INFO L125 PetriNetUnfolderBase]: For 13923/13940 co-relation queries the response was YES. [2024-06-27 22:53:42,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19134 conditions, 6293 events. 3914/6293 cut-off events. For 13923/13940 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 39488 event pairs, 1804 based on Foata normal form. 3/6113 useless extension candidates. Maximal degree in co-relation 19109. Up to 5536 conditions per place. [2024-06-27 22:53:42,236 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 78 selfloop transitions, 20 changer transitions 2/113 dead transitions. [2024-06-27 22:53:42,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 113 transitions, 698 flow [2024-06-27 22:53:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:53:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:53:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-27 22:53:42,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-27 22:53:42,239 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 376 flow. Second operand 6 states and 158 transitions. [2024-06-27 22:53:42,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 113 transitions, 698 flow [2024-06-27 22:53:42,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 113 transitions, 688 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 22:53:42,248 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 470 flow [2024-06-27 22:53:42,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=470, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2024-06-27 22:53:42,252 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-27 22:53:42,252 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 470 flow [2024-06-27 22:53:42,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 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 22:53:42,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:42,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:42,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:53:42,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:42,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:42,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1038125552, now seen corresponding path program 1 times [2024-06-27 22:53:42,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:42,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714489686] [2024-06-27 22:53:42,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:42,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:44,888 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 22:53:44,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:44,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714489686] [2024-06-27 22:53:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714489686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:44,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:44,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:53:44,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547525078] [2024-06-27 22:53:44,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:53:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:53:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:53:44,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:53:44,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 22:53:44,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:44,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:53:44,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:46,503 INFO L124 PetriNetUnfolderBase]: 4241/6610 cut-off events. [2024-06-27 22:53:46,503 INFO L125 PetriNetUnfolderBase]: For 17596/17596 co-relation queries the response was YES. [2024-06-27 22:53:46,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21798 conditions, 6610 events. 4241/6610 cut-off events. For 17596/17596 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 39675 event pairs, 1935 based on Foata normal form. 2/6450 useless extension candidates. Maximal degree in co-relation 21769. Up to 6036 conditions per place. [2024-06-27 22:53:46,541 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 90 selfloop transitions, 21 changer transitions 0/119 dead transitions. [2024-06-27 22:53:46,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 844 flow [2024-06-27 22:53:46,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:53:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:53:46,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 22:53:46,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-27 22:53:46,543 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 470 flow. Second operand 7 states and 159 transitions. [2024-06-27 22:53:46,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 844 flow [2024-06-27 22:53:46,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 813 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 22:53:46,554 INFO L231 Difference]: Finished difference. Result has 83 places, 90 transitions, 594 flow [2024-06-27 22:53:46,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=83, PETRI_TRANSITIONS=90} [2024-06-27 22:53:46,555 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-27 22:53:46,555 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 90 transitions, 594 flow [2024-06-27 22:53:46,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 22:53:46,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:46,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:46,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:53:46,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:46,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:46,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1037858642, now seen corresponding path program 2 times [2024-06-27 22:53:46,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:46,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425618123] [2024-06-27 22:53:46,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:46,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:49,156 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 22:53:49,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:49,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425618123] [2024-06-27 22:53:49,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425618123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:49,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:49,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:53:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063169754] [2024-06-27 22:53:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:49,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:53:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:53:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:53:49,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:53:49,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 90 transitions, 594 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 22:53:49,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:49,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:53:49,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:50,505 INFO L124 PetriNetUnfolderBase]: 4264/6635 cut-off events. [2024-06-27 22:53:50,505 INFO L125 PetriNetUnfolderBase]: For 21520/21520 co-relation queries the response was YES. [2024-06-27 22:53:50,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23222 conditions, 6635 events. 4264/6635 cut-off events. For 21520/21520 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39717 event pairs, 1945 based on Foata normal form. 2/6473 useless extension candidates. Maximal degree in co-relation 23190. Up to 6015 conditions per place. [2024-06-27 22:53:50,542 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 87 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-06-27 22:53:50,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 127 transitions, 994 flow [2024-06-27 22:53:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:53:50,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:53:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 22:53:50,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 22:53:50,544 INFO L175 Difference]: Start difference. First operand has 83 places, 90 transitions, 594 flow. Second operand 7 states and 160 transitions. [2024-06-27 22:53:50,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 127 transitions, 994 flow [2024-06-27 22:53:50,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 970 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 22:53:50,563 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 719 flow [2024-06-27 22:53:50,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=719, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-06-27 22:53:50,565 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-27 22:53:50,566 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 719 flow [2024-06-27 22:53:50,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 22:53:50,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:50,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:50,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:53:50,566 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:50,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:50,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1537348458, now seen corresponding path program 3 times [2024-06-27 22:53:50,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:50,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852564589] [2024-06-27 22:53:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:50,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:52,698 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 22:53:52,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:52,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852564589] [2024-06-27 22:53:52,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852564589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:52,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:52,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:53:52,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319310078] [2024-06-27 22:53:52,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:52,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:53:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:53:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:53:52,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:53:52,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 719 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 22:53:52,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:52,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:53:52,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:54,068 INFO L124 PetriNetUnfolderBase]: 4297/6689 cut-off events. [2024-06-27 22:53:54,068 INFO L125 PetriNetUnfolderBase]: For 26466/26466 co-relation queries the response was YES. [2024-06-27 22:53:54,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24757 conditions, 6689 events. 4297/6689 cut-off events. For 26466/26466 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39987 event pairs, 1934 based on Foata normal form. 2/6532 useless extension candidates. Maximal degree in co-relation 24722. Up to 6094 conditions per place. [2024-06-27 22:53:54,120 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 107 selfloop transitions, 31 changer transitions 0/146 dead transitions. [2024-06-27 22:53:54,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 1155 flow [2024-06-27 22:53:54,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:53:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:53:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:53:54,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 22:53:54,122 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 719 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:53:54,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 1155 flow [2024-06-27 22:53:54,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 1098 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-27 22:53:54,159 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 830 flow [2024-06-27 22:53:54,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=830, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2024-06-27 22:53:54,160 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-27 22:53:54,160 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 830 flow [2024-06-27 22:53:54,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 22:53:54,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:54,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:53:54,161 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:54,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1841311992, now seen corresponding path program 1 times [2024-06-27 22:53:54,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569089730] [2024-06-27 22:53:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:57,839 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 22:53:57,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:57,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569089730] [2024-06-27 22:53:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569089730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:57,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:57,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:53:57,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470416664] [2024-06-27 22:53:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:57,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:53:57,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:53:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:53:57,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:53:57,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 108 transitions, 830 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 22:53:57,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:57,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:53:57,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:59,689 INFO L124 PetriNetUnfolderBase]: 4387/6996 cut-off events. [2024-06-27 22:53:59,689 INFO L125 PetriNetUnfolderBase]: For 30694/30696 co-relation queries the response was YES. [2024-06-27 22:53:59,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26037 conditions, 6996 events. 4387/6996 cut-off events. For 30694/30696 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 44014 event pairs, 1712 based on Foata normal form. 26/6840 useless extension candidates. Maximal degree in co-relation 25999. Up to 5815 conditions per place. [2024-06-27 22:53:59,731 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 135 selfloop transitions, 29 changer transitions 0/177 dead transitions. [2024-06-27 22:53:59,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 177 transitions, 1468 flow [2024-06-27 22:53:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 22:53:59,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-27 22:53:59,736 INFO L175 Difference]: Start difference. First operand has 94 places, 108 transitions, 830 flow. Second operand 8 states and 203 transitions. [2024-06-27 22:53:59,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 177 transitions, 1468 flow [2024-06-27 22:53:59,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 177 transitions, 1400 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:59,780 INFO L231 Difference]: Finished difference. Result has 100 places, 126 transitions, 1024 flow [2024-06-27 22:53:59,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1024, PETRI_PLACES=100, PETRI_TRANSITIONS=126} [2024-06-27 22:53:59,782 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-27 22:53:59,782 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 126 transitions, 1024 flow [2024-06-27 22:53:59,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 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 22:53:59,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:59,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:59,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:53:59,783 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:59,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash 411865141, now seen corresponding path program 1 times [2024-06-27 22:53:59,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:59,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053162639] [2024-06-27 22:53:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:02,997 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 22:54:02,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:02,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053162639] [2024-06-27 22:54:02,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053162639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:02,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:02,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380147751] [2024-06-27 22:54:02,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:02,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:02,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:03,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:03,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 126 transitions, 1024 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:03,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:03,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:03,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:04,879 INFO L124 PetriNetUnfolderBase]: 4732/7419 cut-off events. [2024-06-27 22:54:04,879 INFO L125 PetriNetUnfolderBase]: For 42130/42130 co-relation queries the response was YES. [2024-06-27 22:54:04,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31495 conditions, 7419 events. 4732/7419 cut-off events. For 42130/42130 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 45250 event pairs, 1984 based on Foata normal form. 2/7225 useless extension candidates. Maximal degree in co-relation 31454. Up to 6658 conditions per place. [2024-06-27 22:54:04,928 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 134 selfloop transitions, 40 changer transitions 2/184 dead transitions. [2024-06-27 22:54:04,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 184 transitions, 1605 flow [2024-06-27 22:54:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 22:54:04,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-27 22:54:04,931 INFO L175 Difference]: Start difference. First operand has 100 places, 126 transitions, 1024 flow. Second operand 8 states and 194 transitions. [2024-06-27 22:54:04,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 184 transitions, 1605 flow [2024-06-27 22:54:04,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 184 transitions, 1572 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:04,972 INFO L231 Difference]: Finished difference. Result has 107 places, 135 transitions, 1198 flow [2024-06-27 22:54:04,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1198, PETRI_PLACES=107, PETRI_TRANSITIONS=135} [2024-06-27 22:54:04,973 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-27 22:54:04,973 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 135 transitions, 1198 flow [2024-06-27 22:54:04,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:04,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:04,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:54:04,974 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:04,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2108548153, now seen corresponding path program 2 times [2024-06-27 22:54:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950730839] [2024-06-27 22:54:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:08,409 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 22:54:08,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:08,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950730839] [2024-06-27 22:54:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950730839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:08,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:08,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:08,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464826191] [2024-06-27 22:54:08,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:08,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:08,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:08,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:08,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 135 transitions, 1198 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:08,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:08,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:08,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:10,280 INFO L124 PetriNetUnfolderBase]: 4788/7502 cut-off events. [2024-06-27 22:54:10,280 INFO L125 PetriNetUnfolderBase]: For 48600/48600 co-relation queries the response was YES. [2024-06-27 22:54:10,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32857 conditions, 7502 events. 4788/7502 cut-off events. For 48600/48600 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 45732 event pairs, 1954 based on Foata normal form. 2/7304 useless extension candidates. Maximal degree in co-relation 32813. Up to 6573 conditions per place. [2024-06-27 22:54:10,342 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 118 selfloop transitions, 66 changer transitions 3/195 dead transitions. [2024-06-27 22:54:10,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 195 transitions, 1886 flow [2024-06-27 22:54:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:10,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 22:54:10,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2024-06-27 22:54:10,345 INFO L175 Difference]: Start difference. First operand has 107 places, 135 transitions, 1198 flow. Second operand 7 states and 185 transitions. [2024-06-27 22:54:10,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 195 transitions, 1886 flow [2024-06-27 22:54:10,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 195 transitions, 1838 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:10,405 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 1453 flow [2024-06-27 22:54:10,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1453, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-27 22:54:10,406 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-27 22:54:10,406 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 1453 flow [2024-06-27 22:54:10,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:10,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:10,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:10,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:54:10,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:10,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:10,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2108844823, now seen corresponding path program 3 times [2024-06-27 22:54:10,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:10,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764967476] [2024-06-27 22:54:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:10,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:14,105 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 22:54:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:14,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764967476] [2024-06-27 22:54:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764967476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:14,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:14,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:14,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001998763] [2024-06-27 22:54:14,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:14,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:14,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:14,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:14,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:14,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:14,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 1453 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:14,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:14,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:14,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:15,929 INFO L124 PetriNetUnfolderBase]: 4964/7697 cut-off events. [2024-06-27 22:54:15,929 INFO L125 PetriNetUnfolderBase]: For 60988/60988 co-relation queries the response was YES. [2024-06-27 22:54:15,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36063 conditions, 7697 events. 4964/7697 cut-off events. For 60988/60988 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 46827 event pairs, 1798 based on Foata normal form. 4/7511 useless extension candidates. Maximal degree in co-relation 36016. Up to 6770 conditions per place. [2024-06-27 22:54:15,981 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 147 selfloop transitions, 63 changer transitions 1/219 dead transitions. [2024-06-27 22:54:15,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 219 transitions, 2437 flow [2024-06-27 22:54:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:54:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:54:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 22:54:15,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505952380952381 [2024-06-27 22:54:15,983 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 1453 flow. Second operand 7 states and 185 transitions. [2024-06-27 22:54:15,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 219 transitions, 2437 flow [2024-06-27 22:54:16,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 219 transitions, 2344 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 22:54:16,057 INFO L231 Difference]: Finished difference. Result has 122 places, 175 transitions, 1958 flow [2024-06-27 22:54:16,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1958, PETRI_PLACES=122, PETRI_TRANSITIONS=175} [2024-06-27 22:54:16,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-27 22:54:16,058 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 175 transitions, 1958 flow [2024-06-27 22:54:16,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:16,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:16,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:16,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:54:16,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:16,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:16,059 INFO L85 PathProgramCache]: Analyzing trace with hash 413163949, now seen corresponding path program 4 times [2024-06-27 22:54:16,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:16,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506970982] [2024-06-27 22:54:16,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:16,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:18,579 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 22:54:18,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506970982] [2024-06-27 22:54:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506970982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:18,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:18,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:18,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740947745] [2024-06-27 22:54:18,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:18,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:18,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:18,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:18,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 175 transitions, 1958 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:18,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:18,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:18,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:20,661 INFO L124 PetriNetUnfolderBase]: 5033/7871 cut-off events. [2024-06-27 22:54:20,661 INFO L125 PetriNetUnfolderBase]: For 70279/70279 co-relation queries the response was YES. [2024-06-27 22:54:20,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39265 conditions, 7871 events. 5033/7871 cut-off events. For 70279/70279 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 48011 event pairs, 1887 based on Foata normal form. 2/7673 useless extension candidates. Maximal degree in co-relation 39211. Up to 7047 conditions per place. [2024-06-27 22:54:20,720 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 190 selfloop transitions, 52 changer transitions 2/252 dead transitions. [2024-06-27 22:54:20,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 252 transitions, 2803 flow [2024-06-27 22:54:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-27 22:54:20,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 22:54:20,721 INFO L175 Difference]: Start difference. First operand has 122 places, 175 transitions, 1958 flow. Second operand 8 states and 210 transitions. [2024-06-27 22:54:20,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 252 transitions, 2803 flow [2024-06-27 22:54:20,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 252 transitions, 2685 flow, removed 59 selfloop flow, removed 0 redundant places. [2024-06-27 22:54:20,811 INFO L231 Difference]: Finished difference. Result has 131 places, 191 transitions, 2206 flow [2024-06-27 22:54:20,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2206, PETRI_PLACES=131, PETRI_TRANSITIONS=191} [2024-06-27 22:54:20,811 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-27 22:54:20,812 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 191 transitions, 2206 flow [2024-06-27 22:54:20,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:20,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:20,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:20,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:54:20,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:20,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash 845317561, now seen corresponding path program 1 times [2024-06-27 22:54:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:20,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099728597] [2024-06-27 22:54:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:20,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:23,870 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 22:54:23,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:23,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099728597] [2024-06-27 22:54:23,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099728597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:23,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:23,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888227806] [2024-06-27 22:54:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:23,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:23,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 191 transitions, 2206 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:23,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:23,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:23,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:26,253 INFO L124 PetriNetUnfolderBase]: 5133/7949 cut-off events. [2024-06-27 22:54:26,254 INFO L125 PetriNetUnfolderBase]: For 74552/74552 co-relation queries the response was YES. [2024-06-27 22:54:26,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40466 conditions, 7949 events. 5133/7949 cut-off events. For 74552/74552 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 48059 event pairs, 1905 based on Foata normal form. 3/7765 useless extension candidates. Maximal degree in co-relation 40407. Up to 7142 conditions per place. [2024-06-27 22:54:26,310 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 204 selfloop transitions, 64 changer transitions 0/276 dead transitions. [2024-06-27 22:54:26,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 276 transitions, 3329 flow [2024-06-27 22:54:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:54:26,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:54:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 251 transitions. [2024-06-27 22:54:26,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753787878787879 [2024-06-27 22:54:26,312 INFO L175 Difference]: Start difference. First operand has 131 places, 191 transitions, 2206 flow. Second operand 11 states and 251 transitions. [2024-06-27 22:54:26,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 276 transitions, 3329 flow [2024-06-27 22:54:26,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 276 transitions, 3226 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:26,403 INFO L231 Difference]: Finished difference. Result has 141 places, 224 transitions, 2717 flow [2024-06-27 22:54:26,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2717, PETRI_PLACES=141, PETRI_TRANSITIONS=224} [2024-06-27 22:54:26,404 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-27 22:54:26,404 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 224 transitions, 2717 flow [2024-06-27 22:54:26,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:26,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:26,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:26,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:54:26,405 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:26,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:26,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1206186481, now seen corresponding path program 2 times [2024-06-27 22:54:26,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:26,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603818150] [2024-06-27 22:54:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:26,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:29,246 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 22:54:29,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:29,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603818150] [2024-06-27 22:54:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603818150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:29,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:29,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:29,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325340141] [2024-06-27 22:54:29,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:29,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:29,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:29,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:29,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 224 transitions, 2717 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:29,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:29,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:29,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:31,602 INFO L124 PetriNetUnfolderBase]: 5191/8043 cut-off events. [2024-06-27 22:54:31,603 INFO L125 PetriNetUnfolderBase]: For 80505/80505 co-relation queries the response was YES. [2024-06-27 22:54:31,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41480 conditions, 8043 events. 5191/8043 cut-off events. For 80505/80505 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 48796 event pairs, 1941 based on Foata normal form. 3/7859 useless extension candidates. Maximal degree in co-relation 41417. Up to 7146 conditions per place. [2024-06-27 22:54:31,663 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 195 selfloop transitions, 69 changer transitions 0/272 dead transitions. [2024-06-27 22:54:31,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 272 transitions, 3523 flow [2024-06-27 22:54:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:54:31,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-27 22:54:31,665 INFO L175 Difference]: Start difference. First operand has 141 places, 224 transitions, 2717 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:54:31,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 272 transitions, 3523 flow [2024-06-27 22:54:31,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 272 transitions, 3283 flow, removed 95 selfloop flow, removed 3 redundant places. [2024-06-27 22:54:31,774 INFO L231 Difference]: Finished difference. Result has 147 places, 233 transitions, 2796 flow [2024-06-27 22:54:31,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2796, PETRI_PLACES=147, PETRI_TRANSITIONS=233} [2024-06-27 22:54:31,775 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-27 22:54:31,775 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 233 transitions, 2796 flow [2024-06-27 22:54:31,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:31,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:31,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:31,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:54:31,776 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:31,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:31,776 INFO L85 PathProgramCache]: Analyzing trace with hash 509191931, now seen corresponding path program 1 times [2024-06-27 22:54:31,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:31,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798384339] [2024-06-27 22:54:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:31,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:35,334 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 22:54:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:35,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798384339] [2024-06-27 22:54:35,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798384339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:35,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:35,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:35,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107137385] [2024-06-27 22:54:35,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:35,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:35,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:35,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 233 transitions, 2796 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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 22:54:35,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:35,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:35,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:38,126 INFO L124 PetriNetUnfolderBase]: 5751/8879 cut-off events. [2024-06-27 22:54:38,126 INFO L125 PetriNetUnfolderBase]: For 103913/103913 co-relation queries the response was YES. [2024-06-27 22:54:38,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47623 conditions, 8879 events. 5751/8879 cut-off events. For 103913/103913 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 54422 event pairs, 1900 based on Foata normal form. 34/8723 useless extension candidates. Maximal degree in co-relation 47558. Up to 7394 conditions per place. [2024-06-27 22:54:38,191 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 219 selfloop transitions, 78 changer transitions 2/307 dead transitions. [2024-06-27 22:54:38,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 307 transitions, 3822 flow [2024-06-27 22:54:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:54:38,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:54:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-27 22:54:38,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-27 22:54:38,192 INFO L175 Difference]: Start difference. First operand has 147 places, 233 transitions, 2796 flow. Second operand 9 states and 229 transitions. [2024-06-27 22:54:38,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 307 transitions, 3822 flow [2024-06-27 22:54:38,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 307 transitions, 3641 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 22:54:38,332 INFO L231 Difference]: Finished difference. Result has 152 places, 247 transitions, 3001 flow [2024-06-27 22:54:38,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3001, PETRI_PLACES=152, PETRI_TRANSITIONS=247} [2024-06-27 22:54:38,333 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 98 predicate places. [2024-06-27 22:54:38,333 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 247 transitions, 3001 flow [2024-06-27 22:54:38,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 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 22:54:38,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:38,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:38,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:54:38,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:38,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash -949685971, now seen corresponding path program 3 times [2024-06-27 22:54:38,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:38,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308656104] [2024-06-27 22:54:38,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:38,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:41,838 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 22:54:41,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:41,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308656104] [2024-06-27 22:54:41,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308656104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:41,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:41,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:54:41,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371037183] [2024-06-27 22:54:41,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:41,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:54:41,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:41,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:54:41,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:54:41,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:41,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 247 transitions, 3001 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:41,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:41,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:41,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:44,319 INFO L124 PetriNetUnfolderBase]: 5809/9054 cut-off events. [2024-06-27 22:54:44,319 INFO L125 PetriNetUnfolderBase]: For 116178/116178 co-relation queries the response was YES. [2024-06-27 22:54:44,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50718 conditions, 9054 events. 5809/9054 cut-off events. For 116178/116178 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 56132 event pairs, 2046 based on Foata normal form. 3/8841 useless extension candidates. Maximal degree in co-relation 50651. Up to 7882 conditions per place. [2024-06-27 22:54:44,391 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 191 selfloop transitions, 96 changer transitions 0/295 dead transitions. [2024-06-27 22:54:44,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 295 transitions, 3939 flow [2024-06-27 22:54:44,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:54:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:54:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 22:54:44,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-06-27 22:54:44,394 INFO L175 Difference]: Start difference. First operand has 152 places, 247 transitions, 3001 flow. Second operand 8 states and 191 transitions. [2024-06-27 22:54:44,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 295 transitions, 3939 flow [2024-06-27 22:54:44,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 295 transitions, 3800 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-27 22:54:44,589 INFO L231 Difference]: Finished difference. Result has 155 places, 257 transitions, 3251 flow [2024-06-27 22:54:44,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2862, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3251, PETRI_PLACES=155, PETRI_TRANSITIONS=257} [2024-06-27 22:54:44,590 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-27 22:54:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 257 transitions, 3251 flow [2024-06-27 22:54:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:54:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:44,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:44,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:54:44,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:44,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:44,591 INFO L85 PathProgramCache]: Analyzing trace with hash -806139265, now seen corresponding path program 2 times [2024-06-27 22:54:44,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:44,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192608926] [2024-06-27 22:54:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:44,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:48,052 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 22:54:48,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192608926] [2024-06-27 22:54:48,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192608926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:48,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:48,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:54:48,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415879401] [2024-06-27 22:54:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:54:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:54:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:54:48,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:48,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 257 transitions, 3251 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:48,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:48,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:48,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:50,462 INFO L124 PetriNetUnfolderBase]: 5875/9240 cut-off events. [2024-06-27 22:54:50,462 INFO L125 PetriNetUnfolderBase]: For 122145/122145 co-relation queries the response was YES. [2024-06-27 22:54:50,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52252 conditions, 9240 events. 5875/9240 cut-off events. For 122145/122145 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 57986 event pairs, 1985 based on Foata normal form. 4/9014 useless extension candidates. Maximal degree in co-relation 52183. Up to 8156 conditions per place. [2024-06-27 22:54:50,544 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 241 selfloop transitions, 70 changer transitions 4/323 dead transitions. [2024-06-27 22:54:50,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 323 transitions, 4145 flow [2024-06-27 22:54:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:54:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:54:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:54:50,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:54:50,546 INFO L175 Difference]: Start difference. First operand has 155 places, 257 transitions, 3251 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:54:50,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 323 transitions, 4145 flow [2024-06-27 22:54:50,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 323 transitions, 4005 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:50,744 INFO L231 Difference]: Finished difference. Result has 161 places, 262 transitions, 3363 flow [2024-06-27 22:54:50,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3363, PETRI_PLACES=161, PETRI_TRANSITIONS=262} [2024-06-27 22:54:50,745 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 22:54:50,745 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 262 transitions, 3363 flow [2024-06-27 22:54:50,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:50,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:50,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:50,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:54:50,746 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:50,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash -940154835, now seen corresponding path program 3 times [2024-06-27 22:54:50,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:50,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028519485] [2024-06-27 22:54:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:54,434 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 22:54:54,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028519485] [2024-06-27 22:54:54,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028519485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:54,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:54:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804819138] [2024-06-27 22:54:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:54:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:54:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:54:54,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:54:54,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 262 transitions, 3363 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:54,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:54,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:54:54,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:54:56,944 INFO L124 PetriNetUnfolderBase]: 5966/9357 cut-off events. [2024-06-27 22:54:56,944 INFO L125 PetriNetUnfolderBase]: For 135197/135197 co-relation queries the response was YES. [2024-06-27 22:54:56,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54195 conditions, 9357 events. 5966/9357 cut-off events. For 135197/135197 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 58608 event pairs, 1785 based on Foata normal form. 4/9133 useless extension candidates. Maximal degree in co-relation 54123. Up to 7882 conditions per place. [2024-06-27 22:54:57,033 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 222 selfloop transitions, 102 changer transitions 4/336 dead transitions. [2024-06-27 22:54:57,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 336 transitions, 4470 flow [2024-06-27 22:54:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:54:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:54:57,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:54:57,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2024-06-27 22:54:57,034 INFO L175 Difference]: Start difference. First operand has 161 places, 262 transitions, 3363 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:54:57,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 336 transitions, 4470 flow [2024-06-27 22:54:57,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 336 transitions, 4232 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 22:54:57,259 INFO L231 Difference]: Finished difference. Result has 165 places, 270 transitions, 3512 flow [2024-06-27 22:54:57,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3125, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3512, PETRI_PLACES=165, PETRI_TRANSITIONS=270} [2024-06-27 22:54:57,260 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-27 22:54:57,260 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 270 transitions, 3512 flow [2024-06-27 22:54:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:57,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:57,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:57,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:54:57,261 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:57,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash 25429545, now seen corresponding path program 4 times [2024-06-27 22:54:57,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:57,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55626424] [2024-06-27 22:54:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:00,490 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 22:55:00,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:00,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55626424] [2024-06-27 22:55:00,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55626424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:00,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:00,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132919712] [2024-06-27 22:55:00,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:00,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:00,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:00,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:00,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 270 transitions, 3512 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:00,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:00,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:00,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:03,171 INFO L124 PetriNetUnfolderBase]: 6021/9450 cut-off events. [2024-06-27 22:55:03,171 INFO L125 PetriNetUnfolderBase]: For 148240/148240 co-relation queries the response was YES. [2024-06-27 22:55:03,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56288 conditions, 9450 events. 6021/9450 cut-off events. For 148240/148240 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 59363 event pairs, 1918 based on Foata normal form. 4/9221 useless extension candidates. Maximal degree in co-relation 56214. Up to 8240 conditions per place. [2024-06-27 22:55:03,263 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 228 selfloop transitions, 95 changer transitions 4/335 dead transitions. [2024-06-27 22:55:03,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 335 transitions, 4440 flow [2024-06-27 22:55:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:03,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:55:03,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:55:03,265 INFO L175 Difference]: Start difference. First operand has 165 places, 270 transitions, 3512 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:55:03,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 335 transitions, 4440 flow [2024-06-27 22:55:03,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 335 transitions, 4262 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:55:03,533 INFO L231 Difference]: Finished difference. Result has 169 places, 272 transitions, 3591 flow [2024-06-27 22:55:03,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3344, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3591, PETRI_PLACES=169, PETRI_TRANSITIONS=272} [2024-06-27 22:55:03,533 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 115 predicate places. [2024-06-27 22:55:03,533 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 272 transitions, 3591 flow [2024-06-27 22:55:03,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:03,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:03,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:03,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:55:03,534 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:03,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:03,534 INFO L85 PathProgramCache]: Analyzing trace with hash -81616727, now seen corresponding path program 4 times [2024-06-27 22:55:03,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:03,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893017886] [2024-06-27 22:55:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:03,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:05,756 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 22:55:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893017886] [2024-06-27 22:55:05,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893017886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:05,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:05,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485235060] [2024-06-27 22:55:05,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:05,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:05,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 272 transitions, 3591 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:55:05,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:05,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:05,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:08,165 INFO L124 PetriNetUnfolderBase]: 6126/9514 cut-off events. [2024-06-27 22:55:08,165 INFO L125 PetriNetUnfolderBase]: For 147116/147116 co-relation queries the response was YES. [2024-06-27 22:55:08,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57364 conditions, 9514 events. 6126/9514 cut-off events. For 147116/147116 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 59037 event pairs, 2011 based on Foata normal form. 2/9315 useless extension candidates. Maximal degree in co-relation 57288. Up to 8629 conditions per place. [2024-06-27 22:55:08,256 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 285 selfloop transitions, 53 changer transitions 0/346 dead transitions. [2024-06-27 22:55:08,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 346 transitions, 4729 flow [2024-06-27 22:55:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:55:08,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 22:55:08,257 INFO L175 Difference]: Start difference. First operand has 169 places, 272 transitions, 3591 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:55:08,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 346 transitions, 4729 flow [2024-06-27 22:55:08,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 346 transitions, 4516 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 22:55:08,487 INFO L231 Difference]: Finished difference. Result has 171 places, 298 transitions, 3874 flow [2024-06-27 22:55:08,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3874, PETRI_PLACES=171, PETRI_TRANSITIONS=298} [2024-06-27 22:55:08,488 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-27 22:55:08,488 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 298 transitions, 3874 flow [2024-06-27 22:55:08,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:55:08,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:08,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:08,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:55:08,489 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:08,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash 546823815, now seen corresponding path program 5 times [2024-06-27 22:55:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:08,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872716060] [2024-06-27 22:55:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:08,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:11,142 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 22:55:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872716060] [2024-06-27 22:55:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872716060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:11,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:11,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609108403] [2024-06-27 22:55:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:11,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:11,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:11,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:11,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 298 transitions, 3874 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:55:11,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:11,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:11,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:13,880 INFO L124 PetriNetUnfolderBase]: 6245/9705 cut-off events. [2024-06-27 22:55:13,880 INFO L125 PetriNetUnfolderBase]: For 150268/150268 co-relation queries the response was YES. [2024-06-27 22:55:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58529 conditions, 9705 events. 6245/9705 cut-off events. For 150268/150268 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 60386 event pairs, 2047 based on Foata normal form. 3/9507 useless extension candidates. Maximal degree in co-relation 58451. Up to 8534 conditions per place. [2024-06-27 22:55:13,973 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 253 selfloop transitions, 118 changer transitions 0/379 dead transitions. [2024-06-27 22:55:13,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 379 transitions, 5245 flow [2024-06-27 22:55:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 22:55:13,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:55:13,975 INFO L175 Difference]: Start difference. First operand has 171 places, 298 transitions, 3874 flow. Second operand 8 states and 208 transitions. [2024-06-27 22:55:13,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 379 transitions, 5245 flow [2024-06-27 22:55:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 379 transitions, 5145 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-27 22:55:14,271 INFO L231 Difference]: Finished difference. Result has 179 places, 326 transitions, 4493 flow [2024-06-27 22:55:14,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4493, PETRI_PLACES=179, PETRI_TRANSITIONS=326} [2024-06-27 22:55:14,271 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-27 22:55:14,272 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 326 transitions, 4493 flow [2024-06-27 22:55:14,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:55:14,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:14,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:14,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:55:14,272 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:14,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:14,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1763509383, now seen corresponding path program 6 times [2024-06-27 22:55:14,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:14,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459858497] [2024-06-27 22:55:14,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:14,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:16,204 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 22:55:16,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:16,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459858497] [2024-06-27 22:55:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459858497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:16,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:16,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:55:16,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474353702] [2024-06-27 22:55:16,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:16,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:55:16,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:16,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:55:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:55:16,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:16,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 326 transitions, 4493 flow. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:55:16,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:16,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:16,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:18,667 INFO L124 PetriNetUnfolderBase]: 6296/9786 cut-off events. [2024-06-27 22:55:18,667 INFO L125 PetriNetUnfolderBase]: For 155572/155572 co-relation queries the response was YES. [2024-06-27 22:55:18,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60066 conditions, 9786 events. 6296/9786 cut-off events. For 155572/155572 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 60864 event pairs, 2049 based on Foata normal form. 2/9587 useless extension candidates. Maximal degree in co-relation 59984. Up to 8833 conditions per place. [2024-06-27 22:55:18,766 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 321 selfloop transitions, 70 changer transitions 0/399 dead transitions. [2024-06-27 22:55:18,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 399 transitions, 5797 flow [2024-06-27 22:55:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:55:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:55:18,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:55:18,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-27 22:55:18,768 INFO L175 Difference]: Start difference. First operand has 179 places, 326 transitions, 4493 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:55:18,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 399 transitions, 5797 flow [2024-06-27 22:55:19,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 399 transitions, 5503 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:19,068 INFO L231 Difference]: Finished difference. Result has 185 places, 350 transitions, 4799 flow [2024-06-27 22:55:19,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4241, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4799, PETRI_PLACES=185, PETRI_TRANSITIONS=350} [2024-06-27 22:55:19,069 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-27 22:55:19,069 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 350 transitions, 4799 flow [2024-06-27 22:55:19,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 22:55:19,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:19,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:19,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:55:19,070 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:19,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:19,070 INFO L85 PathProgramCache]: Analyzing trace with hash 546831751, now seen corresponding path program 5 times [2024-06-27 22:55:19,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:19,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290879773] [2024-06-27 22:55:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:19,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:21,946 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 22:55:21,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:21,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290879773] [2024-06-27 22:55:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290879773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:21,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:21,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:21,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753935441] [2024-06-27 22:55:21,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:21,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:21,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:21,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:21,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 350 transitions, 4799 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:21,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:21,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:21,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:24,822 INFO L124 PetriNetUnfolderBase]: 6366/9989 cut-off events. [2024-06-27 22:55:24,822 INFO L125 PetriNetUnfolderBase]: For 163644/163644 co-relation queries the response was YES. [2024-06-27 22:55:24,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60894 conditions, 9989 events. 6366/9989 cut-off events. For 163644/163644 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 62932 event pairs, 2033 based on Foata normal form. 4/9760 useless extension candidates. Maximal degree in co-relation 60809. Up to 8848 conditions per place. [2024-06-27 22:55:24,932 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 356 selfloop transitions, 64 changer transitions 3/431 dead transitions. [2024-06-27 22:55:24,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 431 transitions, 6000 flow [2024-06-27 22:55:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-27 22:55:24,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 22:55:24,934 INFO L175 Difference]: Start difference. First operand has 185 places, 350 transitions, 4799 flow. Second operand 9 states and 236 transitions. [2024-06-27 22:55:24,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 431 transitions, 6000 flow [2024-06-27 22:55:25,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 431 transitions, 5823 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 22:55:25,414 INFO L231 Difference]: Finished difference. Result has 189 places, 357 transitions, 4917 flow [2024-06-27 22:55:25,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4640, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4917, PETRI_PLACES=189, PETRI_TRANSITIONS=357} [2024-06-27 22:55:25,414 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2024-06-27 22:55:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 357 transitions, 4917 flow [2024-06-27 22:55:25,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:25,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:25,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:25,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:55:25,415 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:25,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2074575918, now seen corresponding path program 1 times [2024-06-27 22:55:25,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481408358] [2024-06-27 22:55:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:28,064 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 22:55:28,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:28,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481408358] [2024-06-27 22:55:28,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481408358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:28,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:28,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:55:28,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983447723] [2024-06-27 22:55:28,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:55:28,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:55:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:55:28,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:28,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 357 transitions, 4917 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:28,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:28,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:28,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:30,577 INFO L124 PetriNetUnfolderBase]: 6354/9953 cut-off events. [2024-06-27 22:55:30,578 INFO L125 PetriNetUnfolderBase]: For 166756/166756 co-relation queries the response was YES. [2024-06-27 22:55:30,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60787 conditions, 9953 events. 6354/9953 cut-off events. For 166756/166756 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 62844 event pairs, 2135 based on Foata normal form. 4/9721 useless extension candidates. Maximal degree in co-relation 60702. Up to 9006 conditions per place. [2024-06-27 22:55:30,668 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 353 selfloop transitions, 20 changer transitions 0/381 dead transitions. [2024-06-27 22:55:30,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 381 transitions, 5748 flow [2024-06-27 22:55:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:55:30,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:55:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-27 22:55:30,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-27 22:55:30,670 INFO L175 Difference]: Start difference. First operand has 189 places, 357 transitions, 4917 flow. Second operand 7 states and 150 transitions. [2024-06-27 22:55:30,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 381 transitions, 5748 flow [2024-06-27 22:55:30,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 381 transitions, 5551 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:55:30,941 INFO L231 Difference]: Finished difference. Result has 188 places, 357 transitions, 4762 flow [2024-06-27 22:55:30,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4762, PETRI_PLACES=188, PETRI_TRANSITIONS=357} [2024-06-27 22:55:30,941 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 22:55:30,942 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 357 transitions, 4762 flow [2024-06-27 22:55:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:30,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:30,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:30,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:55:30,942 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:30,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1408831218, now seen corresponding path program 1 times [2024-06-27 22:55:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:30,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683767479] [2024-06-27 22:55:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:34,987 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 22:55:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683767479] [2024-06-27 22:55:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683767479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:34,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:34,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382722374] [2024-06-27 22:55:34,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:34,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:35,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:35,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 357 transitions, 4762 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:35,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:35,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:35,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:38,172 INFO L124 PetriNetUnfolderBase]: 6551/10232 cut-off events. [2024-06-27 22:55:38,172 INFO L125 PetriNetUnfolderBase]: For 172869/172869 co-relation queries the response was YES. [2024-06-27 22:55:38,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63367 conditions, 10232 events. 6551/10232 cut-off events. For 172869/172869 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 64611 event pairs, 1996 based on Foata normal form. 3/9988 useless extension candidates. Maximal degree in co-relation 63282. Up to 8585 conditions per place. [2024-06-27 22:55:38,480 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 288 selfloop transitions, 145 changer transitions 3/444 dead transitions. [2024-06-27 22:55:38,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 444 transitions, 6378 flow [2024-06-27 22:55:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:55:38,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:55:38,482 INFO L175 Difference]: Start difference. First operand has 188 places, 357 transitions, 4762 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:55:38,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 444 transitions, 6378 flow [2024-06-27 22:55:38,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 444 transitions, 6315 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:55:38,778 INFO L231 Difference]: Finished difference. Result has 191 places, 374 transitions, 5326 flow [2024-06-27 22:55:38,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4699, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5326, PETRI_PLACES=191, PETRI_TRANSITIONS=374} [2024-06-27 22:55:38,779 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-27 22:55:38,779 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 374 transitions, 5326 flow [2024-06-27 22:55:38,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:38,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:38,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:38,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:55:38,779 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:38,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash 583574782, now seen corresponding path program 2 times [2024-06-27 22:55:38,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:38,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048948758] [2024-06-27 22:55:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:42,549 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 22:55:42,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:42,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048948758] [2024-06-27 22:55:42,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048948758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:42,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:42,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:42,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151955304] [2024-06-27 22:55:42,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:42,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:42,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:42,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:42,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:42,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:42,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 374 transitions, 5326 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:42,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:42,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:42,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:45,717 INFO L124 PetriNetUnfolderBase]: 6613/10241 cut-off events. [2024-06-27 22:55:45,718 INFO L125 PetriNetUnfolderBase]: For 195292/195292 co-relation queries the response was YES. [2024-06-27 22:55:45,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66864 conditions, 10241 events. 6613/10241 cut-off events. For 195292/195292 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 64010 event pairs, 2096 based on Foata normal form. 3/10022 useless extension candidates. Maximal degree in co-relation 66780. Up to 8993 conditions per place. [2024-06-27 22:55:45,818 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 294 selfloop transitions, 126 changer transitions 1/429 dead transitions. [2024-06-27 22:55:45,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 429 transitions, 6507 flow [2024-06-27 22:55:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:45,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:55:45,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:55:45,820 INFO L175 Difference]: Start difference. First operand has 191 places, 374 transitions, 5326 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:55:45,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 429 transitions, 6507 flow [2024-06-27 22:55:46,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 429 transitions, 6451 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-27 22:55:46,153 INFO L231 Difference]: Finished difference. Result has 197 places, 378 transitions, 5624 flow [2024-06-27 22:55:46,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5272, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5624, PETRI_PLACES=197, PETRI_TRANSITIONS=378} [2024-06-27 22:55:46,154 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-27 22:55:46,154 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 378 transitions, 5624 flow [2024-06-27 22:55:46,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:46,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:46,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:46,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:55:46,155 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:46,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash 624745128, now seen corresponding path program 3 times [2024-06-27 22:55:46,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:46,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590069251] [2024-06-27 22:55:46,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:46,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:50,311 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 22:55:50,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:50,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590069251] [2024-06-27 22:55:50,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590069251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:50,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:50,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:50,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394942591] [2024-06-27 22:55:50,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:50,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:50,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:50,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:50,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:50,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:50,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 378 transitions, 5624 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:50,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:50,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:50,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:55:53,543 INFO L124 PetriNetUnfolderBase]: 6860/10683 cut-off events. [2024-06-27 22:55:53,543 INFO L125 PetriNetUnfolderBase]: For 219244/219244 co-relation queries the response was YES. [2024-06-27 22:55:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71708 conditions, 10683 events. 6860/10683 cut-off events. For 219244/219244 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 67621 event pairs, 2048 based on Foata normal form. 3/10432 useless extension candidates. Maximal degree in co-relation 71623. Up to 8766 conditions per place. [2024-06-27 22:55:53,661 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 257 selfloop transitions, 196 changer transitions 4/465 dead transitions. [2024-06-27 22:55:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 465 transitions, 7453 flow [2024-06-27 22:55:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:55:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:55:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 22:55:53,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 22:55:53,663 INFO L175 Difference]: Start difference. First operand has 197 places, 378 transitions, 5624 flow. Second operand 9 states and 233 transitions. [2024-06-27 22:55:53,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 465 transitions, 7453 flow [2024-06-27 22:55:54,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 465 transitions, 7149 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 22:55:54,084 INFO L231 Difference]: Finished difference. Result has 202 places, 397 transitions, 6265 flow [2024-06-27 22:55:54,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5320, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6265, PETRI_PLACES=202, PETRI_TRANSITIONS=397} [2024-06-27 22:55:54,085 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-27 22:55:54,085 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 397 transitions, 6265 flow [2024-06-27 22:55:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:54,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:55:54,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:55:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:55:54,086 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:55:54,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:55:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash 624507978, now seen corresponding path program 4 times [2024-06-27 22:55:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:55:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256904400] [2024-06-27 22:55:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:55:54,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:55:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:55:57,567 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 22:55:57,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:55:57,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256904400] [2024-06-27 22:55:57,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256904400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:55:57,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:55:57,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:55:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612765900] [2024-06-27 22:55:57,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:55:57,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:55:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:55:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:55:57,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:55:57,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:55:57,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 397 transitions, 6265 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:55:57,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:55:57,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:55:57,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:00,747 INFO L124 PetriNetUnfolderBase]: 6894/10665 cut-off events. [2024-06-27 22:56:00,747 INFO L125 PetriNetUnfolderBase]: For 248794/248794 co-relation queries the response was YES. [2024-06-27 22:56:00,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75600 conditions, 10665 events. 6894/10665 cut-off events. For 248794/248794 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 67189 event pairs, 2149 based on Foata normal form. 3/10432 useless extension candidates. Maximal degree in co-relation 75511. Up to 9195 conditions per place. [2024-06-27 22:56:00,870 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 276 selfloop transitions, 165 changer transitions 1/450 dead transitions. [2024-06-27 22:56:00,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 450 transitions, 7502 flow [2024-06-27 22:56:00,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:56:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:56:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:56:00,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-27 22:56:00,871 INFO L175 Difference]: Start difference. First operand has 202 places, 397 transitions, 6265 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:56:00,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 450 transitions, 7502 flow [2024-06-27 22:56:01,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 450 transitions, 7326 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-27 22:56:01,392 INFO L231 Difference]: Finished difference. Result has 208 places, 401 transitions, 6539 flow [2024-06-27 22:56:01,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6097, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6539, PETRI_PLACES=208, PETRI_TRANSITIONS=401} [2024-06-27 22:56:01,393 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-27 22:56:01,393 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 401 transitions, 6539 flow [2024-06-27 22:56:01,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:01,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:01,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:56:01,394 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:01,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash 909844998, now seen corresponding path program 5 times [2024-06-27 22:56:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19930092] [2024-06-27 22:56:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:01,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:05,199 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 22:56:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19930092] [2024-06-27 22:56:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19930092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856562909] [2024-06-27 22:56:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:05,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:05,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:05,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:56:05,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 401 transitions, 6539 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:05,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:05,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:56:05,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:08,544 INFO L124 PetriNetUnfolderBase]: 7199/11167 cut-off events. [2024-06-27 22:56:08,544 INFO L125 PetriNetUnfolderBase]: For 265322/265322 co-relation queries the response was YES. [2024-06-27 22:56:08,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80211 conditions, 11167 events. 7199/11167 cut-off events. For 265322/265322 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 71134 event pairs, 2039 based on Foata normal form. 3/10915 useless extension candidates. Maximal degree in co-relation 80120. Up to 9100 conditions per place. [2024-06-27 22:56:08,671 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 301 selfloop transitions, 183 changer transitions 3/495 dead transitions. [2024-06-27 22:56:08,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 495 transitions, 8593 flow [2024-06-27 22:56:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:56:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:56:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-27 22:56:08,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:56:08,673 INFO L175 Difference]: Start difference. First operand has 208 places, 401 transitions, 6539 flow. Second operand 9 states and 228 transitions. [2024-06-27 22:56:08,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 495 transitions, 8593 flow [2024-06-27 22:56:09,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 495 transitions, 8206 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 22:56:09,377 INFO L231 Difference]: Finished difference. Result has 212 places, 427 transitions, 7024 flow [2024-06-27 22:56:09,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6152, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7024, PETRI_PLACES=212, PETRI_TRANSITIONS=427} [2024-06-27 22:56:09,378 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 158 predicate places. [2024-06-27 22:56:09,378 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 427 transitions, 7024 flow [2024-06-27 22:56:09,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:09,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:09,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:09,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:56:09,379 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:09,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash 698092224, now seen corresponding path program 6 times [2024-06-27 22:56:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:09,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46854166] [2024-06-27 22:56:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:09,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:12,644 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 22:56:12,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:12,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46854166] [2024-06-27 22:56:12,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46854166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:12,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430477384] [2024-06-27 22:56:12,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:12,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:12,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:12,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:56:12,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 427 transitions, 7024 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:12,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:12,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:56:12,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:16,098 INFO L124 PetriNetUnfolderBase]: 7514/11604 cut-off events. [2024-06-27 22:56:16,099 INFO L125 PetriNetUnfolderBase]: For 295799/295799 co-relation queries the response was YES. [2024-06-27 22:56:16,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87073 conditions, 11604 events. 7514/11604 cut-off events. For 295799/295799 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 73655 event pairs, 2133 based on Foata normal form. 3/11373 useless extension candidates. Maximal degree in co-relation 86979. Up to 10210 conditions per place. [2024-06-27 22:56:16,251 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 386 selfloop transitions, 146 changer transitions 2/542 dead transitions. [2024-06-27 22:56:16,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 542 transitions, 9349 flow [2024-06-27 22:56:16,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:56:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:56:16,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 22:56:16,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:56:16,252 INFO L175 Difference]: Start difference. First operand has 212 places, 427 transitions, 7024 flow. Second operand 10 states and 255 transitions. [2024-06-27 22:56:16,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 542 transitions, 9349 flow [2024-06-27 22:56:17,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 542 transitions, 9102 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 22:56:17,124 INFO L231 Difference]: Finished difference. Result has 221 places, 475 transitions, 8236 flow [2024-06-27 22:56:17,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6797, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8236, PETRI_PLACES=221, PETRI_TRANSITIONS=475} [2024-06-27 22:56:17,124 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 22:56:17,124 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 475 transitions, 8236 flow [2024-06-27 22:56:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:17,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:17,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:17,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:56:17,125 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:17,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1936738800, now seen corresponding path program 7 times [2024-06-27 22:56:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:17,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518418978] [2024-06-27 22:56:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:17,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:20,427 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 22:56:20,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:20,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518418978] [2024-06-27 22:56:20,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518418978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:20,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:20,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:20,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681362119] [2024-06-27 22:56:20,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:20,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:20,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:20,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:20,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:56:20,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 475 transitions, 8236 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:20,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:20,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:56:20,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:24,019 INFO L124 PetriNetUnfolderBase]: 7606/11729 cut-off events. [2024-06-27 22:56:24,019 INFO L125 PetriNetUnfolderBase]: For 316959/316959 co-relation queries the response was YES. [2024-06-27 22:56:24,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90322 conditions, 11729 events. 7606/11729 cut-off events. For 316959/316959 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 74509 event pairs, 2183 based on Foata normal form. 3/11495 useless extension candidates. Maximal degree in co-relation 90223. Up to 10268 conditions per place. [2024-06-27 22:56:24,162 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 375 selfloop transitions, 159 changer transitions 1/543 dead transitions. [2024-06-27 22:56:24,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 543 transitions, 9732 flow [2024-06-27 22:56:24,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:56:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:56:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 22:56:24,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 22:56:24,163 INFO L175 Difference]: Start difference. First operand has 221 places, 475 transitions, 8236 flow. Second operand 9 states and 233 transitions. [2024-06-27 22:56:24,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 543 transitions, 9732 flow [2024-06-27 22:56:25,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 543 transitions, 9419 flow, removed 107 selfloop flow, removed 4 redundant places. [2024-06-27 22:56:25,080 INFO L231 Difference]: Finished difference. Result has 226 places, 483 transitions, 8419 flow [2024-06-27 22:56:25,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7923, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8419, PETRI_PLACES=226, PETRI_TRANSITIONS=483} [2024-06-27 22:56:25,081 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-27 22:56:25,081 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 483 transitions, 8419 flow [2024-06-27 22:56:25,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:25,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:25,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:25,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:56:25,082 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:25,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:25,082 INFO L85 PathProgramCache]: Analyzing trace with hash -228091762, now seen corresponding path program 8 times [2024-06-27 22:56:25,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:25,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801071989] [2024-06-27 22:56:25,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:25,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:28,328 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 22:56:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:28,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801071989] [2024-06-27 22:56:28,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801071989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:28,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:28,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461281002] [2024-06-27 22:56:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:28,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:28,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:28,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:56:28,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 483 transitions, 8419 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:28,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:28,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:56:28,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:32,138 INFO L124 PetriNetUnfolderBase]: 8066/12505 cut-off events. [2024-06-27 22:56:32,138 INFO L125 PetriNetUnfolderBase]: For 349926/349926 co-relation queries the response was YES. [2024-06-27 22:56:32,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98064 conditions, 12505 events. 8066/12505 cut-off events. For 349926/349926 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 80515 event pairs, 2074 based on Foata normal form. 3/12229 useless extension candidates. Maximal degree in co-relation 97963. Up to 10246 conditions per place. [2024-06-27 22:56:32,294 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 372 selfloop transitions, 228 changer transitions 3/611 dead transitions. [2024-06-27 22:56:32,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 611 transitions, 11219 flow [2024-06-27 22:56:32,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:56:32,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:56:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2024-06-27 22:56:32,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5810185185185185 [2024-06-27 22:56:32,295 INFO L175 Difference]: Start difference. First operand has 226 places, 483 transitions, 8419 flow. Second operand 9 states and 251 transitions. [2024-06-27 22:56:32,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 611 transitions, 11219 flow [2024-06-27 22:56:33,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 611 transitions, 10827 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 22:56:33,414 INFO L231 Difference]: Finished difference. Result has 230 places, 527 transitions, 9639 flow [2024-06-27 22:56:33,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8027, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9639, PETRI_PLACES=230, PETRI_TRANSITIONS=527} [2024-06-27 22:56:33,415 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-06-27 22:56:33,415 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 527 transitions, 9639 flow [2024-06-27 22:56:33,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:33,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:33,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:56:33,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:56:33,416 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:33,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash 75757040, now seen corresponding path program 9 times [2024-06-27 22:56:33,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989923981] [2024-06-27 22:56:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:33,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:36,054 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 22:56:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:36,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989923981] [2024-06-27 22:56:36,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989923981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:36,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:36,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:36,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245627467] [2024-06-27 22:56:36,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:36,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:36,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:36,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:36,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:56:36,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 527 transitions, 9639 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:36,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:36,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:56:36,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:39,904 INFO L124 PetriNetUnfolderBase]: 8469/13024 cut-off events. [2024-06-27 22:56:39,904 INFO L125 PetriNetUnfolderBase]: For 387366/387366 co-relation queries the response was YES. [2024-06-27 22:56:39,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107092 conditions, 13024 events. 8469/13024 cut-off events. For 387366/387366 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 83711 event pairs, 2199 based on Foata normal form. 3/12762 useless extension candidates. Maximal degree in co-relation 106988. Up to 11389 conditions per place. [2024-06-27 22:56:40,059 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 464 selfloop transitions, 208 changer transitions 2/682 dead transitions. [2024-06-27 22:56:40,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 682 transitions, 13197 flow [2024-06-27 22:56:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:56:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:56:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 272 transitions. [2024-06-27 22:56:40,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-27 22:56:40,061 INFO L175 Difference]: Start difference. First operand has 230 places, 527 transitions, 9639 flow. Second operand 11 states and 272 transitions. [2024-06-27 22:56:40,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 682 transitions, 13197 flow [2024-06-27 22:56:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 682 transitions, 13049 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-27 22:56:41,470 INFO L231 Difference]: Finished difference. Result has 243 places, 612 transitions, 12158 flow [2024-06-27 22:56:41,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9517, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12158, PETRI_PLACES=243, PETRI_TRANSITIONS=612} [2024-06-27 22:56:41,471 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-27 22:56:41,471 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 612 transitions, 12158 flow [2024-06-27 22:56:41,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:41,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:41,471 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 22:56:41,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:56:41,472 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:41,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:41,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1043866746, now seen corresponding path program 1 times [2024-06-27 22:56:41,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:41,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176873441] [2024-06-27 22:56:41,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:41,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:44,296 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 22:56:44,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:44,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176873441] [2024-06-27 22:56:44,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176873441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:44,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:44,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:44,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982879215] [2024-06-27 22:56:44,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:44,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:44,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:44,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:44,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:56:44,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 612 transitions, 12158 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:44,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:44,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:56:44,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:48,891 INFO L124 PetriNetUnfolderBase]: 8601/13193 cut-off events. [2024-06-27 22:56:48,891 INFO L125 PetriNetUnfolderBase]: For 416802/416802 co-relation queries the response was YES. [2024-06-27 22:56:48,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111252 conditions, 13193 events. 8601/13193 cut-off events. For 416802/416802 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 84603 event pairs, 2113 based on Foata normal form. 6/12932 useless extension candidates. Maximal degree in co-relation 111142. Up to 11755 conditions per place. [2024-06-27 22:56:49,035 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 557 selfloop transitions, 119 changer transitions 0/684 dead transitions. [2024-06-27 22:56:49,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 684 transitions, 13971 flow [2024-06-27 22:56:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:56:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:56:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 277 transitions. [2024-06-27 22:56:49,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809027777777778 [2024-06-27 22:56:49,038 INFO L175 Difference]: Start difference. First operand has 243 places, 612 transitions, 12158 flow. Second operand 12 states and 277 transitions. [2024-06-27 22:56:49,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 684 transitions, 13971 flow [2024-06-27 22:56:50,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 684 transitions, 13596 flow, removed 182 selfloop flow, removed 2 redundant places. [2024-06-27 22:56:50,381 INFO L231 Difference]: Finished difference. Result has 254 places, 620 transitions, 12260 flow [2024-06-27 22:56:50,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11783, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12260, PETRI_PLACES=254, PETRI_TRANSITIONS=620} [2024-06-27 22:56:50,382 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 22:56:50,382 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 620 transitions, 12260 flow [2024-06-27 22:56:50,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:50,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:56:50,383 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 22:56:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:56:50,383 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:56:50,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:56:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1165113820, now seen corresponding path program 2 times [2024-06-27 22:56:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:56:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477478566] [2024-06-27 22:56:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:56:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:56:50,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:56:53,781 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 22:56:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:56:53,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477478566] [2024-06-27 22:56:53,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477478566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:56:53,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:56:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:56:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238444007] [2024-06-27 22:56:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:56:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:56:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:56:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:56:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:56:53,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:56:53,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 620 transitions, 12260 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:56:53,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:56:53,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:56:53,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:56:58,557 INFO L124 PetriNetUnfolderBase]: 8666/13288 cut-off events. [2024-06-27 22:56:58,557 INFO L125 PetriNetUnfolderBase]: For 431812/431812 co-relation queries the response was YES. [2024-06-27 22:56:58,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112772 conditions, 13288 events. 8666/13288 cut-off events. For 431812/431812 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 85089 event pairs, 2137 based on Foata normal form. 6/13027 useless extension candidates. Maximal degree in co-relation 112659. Up to 11845 conditions per place. [2024-06-27 22:56:58,698 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 533 selfloop transitions, 144 changer transitions 0/685 dead transitions. [2024-06-27 22:56:58,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 685 transitions, 13993 flow [2024-06-27 22:56:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:56:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:56:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2024-06-27 22:56:59,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774305555555556 [2024-06-27 22:56:59,013 INFO L175 Difference]: Start difference. First operand has 254 places, 620 transitions, 12260 flow. Second operand 12 states and 275 transitions. [2024-06-27 22:56:59,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 685 transitions, 13993 flow [2024-06-27 22:57:00,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 685 transitions, 13727 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-27 22:57:00,373 INFO L231 Difference]: Finished difference. Result has 260 places, 624 transitions, 12435 flow [2024-06-27 22:57:00,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11994, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12435, PETRI_PLACES=260, PETRI_TRANSITIONS=624} [2024-06-27 22:57:00,373 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-27 22:57:00,374 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 624 transitions, 12435 flow [2024-06-27 22:57:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:00,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:00,374 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 22:57:00,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:57:00,374 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:57:00,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash -731450362, now seen corresponding path program 3 times [2024-06-27 22:57:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295972832] [2024-06-27 22:57:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:04,290 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 22:57:04,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:04,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295972832] [2024-06-27 22:57:04,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295972832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:04,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:04,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:57:04,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854014673] [2024-06-27 22:57:04,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:04,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:57:04,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:57:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:57:04,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:57:04,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 624 transitions, 12435 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:04,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:04,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:57:04,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:08,972 INFO L124 PetriNetUnfolderBase]: 8731/13367 cut-off events. [2024-06-27 22:57:08,972 INFO L125 PetriNetUnfolderBase]: For 455410/455410 co-relation queries the response was YES. [2024-06-27 22:57:09,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114525 conditions, 13367 events. 8731/13367 cut-off events. For 455410/455410 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 85549 event pairs, 2151 based on Foata normal form. 6/13110 useless extension candidates. Maximal degree in co-relation 114410. Up to 11856 conditions per place. [2024-06-27 22:57:09,116 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 517 selfloop transitions, 151 changer transitions 0/676 dead transitions. [2024-06-27 22:57:09,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 676 transitions, 14174 flow [2024-06-27 22:57:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:57:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:57:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-27 22:57:09,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-27 22:57:09,117 INFO L175 Difference]: Start difference. First operand has 260 places, 624 transitions, 12435 flow. Second operand 8 states and 206 transitions. [2024-06-27 22:57:09,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 676 transitions, 14174 flow [2024-06-27 22:57:10,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 676 transitions, 13775 flow, removed 61 selfloop flow, removed 10 redundant places. [2024-06-27 22:57:10,659 INFO L231 Difference]: Finished difference. Result has 258 places, 628 transitions, 12494 flow [2024-06-27 22:57:10,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12036, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12494, PETRI_PLACES=258, PETRI_TRANSITIONS=628} [2024-06-27 22:57:10,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-27 22:57:10,659 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 628 transitions, 12494 flow [2024-06-27 22:57:10,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:57:10,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:10,660 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 22:57:10,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:57:10,660 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:57:10,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash -731444410, now seen corresponding path program 1 times [2024-06-27 22:57:10,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:10,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898331851] [2024-06-27 22:57:10,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:10,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:57:14,737 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 22:57:14,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:57:14,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898331851] [2024-06-27 22:57:14,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898331851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:57:14,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:57:14,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:57:14,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777575006] [2024-06-27 22:57:14,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:57:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:57:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:57:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:57:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:57:14,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-27 22:57:14,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 628 transitions, 12494 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 22:57:14,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:57:14,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-27 22:57:14,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:57:19,625 INFO L124 PetriNetUnfolderBase]: 9089/13909 cut-off events. [2024-06-27 22:57:19,625 INFO L125 PetriNetUnfolderBase]: For 523054/523054 co-relation queries the response was YES. [2024-06-27 22:57:19,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120817 conditions, 13909 events. 9089/13909 cut-off events. For 523054/523054 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 89493 event pairs, 2209 based on Foata normal form. 24/13670 useless extension candidates. Maximal degree in co-relation 120701. Up to 11921 conditions per place. [2024-06-27 22:57:19,982 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 530 selfloop transitions, 157 changer transitions 2/697 dead transitions. [2024-06-27 22:57:19,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 697 transitions, 14379 flow [2024-06-27 22:57:19,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:57:19,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:57:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-27 22:57:19,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-27 22:57:19,984 INFO L175 Difference]: Start difference. First operand has 258 places, 628 transitions, 12494 flow. Second operand 10 states and 249 transitions. [2024-06-27 22:57:19,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 697 transitions, 14379 flow [2024-06-27 22:57:21,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 697 transitions, 14014 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-27 22:57:21,428 INFO L231 Difference]: Finished difference. Result has 263 places, 630 transitions, 12547 flow [2024-06-27 22:57:21,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12129, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12547, PETRI_PLACES=263, PETRI_TRANSITIONS=630} [2024-06-27 22:57:21,428 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-27 22:57:21,429 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 630 transitions, 12547 flow [2024-06-27 22:57:21,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 22:57:21,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:57:21,429 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 22:57:21,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:57:21,429 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:57:21,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:57:21,430 INFO L85 PathProgramCache]: Analyzing trace with hash -724092760, now seen corresponding path program 2 times [2024-06-27 22:57:21,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:57:21,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782532910] [2024-06-27 22:57:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:57:21,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:57:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat